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SLR2011-00002 SLR2O11 00002 FORMER COE MANUFACTURING SITE EXHIBIT) NOTICE OF TYPE I DECISION II FORMER COE MANUFACTURING SITE : s_F SENSITIVE LANDS REVIEW (SLR) 2011-00002 120 DAYS = 2/10/2012 SECTION I. APPLICATION SUMMARY FILE NAME: FORMER COE MANUFACTURING SITE CASE NO.: Sensitive Lands Review(SLR) SLR2011-00002 PROPOSAL: The applicant is requesting Sensitive Lands Review approval for the proposed excavation of approximately 51 cubic yards of contaminated Red Rock Creek sediment and approximately 72 cubic yards of contaminated upland soil within the 100-year floodplain. The proposed soil removal activities are described in detail within AMEC's Removal Action Work Plan, dated October 10, 2011, which was submitted as an attachment to the RealNet's Sensitive Lands Review Application. Because the remediation work has been approved by the Oregon Department of Environmental Quality (DEQ), the statutory "exempt review" process applies to the removal activities per ORS 465.315. The application is for Phase II (upland and in-stream remediation) of a two-phase remediation. Phase I was permitted in April 2011 under SLR2011-00001 for remediation within the floodplain. APPLICANT: RealNet Investments,LLC APPLICANT'S AMEC Earth& Attn: Arthur Johnstone REP Environmental, Inc. 9570 SW Barbur Blvd. Suite 311 Attn:Joel Eledge Portland, OR 97219 7376 SW Durham Road Portland, OR 97224 OWNER: Gould Family Properties VI,LLC 527 Atando Avenue, Charlotte, NC 28206 COMPREHENSIVE PLAN/ZONE DESIGNATION: I-L: Light Industrial District. The I-L zoning district provides appropriate locations for general industrial uses including industrial service, manufacturing and production, research and development, warehousing and freight movement, and wholesale sales activities with few,if any,nuisance characteristics such as noise,glare, odor, and vibration. LOCATION: 7930 SW Hunziker Street; Washington County Tax Map 2S101CA, Tax Lots 00400 and 00700. The property is located south of SW Hunziker Street and includes a segment of Red Rock Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapters 18.390, 18.530 and 18.775. SECTION II. DECISION Notice is hereby given that the Community Development Director's designee has APPROVED the above request. The findings and conclusions on which the decision is based are noted in Section VI of this Decision. SI.R2011-00002 FORMER COE MANUFACTURING SITE SENSITIVE LANDS REVIEW PAGE 1 OF 7 CONDITIONS OF APPROVAL 1. Prior to site work, the applicant shall submit to the city the applicable U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands permits. 2. Prior to site work, the applicant shall obtain an Erosion Control Permit from the city (contact Mark VanDomelen at 503-718-2448). SECTION III. BACKGROUND INFORMATION Site History: The 1983 Tigard Comprehensive Plan and Zoning Map shows the subject property zoned I-L (Light Industrial), which it remains today. In 2006, ML 2004-00008 created two lots including the northern parcel which is the subject parcel, and the southern parcel which contains POTSO Dog Park, now owned by the City. In addition,Tracts A and B were included in the partition which correlated to the unbuildable portions of the two new parcels associated with sensitive lands of Red Rock Creek on the west. The Coe Manufacturing Company has operated until recently on the subject site. The Gould Family Properties VI, LLC is the current owner of the northern parcel (TL00400) and both Tracts A and B. The subject application involves remediation on Tax Lot 00400 and Tract B. Background: The Oregon Department of Environmental Quality (DEQ) requires remediation of certain environmental conditions on a portion of the subject property located at 7930 SW Hunziker Road, Tigard, Oregon and more particularly identified as tax lot 2S10ICA-400. The proposed remediation, as described in the Work Plan included in the applicant's materials includes remediation in the floodplain and in Red Rock Creek and is scheduled to be completed by November 30, 2011. This is Phase II of a two-phase remediation action. Phase I was permitted in April 2011 under SLR2011-00001. Because the Remediation and the Work Plan were approved by DEQ, the statutory "exempt review" process applies to the onsite remedial activities. ORS 65.315. The Remediation must be consistent with local substantive requirements, so the applicant and DEQ have asked the City to issue a site Letter of Determination ("Letter of Determination") before the Remediation commences. The Letter of Determination is issued by the Community Development Department ("CD") to confirm that the Remediation meets City's substantive requirements. A portion of the Property is located in the 100-year floodplain and contains Red Rock Creek along its northern boundary. The proposed Remediation involves ground disturbance and/or land form alteration in the floodplain involving more than 50 cubic yard of material, which triggers a Type IIIA Sensitive Lands Review under Tigard Development Code ("TDC") section 18.775.020(G)( 2)(b). In accordance with the statutory exempt review process,a City land use review process is not being undertaken,but the City must review the proposed floodplain Remediation for compliance with the Sensitive Lands Review criteria at TDC 18.775.070(B)(1)-(7) and TDC 18.775.070(D)(1)-(7). Proposal: The applicant is requesting Sensitive Lands Review approval for the proposed excavation of approximately 51 cubic yards of contaminated Red Rock Creek sediment and approximately 72 cubic yards of contaminated upland soil within the 100-year floodplain. The proposed soil removal activities are described in detail within AMEC's Removal Action Work Plan, dated October 10, 2011, which was submitted as an attachment to the RealNet's Sensitive Lands Review Application. SECTION IV. NEIGHBORHOOD/INTERESTED PARTIES COMMENTS The Tigard Community Development Code requires Type III reviews to notice property owners within 500 feet of the subject site and other interested parties, and be given an opportunity for written comments and/or oral testimony prior to a decision being made. However, in accordance with the statutory exempt review process (ORS 465.315), a City land use review process is not being undertaken, but the City must review the proposed floodplain remediation for compliance with the Sensitive Lands Review criteria at TDC 18.775.070(B)(1)-(7) and TDC 18.775.070(D)(1)-(7). Therefore, no neighborhood meeting was held, nor notice sent to property owners within 500 feet or interested parties. SI mot 1-0(x)02 FORMER COE MANUFACTURING SITE SENSITIVE LANDS REVIEW PAGE 2 OF 7 SECTION V. SUMMARY OF APPLICABLE REVIEW CRITERIA 18.390 Decision Making Procedures Impact Study 18.530 (Industrial Zoning Districts) 18.775 (Sensitive Lands Review) SECTION VI. APPLICABLE REVIEW CRITERIA AND FINDINGS Decision Making Procedures (18.390) Type III Procedure. Type III procedures apply to quasi-judicial permits and actions that predominantly contain discretionary approval criteria. Type III actions are decided by the Hearings Office (Type III-HO), the Planning Commission (Type III-PC), or Design Review Board (Type III-C) with appeals to or review by the City Council. The Hearings Officer has the authority to issue a sensitive lands permit in the 100-year floodplain by means of a Type IIIA procedure, as governed by Section 18.390.050, using approval criteria contained in Section 18.775.070. However, pursuant to ORS 465.315, the procedural aspects of this review are exempt, while the substantive standards are addressed below. FINDING: Based on the analysis above, the applicant's submittal is exempt from the applicable Decision Making Procedures in TDC 18.390.030. Industrial Zoning Districts (18.530): Uses: The I-L zoning district provides appropriate locations for general industrial uses including industrial service, manufacturing and production, research and development, warehousing and freight movement, and wholesale sales activities with few, if any, nuisance characteristics such as noise, glare, odor, and vibration. The proposed action is environmental remediation of a contaminated site and is not considered a "use" of the property. Development Standards: All development must comply with: All of the applicable development standards contained in the underlying zoning district, except where the applicant has obtained variances or adjustments in accordance with Chapters 18.370. The proposed environmental remediation does not involve construction of any structures to which the underlying development standards could apply. All other applicable standards and requirements contained in this title. As reviewed below, the proposed remediation is consistent with the applicable standards in the Sensitive Lands Chapter (18.775). FINDING: Based on the analysis above, the applicant's submittal meets the applicable Industrial Zoning District standards. Sensitive Lands (Section 18.775): G. Sensitive lands permits issued by the Hearings Officer. 1. The Hearings Officer shall have the authority to issue a sensitive lands permit in the 100-year floodplain by means of a Type IIIA procedure, as governed by Section 18.390.050, using approval criteria contained in Section 18.775.070. The proposed remediation is located in an upland portion of the subject property and in the vegetated corridor for Red Rock Creek within the 100-year floodplain. As such, a hearing at the Hearings Officer would be indicated. However, pursuant to ORS 465.315, the proposed remediation is exempt from the Type III procedure. Instead, a staff level review of the substantive standards, below, will be done within SLR2011-00002 FORMER COE MANUFACTURING SITE SENSITIVE LANDS REVIEW PAGE 3 OF 7 five business days or receipt of a complete application by agreement in the Memorandum of Understanding. 2. Sensitive lands permits shall be required in the 100-year floodplain when any of the following circumstances apply: a. Ground disturbance(s) or landform alterations in all floodway areas; b. Ground disturbance(s) or landform alterations in floodway fringe locations involving more than 50 cubic yards of material; c. Repair, reconstruction, or improvement of an existing structure or utility, the cost of which equals or exceeds 50% of the market value of the structure prior to the improvement or the damage requiring reconstruction provided no development occurs in the floodway; d. Structures intended for human habitation; and e. Accessory structures which are greater than 528 square feet in size, outside of floodway areas. The applicant is requesting Sensitive Lands Review approval for the proposed excavation of approximately 51 cubic yards of contaminated Red Rock Creek sediment and approximately 72 cubic yards of contaminated upland soil within the 100-year floodplain. The proposed soil removal activities are described in detail within AMEC's Removal Action Work Plan, dated October 10, 2011. Therefore, exceeding the threshold of 50 cubic yards of ground disturbance within a floodway fringe location, a sensitive land permit is required. 18.775.070 Sensitive Land Permits B. Within the 100-year floodplain. The Hearings Officer shall approve, approve with conditions or deny an application request within the 100-year floodplain based upon findings that all of the following criteria have been satisfied: 1. Land form alterations shall preserve or enhance the floodplain storage function and maintenance of the zero-foot rise floodway shall not result in any encroachments, including fill, new construction, substantial improvements and other development unless certified by a registered professional engineer that the encroachment will not result in any increase in flood levels during the base flood discharge; As shown in the applicant's proposed Removal Action Work Plan, dated October 10, 2011, soil removal from the Red Rock Creek streambed will not be replaced. Soil removal from upland areas within the floodplain with clean fill replacement will maintain the existing site elevations and grades and will not result in alterations to the floodplain storage function or encroachments to the floodplain. Therefore, the proposed project meets the criterion and certification by a registered professional engineer is not warranted. 2. Land form alterations or developments within the 100-year floodplain shall be allowed only in areas designated as commercial or industrial on the comprehensive plan land use map, except that alterations or developments associated with community recreation uses, utilities, or public support facilities as defined in Chapter 18.120 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards; The proposed project area is designated as Light Industrial (I-L) on the city's comprehensive land use plan map. Therefore, the proposed project meets the criterion. 3. Where a land form alteration or development is permitted to occur within the floodplain it will not result in any increase in the water surface elevation of the 100-year flood; As shown in the applicant's proposed Removal Action Work Plan, dated October 10, 2011, soil removal from the Red Rock Creek streambed will not be replaced. Soil removal from upland areas within the floodplain with clean fill replacement will maintain the existing site elevations and grades and will not result in alterations to the floodplain storage function or encroachments to the floodplain. Therefore, the proposed project meets this criterion. SLIL2011-00002 FORMER COE MANUFACTURING SITE SENSITIVE LANDS REVIEW PAGE 4 OF 7 4. The land form alteration or development plan includes a pedestrian/bicycle pathway in accordance with the adopted pedestrian/bicycle pathway plan, unless the construction of said pathway is deemed by the Hearings Officer as untimely; The project area is located in a parking and driveway area for a previously developed private commercial/light industrial area property. The project is a remediation action where the development of a pedestrian or bike pathways within the project area is not feasible. The 2035 Transportation System Plan does not include a pedestrian or bicycle pathway in the vicinity of the subject site. Therefore, the criterion is not applicable to the proposed project. 5. Pedestrian/bicycle pathway projects within the floodplain shall include a wildlife habitat assessment that shows the proposed alignment minimizes impacts to significant wildlife habitat while balancing the community's recreation and environmental educational goals; No pedestrian/bicycle pathway is proposed for this project (see number 4, above). This criterion is not applicable to the proposed project. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands, and CWS permits and approvals shall be obtained; and U.S. Army Corps of Engineers, Oregon State Land Board, or Oregon Department of State Lands permits are required for the proposed work because a portion of the work will be performed below the ordinary high water mark of Red Rock Creek. The applicant has applied for these permits and has stated they will be forwarded to the city when available and before site work commences. A condition of approval will ensure these permits are obtained. 7. Where land form alterations and/or development are allowed within and adjacent to the 100- year floodplain, the City shall require the consideration of dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This area shall include portions of a suitable elevation for the construction of a pedestrian/bicycle pathway within the floodplain in accordance with the adopted pedestrian/bicycle pathway plan. The project area is located within Red Rock Creek and in a parking and driveway area for a previously developed private commercial/light industrial area property. The proposed activity is environmental remediation consisting of soil removal and fill to existing grade. The 2035 Transportation System Plan does not include a pedestrian or bicycle pathway in the vicinity of the subject site. Therefore, the criterion is not applicable to the proposed project. FINDING: Based on the analysis above, the applicant's submittal meets the applicable criteria for land form alteration witun the 100-year floodplain. D. Within drainageways. The appropriate approval authority shall approve, approve with conditions or deny an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land form alteration or development will not create site disturbances to an extent greater than that required for the use; As shown in the applicant's DEQ approved Removal Action Work Plan, dated October 10, 2011, soil removal from the Red Rock Creek streambed is restricted to the contaminated areas identified, with sediment controls prescribed to contain any downstream sediment movement. In addition, the Removal Action Work Plan identifies soil removal from upland areas within the floodplain to a depth of up to one foot with clean fill replacement to maintain the existing site elevations and grades. Therefore, the proposed remediation project meets this criterion. 2. The proposed land form alteration or development will not result in erosion, stream sedimentation, ground instability, or other adverse on-site and off-site effects or hazards to life or property; SLR2O11-OOOO2 FORMER COE MANUFACI'URING SITE SENSITIVE LANDS REVIEW l'AGE 5 OF 7 The DEQ approved remediation through the Removal Action Work Plan, dated October 10, 2011, Section 4.0, includes provisions for erosion control, stream sedimentation, and stream bank stability during the removal action. These measures are designed to prevent adverse on-site and off-site effects for the removal action, consistent with this standard. 3. The water flow capacity of the drainageway is not decreased; The DEQ approved remediation project includes a temporary steel sheet pile check dam to control flow during sediment excavation in Red Rock Creek. Bypass piping will be available if flows exceed reservoir capacity. Otherwise, post remediation, the water flow capacity of Red Rock Creek will not be affected, consistent with this standard. 4. Where natural vegetation has been removed due to land form alteration or development, the areas not covered by structures or impervious surfaces will be replanted to prevent erosion in accordance with Chapter 18.745, Landscaping and Screening; Clean Water Services (CWS) issued a service provider letter (Case File No. 11-003943) which stipulates Special Conditions of approval for revegetation and corridor enhancement after temporary encroachment into the vegetated corridor. The DEQ approved Removal Action Work Plan dated October 10, 2011 also contains revegetation specifications in Section 4.5.4. These measures in combination will satisfy the re- vegetation methods section (18.745.060) of the Landscaping and Screening Chapter, consistent with this standard. 5. The drainageway will be replaced by a public facility of adequate size to accommodate maximum flow in accordance with the adopted 1981 Master Drainage Plan; The proposed remediation of the Red Rock Creek drainageway does not include replacement of any public facilities. Therefore, this standard does not apply. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands, and CWS approvals shall be obtained; U.S. Army Corps of Engineers, Oregon State Land Board, or Division of State Lands permits are required for the proposed work because a portion of the work will be performed below the ordinary high water mark of Red Rock Creek. The applicant has applied for these permits and has stated they will be forwarded to the city when available and before site work commences. A condition of approval shall ensure the applicable agency permits are obtained. 7. Where land form alterations and/or development are allowed within and adjacent to the 100- year floodplain, the City shall require the consideration of dedication of sufficient open land area within and adjacent to the floodplain in accordance with the Comprehensive Plan. This area shall include portions of a suitable elevation for the construction of a pedestrian/bicycle pathway within the floodplain in accordance with the adopted pedestrian bicycle pathway plan. The project area is located within Red Rock Creek and in a parking and driveway area for a previously developed private commercial/light industrial area property. The proposed activity is environmental remediation consisting of soil removal and fill to existing grade. The 2035 Transportation System Plan does not include a pedestrian or bicycle pathway in the vicinity of the subject site. Therefore, the criterion is not applicable to the proposed project. FINDING: Based on the analysis above, the applicant's submittal meets the applicable criteria for land form alteration within drainageways. SECTION VII. OTHER STAFF COMMENTS The City Attorney reviewed and approved the Memorandum of Understanding (MOU) to comply with the provisions of ORS 465.315. SLR20 1 1-00002 FORMER COE MANUFACTURING sm.:SI.:NSI I'IVF LANDS REVIEW PAGE.6 OF 7 SECTION VIII. AGENCY COMMENTS Clean Water Services issued a Service Provider Letter No. 11-003943, dated October 4, 2011 for the subject property. The provider letter noted a 3,130 square foot temporary impact to the Red Rock Vegetated Corridor and adjacent upland areas of the site. Conditions of approval require the applicant to obtain an Erosion Control Permit from the city. SECTION IX. PROCEDURE AND APPEAL INFORMATION Because the Remediation and the Work Plan were approved by DEQ, the statutory "exempt review" process applies to the proposed onsite remedial activities. ORS 465.315. The Remediation must be consistent with local substantive requirements, but is exempt from the Type III review process (TDC 18.390.050). Notice: Notice mailed to: X The applicant and owners Owner of record within the required distance Affected government agencies Final Decision: THIS DECISION IS FINAL ON OCTOBER 18, 2011 AND EFFECTIVE ON OCTOBER 19, 2011 uestions: I you have any questions, please call the City of Tigard Planning Division, Tigard City Hall, 13125 SW Hall Boulevard,Tigard, Oregon at(503 718-2434. October 18,2011 PREPARED B- : 'ary Pagenstecher DATE ssociate Planner KMACriet October 18.2011 APPROVED BY: Ron Bunch DATE Community Development Director Attachment: Memorandum of Understanding SI.,R2011-00002 FORMER COE MANUFACTURING SITE SENSITIVE LANDS REVIEW PAGE 7 OF 7 25 1 01 CA 2S 1 01 CA a`"\� 2 ,\ '0 _ _ `\ .. 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PLOT DATE:July 12,2010 \\ 6 r2' F I E FOR ASSESSMENT PURPOSES S ti , ONLY R OTHER USE ON '<, a/ Iaa.tIi �ir....,noteM[ea he. ,Mrf.'C+rMN.MS,we.G4sse anebyAe aoorcpnar,xep o•xe m-at r.,.v.��na�. Y t b 13 74 ^l uae so- 1 I •••1R1KK -. "2S 1 01CA 2S 1TI CA . c Y A �t t _ ` t mil. T » r - * t V , 4 _ 4n -it- ,y .: .� - --- -..._ «,mss__ s acra:r - a'iii - �N _. • 'ti - : as ., .n{•_ -- Figure 4. '?- >.r- 4 . fCr. � - ... „, •- , ter. i Ciyute 3 / t 1 I 2S101CA00700 . (Tract e) Ii om C600 `,, . t •�1I 14617" 11 V F I. t , t V- .. . . ,r . - Former Hazardous __ _ Fi ure 5 • • I } Figure s / tx,• Waste/Petroleum ! P. t . ., I Storage Area .j r• J !` , t m• i ..• _ N 2S101CA00500 Compressor Shed ` 4 Building#1 ` • ' �' CITY OF TIGARD ` _ 1,- offices x 2S101CA00400 Approve(' (Front Parcel) tt, ti •- - Conditionally Approved , For only the work as desc e - .j PERMIT NO. SL - voad) if' See Letter to: F . I 1 I 1 SW-WallLSS Jo . ., - - /o_/B-II ---===r==:W= V- -- - -- y Date: - , ---r.7., --- . .-.. ,.., !-- t•I', - %ft:* . LEGEND: ':' x a s ---- Redrock Creek ',.` - r '; $ C 0 ity of Tigard Local Wetlands Inventory g 4 .�r.` ,...„ Significant Wetland F-1 Site Boundary 0 50 100 150 Taxlot Boundary 4' i.< ' Feet;•• NOTE Taxlots and 2009 aerial imagery from ftp.metro-egion.org-Metro Data Resource Center. CLIENT: - PROJECT: DATE: City of Tigard Wetlands Inventory data obtained from City of Tigard. ", SD REMOVAL ACTION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHKD BY. FORMER COE MANUFACTURING FACILITY-FRONT PARCEL PROJECT NO: JE 7930 SW HUNZIKER ROAD,TIGARD, OREGON 0-61M-11685-4 DATUM: NAD83 TITLE: REV.NO.: AMEC Earth & Environmental PROJECTION. - 11810 North Creek Parkway N amec� OR SP North,Ft. PROJECT SITE OVERVIEW FIGURE NO.: Bothell,WA 98011 SCALE: 1 inch=100 feet FIGURE 2B K:111000111600\11885\1168511DWG\Front Parcel Maps\Tract 8 Removal\Work_PIan\Figure 2-Project Site Overview.mxd MEMORANDUM OF UNDERSTANDING BETWEEN: Dawn New Hunziker LLC; Wells Apartments, LLC; Michael Lehne Hunziker, LLC; Suzanne Lehne Hunziker, LLC; James S.Russell; and Karen M. Russell,Trustees of the Russell Family Living Trust U/A/D December 2. 2009 (together"Seller") AND: CITY OF TIGARD ("City") by and through its Community Development Department ("CD") DATED: , 2011. RECITALS A. Seller sold to Buyer ownership of the real property located at 7930 SW Hunziker Road, Tigard, Oregon and more particularly identified as tax lot 2S 101 CA-400 on the map attached here as Exhibit A(the"Property"). This sale of real property occurred pursuant to the Purchase and Sale Agreement between the Seller and Buyer, dated November 11, 2010, attached hereto as Exhibit B. B. The Oregon Department of Environmental Quality ("DEQ")requires remediation(the"Remediation")of certain environmental conditions on a portion of the Property. The Remediation, as described in the Work Plan attached hereto as Exhibit C and as further described in Seller's October 12, 2011, submittal to CD (see attached Exhibit D, includes remediation in the floodplain that is scheduled to be initiated in 2011). C. Because the Remediation and the Work Plan[Exhibit C] were approved by DEQ,the statutory"exempt review"process applies to onsite remedial activities. ORS 465.315. The Remediation must be consistent with local substantive requirements, so Seller and DEQ have asked the City to issue a site Letter of Determination("Letter of Determination")before the Remediation commences. The Letter of Determination is issued by the Community Development Department("CD")to confirm that the Remediation meets City's substantive requirements. D. A portion of the Property is located in the 100-year floodplain. The proposed Remediation involves ground disturbance and/or land form alteration in the floodplain involving more than 50 cubic yard of material,which triggers a Type IIIA Sensitive Lands Review under Tigard Development Code("TDC") section 18.775.020(G)(2)(b). In accordance with the statutory exempt review process, a City land use review process is not being undertaken, but CD must review the proposed floodplain Remediation for compliance with the Sensitive Lands Review criteria at TDC 18.775.070(B)(1)-(7). E. City and Seller acknowledge that time is of the essence for Seller's Page 1 —MEMORANDUM OF UNDERSTANDING5m4-36794 Coe Removal Action MOU_AMEC DRAFT_10_12_2 commencement and completion of the proposed floodplain Remediation. AGREEMENT NOW THEREFORE, in consideration of the mutual promises of the parties set forth in this Memorandum of Understanding("MOU"), the City and Seller agree as follows: 1. Required City Approvals. City and Seller agree that the only City land use approval needed before Seller can commence the Remediation is the Letter of Determination and Exempt Sensitive Lands Review approval for the Remediation. 2. Seller Obligations. 2.1 If Seller wants to perform additional development of the Property outside the scope of the Remediation, Seller must apply for land use approval(s) and/or building permit(s). Seller agrees to comply with the provisions of the Tigard Municipal Code ("TMC") and TDC that are in effect at the time when each of such application(s) are submitted, including required exactions, if any. All exactions shall comply with all TMC and TDC requirements and other applicable laws, rules and regulations, including without limitation the Oregon and US Constitution, that are in effect at the time exactions are required. 2.2 Seller has submitted narratives dated October 12, 2011, addressing the Exempt Sensitive Lands Review standards (attached as Exhibit D). 3. CD Obligations 3.1 CD shall issue the Letter of Determination within seven (7) working days of when this MOU becomes effective. 3.2 CD shall issue its Exempt Sensitive Lands Review decision within seven(7) working days of when this MOU becomes effective. 4. General Provisions 4.1 This MOU constitutes the complete and final understanding of the parties with respect to the matters set forth above in this MOU. 4.2 Seller and City agree to use commercially reasonable efforts to enter into the definitive documents contemplated by this MOU as soon as is reasonably possible. Each party shall use its commercially reasonable judgment in negotiation the terms of these definitive documents. 4.3 This MOU is effective when signed by all parties. 4.4 This MOU may be terminated only upon the written agreement of all parties. Page 2—MEMORANDUM OF IJNDERSTANDINGSOOJ4-36794 Coe Removal Action MOU_AMEC DRAFT 10_12_2 4.5 Nothing in this MOU creates an obligation for Seller to commence the Remediation. IN WITNESS WHEREOF,the parties have executed this MOU in counterparts and delivered this MOU as of the first set forth above. COMMUNITY DEVELOPMENT DEPARTMENT By: =za ‘6'lf— XA/Ve-P^-1■ Print Name: 1;[ 'v'.4 1 ' 1vv" C-1-- ,jam Its: 1 e VJr Vii P� 2 vii—a - J r— Date: ©G-r �(f1 7.-e2 I Approved as • : ty Attorn- SELLER DAWN NEW HUNZIKER, LLC WELLS APARTMENTS, LLC By: By: Print Name: Print Name: Its: Its: Date: Date: MICHAEL LEHNE HUNZIKER, LLC SUZANNE LEHNE HUNZIKER, LLC By: By: Print Name: Print Name: Its: Its: Date: Date: JAMES S. RUSSELL AND KAREN M. RUSSELL, TRUSTEES OF THE RUSSELL / q FAMILY LIVING TRUST U/A/D DECEMBER 2, 2009 4 e ,t' �I STa2 tJc By: ACnA-LS f64 pa 494./.4e.,4-/J Print Name: Its: Date: Page 3 - MEMORANDUM OF UNDERSTANDINGsoo u-3679.Coe Removal Action MOU_AMEC DRAFT_1 0_1 2_2 V AFFIDAVIT OF MAILING • TIGARD I, Patricia L. Lunsford,being first duly sworn/affirm, on oath depose and say that I am a Planning Assistant for the City of Tigard,Washington County,Oregon and that I served the following: (OKZk Appmpmn•I ox(s)Below( © NOTICE OF DECISION FOR: SLR2011-00002/FORMER COE MANUFACTURING SITE (File No./Name Reference) AMENDED NOTICE City of Tigard Planning Director A copy of the said notice being hereto attached, marked Exhibit "A", and by reference made a part hereof, was mailed to each named person(s) at the address(s) shown on the attached list(s), marked Exhibit "B", and by reference made a part hereof,on October 18,2011 d deposited in the United States Mail on October 18,2011,postage prepaid. dti),a . iro6 (Person that Pr Notice) / STATE OF OREGON County of Washington ss. City of Tigard Subscribed and sworn/affirmed before me on the i day of O(Oot ,2011. f''�•t OFFICIAL SEAL �"A�< SHIRLEY L TREAT O �J \�'�( R J` . ' NARY PUBLIC•OREGON t �1 COMMISSION NO.459846 �) NOTARY PUBL OF OREGON MY COMMISSION EXPIRES JULY 06.2015 () �1-' My Commission Expires: 1/(0/i Real Net Investments,LLC SLR2011-00002. Attn:Arthur Johnstone FORMER COE MANUFACTURING SITE 9570 SW Barbur Blvd. Suite 311 Portland, OR 97219 EXH1B1TL Gould Family Properties VI,LLC 527 Atando Avenue, Charlotte,NC 28206 AMEC Earth& Environmental,Inc. Atm:Joel Eledge 7376 SW Durham Road Portland, OR 97224 PRE-APR IUD BY: III CITY OF TIGARD PLANNING DIVISION I LAND USE PERMIT APPLICATION City of Tigard Permit Center 13125 SW Hall Blvd., Tigard, OR 97223 TIGARD Phone: 503.639.4171 Fax 503.598.1960 File#4 S(„I g_011- co DD 3" I Other Case# Date 110113/1 I By S-W Receipt# I dtt ■ ' Fee 1 / v U Date Complete TYPE OF PERMIT YOU ARE APPLYING FOR ❑Adjustment/Variance (I or II) ❑ Minor Land Partition(II) ❑ Zone Change(III) ❑ Comprehensive Plan Amendment(IV) ❑ Planned Development(III) ❑ Zone Change Annexation(IV) ❑ Conditional Use (III) ®Sensitive Lands Review(I,II or III) ❑ Development Code Amendment(IV) ❑ Historic Overlay(II or III) El Site Development Review(II) s T ❑ Home Occupation(II) ❑Subdivision(II or III) q I LOCATION WHERE PROPOSED ACTIVITY WILL OCCUR(Address if available) U I 1 .:'_U 1 I 7930 SW Hunziker Street C TAX MAPS&TAX LOT NOS. CITY OF TIGiARD 2S101CA, tax lots 400, 700 PLANNI1 (ENGINEERING TOTAL SITE SIZE ZONING CLASSIFICATION 5 .2 acres Light Industrial (I-L) APPLICANT. RealNet Investments, LLC MAILING ADDRESS/CITY/STATE/ZIP 9570 SW Barbur Boulevard, Suite 311, Portland, OR 97219 PHONE NO. FAX NO. (503 ) 459-4732 (503) 210-0401 PRIMARY CONTACT PERSON PHONE NO. Art Johnstone (503) 548-3901 PROPERTY OWNER)DEED HOLDER(Attach list if more than one) Gould Family Properties VI, LLC MAILING ADDRESS/CITY/STATE/ZIP 527 Atando Avenue, Charlotte, NC, 28206 PHONE NO. FAX NO. (800) 951-4140 x 416 (704) 342-0325 *When the owner and the applicant are different people, the applicant must be the purchaser of record or a lessee in possession with written authorization from the owner or an agent of the owner. The owners must sign this application in the space provided on the back of this form or submit a written authorization with this application. PROPOSAL SUMMARY(Please be specific) RealNet proposes to excavate approximately 51 cubic yards (CY) of contaminate( Redrock Creek sediment and approximately 72 CY of contaminated upland soil (maximum excavation depth of 1 foot below ground surface)within the 100 year flood plain as part of an Oregon Department of Environmental Quality-approve( Remedial Action Measure. Please see attached Work Plan. APPLICATIONS WILL NOT BE ACCEPTED WITHOUT ALL OF THE REQUIRED SUBMITTAL ELEMENTS AS DESCRIBED IN THE"BASIC SUBMITTAL REQUIREMENTS"INFORMATION SHEET. is\curpin\masters\land use applications\other land use applications.doc THE APPLICANT SHALL CERTIFY THAT: ♦ If the application is granted, the applicant shall exercise the rights granted in accordance with the terms and subject to all the conditions and limitations of the approval. • All the above statements and the statements in the plot plan, attachments, and exhibits transmitted herewith,are true; and the applicants so acknowledge that any permit issued,based on this application, map be revoked if it is found that any such statements are false. • The applicant has read the entire contents of the application, including the policies and criteria,and understands the requirements for approving or denying the application(s). SIGNATURES OF EACH OWNER OF THE SUBJECT PROPERTY ARE REQUIRED. cjcI p9,04445 U.S L.L.C. C,(�11 ± ts 30, Doll Signature a .cPS:6L y De-3 Avit`i`74•4 Date Owner's Signature Date Owner's Signature Date Owner's Signature Date Owner's Sign Date r RLNGI is b A`l plicant/Agent/R/417, sentative' ignat a Date Applicant/Agent/Representative's Signature Date CITY OF TIGARV RECEIPT 1 13125 SW Hall Blvd.,Tigard OR 97223 503.639.4171 TWARD Receipt Number: 184225 - 10/13/2011 CASE NO. FEE DESCRIPTION REVENUE ACCOUNT NUMBER PAID SLR2011-00002 Application-Type III 100-0000-43116 $2,498.00 SLR2011-00002 Application-Type III-LRP 100-0000-43117 $369.00 Total: $2,867.00 PAYMENT METHOD CHECK# CC AUTH.CODE ACCT ID CASHIER ID RECEIPT DATE RECEIPT AMT Check 1168 STREAT 10/13/2011 $2,867.00 Payor: RealNet Investment Management LLC Total Payments: $2,867.00 Balance Due: $0.00 Page 1 of 1 ame October 14, 2011 Project No. 0-61M-116854 City of Tigard Community Development, Planning Division 13125 SW Hall Blvd. Tigard, Oregon 97223 Attention: Mr. Gary Pagenstecher Subject: Sensitive Land Use Review Criteria Redrock Creek Soil and Sediment Removal Action Former Coe Manufacturing Property - Front Parcel 7930 SW Hunziker Road, Tigard, Oregon Dear Mr. Pagenstecher: On behalf of RealNet Investments, LLC (RealNet), AMEC Earth & Environmental, Inc. (AMEC) has prepared the following narrative addressing the Sensitive Lands Review criteria for the proposed Redrock Creek Soil and Sediment Removal Action (Removal Action) at the above-referenced Former Coe Manufacturing Property (Site). The proposed soil removal activities are described in detail within AMEC's Work Plan, dated October 10, 2011, which was submitted as an attachment to the RealNet's Sensitive Lands Review Application. Because the Work has been approved by the Oregon Department of Environmental Quality (DEQ), the statutory "exempt review" process applies to the Removal Action activities per ORS 465.315. For each of the applicable Sensitive Lands Review criteria -Tigard Development Code 18.775.070 B)(1)-(7) and 18.775.070 D)(1)-(7) - AMEC has provided a brief response regarding whether the criterion is applicable to the proposed Removal Action, and if so, how the standard will be met. The full text of each of the Tigard Development Code criteria is provided for reference below in italics. AMEC Earth&Environmental,Inc. 7376 SW Durham Road Portland,Oregon USA 97224 Tel+1 (503)639-3400 Fax+1 (503)620-7892 www.amec.com K:\110001116001116851116854 Front Parcel\Tract 6\Permits\City Of Tigard\MOU\Exh D SLR Crit\Tigard Removal Action SLR Criteria_10_13_2011 Doc amec Sensitive Land Permits 18.775.070 B. Within the 100-year floodplain. The Hearings Officer shall approve, approve with conditions or deny an application request within the 100-year floodplain based upon findings that all of the following criteria have been satisfied: 1. Land form alterations shall preserve or enhance the floodplain storage function and maintenance of the zero-foot rise floodway shall not result in any encroachments, including fill, new construction, substantial improvements and other development unless certified by a registered professional engineer that the encroachment will not result in any increase in flood levels during the base flood discharge; AMEC Conclusion: The proposed removal activities within the 100-year floodplain include: (1) removal of sediment below the ordinary high water mark within Redrock Creek and (2) removal and replacement of soil in areas adjacent to Redrock Creek that are above the ordinary high water mark. For the proposed sediment removal areas below the ordinary high water mark, creek sediment will be removed to a total depth of 6 inches below the existing sediment/water interface. Fill will not be re- placed in the excavations located below the ordinary high water mark. Thus, the proposed sediment removal activities would not result in any encroachments to the floodplain and would result in a net enhancement to the floodplain storage function. The proposed soil removal excavations above the ordinary high water mark will include replacement with clean fill and will maintain the existing site elevations and grades. Thus, the proposed removal and backfill activities conducted above the ordinary high water mark will not result in alterations to the floodplain storage function or encroachments to the floodplain. For the reasons discussed above, the proposed project meets the criterion and certification by a registered professional engineer is not warranted. 2. Land form alterations or developments within the 100-year floodplain shall be allowed only in areas designated as commercial or industrial on the comprehensive plan land use map, except that alterations or developments associated with community recreation uses, utilities, or public support facilities as defined in Chapter 18.120 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards; AMEC Conclusion: The proposed project area is designated as Light Industrial (I-L) on the City's comprehensive land use plan map. Therefore, the proposed project meets the criterion. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 2 K:\11000\116001116851116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh 0 SLR Crit\Tigard Removal Action SLR Criteria_10_13_2011.Doc amec 3. Where a land form alteration or development is permitted to occur within the floodplain it will not result in any increase in the water surface elevation of the 100-year flood; AMEC Conclusion: As discussed for criterion B.1., above, the proposed removal activities result in a net enhancement of the floodplain storage function below the ordinary high water mark in Redrock Creek. The proposed soil removal and replacement activities above the ordinary high water mark will maintain the existing site elevations and grades. As such, the proposed activities will not result in any increase in the water surface elevation of the 100-year floodplain. Therefore, the proposed project meets the criterion. 4. The land form alteration or development plan includes a pedestrian/bicycle pathway in accordance with the adopted pedestrian/bicycle pathway plan, unless the construction of said pathway is deemed by the Hearings Officer as untimely; AMEC Conclusion: The project area is located in a previously developed private commercial/light industrial property. As such, development of a pedestrian or bike pathways within the project area is not feasible. Therefore, the criterion is not applicable to the proposed project. 5. Pedestrian/bicycle pathway projects within the floodplain shall include a wildlife habitat assessment that shows the proposed alignment minimizes impacts to significant wildlife habitat while balancing the community's recreation and environmental educational goals; AMEC Conclusion: No pedestrian/bicycle pathway is proposed for this project (see condition 4, above). This criterion is not applicable to the proposed project. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands, and CWS permits and approvals shall be obtained; and AMEC Conclusion: AMEC is in the process of obtaining the necessary U.S. Army Corps of Engineers, State of Oregon Land Board, and Division of State Lands permits. Clean Water Services (CWS) provided approval for the proposed work in the attached Service Provider Letter, dated October 4, 2011. Prior to beginning the project work, AMEC will provide the City of Tigard with copies of all agency permits and approvals, if requested. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the consideration of dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This area shall include portions of a suitable elevation for the construction of a pedestrian/bicycle pathway within the floodplain in accordance with the adopted pedestrian/bicycle pathway plan. AMEC Conclusion: The project area is located in a previously developed private commercial/light industrial area property. In addition, a portion of the project area is located within Redrock Creek. As AMEC Earth & Environmental, Inc. Project No:061M116854 3 K.\11000\11600\11685\116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh D SLR Crit\Tigard Removal Action SLR Criteria_10_13_2011.Doc ame such, the dedication of open space and the development of a pedestrian or bike pathways within the project area is not feasible. This criterion is not applicable to the proposed action. 18.775.070 D. Within drainageways. The appropriate approval authority shall approve, approve with conditions or deny an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land form alteration or development will not create site disturbances to an extent greater than that required for the use; AMEC Conclusion: The purpose of the project is to remove contaminated soil and sediment from limited areas where previous environmental investigations identified potential risk to human health and/or the environment. The proposed project will only create disturbances to the extent necessary to complete the removal action. The removal activities outlined in AMEC's Work Plan have been planned and designed to minimize disturbance to the project area to the greatest extent practical. 2. The proposed land form alteration or development will not result in erosion, stream sedimentation, ground instability, or other adverse on-site and off-site effects or hazards to life or property; AMEC Conclusion: The proposed activities outlined in AMEC's Work Plan include engineering controls and best management practices (BMPs) and to control erosion, prevent down-stream sediment mobilization, and maintain bank stability. The following erosion and sediment control BMPs will be used, as necessary, at the project site: • Straw wattles along the top of the stream bank in areas where any vegetation is removed near the creek, leaving exposed soil; • Sediment staging area management; • Mitigation of wind-blown dust during soil excavation; • Jute matting and hydroseed, across areas where vegetation was removed along the stream bank, following construction activities; and During the construction activities, stormwater runoff from the project site will be directed to vegetated areas up-gradient of the stream, where the storm water will infiltrate. • Jute matting will be placed along the stream bank and restored berm areas during the restoration phase of the work, to reduce the potential for erosion in the restored areas until vegetation is established. The BMPs will be routinely inspected during the sediment removal activities. The results of the BMP inspections will be documented on the DFR Form (Appendix B). AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 4 K:\11000\11600\11685\116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh 0 SLR Crit\Tigard Removal Action SLR Criteria_10_13_2011.Doc amec The following aquatic habitat and water quality protection measures will be implemented prior to beginning the removal action; • A temporary steel sheet pile check dam will be installed in Redrock Creek on the up-gradient boundary of the sediment removal areas. Sand bags may be placed along the check dam to provide additional flow control at the check dam. The check dam will minimize the amount of water flowing into the work area by creating a temporary surface water reservoir up-gradient of the check dam. Once the temporary surface water reservoir reaches its maximum storage capacity (below the top of the check dam), the surface water will be diverted by pumping water from the up-gradient reservoir and discharging through bypass piping to downgradient of the sediment removal area. • Geotextile sediment turbidity curtains will be installed directly up-gradient and directly down- gradient of each of the sediment removal areas. The sediment turbidity curtains will minimize potential sediment mobilization and increases in turbidity downgradient of the work area. Turbidity monitoring will be conducted at up- and down-gradient locations in Redrock Creek during the removal activities to evaluate the effectiveness of the protection measures. Red rock Creek bank slope areas will not be significantly altered by the proposed removal activities and will be maintained at their current grade. The existing slopes are generally not steeper than 2:1 (horizontal to vertical). In areas where it is evident that significant erosion could cause future vegetation and additional soil loss, the bank will be repaired to match the adjacent bank conditions. Jute matting will be placed along the top of the creek to approximately 1-foot below the top of the bank, to ensure that soil erosion does not occur during the period of re-vegetation. Hydroseed will be applied over top of the jute matting. For the reasons discussed above, the proposed project meets the criterion. 3. The water flow capacity of the drainageway is not decreased; AMEC Conclusion: As discussed for criterion B.1, above, the proposed removal activities involve a net removal of sediment below the ordinary high water mark in Redrock Creek, resulting in a net increase in the flow capacity of the creek. The proposed soil removal and replacement activities above the ordinary high water mark will maintain the existing site elevations and grades. As such, the proposed activities will result in a net increase in the flow capacity of the drainageway. Therefore, the proposed project meets the criterion. AMEC Earth & Environmental, Inc. Project No.:061M116854 5 K:\11000\11600\11685\116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh D SLR Cnt\Tigard Removal Action SLR Criteria_10_13_2011.Doc amec 4. Where natural vegetation has been removed due to land form alteration or development, the areas not covered by structures or impervious surfaces will be replanted to prevent erosion in accordance with Chapter 18.745, Landscaping and Screening; AMEC Conclusion: As outlined in AMEC's project Work Plan, areas not covered by structures or impervious surfaces where natural vegetation is removed during project activities will be replanted to prevent erosion in accordance with the re-vegetation standards set forth in 18.745.060. Therefore, the proposed project meets the criterion. 5. The drainageway will be replaced by a public facility of adequate size to accommodate maximum flow in accordance with the adopted 1981 Master Drainage Plan; AMEC Conclusion: As discussed for criterion D.3, above, the proposed removal activities will result in a net increase in the flow capacity of the drainageway. Therefore, the proposed project meets the criterion. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands, and CWS approvals shall be obtained; AMEC Conclusion: As discussed for criterion B.6, above, AMEC is in the process of obtaining the necessary U.S. Army Corps of Engineers, State of Oregon Land Board, and Division of State Lands permits. Clean Water Services (CWS) provided approval for the proposed work in the attached Service Provider Letter, dated October 4, 2011. Prior to beginning the project work, AMEC will provide the City of Tigard with copies of all agency permits and approvals, if requested. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the consideration of dedication of sufficient open land area within and adjacent to the floodplain in accordance with the Comprehensive Plan. This area shall include portions of a suitable elevation for the construction of a pedestrian/bicycle pathway within the floodplain in accordance with the adopted pedestrian bicycle pathway plan. AMEC Conclusion: As discussed for criterion B.7, above, the project area is located in a previously developed private commercial/light industrial area property. In addition, a portion of the project area is located within Redrock Creek. As such, the dedication of open space and the development of a pedestrian or bike pathways within the project area is not feasible. This criterion is not applicable to the proposed action. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 6 K:\11000\11600\11685\116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh D SLR Cnt\Tigard Removal Action SLR Criteria_10_13_2011.Doc ame If you have any questions or require additional information regarding our responses to the Sensitive Land Use Review criteria, please feel free to contact the undersigned at (503) 639-3400. Sincerely, AMEC Earth & Environmental, Inc. 2-807. Z9-e-ere Joel L. Eledge CHMM Charles T. Esler, CHMM Environmental Scientist Principal Attachments: Clean Water Services Service Provider Letter(CWS file 11-003943) JE/CTE/cw c: Arthur F. Johnstone, Sr., Johnstone Properties Charles Harman, Oregon Department of Environmental Quality AMEC Earth & Environmental, Inc. Project No.:061M116854 7 K:\11000\11600\11685\116854 Front Parcel\Tract B\Permits\City Of Tigard\MOU\Exh D SLR Crit\Tigard Removal Action SLR Criteria_10_13_2011.Doc • llll.ctllVYet ` r)1..1VA.A-J Our commitment is clear, CWS File Number Service Provider Letter 11-003943 This form and the attached conditions will serve as your Service Provider Letter in accordance with Clean Water Services Design and Construction Standards (R&O 07-20). Jurisdiction: City of Tigard Review Type: Allowed Use Site Address 7924 SW Hunziker ST SPL Issue Date: October 04,2011 I Location: Tigard,OR 97223 SPL Expiration Date: October 03,2013 Applicant Information: Owner Information: Name ART JOHNSTONE Name WAYNE GOULD GOULD FAMILY PROPERTIES VI LLC Company REALNET INVESTMENTS, LLC Company BY TURRETT STEEL INDUSTRIES INC Address 9570 SW BARBUR BLVD Address 527 ATANDO AVE PORTLAND OR 97219 CHARLOTTE NC 28206 Phone/Fax (503) 459-4732 Phone/Fax (704)342-4321 E-mail: artj@hevanet.com E-mail: wgouldgtturretsteel.com Tax lot ID Development Activity 2S 101 CA00400 25101 CA00700 Soil Remediation Pre-Development Site Conditions: Post Development Site Conditions: Sensitive Area Present: El On-Site ii Off-Site Sensitive Area Present: X On-Site © Off-Site Vegetated Corridor Width: variable;0-50 Vegetated Corridor Width: variable;0-50 Vegetated Corridor Condition: Degraded Enhancement of Remaining Vegetated Corridor Required: ❑ Square Footage to be enhanced: Encroachments into Pre-Development Vegetated Corridor: Type and location of Encroachment: Square Footage: Soil remediation(temporary encroachment mitigated in place) 3,130 Mitigation Requirements: Type/Location Sq.Ft./Ratio/Cost Mitigated on-site 3,130 5i1 i Conditions Attached i1 Development Figures Attached(5)Fl Planting Plan Attached U Geotech Report Required This Service Provider Letter does NOT eliminate the need to evaluate and protect water quality sensitive areas if they are subsequently discovered on your property. Page 1of7 MS Fib Number 114"i43 In order to comply with Clean Water Services water quality protection requirements the project must comply with the following conditions: 1. No structures, development, construction activities, gardens, lawns, application of chemicals, uncontained areas of hazardous materials as defined by Oregon Department of Environmental Quality, pet wastes, dumping of materials of any kind, or other activities shall be permitted within the sensitive area or Vegetated Corridor which may negatively impact water quality, except those allowed in R&O 07-20, Chapter 3. 2. Prior to any activity within the sensitive area,the applicant shall gain authorization for the project from the Oregon Department of State Lands(DSL) and US Army Corps of Engineers(USACE). The applicant shall provide Clean Water Services or its designee (appropriate city)with copies of all DSL and USACE project authorization permits. 3. An approved Oregon Department of Forestry Notification is required for one or more trees harvested for sale, trade, or barter, on any non-federal lands within the State of Oregon. 4. Prior to ground disturbance an Erosion Control Permit is required from the City of Tigard. Appropriate Best Management Practices (BMP's)for Erosion Control, in accordance with Clean Water Services' Erosion Prevention and Sediment Control Planning and Design Manual, shall be used prior to, during,and following earth disturbing activities. 5. Activities located within the 100-year floodplain shall comply with R&O 07-20, Section 5.10. 6. Removal of native,woody vegetation shall be limited to the greatest extent practicable. 7. Should final development plans differ significantly from those submitted for review by Clean Water Services,the applicant shall provide updated drawings,and if necessary, obtain a revised Service Provider Letter. SPECIAL CONDITIONS 8. Temporary encroachments in to the Vegetated Corridor shall be enhanced to good corridor condition. Enhancement of these areas shall include scraping away and filling of ruts caused by vehicles, seeding all areas within the Vegetated Corridor with native plant seed, and native tree and/or shrub replacement in the Vegetated Corridor where removal of native vegetation is proposed.All native vegetation within the Vegetated Corridor that is removed as a result of the project shall be replaced at a 1:1 caliper size at Diameter Breast Height for trees and on a 1:1 quantity basis for shrubs. 9. Prior to installation of plant materials, all invasive vegetation within the Vegetated Corridor shall be removed per methods described in Clean Water Services' Integrated Vegetation and Animal Management Guidance, 2003. During removal of invasive vegetation care shall be taken to minimize impacts to existing native tree and shrub species. 10. Clean Water Services shall be notified 72 hours prior to the start and completion of enhancement/restoration activities. Enhancement/restoration activities shall comply with the guidelines provided in Landscape Requirements(R&0 07-20,Appendix A). 11. Maintenance and monitoring requirements shall comply with R&O 07-20, Section 2.11.2. If at any time during the warranty period the landscaping falls below the 80%survival level, the owner shall reinstall all deficient planting at the next appropriate planting opportunity and the two year maintenance period shall begin again from the date of replanting. This Service Provider Letter Is not valid unless CWS-approved site elan is attached, Please, all (603) 60/14639 with any questions. — _ urie Harris Environmental Plan Review Attachments(5) Pape 2 of 7 i j r , ff ft ��. r, . s s ,'`E-32 ``--••,,,- .-+ - r -. a I; .�� FlgtYred t` I 2SWlCA00700 ' �..,,,a,e . `r 01 1` ..'1-. , �x } ! ; i - L��..� .—..wr .seer_ 1 °" 1 Former Hazardous �'--_.�" " " WasteIPetrotetfm---„, Flgu 3 Storage Area � 1 I I ! ! z 2 10rCp00500 Compressor Shed - Building$1 Approved offices Clean Water S; ' es .... 2S/0/CAC0-400 B ' NA Date 0 A 4. LEGEND: - ---- RE'ROCK CREEK ED STTE BoUNDaARY CITY OF T'IGARD LOCAL WETLANDS INVENTORY [ TAXLOT BOOUNDARY 0 50 100 21):: SIGNIFICANT WETLAND . _ I f i t; - PURPOSE:Remodel Ham derse.mns.,nd«r,--he .r.F0 ,vkraight APPLICANT REFERENCE.°otcdeeernmer, PROPOSE :Romeo orgIP+ y445 ba 15 obit radii ofearaYminandssdnrenibaierw vie atninar+y eris6Vneleffileit,parDEQ appalled Ramerlal Add'Mat Ptak Remora+of LOCATION: aapr almateiy 71 taible VW*Of teneWrana&mt sail loam uptarui area abarn onda Wy high wetenwalk. DATUM:rrrA022 755th SAM r+unaAd S.Tigard.Weseer,1 Cw.rdy,t„Tra{em IN:Wrack Cruet NEMIAT:Tuned ADJACENT PROPERTY OWNERS: To be determined. COUNTY:waatesta5dn STATE:OR APPLICATION BY:Mould Fwn:Iy Poems IM,GL= NOTE:Car of Tigard wetlands Ingentonr data attained tnten caw,of Tigard. PROJECT AREA: SHEET:3 of 5 DRAFT 4,,..UAW N 132.4E'332ite W DATE:Soistwentrar e'n-i t • moiicwi.rwp»tiriswwxs s. u+wr�a..nta.a .elWJ*.i: -ors.i .a»...w+.,+a.+.wr...-tia�„- . .�Y'7++ - . LEGEND: APPROXIMATE CATCH BASIN LOCATION -4-4-i• APPROXIMATE LOCATION OF TURBIDITY CURTAIN - 0 APPROXIMATE MANHOLE LOCATION AREA OF UMI ri.)VEGETATION REMOVAL =Nom FOR CREEK ACCESS AMID RESTORATION A APPROXIMATE STORM SEWER OUTFALL LOCATION (see Detail -ê). D- ------- APPROXIMATE STORM SEWER UNE ---- PROPOSED TRANSPORTATION ROUTE ED TRACT B(TaxIet 28101CA-700) lo-wo.o. SHEEIPILE CHECK DAM* ooce STATION DESIGNATION(25ft.Interval) (see Detail C-3) C3 PROPOSED SEDIMENT REMOVAL AREA ...,:`44:,'":4'' 4'T'Cif11°‘1,-'''...,,-'ir"1'71- See***0 DOOTOtteard TurtitRy Colabli ti Section B ,t, 6 44,*-v Section A Downstream Thlbxlity Ctotam I Section A .4 * - "44O 1:: .,— Sari a Ilestregon TIRtalaRif Cultlin li , I 2+CC 1+Ou 4- 1+7-S : , ■ 1.25 04-76 04, 0 1 / 011111111 --—-- ..--7 . , 4 414,44 4 '4,44 i i 4 ________Mradt4 of Stamm Fkof k 1 , ! i t i ceitt45 Ptiii A. k.1-0 t) i, ' I . ... .."114'14-11.1-,;:',41.1, .ft-1'..1.11,161:"T1' `. - — - .,.., ' ved .....,,,....,..-4.„,t/....,:,..,,.' ,. ..,.-=: ...., . ..k.,-74.-'. .. ,,,;,-"Nytost.1...v,--.., ,. . .,_ .. . ,,,-...,,., ,,„..,,,,,i,_Jr2- , 41ean star Services , .,.„ . 4. .c.Nay e"v;yr.41.teo,R,,tat eipo,for' i ;',..! 1.—itiot Hr Date i o 1 4 A - i . I 60 ,14,8, At-tio,....e.,,--t- 2,. •■■ 4 Fart i PURPOSE:Rome/dtal*Aim perfootool under Onotyri Oft ovoloWst APPLICANT REFERENCE:To I*tirAenvilr44 PROPOSED:Remold a appferrieneeky 46 to 7S cltbie teed,of Lortiarninated sediment teem to Grammy MO sosteametk IteeteQ RiSoneedigvglukdiek Arbm,Work Pttot Remo,st at LOCATIOlt awatanstay 71 cubit yards 4 coratemitmft4 seal from Up4and area 444".emlawy WI,teetionottit. DATUM:NAD83 VISO 8W Nundlter 10...netesA WeetAlitten co .OrOPo IN RedroOz Creek NEARYAT.Tigard .-ADJACENT PROPERTY OWNERS: To Oe determined_ 'COUNTY:Washmaion STATE OR APPLICATION BY:Gould Family Proper's:51V,U.S NOTE'Bypass euseperm mope used to!maw senternflow to Wow watt,ersta PROJECT AREA: 'SHEET 3 4 6 DIIAFT Or zvlimilar It UT 4VYADOett DATE Sept/miler 2011 11.01..50.40***411041M,A03.74..fna•Kw".P1 ftrfeweiPlef.01pust 4-.lamed Ifelhoont 1/tmvasiJkossi.S.M1-aptiMblilatigil■P-=01---i.An hi Downtteam Secondary Not Arty Cur,arr LEGEND: A APPROXIMATE STORM SEWER OUTFALL LOCATION -.-;-4- APPROXIMATE LOCATION OF TURBIDITY CURTAIN J Section E LLTtA+tstrcamTurbidity Curtain; it k. Sec Deadi1/4...S1 APPROXIMATE STORM SE1 ER°_:NE AREA OF LIMITED VEGETATION REMOVAL CITY OF TIGARD EJO°s'I FOR CREEK ACCESS AND RESTORATION 4 1 _'-; LOCAL WETLANDS INVENTORY (see Detail-e 3l D �I " SIGNIFICANT WETLAND -- MATTING Section E Section D 7-1 TRACT B(TaxIct 2STU1CA-700) ---- PROPOSED TRANSPORTATION ROUTE � ' ' STATION DESIGNATION(25ft.Interval) 5.00 (see Detail C-3) E-32 �''` C3 PROPOSED SEDIMENT REMOVAL AREA 41110 .. . „.5(; Section R tp:.tm.cm T,,-t;n•y Curtti•• � 4.2 V, 4'00 Section C Downstream 71xtnt;y Corm') r _. i 41 --'---,,,,.._....:3;,5 ;Se,.:,:cn C UffArearli'cro4dtti(,main I See Detatl c� i• -1 t ' �s1 Cross Section A—1 See Dctai l8 ....,.„..., `- ;;.:•e,5 Section C -It II} t„„ i 1 ' a. illifiLt•;/..,A � -..� ....--_-- - -._._ See Deal• G ,.. Approved • Clew Water Services o 15 30 60 -C"Y 1,:.4'1v 1 ti'r1 Lyvt.LL, -Lt eta i,_1-e-'f `v foot By v t-t Date I _ ,-����((� j,� , may, PURPOSE:RamaKJM.ciicrl par4arcmad I�.:.<(kaoen DE©wee-sight APPUCANT REFERENCE To to do10 m�ndd PROPOSED.HerMa►or fapphldmal!!y 15 a�iaebx y of conl3aminateeitallmant brew IN.ardr+ay PIO welalmirtk,par CEO afprorea Remedial Adam W;rk Plan,Rer ii M rf LOCATI ON: apprak∎n1Mely 71 s.4.0 yards 01 coraamnale7 sect from ullard area atone ardrwy hip'motorman* DATUM 11a Din 79W0 S44 I ono, er SE'.Wd•viueatuthn Carer,Oro-Jan LN:Redneck Creek NLA1LAT:Tgerd ADJACENT PROPERTY OWNERS r r re aeten area. COUNTY.viaae nJm STATE:OR APPLICATION BY:c.:,ud Family Pmpertes Jed,LIG NOTE:cty of Nerd«elands invernsfy data ctwmed from Coy at Tigard PROJECT AREA: SHEET:.t a'5 45'2 DRAFT s abeW N mar{r 33.na'sy DATE sepMwbm 2011 'au ISO.Ie».naeumtrwwrn.w a.w w.I.r sa k-...wra.*..r r•..wrr.s rod m.rr�r.....••.mein rsu.w _ $ LEGEND: ------ A APPROXIMATE STORM SEWER OUTFALL LOCATION a 4 APPROXIMATE STORM SEWER LINE I';,] PROPOSED SHALLOW SOIL REMOVAL AREA � TRACT B(Taxbt 2S101CA-700) -���� , ti e ^ ,` . — � — sectional fi , i. I Ai Sedan 2A ft Will G11 > rite (v0. It—Ci31 'L3 Approved Clean Water Services �� ,,, -r1V 44t'ttjwle' A �)�CLIAVtvi By Lv tk Date w(4 A, 5.19 L. ,r---tizj - 4 cc S Sedan,et# �'�i 41;) p 15 :ill CO ....... ....■ Feet. PURPOSE:Rae,aeLY ecticei parboiled u 'O•egm OEO oversight APPUCANT REFERENCE:To bo ds4.n' ! PROPOSED:t'tamcvat ar amrb+mMety 45 to 76 cs.bc voila nt rrbniwmowtad w.amont troy Tn welder%toob walermert.pee CEO appfoved Remedial Aron Welt Floe,Nomad Id d LOCATION: nlorosie+atoy 71 edm.rrrdc.Y come-related soil bum Wand area Dean ordrory rope eolemeui DATUM:NAOe7 7935 SW Htr.:Aar St,Tloan1 Wastongtoc counly,Oregon IN:Rrdock Creak NEAR)AT:Tigard ADJACENT PROPERTY OWNERS: To be delerrrrteel COUNTY:was/drawn STATE:CII APPLICATION BY:Goad randy Properttea IV,LLC PROJECT AREA: SHEET:5 or 5 DRAFT 45.26. 7 AW N trr4513 xw w DATE saptnmto tpaa c..I..,,ns,,.s r,f4r,CMew-.4..*,SMavet S.... a.ru,P..F r.Iw•4 w«Ax..e`.�..sw...w.w./�...4••�a1.fit„ "ay.ev - OVERLAP MAT 6—INCHES IHYDROSEED \\ (IF NEEDED) • W i Y W \ ] is N. N. 1.... . . • W .. _ . y W N.N. . . ...- ;: - • k \ . .. ttt .: • \ • w A•. N J. W r • ,� ywi.=.xY ba ♦ . * i 4P . • * * •.j. ISTAPLE PATTERN - : i (TYP ) � 9] . W 4. W l w A W . W Y ✓ {�$$ T�yh�• Z o • r , .:::1:4:11..€:': . ♦ ♦ iilw.vi.w hKt pQ Y•••t'C":: L�7 1I1, � ,III .I�_. .. . III- INSTALL JUTE MAT ' 11 111=111=111=11 I RO EED HYYD ALONG TOP OF ° I I I I I I i l ', (IF NEEDED) STREAM BANK I■-au -r WHERE NEEDED EXISTING BANK Us t & WHERE NEEDED Approved (MAINTAIN SLOPE) Clean Water Services , , 1 r e u�, � -i. 01A\v`%► v� c � y__ _Date o 1.NOTES: INFORMATION PROVIDED IS MINIMUM REQUIREMENTS. 1 L' � � ��14�{cLL� 7 MANUFACTURES REQUIREMENTS WHICH ARE MORE STRINGENT vt SHALL BE USED. e 2. INSTALL MAT PARALLEL IN CENTER OF CHANNEL IN THE e DIRECTION OF FLOW. 1 3. LENGTH OF STAPLES SHALL BE DETERMINED BY SOIL TYPE — COHESIVE SOIL USE 6 INCH, NON—COHESIVE SOILS 8-12 INCH. i 4. HYDROSEED SHALL CONSIST OF NAME RIPARIAN/STREAMBANK MIX WITH APPLICATION RATE OF 2LBS PER 1,000SF; (FESTUCA m RUBRA (50%); BROMUS CARENATUS (20%); ELYMUS GLAUCUS 1 (20%); LUPNUS POLYPHILLIS (10%)) 411 101,011CM2 . . JUTE MAT DETAL 1 CLIENT AMEC Earth & Environmental a �C� REALNET i W 7376 S. nal+am Rnae INVESTMENTS, LLC P.'t1 n0 OR.GSA,97 224 TTR F. JUTE MAT DETAIL 9V' U' OATS F'!A P4'A SEPTEMBER 2011 $ CT REMOVAL ACTION OHKDEY ASV.743.: wA PR JECT 041M-110354 i FORMER COE MANUFACTURING FACILITY-FRONT PARCEL 7930 f c, FIOURENA SW HUNZIKER ROAD, TIGARD,OREGON NIA NM_ A Y -0 o ,% Yep®j'1 Department of Environmental Quality ', ;;Z 1 1 Nortwest Region Portland Office John A.Kitzhaber,MD,Governor 2020 SW 4th Avenue,Suite 400 Portland,OR 97201-4987 (503)229-5263 Fax: (503)229-6945 TTY: (800) 736-2900 October 12, 2011 RECEIVED PLANNING • Arthur Johnstone OCT 17 2011 Representative for Coe Ownership Group 8029 SW Devon Lane CITY OF TIGARD Portland, OR 97219 Re: Approval - Former Coe Manufacturing Removal Action Work Plan Coe Manufacturing Property — Front Parcel 7930 SW Hunziker Road, Tigard, OR ESCI #983 Dear Mr. Johnstone, Oregon Department of Environmental Quality (DEQ) Cleanup Program staff have reviewed the final document— "Removal Action Work Plan, Former Coe Manufacturing Property - Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon; ECSI # 983," dated October 10, 2011, provided by your consultant AMEC. DEQ's review and analysis have been performed in accordance with an Independent Cleanup Pathway (ICP) agreement dated October 16, 2006, and signed by Scott Fouser of RealNet on November 15, 2006. DEQ approves the Work Plan and you are clear to proceed once you've acquired the permits needed to implement several elements of the Work Plan. In summary. you will remove contaminated soil and sediments in areas within and adjacent to Redrock Creek that borders the facility in order to reduce risk associated with contaminants present in those media. DEQ's approval for the removal action work is granted under authority per Oregon Revised Statutes (ORS) 465.260. The removal action is intended to allow for significant improvement to the sediment and reduce exposures to Redrock Creek biota and fauna that live in and around the creek. Following the removal, the Coe Ownership Group and their consultant will perform a residual risk assessment and, if needed, a focused feasibility study that will define the remaining risk and evaluate options to further reduce risk. If the soil and sediment remedial action objectives outlined in the Work Plan are met through the removal action, and confirmatory samples do not exceed same, it is DEQ's expectation that the risk posed by PCBs and metals in Redrock Creek will have been adequately addressed. Coe Mfg. — Remedial Investigation Work Plan 2 10/12/2011 If you have questions please contact me at (503) 229-6431 or via electronic mail at harman.charles(c�deq.state.or.us. Sincerely, Chuck Harman, Remedial Action Project Manager NWR Cleanup Program cc: Joel L. Eledge, AMEC Danette Faucera, ODF&W Dan Hafley, DEQ NWR Cleanup Mike Poulsen, DEQ NWR Cleanup Gary Pagenstecher, City of Tigard Brian Villalon, USACE, Portland District Amber Wierck, Clean Water Services ECSI File#983 amec RECEIVED REMOVAL ACTION WORK PLAN OCT 1 4 2011 OF TIGARD Former Coe Manufacturing Property- Front Parcel CITE'PLAtVh,IN�i%=PlGI'vEEPIINQ 7930 SW Hunziker Road, Tigard, Oregon ECSI # 983 Prepared for: RealNet Investments, LLC 9570 SW Barbur Boulevard, Suite 311 Portland, Oregon 97219 Prepared by: AMEC Earth & Environmental, Inc. 7376 SW Durham Road Portland. Oregon 97224 (503) 639-3400 October 10, 2011 Project No. 0-61M-116854 Copyright©2011 by AMEC Earth & Environmental, Inc. All rights reserved. amect October 10, 2011 0-61M-116854 Oregon Department of Environmental Quality 2020 SW Fourth Avenue, Suite 400 Portland, Oregon 97201 Attention: Mr. Charles Harman Subject: Removal Action Work Plan Former Coe Manufacturing Property — Front Parcel 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Dear Mr. Harman: On behalf of RealNet Investments, LLC (RealNet), AMEC Earth & Environmental, Inc. (AMEC) has prepared the enclosed Removal Action Work Plan for the above-referenced property (Site). Please contact the undersigned at (503) 639-3400, if you have any questions regarding the Removal Action Work Plan. Sincerely, AMEC Earth & Environmental, Inc. „9"-e(27- Lt4 Joel L. Eledge, CHMM Charles T. Esler, CHMM Environmental Scientist Principal Attachments: Removal Action Work Plan JE/Ip c: Arthur F. Johnstone, Sr., Johnstone Properties AMEC Earth&Environmental, Inc. 7376 SW Durham Road Portland,Oregon USA 97224 Tel+1 (503)639-3400 Fax+1 (503)620-7892 www.amec.com Ki11000\11600\11685\116854 Front ParceRTract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel amec-- 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 TABLE OF CONTENTS Page LIST OF ACRONYMS AND ABBREVIATIONS iv 1.0 INTRODUCTION 1 1.1 Removal Action Scope of Work 1 1.2 Work Plan Organization 1 2.0 PROJECT BACKGROUND 2 2.1 Environmental Setting 3 2.1.1 Topography and Drainage 3 2.1.2 Land Use 3 2.1.3 Soil 3 2.1.4 Geology and Hydrogeology 4 2.1.5 Surface Water Features and Wetlands 4 2.2 Previous Investigations and remedial Actions 4 2.2.1 Site Investigation Summary Report and Baseline Human Health Risk Assessment 4 2.2.2 Level II Ecological Risk Screening 5 2.2.3 Front Parcel Uplands Remedial Investigation Supplement 6 2.2.4 Partial NFA- Front Parcel Building and Paved Parking Areas 7 2.2.5 Front Parcel Uplands Soil Removal TRAM 8 2.2.6 Tract B Remedial Investigation 9 2.3 Conceptual Site Model 10 3.0 REMOVAL ACTION OBJECTIVES 11 3.1 Project Action Limits 11 3.1.1 Remedial Action Levels 11 3.1.2 Waste Characterization Regulatory Limits 12 4.0 REMOVAL ACTION 13 4.1 Phase 1: Project Preparation 14 4.1.1 Project Management 14 4.1.2 Environmental Permitting 17 4.1.3 Aquatic Habitat and Water Protection Measures 18 4.1.4 Utility Locating 19 4.1.5 Site Preparation 20 4.2 Phase 2: Sediment Removal 21 4.2.1 Sediment Excavation 22 4.2.2 Confirmation Sampling 24 4.3 Phase 3: Upland Soil Removal 25 4.3.1 Soil Excavation 25 4.3.2 Soil Confirmation Sampling 26 4.4 Phase 4: Sampling 26 4.4.1 Surface Water Quality Sampling 27 4.4.2 Sediment Confirmation Sampling 29 4.4.3 Soil Confirmation Sampling 30 4.4.4 Material Management 31 AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 TABLE OF CONTENTS (continued) Page 4.4.5 General Sample Handling 33 4.4.6 Field Quality Control Samples 34 4.4.7 Decontamination Procedures 34 4.5 Phase 5: Site Restoration 34 4.5.1 Creek Bank 35 4.5.2 Upland Soil Excavation Areas 35 4.5.3 Removal of Staging Area 35 4.5.4 Re-vegetation 35 4.5.5 Final Site Survey 36 4.6 Phase 6: Material Management 36 4.6.1 Sediment and Soil Management 36 4.6.2 Decontamination Water Management 36 4.6.3 Other Waste Management 37 4.6.4 Material Profiling, Transportation, and Disposal 37 5.0 REPORTING 38 6.0 SCHEDULE 39 REFERENCES 40 LIMITATIONS 43 TABLES Table 3.1.1: Remedial Action Levels 12 Table 3.1.2: Waste Characterization Regulatory Limits 13 Table 4.1.1: Project Team 15 Table 4.2: Surface Water Turbidity Monitoring Locations and Times 22 Table 4.2.1: Estimated Extent of Sediment Excavation 23 Table 4.3: Estimated Extent of Soil Excavation 25 Table 4.4: Sample Requirements 27 Table 4.4.5: Sample Container and Preservation Requirements 33 AMEC Earth & Environmental, Inc. ii Project No.: 0-61M-116854 K:\11000111600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan amee9 Former Coe Manufacturing Property—Front Parcel 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 FIGURES Figure 1 Site Location Map Figure 2 Project Site Overview Figure 3 Proposed Sediment Removal Areas Overview Sections A-B Figure 4 Proposed Sediment Removal Areas Overview Section C-D-E-F Figure 5 Proposed Shallow Soil Removal Areas Figure 6 Removal Action Details Figure 7 Removal Action Notes APPENDICES Appendix A Tract B Remedial Investigation Analytical Results Appendix B Field Forms Appendix C Standard Operating Procedures Appendix D Agency Correspondence and Permit Applications AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan /' Former Coe Manufacturing Property— Front Parcel ame,.. �j 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 LIST OF ACRONYMS AND ABBREVIATIONS AMEC AMEC Earth & Environmental, Inc. Apex Apex Laboratories bgs below ground surface BMP Best Management Practice CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CF cubic foot CFR Code of Federal Regulations COC constituent of concern CY cubic yards dbh diameter at breast height DEQ Oregon Department of Environmental Quality DFR Daily Field Report DOT United States Department of Transportation DSL Oregon Department of State Lands DU Decision Unit EPA United States Environmental Protection Agency ESP Environmental Stewardship Plan ESCP Erosion and Sediment Control Plan ft feet GAC granular activated carbon HAZWOPER Hazardous Waste Operations and Emergency Response Standard HASP Site-Specific Health and Safety Plan IS incremental sampling LDR Land Disposal Restriction mg/kg milligrams per kilogram mg/L milligrams per Liter NCP National Oil and Hazardous Substances Pollution Contingency Plan AMEC Earth & Environmental, Inc. iv Project No.: 0-61M-116854 K:\11000\11600\116851116854 Front Parcel1Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property- Front Parcel aI7'ieC - 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 NPDES National Pollution Discharge Elimination System NTU Nephelometric Turbidity Unit ODFW Oregon Department of Fish and Wildlife OPA Oil Pollution Act ORS Oregon Revised Statute PEC Probable Effects Concentration PPE personal protective equipment QA Quality Assurance QC Quality Control QTt terrace deposits RCRA Resource Conservation and Recovery Act SAP Sampling and Analysis Plan SLV Screening Level Value SU Standard Unit S/W Sediment/Water TBD To Be Determined TCLP Toxicity Characteristic Leaching Procedure pg/L micrograms per liter pg/m3 micrograms per cubic meter U.S. United States USACE U.S. Army Corps of Engineers USDA U.S. Department of Agriculture AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 V K:\11000111600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 REMOVAL ACTION WORK PLAN Former Coe Manufacturing Property — Front Parcel Tigard, Oregon 1.0 INTRODUCTION This Removal Action Work Plan (Work Plan) presents removal action measures for the former Coe Manufacturing — Front Parcel property located at 7930 SW Hunziker Road in Tigard, Oregon in Washington County (Site) (Figure 1). The Work Plan describes the proposed methods to remove Redrock Creek sediments impacted by lead, zinc, and/or polychlorinated biphenyls (PCBs) and upland shallow soils impacted by arsenic, chromium, lead, and PCBs. 1.1 REMOVAL ACTION SCOPE OF WORK The removal action to be performed at the Site consists of the following tasks: 1. Site preparation, including obtaining the necessary permits and approvals from Federal, State, and municipal regulatory agencies; 2. Removal of sediment from six hot spot areas below the ordinary high water mark in Redrock Creek (approximately 2,750 square feet in total area) to an excavation depth of 0.5 feet (Figures 3 and 4, Sediment Removal Areas A through F); 3. Removal of soil from three hotspot areas adjacent to Redrock Creek (approximately 800 square feet in total area) and from two hot spot areas located further upland (approximately 1,200 square feet in total area) (Soil Removal Areas 1 BB and 2A, 3, 4, and 5, Figure 5); 4. Management of the removed sediment, soil, and water; and 5. Site restoration. 1.2 WORK PLAN ORGANIZATION The Work Plan is structured as follows: • Section 1.0: Introduction: Describes the previous range use, the general purpose of the work, and the organization of the work plan. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 1 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amect-9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Section 2.0: Project Background: Presents the regional and local environmental setting of the site and provides Site background information, including a detailed description of the Site and a summary of previous investigations. • Section 3.0: Removal Action Objectives: Presents the Federal, State, and local applicable or relevant and appropriate requirements for the project. • Section 4.0: Removal Action: Describes the details of the project work that will be performed on-Site, including project preparation, sediment removal, and restoration activities and describes ancillary tasks for each of the four phases, including substantive requirements from permitting agencies for or in association with the project. • Section 5.0: Reporting: Presents project deliverables. • Section 6.0: Schedule: Presents project schedule. 2.0 PROJECT BACKGROUND The former Coe Manufacturing property is located in a highly developed, commercial/industrial- zoned area of Tigard, Oregon, south of SW Hunziker Road and west of SW Wall Street. In previous investigations, the property has been conceptually divided into three parcels, which are referred to as the Front, Middle, and Back Parcels. The Front Parcel (the project Site for this Work Plan) is comprised of two tax lots: the 0.53-acre tax lot 2S101 CA00700 (also referred to as "Tract B") and the adjacent 4.67-acre Front Parcel Uplands (tax lot 2S101CA00400). The location of the Site and adjacent features is shown on Figure 1. The layout of the Site and adjacent properties is shown on Figure 2. All directions referenced in this plan are based on Plan North (defined as approximately 22 degrees east of true North, as shown in Figure 2). The Tract B portion of the Site (tax lot 2S101CA00700) is comprised of undeveloped, vegetated land and includes a portion of Redrock Creek, a tributary of Fanno Creek. The adjacent Uplands portion of the Site (tax lot 2S101CA00400) is developed with the former Coe Manufacturing main office building and fabrication warehouse (Building 1), associated outbuildings, and gravel and asphalt-paved parking areas and driveways. The Site is bounded by: 1) SW Hunziker Road and commercial/light industrial properties to the north; 2) SW Wall Street and undeveloped land to the east; 3) the Middle Parcel (undeveloped land and a dog park) to the south; and 4) commercial/light industrial properties to the west across Redrock Creek. AMEC Earth & Environmental, Inc. 2 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 2.1 ENVIRONMENTAL SETTING This section summarizes the existing topography and drainage, land uses, and soil, geology and hydrogeology conditions influencing the Site. 2.1.1 Topography and Drainage The elevation at the Site is at approximately 150 feet above mean sea level, as shown on Figure 1. The topography of the Site is relatively flat, with a majority of the precipitation either evaporating or infiltrating into the underlying soil. Stormwater runoff from the gravel-paved portion of the Site parking and storage areas south of Building 1 generally flows into Redrock Creek near the southwest corner of Building 1. Roof drains on the west side of Building 1 discharge directly into the creek via submerged outfalls. Stormwater runoff from the asphalt paved parking area adjacent to the north and east of the Site flow into an existing City of Tigard municipal stormwater system that discharges into Redrock Creek at an outfall located near the northeast corner of Building 1. This portion of the municipal stormwater system also receives stormwater runoff from SW Hunziker Road to the north and east of the Site, commercial and industrial properties to the north and east of the Site along SW Hunziker Road, and State Highway 217 to the north. 2.1.2 Land Use Land use in the vicinity of the Site property is predominantly light industrial and commercial. City of Tigard land use and zoning information indicates the area around the Site is zoned light industrial (City of Tigard, dated February 26, 2010). 2.1.3 Soil Review of a soil map from the Soil Survey of Washington County, Oregon, indicated that four soil series are mapped on the Site and include silt loarns and silty clay foams of the Aloha, Cove, Huberly, and Verboort series. Two of these soil series, the Cove and Huberly series, are considered to be hydric soils by the Soil Conservation Service. Hydric soils are soils that have developed under consistent, water saturated conditions. Both the Cove and Huberly soils are found on the western portions of the Site near the banks of Redrock Creek. Previous investigations at the Site have included multiple subsurface borings. Soil boring logs indicate that Site subsurface soils generally consist of imported gravel and sandy silt fill material from 0 to 3 ft bgs underlain by silt and silty clay with trace fine sand to a depth of at least 20 feet below ground surface (bgs). AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 3 K:\11000\11600\116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 2.1.4 Geology and Hydrogeology The near-surface geology of the site and surrounding properties consists of younger and older alluvium (river-borne sediments) consisting of clay, silt, sand with lesser amounts of peat (USGS Water Supply Paper 111697, dated 1965). The younger alluvium on the Site is related to Redrock Creek, which borders the Site on the west. This alluvium is not expected to be greater than 10 feet thick adjacent to the stream. Older alluvium, which underlies the majority of the subject site, includes materials from recent time to late Pliocene in age (3 million years). Shallow groundwater has been encountered at the Site between 2 to 4 feet bgs. Five permanent groundwater monitoring wells are located on the Site. Groundwater elevation data indicate that shallow groundwater on the Site flows to the west-northwest, toward Redrock Creek, consistent with surface topography. 2.1.5 Surface Water Features and Wetlands The Site property is located within the Tualatin River watershed. Redrock Creek, which is located along the western boundary of the site, flows south into Fanno Creek approximately 0.25 miles southwest of the Site. Fanno Creek discharges to the Tualatin River approximately 2 miles south of the Site. 2.2 PREVIOUS INVESTIGATIONS AND REMEDIAL ACTIONS From 1994 to 2011, a series of environmental investigations and an interim remedial action measure (IRAM) have been performed by AMEC and others on the Site. A brief summary of the most recent activities is provided below. Figures showing pertinent historical data generated during the previous field activities are presented in Appendix A. For a more complete summary of prior investigative and interim remedial measures, please refer to the previous reports and documents referenced in Sections 2.2.1 to 2.2.6, below. 2.2.1 Site Investigation Summary Report and Baseline Human Health Risk Assessment The Site Investigation Summary Report (AMEC, 2009a) summarized data collected on the Site from 1994 to 2009 by AMEC and others. The Site Investigation Summary Report included a baseline human health risk assessment and a Level I scoping ecological risk assessment. In the baseline human health risk assessment, AMEC identified potential risk to occupational and excavation workers from direct contact with elevated concentrations of arsenic and polychlorinated biphenyls (PCBs) in shallow soil located near the southwest corner of Building 1. These potential AMEC Earth & Environmental, Inc. 4 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 human health risks were subsequently mitigated on the Front Parcel Uplands (tax lot 2S101CA00700) by the soil removal IRAM performed in 2010 and 2011 (Section 2.2.5). AMEC also identified the potential for vapor intrusion risk to future indoor occupational workers from concentrations of ethylbenzene detected in subsurface soils located near the south side of Building 1. However, subsequent sub-slab soil vapor sampling performed inside Building 1 by AMEC in 2010 and 2011 indicated that subsurface contamination did not pose vapor intrusion risk to building occupants (Sections 2.2.3 and 2.2.5). In the Level I scoping ecological risk assessment, AMEC concluded that complete exposure pathways potentially existed between constituents of interest (COls) detected in potential ecological habitat in and adjacent to Redrock Creek in Tract B and recommended a Level II ecological screening of sediment, surface soil, and groundwater data for the larger Front Parcel. 2.2.2 Level II Ecological Risk Screening AMEC performed a Level II Ecological Risk Screening for the Site (AMEC, 2010a). In the Level II Ecological Risk Screening, AMEC identified the following exceedances of ecological risk screening level values (SLVs): Groundwater Volatile petroleum constituents had previously been detected in shallow groundwater at concentrations exceeding their respective surface water SLVs in soil borings located near the southwest corner of Building 1, in an area presumed to be up-gradient of Redrock Creek. AMEC concluded that because these constituents had not been detected in Redrock Creek sediment or surface water at concentrations exceeding SLVs, petroleum constituents detected in groundwater did not appear to have been transported to Redrock Creek in significant quantities. AMEC subsequently collected additional groundwater and porewater data in 2010, which indicated contamination detected near the southwest corner of Building 1 does not appear to be migrating to Redrock Creek in quantities that would pose potential risk to ecological (or human health) receptors (Section 2.2.3). Surface Soil Potentially complete exposure pathways evaluated in the screening of surface soil were: (1) direct contact with surface soil by terrestrial receptors in the limited areas of Tract B where potential ecological habitat exists, and (2) potential risk to aquatic receptors from surface soil potentially available to be transported to Red rock Creek by overland stormwater flow. Arsenic, chromium, copper, manganese, lead, zinc, and PCBs were detected in one or more surface soil samples on AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 5 K:\11000\11600\116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amed9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 the Front Parcel Uplands and/or in Tract B at concentrations that exceeded their respective SLVs for potentially complete exposure pathways. The majority of these areas were subsequently mitigated on the Front Parcel Uplands by the soil removal IRAM performed in 2010 and 2011 (Section 2.2.5). This Work Plan will address areas of surface soil in Tract B and in limited areas of the Uplands surface soil outside the prior IRAM excavations where concentrations of constituents of concern (COCs) exceeding their respective SLVs are present. Redrock Creek Sediment Arsenic, cadmium, lead, zinc, polynuclear aromatic hydrocarbons (PAHs), and PCBs detected in one or more Redrock Creek sediment samples in Tract B exceeded their respective SLVs. After additional Tract B remedial investigation activities were completed in 2011 (Section 2.2.6), the following constituents of concern were indentified in Redrock Creek sediment for mitigation and will be addressed in this Work Plan: lead, zinc, and PCBs. 2.2.3 Front Parcel Uplands Remedial Investigation Supplement In October 2010, AMEC performed supplemental remedial investigation activities to complete the delineation of subsurface soil and shallow groundwater contamination identified on the Front Parcel Uplands near the southwest corner of Building 1, and to evaluate whether it posed potential risk to human health or ecological receptors (AMEC, 2010d). AMEC performed the following investigation activities to address data gaps remaining from previous investigations. Porewater Sampling Porewater sampling was conducted in Redrock Creek within 5 feet of the Site bank, downgradient from the previous upland sample locations where the highest concentrations of petroleum volatile organic compounds (VOCs) were detected in shallow groundwater sample AB-10 (Appendix A, Figure 1A). The purpose of the porewater samples was to evaluate whether contaminant detected in shallow groundwater south and west of Building 1 are discharging to Redrock Creek at concentrations that could pose potential risk to ecological receptors in the creek. No VOCs were detected in shallow porewater sample collected from the 10 cm depth interval below the mud line. AMEC personnel were not able to collect a porewater sample from the planned 30 cm or deeper depth intervals due to the presence of very stiff silt and/or clay formation that did not produce any collectable water. The presence of the stiff silt and/or clay layer with low porosity observed during porewater sampling in the creek bed is consistent with the silty clays encountered in previous direct-push borings located in upland locations near the creek. AMEC Earth & Environmental, Inc. 6 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amee9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Based on the absence of detection of VOCs in the shallow porewater sample, the absence of detection of VOCs in historical Redrock Creek surface water samples (AMEC, 2009a), and the presence of a low porosity silt/clay subsurface layer beneath and adjacent to Redrock Creek, AMEC concluded that the VOCs detected in shallow groundwater near the southwest corner of Building 1 are unlikely to discharge to Redrock Creek at concentrations that would pose a potential risk to ecological receptors. Direct-Push Soil and Groundwater Sampling Two direct-push shallow groundwater samples were collected inside Building 1 to: (1) further delineate the extent of VOCs in shallow groundwater; (2) evaluate whether a potentially significant source of contamination is located beneath Building 1; and (3) evaluate whether groundwater contamination beneath the building poses potential vapor intrusion risk to building occupants. Toluene was detected in one groundwater sample collected inside Building 1 at a concentration less than potentially applicable human health risk-based concentrations (RBCs) and significantly less than toluene concentrations detected in previous samples outside Building 1. No other VOCs or petroleum hydrocarbons were detected in either of the two groundwater samples collected inside Building 1. Sub-slab Soil Vapor Sampling Two sub-slab soil gas samples were collected beneath Building 1 to evaluate whether ethylbenzene or other VOCs detected in previous subsurface soil or groundwater samples collected outside the building were present beneath the slab at concentrations that could pose potential vapor risk to building occupants. Concentrations of VOCs detected in the two samples were several orders of magnitude below their respective Vapor Intrusion into Buildings RBCs for occupational receptors. Based on the results of the sub-slab soil gas sampling, AMEC concluded that soil and groundwater contamination do not appear to be present beneath Building 1 at concentrations that would pose a potential risk to building occupants. 2.2.4 Partial NFA- Front Parcel Building and Paved Parking Areas On December 7, 2010, DEQ issued a partial NFA determination for a portion of the Front Parcel Uplands (tax lot 2S101CA00400) covered by Building 1 and the paved parking areas (DEQ, 2010). DEQ issued the NFA based on the findings presented by AMEC in the Front Parcel Investigation Summary Report (Section 2.2.1) and the Front Parcel Remedial Investigation Supplement (Section 2.2.3). AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 7 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amee 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 2.2.5 Front Parcel Uplands Soil Removal IRAM From December 2010 through April 2011, AMEC assisted RealNet in performing a three-phase soil removal TRAM on the Front Parcel Uplands. The purpose of the IRAM was to remove areas of Front Parcel Uplands surface soils (i.e., from ground surface to 3 feet below ground surface [bgs]) where COCs exceeding human health and/or ecological risk screening levels were identified in previous investigations. COCs exceeding human health and/or ecological risk screening levels in Front Parcel Uplands surface soil were PCBs, lead, and ethylbenzene. Ethylbenzene and related volatile petroleum constituents appear to be limited to a small area adjacent to the west side of the compressor shed and the south side of Building 1. On February 11, 2011, AMEC collected a sub-slab soil vapor sample inside Building 1, approximately 10 feet to the northeast of the compressor shed, to evaluate potential vapor intrusion risk from ethylbenzene and volatile petroleum contamination identified in soil samples collected from the wall of the soil excavation along the edges of the shed and Building 1 slabs. No volatile petroleum constituents were detected in the sub-slab soil vapor sample, indicating that the petroleum contamination detected in soil located near the edges of the shed and Building 1 slabs does not pose vapor intrusion risk to building occupants. Based on the analytical data and the available information regarding past operations, the suspected sources of PCBs on the Front Parcel Uplands are believed to have been surface spills or releases of compressor oil and petroleum products near the compressor shed and the south side of Building 1. Overland stormwater transport of surface soil in these unpaved areas of the Front Parcel appears to have transported PCBs and lead (a common parking area/roadway stormwater runoff pollutant) toward the low-lying areas adjacent to Redrock Creek. Soil IRAM activities on the Front Parcel Uplands focused on removing areas of shallow soils where PCB concentrations detected in previous soil samples exceeded human health and/or ecological screening levels. The soil removal activities consisted of: • Initial soil removal, backfilling, and confirmation sampling conducted on December 23, 2010; • Additional direct-push delineation soil sampling conducted on February 4, 2011; and • Additional soil removal, backfilling, and confirmation sampling conducted from April 11 to 13, 2011. PCBs detected in three of the confirmation samples collected along the perimeters of the April 2011 soil excavations substantially exceeded the Portland Harbor Joint Source Control Strategy (JSCS) Soil/Stormwater Sediment SLV (DEQ and EPA, 2007). To address the SLV exceedances AMEC Earth & Environmental, Inc. 8 Project No.: 0-61M-116854 K:\11000111600111685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan /9 Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 in confirmation samples, AMEC prepared an Addendum to the Uplands Shallow Soil Removal IRAM Work Plan (AMEC, 2011d). In the IRAM Work Plan Addendum, AMEC proposed removing shallow soil from two additional excavation areas on the Site Uplands (Excavation 1 BB and 2A, Figure 5). These additional soil removal activities will be performed concurrently with the Tract B soil and sediment removal activities outlined in this Work Plan. 2.2.6 Tract B Remedial Investigation In June and July 2011 AMEC performed additional sampling of Tract B soil and Redrock Creek sediment as outlined in the Tract B Remedial Investigation (RI) Work Plan (AMEC 2011c, 2011e). The purpose of this investigation was to complete the delineation of COCs identified in previous investigations in Tract B surface soil and Redrock Creek sediment The identified COCs for the Tract B surface soils are arsenic, chromium, copper, lead, manganese, zinc, PCBs. As discussed in AMEC's February 7, 2011 letter to DEQ (AMEC, 2011a), neither copper nor manganese warrant further consideration as a COC because detected concentrations of these constituents are consistent with their respective Tualatin Basin regional background values and there are no known significant anthropogenic sources of these constituents on the Front Parcel. The identified COCs for the Tract B Redrock Creek sediments are: arsenic, cadmium, lead, zinc, PCBs, and polynuclear aromatic hydrocarbons (PAHs). In their letter, dated May 27, 2011, DEQ concluded that additional sampling of arsenic in Redrock Creek sediments was not needed because the few exceedances detected are marginally above the sediment background value and would likely not drive sediment cleanup (DEQ, 2011a). In the same letter, DEQ stated that it did not consider cadmium to be either an upland or sediment COC and it could be eliminated from further evaluation in the remedial investigation. The 2011 Tract B Remedial Investigation activities consisted of: • Collecting soil samples from 14 direct-push soil borings on June 20, 2011, in order to complete the delineation of the lateral and vertical extent of COCs in Tract B shallow soils (i.e., arsenic, chromium, lead, zinc, and PCBs), and • Collecting surficial sediment samples from 34 locations in Redrock Creek on July 7, 2011 in order to complete the delineation of the lateral extent of COCs (i.e., lead, zinc, PAHs, and PCBs). Analytical results from the 2011 and previous Tract B shallow soil and sediment samples are presented in Appendix A in Figures 1A to 9 and Tables A.1 and A.2. Copies of laboratory analytical reports for the 2011 Tract B samples are provided in Appendix A. AMEC Earth & Environmental, Inc. Project No.• 0-61M-116854 9 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Based on the preliminary risk screening of the Tract B analytical results, AMEC and DEQ came to concurrence on removal action objectives to guide the removal of the three most widespread COCs detected in Redrock Creek sediment: lead, zinc, and PCBs. In a letter, dated September 2, 2011 (DEQ, 2011 b), DEQ established Site-specific remedial action levels for lead, zinc, and PCBs based on Probable Effects Levels (PELs) for freshwater sediment (Smith et al., 1996). As stated in their September 2, 2011 letter, DEQ determined that PELs are appropriate Site- specific remediation levels to protect the environment given the relatively small areas of impact. Potential bioaccumulation impacts on fish, birds, and mammals were also considered by comparing site sediment concentrations with DEQ sediment bioaccumulation screening levels (DEQ, 2007). Many of the sediment samples collected adjacent to and upstream of the Site had detected chemical concentrations above screening levels. However, because of the plan to remediate sediment based on potential threats to benthic organisms, the highest concentrations of chemicals in sediment are targeted for removal. The contaminated areas that will remain after removal will be relatively small compared with the local population areas of fish, birds, and mammals used for evaluating bioaccumulation impacts. For this reason, DEQ determined that it is not necessary to remediate all sediment to bioaccumulation levels. The sediment remedial action levels are provided in Section 3.1.1. 2.3 CONCEPTUAL SITE MODEL Available information regarding the historical processes and materials handled on the larger former Coe Manufacturing property is limited. No significant releases of chemical materials have been documented on the property. It is believed that COls detected on the larger property are the result of multiple, small, undocumented surface releases on the south side of Building 1 related to: 1) surface spills or releases of compressor oil and petroleum products near the compressor shed on the south side of Building 1; 2) outdoor vehicle or chemical container storage; 3) outdoor heavy equipment storage or washing; and/or 4) stormwater runoff from parking areas and driveways. Overland stormwater transport of surface soil in unpaved areas of the Front Parcel Uplands appears to have transported COls from release areas on the Front Parcel Uplands to Tract B surface soil and into the adjacent Redrock Creek sediment. Consistent with this conceptual site model, detected concentrations of COls in Tract B surface soil have generally been highest in unpaved areas that have been incised by stormwater flow and COls detected in Redrock Creek sediment have generally been highest adjacent to and downstream from areas where overland stormwater flow enters the creek. Because COIs detected in sediment are believed to have resulted from transport of contaminated surface soils via overland stormwater flow into the creek, AMEC Earth & Environmental, Inc. 10 Project No.: 0-61M-116854 K:\11000\11600\116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Coe Manufacturing Property— Front Parcel, Tigard, Oregon 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 ameci deposition of COIs in sediment is anticipated to be limited to the upper 6 inches of surficial creek sediment. 3.0 REMOVAL ACTION OBJECTIVES The objectives of the Removal Action are to: 1. Remove the upper 6-inches of fine-grained sediment from the sediment/water (S/W) interface from areas of Redrock Creek where analytical data indicate one or more COCs exceed remedial action levels; 2. Remove shallow soil (i.e., from ground surface to depths up to 3 feet below ground surface) from areas of Tract B where analytical data indicate one or more COCs exceed remedial action levels or risk-based screening level values; and 3. Remove shallow soil (i.e., from ground surface to 1 foot below ground surface) from areas of the Front Parcel Uplands Tract B where analytical data indicate PCB concentrations exceed risk-based screening level values. 3.1 PROJECT ACTION LIMITS The Site-specific Project Action Limits are provided in the Sections 3.1.1 and 3.1.2, below. 3.1.1 Remedial Action Levels Site-specific remedial action levels will be used to evaluate if shallow soil or sediment may pose potential risk to human health or environmental receptors and will be used to guide removal of shallow soil and sediment. Site-specific remedial action levels for shallow soil and sediment are provided in Table 3.1.1, below. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 11 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amee 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Table 3.1.1: Remedial Action Levels Media Constituent Remedial Action Units Notes Level Total Arsenic 7 mg/kg JSCS Soil/Stormwater Sediment SLV Total Chromium 111 mg/kg JSCS Soil/Stormwater Sediment SLV Total Lead 91.3 mg/kg Probable Effects Level Soil Total Zinc 459 mg/kg JSCS Soil/Stormwater Sediment SLV Aroclor 1254 0.3 mg/kg JSCS Soil/Stormwater Sediment SLV Aroclor 1260 0.2 mg/kg JSCS Soil/Stormwater Sediment SLV Total Lead 91.3 mg/kg Probable Effects Level Sediment Total Zinc 315 mg/kg Probable Effects Level Total PCBs 0.277 mg/kg Probable Effects Level Notes: mg/kg=milligrams per kilogram. JSCS Soil/Stormwater SLV=Portland Harbor Joint Source Control Screening Level Value for Upland Soil/Stormwater Sediment, Table 3-1,July 16,2007 Revision(DEQ and EPA, 2007). Probable Effects Level = Probable Effects Level for Freshwater Sediment(Smith et al., 1996). 3.1.2 Waste Characterization Regulatory Limits Waste characterization regulatory limits will be used to determine the final disposition of materials generated by the removal action activities, including sediment, soil, and granular activated carbon (GAC) generated during the project work. Waste characterization regulatory limits for the project are provided in Table 3.1.2, below. AMEC Earth & Environmental, Inc. 12 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Table 3.1.2: Waste Characterization Regulatory Limits Waste Type Constituent Regulatory Level Units Notes If total arsenic exceeds 100 Total Arsenic 100 mg/kg mg/kg,waste would be analyzed for toxicity by TCLP. TCLP Arsenic 5 mg/L 40 CFR 261-21-24 Non- If total chromium exceeds hazardous 100 100 mg/kg,waste would be sediment/soil/ Total Chromium mg/kg analyzed for toxicity by and GAC TCLP. material disposal at TCLP 5 mg/L 40 CFR 261-21-24 Subtitle D Chromium Disposal If total lead exceeds 100 Facility mg/kg,waste would be Total Lead 100 mg/kg analyzed for toxicity by TCLP. TCLP Lead 5. mg/L 40 CFR 261-21-24 PCBs 50 mg/kg 40 CFR 761 Hazardous TCLP Arsenic >5 mg/L 40 CFR 261-21-24 sediment/soil/ and GAC TCLP >5 mg/L 40 CFR 261-21-24 material Chromium disposal at Subtitle C TCLP Lead >5 mg/L 40 CFR 261-21-24 Disposal Facility PCBs >50 mg/L 40 CFR 761 Notes: mg/kg=milligrams per kilogram; mg/L=milligrams per liter; TCLP=Toxicity Characteristic Leaching Procedure 4.0 REMOVAL ACTION The removal action will consist of removing impacted sediment within Redrock Creek and selected areas of upland shallow soil. The removal action will be completed in the following six phases of construction: Phase 1: Project Preparation, Phase 2: Sediment Removal; Phase 3: Soil Removal; Phase 4: Confirmation Sampling; Phase 5: Site Restoration; and Phase 6: Material Management Each phase is discussed in greater detail below. Ancillary tasks completed as part of the removal action include: determining substantive requirements of permitting agencies, property access coordination, equipment and material AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 13 K:\11000\11600111685\116854 Front Parcel\Tract B1Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amee9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 mobilization/demobilization, construction of the sediment dewatering area, final site survey, and stakeholder communication. For planning purposes, the volume of sediment and soil requiring excavation and management were estimated using the results of the previous investigations and the DEQ-approved Remedial Action Levels. The Removal Action will consist of removal of approximately 50 cubic yards (CY) of contaminated sediment below the ordinary high water mark in Redrock Creek. The estimated volume, 50 CY (85 Tons) of sediment, is estimated for the removal action, based on the following assumptions: • Sediment removal will extend from the sediment/water (SAN) interface to an estimated maximum depth of 6-inches below the S/W interface for each of the removal areas identified in Figure 3 and Figure 4; and, • The conversion from volume to weight is based on a conservative unit conversion factor of 1.7 tons per CY of sediment. The estimated quantity of water generated from sediment dewatering is approximately 1,700 gallons assuming the total of volume of water removed from the sediment is equal to the effective saturated sediment porosity of 0.15. The total estimated upland soil that will be removed is approximately 72 CY (115 Tons, assuming a unit conversion factor of 1.6 tons per CY of soil). 4.1 PHASE 1 : PROJECT PREPARATION The successful execution of the removal action depends on detailed project planning and project preparation. AMEC will ensure that the necessary project preparation is completed before beginning the proposed removal action at the property. It is anticipated that the on-Site portion of the project preparation work will be completed in two business days, before the removal activities begin at the Site. 4.1.1 Project Management AMEC will be responsible for the implementing and overseeing the sediment and soil removal, including subcontractor procurement, review of all documents, site-work coordination, and will be responsible for the overall work of the subcontractors. AMEC's Field Manager will perform day-to- day project oversight during implementation of the removal action and will direct subcontractors for work performed at the property for the execution of the Work Plan. Subcontractor procurement is anticipated in the following work areas: earthwork, transportation/trucking, analytical, and surveying. AMEC Earth & Environmental, Inc. 14 Project No.. 0-61M-116854 K'\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amee9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Each subcontractor will provide a task manager, who will supervise and provide technical direction to their team, and ensure the work is being conducted in accordance with this Work Plan. Open lines of communication will be maintained between each of the subcontractor's task manager and the AMEC Field Manager to ensure all activities are being conducted in accordance with this Work Plan. The contact information for the anticipated Project Team is presented in the Table 4.1.1 below. Table 4.1.1: Project Team Project Personnel Responsibility and/or Title Organization Chuck Harman Regulatory Agency Oversight DEQ Project Manager Art Johnstone Former Coe Ownership Group RealNet Representative Charles Esler, CHMM Project Principal/Reviewer AMEC Joel Eledge, CHMM Project Manager AMEC Heidi Nelson P.E. Environmental Engineer AMEC Joe Fassio, R.G. Field Manager AMEC Maya Villarreal Permitting Coordinator AMEC TBD Surveying Subcontractor Tom Nelson and Associates, LLC TBD Earthwork Subcontractor TBD TBD Transportation Subcontractor TBD Philip Nerenberg Analytical Subcontractor Apex Laboratories TBD=To be determined Record Keeping All field activities, including sediment and soil removal, turbidity monitoring activities, and restoration, will be documented and managed by AMEC's Field Manager with input from the subcontractor's task managers, as needed. Project oversight will be documented on the appropriate forms and in field notebooks, as well as through photographic documentation. Daily Field Reports The AMEC Field Manager will prepare a Daily Field Report (DFR) documenting the completed work for each day. A typical DFR form is included in Appendix B. Evidence of safety meetings and any other relevant documentation (permits, records of inspections, etc) shall be recorded on the AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 15 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 DFRs and maintained in the job file throughout the duration of the project. The DFR shall include the following information, at a minimum: • A log of the personnel/subcontractors present at the tailgate safety meeting; • A site visitor log to record visitors, including regulatory agency representatives, vendors, or inspectors (provide name, affiliation, and purpose of visit and time on/off the site); • Equipment and supplies delivered and used at the project; • A summary of the work completed and significant progress achieved during the day; • A description of any Quality Assurance (QA)/QC program inspections, or problems encountered during the work day. The DFR will also include a record of the samples that are collected during the day. Photographs will also be taken on a daily basis to document progress of the removal action during each phase of work. Health and Safety Requirements The top priority during implementation of the removal action is to conduct all activities in a manner that is protective of workers, the public, and the environment. In order to achieve this goal, the following procedures will be followed: • Each subcontractor will conduct the work in accordance with the project—specific HASP; • An exclusion zone will be established around the active work area; • Excavation equipment will be decontaminated before it leaves the Site; • Erosion control measures will be implemented within the work areas. All subcontractor personnel performing duties will have met 29 CFR 1910.120 and 29 CFR 1926.65(e) 40-hour Hazardous Waste Operations and Emergency Response Standard (HAZWOPER) training requirements. The Contractor will provide documentation of all completed training requirements for all on-site personnel prior to initiation of work. On-site training for subcontractors will include an overview of general safety, health and security procedures, and policies; overview of project specific rules and regulations; and an overview of the types of constituents that may be encountered at the Site. A safety briefing will be delivered to all personnel prior to initiating work each day and at any other times warranted by changing work scope, type of work, or site/weather conditions. The safety AMEC Earth & Environmental, Inc. 16 Project No.: 0-61M-116854 K\11000\11600\116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan 101 Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 briefing will reiterate safety precautions and work procedures outlined in the HASP. Evidence of safety meetings and any other relevant documentation (permits, records of inspections, etc.) will be recorded on a DFR and maintained in the job file throughout the duration of the project. In the event of a spill or release of a hazardous substance (as designated in 40 CFR 302 and in Oregon rules), pollutant, contaminant, or oil (as governed by the Oil Pollution Act (OPA), 33 U.S.C. 2701 et seq. and Oregon law) the subcontractor will perform immediate containment actions to minimize the effect of the spill or leak. Any additional cleanup actions will be completed in accordance with Federal, State, and local regulations. Quality Assurance/Quality Control Requirements QA/QC procedures will be implemented to ensure the remedial action remedy and construction procedures are performed in accordance with the approved plans and specifications and support the intent of the Amended Consent Order. A QA/QC program provides effective QC organization and methods of performing, documenting, and enforcing QC operations of both the AMEC Field Manager and the subcontractors throughout completion of the construction activities. The AMEC Field Manager will ensure that QA/QC procedures are followed throughout the removal action and on a day-to-day basis. Specific QA/QC procedures will also be required during confirmation sampling and inspections, to help field staff, data users, and project stakeholders ensure the project is conducted in a way that supports the remedial action objectives. The QA/QC methods, specific to the sampling tasks performed during the construction activities, are outlined in the confirmation sampling section below (Section 4.3). Following the procedures outlined below also ensures the data collected will meet the project needs and helps ensure that the project quality control steps are built into the project from the beginning. 4.1.2 Environmental Permitting AMEC performed a review of Federal, State, and local regulatory requirements potentially applicable to the removal action. Oregon Revised Statute (ORS) 465.315(3) exempts the on-site portion of DEQ-approved removal actions from State and local permitting requirements. However, the substantive requirements of applicable regulations will be met during the removal action. AMEC consulted with the United States Army Corps of Engineers (USACE), the Oregon Department of Fish and Wildlife (ODFW), the DEQ, the Oregon Department of State Lands (DSL), Washington County, Clean Water Services, and the City of Tigard to determine substantive requirements that may apply to the regulatory action. The results of the regulatory review are summarized as follows: AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 17 K:111000\11600111685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amee9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Federal Regulatory Requirements: - A Nationwide 33 Permit was submitted to the USACE for temporary fill associated with installation of the aquatic habitat and water protection measures described in Section 4.1.3 below. • State Regulatory Requirements: - ODFW determined there are no Endangered Species Act listed fish at the work area. The in-water work period designated by ODFW for Redrock Creek is July 15 through September 30. ODFW approved a work-window extension through November 30 for the removal action. - ODFW determined there is a potential for native and non-native turtles and amphibians to occur in the work area. In accordance with ODFW recommendations, wildlife encountered during the removal action field event will be salvaged according to the Standard Operating Procedure included as Appendix D. - A Joint Removal Fill Permit Application will be submitted to the DSL for purposes of project notification for removal of material within Redrock Creek. • Local Regulatory Requirements: - A Sensitive Land Use Review application will be submitted to the City of Tigard for work within a water body and flood plain. As part of the Sensitive Land Use Review, a Sensitive Area Certification Form was submitted to Clean Water Services for review. Copies of agency correspondence and submitted applications are included in Appendix D. 4.1.3 Aquatic Habitat and Water Protection Measures Aquatic habitat and water quality protection measures will be implemented prior to beginning the removal action. The protection measures include the following: • A steel sheet pile check dam will be installed on the up-gradient boundary of the sediment removal area Section A, directly downgradient of the City of Tigard storm sewer culvert that discharges to the creek. Sand bags may be placed along the check dam to provide additional flow control at the check dam. The check dam will minimize the amount of water flowing into the work area by creating a temporary surface water reservoir up-gradient of the check dam. The volume of the temporary reservoir will consist of the additional storage capacity of the up-gradient City of Tigard stormwater culvert and indentations of the stream bank elevation along the creek. Once the temporary surface water reservoir reaches its maximum storage capacity (below the top of the check dam), the surface water will be diverted by pumping water from the up-gradient reservoir and discharging through bypass piping to downgradient of the sediment removal area. AMEC Earth & Environmental, Inc. 18 Project No.: 0-61M-116854 K:111000111600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amen 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Geotextile turbidity curtains will be installed directly up-gradient and directly down- gradient of each of the sediment removal Section A, Section B, Section C, and on the combined area of Sections D, E, and F. A secondary turbidity curtain will be installed at the down-gradient end of the sediment removal area downgradient of Section F. The downgradient curtain at Section F and secondary turbidity curtains will be installed a maximum distance of 10 feet apart. The sediment turbidity curtains will minimize potential increases in turbidity downgradient of the work area. Sediment turbidity curtains will be composed of a permeable medium-duty, marine-grade filter geotextile. The effectiveness of the protection measures will be monitored as described in Section 4.2 below. The proposed locations of the protection measures are shown in Figures 3 and 4. If heavy rain events are encountered, the protection measures may be modified, including diverting run-off from entering the creek from any of the on-Site areas up-gradient of the stream. Erosion and Sediment Control Temporary erosion, sediment, and pollutant controls will be utilized during the removal activities to protect the creek. The following best management practices (BMPs) will be used, as necessary, at the Site: • Straw wattles along the top of the stream bank in areas where any vegetation is removed near the creek, leaving exposed soil; • Sediment staging area management; • Mitigation of wind-blown dust during soil excavation; • Jute matting and hydroseed, across areas where vegetation was removed along the stream bank, following construction activities; and • Routine BMP inspections and maintenance, if needed. If needed, the BMPs will be installed in accordance with the manufacturer's instructions. During the construction activities, storm water runoff from the Site will be directed to vegetated areas up- gradient of the stream, where the storm water will infiltrate. Jute matting will be placed along the stream bank and restored berm areas during the restoration phase of the work, to reduce the potential for erosion in the restored areas until vegetation is established. The BMPs will be routinely inspected during the sediment removal activities. The results of the BMP inspections will be documented on the DFR Form (Appendix B). 4.1.4 Utility Locating The local public utilities will be notified using the Oregon Utility Notification Center to field-mark any underground utility lines prior to performing the removal action. A private utility locating service will AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 19 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 be used to locate utilities in the vicinity of outfall locations prior to work. In addition, individuals knowledgeable regarding shallow utilities within the facility will be consulted regarding underground utilities. The utility locating will be completed before any site preparation occurs. 4.1.5 Site Preparation The construction activities will be coordinated by AMEC. AMEC will notify DEQ a minimum of five days before the sediment removal subcontractor(s) mobilize to the property. Mobilization and Setup Mobilization and setup at the Site includes transporting of project personnel, equipment, and supplies to the property; and establishing work zones, sanitation facilities, and other facilities necessary to safely and efficiently carry out the prescribed work. All equipment delivered to the Site will be maintained in operating condition at all times. The earthwork subcontractor will establish the work areas, staging areas, and transportation routes including areas designated for equipment decontamination. Equipment will be secured overnight within the fenced storage area. Personal vehicles will be parked in the employee parking area. Station markers will be installed at 25-foot intervals along the creek before any other work is started at the Site. Vegetation Removal Vegetation removal will be minimized along the creek to the maximum extent practical. Vegetation will only be removed, as necessary, to allow equipment access to the creek during the removal action (Figure 3 and Figure 4). Vegetation removal is expected near Sections B and Section E. Vegetation removal near Section B will consist of removing the low-hanging overhead branches. Vegetation removal near Section E will consist of removing approximately 15-feet area of blackberry vines to gain access to the stream. Vegetation removal will be limited to vegetation with diameter at breast height (dbh) of less than 4-inches and overhead limbs of less than 6-inches. If necessary, the areas where vegetation removal is performed will be graded to prevent ponding and/or stormwater runoff into the stream. Up to 1,000 square feet of area along the stream may require vegetation removal. Organic debris within the stream will also be removed to access the underlying sediment. Organic debris may consist of downed branches and twigs within the stream. Vegetation and organic debris removed from the stream access areas will be stockpiled in a flat area between the stream bank and the access road, shown on Figure 4. AMEC Earth & Environmental, Inc. 20 Project No.: 0-61M-116854 K:111000111600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame� 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Staging Area Upland soil will be directly loaded into trucks during the soil excavation activities. No staging area is planned for the soil excavation activities. The trucks will use the designated transportation route and will be loaded along the boundary of the exclusion zone. The sediment staging area will be located in the area shown on Figure 4. The staging area will be located within the fenced lay-down yard located in back of the operating facility. Dewatering equipment, including an untreated water and treated water tank, and sediment dewatering boxes will be located within the staging area. The sediment dewatering boxes will be aligned in a manner that allows for optimal filling by the loader operator and easy access for transport from the Site. The sediment dewatering boxes will be lined with a permeable filter fabric to allow the creek surface water to decant. Each dewatering box will be equipped with a ball valve on the bottom to drain the water. Hoses will be connected between the untreated batch tank and the dewatering boxes to transfer the water that drains from the sediment. All dewatering boxes will be covered when not in use. Sediment removal equipment, including an excavator and front end loader will be parked near the staging area when not in use. 4.2 PHASE 2: SEDIMENT REMOVAL The upper 6-inches of fine-grained sediment will be removed from the sediment/water interface (S/W) at removal Section A, Section B, Section C, Section D, and Section E. The sediment removal sections are outlined on Figures 3 and 4. The objective of the sediment removal action is to remove the upper fine-grained sediment and, thereby, reduce the COCs within the creek to the project remedial action levels identified on Table 3.1.1. The sediment removal activities are anticipated to be completed within 4 days after the initial Phase 1, Site preparation activities are completed. The first day will be an idle day to allow the creek to dewater, after the check dam and downgradient turbidity curtains. Additional surface water may be pumped out of select areas where debris obstructions have created ponded water. The upland soil removal activities, described in Section 4.3 below, will be completed during this idle day, while the creek dewatering passively occurs. Surface Water Turbidity Monitoring Monitoring of surface water turbidity will be performed during the sediment removal action to verify the effectiveness of water quality protection measures (Section 4.1.3). At a minimum, surface water will be collected daily at three sampling locations: background, work zone, and downgradient location. The work zone sampling locations will correlate to the sediment work section (Sediment removal Sections A through E). The sample locations and times are listed in Table 4.2. The AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 21 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Ooc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ameco 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 results of surface water quality monitoring will be documented on field forms provided in Appendix B. Table 4.2: Surface Water Turbidity Monitoring Locations and Times Surface Water Sample Location Time of Measurement Background (5-feet up-gradient of the Section Turbidity Beginning of work within corresponding Section Curtain that corresponds to the work area) Down-gradient of Section (5 feet downgradient of the 2 hours after work begins within the Section Section Turbidity Curtain that corresponds to the work Every 4 hours thereafter throughout work day as work area) progresses within that Section Downgradient of Removal Zone (5 feet up-gradient of the 2 hours after work begins each day Secondary Turbidity Curtain) Every 4 hours thereafter throughout work day Surface water samples will be collected in accordance with the Standard Operating Procedures (Appendix D) and as described below in Section 4.4. The results of the turbidity monitoring will be evaluated per the DEQ Turbidity Standard (OAR 340-041-0036): • No more than a 10% cumulative increase in natural creek turbidities may be allowed, as measured relative to a control point immediately upstream of the turbidity causing activity. An exception to the Turbidity Standard has been granted for permitted dredging, construction, or other legitimate activities (DEQ, 2011c). Best management practices will be implemented during the removal action to minimize downstream increases in turbidity to the maximum extent possible; however, the sediment removal action may result in temporary turbidity increases. If turbidity monitoring indicates more than a ten percent cumulative increase in turbidity or is greater than 50 NTUs (whichever is greater), work will be stopped and best management practices will be modified, as necessary. 4.2.1 Sediment Excavation The sediment removal action will consist of the removal of fine-grained sediment from each of the Sections designated on Figure 3 and Figure 4. The fine grained sediment thickness ranges with impacts extending from the sediment/water interface (0 inches) to approximately 6 inches below the sediment/water interface. Additional specifications for each of the specific sections are listed below in Table 4.2.1. AMEC Earth & Environmental, Inc. 22 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\RemovallWork Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Table 4.2.1: Estimated Extent of Sediment Excavation Maximum Width Estimated Section Length Range Area Notes on Removal (ft) (ft) (sf) Large tree branch in the Creek will be removed to access sediment. Section A 20 5 to 6 130 Sediment will be removal to within 2-inches of the high water line at the bank. Overhead branches will be trimmed to access area. Section B 23 6 to 10 200 Sediment removal to within 2-inches of the high water line at bank. Mats needed for access near peninsula at bank, because the sediment removal on far bank is the extent of excavator's reach. Section C 107 5 to 12 1,100 Sediment removal to within 2-inches of the high water line at bank. Debris consisting of twigs and sticks will be removed after the sediment is removed up-gradient of the Station 3+30(Figure 4). Section D 10 5 50 Sediment removal to within 2-inches of the high water line at bank. Mats needed for access near peninsula at bank, because the sediment removal on far bank is the Section E 55 8 to 25 1,200 extent of excavator's reach. Sediment removal to within 2-inches of the high water line at bank. Section F 10 5 50 Sediment removal to within 2-inches of the high water line at bank. The sediment will be mechanically removed using a small hydraulic excavator equipped with a clamshell bucket, or equivalent bucket, operating from the bank. The creek will be accessible from the bank along the length of the sediment removal area, following limited vegetation removal activities described in Section 4.1.5. Before the sediment is removed, the operator will remove large obstructions (e.g. logs, debris, and vegetation) from the creek to allow access to the underlying sediments. A small amount of sediment may be removed using hand equipment if re- suspension is evident following removal using the bucket, or if access with the bucket is restricted. Isolated areas may also be removed using an alternate bucket attachment if the work is conducted in an area of dry sediments. Sediment removed from the creek will be loaded into a watertight container, such as a front end loader with a 6-cubic yard bucket or dumpable metal hopper, and transferred to the sediment dewatering area where it will be placed directly into lined sediment dewatering boxes, or similar AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 23 K:\11000\11600111685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 containment containers depending on container availability, such as 30-cubic yard mud bins, for dewatering. Each box will be filled to approximately 75% capacity. Care will be taken during the removal action activities to prevent sediment tracking along the banks and to avoid undercutting existing side slopes. In the event of slope failure, the fallen soil will be removed from the creek and managed with the excavated sediment. The side slope will be graded minimally to reasonably ensure stability. Work within the creek will be stopped if rain creates a safety hazard or excessive water within the work zone. Sediment Staging Areas Approximately four 15-cubic yard roll-off dewatering boxes, or equivalent, will be required to contain the removed sediment. Each roll-off box will be lined with a non-woven polypropylene filter cloth, above a hexagonal perforated plate on the floor. The dewatering roll-off boxes will remain covered in the staging area to allow the water to drain from the sediment into the bottom containment area of the roll-off box. It is expected that the sediments will be allowed to drain for up to 5-days in the staging area. Daily management of the sediment staging area will include an inspection of the boxes staged within the area. Each box will be numbered sequentially. Following the settling period, a sediment sample will be collected from each dewatering box to determine appropriate management of the sediment. The sediment sample will be analyzed for the site-specific COCs (Section 4.4.4). Sediment management will occur as described below after the final characterization analytical results are received. Sediment Dewatering An estimated 1,500 gallons of water will be generated from sediment dewatering. The water will accumulate within the dewatering boxes. A self-priming, trash pump capable of lifting up to 20 feet of water (or equivalent), will be used to transfer water from the storage compartment of each of the dewatering boxes into a 6,500 gallon poly batch tank. After a short period of settling, the water will directed at a maximum pumping rate of 10 gallons per minute through a bag filter, followed by a 55-gallon drum filled with activated carbon filtration media, in batches. If necessary, a flocculating agent (e.g. chitosan) will be added to the untreated storage tank to accelerate the solids settling time. The treated water will be stored in a 6,500 gallon tank pending analytical testing. The treated water will be tested for sediment COCs (i.e., lead, zinc, and PCBs) and other constituents, if required, for discharge into the City of Tigard sanitary sewer (Table 4.4). 4.2.2 Confirmation Sampling A total of 19 confirmation samples will be collected after the sediment has been removed from the Creek to confirm the COCs are below the applicable screening level (Figures 3 and 4). Before AMEC Earth & Environmental, Inc. 24 Project No.: 0-61M-116854 K\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan i#49 Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 amec- confirmation sampling is conducted, a visual inspection will be completed to confirm that the soft overlying sediments have been removed to the proposed extents. Sediment sampling and sample management will be conducted in accordance with the protocol described in Section 4.5 below. 4.3 PHASE 3: UPLAND SOIL REMOVAL The upland soil will be removed from four areas, Section 1 BB, Section 2A, Section 3, and Section 4, where constituent concentrations were above the screening levels. The four upland soil removal areas are shown on Figure 5. The upland soil removal activities are anticipated to be completed in one day. The work will be coordinated so the soil removal occurs while the creek dewatering activities passively occur. 4.3.1 Soil Excavation Before beginning the soil excavation, the lateral extent of each area will be marked in the field at the boundaries shown on Figure 5 and described in Table 4.3 below. Table 4.3: Estimated Extent of Soil Excavation Average Average Total Estimated Soil Removal Length Width Area Area (ft) (ft) (sf) Section 1 BB 30 25 850 Section 2A 23 15 325 Section 3 20 12 250 Section 4 43 10 450 Section 5 12 5 60 Excavation at each area will include removal of existing surface gravel and underlying soil an estimated maximum depth of 1 foot below the existing ground surface. The excavation depth will be checked periodically as the operator removes soil. The depth of the bucket may also be measured and used to gauge the excavation depths between periodic depth checks by manual measurements. Hand tools may be used to reach soil located directly below the existing fence that cannot be reached using the excavator. The excavated soil will be placed directly in dump trucks for transfer to a permitted off-site disposal facility. The trucks will be loaded in a manner that prevents the spilling, tracking or dispersal of contaminated soils. The work area will be sprayed with water, as necessary, to mitigate any fugitive dust generated during the excavation activities. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 25 K:\11000\11600111685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property-Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 If practicable, truck loading areas should be located at the boundary of the exclusion zone so that trucks will not enter the exclusion zone and require decontamination. Trucks will be broom cleaned before leaving the loading area and all loads will be covered before exiting the Site. 4.3.2 Soil Confirmation Sampling Visual inspection of the excavation areas will be performed to verify that soil has been adequately removed. Additional soil will be removed if there is any evidence of visual staining or odor. A total of 7 confirmation soil samples will be collected from the walls of the completed excavation areas at the locations shown on Figure 5. The soil samples will be collected and managed in accordance with the plan outlined in Section 4.4. 4.4 PHASE 4: SAMPLING All samples will be collected in accordance with the methodology described in the Standard Operating Procedure (SOPs) included in Appendix D. Each sample collected at the Site will be recorded in a field log book and also on the Daily Field Report (Appendix B). The following samples will be collected during the removal action at the Site: AMEC Earth & Environmental, Inc. 26 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amed9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Table 4.4: Sample Requirements Sample Type Sample Location Sample Type/Frequency Sample Analysis Surface Water Quality Up-gradient and downgradient of Daily Grab Sample Turbidity (SW) Section and Downgradient of the (See SOP D-4) work zone Sediment 19 Locations, One-Time Sampling Event, Total Lead and Zinc Confirmation (SC) (See Figures 3 and 4) Discrete Grab Sample by EPA 6000 series (See SOP D-1) PCBs by EPA 8082 Soil Confirmation Locations One-Time Sampling Event, (OS) (See Figure 5) Discrete Grab Sample PCBs by EPA 8082 (See SOP D-1) Dewatered Sediment Dewatering Boxes in Sediment One grab sample per box, TCLP Arsenic and for Waste Disposal Staging Area following sediment Lead (DS) dewatering PCBs by EPA 8082 Discrete Grab Sample (See SOP D-5) Treated Water for Treated Surface Water Batch One discrete grab sample Total Lead and Zinc Discharge(TW) Tank per 5,000 gallons by EPA 6000 series (See SOP D-6) PCBs by EPA 8082 Total Petroleum Hydrocarbons by NWPTH-Gx and -Dx, if vehicle decontamination water is generated Additional analytes, if required by the City of Tigard for discharge to the municipal sanitary sewer The sampling collection and handling procedure for each of the sample types are described in the following sections. 4.4.1 Surface Water Quality Sampling Surface water samples will be collected during the in-water work to monitor turbidity within the creek. At the beginning of each work day and when beginning work in a new sediment removal section, surface water quality will be established at three surface water monitoring stations: (1) an up-gradient station, (2) a down-gradient station, and (3) an overall down-gradient work zone monitoring station located approximately 5-feet up-gradient of the secondary turbidity curtain. The AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 27 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard. Oregon amee 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 approximate monitoring stations for each of the in-water work sections are shown on Figures 3 and 4. At Section A, the up-gradient monitoring station will be located 5-feet up-gradient of the check dam. For Sections B, C, and D the up-gradient monitoring stations will be located 5-feet up-gradient of the up-gradient turbidity curtain for each respective work Section. The up-gradient monitoring station for Sections E and F will be located 5-feet up-gradient of the Section E up-gradient turbidity curtain. Surface water samples will be collected throughout each work day. Samples from the up-gradient and downgradient sampling points will be collected at a minimum of twice daily, beginning 2-hours after work begins, and every 4 hours thereafter. Samples will be analyzed in the field for turbidity, at a minimum. If turbidity increases by more than 10% in the downgradient sample compared to the background sample result, a duplicate sample will be taken to verify the results. If the duplicate sample confirms the difference is greater than the allowable difference of 10%, the in-water work will be stopped until the turbidity meets the background levels. Daily surface water quality samples will be collected in accordance with SOP D-3; Surface Water Sample Methodology. Samples will be collected approximately 3-inches below the water surface directly into clean laboratory supplied sampling bottles or with a dipper. In situations where the water cannot be reached, the sample container will be attached to an extension pole. The surface water grab samples will be analyzed immediately in the field for turbidity. The turbidity samples will be evaluated to determine the effect of in-water work on quality of the surface water in the creek. Measurements will be obtained using a portable, battery-powered multi-probe meter, such as a YSI. The methodology for field-measurement of water quality parameters is presented in SOP D-4: Field Parameter Measurements for Surface Water. Surface water samples will be identified using six elements, separated by hyphens, in the following format: sample code-sample type-sample location-sample number-date-identifier. The surface water sample label elements are described below. • Section identifier—A, B, C, D or E • Sample code—surface water (SW) • Sample location — up-gradient (UG), downgradient (DG), work zone, (WZ) • Sample date (mm/dd/yyyy) • Sample number—first, second, third, etc. (start over each day) AMEC Earth & Environmental, Inc. 28 Project No.: 0-61M-116854 K 111000\11600\116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 For example, "A-SW-UG-10202011-01" indicates the first surface water sample, collected at the up-gradient sampling station in sediment removal section A on October 20, 2011. 4.4.2 Sediment Confirmation Sampling Sediment confirmation sampling will be performed to evaluate the effectiveness of the removal action and to confirm that contaminated sediments have not migrated downgradient from the removal action area. Sediment confirmation samples will be collected from the 19 proposed sampling locations along the creek (Figures 3 and 4), after the sediment removal activities are complete. Confirmation samples generally will be collected from the proposed removal areas: (1) at the up- gradient removal extent; (2) at the down-gradient removal extent; and (3) at approximately 20 foot intervals along the center of the removal area. For removal Sections A and B, which are each approximately 25 feet in length, samples will be collected: (1) the up-gradient removal extent; (2) the down-gradient removal extent; and (3) the approximate center of the removal area. For the two removal areas less than 20 feet in length (i.e. Sections D and F) confirmation areas will only be collected from the up-gradient and down-gradient removal extents. Sediment confirmation samples will be collected and handled using discrete grab sampling methodology described in SOP D-1. Sediment confirmation samples will be collected using a hand auger from the upper 6-inches of the exposed sediment surface. Each subsample will be extracted from the hand auger and directly in the appropriate laboratory-supplied container. The sediment confirmation samples will be submitted for the following analyses: • Total lead and zinc by United States Environmental Protection Agency (EPA) 6000/7000 Series methods. • PCBs as Aroclors by EPA Method 8082. Sample locations will be recorded using sample location maps with previously designated sampling locations and a global position system (GPS) receiver, as necessary. Sediment confirmation samples will be identified using four elements, separated by hyphens, in the following format: sample code —sample number-identifier. The sediment confirmation sample label elements are described below. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 29 K:111000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property-Front Parcel, Tigard, Oregon amec49 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Sample code-sediment confirmation (SC) • Sample number-three digits (001) • Removal section -A, B, C, D, or E • Identifier- Primary (01), or duplicate (02). For example, "SC-002-B-02" indicates a duplicate sediment confirmation sample, the second sample collected and it was collected from sediment removal Section B. 4.4.3 Soil Confirmation Sampling Soil confirmation sampling will be collected and handled the same way as the sediment confirmation samples, described in Section 4.4.2. The 10 proposed soil confirmation samples will be collected from the locations shown on Figure 5. Based on the previous Upland soil IRAM soil removal activities and soil sample data, one sample confirmation sample each will be collected from Sections1 BB and 2A (Figure 5). The COCs for these two removal areas are PCBs. The basis for the proposed extent of these soil removal areas and the rationale for the confirmation samples locations are outlined in the Uplands Shallow Soil Removal IRAM Work Plan Addendum (AMEC, 2011d). Soil confirmation samples collected from Sectionsl BB and 2A will be analyzed for PCBs by EPA 8082. Four confirmation samples will be collected from the midpoints of the four excavations walls of the rectangular Section 3 soil removal area. The Section 3 soil removal will address the elevated concentrations of PCBs detected in previous sample AB-43 and arsenic detected in previous shallow soil samples (Appendix A, Figures 5 and 8). Soil confirmation samples collected from Section 3 will be analyzed for PCBs by EPA 8082 and total arsenic by EPA 6000 series methods. Two confirmation samples will be collected from the northern excavation wall of the Section 4 soil removal area. Section 4 soil confirmation samples will address the elevated concentrations of PCBs detected in previous shallow soil samples AB-35 and AB-36 (Appendix A, Figure 8). Soil confirmation samples collected from Section 4 will be analyzed for PCBs by EPA 8082. Two confirmation samples will be collected from the midpoints of the northern and southern excavation walls of the Section 5 soil removal area. Section 5 soil confirmation samples will address the elevated concentrations of lead detected in previous shallow soil samples AB-45 and HA-1 (Appendix A, Figure 7). Soil confirmation samples collected from Section 5 will be analyzed for total lead by EPA 6000 series methods. AMEC Earth & Environmental, Inc. 30 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ameel 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Soil confirmation samples will be identified using four elements, separated by hyphens, in the following format: sample code—sample number-identifier. The sediment confirmation sample label elements are described below. • Sample code—Soil Confirmation (OS) • Sample number—three digits (001) • Removal Section — 1BB, 2A, 3, 4 • Identifier— Primary (01), duplicate (02), or equipment blank (03) For example, "OS-002-2A-02" indicates a duplicate soil confirmation sample, the second sample collected from soil removal Section 2A. 4.4.4 Material Management Site activities will generate two general types of material: dewatered sediment, and treated water. Sampling of the material generated during the primary tasks at the site will provide data to determine the appropriate management methods. Management of each type of media generated at the Site is briefly discussed below. Dewatered Sediment Sediment will be generated from removal activities along the creek. Sub-samples of the dewatered sediment will be collected from each of the dewatering boxes, following the procedure outlined in Appendix D, SOP D-5. The subsamples will be homogenized into one composite sample and the composite sample will be submitted for the following analyses to determine the waste disposition: • Total arsenic, chromium, and lead by United States Environmental Protection Agency (EPA) 6000/7000 Series methods. • Leachable arsenic, chromium, and lead by TCLP Extraction, EPA 1311. • PCBs as Aroclors by EPA Method 8082. In general, a hand auger will be used to collect grab subsamples from 0 to 6-inches below the surface from two locations in each box. The hand auger will be decontaminated between each sample to prevent cross-contamination. The dewatered sediment sample will be identified using three elements, separated by hyphens, in the following format: sample code-box number-identifier. The sediment sample label elements are described below. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 31 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amec 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Sample code— Dewatered Sediment (DS) • Dewatering box number—two digits (01) • Identifier— primary (01), duplicate (02), or equipment blank (03) For example, "DS-02-01" indicates a primary dewatered treatment sample from dewatering box#2. Treated Water Water is anticipated to be generated from sediment dewatering activities, and potentially from vehicle decontamination prior to demobilization from the Site. In general, equipment decontamination will be completed by wiping the surface (dry decon) using moist towels. After completing a dry decon, the equipment surfaces will be inspected to determine if additional washing or flushing the surface is needed. If necessary, plastic sheeting (6-mil.) will be placed on the ground below the equipment and the sides of sheeting will be wrapped over wattles to create a containment berm. The decontamination water will be collected within the plastic sheeting and will be transferred to the untreated water storage tank and treated along with the water generated from the sediment dewatering activities. A sample will be collected from the treated water storage tank located within the sediment staging area (Section 4.2.1), and analyzed for the following constituents: • Total lead and zinc by United States Environmental Protection Agency (EPA) 6000/7000 Series methods. • PCBs as Aroclors by EPA Method 8082. • Total petroleum hydrocarbons (TPH) by NWTPH-Gx and NWPTH-Dx, if wash water generated by vehicle decontamination is added to the on-Site post-dewatering treatment system. • Additional constituents, if required by the City of Tigard, for disposal in the City sanitary sewer. Batches of treated water derived from vehicle decontamination will additionally be analyzed for total petroleum hydrocarbons (TPH). Grab samples will be collected from the bottom ball valve on the 6,500 gallon treated water storage tank for each 5,000 gallon batch of treated water in accordance with Appendix C, SOP D-6: Water Grab Sample Methodology. Treated water samples will be identified using three elements, separated by hyphens, in the following format: sample code-batch number-identifier. The treated water sample label elements are described below. AMEC Earth & Environmental, Inc. 32 Project No.: 0-61M-116854 K111000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amed9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Sample code—surface water treatment(TW) • Batch number—two digits (01) • Identifier—primary (01), duplicate (02), or equipment blank(03) For example, "TW-01-02" indicates a duplicate treated water sample collected from batch#2. 4.4.5 General Sample Handling Samples will be collected in the appropriate laboratory-supplied soil containers, as specified in Table 4.4.5 below, and transferred to the analytical laboratory under chain-of-custody procedures. Table 4.4.5: Sample Container and Preservation Requirements Sample Minimum Holding Analyte Media Container Sample Preservation Time Size Turbidity Surface Water HDPE bottle 250 mL n/a Analyze in the field Sediment, Soil, Total Metals Dewatered 8 oz.glass jarl 20 grams chill to<6°C 6 months Sediment TCLP Metals Dewatered 8 oz. glass jarl 110 grams chill to<6°C 6 months Sediment Sediment, Soil, PCBs Dewatered 8 oz. glass jarl 20 grams chill to<6°C 14 days Sediment Treated Water 1 L amber glass PCBs from sediment bottle 1,000 mL chill to<6°C 7 days de-watering Treated Water 250 mL plastic HNO3, chill to Total Metals from sediment HDPE bottle 175 mL <6°C 6 months de-watering TPH-gasoline Treated Water 3 40 mL VOA HCI,chill to (if necessary) from Vehicle vials 40 mL <6°C 14 days Decontamination 7 days to TPH-diesel Treated Water extraction,40 and motor oil from Vehicle 2—1 L amber 1,000 mL Chill to<6°C days from (if necessary) Decontamination glass bottles extraction to analysis 1 Multiple analyses may be taken from the same container as long as they are analyzed by the same lab and there is sufficient sample mass. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 33 K:\11000511600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 Sample containers will be filled taking care to prevent sediment or soil from remaining in the lid threads prior to being closed in order to prevent potential contaminant migration to or from the sample. Sample containers will be closed as soon as they are filled, labeled, and placed immediately in a chilled sample cooler. All samples will be documented on a chain-of-custody. At the end of sample collection activities, a complete chain-of-custody form will be placed into a sealable plastic bag and taped to the inside top lid of the cooler. The sampling crew will maintain custody of samples until they are delivered to the laboratory. In addition to laboratory analyses, AMEC personnel will monitor surface water parameters in the field. 4.4.6 Field Quality Control Samples Evaluation of field sampling procedures requires the collection and evaluation of field quality control (QC) samples. The following field QC samples will be collected for this project. • Field Duplicate Samples - Field duplicates will be collected and submitted to the laboratory to provide a means of assessing the sampling precision. Field duplicate samples will be collected at the rate of one duplicate per twenty samples, with a minimum of one sample for soil and one for sediment. • Equipment Blank Samples - Equipment blank samples will be collected and submitted to the laboratory to provide a means to determine sample contamination caused by sampling equipment. Equipment blanks will be collected daily for non-dedicated sampling equipment. 4.4.7 Decontamination Procedures Decontamination of sampling equipment will be conducted consistently to ensure the quality of samples collected. All equipment that comes into contact with potentially contaminated soil, sediment, or water will be decontaminated. Disposable equipment (e.g. disposable auger liner) intended for one time use will not be decontaminated, but will be packaged for appropriate disposal. Decontamination will occur prior to and after each use of a piece of equipment. All sampling devices used will be decontaminated in accordance with SOP D-2, which adheres to the EPA Region 9 recommended procedures. 4.5 PHASE 5: SITE RESTORATION Restoration of the any areas along the creek where vegetation was removed, and each of the excavation areas will be performed after the removal action is complete and the confirmation samples indicate the areas do not have any COCs remaining above the screening levels. AMEC Earth & Environmental, Inc. 34 Project No.: 0-61M-116854 K:\11000\116001116851116854 Front Parcel\Tract B\Removal Mork Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amed9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 4.5.1 Creek Bank In general, the slope areas will not be altered during the sediment removal activities and will be maintained at their current grade. The existing slopes are generally not steeper than 2:1 (horizontal to vertical). In areas where it is evident that significant erosion could cause future vegetation and additional soil loss, the bank will be repaired to match the adjacent bank conditions. Jute matting will be placed along the top of the creek to approximately 1-foot below the top of the bank, to ensure that soil erosion does not occur during the period of re-vegetation. Hydroseed will be applied over top of the jute matting as described below in Section 4.5.4. 4.5.2 Upland Soil Excavation Areas The upland soil excavation areas will be restored to pre-excavation topography by placing 12- inches of clean 1/4" inch minus backfill over the sub-surface soil and compacted the clean surface fill to 85% relative dry density, across the site. Backfill placement will follow the existing established topography, thus minimizing changes to the creek from current state except in areas of the proposed transportation routes, where the backfill placement will be leveled to facilitate equipment movement along the route. 4.5.3 Removal of Staging Area The sediment staging area will be dismantled once all the sediment has been transported from the area. All equipment and materials will be removed from the staging area and the areas will be returned to pre-mobilization condition to the extent reasonably practicable. Any exposed soil will be covered with hydroseed, as described in Section 4.5.4 below. 4.5.4 Re-vegetation A native riparian seed mix will be used in areas along the creek where bare ground was exposed from vegetation removal. Grass cover is expected to be established before the rainy season and wet weather begins. Specifications seed mix include the following riparian/stream bank mixture: • 50% Native Red Fescue (Festuca rubra); • 20% California Brome (Bromus carinatus); • 20% Blue Wildry (Elymus glaucus); and • 10% Large leaf Lupine (Lupinus polyphillis). The seed will be applied at a rate of 2 pounds per 1,000 square feet along the areas along the creek bank where turf or vegetation removal occurred. In order to provide good seed-soil contact, the seed will be incorporated into the soil by raking or chain dragging, and then lightly compacted. _ AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 35 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 4.5.5 Final Site Survey A survey will be conducted to gather the final excavation limits and grades along the top of the bank, at the water-sediment interface and along the creek and within the soil excavation areas. The confirmation sampling locations will be surveyed by AMEC personnel during the remedial activities to define their locations for future reference. If necessary, a benchmark will be established at the property, and will be tied to the National Geodetic Vertical Datum. All positions and coordinates of the permanent points within the Site's control transverse will be shown. Horizontal accuracy will be ±0.1 feet and a vertical accuracy will be 0.01 feet for benchmarks. Soil and sediment confirmation locations will be surveyed to the nearest 1.0 foot horizontally and the nearest 0.5 feet vertically. All the data generated will be presented graphically in the final construction summary report. 4.6 PHASE 6: MATERIAL MANAGEMENT As part of the removal action activities, material will be generated that will require specific handling procedures and management practices. This section details the procedures and practices that AMEC will follow to handle each material generated. Manifesting (or Bills of Lading), management, transportation, and disposal of any material that is not reusable will also be coordinated by AMEC. 4.6.1 Sediment and Soil Management Sediment and soil samples will be collected, as described in Section 4.4 above. Based on prior analytical data collected from the Site, it is anticipated that all removed soil or sediment will be transported off-site to the permitted Subtitle D facility located in Hillsboro, Oregon. If subsequent sampling identifies soil or sediment that would qualify as characteristic hazardous waste (Table 3.1.2), these removed soil and/or sediments would be transported to a permitted Subtitle C facility (e.g. Waste Management- Arlington, Oregon).. For all sediment transported off-Site, a sample of sediment will be placed in a sample container and shaken to determine if any free liquid is present. If no free liquid is observed the sediment will be transported. If water accumulates in the sample, sawdust will be added to decrease the water content in the container before the material is transported off-site. 4.6.2 Decontamination Water Management In general, wash water generated from field activities will be collected and treated through the dewatering filtration system (Section 4.2.1). The collected water will be pumped into the 6,500- gallon poly batch tank, where solids will be allowed to settle out. The water will be pumped from the frac tank through a particulate bag filter and then through GAC and into a 6,500-gallon poly AMEC Earth & Environmental, Inc. 36 Project No.: 0-61M-116854 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 batch tank. A water grab sample will be collected using a dipper from the batch tank. The sample will be analyzed for site-specific metals (arsenic, chromium, and lead), PCBs, and any additional constituents, if required, by the City of Tigard for disposal in the City's sanitary sewer system. The treated water will be discharged through a batch discharge permit into the City of Tigard sanitary water system, or used for dust suppression, if needed. At the conclusion of the on-site work, the GAC vessels will be characterized for disposal, as indicated in Section 4.6.4 below. 4.6.3 Other Waste Management Personal protective equipment (PPE) will be containerized in a household-type trash bag and may be disposed of in an on-site trash receptacle/dumpster. 4.6.4 Material Profiling, Transportation, and Disposal All material produced during the removal action that requires off-site management will be recorded on a field form and shall include the following information: • Material container identification number or soil stockpile number: • Type of material • Volume of material • Date generated • Source of material • Reference to available analytical data Prior to excavation, transportation, and disposal of contaminated soil, the Contractor must obtain acceptance from the landfill for disposal of the contaminated soil. AMEC will characterize the sediment and soil, based on analytical data generated from the previous investigations and any additional characterization samples collected and will provide a profile to the disposal facility. A composite sample, comprised of a GAC sample from the spent GAC vessels will be collected at the conclusion of the project. The GAC sample will be submitted to the GAC vendor for analysis and profiling. Once profiled, the vendor will remove the GAC for regeneration and re-use. If any of the waste is characterized as hazardous, manifests will be prepared and signed by the client representative, before any material is removed from the property. Once the staged sediment has been sufficiently dewatered in the roll-off boxes and the treated soil has been staged, it will be loaded onto trucks for transportation to an off-site, permitted facility for disposal. Before leaving the Site property, each transport vehicle will be decontaminated and all loads will be covered. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 37 K\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 The following regulations will be regarded for waste transportation and disposal: • LDRs: Materials characterized as hazardous must be treated to specified concentrations before placement in a land-based unit (40 CFR Part 268). LDRs would apply to any material failing TCLP analysis. • Standards Applicable to Transporters of Hazardous Materials: The provisions of 40 CFR Part 263 and OAR Chapter 340, Division 103, establish minimum standards that apply to persons transporting hazardous materials by air or water, if the transportation required a manifest as specified in Division 102. The standards will apply to those elements of the Remedial Action involving off-site transportation of hazardous materials for treatment and disposal. • U.S. Department of Transportation (DOT) Hazardous Materials Regulations: The DOT has published regulations that govern the transportation of hazardous materials, including communications and emergency response requirements, shipping, and packaging requirements (40 CFR Parts 171 through 180). These DOT requirements will apply to hazardous materials that are transported off-site. • Oregon Solid Waste Regulations: Contaminated soil or treatment residue that is not a hazardous material defined by ORS 466.005 will fit the definition of"cleanup materials contaminated by hazardous substances" and would; therefore, be considered a solid under OAR 340-093-0170. Such materials may be treated or transported to an off- site to solid waste landfill or treatment facility authorized to accept such materials. Non-hazardous material will be transported to Waste Management's Subtitle D landfill located in Hillsboro. The soil transportation contractor will obtain all required permits and furnish all labor, materials, equipment, and incidentals required for soil transport. 5.0 REPORTING Following completion of the removal action, a Removal Action Report summarizing and documenting all field activities will be prepared and submitted to DEQ. The report will also include a Residual Risk Assessment which will evaluate the levels of residual risk to human and ecological receptors on the site based on remaining COC concentrations in upland soil and sediment. The Removal Action Report will include: • Documentation of excavation, sampling, backfilling, and disposal activities. • Documentation of engineering controls and implemented at the Site and turbidity monitoring results. • Documentation of post-removal restoration activities. • Figures delineating soil and sediment removal areas. AMEC Earth & Environmental, Inc. 38 Project No.: 0-61M-116854 K:111000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amees' 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 • Analytical laboratory reports and data tables containing delineation and confirmation sample results. • A Residual Risk Assessment consisting of: (1) comparison of COC concentrations in samples representative of soils and sediment remaining on the Site to applicable human health and ecological risk-based concentrations; and (2) an evaluation and discussion of potential direct toxicity and bioaccumulation risk posed by remaining concentrations of Site COCs. • If the Residual Risk Assessment demonstrates that post-Removal COC concentrations are protective of human health and the ecological receptors, a request for regulatory closure from DEQ will be made. • If unacceptable residual risk is identified, recommendations for additional actions to bring the Site to closure will be made (i.e., additional delineation sampling and removal activities, and/or Focused Feasibility Study to identify a final site remedy). 6.0 SCHEDULE ODFW has granted an extension of the in-water work window through November 30, 2011. Due to anticipated high flow volumes in Redrock Creek from stormwater during the rainy season, AMEC will endeavor to complete the removal activities as soon as is practicable after final approvals are received from DEQ and the other permitting agencies. The removal work is anticipated to be completed in two to three days on the Site. Samples will be submitted to the laboratory with a standard turnaround time of 10 business days following completion of sampling. The Removal Action Report summarizing the results will be submitted approximately 3 weeks following receipt of the final laboratory data. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 39 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon ameel 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 REFERENCES AMEC Earth & Environmental (AMEC), 2008. Sampling and Analysis Plan, Former COE Manufacturing Facility, DEQ ECSI 0983, 7930 SW Hunziker Road, Tigard, Oregon, prepared for COE Newnes McGehee, May 7, 2008. ----, 2009a. Site Investigation Summary Report, Coe Manufacturing Property - Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, prepared for RealNet Investments, LLC, October 19, 2009. - 2009b. Letter to Chuck Harman (DEQ), Re: Request for No Further Action Determination, Former Coe Manufacturing Property, Tax Lots 2S101CA00500 and 2S101CA00600, 7930 SW Hunziker Road, Tigard, Oregon, DEQ ECSI File#398, prepared for RealNet Investments, LLC, November 4, 2009. ----, 2010a. Level II Ecological Risk Screening, Coe Manufacturing Property - Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File #983, prepared for RealNet Investments, LLC, June 15, 2010. - 2010b. Human Health Risk-based Concentration Exceedances Summary, Coe Manufacturing Property- Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File #983, prepared for RealNet Investments, LLC, June 18, 2010. ----, 2010c. Sampling and Analysis Plan Addendum, Coe Manufacturing Property- Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, prepared for RealNet Investments, LLC, October 7, 2010. ----, 2010d. Uplands Remedial Investigation Supplement, Coe Manufacturing Property- Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, prepared for RealNet Investments, LLC, November 12, 2010. ----, 2011a, Letter to Charles Harman (DEQ), Re: Non-Lead Metals in Uplands Shallow Soil, Coe Manufacturing Property - Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ECSI 983, prepared on behalf of RealNet Investments, LLC, February 7, 2011. 2011b, Uplands Shallow Soil Removal IRAM Work Plan, Former Coe Manufacturing Property- Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ECSI 983, prepared for RealNet Investments, LLC, March 17, 2011. AMEC Earth & Environmental, Inc. 40 Project No.: 0-61M-116854 K\11000111600111685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon amed9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 ----, 2011c, Remedial Investigation Work Plan, Former Coe Manufacturing Property—Tract B, 7930 SW Hunziker Road, Tigard, Oregon, ECSI 983, prepared for RealNet Investments, LLC, April 25, 2011. ----, 2011d, Uplands Shallow Soil Removal TRAM Work Plan Addendum, Former Coe Manufacturing Property - Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ECSI 983, prepared for RealNet Investments, LLC, May 31, 2011. ----, 2011e, Letter to Charles Harman (DEQ) Re: Response to DEQ Comments on Remedial Investigation Work Plan, Former Coe Manufacturing Property—Tract B, 7930 SW Hunziker Road, Tigard, Oregon, ECSI 983, June 10, 2011. Bonn, B.A., 1999. Selected Elements and Organic Chemicals in Bed Sediment and Fish Tissue of the Tualatin River Basin, Oregon, 1992 96, Water Resources Investigations Report 99 4107, U.S. Geological Survey, Portland, Oregon. Oregon Department of Environmental Quality (DEQ), 2001. Guidance for Ecological Risk Assessment. Waste Management & Cleanup Division, Cleanup Policy & Program Development Section. December 1998 (updated December 2001). ---- 2007. Guidance for Assessing Bioaccumulative Chemicals of Concern in Sediment. January 31, 2007 (Updated April 3, 2007). ----2009a. Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites; Land Quality Division, Environmental Cleanup and Tanks Program, September 2003, revised September 15, 2009. - -, 2009b. Letter from Chuck Harman to Jarvis Brecker (RealNet), Re: No Further Action Determination —Tax Lots 2S101CA00500 and 2S101CA00600, Former Coe Manufacturing Property , 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, December 9, 2009. ----, 2010. Letter from Chuck Harman to Arthur Johnstone, Re: Partial No Further Action Determination, Coe Manufacturing Property— Front Parcel, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, December 7, 2010. ----, 2011a. Letter from Chuck Harman to Arthur Johnstone, Re: Review and Feedback on Remedial Investigation Work Plan, Coe Manufacturing Property—Tract B, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, May 27, 2011. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 41 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property—Front Parcel, Tigard, Oregon amee9 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 - 2011b. Letter from Chuck Harman to Arthur Johnstone, Re: Redrock Creek Sediment Removal Action, Coe Manufacturing Property—Tract B, 7930 SW Hunziker Road, Tigard, Oregon, ESCI File#983, September 2, 2011. ----, 2011c. Revising the Water Quality Standard for Turbidity: Draft Issue Paper. March 4, 2011. DEQ and the United Stated Environmental Protection Agency (EPA), 2007. Portland Harbor Joint Source Control Strategy. Published December 2005. Table 3-1, Revised July 17, 2007. Smith SL, MacDonald DD, Keenleyside, KA, Ingersoll CG, and Field J. 1996. A preliminary evaluation of sediment quality assessment values for freshwater ecosystems. JGreat Lakes Res 22:624-638. Washington Department of Ecology (Ecology), 1994. Natural Background Soil Metals Concentrations in Washington State. Publication# 94-115. October 1994. AMEC Earth & Environmental, Inc. 42 Project No.: 0-61M-116854 K:\110001116001116851116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc Removal Action Work Plan Former Coe Manufacturing Property— Front Parcel, Tigard, Oregon ame0 7930 SW Hunziker Road, Tigard, Oregon ECSI 983 LIMITATIONS This work plan was prepared exclusively for RealNet Investments, LLC by AMEC Earth & Environmental, Inc (AMEC). The quality of information, conclusions, and estimates contained herein is consistent with the level of effort involved in AMEC services and based on: i) information available at the time of preparation, ii) data supplied by outside sources, and iii) the assumptions, conditions, and qualifications set forth in this report. This Removal Action Work Plan is intended to be used by RealNet Investments, LLC for Tract B and the Front Parcel Uplands of the Former Coe Manufacturing Property (tax lots 2S101CA00400 and 2S101CA00700) located at 7930 SW Hunziker Road, Tigard Oregon, only, subject to the terms and conditions of its contract with AMEC. Any other use of, or reliance on, this work plan by any third party is at that party's sole risk. The findings contained herein are relevant to the dates of the AMEC Site visit and should not be relied upon to represent conditions at later dates. In the event that changes in the nature, usage, or layout of the property or nearby properties are made, the conclusions and recommendations contained in this report may not be valid. If additional information becomes available, it should be provided to AMEC so the original conclusions and recommendations can be modified as necessary. AMEC Earth & Environmental, Inc. Project No.: 0-61M-116854 43 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Work Plan\Final Removal Action WP.Doc ame FIGURES 1 ca m g , N ` Green `Q , N., 3ske a it s. Y gr jt Greton � �..-� 3 I Portlat 1217 --,.. Leis& Commu Park College Sy b +O.F a 9 r r SITE ._ f:l h _ Fj 141 ; �. __.\ ` n, 4: 21' .r ri'utd s - I. 4, I :::..... _ 2.2... ,-,....,...). 2 , k �� ... ,-rte -= SW McDonafti St 1 f \lit, - Xruse Way Bonita ft- "r I' u ; SW?cen.ta Rd -t-it- c,. (P SW Sather S! Z S w x >t z y 7ra4,a-"' I s Sumrxrrtir GaP1 a'- .''c ;'r,Club 0 1,000 2,000 4,000 0 �—� — Feet CLIENT AMEC Earth & Environmental REALNET 7376 SW Durham Road ec INVESTMENTS, LLC Portland,OR,U.S A 97224 am 1 TITLE. SITE LOCATION MAP DWN BY. DATUM. DATE SD NAD83 SEPTEMBER 2011 PROJECT REMOVAL ACTION CHK'D BY REV.NO.: PROJECT NO JE 0-61M-11685-4 FORMER COE MANUFACTURING FACILITY- FRONT PARCEL PROJECTION SCALE FIGURE No' 7930 SW HUNZIKER ROAD, TIGARD, OREGON ORSPN Ft C inch=2,000 feet FIGURE 1 K\11000\116001116&5\116851\DN.G1Frant Parcel Maps\Tract B Removal\Work_Plan\Figure 1-Site Location Map mxd / , 4iir -...___7 IWig..- , ' -.,_-- ---,... ...--- ...• : . . . : ,, . . '''' . ..,, . , i . .. i , '''''":' i •;;i1-',4Zif , _ 1... ,..:. ,,!- , t 7 1 i f :r w., ,. F �k r-_ / t - `. E-32 p F ,, 1t a . t • t tI- I J .s, ':. I w F is 4.d s ,,, , a Figur=Q ;' ♦ - I —. ' , 0 i. .,r_.'. ' :"..,.,-.:-.,__tc 4 t t-. - - Fig3 i • - 1 'I-. ♦ " 2S 101CA00700 I (Tract B) _ t I a 2S101CA00600 / 11 1 , i . ' . Y ■7 Former Hazardous ? .— Figure 5 r Waste/Petroleum - " � Storage Area I [.......daft I: Ti 2S101CA00500 - ,, Compressor Shed ;� Building#1 z a _ / ;, �'25101 CA00400' Offices /• (Front Parcel) r ,..;,...,1)-i, F ! SW-Wall-St. /� LEGEND: l ---• Redrock Creek t City of Tigard Local Wetlands Inventory t t;) t , l .4.;',z � . Significant Wetland 1 n Site Boundary 0 . 50 100 I Taxlot Boundary t; *°•'' =� *� Feet— NO Taxlots and Wetlands 29 aerial imagery from t .et City gl Tigard. Metro Data Resource Center . CLIENT: �� SD PROJECT. REMOVAL ACTION DATE.SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHKD BY: FORMER COE MANUFACTURING FACILITY-FRONT PARCEL PROJECT NO — JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM: NAD83 TITLE REV.NO.: AMEC Earth & Environmental PROJECTION: 11810 North Creek Parkway N OR SP North,Ft. PROJECT SITE OVERVIEW FIGURENO'. Bothell,WA 98011 ame SCALE: 1 inch=100 feet FIGURE 26 K\11000111600111685\116851\DWG\Front Parcel Maps\Tract B Removal\Work_Plan\Figure 2-Project Site Overview mxd ....."W ' SMWN ■■•••■■=7, AmiMmmn . . , ,, ., 777. 1 ...., / . A1 ", .r,' "., LEGEND: , „..._. 4 I- - • :..;. : • Approximate Manhole Location Approximate Location of Turbidity Curtain 0 Proposed Confirmation Sediment Sample Location / „. I'..-- --—-. .. „ , , r -- --- -- ' - -- • Approximate Storm Sewer Outfall Location Area of Limited Vegetation Removal 1=1 Turbidity Monitoring Location -.: ,. . I .-,- , for Creek Access and Restoration , --- Approximate Culvert Line C3 Proposed Sediment Removal Area iiillit iir f'-'-'- , , .. . . . .... ..-. . . ---- Proposed Transportation Route ..., ' . Approximate Storm Sewer Line Sheetpile Check Dam* 'Ailler • ,..,, L I Taxlot Boundary (see Detail D-3) l'', '.ir 'LI , , I-1 Tract B(Taxlot 2S101CA-700) t Station Designation(25ft.Interval) . ' . (see Detail D-5) :,: .. -...:,:i:: .., ' . , 1 - ,., _ : ...ip t.., , .•-:gi..-:',f'..;,,R.: , , , -_, ,, .:. .,-, -, .,. - ..... .. -4_2, .'- ' -'-":,- -.... = - -„. - ' • . : *4 '', _,•-,-,i,14-,-t:f,,-..,,,i4- -,,,:::-,;:, , _ ,-, .- , ,„: AP: 44,!-"'-.--;1 -,-14 ;;,* ,: '1!--:- 4i, , - .: ,r --- ' - ''-' ' -: '---- ''''', .- „„- .- . - . ..„,,,.. . . . . . . .,:. , . .. . . _ „,... .. . .•.., . ..,. . , , - 14 A...■ 1.. ,' ..,44 .,, ,. , ■ - V,4,:,,,, ,;4..74,, .r..,,, ..-■-.„, ”. ,,.. 7 . , - - - „„,,.. ...„...... ....._ I . . , •„ + . 5.. 4.' .. ,.., , • 1 ■ , , ■ ki‘4: .. .. . ::;, •'',.' , .., . ....,, 'Section B Downstream Turbidity Curtain - '-'-':-'-- Section ADOWnStreaM Turbidity Curtain ii.., ,-c- 7ISection B Upstream Turbidity Curtain.] Section A ., 1 . ._ n” 11--1------ - , 0 e 0 - _ , .. , ... . .. .. .. . _ ,.- . - - . , . ..... Section B - E i frr _. , ,, t ,- - • .. , . t . • -,E3:..e.3,- .--o„4, , . , . . : ,,. ,,,, , ' ' -- ' --. --- --. tit ' ''". ,•. .., — 4 0 125 25 37 5 , . ' . rillig.' ■ MMIMII Feet NOTE.Taxlots and 2009 aerial Imagery from ftp.metro-reglon.org-Metro Data Resource Center. CLIENT. DWN B : PROJECT: DATE *Bypass pumping may be used to transfer streamflow to below work area SD REMOVAL ACTION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHKD BY: FORMER COE MANUFACTURING FACILITY- FRONT PARCEL PROJECT NO: JE 7930 SW HUNZIKER ROAD,TIGARD, OREGON 0-61M-11685-4 DATUM . NAD83 TITLE: REV NO.: AMEC Earth & Environmental PROJECTION PROPOSED SEDIMENT REMOVAL AREAS Bothell,WA 98011 11810 North Creek Parkway N am SCA e OR SP North,Ft. OVERVIEW SECTIONS A-B FIGURE NO.' LE: 1 inch=25 feet FIGURE 3 K:111000111600111685\1168511DWG1Front Parcel Maps\Tract B Removal\Work_PlanTigure 3-Proposed Sediment Removal Areas Sections A-B mxd Downstream Secondary Turbidity Curtain LEGEND: E-32 • Approximate Storm Sewer Outfall Location ® Proposed Confirmation Sediment Sample Location Section F Downstream Turbidity Curtain - - 100 Year Flood Plain ❑ Turbidity Monitoring Location see Detail D-4 . 4 Section F Approximate Storm Sewer Line •—•- Approximate Fence Location ► Approximate Storm Water Flow Direction -1-4-F Approximate Location of Turbidity Curtain ts.:° City of Tigard Local Wetlands Inventory Area of Limited Vegetation Removal Significant Wetland for Creek Access and Restoration Taxlot Boundary t-t--+- Matting G '11 n Tract B(Taxlot 2S101CA-700) ---- Proposed Transportation Route Section E Upstream Turbidity Curtain o+oo .. �� Station Designation(25ft.Interval) g (see Detail D-5) "i 0 , Proposed Equipment Staging Area i Section E t + 0 c:3 Proposed Sediment Removal Area I .� Section D— -, r s - Section C Downstream Turbidity Curtain f I f I �� - PI . I I • < • f f i ./oyy f 0 .` ``- ���` qo Section C Upstream Turbidity Curtain 0 Section C --------- `. 8'x 23'Sediment Dewatering Box --0--o T-.. ::E:------------ - --- i Cross Section A A• + - • see Detail D-1 _�__Untreated Water Storage Tank ..- • - (6,500-gallon FRAC Tank) - - ..... 55-gallon GAC Filter - . ; \..)1 . .. .......—---------------7----------- --------------- -------......-::sia.... Treated Water Storage Tank (6,500-gallon FRAC Tank) . . / \ II' -- 0 12 5 25 37.5 I' ■ ... .... ....i , Feet NOTE Taxlots and 2009 aerial imagery from ftp.metro-region.org-Metro Data Resource Center. CLIENT: •n BY: PROJECT: REMOVAL ACTION GATE. SD SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHKD EY. FORMER COE MANUFACTURING FACILITY-FRONT PARCEL PROJECT NO — JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM. NAD83 TITLE REV.NO.: AMEC Earth & Environmental PROJECTION: PROPOSED SEDIMENT REMOVAL AREAS - 11810 North Creek Parkway N OR SP North,Ft. OVERVIEW SECTIONS C-D-E-F FIGURE NO: Bothell,WA 98011 SCALE: 1 inch=25 feet FIGURE 4 K:\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Work_Plan\Figure 4-Proposed Sediment Removal Areas Sections C-D-E-F.mxd -, r + f it LEGEND: ■ • Approximate Storm Sewer Outfall Location 0 Proposed Confirmation Soil Sample Location - - 100 Year Flood Plain --- . • •- Approximate Fence Location '.., ` Approximate Storm Sewer Line \ o}co t ,.- Approximate Storm Water Flow Direction B° . A Area of Limited Vegetation Removal 4 i for Creek Access and Restoration \ ��� _ ... ~� '`-' . c1 Section-3 0 i -_ ---- Proposed Transportation Route ``--..._ 11.-4111.111 - Section 4 i •� Proposed Shallow Soil Removal Area •---- -.......... B + `�� OHO Section 5 Taxlot Boundary ``- Cross Section B --- � ......� r__--• n Tract B(Taxlot 2S101CA-700) see Detail D-2 4. -�_. ........... ........................— .....—...... .3tw. L . \ \ ; Section 2A }, / 111111 -- um 0 ii 47,11 %.2 \ -','',----- - - ' ., -,-,,,,00,404;,00r,-,,,ftm,Aq- -' -- -- t / \ \ Y Ill -.. ift ■ ftlftftlfti --- °a 4am: ....\ \ 0,-\ \ \ 0 Section-1BB \ C) ftft -- \ . \ \ 0 12.5 25 37.5 . . • _ — Feet 1 ■ ■ i NOTE Taxtots and 2009 aerial imagery from ftp.metro-reglon.org-Metro Data Resource Center. CLIENT: —OWN 9Y. PROJECT. DATE: SD REMOVAL ACTION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY-FRONT PARCEL PROJECT NO: JE 7930 SW HUNZIKER ROAD,TIGARD, OREGON 0-61M-11685-4 DATUM: NAD83 TITLE REV NO.: AMEC Earth & Environmental PROJECTION - 11810 North Creek Parkway N OR SP North,Ft. PROPOSED SHALLOW SOIL REMOVAL AREAS FIGURE NO Bothell,WA 98011 ��� SCALE 1 inch=25 feet I FIGURE 5 K.11100011160011168511168511 DWG 1Front Parcel Maps\Tract B Removal\Work_Plan\Figure 5-Proposed Shallow Soil Removal Areas mxd TYPICAL SECTION DIRECTION g DT .1..E�SHHEET EPRILE Th AT INLET OM w w WOODEN STAKES `' wooSTA DLET!STAKE�R TO x 0 -.. ' x 1�'+ O< O O l )\.-� ) u � � 16' MIN. 16' MIN. �w w w T � o w o o a w 3 3 w OUTER EXTENT OF [ g OXCEVATION AREA ( T�,�UER�FCH TOE/��OF z..w k'z . ,,F'' 2 w z iii 8' MIN. IS DESNAND BOTTOM I ',3 ,I. a u '- i g m¢ m ^'2 CULVERT (6' MIN.) .6 9 a* o w o 2.i s- o TOP OF EXCAVATION PLAN VIEW o o a s h g a w H o EXISTING GROUND SURFACE 1 ROADWAY DIRECTION I--1 :t:ye:toifiViIi1.otive. CHECK DAM OF I :1:1�1:1:1:1:1:l:1:1:1:I:.A. 6'COMPACTED GRAVEL PLAN VIEW 1O ( 5 ) SURFACE F STREAM ■ :I:1:1:�:�i�:1:�:1i�:�:�:n. (ASSUMED DEFIFI) X. « ACCESS ROUTE :I:I:I:t:1:1:1:1:I:1:l:�in. 6' ( .) DEPTH OF WATER WIDTH of (6' BELOW SHEEP PILE) EXCAVATION I I SECONDARY `WORK SECTION NAaiESI I 1 8'NATIVE SOIL - TURBIDITY (T�•) I � \ .,. / CURTAIN L ..J \ / 1 DOWNGRADIENT TURBIDITY CURTAIN BOTTOM OF EXCAVATION PROFILE (TOTAL EXCAVATKMI DEPTH: 1—FT.) — — — t — — --� .REDR••CREEK. I+ isoiiir SHEET PILE CHECK DAM !MIN) EIRE W PROFILE VIEW ( OFD. �lfv '�.: :. -: DOSING CULVERT •! •. �.�• DEPTH VARIES �LIMIT WATER OVAL) 3' (MIN.) I EDIMENT REMOVAL) 6'(MIN.) UNIMPACTED SOFT SEDIMENT SURFACE WATER IN DITCH I 18''MIN:•— WILL REMAIN IN PLACE IMPACTED SEDIMENT lc. BELOW 6-INCHES (REMOVE UPPER 6-INCHES) 1 PH • 4111 .1'::: '�� 2 J TRENCH TO BE A, • EXCAVATION CROSS SECTION B'-B° 1' SUMP OPTIONAL BACKFlLLED AND 0 CROSS SECTION A'-A° 0-4 TURBIDITY CURTAIN NOT TO SCALE NOT TO SCALE CHECK DAM d ' CHECK DAM COMPACTED (TYp) SECTION VIEW NOT TO SCALE SECTION VIEW O NOT TO SCALE f_MINED CM ON TO.RAIL x WOOD STAKE OVERLAP MAT 6-INCHE$ x HYDROSEED I■ - - "61..Ar"r�Tc \(IF NEEDED) I I _ 88? # Bt13 8$E 1e484P 1 43 #3E 3883E1 \ STATION MARKER (TIP.) �\. / f •' i'•* #•e•e Atli!!444 .:• • ye •e•0• 0....••• :• \ N.\ WATTLES(SEE INSET MARKER, J / ••i ••• e e e e�i•i in- ••y ••• • ••e Mg \ if � owe o.�• qa.•I•s.•,• . . e.•.e •�.�.•�• RICE COCONUT o•� ••�•�o •.•• e��P o�•.e� i•.• ee r e• -:ii:::. \ -� ^ _ ,r. TOP OF CREEK - OR EXCELSIOR •S• •e • •s ••• • •• • • • ,__,__, SLOPE e�e1•••di •: • it .i r•s• •i i• i• •r•r° •••r 'e e•., TT • — r 'ie ;I :fir •a•} •�••i ••i •iie iii •o•• ••• 2t—)�•2 —2: _H3 / 1 -~ 52 •'e 2`r•r• ; ••;r • • M STAPLE PATTERN ,. SECTION VIEW �. S • �•e•e DOOR PANEL (TYP.) .\14p,__ PLACE WATTLES ALONG SLOPE CONTOURS. t•. •�� r r ... •• !j• • • - •• •• k •+ e•o� ' „c PROFILE VIEW ,�.,. 1- -- -rw'' __ ••tee!• :2•!• •!A!i �•_ •• •• - d3 T' I- IY / _ — j �/ MDfET CL[AgJT IMTCM r '-�-�•—�•—• STATION DESIGNATION ' II' �R r STATION (WRITTEN IN INDEUBLE INK) =I1.•'—•'•'•�1� JUTE MAT& MARKER STAKING IN TALL TOP OF -II—II—II (NEEDED) SPACING 4' O.C. STING T BANK WHERE NEEDED EXISTING BANK LpN�x e•PIPE NIPPLE AND CAP +Iw1 SHEET DAENSK1NS & HYDROSEED (MAINTAIN SLOPE) REDROCK FLOW 2GUARD SfAKE�i t$'i (MIN.) — io . 9c �2 CREEK (OR EQUIVALENT) ... _. ..I . t• NOTES: ■ 1. INFORMATION PROVIDED IS MINIMUM REQUIREMENTS. ADJACE �� e I MANUFACTURES REQUIREMENTS WHICH ARE MORE STRINGENT IAAARKER �� �� WATTLES GROUND SURFACE SHALLBE USED.sT(TYP) PLAN VIEW m �E > 2 DIRE ON T PARALLEL IN CENTER OF CHANNEL IN THE `//////////////////////.4.. \\\%/////////////////_Q\\\\\\%//////////////////////J// I ∎�1✓ 3. LENGTH OF S BE DETERMINED BY SOIL TYPE - NOTE COHESIVE SOINCH, NON-COHESVE SOILS 8-12 INCH. 1.STAKING SPECIFICATIONS: t_ STATION MARKER , W .4 . • 4. HYDROSEED SHALL CONSIST OF NATIVE RIPARIAN/STREAMBANK o.Ike'W000EN STAKES INSET D-5A MIX WITH APPLICATION RATE OF 2LBS PER 1,000SF; (FEsTUCA b.ADm OVAL STAKES MAY BE INSTALLED ON DOMRWILL SIOE OF e'PIPE NIPPLE AND CAP WATTLES,ON STEEP SLOPE OR HIGHLY EROSVE SOILS NOTES.; RUBRA(50%); BROMUS CARENATUS (20X); ELYMUS GLAUCUS 1.ALL gtES SNAIL DE Cav®WEN NOT IN USE FOR A PERKD LONGER TPA 2 OAK. (20%); LUPINUS POLYPHIWS (10%)) 244 0 WATTLES(IF NECESSARY)&STATION MARKER(INSET) DEWATERING BOX(TYP.) JUTE MAT DETAIL NOT TO SCALE NOT TO SCALE NOT TO SCALE CLIENT: DWN BY: PROJECT: DATE: SD REMOVAL ACTION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY: FORMER COE MANUFACTURING FACILITY- FRONT PARCEL PROJECT NO: HN 7930 SW HUNZIKER ROAD,TIGARD, OREGON 0-61M-116854 DATUM: N/A TITLE: REV.NO.: AMEC Earth & Environmental ame0 PROJECTION: 1 7376 S.W.Durham Road N/A REMOVAL ACTION DETAILS FIGURE No. Portland,OR U.S.A.97224 SCALE: 6 N/A K:\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\WorL.Plan\Figure 6-7 - Removal Action Details - Notee.dwg - Figure 6 - Removal Action Details - Sep. 28. 2011 3:14pm - stephone.descombes PROJECT PREPARATION 2.CLEARING AND GRUBBING SHALL CONSIST OF THE FELLING,TRIMMING,AND CUTTING OF SMALL TREES(LESS THAN 3.NO OTHER AREAS SHALL BE EXCAVATED WITHOUT APPROVAL OF ENGINEER.IT IS ASSUMED THAT ALL SOILS THAT ARE 4-INCHES IN DIAMETER),SHRUBS AND OTHER VEGETATION INTO SECTIONS AND THE SATISFACTORY DISPOSAL OF THE REMOVED WITHIN THE PROJECT AREA ARE IMPACTED. EXCAVATION SHALL BE PERFORMED IN A MANNER THAT WILL LIMIT HEALTH AND SAFETY VEGETATION DESIGNATED FOR REMOVAL,INCLUDING DOWNED TIMBER,LOGS,STUMPS,SHRUBS,SNAGS,AND BRUSH SPILLS AND THE POTENTIAL FOR CONTAMINATED MATERIAL TO BE MIXED WITH UNCONTAMINATED MATERIAL. 1.THE TOP PRIORITY DURING IMPLEMENTATION OF THE REMOVAL ACTION IS TO CONDUCT ALL ACTIVITIES IN A MANNER OCCURRING WITHIN THE OPERATIONS AREAS,SUPPORT AREAS,EXCAVATION AREAS,AREAS TO BE REMEDIATED,AND THAT IS PROTECTIVE OF WORKERS,PUBLIC,AND THE ENVIRONMENT.THE CONTRACTOR WILL CONDUCT THE WORK IN TREATMENT AREAS.TREES HAVING DIAMETERS GREATER THAN 4-INCHES SHALL NOT BE PRESERVED,TO THE MAXIMUM ACCORDANCE WITH A SITE-SPECIFIC HEALTH AND SAFETY PLAN(HSP). EXTENT PRACTICABLE. 4.SOIL SHALL BE EXCAVATED TO 1-INCH BELOW GROUND SURFACE ACROSS EACH EXCAVATION AREA. 3.CARE SHALL BE TAKEN TO REMOVE SOIL FROM THE ROOTS OF THE MATERIAL DURING GRUBBING.VISUAL INSPECTION OF 2.ALL ON-SITE PERSONNEL PERFORMING DUTIES WILL HAVE MET 29 CFR 1910.120 AND 29 CFR 1926.65(E)40 HOUR THE GRUBBED MATERIAL WILL BE PERFORMED TO ENSURE THAT THE SOIL IS ADEQUATELY REMOVED. 5.EXCAVATED SOIL SHALL BE DIRECTLY LOADED IN A DUMP TRUCK AND TRANSPORTED OFF-SITE FOR DISPOSAL AT A HAZWOPER TRAINING REQUIREMENTS,HAVE A MINIMUM OF THREE DAYS ACTUAL FIELD EXPERIENCE UNDER THE DIRECT PERMITTED LANDFILL.TRUCKS LEAVING THE SITE SHALL BE LOADED AT THE BOUNDARY OF THE EXCLUSION ZONE AND SUPERVISION OF A TRAINED EXPERIENCED SUPERVISOR,AND BE COMPLIANT WITH THE EIGHT HOUR ANNUAL HAZWOPER SPILL CONTROL SHALL BE BROOMED OFF BEFORE LEAVING THE AREA. REFRESHER TRAINING REQUIREMENTS 1.IN THE EVENT OF A SPILL OR RELEASE OF A HAZARDOUS SUBSTANCE(AS DESIGNATED IN 40 CFR 302),POLLUTANT, CONTAMINANT,OR OIL(AS GOVERNED BY THE OIL POLLUTION ACT(OPA),33 U.S.C.2701 ET SEQ.)THE SUBCONTRACTOR 6.ALL SOIL LOADS SHALL BE TRANSPORTED IN LINED WATER-TIGHT TRUCKS WITH COVERS. 3.THE CONTRACTOR SHALL ESTABLISH AN EXCLUSION ZONE AROUND THE ACTIVE WORK AREA BEFORE BEGINNING WORK. WILL PERFORM IMMEDIATE CONTAINMENT ACTIONS TO MINIMIZE THE EFFECT OF THE SPILL OR LEAK.ANY ADDITIONAL CLEANUP ACTIONS WILL BE COMPLETED IN ACCORDANCE WITH FEDERAL STATE,AND LOCAL REGULATIONS. SITE RESTORATION QUALITY ASSURANCE AND QUALITY CONTROL(QA/QC). 1.ANY EROSION AND SEDIMENT CONTROL BMPS THAT WERE IMPLEMENTED DURING THE REMOVAL ACTION SHALL REMAIN 1.ALL WORK SHALL BE CONDUCTED IN ACCORDANCE WITH THE PLANS AND SPECIFICATIONS,UNLESS CHANGES ARE APPROVED IN WRITING BY THE ENGINEER,THE OWNER AND ALL OTHER NECESSARY AGENCIES BEFORE THE CHANGE IS 2,THE CONTRACTOR SHALL ABSORB ANY LIQUID OR SLUDGE SPILLS WITH SAND,CLEAN FILL,OR OTHER ABSORBENT INSTALLED AND SHALL BE MAINTAINED DURING THE RESTORATION PHASE OF WORK UNTIL VEGETATION IS ESTABLISHED. COMPLETED. MATERIAL TO THE MAXIMUM EXTENT POSSIBLE AND DISPOSE OF THE ABSORBENT/SPILL MIXTURE IN ACCORDANCE WITH ALL LOCAL,STATE AND FEDERAL REQUIREMENTS. 2.ALL FINAL GRADES SHALL MEET THE EXISTING GRADES TO THE MAXIMUM EXTENT POSSIBLE,UNLESS OTHERWISE NOTED. MEETINGS AND COMMUNICATION 3.BIODEGRADEABLE,WOVEN JUTE MATTING,SUCH AS COCONUT FIBER MATTING,SHALL BE PLACED ALONG THE TOP OF 1.THE ENGINEER SHALL SCHEDULE AND ADMINISTER A PRE-CONSTRUCTION JOB CONFERENCE,PERIODIC PROGRESS SEDIMENT REMOVAL BANK ALONG THE LENGTH JUTE THE AEDING,SUCH CH AS CL AREA FIBER CREEK MATTING,AREAS BE PLACED THE ALONG THE SURFACE OF IS MEETINGS.THE OWNER AND CONTRACTOR SHALL BE PRESENT AT THE MEETING. 1.ALL SEDIMENT REMOVAL WORK AREAS SHALL BE STAKED BEFORE REMOVAL WORK BEGINS,INCLUDING TURBIDITY EXPOSED FROM THE VEGETATION THE SEDI JUTE REMOVAL R ALABT THE CREEK IN IN REASWHEREWITH GROUND SURFA E I MONITORING LOCATIONS. REQUIREMENTS. 2.DAILY TAILGATE SAFETY MEETINGS SHALL BE HELD DURING ACTIVE CONSTRUCTION ACTIVITIES.THE DAILY TAILGATE SAFETY MEETINGS WILL BE LEAD BY THE FIELD SUPERVISOR,AND ALL EMPLOYEES MUST BE IN ATTENDANCE.NO WORK 2.WORK SHALL NOT PROGRESS UNTIL AN UPGRADIENT CHECK DAM,AND ALL UPGRADIENT,DOWNGRADIENT AND 4.THE CONTRACTOR SHALL SEED DISTURBED AREAS WHERE EXTENSIVE DISTURBANCE OCCURRED DURING THE REMOVAL SHALL BEGIN AT THE SITE BEFORE THE DAILY TAILGATE SAFETY MEETING IS COMPLETED. SECONDARY SEDIMENT TURBIDITY CURTAINS ARE INSTALLED. ACTNITEIS. NATIVE RIPARIAN GRASS SEED WILL BE APPLIED TO BARE STREAM BANK AREAS TO PROVIDE EROSION CONTROL AND HERBACEOUS GROUND COVER. 3.ALL MEETINGS WILL BE OUTSIDE OF THE EXCLUSION ZONE. 3.TURBIDITY SHALL BE MONITORED WITHIN THE CREEK DURING REMOVAL ACTIVITIES. IN THE EVENT THAT TURBIDITY READINGS OUTSIDE THE LOCAL CURTAIN EXCEED 50 NTUS OR 20%MORE THAN THE BACKGROUND TURBIDITY VALUE 5.NATIVE SOILS ARE PRESENT AT THE PROJECT AREA AND ARE NOT EXPECTED TO REQUIRE AMENDMENT. MULCH MAY BE MOBILIZATION (WHICHEVER IS GREATER)THE CONTRACTOR SHALL MODIFY OR CEASE REMEDIAL ACTIVITIES AS SPECIFIED ABOVE,UNTIL USED DURING PLANTING,AND WILL CONSIST OF COMPOST THAT IS MATURE AND STABLE. 1.MOBILIZATION TO THE SITE SHALL BE COORDINATED WITH THE OWNER AND ENGINEER.A MINIMUM 5-DAY NOTICE SHALL CONDITIONS RETURN TO BACKGROUND CONDITIONS. BE PROVIDED TO THE AGENCY,BEFORE MOBILIZATION TO THE SHE OCCURS. 6.THE SURFACE OF THE RECEIVING SOIL SHALL BE ROUGHENED,BY TRACKING EQUIPMENT PARALLEL TO THE CONTOUR LINES BEFORE THE SEED IS APPLIED. IF COMMERCIAL FERTILIZER AND THE SECOND APPLICATION OF LIMESTONE ARE 2.MOBILIZATION AND SETUP AT THE SITE SHALL CONSIST OF TRANSPORTING PROJECT PERSONNEL,EQUIPMENT,AND 4.IN-WATER WORK SHALL BE LIMITED ON A SEASONAL BASIS,IN ACCORDANCE WITH LOCAL ENVIRONMENTAL CONDITIONS INCORPORATED WITH HYDROSEEDING,THE SURFACE NEED NOT BE TILLED TO A DEPTH OF 3 INCHES,BUT THE SURFACE SUPPLIES TO THE SITE;AND ESTABLISHING FIELD OFFICES,SANITATION FACILITIES,AND OTHER FACILITIES NECESSARY AND ALL CONDITIONS OF AN APPROVED REMOVAL PERMIT.THE FLOW OF THE WATER STREAM WILL BE MINIMIZED DURING SHALL BE SCARIFIED TO AN APPROXIMATE DEPTH OF 3/4 INCH PRIOR TO SEED APPLICATION. TO SAFELY AND EFFICIENTLY CARRY OUT THE PRESCRIBED WORK. THE REMOVAL ACTION THROUGH THE USE OF AN UPSTREAM CHECK-DAM.THE FLOW WILL BE DIVERTED BEYOND THE WORK AREA USING A BYPASS PUMP AND DIVERSION PIPE TO ENSURE SAFE WORKING CONDITIONS,IF IT BECOMES 7,THE FINAL TOPOGRAPHICAL SURVEY SHALL BE COMPLETED BY A REGISTERED SURVEYOR IN THE STATE OF OREGON. 3.ALL EQUIPMENT DELIVERED TO THE SITE SHALL BE IN GOOD,OPERATIONAL CONDITION AND FREE OF LEAKS. NECESSARY DUE TO INCREASED FLOWS ABOVE THE CAPACITY OF THE CHECK DAM. B.HORIZONTAL ACCURACY WILL BE±0.1 FEET AND A VERTICAL ACCURACY WILL BE 0.01 FEET FOR BENCHMARKS. SOIL AND UTILITY LOCATING 5.REMOVE DEBRIS,INCLUDING PIECES OF WOOD,TREE BRANCHES,SUNKEN LOGS,TREE ROOTS,WIRE,ROPE,COBBLES, SEDIMENT CONFIRMATION LOCATIONS WILL BE SURVEYED TO THE NEAREST 1.0 FOOT HORIZONTALLY AND THE NEAREST 1.THE CONTRACTOR IS RESPONSIBLE FOR LOCATING EXISTING UTILITIES PRIOR TO COMMENCING ANY CLEARING AND BRICKS,AND OTHER WASTE MATERIAL WITHIN THE RIVER BED THAT MAY INHIBIT EXCAVATION OPERATIONS AS WORK 0.5 FEET VERTICALLY. GRUBBING. PROGRESSES ALONG THE CREEK. 2.THE CONTRACTOR WILL NOTIFY THE ENGINEER IMMEDIATELY OF DAMAGE TO OR AN ENCOUNTER WITH AN UNKNOWN 6.DEBRIS AND AQUATIC VEGETATION SHALL BE REMOVED AS NECESSARY TO COMPLETE THE EXCAVATION WITHIN THE EXISTING UTILITY LINE. LIMITS OF EXCAVATION. SEDIMENT AND EROSION CONTROL MEASURES 7.REMOVE SEDIMENT BY USING A LAND-BASED EXCAVATOR EQUIPPED WITH A CLAM SHELL BUCKET,OR EQUIVALENT 1.SEDIMENT AND EROSION CONTROL MEASURES SHALL BE IMPLEMENTED IF THEY BECOME NECESSARY. METHOD,APPROVED BY THE ENGINEER. HAND-TOOL REMOVAL METHODS MAY BE NECESSARY FOR DEBRIS REMOVAL OR 2.NO WORK SHALL BE CONDUCTED IN ADJACENT DESIGNATED WETLAND AREAS. LIMITED AREAS OF SEDIMENT THAT ARE INACCESSIBLE USING THE EXCAVATOR. ACCESS ROUTES 8.THE HORIZONTAL EXTENT OF THE FINE GRAINED SEDIMENT REMOVAL WIDTH WILL VARY IN WIDTH ACROSS THE CREEK. 1.THE TRANSPORTATION ROUTES SHALL INCLUDE AND BE CONSISTENT WITH THE ROUTE SHOWN ON THE DRAWINGS. AT A MINIMUM,THE FINE-GRAINED SEDIMENT EXCAVATION WILL BE EXTENDED TO WITHIN 2-INCHES OF THE ORDINARY HIGH WATER LINES.THE FINAL HORIZONTAL EXTENT OF THE EXCAVATION WILL BE DETERMINED IN THE FIELD,BASED ON 2.ACCESS ROUTES REQUIRED FOR THE WORK SHALL BE MAINTAINED(INCLUDING SPRINKLING FOR DUST CONTROL,SAFETY VISUAL INSPECTION BY THE FIELD SUPERVISOR. PERSONNEL,SIGNALS,AND CONTROL)WITHIN THE WORK AREAS ASSIGNED TO THE CONTRACTOR.CONSIDERATION SHALL BE GIVEN TO THE AVOIDANCE OF INTERFERENCE WITH OTHERS,SAFETY,AND FREQUENCY OF TRAFFIC.THE 9.FINE GRAINED SEDIMENTS SHALL BE REMOVED TO A VERTICAL DEPTH BETWEEN 0 AND 6-INCHES DEEP. CONTRACTOR SHALL BE RESPONSIBLE FOR REPAIR OF DAMAGE TO EXISTING ROADS CAUSED BY ITS OPERATION.DIVETS AND POTHOLES SHALL BE REPAIRED THROUGHOUT THE CONSTRUCTION PHASE OF THE WORK. 10. THE REMOVED SEDIMENTS SHALL BE TRANSPORTED WITH CARE TO THE SEDIMENT STAGING AREA FOR DEWATERING. IF STAKING POSSIBLE,THE REMOVED SEDIMENTS SHALL BE LOADED DIRECTLY INTO A DEWATERING BOX. OTHERWISE,THE REMOVED 1.THE CONTRACTOR SHALL ESTABLISH LINES AND LEVELS,LOCATE AND LAYOUT,BY INSTRUMENTATION AT THE FOLLOWING SEDIMENT SHALL PLACED IN DUMPING HOPPER AND TRANSPORTED USING A FORKLIFT OR BOBCAT LOADER,OR EQUIVALENT,THEN TRANSFERRED INTO A DEWATERING BOX AT THE SEDIMENT STAGING AREA. THE SELECTED METHOD LOCATIONS AT A MINIMUM: SHOULD ALSO INCLUDE PRECAUTIONS TO MINIMIZE ADDITIONAL RE-SUSPENSION OF SEDIMENTS WHEN TRANSPORTING A.STATIONS ALONG THE LENGTH OF CREEK SHALL BE ESTABLISHED AT 25 FOOT MINOR INTERVALS. TO THE SEDIMENT STAGING AREA. B.TURBIDITY MONITORING LOCATIONS,INCLUDING BACKGROUND AND DOWNSTREAM SAMPLE COLLECTION LOCATIONS. 11. THE QUANTITY OF EXCESS WATER GENERATED DURING SEDIMENT REMOVAL SHOULD BE MINIMIZED AND TURBIDITY AND 2.EACH LOCATION SHALL BE IDENTIFIED ON THE WOODEN STAKE. RE-SUSPENSION OF SEDIMENTS SHOULD BE MINIMIZED. CLEARING AND GRUBBING 12. UPON EXCAVATION,ALL SEDIMENTS SHALL BE PLACED ON THE SEDIMENT STAGING AREA,DEWATERED,AND TESTED TO DETERMINE WASTE DISPOSITION. 1.THE CONTRACTOR SHALL CLEAR AND GRUB ONLY IN THOSE AREAS NECESSARY TO COMPLETE THE WORK REQUIRED. IN GENERAL,THE LIMITS FOR CLEARING AND GRUBBING SHALL BE MARKED IN THE FIELD BY THE CONTRACTOR AND SOIL REMOVAL APPROVED BY THE ENGINEER BEFORE THE WORK IS CONDUCTED AT THE APPROXIMATE LOCATIONS SHOWN ON THE PLANS. 1.NO EXCAVATION SHALL BE PERFORMED UNTIL SITE UTILITIES HAVE BEEN FIELD LOCATED. 2.EXCAVATION SHALL BE CONDUCED IN A SAFE MANNER TO PREVENT FAILURE IN SLOPED OR EXCAVATED AREAS. CLIENT: DWN BY: PROJECT: DATE: REMOVAL ACTION SD SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'DBY: FORMER COE MANUFACTURING FACILITY- FRONT PARCEL PROJECT NO: I-IN 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-116854 ,DATUM: N/A TITLE. REV.NO.: i AMEC Earth & Envronmental amec PROJECTION: 1 76S.W.Durham d N/A REMOVAL ACTION NOTES FIGURE No. Portland,OR.U.S.A.97224 SCALE: 7 N/A K:\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\WorI_Plan\Figure 6-7 - Removal Action Details - Notes.dwg - Figure 7 - Removal Action Notes - Sep. 28, 2011 3:15pm - stephane.descombes amed APPENDIX A Tract B Remedial Investigation Analytical Results TABLE A.1 Constituents Detected in Surface Soil Former Coe Manufacturing Facility-Tract B Tigard,Oregon N c 0 .0 m C.) Cr) O U C N >. N a) ra U I C ca c a) a C a) ro T 0 co O) Q cin C E as 0 rL 0 a .0 1.0 N as a) = d .0 a) i- U 7 C tan O 'n O) C C E E E o_ cn t) ) R a o to o `o U . O 4 C C Y U co > N ` U U ca . CO 0 0 0 O _ J _ gL Z N 0 O S L. m 0 Q Q JSCS Soil/Stormwater Sediment SLV 7 NL 1 111 149 NL 17 1,100 48.6 459 NL NL NL NL 0.300 1.29 0.3 0.2 Probable Effects Level for Freshwater Sediment NL NL NL NL NL NL 91.3 NL NL 315 _ NL NL NL NL NL NL NL NL Sample Sample Interval Sample ID Sample Date Consultant Interval Start End mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg (ft bus) (ft bast NFAGP-2(0.5'-1.5') 3/29/2007 Creekside Environmental 0.5 1.5 6.08 167 0.768 456 NA NA 1,550 NA NA NA 109 NA 629 NA 0.124 0.0989 0.476 <0.0819 NFAGP-3(1'-2') 3/29/2007 Creekside Environmental 1.0 2.0 10.2 123 <0.594 10.4 15.7 21,900 14.1 1,300 7.63 46.2 142 NA 644 NA <0.0827 <0.0827 <0.0411 <0.0411 HA-1(0.75'-1.25') 4/27/2007 Creekside Environmental 0.8 1.3 3.13 136 0.663 36.5 42.4 2,820 115 504 17.0 130 1,030 NA 5,100 NA NA NA <0.245 <0.203 HA-2(0.75'-1.25') _ 4/27/2007 Creekside Environmental 0.8 1.3 2.76 84.7 <0.545 58.9 40.1 2,500 190 419 9.77 86.7 37.3 NA 239 NA NA NA 0.338 <0.0359 AB-07,0-1 FT 5/21/2008 AMEC 0.0 1.0 24.1 NA NA NA NA NA 58.1 NA NA NA NA NA NA NA NA NA 0.460 <0.037 AB-08,0-1 FT 5/21/2008 AMEC 0.0 1.0 22.2 NA NA NA NA NA 86.8 NA NA NA NA NA NA NA NA NA 0.310 0.170 AB-08,2-3 FT 5/21/2008 AMEC 2.0 3.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <0.041 <0.041 AB-10,0-1 FT 5/21/2008 AMEC 0.0 1.0 4.37 NA NA NA NA NA 90.3 NA NA NA <53.4 392 NA NA <0.370 <0.370 0.300 0.130 AB-35.0-1 Ft 6/20/2011 AMEC 0.0 1.0 2.72 NA NA 19.9 NA NA 48.4 NA NA NA NA NA NA NA NA NA 0.719 0.218 AB-35.2-3 Ft 6/20/2011 AMEC 2.0 2.0 NA NA NA NA NA NA NA NA NA _ NA NA NA NA NA NA NA 1.37 0.188 AB-36.0-1 Ft 6/20/2011 AMEC 0.0 1.0 <2.25 NA NA 26.6 NA NA 81.9 NA NA NA NA NA NA NA NA NA 0.315 0.0998 AB-36,2-2.5 Ft 6/20/2011 AMEC 2.0 2.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 3.53 0.312 AB-37,0-1 Ft 6/20/2011 AMEC 0.0 1.0 NA NA NA 17.4 NA NA 41.9 NA NA NA NA NA NA NA NA NA 0.724 0.162 AB-37.2-2.5 Ft 6/20/2011 AMEC 2.0 2.5 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <0.106 <0.106 AB-38,0-1 Ft 6/20/2011 AMEC 0.0 1.0 <2.37 NA NA 12.0 NA NA 35.8 NA NA NA NA NA NA NA NA NA 0.0430 0.0141 AB-39,0-1 Ft 6/20/2011 AMEC 0.0 1.0 NA NA NA NA NA NA 57.2 NA NA 104 NA NA NA NA NA NA 1.54 0.297 AB-39,2-3 Ft 6/20/2011 AMEC 2.0 3.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0929 <0.0929 AB-40,0-1 Ft 6/20/2011 AMEC 0.0 1.0 4.61 NA NA 29.6 NA NA 78.6 NA NA NA NA NA NA NA NA NA 0.288 0.0909 AB-41,0-1 Ft 6/20/2011 AMEC 0.0 1.0 5.77 NA NA NA NA NA 25.3 NA NA NA NA NA NA NA NA NA 0.0813 0.036 AB-42,0-1 Ft 6/20/201 I AMEC 0.0 1.0 NS NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 0.226 -.0.0857 AB-43,0-1 Ft 6/20/2011 AMEC 0.0 1.0 3.12 NA NA NA NA NA 67.9 NA NA NA NA NA NA NA NA NA 2.59 0.370 AB-43,2-3 Ft 6/20/2011 AMEC 2.0 3.0 NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0868 <0.0868 AB-44,0-1 Ft 6/20/2011 AMEC 0.0 1.0 NA NA NA NA NA NA 59.4 NA NA NA NA NA NA NA NA NA NA NA AB-45.0-1 ft 6/20/2011 AMEC 0.0 1.0 NA NA NA NA NA NA 125 NA NA NA NA NA NA NA NA NA NA NA AB-46.0-1 ft 6/20/2011 AMEC 0.0 1.0 NA NA NA NA NA NA 75.5 NA NA NA NA NA NA NA NA NA NA NA Notes: mg/kg=milligrams per kilogram ft bgs=feet below ground surface BOLD=constituent detected at or above laboratory method reporting limit(MRL) NA=constituent not analyzed in sample <=constituent not detected at or above listed MRL Gray shading indicates concentration detected exceeds background andbr SLV. DEQ Level II SLV=Soil Screening Level Value.Oregon Department of Environmental Quality Guidance for Ecological Risk Assessment. December 1998(updated December 2001). JSCS SLV= Portland Harbor Joint Source Control Screening Level Value for Upland Soil/Stormwater Sediment,Table 3-1,July 16,2007 Revision Probable Effects Level for Freshwater Sediment-Smith SL,MacDonald DD,Keenleyside KA,Ingersoll CG,and Field J.1996.A preliminary evaluation of sediment quality assessment values for freshwater ecosystems.JGreat Lakes Res 22:624-638. RealNet Investment,LLC Former Coe Manufacturing Faciliity-Front Parcel Tigard,Oregon 0-61M,1t6854 Removal Action Work Plan September 2011 K:\11000\11600\11685\116854 Front Parcel\Tract B\Removal\Removal Work Plan\Appendix A -RI Data\Tract B Rem WP Tables.xlsTbl A.1 Surf Soil Page 1 of 1 TABLE A.2 Constituents Detected in Redrock Creek Sediment Former Coe Manufacturing Facility-Tract B Tigard,Oregon N c 0 .o N R U U C a rp U V • C Or T O @ d C N 0 D) a C c c y w 0 c 0 2 0 E rn , - d co U 7 2 c c Q . 0 co 3 C a) 7 E 2 d -0 Y O N J co V a C co c U N N N _co Q CO U U U 0 a. J g Z N o O LL 2 O DEO Level II SLV 6 NL 0.6 37 36 NL 35 1,100 18 123 NL NL NL NL NL Background 7 A 690 B 1 A 100 B 55 B 67,000 6 17 A 2,100 B 40 B 340 B NL NL NL NL NL Probable Effects Level for Freshwater Sediment NL NL NL NL NL NL 91.3 NL NL 315 NL NL NL NL NL Sample ID Sample Date Consultant mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg SED-1 11/17/00 Tighe&Bond 4.30 NA NA NA NA 16,400 25.3 660 NA NA NA 120 1,000 NA NA RRC-SS5 05/30/07 Creekside Environmental 8.01 165 <0.689 29.3 NA NA 51.6 NA NA NA <21.6 <53.9 NA <108 NA RRC-SS6 05/30/07 Creekside Environmental 5.20 138 <0.919 31.1 42.1 13,500 54.8 743 19.3 351 <30.6 <76.6 NA 801 NA RRC-SS7 05/30/07 Creekside Environmental 7.63 281 <0.773 36.5 25.9 19,000 43.4 932 21.4 102 <25.6 <64.1 NA <128 NA RRC-SS8 05/30/07 Creekside Environmental 5.35 176 0.946 32.1 NA NA 115 NA NA NA <26.7 <66.7 NA 491 NA RRC-SS14 08/14/09 AMEC 5.85 NA <1.86 28.1 34.7 NA 60.2 NA 18.6 312 <28.6 150 F-07 NA NA 880 F-03 RRC-SS15 08/14/09 AMEC 6.89 NA 2.38 48.6 53.6 NA 112 NA 28.6 382 <33.1 846 f-07 NA NA 3,820 F-03 RRC-SS16 08/14/09 AMEC 6.17 NA <0.522 32.3 39.2 NA 50.1 NA 22.9 331 <31.4 <239 NA NA 1,040 F-03 RRC-SS17 07/07/11 AMEC NA NA NA NA NA NA 23.7 NA NA 76.0 NA NA NA NA NA RRC-SS18 07/07/11 AMEC NA NA NA NA NA NA 135 NA NA 235 NA NA NA NA NA RRC-SS19 07/07/11 AMEC NA NA NA NA NA NA 127 NA NA 200 NA NA NA NA NA RRC-SS20 07/07/11 AMEC NA NA NA NA NA NA 131 NA NA 219 NA NA NA NA NA RRC-SS21 07/07/11 AMEC NA NA NA NA NA NA 1,610 NA NA 1,000 NA NA NA NA NA RRC-SS22 07/07/11 AMEC NA NA NA NA NA NA 161 NA NA 351 NA NA NA NA NA RRC-SS23 07/07/11 AMEC NA NA NA NA NA NA 107 NA NA 403 NA NA NA NA NA RRC-SS24 07/07/11 AMEC NA NA NA NA NA NA 123 NA NA 188 NA NA NA NA NA RRC-SS25 07/07/11 AMEC NA NA NA NA NA NA 102 NA NA 247 NA NA NA NA NA RRC-SS26 07/07/11 AMEC NA NA NA NA NA NA 81.5 NA NA 126 NA NA NA NA NA RRC-SS27 07/07/11 AMEC NA NA NA NA NA NA 61.2 NA NA 393 NA NA NA NA NA RRC-SS28 07/07/11 AMEC NA NA NA NA NA NA 19.2 NA NA 67.8 NA NA NA NA NA RRC-SS29 07/07/11 AMEC NA NA NA NA NA NA 44.7 NA NA 304 NA NA NA NA NA RRC-SS30 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS31 07/07/11 AMEC NA NA NA NA NA NA 69.1 NA NA 279 NA NA NA NA NA RRC-SS32 07/07/11 AMEC NA NA NA NA NA NA NA NA NA 71.4 NA NA NA NA NA RRC-SS33 07/07/11 AMEC NA NA NA NA NA NA 48.9 NA NA 247 NA NA NA NA NA RRC-SS34 07/07/11 AMEC NA NA NA NA NA NA 59.4 NA NA 123 NA NA NA NA NA RRC-SS35 07/07/11 AMEC NA NA NA NA NA NA 52.0 NA NA 335 NA NA NA NA NA RRC-SS36 07/07/11 AMEC NA NA NA NA NA NA 48.1 NA NA 275 NA NA NA NA NA RRC-SS37 07/07/11 AMEC NA NA NA NA NA NA 106 NA NA 155 NA NA NA NA NA RRC-SS38 07/07/11 AMEC NA NA NA NA NA NA 47-4 NA NA 352 NA NA NA NA NA RRC-S539 07/07/11 AMEC NA NA NA NA NA NA 42.2 NA NA NA NA NA NA NA NA RRC-SS40 07/07/11 AMEC NA NA NA NA NA NA 109 NA NA 286 NA NA NA NA NA RRC-SS41 07/07/11 AMEC NA NA NA NA NA NA 144 NA NA 310 NA NA NA NA NA RRC-SS42 07/07/11 AMEC NA NA NA NA NA NA 83.4 NA NA 281 NA NA NA NA NA RRC-SS45 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA Upstream Samples RRC-SS4 05/30/07 Creekside Environmental 7.54 194 <0.907 22.7 37.0 13,100 39.4 941 25.5 230 5.89 333 NA 1,580 NA SED-Z 12/17/02 Tighe&Bond 5.54 320 <0.919 51.6 NA NA 79.6 NA NA NA 9.24 111 547 NA NA RRC-SS13 08/14/09 AMEC 9.56 NA <1 42 32.3 26.4 NA 38.3 NA 21.4 _ 129 <22.3 118 F-07 NA NA 543 F-03 RRC-SS46 07/07/11 AMEC NA NA NA NA NA NA 34.2 NA NA _ 269 NA NA NA NA NA RRC-SS47 07/07/11 AMEC NA NA NA NA NA NA 31.7 NA NA 94 NA NA NA NA NA RRC-SS48 07/07/11 AMEC NA NA NA NA NA NA 24.5 NA NA 104 _ NA NA NA NA NA RRC-SS49 07/07/11 AMEC NA NA NA NA NA NA 14.9 NA NA _ 133 _ NA NA NA NA NA RRC-SS50 07/07/11 AMEC NA NA NA NA NA NA 76.5 NA NA 185 NA NA NA NA NA RRC-SS51 07/07/11 AMEC NA NA NA NA NA _ NA 53.8 NA NA 170 _ NA NA NA NA NA RRC-SS53 07/07/11 AMEC NA NA NA NA NA NA NA NA NA 104 NA NA NA NA NA RealNet Investment,LLC Former Coe Manufacturing Facility-Front Parcel Tigard,Oregon 0-61M-116854 Removal Action Work Plan September 2011 K.\11000\11600\11685\116854 Front Parcet\Tract B\Removal\Removal Work PlantAppendix A .RI Data\Tract B Rem WP Tables.xls\Tbl A.2 Sect Page 1 0l 2 TABLE A.2 Constituents Detected in Redrock Creek Sediment Former Coe Manufacturing Facility-Tract B Tigard,Oregon m o y C C I C N C a, 2 O C N U >. .c _N .c t0 o. y C e. 0 r d C l9 y W U d C N O OO O O C co O N N >. 7 . 7 C M d C Q N rD t C O. w = w: y r L N -E .N- r r r L U io a 0Y_ C o.l0 O O O O y C CO O o C O O O O O- y = C C C C C T d O N L d U U U U U C y 0, o o y L 7 C -o T O O O O 1-2 O 4 4 m m m m w U 6 LL C a. o. . Q .4 4 h DEC Level II SLV 0.29 0.057 0.032 0.032 NL 0.300 0.027 0.057 0.033 0.111 0.017 0.042 0.053 NL 0.021 0.007 NL 0.034 Background NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL Probable Effects Level for Freshwater Sediment NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL NL 0.277 Sample ID Sample Date Consultant mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg SED-1 11/17/00 Tighe&Bond NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0540 <0.0540 0.100 <0.0540 0.100 RRC-SS5 05/30/07 Creekside Environmental NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS6 05/30/07 Creekside Environmental <0.125 <0.125 0.242 0.26 0.277 0.214 0.253 0.341 e 0.125 0.535 0.157 0.248 11.475. <0.0628 <0.0628 <0.0628 <0.0628 <0.0628 RRC-SS7 05/30/07 Creekside Environmental NA NA NA NA NA NA NA NA NA NA NA NA NA 4 <0.107 <0.107 1.41 <0.107 t41 RRC-SS8 05/30/07 Creekside Environmental <0.123 <0.123 0.186 0.228 0.247 0.214 0.217 0.259 <0.123 0.415 0.165 0.179 0.969"= <0.0616 <0.0616 0.0804 <0.0616 0.0804 RRC-SS14 08/14/09 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0123 0.0201 0.0264 <0.0123 0.0465 RRC-SS15 08/14/09 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0169 <0.0169 0.810 0.0858 0.8% RRC-SS16 08/14/09 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0159 0.0211 0.0433 <0.0159 0.0644 RRC-SS17 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00713 <0.00713 <0.00713 0.0217 0.0217 RRC-SS18 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00560 <0.00560 0.0330 0.0259 0.0589 RRC-SS19 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS20 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00727 <0.00727 0.0234 0.0186 0.0420 RRC-SS21 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0716 4 <0.00904 0.230 0.0694 0.371 RRC-SS22 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0503 <0.00887 0.0895 0.0374 0.177 RRC-SS23 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0423 . <0.0222 0.113 0.0413 0.197 RRC-SS24 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00545 <0.00545 0.0428 0.0229 0.0657 RRC-SS25 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA _ NA NA NA NA RRC-SS26 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS27 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0241 <0.0241 0.0958 <0.0241 0.0958 RRC-SS28 07/07/11 _ AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00580 <0.00580 0.476 <0.00580 0.476 RRC-SS29 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00801 <0.00801 0.0255 0.0149 0.0404 RRC-SS30 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.00594 <0.00594 0.0174 0.0146 0.0320 RRC-SS31 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0101 <0.00736 0.0608 0.0207 0.0916 RRC-SS32 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0116 <0.0116 <0.0116 <0.0116 <0.0116 RRC-SS33 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0485 <0.0485 1.69 <0.0485 1.69 RRC-SS34 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS35 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS36 07/07/11 _ AMEC NA NA NA NA _ NA _ NA _ NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS37 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS38 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0128 <0.0128 0.0239 <0.0128 0.0239 RRC-SS39 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA RRC-SS40 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0108 <0.0108 0.0426 0.0347 0.0773 RRC-SS41 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0181 <0.0107 0.0455 0.0336 0.0972 RRC-SS42 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA 0.0476 <0.0103 0.0438 0.0331 0.125 RRC-SS45 07/07/11 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0157 <0.0157 <0.0157 0.410 0.410 Upstream Samples RRC-SS4 05/30/07 Creekside Environmental 0.138 0.325 1.03 1.06 0.806 0.562 0.903 1.25 0.201 2.25 0.507 1.28 2.03 <0.0306 <0.0306 <0.0306 <0.0306 <0.0306 SED-Z 12/17/02 Tighe&Bond NA NA NA NA NA NA NA NA NA NA NA NA NA <0.152 <0.152 <0.152 <0.227 <0.227 RRC-SS13 08/14/09 AMEC NA NA NA NA NA NA NA NA NA NA NA NA NA <0.0102 <0.0102 0.153 0.0393 0.192 RRC-SS46 07/07/11 AMEC <0.135 0.499 1.20 1.06 1.48 0.737 0.441 1.41 0.206 2.88 0.755 2.05 2.30 <0.00698 <0.00698 0.276 0.0680 0.344 RRC-SS47 07/07/11 AMEC <0.0397 <0.0397 <0.0397 <0.0397 <0.0397 <0.0397 <0.0397 <0.0397 <0.0397 _ <0.0397 <0.0397 <0.0397 0.0397 <0.00757 <0.00757 0.138 0.0430 0.181 RRC-SS48 07/07/11 AMEC <0.0965 <0.0965 <0.0965 <0.0965 <0.0965 <0.0965 <0.0965 <0.0965 <0.0965_ <0.0965 <0.0965 <0.0965 <0.0965 <0.0164 <0.0164 <0.0164 <0.0164 <0.0164 RRC-SS49 07/07/11 AMEC <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 <0.205 < 0.00822 < 0.00822 < 0.00822 < 0.00822 < 0.00822 RRC-SS50 07/07/11 AMEC <0.189 <0.189 <0.189 <0.189 <0.189 <0.189 <0.189 <0.189 <0.189 _ <0.189 <0 189 <0.189 <0.189 < 0.00879 < 0.00879 0.0161 0.00972 0.0258 RRC-SS51 07/07/11 AMEC 0.113 0.0828 0.110 0.122 0.222 0.105 0.222 0.172 <0.0372 0.356 0.0948 0.395 0.291 < 0.00822 < 0.00822 0.0216 0.0200 0.0416 RRC-SS53 07/07/11 AMEC <0.0435 <0.0435 0.0467 0.0537 0.0720 _ 0.0596 <0.0435 0.0694 <0.0435 A 0.101 0.0478 _ 0.0703 0.102 NA NA NA NA NA RealNet Investment.LLC Former Coe Manufacturing Facility-Front Parcel Tigard,Oregon 0-61M-116854 Removal Action Work Plan September 2011 K:\11000/11600/11685\116854 Front Parcet\Tract B\Removal\Removal Work Plan A -RI Data\Tract B Rem WP Tables.xls\Tbl A.2 Sad Page 2 of 2 TABLE A.2 Constituents Detected in Redrock Creek Sediment Former Coe Manufacturing Facility-Tract B Tigard,Oregon Notes: mg/kg=milligrams per kilogram BOLD=constituent detected at or above laboratory method reporting limit(MRL) <=constituent not detected at or above listed MRL NA=constituent not analyzed in sample F-03=Laboratory note:The result for this hydrocarbon range is elevated due to the presence of individual analyte peaks in the quantitation range that are not representative of the fuel pattern reported. F-07=Laboratory note:Results in the diesel organics range are primarily due to overlap from a heavy oil range product. Gray shading indicates concentration detected exceeds background and/or SLV. DEQ Level II SLV=Freshwater Sediment Screening Level Value,Oregon Department of Environmental Quality Guidance for Ecological Risk Assessment. December 1998(updated December 2001). DEQ Bioaccumulative Sediment SLV from DEQ Guidance for Assessing Bioaccumulative Chemicals of Concern in Sediment,January 31,2007.Updated April 3,2007. A Regional Background Value from DEQ Guidance for Assessing Bioaccumulative Chemicals of Concern in Sediment,April 3,2007. B 90th percentile value for Tualatin River Basin United Stated Geological Survey Water-Resources Investigation Report 99-4107(Bonn 1999) Probable Effects Level for Freshwater Sediment-Smith SL,MacDonald DD,Keenleyside KA,Ingersoll CG,and Field J.1996.A preliminary evaluation of sediment quality assessment values for freshwater ecosystems.JGreat Lakes Res 22:624-638. RealNet Investment,LLC Former Coe Manufacturing Facility-Front Parcel Tigard,Oregon 0-61M-116854 Removal Action Work Plan September 2011 K:\11000\11600\11685\116854 Front ParceSTract B\Removal\Removal Work Plan\Appendix A -RI Data\Tract B Rem WP Tables.xls\Tbi A.2 p3 Notes Page 3 of 3 LEGEND: Hand Auger Boring(Creekside,April 2007) 69.1 Lead Concentration(in mg/kg) Z Monitoring Well(Tighe&Bond,2001 &2003) ® Proposed Lead Sediment Removal Area RRC-SS19 ® Sediment Sample(AMEC,July 2011) • 127(o-o 5 n) RRC-SS18 0 Soil Boring(AMEC,July 2011) Approximate Storm Sewer Outfall Location 135(0-0.5 ft.) - - 100 Year Flood Plain RRC-SS17 Sediment Sample(AMEC,August 2009) Approximate Storm Sewer Line 23.7(0-0 ft.) RRC-SS8 115(0-0 5 ft) X Sediment Sample(Creekside,May 2007 � � p ( y ) -► Approximate Storm Water Flow Direction I� 4 ° w Shallow Soil Sample(AMEC,December 2010) ��•�� ���� R6 0(0-0�5 n) 4 " �, -- Taxlot Boundary I * i • Soil Boring(AMEC,February 2011) n Tract B(Taxlot 2S101CA-700) RRC-SS23 , RRC-SS22 , . - x 107(0-0 5 ft) Ijji ik, 161 (o o s ft) 1 Soil Boring(AMEC,May 2008) �� ` ' - G Soil Boring(Creekside,March 2007) RRC-SS20 iiiiiiii • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) 131 (0-05ft) ) .. RRC-SS26 C RRC-SS30 .5(0-0.5 ft) RRC-SS31 RRC-SS25 81 102(0-05ft) RRC-SS29 69.1(0-0.5 ft.) 44.7(0-0.5 ft) SW/SED-1 RRC-SS34 RRC-SS24 25 3(0-0.5 ft) 59.4(0-0 5 ft.) * ry d '� *, 123(0-056) RRC-SS27 ` ` 61.2(0-0.5 R.) RRC-SS6 RRC-SS33 54.8(0-0.5 ft) RRC-S$16 48.9(0-0.5 ft) V, £4 , , lir. b 50.1(0-0.5 ft.)- • RRC-SS36 ', C RRC-SS32 48.1(0-0.5 ft.) ' RRC-SS28 E `r 19.2(0-0.5 ft) ���// RRC-SS38 NFAGP-3 RRC-SS7 ft/lit RRC-SS35 47.4(0-0.5 ft.) 43.4(0-0.5 ft) �' 52(0-0.5 ft) r RRC-SS39 AB-42 0 0 O AB-39 42.2(0-0.5 ft.) AB-41 AB 37 O , ,,, RRC-SS5 0 AB-35 51.6(0-0.5 ft.) ■ ■ AB-11 AB-43 0 O A ' • AB-40 NFAGP-2 \ RRC-SS37 AB-08 AB-07 O AB-36 106(0-0 5 ft) O AB-45 HA-2 ` 6 AB-46 0 O AB-44 v RRC-SS15 AB-38 HA-1 AB-10 112(0-0.5 ft.) AB 09 •AB-32 AB-33 G NFAGP-1 . r AB-22 (ID \ ` .. AB-20• •AB-21 1 \ , NFAGP-4- ■ 0 ■0 12.5 25 37.5 ■ Feet AB-19• AB 17 w AB-16• NOTE:Taxlots and 2009 aerial imagery from ftp.metro-region.org-Metro Data Resource Center. 1 CLIENT: DWN BY PROJECT: DATE: SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO: JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM. NAD83 TITLE REV.NO.: AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: 11810 North Creek Parkway N OR SP North,Ft. LEAD FIGURE NO WA 98011 �� SCALE I inch=25 feet FIGURE 1A K'.\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 1A-Sediment Analytical Results Lead.mxd t LEGEND:'s . ,, �� Hand Auger Boring(Creekside,April 2007) �� O e -7 *A _ �' � Z a Monitoring Well(Tighe&Bond,2001 &2003) °' a RRCSS49 ® Sediment Sample(AMEC,July 2011) 14.9(0-0.5 ft.) RRCSS50 76.5(0-0.5 ft.) O Soil Boring(AMEC July 2011 I ) ® Sediment Sample(AMEC,August 2009) X Sediment Sample(Creekside,May 2007) Fs RRC-SS4 * '° ,.fl Y ft)"' 7.54(0-0.5 OO Shallow Soil Sample(AMEC,December 2010) • Soil Boring(AMEC, February 2011) c Soil Boring(AMEC, May 2008) ' ""`. ', Soil Boring(Creekside,March 2007) *Mill ' _ • Surface WaterlSediment Sample(Tighe&Bond,2001 &2003 .. as CSft) :�':.. ; ( 9 2003) 6131.18740-0.5 ' 53.8 Lead Concentration(in mg/kg) ..:-.-.7".,,77":„--, 7 �� �� Proposed Lead Sediment Removal Area _ ® • Approximate Manhole Location SW/SED-Z • Approximate Storm Sewer Ouffall Location 554(005ft) • •.. Iia. o RRCSS53 --- Approximate Culvert Line ' = h_ Approximate Storm Sewer Line q ., -_ T• axlot Boundary s ' n T• ract B(Taxlot 2S101CA-700) - �� RRCSS48 ., 24.5(0-0.5 ft.) RRC-SS13_ „., ,.-, 4,,,'tire,-'- "'. 9 56(0-0 5 ft) i _ .„.., RRC$$41 RRC-SS44 RRC-SS47 144(0-0.5ft.) " 31.7(005ft) k. RRC-SS52 RRC SS43�i ."r v 1 I ,I RRC-SS42 ".. is // RRC-SS40 ���� ��1 83.4(D- ft.) RRC-SS45 RRC-SS46 ," 34.2(OO5ft.) 109(0-0 5 ft) t 1 ` • :',4ii'.-'RRC-SS14 � '' '' - ,, --.,-,,,, ,,,-.i''.... 1 ;,-:",,i; ' '''.':'.';..:;'' --,-!.- ;,.,..,''' , 1 (11:40 602(0-0.5 C.) �° •AB-34 i . , '2 t '> " 0 2 25 3 s 1 1_ Fee'. ml•I I NOTE Taxlots and 2009 aerial imagery from ftp.metro-region.org-Metro Data Resource Center. CLIENT: DWN BY. SD PROJECT. REMEDIAL INVESTIGATION DATE SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHKD BY: FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO.: - JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM. • NAD83 TITLE REV NO AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: ��� 11810 North Creek Parkway N OR SP North,Ft. LEAD FIGURE NO' Bothell,WA 98011 SCALE. 1 inch=25 feet FIGURE 1B K U 1000\116001116851116851\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 1B-Sediment Analytical Results Lead mxd LEGEND: Hand Auger Boring(Creekside,April 2007) 247 Zinc Concentration(in mg/kg) 2 Monitoring Well(Tighe&Bond,2001 &2003) Proposed Zinc Sediment Removal Area RRC-SS19 ® Sediment Sample(AMEC,July 2011) • Approximate Storm Sewer Outfall Location 200(0-0.5 ft) 0 Soil Boring(AMEC,July 2011) RRC-SS18 — — 100 Year Flood Plain RRC-SS17 235(0-0.5 ft) ® Sediment Sample(AMEC,August 2009) — Approximate Storm Sewer Line 76(0-0.5 ft) RRGSSB` X Sediment Sample(Creekside,May 2007) Approximate Storm Water Flow Direction 4101110► © Shallow Soil Sample(AMEC, December 2010)%IP& RRC-SS21 Taxlot Boundary 1,000(0-0 5 ft) • Soil Boring(AMEC,February 2011) f� RRC-SS23 �" l l Tract B(Taxlot 2S101CA-700) �CI'.� RRC-SS22 ��♦��� "''` 1 Soil Boring(AMEC, May 2008) 403(0-0 5 ft) RRC-SS20 E A. 351 (0-0.5 ft.) 219(0-0.5 ft) @ Soil Boring(Creekside,March 2007) RRC-SS25 ` • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) 247(0-0 5 ft.) C RRC-SS24 RRC-SS26 r RRC-SS7 188(0-0.5 ft.) 126(0-0 5 ft.) `-- 102(0-0.5 ft.)„ IX RRC-SS34 RRC SS30 RRC-SS31 RRC-SS29 279(0-0.5 ft.) 123(0-0.5 ft) 304(0-0.5 ft.) RRC-SS27 ,-.1 SW/SED-1 RRC-SS6 393(0-0.5 ft) ` RRC-SS32 351(0-0.5 ft.) RRC-SS16 Ui\ 71.4(0-0 5 ft.) 331 (0-0 5 ft.) ft\ t. RRC-SS36 1 RRC-SS33 275(0-0.5ft.)%Ilk RRC-SS28 E 2a7 7(0-0(0-0 5 5 ft) ° 67.8(0-0.5 NIIIIIIk NFAGP-3 RRC-SS15 �-., . RRC-SS38 382(0-0.5 ft.) - -ti -RRC-SS35 352(0-0 5 ft )335(0-05 ft)\ AB-42 0 AB-41 O AB-39 0 —""1—r.,.`10 AB-37 0 h1- ,,' AB-43 OAB-35 0 0 R G, SS39 RRC SS5 AB-11 AB-40 NFAGP-2 ° AB-08 AB-07 O AB-36 RRC-SS37 HA-2 155(0-0.5 ft.) 0AB-45" �`AB-38 AB-46 0 O AB-44 A ° HA-1 AB-10 \ -, ° � .a`� j :!4 AB-09 •AB-32 \ AB-33• NFAGP-1 -__'_____� AB-31 • k ® -- S. AB-20• •AB-21 ,4 \ .,.....; ,., ,„„„...,..,,„ ,, \ NFAGP-4 ■ k ■ .. 2`_ 25 37.5 v ■ Feet AB-19 • AB-17'•. AB 16• \ \ - NOTE.Twists and 2009 aerial imagery from ftp.metro-region.org-Metro Data Resource Center I CLIENT. OWN 6V. PROJECT DATE. SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE NAD83 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-6 1M-11685-4 DATUM. TITLE; REV.NO.: AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: 11810 North Creek Parkway N ��� OR SP North,Ft. ZINC FIGURE NO.: Bothell,WA 98011 SCALE: 1lnch=25 feet FIGURE 2A K.\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 2A-Sediment Analytical Results Zinc.mod — ' si .... . ... .. 4 two -,: '''',.. ; 1,, . . ",-r. 7 il j ,,,, .,. , 4 1 ,. s., ... ,.. . .. r LEGEND: �- F f Hand Auger Boring(Creekside,April 2007) 2 Monitoring Well(Tighe&Bond,2001 &2003) RRC o Sft9 o ;RRC-SSSO ® Sediment Sample(AMEC,July 2011) 1 0 18 (0-0 5 ft) 0 Soil Boring(AMEC,July 2011) © Sediment Sample(AMEC,August 2009) - '-°0 X Sediment Sample(Creekside,May 2007) RRC-S4 230(0-0.5 ft.) :- Shallow Soil Sample(AMEC,December 2010) - • Soil Boring(AMEC,February 2011) A Soil Boring(AMEC,May 2008) • Soil Boring(Creekside,March 2007) RRC-SS51 -- • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) 170(0-05ft) 53.8 Zinc Concentration(in mg/kg) Proposed Zinc Sediment Removal Area • Approximate Manhole Location • Approximate Storm Sewer Outfall Location SWWSED-Z o _ RRC-SS53 ----- Approximate Culvert Line - 10P1 10-0,,f',1 - Approximate Storm Sewer Line Taxlot Boundary F-1 Tract B(Taxlot 2S101CA-700) RRC-SS48 ` 104(0-0.5 ft) RRC-SS13 129(0-0 5 ft.) RRC-SS47 94(0-0.5 ft.) — RRC-SS44 RRC-SS41 310(0-0.5ft) -.__ -________ RRC-SS43 G ,, 4 L RRC-SS52 I RRC-SS40 L R 281 (0-0 5 t RRC-SS46 281 (0-0 5 ft) RRC-SS45 286(0-0.5 ft.) 269(0-0 5 ft) yA �° A RRC-SS14 i , 312(0-0.5 ft.) • AB 34 (1140) - 0 12.5 25 37 5 _. u � ' Feet 1hk NOTE.Taxlots and 2009 aerial imagery from ftp.metro-reglon.org-Metro Data Resource Center. CLIENT: OWN BY PROJECT DATE. : REMEDIAL INVESTIGATION SD SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY. FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 13-61M-11685-4 DATUM. NAD83 TITLE REV.NO.: AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: 11810 North Creek Parkway N OR SP North,Ft. ZINC FIGURE NO• Bothell,WA 98011 �� SCALE 1 inch=25 feet FIGURE 2B K:\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract 8 Removal\Remedial_Investigation\Figure 28-Sediment Analytical Results Zinc mxd LEGEND: Hand Auger Boring(Creekside,April 2007) 0.0320 Total PCB Concentration(in mg/kg) , Monitoring Well(Tighe&Bond,2001 &2003) n Proposed PCB Sediment Removal Area ® Sediment Sample(AMEC,July 2011) • Approximate Storm Sewer Outfall Location RRC-SS19 RRC-SS18 0 Soil Boring(AMEC,July 2011) - - 100 Year Flood Plain RRC-SS17 0.0589(0-0.5 n) -- ® Sediment Sample(AMEC,August 2009) Approximate Storm Sewer Line 0.0217(0-0.5 ft) 0i0k "CMS X Sediment Sample(Creekside,May 2007) :,, -� Approximate Storm Water Flow Direction RRC-SS21 a, Shallow Soil Sample(AMEC, December 2010) 0.371(0-0.5 ft) k "a a w Taxlot Boundary ‘,1,,,,.. '1 44 RRC-SS23 .rte► RRC-SS22 • Soil Boring(AMEC,February 2011) n Tract B(Taxlot 2S101CA-700) 0197(00.5ft) filiMArr, 0.177(0-0 5 ft) RRC-SS20 * Soil Boring(AMEC,May 2008) 0 0420(0-0.5 ft E"Ilildhil" G Soil Boring(Creekside,March 2007) RRG-SS25 0 • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) RRC-SS24 RRC-SS8 0.0657(0-0.5 ft) RRC-SS30 RRC-SS7 0.0804(0-0.5 ft) RRC SS26 0.0320(0-0.5 ft.) 1.41(0-0.5 ft.) lk RRC-SS29 RRC-SS31 % I RRC-SS27 0.0404(0-0.5 ft) .__.---"\ ,.. , .....--,.- 0.0958(0-0.5 ft.) SW/SED-1 . . RRC-SS16 estrisio. 0 100(0-0 5 ft_) 0.0644(0-0.5 ft.)' -�_� RRC ,- !, RRC-SS32 waillimiir (��-0 0101 (0-0.5 ft.) RRC-SS6 `.,,s `r`. <0.0628(0-0.5 ft) RRC-SS28 -� 0.476(0-0.5 ft.) � 11114;69(0-0.5 ft.) - C RRC-SS36 RRC-SS38 NFAGP-3 RRC-SS15 v . 0.0239(0-0 5 ft.) '' 0.896(0-0.5 ft.) Vie' NIIIVROlr AB-42 0 © AB-39 0 �4 RRC-SS35 _�RRG-SS37 RRC-SS39 AB-43 AB-41 AB 37 0 AB-35 AB-400 \ 0',- A RRC-SS5 NFAGP 2 _ AB-07-/ -. ` AB-08 HA-2 AB-36 O AB-45 AB-38 AB-46 0 0 AB-44 A HA-1 AB_1.0 ` -. .- AB-09 c • AB-32 ` AB-33• G NFAGP-1 ---------► AB-31 • .__] \ : ' z" " tam NFAGP-4 s � � ,; --0 12 5 25 37.5 s . * _^ ,. , ', �� Feet *.. st AB-19 • AB 17- 1)r • AB-16 NOTE.Taxlots and 2009 aerial imagery from ftp.metro-reglon.org-Metro Data Resource Center. CLIENT DWN BY PROJECT: DATE: SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 I DATUM NAD83 TITLE: REV.NO.: AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: - 11810 North Creek Parkway N OR SP North,Ft. POLYCHLORINATED BIPHENYLS FIGURE NO Bothell,WA 98011 SCALE 1 inch=25 feet FIGURE 3A K.1 11000\11600\1 1685\1168511DWG\Front Parcel Maps\Tract B Removal\Remedial Investigation\Figure 3A-Sediment Analytical Results PCBs.mxd LEGEND: I Hand Auger Boring(Creekside,April 2007) ® Proposed Sediment Removal Area "-- 2" Monitoring Well(Tighe&Bond,2001 &2003) • Approximate Storm Sewer Outfall Location Z Sediment Sample(AMEC,July 2011) — — 100 Year Flood Plain 0 Soil Boring(AMEC,July 2011) Approximate Storm Sewer Line �9 RRG-SS1 `' RRC- 5117 RRCxSS18 . Sediment Sample(AMEC,August 2009) � Approximate Storm Water Flow Direction $ X Sediment Sample(Creekside,May 2007) Taxlot Boundary RRG-SS8 t#i ' - Shallow Soil Sample(AMEC, December 2010) [ Tract B(Taxlot 2S101CA-700)• • Soil Boring(AMEC,February 2011) RRG SS23°. iiitt A P - RR,-_� 22 4 Soil Boring(AMEC,May 2008) RRC-SS20 lit �,� G Soil Boring(Creekside,March 2007) RC1 S2 ///Iiiii!A • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) RRC SS25 �` / "RRG-SS26 G. RRC SS24' RRC-SS30 u ss RRC-SS29 t+ � RRC 5S7. RR C-SS27 RRC-SS31 RRC-SS34 SS6 RRC-SS16 111//4 SW/SED-1 - Itu RRC-SS32 RRC-SS37 ����� lift" RRC SS33 \! RRC-SS28 .w RRC-SS36 RRC-SS15 filik ,,„,. 1Rcss:: 39 NFAGP 3 AB-42© 0 Q �,r ` ` AB-41 AB-39 CAB 37 AB-35 O `.. AB-11 AB-430 AB-40 NFAGP-2 Ao RRC S5' AB-08 AB-07 O AB-36 • . HA-2 0 AB-45 i . AB-38 AB-46 0 y CAB-44 A '� \ HA-1 --/ AB-10 I` AB 09 •AB-32 AB-33• � � _ NFAGPI � "�► AB-31 • / . ....-,..„ ..4., . . i---AB-22 qt1:11) . AB-21 1t . ,� AB-20• • J \ trp p4 s r ` NFAGP-4 _. 0 12.5 25 37 5 - - #i � �t.� s "'r.""p +y` IlliMiliMIIM Feet ....._ >�,.,.. ,F _ AB-19 • AB-171^ AB-16 • NOTE Taxlots and 2009 aerial imagery from ftp.metro-reglon.org-Metro Data Resource Center. CLIENT OWN BY: PROJECT: DATE SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO.: JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM NAD83 TITLE REV.NO.: AMEC Earth & Environmental PROJECTION 11810 North Creek Parkway N amec� OR SP North,Ft. PROPOSED SEDIMENT REMOVAL AREAS FIGURE NO.: Bothell,WA 98011 SCALE 1 inch=25 feet FIGURE 4A K\11000\11600\11685\116651\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 4A-Proposed Sediment Removal Areas.mxd m'z 7 :- � � .� LEGEND: - �` '` // O Hand Auger Boring(Creekside,April 2007) / 4 * ! Monitoring Well(Tighe&Bond,2001 &200 3) s • ® Sediment Sample(AMEC,July 2011) RRCSS49 _ <0.00822(0 0.5 e.) 5 ( 0 5 ) 0 Soil Boring( ME 01 ) - � RRC SS50 tea- 0.02 a 0 ft. of oring A C,July 2 1 Sample( 4 p (AMEC,August 200 9) -- ® Sediment Sa m A C Augu � � � i � .x X Sediment Sample(Creekside,May 2007) _ RRC-SS4 " ` '- <0.0308(0-0.5 ft.) OO Shallow Soil Sample(AMEC,December 2010) t. , riatt "- • Soil Boring(AMEC,February 2011) w = 440044 s " "s 4 Soil Boring(AMEC,May 2008) G Soil Boring(Creekside,March 2007) _s '`o..>: 1 is RRC-SS51 _ • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) x 0.0416(0-0.5 ft.) ' - . 0.410 Total PCB Concentration(in mg/kg) Proposed PCB Sediment Removal Area :. ;° y ' • Approximate Manhole Location " SWISED-Z i • Approximate Storm Sewer Outfall Location 0.227(0-0.5 ft.) x.: --- Approximate Culvert Line P RRC-SS53 Approximate Storm Sewer Line `,. Taxlot Boundary n Tract B(Taxlot 2S 101 CA-700) RRC-SS48 r . (0-0.5 ft.) N � RRC-SS13 � =-- 0.192(0-0.5 ft.) -. n RRC-SS44 RRC-SS41 RRC- . 0.1 8 1 (0-D S ft) 0-0791 (0-0.5 ft.) ■ ona . " lS A.-- RRC-SS52 _ RRC-SS43 C� �11 7 -° ° ___ __.. ___ _�^J RRC-SS42 RRC-SS40 C, 0-143(0-0 5 ft.) RRC-SS45 RRC-SS46 0 0773(0-0 5 ft) .'f -0.410(0-0.5 ft.) 0.344(0-0 5 ft.)1 j e RRCSS14 // 0"0465(0-0.5 ft.) / • AB-34 ) (IIIID .°...,.. _ 0 12.5 �., _, q s 4 d ;mss Feet NOTE Taxlots and 2009 aerial Imagery from ftp.metro-reglon.org•Metro Data Resource Center. CLIENT: OWN BY. PROJECT DATE SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY. FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM NAD83 TITLE REV.NO AMEC Earth & Environmental PROJECTION SEDIMENT ANALYTICAL RESULTS: - 11810 North Creek Parkway N OR SP North,Ft. POLYCHLORINATED BIPHENYLS FIGURE NO' Bothell,WA 98011 SCALE: 1 inch=25 feet FIGURE 3B K.\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 38-Sediment Analytical Results PCBs mxd 7- ° LEGEND: Hand Auger Boring(Creekside,April 2007) Monitoring Well(Tighe&Bond,2001 &2003) s '; RRC-SSa9 Z Sediment Sample(AMEC,July 2011) [ RRC-SS50 0 Soil Boring(AMEC,July 2011) s © Sediment Sample(AMEC,August 2009) ' ' = X Sediment Sample(Creekside,May 2007) A _ .P �. .. 4.. t j• jam, �' - .n ., Shallow Soil Sample(AMEC,December 201 I A C D m._,� R mpe( 2010) RC'SS4 jig' � " • Soil Boring(AMEC,February 2011) t 1 "� it Soil Boring(AMEC,May 2008) � rSoil Boring(Creekside,March 2007) r i i t • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) RRC-SS51 . 1 ' IL_L_1.! Proposed Sediment Removal Area • Approximate Manhole Location • Approximate Storm Sewer Outfall Location --- Approximate Culvert Line SW ISED-Z •ar' =-� -=,� ._,, "_ ��. Approximate Storm Sewer Line 0 ` Taxlot Boundary•:` °1' Tract B(Taxlot 2S101CA-700) :.RRC-SS48 RRC-SS47 RRC-SS44 RRC-SS41 RRC-SS52/1,1, A® ,. RRC-SS4�3.t C RRC SS42 RRC-SS13 � �,����� RRC-SS45 r� RRC-SS14 RRC-SS46 RRC-SS40 ° •AB-34 41:11) • •., . ;. .-y:.,. ,,, •..e 0 12 5 25 Teet Iiith . t _i. NOTE.Taxlots and 2009 aerial imagery from ftp.metro-npion.org-Metro Data Resource Center. CLIENT: OWN BY PROJECT SD : REMEDIAL INVESTIGATION DATE. SEPTEMBER 2011 REALNET INVESTMENTS, LLC CRKD BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO - JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM. NAD83 TITLE REV NO.: AMEC Earth & Environmental PROJECTION - 11610 North Creek Parkway N OR SP North,Ft. PROPOSED SEDIMENT REMOVAL AREAS FIGURE NO Bothell,WA 98011 ame SCALE 1 inch=25 feet FIGURE 4B K..\11000111600\11685\116851\DWG\Front Parcel Maps\Tract 8 Removal\Remedial_Investigation\Figure 48-Proposed Sediment Removal Areas.mxd RRC 553 0 ::s::13 45 - - .....RRCSS29,, 1' .�_. RRG_SS27,.:" RRC-5534 .. b _ : SW/SED 1 RRC-SS7 �. '" ;• NFAGP-2 RRGSSI . RRC-§S32, ._ . 6.08(0.5-1.5 ft.) RRC-SS6 RRC-SS28" A. RRGSS33 AB-41 RRC-SS36 5.77(0-1 ft) it =RRGSS37: RRC-SS35- =-` ''' AB-35 NFAGP-3 AB-42 0 AB-39`.! =� 014 2 72(0-1 ft J 10.2(1-z ft) AB 37 -• ' RRC-SS38 ° Section 3 �� a °` o . ,_ , E RRC SS42 — AB-11 ,. _ AB-07 RR S39 RRGtS35 AB-43 —_ 24.1(0-1 ft) 3.12(0-1 ft.) `--,�1 a_ \�- - Section 4 lie-AB-4S RRC-5541 G AB-OS �+ Section 5 --. AB-36 RRC-SS40 H RRC-SS14 AB-46® �._AB-44 2z.z(0-1 n.) l I <2.2s(0-1 ft.) /1/ / HA-1 A ` ` HA-2 / 3.13(0.75-1.25 ft) 2.76(0.75-1.25.) • AB 32 A' BLO9 �� AB-33 - / / G NFAGP-1 •AB-34 //1 i // //41■Iry AB-38 M.4.37(0 1 ft.)`�"„"`-1► AB-31 1 1 4 <2.37(0-1 ft) ` \ ////iI/I /*/ 2A AB-22 - - AB-20 QB!21' './ /" I / ` ` ` 7 I//i///t / / r AB-19 //A1 %4' 1 / 4 //17 • 1G02 / 002 v .� / AB=06g 17/11, / �r.,�1C 01 , — LEGEND: AB-18 AB-15 ( AB-114 - Hand Auger Boring(Creekside,April 2007) 3.13 Arsenic Concentration(in mg/kg) LI t/- / /7 / r // 2 Monitoring Well(Tighe&Bond,2001 &2003) ® Proposed Shallow Soil Removal Area �/1 � . 1B-03�, 1B-05 ® Sediment Sample(AMEC,July 2011) (/ AB_0 _1y. / I %i: Previous Shallow Soil Removal Area ® Soil Boring MEC,Jul 2011 r, ' � �AB1011 1B-04 g( y ) • A::: t;: r Outfall Location t://..1°;' , ' © Sediment Sample(AMEC,August 2009) _ - in i i / / �• `( X Sediment Sample(Creekside,May 2007) / Approximate Storm Sewer Line / 1 Shallow Soil Sample(AMEC,December 2010) _� Section'1 BB 1 B-02 Approximate Storm Water Flow Direction 0140) =__ 18 01 • Soil B February 2011) 1 AB 27 1 Soil May 2008) n Tract B(Taxlot 2S101CA-700) 12.5 25 37.5 AB-26 /,// 'AB-'25 Soil Boring(Creekside,March 2007) — '1 I r! N 1111 ♦ Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) 1A-02///////IA8,02 =,r HA-4 /, NOTE:Taxlots and 2009 aerial imagery from ftp.metro-r•glon.orq•Metro Data Resource Center. CLIENT: 1 r , I 1/ ! I 1 /�/1 / / PROJECT: DATE: ` ` owN Bv: SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON DATUM 0-61M-11685-4 NAD83 TITLE REV.NO AMEC Earth & Environmental PROJECTION SHALLOW SOIL ANALYTICAL RESULTS: 11810 North Creek Parkway N OR SP North,Ft. ARSENIC FIGURE NO Bothell,WA 98011 �� SCALE: f inch=25 feet I FIGURE 5 K:\11000111600\116851115851\DWG\Front Parcel Maps\Tract B Removal\Remedial_lnvestigation\Figure 5-Shallow Soil Analytical Results Arsenic mxd '� RRC-SS30 `RRC SS29 RRC-SS27 i, RRC-SS31 AB-35 RRC-SS32 , 19.9(071,k) ' RRC-SS7 RRC SS34.. RRC-SS16 y RRC-SS6 RRC SS28 SW/SED-1 A RRC-S_S33 RRC SS36 RRC-SS15 AB-41 --N ,---%iii . ,, RRC SS35 RRC-SS37 RRC SS38 NFAGP-3 AB 42© AB-39 0 r' r� �, i 1aa(1-2ft) q —"Route,�'�;SectionQ � � AB-43� \N .., �� AB-08 ��► ► ♦ a RRC-SS _ 'RRC SS42 N.AB-11 Section 3 onissi _� NFAGP-2 r. . AB 07' �� 456(0 s-ts ft.) R 0 AB 45 .� HA-2 a AB-36 Section,5 RC S541 - 58.9(0.75-1.25.) A / 26.6(0-1 ft.) AB-46 p p AB-44 RRC S •0�� ' �� ©RRC-SS14 AB 40 ' / HA-1 AB-10 / A 29,6(0-1 ft.) , ♦ / 36.5(0.75-1.25 ft.) I/ AB-37 / I !Od':7 17.4(0-1 ft.) / •AB-32 ! AB-33• 1/ j NFAGP-1 AB-34• AB 1 I � �-- 9 12(0 i ft) Section ir 2A AB-22 AB-20 AB-211``►ce 1 r 1/77 / i , / / J NFAGP-4 ail 1/1 /1,AB-// l7/// // tABi6' - AB-19 i LEGEND: a AB-18 , ' /;AB-15 AB-14 ' O Hand Auger Boring(Creekside,April 2007) 26.6 Chromium Concentration(in mg/kg) ;, ;;` %�!// / J /11/1/ e Monitoring Well(Tighe&Bond,2001 &2003) F9 Proposed Shallow Soil Removal Area �` 1B-03 1B-05 Z Sediment Sample(AMEC,July 2011) AB-05�AB-01 ;, Previous Shallow Soil Removal Area X16-04 �'.''%;j 0 Soil Boring(AMEC,July 2011) • Approximate Storm Sewer Outfall Location ff / 0 Sediment Sample(AMEC,August 2009) — — 100 Year Flood Plain /(l / �+I X Sediment Sample(Creekside, May 2007) Approximate Storm Sewer Line ! J (!:) Section 1BB Shallow Soil Sample(AMEC,December 2010) —0Approximate Storm Water Flow Direction 4,1B-02 �� rflg�/�. 1B-01 • Soil B February 2011)AB 27 .��— ///i�/ Soil May 2008) J " n Tract B(Taxlot 2S101CA-700) 0 12 5 25 37 AB-25 / Soil Boring(Creekside, March 2007) /lf!1/l 1A-02#1‘,/ / / • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) I//// /I j i' -1:/?/ HA-4 / NOTE Taxlots and 2009 aerial imagery from ftp.metro-region.org-Mer-o Data Resou•ce Center CLIENT. DWN BY PROJECT DATE. : REMEDIAL INVESTIGATION SD SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY. FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO' JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM. NAD83 TITLE' REV.NO. AMEC Earth & Environmental PROJECTION SHALLOW SOIL ANALYTICAL RESULTS: - vivo North Creek Parkway N OR SP North,Ft. CHROMIUM FIGURE NO. Bothell,WA 98011 �� scALE. 1 inch=25 feet FIGURE 6 K511000511600\1168511168511DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 6-Shallow Soil Analytical Results Chromium.mxd RRC-SS30 RRC-SS33 i RRC SS31 RRC-SS32 RRC SS35 "`� ' RRC-SS27 RRC-SS29: TM AB-37 41.9(0-1 ft) : NFAGP-2 * 1550(0 5-1.5 ft.) � ai ° i` '''' RRC-SS7 1 RRC SS ,, ' , i �, ' �' 'a RRC``-SS1 ,. RRC SS6 xe - �` AB-39 f - RRC SS28 57.2(0-1 ft) SW/SED-1 A - r RRC-SS36 RC RRC'SS15 AB-41 �� R SS38 ' • 25.3(0-1 ft) a NFAGP-3 AB-42 0 a `���''' RRC SS37 RRC SS39 14.1(1-2 ft.) ����„���w AB 35 5 ),, AB 45 M AB-11 �1/111111,_ a Chalk aa_a(0-1 ft) f= A 125(0-1 ft) `` .� 'RRC-SS42 ' - �Section`4 �RRC-S5 Section 3 �`yl AB-36 � ��-81.9(0-1 ft) P'• AB 43 d ' RRC-§. 41 ,�: id Section 5 ` 67.9(0-1 ft.) `� `_AB-07 ry ` AB_44 ,RR ,..0-SS40 ri �. r 58.1(0-1 ft.) 0 59.4(0-1 ft) A . AB-08___J ------ RRC-SS14 86..(0-1 ft) i / //////' AB-46 HA-1 �, / ' HA-2 �� 1 f�11 f 75.5(0-1 ft.) 115(0.75-1.25 ft.) r 190 0.75-1.25. / 1l AB-09/:' \ •AB-32 ( 1) 1�� ��!' '� AB 33 AB-10 ////! r. (� ' 90.3(0-1 ft.) p NFAGP-1 •AB 34 w �`"�► ABL31' /���� w ` / 1 � AB-38 w 35.8(0-1 ft.) ` ` //k SecA n AB 22 AB-40 t- * 4 t w w , . 78.6(0-1 ft.) t. w AB-20 i•AB-21 fi w / 7/7/ w w NFAGP 4 ■ /w w w�� /��iftt1J � f 1 AB-19 /I, /AI3117 r A&16/'/� � j 1///I7l l/Ls,i/,, 1i02'C� / w e- � 1 w ���16�06 { w .. w /,/�� .!r 4.:1' �1C-01 w w LEGEND: w Hand Auger Boring(Creekside,April 2007) 59.4 Lead Concentration(in mg/kg) AB-18 r AB 15 I I f ABr1'411•// 9 9( P ) ( 9 9) /if ///// 7/ Q' Monitoring Well(Tighe&Bond,2001 &2003) Proposed Shallow Soil Removal Area l lflr/,/ i ��`�I 1B-03 1B-05 Z Sediment Sample(AMEC,July 2011) :AB 05�A 1B-04 ('i Previous Shallow Soil Removal Area ----_________---__:„-,/// ® Soil Boring(AMEC,July 2011) • Approximate Storm Sewer Outfall Location , © Sediment Sample(AMEC,August 2009) / , MW-1; — — 100 Year Flood Plain ./ .ail! X Sediment Sample(Creekside, May 2007) Approximate Storm Sewer Line Cili) Shallow Soil Sample(AMEC,December 2010) Approximate Storm Water Flow Direction ') Section•1BB ` `16-02 1 '17-77--771B-01 • Soil Boring(AMEC,February 2011) Taxlot Boundary AB-27 / f 1 Soil Boring(AMEC,May 2008) n Tract B(Taxlot 2S101CA-700) / C' Soil Boring(Creekside,March 2007 o 25 3'- AB 26 / AB-�51; �; / g( 2007) 1 1 0 (f � (I • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) l Feet / /lA 02 FiA/41 ii i // 1P4 14111 /4 i NOTE Taxlots and 2009 aerial imagery from Rp.metro-region.org-Metro Data Resource Center CLIENT: OWN BY. PROJECT DATE SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO.. JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM NAD83 TITLE REV NO.' AMEC Earth & Environmental PROJECTION SHALLOW SOIL ANALYTICAL RESULTS: 11810 North Creek Parkway N OR SP North,Ft. LEAD FIGURE NO.: Bothell,WA 98011 �� OR 1 inch=25 feet FIGURE 7 K'.111000111600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Remedial_Investigation\Figure 7-Shallow Soil Analytical Results Lead mxd RRC SS30 SW/SED-1 - RRC-SS35 RRC SS 1t, ' %, ` " RR 1 584- ) x A39 C SS29 (0 1 ft NFAGP-2 b ' " RRC-SS32 0.47 ( .5-1 5 , �..- . RRC SS27 ` ~�_ 32 6 0 ft) '" � RRGSS7 RRC-SS34 ;. - AB-41 RRG-SS16 © ^^" t► • - " 0.0813(0-1 ft.) �� �.� .. ,� + RRC SS6 a,� ,��, A AB 42 RRC-SS28 G;Ns r - r „°; _ 0226(0-1 ft.) RRC-SS33 RR,•,SS36 C RRC-SS38 -- RRC-SS15 © C a-� --RRC-S837 a.:., . NFAGP-3 AB-08 RRC SS39 0.310(0-1 ft.) p r� <0 0411 (1-2 ft.) � ar '° 1111111111 �����` AB 35M A y 9 RRC-SS42 AB-11 , � �,` _\� 0 719(0-1 ft) RRC-SS5;: Section 3 �- a� Section 4 0 AB-45 RR•-Sy 1 r� ` 2.59 0B1 ft.) ` �' Section 5: RRC SS4E _� �9 ep AB=46 O OAB-44 - HA-2 �. AB-37 HA-1 RRC SS14) 0.338(0.75-1.25.) � 0.724(0-1 ft.) / ,. / <0.245(0.75-1.25 ft.) I AB-10 AB-40 t f. 0.300(0-1 ft) ` 0.288(0-1 ft.) // AB-09%.• •AB-32 AB-33 /// / O NFAGP-1 • AB-34 --'"�► AB-31 �► './7/(1/// milip AB 6 0.3H153o-1ft.) Section if 2A AB-22 AB-07 0.460(0-1 ft.) AB-20 ' l AB.2� 'A s. 1 ! / %NFAGP-4 / / 0.0430(0-1 ft.) i+� �� I,/ / / " s. AB-19 //I /AB 17 / AB-16/ // 1N/;/jr t/f/ / I AB O6 l 111 / � iC of LEGEND: AB-18 //// AB-15 / AB-14 Hand Auger Boring(Creekside,April 2007) 0.310 PCB(Aroclor 1254)Concentration(in mg/kg) / /� ti�/ '� / /� //// , Monitoring Well(Tighe&Bond,2001 &2003) Proposed Shallow Soil Removal Area ' ' �'� ` ,1B-03�,,`1B-05 ® Sediment Sample(AMEC,July 2011) �_'�\ ); � - ,� I . / Previous Shallow Soil Removal Area -AB-05�AB-01 . a> . 1B-04 / / ® Soil Boring(AMEC,July 2011) • A:: t : e1.Outfall Location • 1 ® Sediment Sample(AMEC,August 2009) in (/ '�( / X Sediment Sample(Creekside,May 2007) Approximate Storm Sewer Line / //1 1 J 1B-02 Shallow Soil Sample(AMEC,December 2010) —go- Approximate Storm Water Flow Direction Section_1BB 1 ® ``� ; / 1 B-01 • Soil Boring(AMEC,February 2011) Taxlot Boundary / AB 27 /��� Soil Boring(AMEC,May 2008) r1 Tract B(Taxlot 2S101CA-700) /r ? j AB-26 ( AB-25 I @ Soil Boring(Creekside,March 2007) 0 12.5 25 37 5 ;/ / 1// Feet / ( i9 2 rs / • Surface Water/Sediment Sample(Tighe&Bond,2001 &2003) HA-4 l/I!/ ///' NOTE Taxlots and 2009 aerial imagery from ftp-metro-region-org-Metro Data Resource Center. CLIENT: DWN BY PROJECT: DATE SD REMEDIAL INVESTIGATION SEPTEMBER 2011 REALNET INVESTMENTS, LLC CHK'D BY FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO.: JE 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-81M-11685-4 DATUM NAD83 TITLE REV.NO AMEC Earth & Environmental PROJECTION SHALLOW SOIL ANALYTICAL RESULTS: 11810 North Creek Parkway N ame OR SP North,Ft. AROCLOR 1254 FIGURE NO: Bothell,WA 98011 OR 1 inch=25 feet FIGURE 8 K.111000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal 1Remedial_Investigation\Figure 8-Shallow Soil Analytical Results Aroclor 1254 mxd Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Monday,August 8, 2011 Joel Eledge Amec Earth and Environmental, Inc 7376 SW Durham Road Portland, OR 97224 RE: Former Coe Mfg. /061M116854 Enclosed are the results of analyses for work order A11 F246, which was received by the laboratory on 6/20/2011 at 2:12:00PM. Thank you for using Apex Labs. We appreciate your business and strive to provide the highest quality services to the environmental industry. If you have any questions concerning this report or the services we offer, please feel free to contact me by email at: pnerenbergaapex-labs.com, or by phone at 503-718-2323. Apex Laboratories The results in this report apply to the samples analyzed m accordance with the chain of custody document.This analytical report must he reproduced in its entirety. Afar/ n e Philip Nerenberg,Lab Director Page 1 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Sample ID laboratory ID Matrix Date Sampled Date Received AB-35,0-1 Ft A11F246-01 Soil 06/20/11 10:25 06/20/11 14:12 AB-35,2-3 Ft A11F246-02 Soil 06/20/11 10:30 06/20/11 14:12 AB-36,0-1 Ft A11F246-03 Soil 06/20/11 10:35 06/20/11 14:12 AB-36,2-2.5 Ft A11F246-04 Soil 06/20/11 10:40 06/20/11 14:12 AB-37,0-1 Ft A11F246-05 Soil 06/20/11 10:10 06/20/11 14:12 AB-37,2-2.5 Ft A11F246-06 Soil 06/20/11 10:15 06/20/11 14:12 AB-38,0-1 Ft Al1F246-07 Soil 06/20/11 10:50 06/20/11 14:12 AB-39,0-1 Ft A11F246-09 Soil 06/20/11 09:40 06/20/11 14:12 AB-39,2-3 Ft A11F246-10 Soil 06/20/11 09:45 06/20/11 14:12 AB-40,0-1 Ft A11F246-11 Soil 06/20/11 09:55 06/20/11 14:12 AB-41,0-1 Ft A11F246-13 Soil 06/20/11 09:20 06/20/11 14:12 AB-42,0-1 Ft A11F246-15 Soil 06/20/11 09:05 06/20/11 14:12 AB-43,0-1 Ft A11F246-17 Soil 06/20/11 08:50 06/20/11 14:12 AB-43,2-3 Ft A11F246-18 Soil 06/20/11 08:55 06/20/11 14:12 AB-44,0-1 Ft A11F246-19 Soil 06/20/11 11:35 06/20/11 14:12 AB-45,0-1 ft A11F246-21 Soil 06/20/11 11:20 06/20/11 14:12 AB-46,0-1 ft A11F246-23 Soil 06/20/11 11:05 06/20/11 14:12 DUP A11F246-25 Soil 06/20/11 00:00 06/20/11 14:12 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. pikir f JA, O Philip Nerenberg,Lab Director Page 2 of 22 Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M1 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting lnahte Result Ml)l. Limit Units Dilution Date Analyzed Method Notes AB-35,0-1 Ft (A11F246-01RE1) Matrix: Soil Batch: 1106279 C-07 Aroclor 1016 ND --- 39.8 ug/kg do 5 06/23/11 21:02 EPA 8082A Aroclor 1221 ND --- 39.8 " Aroclor 1232 ND -- 39.8 " Aroclor 1242 ND -- 39.8 " Aroclor 1248 ND --- 39.8 " Aroclor 1254 719 --- 39.8 " Aroclor 1260 218 --- 39.8 II Surrogate:2,4,5,6-7CMX(Surr) Recovery:92% Limits: 50-125% " Decachlombiphenyl(,Burr) 108% Limits: 55-130% " AB-35,2-3 Ft (A11F246-02RE1) Matrix: Soil Batch: 1107170 C-07,H-06 Aroclor 1016 ND --- 106 ug/kg dry 10 07/15/11 15:28 EPA 8082A Aroclor 1221 ND --- 106 Aroclor 1232 ND --- 106 " Aroclor 1242 ND --- 106 1/ Aroclor 1248 ND --- 106 " Aroclor 1254 1370 -- 106 " Aroclor 1260 188 --- 106 " " Surrogate:2,4,5,6-7CMX(Surr) Recovery:96% Limits: 50-125% " Decachlombiphenyl(Suer) 94% Limits: 55-130% " AB-36,0-1 Ft (A11F246-03RE1) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND --- 15.9 ug/kg dry 2 06/23/11 21:38 EPA 8082A Aroclor 1221 ND --- 15.9 Aroclor 1232 ND -- 15.9 " " Aroclor 1242 ND --- 15.9 " " " Aroclor 1248 ND --- 15.9 " Aroclor 1254 315 --- 15.9 " Aroclor 1260 99.8 --- 15.9 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:108% Limits: 50-125% " Decachlorbiphenyl(Sure) 124% Limits: 55-130% " AB-36,2-2.5 Ft (A11F246-04RE1) Matrix: Soil Batch: 1107170 C-07,H-06 Aroclor 1016 ND --- 99.1 ug/kg dry II) 07/15/11 15:46 EPA 8082A Aroclor 1221 ND --- 99.1 " " Aroclor 1232 ND --- 99.1 " " " Aroclor 1242 ND -- 99.1 " " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. Au, ,,: Philip Nerenberg,Lab Director Page 3 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-36,2-2.5 Ft (A11F246-04RE1) Matrix: Soil Batch:1107170 C-07,H-06 Aroclor 1248 2420 --- 99.1 ug/kg dry' 10 EPA 8082A ESTa Aroclor 1254 3530 --- 99.1 " " ESTa Aroclor 1260 312 -- 99.1 " " ESTa Surrogate:2,4,5,6-7CMX(Surr) Recovery:98% Limits: 50-125% " " Decachlorobiphenyl(Surr) 97% Limits: 55-130% " AB-37,0-1 Ft (A11F246-05RE1) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND -- 42.3 ug/kg dry 5 06/23/11 22:13 EPA 8082A Aroclor 1221 ND --- 42.3 " " Aroclor 1232 ND --- 42.3 " Aroclor 1242 ND --- 42.3 " Aroclor 1248 ND -- 42.3 " Aroclor 1254 724 --- 42.3 ^ ^ Aroclor 1260 162 --- 42.3 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:91% Limits: 50-125% " Decachlorobiphenyl(Surr) 98% Limits: 55-130% " AB-37,2-2.5 Ft (A11F246-06) Matrix: Soil Batch: 1107170 C-07,H-06,R-04 Aroclor 1016 ND --- 106 ug/kg dry 10 07/15/11 16:21 EPA 8082A Aroclor 1221 ND --- 106 Aroclor 1232 ND --- 106 ^ ,. Aroclor 1242 ND --- 106 " Aroclor 1248 ND --- 106 " " Aroclor 1254 ND --- 106 " " Aroclor 1260 ND --- 106 /I " Surrogate:2,4,5,6-7CMX(Sun) Recovery:87% Limits: 50-125% " Decachlomhiphenyl(Surr) 75% Limits: 55-130% " AB-38,0-1 Ft (A11F246-07) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND --- 7.80 ug/kg dry 1 06/22/11 19:51 EPA 8082A Aroclor 1221 ND --- 7.80 " Aroclor 1232 ND -- 7.80 '' Aroclor 1242 ND -- 7.80 " Aroclor 1248 ND -- 7.80 " Aroclor 1254 43.0 -- 7.80 " Aroclor 1260 14.1 -- 7.80 " Surrogate:2,4,5,6-TCMX(Surr) Recovery:70% Limits: 50-125% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of (PM custody document.This analytical report must be reproduced in its entirety. Philip Nerenherg,Lab Director Page 4 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-38,0-1 Ft (A11 F246-07) Matrix: Soil Batch:1106279 C-07 Surrogate:Decachlorobiphenyl(Surr) Recovery:8!% Limits: 55-130% I " EPA 8082A AB-39,0-1 Ft (A11F246-09RE1) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND -- 76.9 ug/kg dry 10 06/23/11 23:25 EPA 8082A Aroclor 1221 ND -- 76.9 Aroclor 1232 ND --- 76.9 " II Aroclor 1242 ND --- 76.9 " II Aroclor 1248 ND --- 76.9 " " Aroclor 1254 1540 --- 76.9 " Aroclor 1260 297 --- 76.9 " Surrogate:2,4,5,6-TCMX(Surr) Recovery:92% Limits: 50-125% " Decachlorobiphenyl(Surr) 101% Limits: 55-130% " AB-39,2-3 Ft (A11F246-10) Matrix: Soil Batch:1107170 C-07,H-06,R-04 Aroclor 1016 ND --- 92.9 ug/kg dry 10 07/15/11 16:39 EPA 8082A Aroclor 1221 ND --- 92.9 " " Aroclor 1232 ND -- 92.9 " " Aroclor 1242 ND --- 92.9 " " " Aroclor 1248 ND --- 92.9 " " Aroclor 1254 ND --- 92.9 " " Aroclor 1260 ND --- 92.9 " Surrogate:2,4,5,6-TCMX(Surr) Recovery:86% Limits: 50-125% " Decachlorobiphenyl(Surr) 78% Limits: 55-130% " AB-40,0-1 Ft (A11F246-11) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND --- 8.21 ug/kg dry I 06/22/11 21:02 EPA 8082A Aroclor 1221 ND -- 8.21 " Aroclor 1232 ND -- 8.21 " " " Aroclor 1242 ND -- 8.21 " " Aroclor 1248 47.1 -- 8.21 " EST Aroclor 1254 288 --- 8.21 " " EST Aroclor 1260 90.9 --- 8.21 " " EST Surrogate:2,4,5,6-TCMX(Surr) Recovery:91% Limits: 50-125% " Decachlorohiphenyl(Surr) 108% Limits: 55-130% " AB-41,0-1 Ft (A11F246-13) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND -- 8.35 ug/kg dry 1 06/22/11 21:38 EPA 8082A Aroclor 1221 ND -- 8.35 " Apex Laboratories The results an this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6 rthal Philip Nerenberg,Lab Director Page 5 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M1 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-41,0-1 Ft (A11F246-13) Matrix: Soil Batch:1106279 C-07 Aroclor 1232 ND --- 8.35 ug/kg dry 1 EPA 8082A Aroclor 1242 ND --- 8.35 " Aroclor 1248 ND --- 8.35 " Aroclor 1254 81.3 --- 8.35 " " " Aroclor 1260 36.0 --- 8.35 " " " Surrogate:2,4,5,6-TCMX(Surr) Recovery:91% Limits: 50-125% " Decachlorobiphenyl(Surr) 106% Limits: 55-130% " AB-42,0-1 Ft (A11 F246-15) Matrix: Soil Batch:1107170 C-07,H-06,R-04 Aroclor 1016 ND -- 85.7 ug/kg dry 10 07/15/11 16:57 EPA 8082A Aroclor 1221 ND --- 85.7 " " Aroclor 1232 ND -- 85.7 " Aroclor 1242 ND --- 85.7 " " Aroclor 1248 ND -- 85.7 " Aroclor 1254 226 --- 85.7 " " Aroclor 1260 ND -- 85.7 " Surrogate:2,4.5,6-7CMX(Surr) Recovery:102% Limits: 50-125% " Decachlorobiphenyl(Surr) 85% Limits: 55-130% " AB-43,0-1 Ft (A11F246-17RE1) Matrix: Soil Batch:1106279 C-07 Aroclor 1016 ND --- 82.6 ug/kg dry 10 06/24/11 00:01 EPA 8082A Aroclor 1221 ND -- 82.6 Aroclor 1232 ND --- 82.6 " Aroclor 1242 ND --- 82.6 " Aroclor 1248 2150 --- 82.6 " EST Aroclor 1254 2590 --- 82,6 " EST Aroclor 1260 370 --- 82.6 " EST Surrogate:2,4,5,6-TCMX(Surr) Recovery:97% Limits: 50-125% " Decachlorobiphenyl(Surr) 111% Limits: 55-130% " AB-43,2-3 Ft (A11F246-18) Matrix: Soil Batch:1107170 C-07,H-06,R-04 Aroclor 1016 ND --- 86.8 ug/kg dry 10 07/15/11 17:15 EPA 8082A Aroclor 1221 ND --- 86.8 Aroclor 1232 ND --- 86.8 " Aroclor 1242 ND -- 86.8 " II Aroclor 1248 ND --- 86.8 " 1/ Aroclor 1254 ND --- 86.8 " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 9).4)tt2 �d'�� Philip Nerenberg,Lab Director Page 6 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Pro j ect Number: 061 M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-43,2-3 Ft (A11 F246-18) Matrix: Soil Batch:1107170 C-07,1-1-06,R-04 Aroclor 1260 ND -- 86.8 ug/kg dry 10 " EPA 8082A Surrogate:2.4,5,6-7CMX(Surr) Recovery:96% Limits: 50-125% " " Decachlorobiphenyl(Surr) 84% Limits: 55-130% " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. (?M /J{/j�w(J qJft\ie Philip Nerenberg,Lab Director Page 7 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061 M 1 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-35,0-1 Ft (A11F246-01) Matrix: Soil Batch:1106299 Arsenic 2.72 --- 2.26 mg/kg dry 10 06/24/11 13:35 EPA 6020 Chromium 19.9 --- 2.26 Lead 48.4 --- 1.13 AB-36,0-1 Ft (A11F246-03) Matrix: Soil Batch:1106299 Arsenic ND --- 2.25 mg/kg dry 10 06/24/11 13:41 EPA 6020 Chromium 26.6 2.25 Lead 81.9 --- 1.13 " AB-37,0-1 Ft (A11F246-05) Matrix: Soil Batch:1106299 Chromium 17.4 --- 2.33 mg/kg dry 10 06/24/11 13:43 EPA 6020 Lead 41.9 --- 1.16 AB-38,0-1 Ft (A11F246-07) Matrix: Soil Batch:1106299 Arsenic ND --- 2.37 mg/kg dry 10 06/24/11 13:46 EPA 6020 Chromium 12.0 --- 2.37 Lead 35.8 --- 1.18 " IF AB-39,0-1 Ft (A11F246-09) Matrix: Soil Batch:1106299 Lead 57.2 --- 1.26 mg/kg dry 10 06/24/11 13:50 EPA 6020 Zinc 104 --- 4.77 06/29/11 10:30 AB-40,0-1 Ft (A11F246-11) Matrix: Soil Batch:1106299 Arsenic 4.61 --- 2.26 mg/kg dry 10 06/24/11 13:53 EPA 6020 Chromium 29.6 --- 2.26 Lead 78.6 --- 1.13 II AB-41,0-1 Ft (A11F246-13) Matrix: Soil Batch:1106299 Arsenic 5.77 --- 2.31 mg/kg dry 10 06/24/11 13:56 EPA 6020 Lead 25.3 --- 1.15 AB-43,0-1 Ft (A11F246-17) Matrix: Soil Batch:1106299 Arsenic 3.12 --- 2.32 mg/kg dry 10 06/24/11 14:08 EPA 6020 Lead 67.9 --- 1.16 AB-44,0-1 Ft (A11F246-19) Matrix: Soil Batch:1106299 Lead 59.4 --- 1.06 mg/kg dry 10 06/24/11 14:11 EPA 6020 AB-45.0-1 ft (A11F246-21) Matrix: Soil Batch:1106299 Lead 125 --- 1.42 mg/kg dry 10 06/24/11 14:16 EPA 6020 AB-46.0-1 ft (A11F246-23) Matrix: Soil Batch:1106299 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. eRlf, • pe,,,,9, Philip Nerenberg,Lab Director Page 8 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061 M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 A N A I NT ICAL SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Nom. AB-46,0-1 ft (A11F246-23) Matrix: Soil Batch: 1106299 Lead 75.5 --- 115 mg/kg dre 10 06/24/11 14:19 EPA 6020 DUP (A11F246-25) Matrix: Soil Batch: 1106299 Lead 107 1 -1U mg"ke do 10 06/24/11 14:22 EPA6020 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of jcustody document.This analytical report must be reproduced in its entirety. Philip Nerenberg,Lab Director Page 9 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number 061Ml16854 Reported: Portland,OR 97224 Project Manager: Joel Fledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes AB-35,0-1 Ft (A11F246-01) Matrix: Soil Batch:1106285 %Solids 87.4 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-35,2-3 Ft (A11 F246-02) Matrix: Soil Batch:1107225 %Solids 75.3 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-36,0-1 Ft (A11F246-03) Matrix: Soil Batch:1106285 %Solids 92.7 --- 1.00 %by Weight I 06/22/11 10:10 Apex SOP AB-36,2-2.5 Ft (A11F246-04) Matrix: Soil Batch:1107225 Solids 78.5 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-37,0-1 Ft (A11F246-05) Matrix: Soil Batch:1106285 %Solids 84.7 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-37,2-2.5 Ft (A11F246-06) Matrix: Soil Batch:1107225 %Solids 67.7 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-38,0-1 Ft (A11F246-07) Matrix: Soil Batch:1106285 %Solids 86.3 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-39,0-1 Ft (A11F246-09) Matrix: Soil Batch:1106285 %Solids 87.1 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-39,2-3 Ft (A11 F246-10) Matrix: Soil Batch:1107225 %Solids 76.0 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-40,0-1 Ft (A11F246-11) Matrix: Soil Batch:1106285 %Solids 86.6 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-41,0-1 Ft (A11F246-13) Matrix: Soil Batch:1106285 Solids 87.4 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-42,0-1 Ft (A11F246-15) Matrix: Soil Batch:1107225 %Solids 79.3 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-43,0-1 Ft (A11F246-17) Matrix: Soil Batch:1106285 %Solids 85.5 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP AB-43,2-3 Ft (A11F246-18) Matrix: Soil Batch:1107225 Solids 86.9 --- 1.00 %by Weight 1 07/19/11 09:20 Apex SOP AB-44,0-1 Ft (A11F246-19) Matrix: Soil Batch:1107015 %Solids 89.1 --- 1.00 %by Weight 1 07/05/11 10:04 Apex SOP AB-45.0-1 ft (A11F246-21) Matrix: Soil Batch:1106285 %Solids 78.5 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. jut r ,d Philip Nerenberg,Lab Director Page 10 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax / Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Fledge 08/08/11 13:18 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Reporting Anal to Result MDL Limit Pint, Dilution Date Analyzed Method Notes AB-46,0-1 ft (A11F246-23) Matrix: Soil Batch:1107015 0/Solids 90.1 -- 1.00 %by Weight 1 07/05/11 10:04 Apex SOP DUP (A11F246-25) Matrix: Soil Batch: 1106285 Solids 75.8 --- 1.00 %by Weight 1 06/22/11 10:10 Apex SOP Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 63)49 1104.4etd,, Philip Nerenberg,Lab Director Page 11 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 j Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result "„IZI.0 Limits RPD Limit Notes Batch 1106279-EPA 3546 Soil Blank(1106279-B1 Kll Prepared:06/21/11 10:25 Analyzed:06/22/11 16:52 (-a- EPA 8082A Aroclor 1016 ND -- 6.67 ug/kg wet 1 -- — --- --- -- -- Aroclor 1221 ND --- 6.67 ” — -- -- --- -- -- Aroclor 1232 ND -- 6.67 " — -- -- -- -- -- Aroclor 1242 ND — 6.67 " " — -- --- -- -- -- Aroclor 1248 ND — 6.67 — -- — — -- — Aroclor 1254 ND — 6.67 — — — — -- — Aroclor 1260 ND -- 6.67 " " — — -- -- -- -- Suer: 2,4,5,6-TCMX(Surr) Recovery: 92% Limits: 50-125% Dilution: Ix Decachlorobiphenyl(Suer) 95% 55-130% " LCS(1106279-BS1) Prepared:06/21/11 10:26 Analyzed:06/22/11 17:09 C-07,Q-21 EPA 8082A Aroclor 1016 251 — 10.0 ug/kg wet 1 250 — 100 40-140% — -- Aroclor 1260 274 — 10.0 " -- 110 60-130% — -- Surr: 2,4.5,6-7CMX(Surr) Recovery: 96% Limits: 50-125% Dilution: lx Decachlorobiphenyl(Sure) 98% 55-130% " Duplicate(1106279-DUP2) Prepared:06/21/11 10:25 Analyzed:06/23/11 22:49 C-07 QC Source Sample:AB-37,0-1 Ft(A11F246-05RE1) EPA 8082A Aroclor 1016 ND -- 44.5 ug/kg dry 5 -- ND -- --- --- 30% Aroclor 1221 ND -- 44.5 — ND -- --- --- 30% Aroclor 1232 ND -- 44.5 " — ND -- --- --- 30% Aroclor 1242 ND -- 44.5 " — ND -- --- --- 30% Aroclor 1248 ND -- 44.5 " --- ND -- --- --- 30% Aroclor 1254 675 -- 44.5 " " --- 724 -- --- 7 30% Aroclor 1260 157 -- 44.5 --- 162 --- --- 3 30% Sun: 2,4,5,6-TCMX(Sun) Recovery: 85% Limits: 50-125% Dilution: 5x Decachlorobiphenyl(Sun) 93% 55-130% Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. OPr' Philip Nerenberg,Lab Director Page 12 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amer Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A I) Reporting Spike Source %REC RPD Anal,te Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107170-EPA 3546 Soil Blank(1107170-B1.k1 I Prepared:07/13/11 20:45 Analyzed:07/15/11 13:41 C-07 EPA 8082A Aroclor 1016 ND -- 6.67 ug/kg wet 1 — — --- -- -- -- Aroclor 1221 ND — 6.67 • — — — — -- -- Aroclor 1232 ND -- 6.67 " — — --- -- -- -- Aroclor 1242 ND — 6.67 — — — -- -- -- Aroclor 1248 ND — 6.67 — — -- -- -- -- Aroclor 1254 ND -- 6.67 • — --- -- -- -- -- Aroclor 1260 ND -- 6.67 " — — -- -- -- -- Aroclor 1262 ND -- 6.67 — — -- -- — — Aroclor 1268 ND -- 6.67 " — — -- -- -- -- Suer: 2,4,5,6-TCMX(Surr) Recovery: 95% Limits: 50-125% Dilution: Ix Decachlorobipheny!(Sure) 87% 55-130% " LCS(1107170-BS1) Prepared:07/13/11 20:45 Analyzed:07/15/11 13:59 C-07 EPA 8082A Aroclor 1016 240 -- 10.0 ug/kg wet 1 250 --- 96 40-140% --- -- Aroclor 1260 224 -- 10.0 -- 90 60-130% --- --- Sure: 2,4,5,6-TCMX(Starr) Recovery: 97% Limits: 50-125% Dilution: Ix Decachlorobiphenyl(Surr) 93% 55-130% " Duplicate(1107170-DUP1) Prepared:07/13/11 20:45 Analyzed:07/15/11 17:33 C-07,R-04 QC Source Sample:AB-43,2-3 Ft (A 11F746-18) EPA 8082A Aroclor 1016 ND --- 77.5 ug/kg dry 10 -- ND -- -- -- 30% Aroclor 1221 ND --- 77.5 — ND — -- --- 30% Aroclor 1232 ND --- 77.5 — ND -- — --- 30% Aroclor 1242 ND -- 77.5 — ND -- — -- 30% Aroclor 1248 ND --- 77.5 — ND -- --- — 30% Aroclor 1254 ND --- 77.5 — ND -- -- -- 30% Aroclor 1260 ND -- 77.5 — ND --- -- --- 30% Sure: 2,4,5,6-TCMX(Sun) Recovery: 84% Limits: 50-125% Dilution: 10x Decachlorobiphenyl(Suer) 79% 55-130% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 019 424.6 Philip Nerenberg,Lab Director Page 13 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Cot Mfg. 7376 SW Durham Road Project Number: 061Ml16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 QUALITY CONTROL(QC)SAMPLE RESULTS Total Metals by EPA 6020(1CPMS) Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1106299-EPA 3051A Soil Blank(1106299-BLKI) Prepared:06/22/11 09:15 Analyzed:06/22/11 13:00 EPA 6020 Arsenic ND --- 2.00 mg/kg wet 10 -- — — --- -- -- Chromium ND --- 2.00 — -- — — — -- Lead ND --- 1.00 • — -- -- — -- -- LCS(1106299-BS1) Prepared:06/22/11 09:15 Analyzed:06/22/11 13:04 EPA 6020 Arsenic 49.3 -- 2.00 mg/kg wet 10 50.0 — 99 80-120% — -- Chromium 48.5 -- 2.00 " " — 97 --- -- Lead 50.0 -- 1.00 " • " -- 100 " -- -- Matrix Spike(1106299-MS2) Prepared:06/22/11 09:15 Analyzed:06/24/11 14:13 QC Source Sample:AB-44,0-1 Ft(A11F246-19) EPA 6020 Arsenic 62.6 -- 2.40 mg/kg dry 10 60.0 3.13 99 75-125% --- --- Chromium 81.9 -- 2.40 " " " 18.1 106 Lead 114 --- 1.20 " 59.4 90 " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6:3 .it,,tra.vi,st",!� t� Philip Nerenberg,Lab Director Page 14 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 QUALITY CONTROL(QC)SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Spike Source %REC RPD Analyte Result MDL Limit Units DiI. Amount Result %REC Limits RPD Limit Notes Batch 1106328-EPA 3051A Soil Blank(1106328-BLK1) Prepared:06/23/11 11:26 Analyzed:06/29/11 10:24 EPA 6020 Zinc ND -- 4.00 mg/kg wet 10 -- — -- -- -- — LCS(1106328-BS1) Prepared:06/23/11 11:26 Analyzed:06/29/11 10:27 EPA 6020 Zinc 52.2 -- 4.00 mg/kg wet 10 50.0 — 104 80-120% -- — Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 4 t'¢A� Philip Nerenberg,Lab Director Page 15 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 QUALITY CONTROL(QC)SAMPLE RESULTS Percent Dry Weight Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1106285-Total Solids(Dry Weight) Soil Duplicate(1106285-DUPI) Prepared:0621/11 11:46 Analyzed:06/22/11 10:10 QC Source Sample:AB-35,0-1 Ft(A11F246-01) Apex SOP %Solids 85.4 -- 1.00 %by Weight 1 -- 87.4 -- — 2 20% No Client related Batch QC samples analyzed for this batch. See notes page for more information. Batch 1107015-Total Solids(Dry Weight) Soil No Client related Batch QC samples analyzed for this batch. See notes page for more information. Batch 1107225-Total Solids(Dry Weight) Soil No Client related Batch QC samples analyzed for this hatch. See notes page for more information. Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 9)4 11.7.,,ipag Philip Nerenberg,Lab Director Page 16 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 SAMPLE PREPARATION INFORMATION I Polychlorinated Biphenyls by EPA 8082A 1 Prep: EPA 3546 Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: 1106279 A11F246-01RE1 Soil EPA8082A 06/20/11 10:25 06/21/11 10:25 14.39g/5mL 10g/5mL 0.70 A11F246-03RE1 Soil EPA8082A 06/20/11 10:35 06/21/11 10:25 13.59g/5mL 10g/5mL 0.74 A 1 1F246-05REI Soil EPA8082A 06/20/11 10:10 06/21/11 10:25 13.96g/5mL 10g/5mL 0.72 A11F246-07 Soil EPA8082A 06/20/11 10:50 06/21/11 10:25 14.85g/5mL 10g/5mL 0.67 A 1 1F246-09REI Soil EPA8082A 06/20/11 09:40 06/21/11 10:25 14.93g/5mL 10g/5mL 0.67 A11F246-11 Soil EPA 8082A 06/20/11 09:55 06/21/11 10:25 14.07g/5mL 10g/5mL 0.71 A11F246-13 Soil EPA 8082A 06/20/11 09:20 06/21/11 10:25 13.7g/5mL 10g/5mL 0.73 A11F246-17RE1 Soil EPA 8082A 06/20/11 08:50 06/21/11 10:25 14.16g/5mL 10g/5mL 0.71 Batch: 1107170 A 1 1F246-02RE1 Soil EPA 8082A 06/20/11 10:30 07/13/11 20:45 12.49g/5mL 10g/5mL 0.80 A 1 1 F246-04RE1 Soil EPA 8082A 06/20/11 10:40 07/13/11 20:45 12.86g/5mL 10g/5mL 0.78 A11F246-06 Soil EPA 8082A 06/20/11 10:15 07/13/11 20:45 14g/5mL 10g/5mL 0.71 A11F246-10 Soil EPA 8082A 06/20/11 09:45 07/13/11 20:45 14.16g/5mL 10g/5mL 0.71 A11F246-15 Soil EPA 8082A 06/20/11 09:05 07/13/11 20:45 14.72g/5mL 10g/5mL 0.68 A11F246-18 Soil EPA 8082A 06/20/11 08:55 07/13/11 20:45 13.25g/5mL 10g/5mL 0.76 I) Total Metals by EPA 6020(ICPMS) Prep: EPA 3051A Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: 1106299 A11F246-01 Soil EPA6020 06/20/11 10:25 06/22/11 09:15 0.506g/50mL 0.5g/50mL 0.99 A11F246-03 Soil EPA6020 06/20/11 10:35 06/22/11 09:15 0.479g/50mL 0.5g/50mL 1.04 AllF246-05 Soil EPA 6020 06/20/11 10:10 06/22/11 09:15 0.507g/50mL 0.5g/50mL 0.99 A11F246-07 Soil EPA 6020 06/20/1110:50 06/22/11 09:15 0.489g/50mL 0.5g/50mL 1.02 AllF246-09 Soil EPA 6020 06/20/11 09:40 06/22/11 09:15 0.456g/50mL 0.5g/50mL 1.10 Al 1E246-11 Soil EPA 6020 06/20/11 09:55 06/22/11 09:15 0.51g/50mL 0.5g/50mL 0.98 A11F246-13 Soil EPA 6020 06/20/11 09:20 06/22/11 09:15 0.496g/50mL 0.5g/50mL 1.01 A11F246-17 Soil EPA 6020 06/20/11 08:50 06/22/11 09:15 0.505g/50mL 0.5g/50mL 0.99 A11F246-19 Soil EPA6020 06/20/11 11:35 06/22/11 09:15 0.53g/50mL 0.5g/50mL 0.94 A11F246-21 Soil EPA6020 06/20/11 11:20 06/22/11 09:15 0.448g/50mL 0.5g/50mL 1.12 A11F246-23 Soil EPA6020 06/20/11 11:05 06/22/11 09:15 0.481g/50mL 0.5g/50mL 1.04 A11F246-25 Soil EPA 6020 06/20/11 00:00 06/22/11 09:15 0.471g/50mL 0.5g/50mL 1.06 Batch: 1106328 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6).).1,flettnite, Philip Nerenberg,Lab Director Page 17 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 SAMPLE PREPARATION INFORMATION Total Metals by EPA 6020(ICPMS) Prep: EPA 305IA Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor AllF246-09 Soil EPA 6020 06/20/11 09:40 06/23/11 11:26 0.481g/50mL 0.5g/50mL 1.04 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must he reproduced in its entirety. Oily A� Philip Nerenberg,Lab Director Page 18 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 06116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 Notes and Definitions Qualifiers: C-07 Extract has undergone Sulfuric Acid Cleanup by EPA 3665A,Sulfur Cleanup by EPA 3660B,and Florisil Cleanup by EPA 3620B in order to minimize matrix interference. EST Result reported as an Estimated Value.Estimated due to multiple aroclors present ESTa Result reported as an Estimated Value.Multiple Aroclors Present H-06 This sample was received,or the analysis requested,outside the EPA recommended holding time. Q-21 Matrix Spike results for this extraction batch are not reported due to the interfering organic compounds in the source sample Batch is accepted based on results of the Blank Spike. R-04 Reporting levels elevated due to dilution necessary for analysis. Notes and Conventions: DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis. Results listed as'wet'or without'dry'designation are not dry weight corrected. RPD Relative Percent Difference MDL If MDL is not listed,data has been evaluated to the Method Reporting Limit only. WMSC Water Miscible Solvent Correction has been applied to Results and MRLs for volatiles soil samples per EPA 8000C. Batch Unless specifically requested,this report contains only results for Batch QC derived from client samples included in this report. All QC analyses were performed with the appropriate Batch QC(including Sample Duplicates,Matrix Spikes and/or Matrix Spike Duplicates)in order to meet or exceed method and regulatory requirements.Any exceptions to this will be qualified in this report.Complete Batch QC results are available upon request. In cases where there is insufficient sample provided for Sample Duplicates and/or Matrix Spikes,a Lab Control Sample Duplicate(LCS Dup)is analyzed to demonstrate accuracy and precision of the extraction and analysis. Blank Apex assesses blank data for potential high bias down to a level equal to V2 the method reporting limit(MRL),except for conventional Policy chemistry and HCID analyses which are assessed only to the MRL.Sample results flagged with a B or B-02 qualifier are potentially biased high if they are less than ten times the level found in the blank for inorganic analyses or less than five times the level found in the blank for organic analyses. For accurate comparison of volatile results to the level found in the blank;water sample results should be divided by the dilution factor, and soil sample results should be divided by 1/50 of the sample dilution to account for the sample prep factor. Results qualified as reported below the MRL may include a potential high bias if associated with a B or B-02 qualified blank.B and B-02 qualifications are not applied to J qualified results reported below the MRL. QC results are not applicable.For example,%Recoveries for Blanks and Duplicates,%RPD for Blanks,Blank Spikes and Matrix Spikes,etc. *** Used to indicate a possible discrepency with the Sample and Sample Duplicate results when the%RPD is not available. In this case, either the Sample or the Sample Duplicate has a reportable result for this analyte,while the other is Non Detect(ND). Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6)iir nuogre Philip Nerenberg,Lab Director Page 19 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number 061 M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/08/11 13:18 8 E1 ii,■ i Elia/Ill/ Y ..-.., o 711611 IHIII °V10.411621 ' M wM /IUUUPIIU I 'x ( 4:,',...:z 'at�i tira.:7'»KI y 3 .t@ 4 YY-'f{'IY ! !IN Wit Rik..14 +yC ..gwN[YaJa .• E. Gli PS' is o +11V1w�q` Iinl•il•lu� I g co I J - sAt7 �� '■ 4 i R b NININN ....- , 430a 014100*301 wmnr esu I__ .:„. ,.., .:0 : x3L �r� ■!E; .o-nothO4 Nil! 7r�rr 4-- 41TNJA fl. 4_ = w O 1� w atati-tiwAN 5 /I ^'a Il S113k1YJ NUJ,MC)0 !!! t� 6 `- +fit 11. 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This analytical report must he reproduced in its entirety. ydrrio.„3,,,,,,,, Philip Nerenberg,Lab Director Page 20 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax ' Amec Earth and Environmental,Inc Project: Former Coe Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager Joel Eledge 08/08/11 13:18 in IIIIII■ IMIIIIII eel ...) t 11111111.11111111111 1111�.11■ 11■ ,_ ,.... 7.:�' _.x. ,■,■.i■�■■,1■•UIII■UUIIU v 1 € cdM�weatu 3 .......E : •::::1,1, Iffigiiii10116 - ..; y� � ICllsry�'lV41.,!•d fi u,r,ie.ii)a•� UM 111111 44 -d•49,,VI RED - FIRE R tZ -- '',. iSii0 ' 111111 Y, o tr. 41%414151 . Y Q .. 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K _ &1 0 n .a Z 1 +i■i i a 2 —. s... �� �. k �.t • (i1YW t o k w 'MU x 1j : Q 0 R 4 .triaY7 Q g a t 412 Qv ,� 3 y L r kJ a .. 7r 3" T � t ■, S may. i F p ~ � ~t t Apex Laboratories The results in this report apply so the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. pdpuir a Philip Nerenberg,Lab Director Page 22 of 22 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Thursday,August 18, 2011 Joel Eledge Amec Earth and Environmental, Inc 7376 SW Durham Road Portland, OR 97224 RE: COE Mfg. /061M116854 Enclosed are the results of analyses for work order A11 G085,which was received by the laboratory on 7/8/2011 at 11:20:00AM. Thank you for using Apex Labs. We appreciate your business and strive to provide the highest quality services to the environmental industry. If you have any questions concerning this report or the services we offer, please feel free to contact me by email at: pnerenberg @apex-labs.com, or by phone at 503-718-2323. Apex Laboratories The results in this report apply to the samples analyzed to accordance ssvth the chain of custody document.This analytical report must be reproduced in its entirety. ect.,4 r124,3"/ Philip Nerenberg,Lab Director Page 1 of 45 12232 S.W.Garden Place Apex Labs 'Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number. 061M116854 Reported: Portland,OR 97224 Project Manager Joel Eledge 08/18/11 11.58 ANALYTICAL REPORT FOR SAMPLES SAMPLE INFORMATION Sample ID Laboratory ID Matrix Date Sampled Date Received RRC-SS17 A11G085-01 Soil 07/07/11 14:20 07/08/11 11:20 RRC-SS18 A11G085-02 Soil 07/07/11 13:55 07/08/11 11:20 RRC-SS19 A11G085-03 Soil 07/07/11 14:05 07/08/11 11:20 RRC-SS20 A11G085-04 Soil 07/07/11 13:20 07/08/11 11:20 RRC-SS21 A11G085-05 Soil 07/07/11 13:35 07/08/11 11:20 RRC-SS22 A11G085-06 Soil 07/07/11 13:45 07/08/11 11:20 RRC-SS23 A110085-07 Soil 07/07/11 14:30 07/08/11 11:20 RRC-SS24 A110085-08 Soil 07/07/11 13:00 07/08/11 11:20 RRC-SS25 A11G085-09 Soil 07/07/11 13:10 07/08/11 11:20 RRC-SS26 A1IG085-10 Soil 07/07/11 14:45 07/08/11 11:20 RRC-SS27 A11G085-11 Soil 07/07/11 11:30 07/08/11 11:20 RRC-SS28 AIIG085-12 Soil 07/07/11 11:26 07/08/11 11:20 RRC-SS29 A11G085-13 Soil 07/07/11 09:45 07/08/11 11:20 RRC-SS30 A11G085-14 Soil 07/07/11 09:59 07/08/11 11:20 RRC-SS31 A11G085-15 Soil 07/07/11 10:10 07/08/11 11:20 RRC-SS32 A11G085-16 Soil 07/07/11 10:25 07/08/11 11:20 RRC-SS33 A11G085-17 Soil 07/07/11 09:00 07/08/11 11:20 RRC-SS34 AI1G085-18 Soil 07/07/11 10:38 07/08/11 11:20 RRC-SS35 A11G085-19 Soil 07/07/11 09:10 07/08/11 11:20 RRC-SS36 A110085-20 Soil 07/07/11 10:45 07/08/11 11:20 RRC-SS37 Al1G085-21 Soil 07/07/11 09:24 07/08/11 11:20 RRC-SS38 A110085-22 Soil 07/07/11 10:55 07/08/11 11:20 RRC-SS39 A110085-23 Soil 07/07/11 11:10 07/08/11 11:20 RRC-SS40 A11G085-24 Soil 07/07/11 15:58 07/08/11 11:20 RRC-SS41 Al1G085-25 Soil 07/07/11 15:54 07/08/11 11:20 RRC-SS42 A11G085-26 Soil 07/07/11 15:48 07/08/11 11:20 RRC-SS45 A11G085-29 Soil 07/07/11 16:24 07/08/11 11:20 RRC-SS46 A110085-30 Soil 07/07/11 16:10 07/08/11 11:20 RRC-SS47 A11G085-31 Soil 07/07/11 16:45 07/08/11 11:20 RRC-SS48 A11G085-32 Soil 07/07/11 16:51 07/08/11 11:20 RRC-SS49 A11G085-33 Soil 07/07/11 17:31 07/08/11 11:20 RRC-SS50 A11G085-34 Soil 07/07/11 17:19 07/08/11 11:20 RRC-SS51 A11G085-35 Soil 07/07/11 17:01 07/08/11 11:20 DUP A11G085-36 Soil 07/07/11 00:00 07/08/11 11:20 RRC-SS53 A110085-37 Soil 07/08/11 11:05 07/08/11 11:20 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must he reproduced in its entirety. Arkl, . Philip Nerenberg.Lab Director Page 2 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amer Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analvie Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS17 (A11G085-01) Matrix: Soil Batch:1108069 C-07,H-06 Aroclor 1016 ND 7.13 14.3 ug/kg dry 1 08/08/11 16:35 EPA 8082A Aroclor 1221 ND 7.13 14.3 Aroclor 1232 ND 7.13 14.3 " Aroclor 1242 ND 7.13 14.3 " " " Aroclor 1248 ND 7.13 14.3 " " Aroclor 1254 ND 7.13 14.3 " Aroclor 1260 21.7 7.13 14.3 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:73% Limits: 50-125% " " Q-23 Decachlorobiphenyl(Sun) 68% Limits: 55-130% " RRC-SS18 (A11G085-02) Matrix: Soil Batch: 1107170 C-07 Aroclor 1016 ND 5.60 11.2 ug/kg dry 1 07/20/11 18:36 EPA 8082A Aroclor 1221 ND 5.60 11.2 " Aroclor 1232 ND 5.60 11.2 " Aroclor 1242 ND 5.60 11.2 " Aroclor 1248 ND 5.60 11.2 " Aroclor 1254 33.0 5.60 11.2 " M-02 Aroclor 1260 25.9 5.60 11.2 " Surrogate:2,4,5,6-7C.MX(Sun) Recovery:55% Limits: 50-125% " Decachlorobiphenyl(Sun) 66% Limits: 55-130% " RRC-SS20 (A11G085-04) Matrix: Soil Batch: 1107170 C-07 Aroclor 1016 ND 7.27 14.5 ug/kg dry 1 07/20/11 18:54 EPA 8082A Aroclor 1221 ND 7.27 14.5 Aroclor 1232 ND 7.27 14.5 " Aroclor 1242 ND 7.27 14.5 II Aroclor 1248 ND 7.27 14.5 " " Aroclor 1254 23.4 7.27 14.5 " " M-02 Aroclor 1260 18.6 7.27 14.5 " M-02 Surrogate:2,4,5,6-7CMX(Surr) Recovery:78% Limits: 50-125% " Decachlorobiphenyl(Sun) 84% Limits: 55-130% " RRC-SS21 (A11G085-05) Matrix: Soil Batch: 1107170 C-07 Aroclor 1016 ND 9.04 18.1 ug/kg dry 1 07/20/11 19:29 EPA 8082A Aroclor 1221 ND 9.04 18.1 Aroclor 1232 ND 9.04 18.1 " Aroclor 1242 71.6 9.04 18.1 " EST Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. P)iiteilksii, Philip Nerenberg,Lab Director Page 3 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS I Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS21 (A11G085-05) Matrix: Soil Batch:1107170 C-07 Aroclor 1248 ND 9.04 18.1 ug/kg dry 1 EPA 8082A Aroclor 1254 230 9.04 18.1 " EST Aroclor 1260 69.4 9.04 18.1 " EST Surrogate:2,4,5.6-TCMX(Surr) Recovery:79% Limits: 50-125% " Decachlorobiphenyl(Sure) 86% Limits: 55-130% " RRC-SS22 (A11G085-06) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 8.87 17.7 ug/kg dry 1 07/20/11 19:46 EPA 8082A Aroclor 1221 ND 8.87 17.7 " Aroclor 1232 ND 8.87 17.7 " Aroclor 1242 50.3 8.87 17.7 " " EST Aroclor 1248 ND 8.87 17.7 " Aroclor 1254 89.5 8.87 17.7 EST Aroclor 1260 37.4 8.87 17.7 " EST Surrogate:2,4,5,6-7CMX(Sure) Recovery:80% Limits: 50-125% " Decachlorobiphenyl(Surr) 79% Limits: 55-130% " " RRC-SS23 (A11G085-07) Matrix: Soil Batch:1108069 C-07,H-06 Aroclor 1016 ND 22.2 44.4 ug/kg dry 1 08/08/11 16:53 EPA 8082A Aroclor 1221 ND 22.2 44.4 " " Aroclor 1232 ND 22.2 44.4 " " Aroclor 1242 42.3 22.2 44.4 " " " 1 Aroclor 1248 ND 22.2 44.4 " " Aroclor 1254 113 22.2 44.4 " Aroclor 1260 41.3 22.2 44.4 " " 7 Surrogate:2,4,5,6-7CMX(Surr) Recovery:83% Limits: 50-125% " Q-23 Decachlomhiphertyl(.Sure) 81% Limits: 55-130% " RRC-SS24 (A11G085-08) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 5.45 10.9 ug/kg dry 1 07/20/11 20:21 EPA 8082A Aroclor 1221 ND 5.45 10.9 Aroclor 1232 ND 5.45 10.9 " Aroclor 1242 ND 5.45 10.9 " Aroclor 1248 ND 5.45 10.9 " Aroclor 1254 42.8 5.45 10.9 " " M-02 Aroclor 1260 22.9 5.45 10.9 " " " M-02 Surrogate:2,4,5,6-7CMX(Suer) Recovery:69% Limits: 50-125% " Apex Labor'ator'ies The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. Oow, ,z.,,� Philip Nerenberg,Lab Director Page4of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amer Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS24 (A11G085-08) Matrix: Soil Batch:1107170 C-07 Surrogate:Decachlorobiphenyl(Surr) Recovery:67% Limits: 55-130% I EPA 8082 A RRC-SS27 (A11G085-11) Matrix: Soil Batch:1108069 C-07,H-06 Aroclor 1016 ND 24.1 48.2 ug/kg dry 1 08/08/11 17:28 EPA 8082A Aroclor 1221 ND 24.1 48.2 Aroclor 1232 ND 24.1 48.2 " Aroclor 1242 ND 24.1 48.2 " Aroclor 1248 ND 24.1 48.2 " " Aroclor 1254 95.8 24.1 48.2 " Aroclor 1260 ND 24.1 48.2 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:85% Limits: 50-125% Q-23 Decachlorobiphenyl(Surr) 76% Limits: 55-130% " RRC-SS28 (A11G085-12) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 5.80 11.6 ug/kg dry 1 07/20/11 20:39 EPA 8082A Aroclor 1221 ND 5.80 11.6 Aroclor 1232 ND 5.80 11.6 " Aroclor 1242 ND 5.80 11.6 " Aroclor 1248 ND 5.80 11.6 " " Aroclor 1254 476 5.80 11.6 " Aroclor 1260 ND 5.80 11.6 " Surrogate:2.4.5,6-7CMX(Surr) Recovery:69% Limits: 50-125% " Decachlorobiphenyl(Surr) 6!% Limits: 55-130% " RRC-SS29 (A11G085-13) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 8.01 16.0 ug/kg dry I 07/20/11 21:14 EPA 8082A Aroclor 1221 ND 8.01 16.0 Aroclor 1232 ND 8.01 16.0 " Aroclor 1242 ND 8.01 16.0 " Aroclor 1248 ND 8.01 16.0 " Aroclor 1254 25.5 8.01 16.0 " ^ M-02 Aroclor 1260 14.9 8.01 16.0 " " 1,M-02 Surrogate:2.4,5,6-7CMX(Surr) Recovery:70% Limits: 50-125% " Decachlorobiphenyl(Surr) 70% Limits: 55-130% " RRC-SS30 (A11G085-14) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 5.94 11.9 ug/kg dry I 07/20/11 21:31 EPA 8082A Aroclor 1221 ND 5.94 11.9 " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. OM fJe Philip Nerenberg,Lab Director Page 5 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS30 (A11G085-14) Matrix: Soil Batch: 1107170 C-07 Aroclor 1232 ND 5.94 11.9 ug/kg dry 1 " EPA 8082A Aroclor 1242 ND 5.94 11.9 " Aroclor 1248 ND 5.94 11.9 " Aroclor 1254 17.4 5.94 11.9 " Aroclor 1260 14.6 5.94 11.9 " Surrogate:2,4,5,6-TCMX(Surr) Recovery:62% Limits: 50-125% " Decachlorobiphenyl(Surr) 61% Limits: 55-130% " RRC-SS31 (A11G085-15) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 7.36 14.7 ug/kg dry 1 07/20/11 22.06 EPA 8082A Aroclor 1221 ND 7.36 14.7 " " Aroclor 1232 ND 7.36 14.7 " " Aroclor 1242 10.1 7.36 14.7 " " J,P-09 Aroclor 1248 ND 7.36 14.7 " Aroclor 1254 60.8 7.36 14.7 " Aroclor 1260 20.7 7.36 14.7 " ,, Surrogate:2,4,5,6-7CMX(Surr) Recovery:80% Limits: 50-125% " " Decachlorobiphenyl(Surr) 77% Limits: 55-130% " RRC-SS32 (A11G085-16) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 11.6 11.6 ug/kg dry 1 07/20/11 22:24 EPA 8082A Aroclor 1221 ND 11.6 11.6 Aroclor 1232 ND 11.6 11.6 " ,, Aroclor 1242 ND 11.6 11.6 II " If Aroclor 1248 ND 11.6 11.6 II Aroclor 1254 ND 11.6 11.6 " " Aroclor 1260 ND 11.6 11.6 " " Surrogate:2,4,5,6-TCMX(Sun) Recovery:74% Limits: 50-125% " Decachlorobiphenyl(Surr) 74% Limits: 55-130% " RRC-SS33 (A11G085-17RE1) Matrix: Soil Batch:1107170 C-07 Aroclor 1016 ND 48.5 96.9 ug/kg dry 5 07/21/11 19:10 EPA 8082A Aroclor 1221 ND 48.5 96.9 Aroclor 1232 ND 48.5 96.9 " " ,, Aroclor 1242 ND 48.5 96.9 " " Aroclor 1248 ND 48.5 96.9 " Aroclor 1254 1690 48.5 96.9 " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. PVT rigtijetA1 Philip Nerenberg,Lab Director Page 6 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS33 (A11G085-17RE1) Matrix: Soil Batch:1107170 C-07 Aroclor 1260 ND 48.5 96.9 ug/kg dry 5 " EPA 8082A Surrogate:2,4,5,6-TCMX(Surr) Recovery:93% Limits: 50-125% " Decachlorobiphenyl(Sun) 87% Limits: 55-130% " RRC-SS38 (A11G085-22) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 12.8 25.7 ug/kg dry 1 07/21/11 00:26 EPA 8082A Aroclor 1221 ND 12.8 25.7 " Aroclor 1232 ND 12.8 25.7 " " Aroclor 1242 ND 12.8 25.7 " Aroclor 1248 ND 12.8 25.7 " Aroclor 1254 23.9 12.8 25.7 " " 3,M-02 Aroclor 1260 ND 12.8 25.7 " " Surrogate:2,4,5,6-7CMX(Sure) Recovery:97% Limits: 50-125% " Decachlorobtphenyl(Sun) 94% Limits: 55-130% " RRC-SS40 (A11G085-24) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 10.8 21.7 ug/kg dry 1 07/21/11 00:43 EPA 8082A Aroclor 1221 ND 10.8 21.7 Aroclor 1232 ND 10.8 21.7 " " Aroclor 1242 ND 10.8 21.7 " " Aroclor 1248 ND 10.8 21.7 " " Aroclor 1254 42.6 10.8 21.7 " " " M-02 Aroclor 1260 34.7 10.8 21.7 " " " " M-02 Surrogate:2,4,5,6-7CMX(Surr) Recovery:86% Limits: 50-125% " Decachlorobiphenyl(Sun) 80% Limits: 55-130% " RRCSS41 (A11G085-25) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 10.7 21.5 ug/kg dry 1 07/21/11 01:18 EPA 8082A Aroclor 1221 ND 10.7 21.5 Aroclor 1232 ND 10.7 21.5 " " Aroclor 1242 18.1 10.7 21.5 " " " .1,EST Aroclor 1248 ND 10.7 21.5 " " Aroclor 1254 45.5 10.7 21.5 If EST Aroclor 1260 33.6 10.7 21.5 " " ^ EST Surrogate:2,4,5,6-TC'MX(Suer) Recovery:85% Limos: 50-125% " Decachlorobiphenyl(Sun) 75% Limits: 55-130% " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6);....Ifilimitft..d, Philip Nerenberg,Lab Director Page 7 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number 061M116854 Reported: Portland,OR 97224 Project Manager Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS42 (A11G085-26) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 10.3 20.5 ug/kg dry 1 07/21/11 01:36 EPA 8082A Aroclor 1221 ND 10.3 20.5 Aroclor 1232 ND 10.3 20.5 " " Aroclor 1242 47.6 10.3 20.5 " " EST Aroclor 1248 ND 10.3 20.5 " " Aroclor 1254 43.8 10.3 20.5 " " EST Aroclor 1260 33.1 10.3 20.5 " " " EST Surrogate:2,4,5,6-701X(Surr) Recovery:77% Limits: 50-125% " Decachlorobiphenyl(Suer) 68% Limits: 55-130% " " RRC-SS45 (A11G085-29) Matrix: Soil Batch:1108069 C-07,H-06 Aroclor 1016 ND 15.7 31.4 ug/kg dry 1 08/08/11 17:46 EPA 8082A Aroclor 1221 ND 15.7 31.4 " " Aroclor 1232 ND 15.7 31.4 " " " Aroclor 1242 ND 15.7 31.4 " Aroclor 1248 ND 15.7 31.4 " Aroclor 1254 ND 15.7 31.4 " Aroclor 1260 410 15.7 31.4 " Surrogate:2,4,5,6-7CMX(Suer) Recovery:72% Limits: 50-125% " " Q-23 Decachlorobiphenyl(Suer) 67% Limits: 55-130% " RRC-SS46 (A11G085-30) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 6.98 14.0 ug/kg dry 1 07/21/11 01:53 EPA 8082A Aroclor 1221 ND 6.98 14.0 " " Aroclor 1232 ND 6.98 14.0 " Aroclor 1242 ND 6.98 14.0 " " Aroclor 1248 ND 6.98 14.0 " Aroclor 1254 276 6.98 14.0 " Aroclor 1260 68.0 6.98 14.0 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:72% Limits: 50-125% " Decachlorobiphenyl(Suer) 62% Limits: 55-130% " RRC-SS47 (A11G085-31) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 7.57 15.1 ug/kg dry 1 07/21/11 02:11 EPA 8082A Aroclor 1221 ND 7.57 15.1 Aroclor 1232 ND 7.57 15.1 " " Aroclor 1242 ND 7.57 15.1 " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. puff ;,, Philip Nerenberg,Lab Director Page 8 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS47 (A11G085-31) Matrix: Soil Batch:1107208 C-07 Aroclor 1248 ND 7.57 15.1 ug/kg dry 1 " EPA 8082A Aroclor 1254 138 7.57 15.1 " Aroclor 1260 43.0 7.57 15.1 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:78% Limits: 50-125% " " Decachlorobiphenyl(Surr) 76% Limits: 55-130% " RRC-SS48 (A11G085-32) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 16.4 16.4 ug/kg dry 1 07/21/11 02.28 EPA 8082A Aroclor 1221 ND 16.4 16.4 " Aroclor 1232 ND 16.4 16.4 " " " " Aroclor 1242 ND 16.4 16.4 " Aroclor 1248 ND 16.4 16.4 " " Aroclor 1254 ND 16.4 16.4 " " Aroclor 1260 ND 16.4 16.4 " " Surrogate:2,4,5,6-7CMX(Sun) Recovery:84% Limits: 50-125% " " Decachlorobiphenyl(Sun) 78% Limits: 55-130% " RRC-SS49 (A11G085-33) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 8.22 16.4 ug/kg dry I 07/21/11 02:46 EPA 8082A Aroclor 1221 ND 8.22 16.4 " 0 Aroclor 1232 ND 8.22 16.4 " " Aroclor 1242 ND 8.22 16.4 " " " Aroclor 1248 ND 8.22 16.4 " " " " Aroclor 1254 ND 8.22 16.4 " " Aroclor 1260 ND 8.22 16.4 " Surrogate:2,4,5,6-TCMX(Sun-) Recovery:76% Limits: 50-125% " Decachlorobipheny!(Sun) 73% Limits: 55-130% " RRCSS50 (A11G085-34) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 8.79 17.6 ug/kg dry 1 07/21/11 03:03 EPA 8082A Aroclor 1221 ND 8.79 17.6 Aroclor 1232 ND 8.79 17.6 " Aroclor 1242 ND 8.79 17.6 " Aroclor 1248 ND 8.79 17.6 " Aroclor 1254 16.1 8.79 17.6 " " J Aroclor 1260 9.72 8.79 17.6 " " J Surrogate:2.4,5,6-7CMX(Sun) Recovery:72% Limits: 50-125% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6).9,1,12./..sei , Philip Nerenberg,Lab Director Page 9of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-5S50 (A11G085-34) Matrix: Soil Batch:1107208 C-07 Surrogate:Decachlorobiphenyl(Surr) Recovery:74% Limits: 55-130% I EPA 8082A RRC-SS51 (A11G085-35) Matrix: Soil Batch: 1107208 C-07 Aroclor 1016 ND 8.22 16.4 ug/kg dry 1 07/21/11 03:21 EPA 8082A Aroclor 1221 ND 8.22 16.4 " " " Aroclor 1232 ND 8.22 16.4 " " Aroclor 1242 ND 8.22 16.4 " ,. Aroclor 1248 ND 8.22 16.4 " " Aroclor 1254 21.6 8.22 16.4 " " ' M-02 Aroclor 1260 20.0 8.22 16.4 " M-02 Surrogate:2,4,5,6-7CMX(Burr) Recovery:87% Limits: 50-125% " Decachlorobiphenyl(Burr) 80% Limits: 55-130% " DUP (A11G085-36) Matrix: Soil Batch:1107208 C-07 Aroclor 1016 ND 7.21 14.4 ug/kg dry 1 07/21/11 03:38 EPA 8082A Aroclor 1221 ND 7.21 14.4 Aroclor 1232 ND 7.21 14.4 Pt Aroclor 1242 ND 7.21 14.4 " Aroclor 1248 ND 7.21 14.4 " Aroclor 1254 522 7.21 14.4 " Aroclor 1260 94.9 7.21 14.4 " Surrogate:2,4,5,6-7CMX(Surr) Recovery:69% Limits: 50-125% " Decachlorobipheny!(Surr) 58% Limits: 55-130% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. A:11,11)nkj-Pe'g Philip Nerenberg,Lab Director Page 10of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Reporting Anal vtc Result MDI. Limit l ruts Dilution Date Analyzed Method Notes RRC-SS46 (A11G085-30) Matrix: Soil Batch:1107114 Acenaphthene ND -- 135 uc'kedrs 10 07/12/11 14:22 EPA 8270D(SIM) Acenaphthylene ND — 135 " " Anthracene 499 --- 135 " " Benz(a)anthracene 1200 --- 135 " Benzo(a)pyrene 1060 --- 135 " Benzo(b)fluoranthene 1480 --- 135 " Benzo(k)fluoranthene 441 --- 135 " Benzo(g,h,i)perylene 737 --- 135 " " " Chrysene 1410 -- 135 " " " Dibenz(a,h)anthracene 206 -- 135 " Fluoranthene 2880 -- 135 " " Fluorene 159 --- 135 " " lndeno(1,2,3-cd)pyrene 755 -- 135 " " " " Naphthalene ND --- 135 " " " Phenanthrene 2050 --- 135 • " " " Pyrene 2300 -- 135 " " " " Surrogate:Nitrobenzene-d5(Surr) Recovery:73% Limits: 35-120% " 2-Fluorobiphenyl(Surr) 84% Limits: 45-120% " p-Terphenyl-d14(Surr) 106% Limits: 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. em,11-4,4elg Philip Nerenberg,Lab Director Page 11 of 45 P 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental.Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 j Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs) by EPA 8270D SIM Reporting Anahte Result 1101. Limit Units Dilution Date Analyzed Method Notes RRC-SS47 (A11G085-31) Matrix: Soil Batch: 1107114 Acenaphthene ND -- 39.7 ug/kg dry 2 07/12/11 14:49 EPA 8270D(SIM) Acenaphthylene ND -- 39.7 Anthracene ND -- 39.7 " " " Benz(a)anthracene ND — 39.7 " " Benzo(a)pyrene ND --- 39.7 " " Benzo(b+k)fluoranthene(s) ND -- 79.4 Q-26 Benzo(g,h,i)perylene ND -- 39.7 " " Chrysene ND -- 39.7 " Dibenz(a,h)anthracene ND -- 39.7 " Fluoranthene ND -- 39.7 " Fluorene ND -- 39.7 " Indeno(1,2,3-cd)pyrene ND -- 39.7 " Naphthalene ND -- 39.7 " Phenanthrene ND -- 39.7 " Pyrene 39.7 -- 39.7 " Surrogate:Nitrobenzene-d5(Suer) Recovery:52% Limits: 35-120% " 2-Fluorobiphenyl(Sure) 72% Limits: 45-120% " p-Terphenyl-d14(Suer) 106% Limits: 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. pp,..45.11 Philip Nerenberg,Lab Director Page 12 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental.Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M1 I6854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Reporting Anal\tc Result MUI. Limit Units Dilution Date Analyzed Method Notes RRC-SS48 (A11G085-32) Matrix: Soil Batch:1107114 R-04 Acenaphthene ND --- 96.5 ug/kg dry 5 07/12/11 15:17 EPA 8270D(SIM) Acenaphthylene ND -- 96.5 Anthracene ND -- 96.5 " " Benz(a)anthracene ND -- 96.5 " Benzo(a)pyrene ND -- 96.5 " " Benzo(b)fluoranthene ND -- 96.5 " Benzo(k)fluoranthene ND — 96.5 " " Benzo(g,h,i)perylene ND -- 96.5 " Chrysene ND -- 96.5 " " Dibenz(a,h)anthracene ND -- 96.5 " " " Fluoranthene ND -- 96.5 " " Fluorene ND -- 96.5 " " " Indeno(1,2,3-cd)pyrene ND -- 96.5 " Naphthalene ND -- 96.5 " " Phenanthrene ND -- 96.5 " Pyrene ND -- 96.5 " Surrogate:Nitrobenzene-d5(Sun) Recovery:70% Limits: 35-120% " 2-Fluorobiphenyl(Surr) 83% Limits: 45-120% " p-Terphenyldl4(Sure) 106% Limits: 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6:91f r1.2441./Petd/ Philip Nerenberg,Lab Director Page 13 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS49 (A11G085-33) Matrix: Soil Batch:1107114 R-04 Acenaphthene ND --- 205 ug/kg dry 10 07/12/11 15:44 EPA 8270D(SIM) Acenaphthylene ND -- 205 " " " Anthracene ND -- 205 " " Benz(a)anthracene ND --- 205 " Benzo(a)pyrene ND -- 205 " Benzo(b+k)fluoranthene(s) ND -- 410 Q-26 Benzo(g,h,i)perylene ND -- 205 " " Chrysene ND -- 205 " " Dibenz(a,h)anthracene ND -- 205 " Fluoranthene ND — 205 " " " Fluorene ND -- 205 " " " Indeno(1,2,3-cd)pyrene ND -- 205 " " Naphthalene ND -- 205 " " Phenanthrene ND -- 205 " " Pyrene ND --- 205 " " Surrogate:Nitrobenzene-d5(Suer) Recovery:56% Limits: 35-120% " 2-Fluorobiphenyl(Suer) 70% Limits: 45-120% " p-Terphenyl-d14(Suer) 101% Limits: 30-120% " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. Pfriviih Philip Nerenberg,Lab Director Page 14 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS50 (A11G085-34) Matrix: Soil Batch:1107114 R-04 Acenaphthene ND --- 189 ug/kg dry 10 07/12/11 16:10 EPA 8270D(SIM) Acenaphthylene ND --- 189 Anthracene ND --- 189 " Benz(a)anthracene ND --- 189 " Benzo(a)pyrene ND --- 189 " Benzo(b)fluoranthene ND --- 189 " " Benzo(k)fluoranthene ND --- 189 " " Benzo(g,h,i)perylene ND --- 189 " Chrysene ND --- 189 " Dibenz(a,h)anthracene ND --- 189 " " " Fluoranthene ND --- 189 " " " Fluorene ND --- 189 " Indeno(1,2,3-cd)pyrene ND --- 189 " Naphthalene ND --- 189 " Phenanthrene ND --- 189 " " Pyrene ND --- 189 " " " Surrogate:Nitrobenzene-d5(Suer) Recovery:65% Limits: 35-120% " 2-Fluorobiphenyl(Sure) 79% Limits: 45-120% " p-Terphenyl-d14(Suer) 102% Limits: 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 04.,lif fetiy Philip Nerenberg,Lab Director Page 15 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS51 (A11G085-35RE1) Matrix: Soil Batch:1107114 Acenaphthene 113 --- 37.2 ug/kg dry 2 07/13/11 22:37 EPA 8270D(SIM) Acenaphthylene ND --- 37.2 " " Anthracene 82.8 --- 37.2 " " " Benz(a)anthracene 110 --- 37.2 " Benzo(a)pyrene 122 -- 37.2 " Benzo(b+k)fluoranthene(s) 222 — 74.5 " " Q-26 Benzo(g,h,i)perylene 105 -- 37.2 " Chrysene 172 --- 37.2 " Dibenz(a,h)anthracene ND -- 37.2 " Fluoranthene 356 — 37.2 " Fluorene 108 — 37.2 " " " lndeno(1,2,3-cd)pyrene 94.8 -- 37.2 " Naphthalene 96.6 --- 37.2 0 " Phenanthrene 395 -- 37.2 " " Pyrene 291 -- 37.2 " " Surrogate:Nitrobenzene-d5(Surr) Recovery:64% Limits: 35-120% " " 2-Fluorobiphenyl(Surr) 78% Limits: 45-120% " p-Terphenyl-d14(Surr) 100% Limits: 30-120% " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. PP:4 no.Seig Philip Nerenberg,Lab Director Page 16 of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mtg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons (PAHs) by EPA 8270D SIM Reporting Analvte Result fvll)L Limit 1 nit, Dilution Date Analyzed Method Notes DUP (A11G085-36) Matrix: Soil Batch: 1107114 R-04 Acenaphthene ND -- 205 ug'kgdo 10 07/12/11 17:03 EPA 8270D(SIM) Acenaphthylene ND -- 205 " Anthracene ND -- 205 " " Benz(a)anthracene ND -- 205 " Benzo(a)pyrene ND -- 205 " " Benzo(b)fluoranthene ND — 205 " " Benzo(k)fluoranthene ND --- 205 " " " Benzo(g,h,i)perylene ND -- 205 " " " Chrysene ND -- 205 " " " " Dibenz(a,h)anthracene ND -- 205 " Fluoranthene ND -- 205 " Fluorene ND -- 205 " " Indeno(1,2,3-cd)pyrene ND -- 205 " Naphthalene ND -- 205 " Phenanthrene ND -- 205 " " Pyrene ND -- 205 " " " " Surrogate:Nitrobenzene-d5(Sun) Recovery:67% Limits: 35-120% " 2-Fluorobiphenyl(Surr) 78% Limits: 45-120% " " p-Terphenyl-d14(Sun) 103% Limits: 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. �J+ r 1 Philip Nerenberg,Lab Director Page 17 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M11 6854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs) by EPA 8270D SIM Reporting Anal>te Result MDI. Limit l'nits Dilution Date Analyzed Method Notes RRC-SS53 (A11G085-37) Matrix: Soil Batch: 1107114 Acenaphthene ND -- 43.5 ug/kg dry 2 07/12/11 17:29 EPA 8270D(SIM) Acenaphthylene ND — 43.5 " Anthracene ND — 43.5 " Benz(a)anthracene 46.7 -- 43.5 " Benzo(a)pyrene 53.7 --- 43.5 " " Benzo(b)Buoranthene 72.0 --- 43.5 " " Benzo(k)fluoranthene ND --- 43.5 " " Benzo(g,h,i)perylene 59.6 -- 43.5 " " Chrysene 69.4 — 43.5 " " " Dibenz(a,h)anthracene ND -- 43.5 " Fluoranthene 101 -- 43.5 " " Fluorene ND -- 43.5 " Indeno(1,2,3-cd)pyrene 47.8 -- 43.5 " " Naphthalene ND — 43.5 " Phenanthrene 70.3 — 43.5 " " Pyrene 102 -- 43.5 " " Surrogate:Nitrobenzene-d5(Surr) Recovery:63% Limits: 35-120% " " 2-Fluorobiphenyl(Surr) 79% Limits: 45-120% " " p-Terphenyl-dl4(Surr) 104% Limits: 30-120% " " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. ipprri...), Philip Nerenberg,Lab Director Page 18 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061MI16854 Reported: Portland,OR 97224 Project Manager: Joel Fledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS17 (A11G085-01) Matrix: Soil Batch:1108129 Lead 23.7 --- 1.52 mg/kg dry 10 08/05/11 16:19 EPA 6020 Zinc 76.0 --- 6.09 RRC-SS18 (A11G085-02) Matrix: Soil Batch:1107122 Lead 135 --- 1.67 mg/kg dry 10 07/12/11 13:42 EPA 6020 Zinc 235 --- 6.69 " RRC-SS19 (A11G085-03) Matrix: Soil Batch:1108129 Lead 127 --- 1.68 mg/kg dry 10 08/05/11 16:43 EPA 6020 Zinc 200 --- 6.72 RRC-SS20 (A11G085-04) Matrix: Soil Batch:1107122 Lead 131 --- 2.20 mg/kg dry 10 07/12/11 13:45 EPA 6020 Zinc 219 --- 8.81 RRC-SS21 (A11G085-05) Matrix: Soil Batch:1107122 Lead 1610 --- 2.58 mg/kg dry 10 07/12/11 13:48 EPA 6020 Zinc 1000 --- 10.3 RRC-SS22 (A11G085-06) Matrix: Soil Batch:1107122 Lead 161 --- 2.32 mg/kg dry 10 07/12/11 13:51 EPA 6020 Zinc 351 --- 9.30 RRC-SS23 (A11G085-07) Matrix: Soil Batch:1108129 Lead 107 --- 2.46 mg/kg dry 10 08/05/11 16:46 EPA 6020 Zinc 403 --- 9.86 RRC-SS24 (A11G085-08) Matrix: Soil Batch:1107122 Lead 123 --- 1.60 mg/kg dry 10 07/12/11 13:54 EPA 6020 Zinc 188 --- 6.42 RRC-SS25 (A11G085-09) Matrix: Soil Batch:1108129 Lead 102 --- 2.11 mg/kg dry 10 08/05/11 16:49 EPA 6020 Zinc 247 --- 8.43 RRC-SS26 (A11G085-10) Matrix: Soil Batch:1108129 Lead 81.5 --- 1.59 mg/kg dry 10 08/05/11 16:58 EPA 6020 Zinc 126 --- 6.38 RRC-SS27 (A11G085-11) Matrix: Soil Batch:1108129 Lead 61.2 --- 2.75 mg/kg dry 10 08/05/11 17:01 EPA 6020 Zinc 393 --- 11.0 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. ;to � �f Philip Nerenberg,Lab Director Page 19 of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M1 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS I Total Metals by EPA 6020(ICPMS) II Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS28 (A11G085-12) Matrix: Soil Batch:1107122 Lead 19.2 --- 1.60 mg/kg dry 10 07/12/11 14:16 EPA 6020 Zinc 67.8 --- 6.39 RRC-SS29 (A11G085-13) Matrix: Soil Batch:1107144 Lead 44.7 --- 2.19 mg/kg dry 10 07/13/11 15:42 EPA 6020 Zinc 304 --- 8.75 RRC-SS31 (A11G085-15) Matrix: Soil Batch:1107144 Lead 69.1 --- 2.10 mg/kg dry 10 07/13/11 15:54 EPA 6020 Zinc 279 --- 8.41 RRC-SS32 (A11G085-16) Matrix: Soil Batch:1107144 Zinc 71.4 --- 7.27 mg/kgdry 10 07/13/11 15:57 EPA6020 RRC-SS33 (A11G085-17) Matrix: Soil Batch:1107144 Lead 48.9 --- 2.45 mg/kg dry 10 07/13/11 16:00 EPA 6020 Zinc 247 --- 9.79 RRC-SS34 (A11G085-18) Matrix: Soil Batch:1107216 Lead 59.4 --- 1.70 mg/kg dry 10 07/18/11 14:53 EPA 6020 Zinc 123 --- 6.81 " B RRC-SS35 (A11G085-19) Matrix: Soil Batch:1107216 Lead 52.0 --- 2.81 mg/kg dry 10 07/18/11 14:56 EPA 6020 Zinc 335 --- 11.3 B RRC-SS36 (A11G085-20) Matrix: Soil Batch:1107216 Lead 48.1 --- 2.01 mg/kg dry 10 07/18/11 14:59 EPA 6020 Zinc 275 --- 8.05 " B RRC-SS37 (A11G085-21) Matrix: Soil Batch:1107216 Lead 106 --- 1.67 mg/kg dry 10 07/18/11 15:02 EPA 6020 Zinc 155 --- 6.69 " B RRC-SS38 (A11G085-22) Matrix: Soil Batch:1107216 Lead 47.4 --- 2.61 mg/kgdry 10 07/18/11 15:32 EPA6020 Zinc 352 --- 10.5 B RRC-SS39 (A11G085-23) Matrix: Soil Batch:1107216 Lead 42.2 --- 2.04 mg/kg dry 10 07/18/11 15:35 EPA 6020 RRC-SS40 (A11G085-24) Matrix: Soil Batch:1107216 Lead 109 --- 1.90 mg/kg dry 10 07/18/11 15:38 EPA 6020 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must he reproduced in its entirety. 6),,,i,rte g Philip Nerenberg,Lab Director Page 20 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amer Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number 061M1 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS40 (A11G085-24) Matrix: Soil Batch:1107216 Zinc 286 --- 7.60 mg/kg dry 10 EPA 6020 B RRC-5541 (A11G085-25) Matrix: Soil Batch:1107216 Lead 144 --- 1.99 mg/kg dry 10 07/18/11 15:42 EPA 6020 Zinc 310 --- 7.97 " B RRC-SS42 (A11G086-26) Matrix: Soil Batch:1107216 Lead 83.4 --- 1.97 mg/kg dry 10 07/18/11 15:45 EPA 6020 Zinc 281 --- 7.90 " B RRC-SS46 (A11G085-30) Matrix: Soil Batch:1107216 Lead 34.2 --- 1.30 mg/kg dry 10 07/18/11 15:48 EPA 6020 Zinc 269 --- 5.18 " B RRC-SS47 (A11G085-31) Matrix: Soil Batch:1107216 Lead 31.7 --- 1.74 mg/kg dry 10 07/18/11 15:51 EPA 6020 Zinc 94.0 --- 6.96 " B RRC-SS48 (A11G085-32) Matrix: Soil Batch:1107216 Lead 24.5 --- 1.85 mg/kg dry 10 07/18/11 15:54 EPA 6020 Zinc 104 --- 7.40 " B RRC-SS49 (A11G085-33) Matrix: Soil Batch:1107216 Lead 14.9 --- 1.57 mg/kg dry 10 07/18/11 16:05 EPA 6020 Zinc 133 -- 6.29 " B RRC-SS50 (A11G085-34) Matrix: Soil Batch:1107216 Lead 76.5 -- 1.69 mg/kg dry 10 07/18/11 16:08 EPA 6020 Zinc 185 --- 6.77 " B RRC-SS51 (A11G085-35) Matrix: Soil Batch:1107216 Lead 53.8 --- 1.80 mg/kg dry 10 07/18/11 16:11 EPA 6020 Zinc 170 --- 7.21 " " " B DUP (A11G085-36) Matrix: Soil Batch:1107216 Lead 24.8 --- 1.28 mg/kg dry 10 07/18/11 16:14 EPA 6020 Zinc 156 --- 5.13 " B RRC-SS53 (A11G085-37) Matrix: Soil Batch:1107269 Zinc 104 --- 6.90 mg/kg dry 10 07/20/11 14:17 EPA 6020 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. pm,11244,1tety Philip Nerenberg,Lab Director Page 21 of 45 P 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project COE Mfg. 7376 SW Durham Road Project Number: 061 M 116854 Reported: Portland,OR 97224 Project Manager Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS17 (A11G085-01) Matrix: Soil Batch:1108072 %Solids 67.0 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS18 (A11G085-02) Matrix: Soil Batch:1107108 %Solids 62.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS19 (A11G085-03) Matrix: Soil Batch:1108072 Solids 66.1 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS20 (A11G085-04) Matrix: Soil Batch:1107108 Solids 48.5 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS21 (A11G085-05) Matrix: Soil Batch:1107108 %Solids 42.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS22 (A11G085-06) Matrix: Soil Batch:1107108 %Solids 47.7 --- 1.00 %by Weight I 07/12/1111:08 Apex SOP RRC-SS23 (A11G085-07) Matrix: Soil Batch:1108072 %Solids 38.8 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS24 (A11G085-08) Matrix: Soil Batch:1107108 %Solids 64.8 --- 1.00 %by Weight I 07/12/Il 11:08 Apex SOP RRC-SS25 (A11G085-09) Matrix: Soil Batch:1108072 %Solids 49.1 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS26 (A11G085-10) Matrix: Soil Batch:1108072 %Solids 65.9 --- 1.00 %by Weight 1 08/04/Il 10:20 Apex SOP RRC-SS27 (A11G085-11) Matrix: Soil Batch:1108072 Solids 36.3 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS28 (A11G085-12) Matrix: Soil Batch:1107108 %Solids 63.2 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS29 (A11G085-13) Matrix: Soil Batch:1107108 %Solids 48.0 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP RRC-SS30 (A11G085-14) Matrix: Soil Batch:1107108 %Solids 65.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS31 (A11G085-15) Matrix: Soil Batch:1107108 Solids 51.8 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS32 (A11G085-16) Matrix: Soil Batch:1107108 %Solids 63.4 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must he reproduced in its entirety. pprrig.viteA,„ Philip Nerenberg,Lab Director Page 22 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M1I6854 j Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS33 (A11G085-17) Matrix: Soil Batch:1107108 %Solids 47.5 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS34 (A11G085-18) Matrix: Soil Batch:1107108 %Solids 63.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS35 (A11G085-19) Matrix: Soil Batch:1107108 %Solids 40.2 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP RRC-SS36 (A11G085-20) Matrix: Soil Batch:1107108 Solids 49.6 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS37 (A11G085-21) Matrix: Soil Batch:1107108 %Solids 64.0 --- I.00 %by Weight 1 07/12/11 I I:08 Apex SOP RRC-SS38 (A11G085-22) Matrix: Soil Batch:1107108 %Solids 38.8 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS39 (A11G085-23) Matrix: Soil Batch:1107108 Solids 55.3 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS40 (A11G085-24) Matrix: Soil Batch:1107108 %Solids 50.0 --- 1 00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS41 (A11G085-25) Matrix: Soil Batch:1107108 %Solids 51.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS42 (A11G085-26) Matrix: Soil Batch:1107108 %Solids 53.3 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS45 (A11G085-29) Matrix: Soil Batch:1108072 %Solids 59.8 --- 1.00 %by Weight 1 08/04/11 10:20 Apex SOP RRC-SS46 (A11G085-30) Matrix: Soil Batch:1107108 %Solids 75.5 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP RRC-SS47 (A11G085-31) Matrix: Soil Batch:1107108 %Solids 65.2 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP RRC-SS48 (A11G085-32) Matrix: Soil Batch:1107108 Solids 63.6 --- 1.00 %by Weight I 07/12/11 11:08 Apex SOP RRC-SS49 (A11G085-33) Matrix: Soil Batch:1107108 %Solids 67.4 --- 1.00 %by Weight 1 07/12/11 1 1:08 Apex SOP RRC-SS50 (A11G085-34) Matrix: Soil Batch:1107108 Apex Laboratories The results in this report apply to the samples analyzed m accordance with the chain of custody document.This analytical report must he reproduced in its entirety. O Philip Nerenberg,Lab Director Page 23 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ANALYTICAL SAMPLE RESULTS Percent Dry Weight Reporting Analyte Result MDL Limit Units Dilution Date Analyzed Method Notes RRC-SS50 (A11G085-34) Matrix: Soil Batch:1107108 %Solids 59.3 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS51 (A11G085-35) Matrix: Soil Batch:1107108 Solids 65.3 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP DUP (A11G085-36) Matrix: Soil Batch:1107108 Solids 72.0 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP RRC-SS53 (A11G085-37) Matrix: Soil Batch:1107108 Solids 61.8 --- 1.00 %by Weight 1 07/12/11 11:08 Apex SOP Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of + custody document.This analytical report must be reproduced in its entirety. Av Philip Nerenberg.Lab Director Page 24 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Spike Source %REC RPD Anal\tc Result MDL Limit Units Di1. Amount Result %REC Limits RPD Limit Notes Batch 1107170-EPA 3546 Soil Blank(1107170-BI.K i I Prepared:07/13/11 20:45 Analyzed:07/15/11 13:41 (-57 EPA 8082A Aroclor 1016 ND 3.33 6.67 ug/kg wet 1 — — — -- -- -- Aroclor 1221 ND 3.33 6.67 — — -- -- -- -- Aroclor 1232 ND 3.33 6.67 — — -- -- -- -- Aroclor 1242 ND 3.33 6.67 — — --- -- -- -- Aroclor 1248 ND 3.33 6.67 " — — — -- -- — Aroclor 1254 ND 3.33 6.67 " -- -- --- --- -- --- Aroclor 1260 ND 3.33 6.67 — — -- -- -- -- Aroclor 1262 ND 3.33 6.67 — -- -- --- -- --- Aroclor 1268 ND 3.33 6.67 " — -- -- --- Surr: 2,4,5,6-7CMX(Surr) Recovery: 95% Limits: 50-125% Dilution: Ix Decachlorobiphenyl(Surr) 87% 55-130% " LCS(1107170-BS1) Prepared:07/13/11 20:45 Analyzed:07/15/11 13:59 C-07 EPA 8082A Aroclor 1016 240 5.00 10.0 ug/kg wet 1 250 -- 96 40-140% --- --- Aroclor 1260 224 5.00 10.0 — 90 60-130% -- --- Surr: 2,4,5,6-TCMX(Surr) Recovery: 97% Limits: 50-125% Dilution: lx Decachlorobiphenyl(Surr) 93% 55-130% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6)4 Philip Nerenberg,Lab Director Page 25 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Pro�ect Number: 061 M 116854 J Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Spike Source %REC RPD A nah is Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107208-EPA 3546 Soil Blank(1107208-BLK1) Prepared:07/15/11 12:17 Analyzed:07/20/11 23:51 C-07 EPA 8082A Aroclor 1016 ND 3.33 6.67 ug/kg wet 1 -- --- --- --- --- --- Aroclor 1221 ND 3.33 6.67 -- --- --- -- --- --- Aroclor 1232 ND 3.33 6.67 - --- -- -- --- --- Aroclor 1242 ND 3.33 6.67 - -- -- --- --- --- Aroclor 1248 ND 3.33 6.67 " " Aroclor 1254 ND 3.33 6.67 - -- -- --- -- --- Aroclor 1260 ND 3.33 6.67 - -- -- -- -- --- Sun: 2,4,5,6-TCMX(Sun) Recovery: 87% Limits: 50-125% Dilution: lx Decachlotnbiphenyl(Sun) 92% 55-130% LCS(1107208-BS1) Prepared:07/15/11 12:17 Analyzed:07/21/11 00:09 C-07 EPA 8082A Aroclor 1016 240 5.00 10.0 ug/kg wet 1 250 --- 96 40-140% --- --- Aroclor 1260 223 5.00 10.0 " --- 89 60-130% --- --- Sun: 2,4.5,6-7CMX(Surr) Recovery: 94% Limits: 50-125% Dilution: Ix Decachlorobiphenyl(Sun) 91% 55-130% Duplicate(1107208-DUPI) Prepared:07/15/11 12:17 Analyzed:07/21/11 01:01 C-07 QC Source Sample: RRC-SS40(A1IG085-24) EPA 8082A Aroclor 1016 ND 11.9 23.9 ug/kg dry 1 --- ND --- --- -- 30% Aroclor 1221 ND 11.9 23.9 - ND --- -- -- 30% Aroclor 1232 ND 11.9 23.9 - ND -- -- -- 30% Aroclor 1242 ND 11.9 23.9 - ND -- -- -- 30% Aroclor 1248 ND 11.9 23.9 - ND - -- -- 30% Aroclor 1254 42.4 11.9 23.9 - 42.6 -- -- 0.7 30% M-02 Aroclor 1260 33.5 11.9 23.9 - 34.7 - -- 4 30% M-02 Suer: 2.4.5,6-TCMX(Sun) Recovery: 89% Limits: 50-125% Dilution: lx Decachlorobiphenyl(Sun) 81% 55-130% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. PRIV ne4Vii‘e'y Philip Nerenberg,Lab Director Page 26 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amer Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Fledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil Amount Result %REC Limits RPD Limit Notes Batch 1108069-EPA 3546 Soil Blank(1108069-BLK1) Prepared:08/03/11 08:48 Analyzed:08/08/11 11:56 C-07 EPA 8082A Aroclor 1016 ND 3.33 6.67 ug/kg wet 1 -- - - -- - --- Aroclor 1221 ND 3.33 6.67 - - - -- -- --- Aroclor 1232 ND 3.33 6.67 - - -- -- - -- Aroclor 1242 ND 3.33 6.67 - - - - -- -- Aroclor 1248 ND 3.33 6.67 " - -- -- --- -- -- Aroclor 1254 ND 3.33 6.67 - -- --- -- --- -- Aroclor 1260 ND 3.33 6.67 - -- -- -- -- -- Aroclor 1262 ND 3.33 6.67 - -- -- --- -- -- Aroclor 1268 ND 3.33 6.67 " - -- - -- -- - Surr: 2,4,5,6-TCMX(Surr) Recovery: 89% Limits: 50-125% Dilution: Ix Decachlorobiphenyl(.urr) 79% 55-130% " LCS(1108069-BSI) Prepared:08/03/11 08:48 Analyzed:08/08/11 12:14 C-07 EPA 8081A Aroclor 1016 225 5.00 10.0 ug/kg wet 1 250 -- 90 40-140% --- -- Aroclor 1260 207 5.00 10.0 " --- 83 60-130% -- -- Suer: 2.4,5,6-TCMX(Surr) Recovery: 93% Limits: 50-125% Dilution: lx Decachlorobiphenyl(Burr) 85% 55-130% " Duplicate(1108069-DUP1) Prepared:08/03/11 08:48 Analyzed:08/08/11 17:10 C-07 QC Source Sample: RRC-SS23(AIIG085-07) EPA 8082A Aroclor 1016 ND 23.0 46.0 ug/kg dry 1 -- ND -- --- --- 30% Aroclor 1221 ND 23.0 46.0 " - ND -- -- --- 30% Aroclor 1232 ND 23.0 46.0 " " --- ND --- -- -- 30% Aroclor 1242 45.9 23.0 46.0 " --- 42.3 --- -- 8 30% .1 Aroclor 1248 ND 23.0 46.0 " -- ND --- -- -- 30% Aroclor 1254 114 23.0 46.0 " " --- 113 --- -- 0.9 30% Aroclor 1260 37.4 23.0 46.0 " -- 41.3 --- --- 10 30% 1 Suer: 2,4,5,6-TC.MX(Surr) Recovery: 85% Limits: 50-125% Dilution: lx Q-23 Decachlorobiphenyl(Sure) 89% 55-130% " Matrix Spike(1108069-MSI) Prepared:08/03/11 08:48 Analyzed:08/08/11 18:04 C-07 QC Source Sample: RRC-SS45 (A11G085-29) Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of 'rfryj/'�y''I//H{� /�. custody document.This analytical report must be reproduced in its entirety. V! Y4/ J e 0 Philip Nerenberg,Lab Director Page 27 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061 M 116854 j Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polychlorinated Biphenyls by EPA 8082A Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1108069-EPA 3546 Soil Matrix Spike(1108069-MS1) Prepared:08/03/11 08:48 Analyzed:08/08/11 18:04 C-07 QC Source Sample: RRC-SS45 (A11G085-29) EPA 8082A Aroclor 1016 626 14.2 28.4 ug/kg dry 1 711 ND 88 40-140% — -- Aroclor 1260 1050 142 28.4 410 90 60-130% — -- Suer: 2,4,5,6-TCMX(Sure) Recovery: 94% Limits: 50-125% Dilution: 1x Q-23 Decachlorobiphenyl(Suer) 86% 55-130% Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of �j custody document.This analytical report must be reproduced in its entirety. ydr y Philip Nerenberg,Lab Director Page 28 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fa: A mec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs) by EPA 8270D SIM Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil Amount Result %REC Limits RPD Limit Notes Batch 1107114-EPA 3546 Soil Blank(1107114-BLK2) Prepared:07/11/11 09:50 Analyzed:07/13/11 13:20 EPA 8270D(SIM) Acenaphthene ND -- 6.67 ug/kg wet 1 — — -- — -- -- Acenaphthylene ND --- 6.67 — -- — — — --- Anthracene ND -- 6.67 — -- -- — -- -- Benz(a)anthracene ND --- 6.67 — -- — — -- --- Benzo(a)pyrene ND -- 6.67 — — --- — -- -- Benzo(b)fluoranthene ND -- 6.67 — -- — -- -- -- Benzo(k)fluoranthene ND -- 6.67 — -- -- -- -- — Benzo(b+k)fluoranthene(s) ND — 13.3 — -- — — -- — Benzo(g,h,i)perylene ND -- 6.67 --- -- — — -- — Chrysene ND -- 6.67 — -- — — — — Dibenz(a,h)anthracene ND -- 6.67 — — --- -- -- — Fluoranthene ND -- 6.67 — -- --- --- -- -- Fluorene ND -- 6.67 -- --- --- --- -- -- Indeno(1,2,3-cd)pyrene ND -- 6.67 --- --- --- --- -- --- Naphthalene ND -- 6.67 --- --- --- --- -- -- Phenanthrene ND -- 6.67 --- --- --- -- --- -- Pyrene ND -- 6.67 --- --- --- --- --- --- Sun: Nitrobenzene-d5(Burr) Recovery: 83% Limits: 35-120% Dilution: lx 2-Fluorobiphenyl(Sun) 86% 45-120% p-Terphenyldl4(Sure) 111% 30-120% LCS(1107114-BSI) Prepared:07/11/11 09:50 Analyzed:07/11/1122:14 EPA 8270D(SIM) Acenaphthene 933 -- 10.0 ug/kg wet 1 1000 — 93 45-125% --- --- Acenaphthylene 864 -- 10.0 " -- 86 --- --- Anthracene 952 -- 10.0 -- 95 55-125% -- --- Benz(a)anthracene 941 -- 10.0 -- 94 50-125% --- --- Benzo(a)pyrene 1060 -- 10.0 -- 106 --- -- Benzo(b)fluoranthene 1020 -- 10.0 " --- 102 45-125% --- -- Benzo(k)fluoranthene 1100 -- 10.0 --- 110 --- -- Benzo(b+k)fluoranthene(s) 2120 -- 20.0 2000 --- 106 --- --- Benzo(g,h,i)perylene 1070 -- 10.0 1000 --- 107 40-125% Chrysene 1000 -- 10.0 -- 100 55-125% -- -- Dibenz(a,h)anthracene 1070 — 10.0 " -- 107 40-125% — -- Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. e91.41f)rthev)ise4 ,/ Philip Nerenberg,Lab Director Page 29 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107114-EPA 3546 Soil LCS(1107114-BSI) Prepared:07/11/11 09:50 Analyzed:07/11/11 22:14 Fluoranthene 971 -- 10.0 ug/kg wet " -- 97 55-125% -- Fluorene 871 — 10.0 " • -- 87 50-125% — -- Indeno(I,2,3-cd)pyrene 916 — 10.0 " — 92 40-125% — — I-Methylnaphthalene 778 -- 10.0 • — 78 45-125% — — 2-Methylnaphthalene 782 -- 10.0 " ▪ — 78 -- -- Naphthalene 783 -- 10.0 " • -- 78 40-125% -- Phenanthrene 931 -- 10.0 " " ▪ -- 93 50-125% -- -- Pyrene 938 -- 10.0 " • — 94 45-125% — -- Sure: Nitrobenzene415(Surr) Recovery: 85% Limits: 35-120% Dilution: Is 2-Fluorobiphenyl(Burr) 75% 45-120% " p-Terphenyl-d14(Surr) 101% 30-120% " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6Mr Philip Nerenberg,Lab Director Page 30 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) . Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107122-EPA 3051A Soil Blank(1107122-BLKI) Prepared:07/11/11 14:23 Analyzed:07/12/11 12:02 EPA 6020 Lead ND --- 1.00 mg/kg wet 10 -- -- --- — --- -- Zinc ND --- 4.00 " — --- --- --- -- -- LCS(1107122-BS1) Prepared:07/11/11 14:23 Analyzed:07/12/11 12:05 EPA 6020 Lead 48.9 --- 1.00 mg/kg wet 10 50.0 -- 98 80-120% -- --- Zinc 48.6 --- 4.00 " -- 97 -- --- Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6).My) n t Philip Nerenberg,Lab Director Page 31 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental.Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107144-EPA 3051A Soil Blank(1107144-BLKI) Prepared:07/13/11 11:19 Analyzed:07/13/11 15:36 EPA 6020 Lead ND --- 1.00 mg/kg wet 10 -- --- -- -- -- --- Zinc ND --- 4.00 — --- --- -- -- -- LCS(1107144-BS1) Prepared:07/13/11 11:19 Analyzed:07/13/11 15:39 EPA 6020 Lead 49.0 -- 1.00 mg/kg wet 10 50.0 — 98 80-120% -- --- Zinc 49.6 -- 4.00 " " -- 99 " --- --- Duplicate(1107144-DUP1) Prepared:07/13/11 11:19 Analyzed:07/13/11 16:03 QC Source Sample: RRC-SS33 (A116085-17) EPA 6020 Lead 41.1 --- 2.31 mg/kg dry 10 — 48.9 -- -- 17 40% Zinc 221 -- 9.23 " — 247 -- -- 11 40% Matrix Spike(1107144-MS1) Prepared:07/13/11 11:19 Analyzed:07/13/11 16:06 QC Source Sample: RRC-SS33 (A11GO8S-17) EPA 6020 Lead 142 -- 2.11 mg/kg dry 10 106 48.9 88 75-125% — -- Zinc 321 -- 8.45 " 247 70 " -- — Q-01 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. £P94 t Philip Nerenberg,Lab Director Page 32 of 45 Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS I Total Metals by EPA 6020(ICPMS) Q Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107216-EPA 3051A Soil Blank(1107216-B1.KI) Prepared:07/18/11 08:58 Analyzed:07/18/11 14:28 EPA 6020 Lead NI) --- 1.00 mg/kg wet 10 -- --- --- -- -- — Zinc 4.09 --- 4.00 — -- --- — -- — B LCS(1107216-BS1) Prepared:07/18/11 08:58 Analyzed:07/18/11 14:31 EPA 6020 Lead 47.5 --- 1.00 mg/kg wet 10 50.0 — 95 80-120% — -- Zinc 49.7 --- 4.00 -- 99 -- -- B Duplicate(1107216-DUPI) Prepared:07/18/11 08:58 Analyzed:07/18/11 15:05 QC Source Sample: RRC-SS37(A11G085-21) EPA 6020 Lead 109 -- 1.82 mg/kg dry 10 — 106 -- — 3 40% Zinc 158 -- 7.27 " — 155 — -- 2 40% B Matrix Spike(1107216-MS1) Prepared:07/18/11 08:58 Analyzed:07/18/11 15:29 QC Source Sample: RRC-SS37(A11G085-21) EPA 6020 Lead 169 --- 1.46 mg/kg dry 10 72.9 106 86 75-125% --- --- Zinc 224 --- 5.83 155 95 --- B Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. i?ft4 Y ante Philip Nerenberg,Lab Director Page 33 of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Total Metals by EPA 6020(ICPMS) Reporting Spike Source %REC RPD Analyte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107269-EPA 3051A • Soil Blank(1107269-BLK1) Prepared:07/20/11 08'59 Analyzed:07/20/11 11:53 EPA 6020 Zinc ND -- 4.00 mg/kg wet 10 -- — -- -- -- -- LCS(1107269-BSI) Prepared:07/20/11 08:59 Analyzed:07/20/11 11:56 EPA 6020 Zinc 49.9 --- 4.00 mg/kg wet 10 50.0 — 100 80-120% --- --- Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6)).4 Philip Nerenberg,Lab Director Page 34 of 45 Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS I Total Metals by EPA 6020(ICPMS) I Reporting Spike Source %REC RPD Anakte Result MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1108129 -EPA 3051A Soil Blank(1108129-81.1:1) Prepared:08/05/11 08:54 Analyzed:08/05/11 16:13 EPA 6020 Lead NI) --- 1.00 mg/kg wet 10 -- -- -- -- --- -- Zinc ND --- 4.00 — -- -- -- -- -- LCS(1108129-BSI) Prepared:08/05/11 08:54 Analyzed:08/05/11 16:15 EPA 6020 Lead 47.3 --- 1.00 mg/kg wet 10 50.0 --- 95 80-120% --- --- Zinc 49.2 --- 4.00 " " -- 98 --- --- Duplicate(1108129-DUPI) Prepared:08/05/11 08:54 Analyzed:08/05/11 16:52 QC Source Sample: RRC-SS25 (A11G085-09) EPA 6020 Lead 133 -- 2.24 mg/kg dry 10 -- 102 -- --- 26 40% Zinc 266 --- 8.97 " " -- 247 -- --- 7 40% Matrix Spike(1108129-MSI) Prepared:08/05/11 08:54 Analyzed:08/05/11 16:55 QC Source Sample: RRC-SS25 (A11G085-09) EPA 6020 Lead 218 -- 1.94 mg/kg dry 10 96.8 102 119 75-125% --- --- Zinc 339 --- 7.74 247 95 " Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 61p f,A Philip Nerenberg,Lab Director Page 35 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 QUALITY CONTROL(QC)SAMPLE RESULTS Percent Dry Weight Reporting Spike Source %REC RPD Analyte Re,uIt MDL Limit Units Dil. Amount Result %REC Limits RPD Limit Notes Batch 1107108-Total Solids(Dry Weight) Soil Duplicate(1107108-DUP7) Prepared:07/11/11 08:44 Analyzed:07/12/11 11:08 QC Source Sample: RRC-SSSO (A11G085-34) Apes SOP %Solids 75.0 -- 1.00 %by Weight 1 — 59.3 -- -- 23 20% (1-04 No Client related Batch QC samples analyzed for this batch. See notes page for more information. Batch 1108072-Total Solids(Dry Weight) Soil Duplicate(1108072-DUPI) Prepared:08/03/11 10:18 Analyzed:08/04/11 10:20 QC Source Sample: RRC-SS27 (A11G085-11) Apex SOP %Solids 34.6 --- 1.00 %by Weight 1 --- 36.3 -- --- 5 20% No Client related Batch QC samples analyzed for this batch. See notes page for more information. Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. eLf. r Philip Nerenberg,Lab Director Page 36 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 06116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 SAMPLE PREPARATION INFORMATION (I Polychlorinated Biphenyls by EPA 8082A I Prep: EPA 3546 Sample Default RI Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: 1107170 A11G085-02 Soil EPA 8082A 07/07/11 13:55 07/13/11 20:45 14.4g/5mL 10g/5mL 0.69 A11G085-04 Soil EPA 8082A 07/07/11 13:20 07/13/11 20:45 14.18g/5mL lOg/5mL 0.71 A11G085-05 Soil EPA 8082A 07/07/11 13:35 07/13/11 20:45 13.17g/5mL 10g/5mL 0.76 A11G085-06 Soil EPA8082A 07/07/11 13:45 07/13/11 20:45 11.82g/5mL 10g/5mL 0.85 A11G085-08 Soil EPA 8082A 07/07/11 13:00 07/13/11 20:45 14.17g/5mL 10g/5mL 0.71 A1 1G085-12 Soil EPA 8082A 07/07/11 11:26 07/13/11 20:45 13.64g/5mL 10g/5mL 0.73 A11G085-13 Soil EPA 8082A 07/07/11 09:45 07/13/11 20:45 13.01g/5mL l0g/5mL 0.77 A11G085-14 Soil EPA 8082A 07/07/11 09:59 07/13/11 20:45 12.95g/5mL 10g/5mL 0.77 A11G085-15 Soil EPA 8082A 07/07/11 10:10 07/13/11 20:45 13.12g/5mL 10g/5mL 0.76 A11G085-16 Soil EPA 8082A 07/07/11 10:25 07/13/11 20:45 13.61g/5mL lOg/5mL 0.74 A11G085-17REI Soil EPA 8082A 07/07/11 09:00 07/13/11 20:45 10.86g/5mL 10g/5mL 0.92 Batch: 1107208 Al1GO85-22 Soil EPA8082A 07/07/11 10:55 07/15/11 12:17 10.03g/5mL 10g/5mL 1.00 AlIG085-24 Soil EPA8082A 07/07/11 15:58 07/15/11 12:17 9.23g/5mL 10g/5mL 1.08 A11G085-25 Soil EPA8082A 07/07/11 15:54 07/15/11 12:17 9.14g/5mL 10g/5mL 1.09 A 11 G085-26 Soil EPA 8082A 07/07/11 15:48 07/15/11 12:17 9.14g/5mL l0g/5mL 1.09 A11G085-30 Soil EPA8082A 07/07/11 16:10 07/15/11 12:17 9.49g/5mL 10g/5mL 1.05 AI1G085-31 Soil EPA8082A 07/07/11 16:45 07/15/11 12:17 10.13g/5mL 10g/5mL 0.99 A11G085-32 Soil EPA8082A 07/07/11 16:51 07/15/11 12:17 9.56g/5mL 10g/5mL 1.05 A11G085-33 Soil EPA8082A 07/07/11 17:31 07/15/11 12:17 9.03g/5mL 10g/5mL 1.11 A11G085-34 Soil EPA8082A 07/07/11 17:19 07/15/11 12:17 9.59g/5mL l0g/5mL 1.04 A11G085-35 Soil EPA 8082A 07/07/11 17:01 07/15/11 12:17 9.31g/5mL 10g/5mL 1.07 A11G085-36 Soil EPA 8082A 07/07/11 00:00 07/15/11 12:17 9.63g/5mL 10g/5mL 1.04 Batch: 1108069 Al1G085-01 Soil EPA 8082A 07/07/11 14:20 08/03/11 08:48 10.47g/5mL 10g/5mL 0.96 A11G085-07 Soil EPA 8082A 07/07/11 14:30 08/03/11 08:48 5.81g/5mL 10g/5mL 1.72 A11G085-11 Soil EPA8082A 07/07/11 11:30 08/03/11 08:48 5.71g/5mL 10g/5mL 1.75 A11G085-29 Soil EPA 8082A 07/07/11 16:24 08/03/11 08:48 5.33g/5mL 10g/5mL 1.88 I Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM I Prep: EPA 3546 Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: 1107114 Apex Laboratories The results in this report apply to the.samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 6)).1?fJeA Philip Nerenberg,Lab Director Page 37 of45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number 061M1 6854 j Reported: Portland,OR 97224 Project Manager Joel Eledge 08/18/11 11:58 SAMPLE PREPARATION INFORMATION Polyaromatic Hydrocarbons(PAHs)by EPA 8270D SIM Prep: EPA 3546 Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A11G085-30 Soil EPA 8270D(SIM) 07/07/11 16:10 07/11/11 09:50 9.84g/5mL l0g/5mL 1.02 A110085-31 Soil EPA 8270D(SIM) 07/07/11 16:45 07/11/11 09:50 7.728g/5mL l0g/5mL 1.29 A11G085-32 Soil EPA 8270D(SIM) 07/07/11 16:51 07/11/11 09:50 8.146g/5mL 10g/5mL 1.23 A11G085-33 Soil EPA 8270D(SIM) 07/07/11 17:31 07/11/11 09:50 7.245g/5mL 10g/5mL 1.38 Al 1G085-34 Soil EPA 8270D(SIM) 07/07/11 17:19 07/11/11 09:50 8.946g/5mL IOg/5mL 1.12 A11G085-35RE1 Soil EPA 8270D(SIM) 07/07/11 17:01 07/11/11 09:50 8.227g/5mL 10g/5mL 1.22 A11G085-36 Soil EPA 8270D(SIM) 07/07/11 00:00 07/11/11 09:50 6.785g/5mL 10g/5mL 1.47 A11G085-37 Soil EPA 8270D(SIM) 07/08/11 11:05 07/11/11 09:50 7.433g/5mL 10g/5mL 1.35 Total Metals by EPA 6020(ICPMS) Prep: EPA 3051A Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor Batch: 1107122 A11G085-02 Soil EPA6020 07/07/11 13:55 07/11/11 14:23 0.482g/50mL 0.5g/50mL 1.04 A11G085-04 Soil EPA6020 07/07/11 13:20 07/11/11 14:23 0.468g/50mL 0.5g/50mL 1.07 A11G085-05 Soil EPA6020 07/07/11 13:35 07/11/11 14:23 0.461g/50mL 0.5g/50mL 1.08 A11G085-06 Soil EPA6020 07/07/11 13:45 07/11/11 14:23 0.451g/50mL 0.5g/50mL 1.11 A11G085-08 Soil EPA6020 07/07/11 13:00 07/11/11 14:23 0.481g/50rnL 0.5g/50mL 1.04 A11G085-12 Soil EPA6020 07/07/11 11:26 07/11/11 14:23 0.495g/50mL 0.5g/50mL 1.01 Batch: 1107144 Al 1G085-13 Soil EPA 6020 07/07/11 09:45 07/13/11 11:19 0.476g/50mL 0.5g/50mL 1.05 AIIG085-15 Soil EPA6020 07/07/11 10:10 07/13/11 11:19 0.459g/50mL 0.5g/50mL 1.09 A11G085-16 Soil EPA6020 07/07/11 10:25 07/13/11 11:19 0.434g/50mL 0.5g/50mL 1.15 Al 1 G085-17 Soil EPA 6020 07/07/11 09:00 07/13/11 11:19 0.43g/50mL 0.5g/50mL 1.16 Batch: 1107216 A11G085-18 Soil EPA6020 07/07/11 10:38 07/18/11 08:58 0.466g/50mL 0.5g/50mL 1.07 AIIG085-19 Soil EPA6020 07/07/11 09:10 07/18/11 08:58 0.442g/50mL 0.5g/50mL 1.13 A1 1G085-20 Soil EPA6020 07/07/11 10:45 07/18/11 08:58 0.501g/50mL 0.5g/50mL 1.00 AllG085-21 Soil EPA 6020 07/07/11 09:24 07/18/11 08:58 0.467g/50mL 0.5g/50mL 1.07 A11G085-22 Soil EPA 6020 07/07/11 10:55 07/18/11 08:58 0.493g/50mL 0.5g/50mL 1.01 A11G085-23 Soil EPA6020 07/07/11 11:10 07/18/11 08:58 0.443g/50mL 0.5g/50mL 1.13 A11G085-24 Soil EPA 6020 07/07/11 15:58 07/18/11 08:58 0.526g/50mL 0.5g/50mL 0.95 AI1 G085-25 Soil EPA 6020 07/07/11 15:54 07/18/11 08:58 0.492g/50mL 0.5g/50mL 1.02 A1 1G085-26 Soil EPA 6020 07/07/11 15:48 07/18/11 08:58 0.475g/50mL 0.5g/50mL 1.05 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. rix el Philip Nerenberg,Lab Director Page 38 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061 M l 16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 SAMPLE PREPARATION INFORMATION Total Metals by EPA 6020(ICPMS) Prep: EPA 3051A Sample Default RL Prep Lab Number Matrix Method Sampled Prepared Initial/Final Initial/Final Factor A11G085-30 Soil EPA 6020 07/07/11 16:10 07/18/11 08:58 0.511g/50mL 0.5g/50mL 0.98 A11G085-31 Soil EPA 6020 07/07/11 16:45 07/18/11 08:58 0.441g/50mL 0.5g/50mL 1.13 AllG085-32 Soil EPA6020 07/07/11 16:51 07/18/11 08:58 0.4252/50mL 0.5g/50mL 1.18 A11G085-33 Soil EPA6020 07/07/11 17:31 07/18/11 08:58 0.472g/50mL 0.5g/50mL 1.06 A11G085-34 Soil EPA6020 07/07/11 17:19 07/18/11 08:58 0.498g/50mL 0.5g/50mL 1.00 A11G085-35 Soil EPA 6020 07/07/11 17:01 07/18/11 08:58 0.425g/50mL 0.5g/50mL 1.18 A11G085-36 Soil EPA 6020 07/07/11 00:00 07/18/11 08:58 0.542g/50mL 0.5g/50mL 0.92 Batch: 1107269 A11G085-37 Soil EPA 6020 07/08/11 11:05 07/20/11 08:59 0.469g/50mL 0.5g/50mL 1.07 Batch: 1108129 A11G085-01 Soil EPA6020 07/07/11 14:20 08/05/11 08:54 0.49g/50mL 0.5g/50mL 1.02 A11 G085-03 Soil EPA 6020 07/07/11 14:05 08/05/11 08:54 0.45g/50mL 0.5g/50mL 1.11 A11G085-07 Soil EPA 6020 07/07/11 14:30 08/05/11 08:54 0.523g/50mL 0.5g/50mL 0.96 A11G085-09 Soil EPA 6020 07/07/11 13:10 08/05/11 08:54 0.483g/50mL 0.5g/50mL 1.04 A11G085-10 Soil EPA 6020 07/07/11 14:45 08/05/11 08:54 0.476g/50mL 0.5g/50mL 1.05 A11G085-11 Soil EPA6020 07/07/11 11:30 08/05/11 08:54 0.5g/50mL 0.5g/50mL 1.00 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must he reproduced in its entirety. t > t;g Philip Nerenberg,Lab Director Page 39 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061 M 116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 Notes and Definitions Qualifiers: B Analyte detected in an associated blank at a level above the MRL.(See Notes and Conventions below.) C-07 Extract has undergone Sulfuric Acid Cleanup by EPA 3665A,Sulfur Cleanup by EPA 3660B,and Florisil Cleanup by EPA 3620B in order to minimize matrix interference. EST Result reported as an Estimated Value.Multiple aroclors present H-06 This sample was received,or the analysis requested,outside the EPA recommended holding time J Estimated Result. Result detected below the lowest point of the calibration curve,but above the specified MDL. M-02 Due to matrix interference,this analyte cannot be accurately quantified. The reported result is estimated. P-09 Due to weathering and/or unknown Aroclor pattern,the sample does not fully match the pattern of the standard used for calibration. Results are estimated based on the closest calibrated Aroclor. Q-01 Percent recovery and/or RPD is outside acceptance limits. Q-04 Percent recovery and/or RPD is outside control limits due to a non-homogeneous sample matrix. Q-23 Recovery of Continuing Calibration Verification sample above upper control limit for this analyte. Data is likely biased high. Q-26 Peak separation for Benzo(b)and Benzo(k)fluoranthenes does not meet method specified criteria. Reported result includes the combined area of the two isomers and should be considered the total of Benzo(b+k)Fluoranthenes. R-04 Reporting levels elevated due to dilution necessary for analysis. Notes and Conventions: DET Analyte DETECTED ND Analyte NOT DETECTED at or above the reporting limit NR Not Reported dry Sample results reported on a dry weight basis. Results listed as'wet'or without'dry'designation are not dry weight corrected. RPD Relative Percent Difference MDL If MDL is not listed,data has been evaluated to the Method Reporting Limit only WMSC Water Miscible Solvent Correction has been applied to Results and MRLs for volatiles soil samples per EPA 8000C. Batch Unless specifically requested,this report contains only results for Batch QC derived from client samples included in this report. All QC analyses were performed with the appropriate Batch QC(including Sample Duplicates,Matrix Spikes and/or Matrix Spike Duplicates)in order to meet or exceed method and regulatory requirements.Any exceptions to this will be qualified in this report.Complete Batch QC results are available upon request. In cases where there is insufficient sample provided for Sample Duplicates and/or Matrix Spikes,a Lab Control Sample Duplicate(LCS Dup)is analyzed to demonstrate accuracy and precision of the extraction and analysis. Blank Apex assesses blank data for potential high bias down to a level equal to 1/2 the method reporting limit(MRL),except for conventional Policy chemistry and HCID analyses which are assessed only to the MRL.Sample results flagged with a B or B-02 qualifier are potentially biased high if they are less than ten times the level found in the blank for inorganic analyses or less than five times the level found in the blank for organic analyses. For accurate comparison of volatile results to the level found in the blank;water sample results should be divided by the dilution factor, and soil sample results should be divided by 1/50 of the sample dilution to account for the sample prep factor. Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in as entirety. ouf, Philip Nerenberg,Lab Director Page 40 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 Results qualified as reported below the MRL may include a potential high bias if associated with a B or B-02 qualified blank.B and B-02 qualifications are not applied to J qualified results reported below the MRL. — QC results are not applicable.For example,%Recoveries for Blanks and Duplicates,%RPD for Blanks,Blank Spikes and Matrix Spikes,etc. *** Used to indicate a possible discrepency with the Sample and Sample Duplicate results when the%RPD is not available. In this case, either the Sample or the Sample Duplicate has a reportable result for this analyte,while the other is Non Detect(ND). Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. ppr . l Philip Nerenberg,Lab Director Page 41 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061MI16854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 _:� M�.Ntt/ 1 _ t e 2 i,,1 .Nautorte.4 1 c __._ 1 - II NMI D rj _. 1 1., 1 B im S is h ,4 ' ... 1 ..5 t'. ... , ,., 2 ,T ` 1 1 ( aaaaaI ,¢ Ic OL2®Vd3 L9 sHVd E i g zoosveh4 T z(xiiixlx x.xlxix x. figgi -4 ht. 2., _ 1 _ 1 1 -1---, I ,1 1 I E 8 i ii,,Jnd 1****, * tit � 1 lee` � � e i,i c F 1 1 tn, 4 ' A a 1 , go. ' E 4„.4 t �m,m x Z gt ? 4 a !!I1ijIt I 1I 1 Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. tPfrtly)rigoviPet.ey Philip Nerenberg,Lab Director Page 42 of 45 Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 R• m f,,,,---..,,==,■■�•■•• . l i g 8 iiii u.�a i >- ! ]. •— w k —' 8 � ilt s_ k 1 ___—_ t lla ,_ _ „■ _ 1 I s �� _. —p Z u ° a �_- . itiL• I I i__. an •arrsa I ' _... lili i ti .� •h+.00tti1 YQ VI X 72s1k fC X fC K sC b, )t _' l i l 1 t+++tSOOt'Y®hta1XI:X�t X X,S R<1C X j �' ,t wz8 017'6 YA 4 piv. i i _ ` --� .B I 11 G• i ZOOS Yd3 ALI �X iX*)S 1X\S T l,S,".t i t 2 OS Z zZZzz2 .... • . it1,1 II E 7-1 • a 3� _ r ' u1g3 Alit_ ti _ Ill : 2 - w ill t 0 ,:if ; 1-_ l I *. - * (0 - ii u 1 1.k i t 10 I 1111 :I . Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. (Pitelle ri.24.Jpe:y Philip Nerenberg,Lab Director Page 43 of 45 12232 S.W.Garden Place Apex Labs Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Repo rted: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 ..",.iqva . Il l . P.!. W j gywca?Mm:Rialliiiii'MM L.. ; 111111111111111111111111111 b p j Q V - � -.i.,111111111111111111111111•1111111 11 -o o° ...0411 — ._._. C 1 - 1 .. y u 7 _ I]11 r I ° ■ itiZZZ ti lr Maaae - ■ 2 1 i. �� ...I_ I� -_ ° i t7osiae►roaaa x x a:a:°Z Qx x rc s i x Jc F 1 . ocaawipa x :-xx - ~ I F s, NTRt)itQ via k9 tiro/ X: -1X X i 8 a tBOP Vd3 4s82d X X x x''x x X X X..X A 1 x g A ri t t • I,zzzz ziz ,.. h B Ft mI. ° E ', ,:. :;sAa 16.t .,11111 i li c all r — t � . it — ' 1 s, , ill 11..„ , 1.4 : 1 : ,, !! ! !! ! : ,k ii . i'1 11 ,11• ._...._._.._ . a� _ a I. zl„ i� � , 4-445*.x 4xx,A Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. 4)dfil4P124" Philip Nerenberg,Lab Director Page 44 of 45 Apex Labs 12232 S.W.Garden Place Tigard,OR 97223 503-718-2323 Phone 503-718-0333 Fax Amec Earth and Environmental,Inc Project: COE Mfg. 7376 SW Durham Road Project Number: 061M116854 Reported: Portland,OR 97224 Project Manager: Joel Eledge 08/18/11 11:58 — A ■I • I neto e ii It i ...Or, 1 i tel v- .a u k ' t .•*+ae 114 r i Y1,2 , Ii 1, E L o .. « s1, F Y: ' ? 1 ! u$ _ a U �j ■ 1, I j ur 1 10, f _-- i' ; 0 . i , y z .1,4 a' zzzzz asap ��' .._ -I— 6EbL3 a i : q ca 1 ;1 1 1 e Ir t*wc ppp9 pQ RI r !SSS tt $ y5q G B Wry QLEB Y1_. _sF1V X 1 € ma ...y_ i fi- 25 o R 2608 Vd3 kt 1 I I E S y $' r __ A fir' * e El 10) Jb J11 5 :' TI 31 . , Q. i T 1 1 j � a i E : I r4 ii 44I , A, E, i c F , 1 1 1 i ii. i !:wo. , wE+ri. w ♦t M Apex Laboratories The results in this report apply to the samples analyzed in accordance with the chain of custody document.This analytical report must be reproduced in its entirety. JJy Ti dy)fletplitfy Philip Nerenberg,Lab Director Page 45 of 45 ame APPENDIX B Field Forms DAILY FIELD REPORT NO. Former Coe Manufacturing Property-Tract B 7930 SW Hunziker Road,Tigard,Oregon DATE: TOTAL HOURS WORKED: WEATHER: SITE SECURED: YES NO DAILY SAFETY TAILGATE MEETING LOG Printed Name Company Signature Tailgate Meeting Leader: Describe Topics Covered: SITE VISITOR LOG Name Affiliation Purpose On-Site Time On Time Off EQUIPMENT USAGE Type Usage/Hours Notes SUPPLIES Type/Quantity Method of Delivery Staging Locati Notes WORK COMPLETED Phase and Work Description Progress/Quantities(include Units) Notes QA/OC INSPECTIONS/PROBLEMS/DEFICIENCIES Description Resolution Notes K:\11000\11600\11685\118854 Front Parcef\Tract B\Removal\Removal Work Plan\Appendix B-Field Forms\App B-1 DFR Form.xls Page 1 of 2 DAILY FIELD REPORT NO. Former Coe Manufacturing Property-Tract B 7930 SW Hunziker Road,Tigard,Oregon DATE: TOTAL HOURS WORKED: WEATHER: SITE SECURED: YES NO SAMPLE TRACKING Sample Name Time Sample Type Analysis COCft (SW,Sed,Soil,Air,Water, WASTE TRACKING Description of Waste/Type Quantity Units Dispositi ManifesUProfile Transporter Notes on Number PHOTOGRAPHS Photo File Name Description Notes ATTACHMENTS Name Description Notes COMMENTS K:\11000\11600\11685\116854 Front Parcef\Tract B\Removal\Removal Work Plan\Appendix B-Field Forms\App B-1 DFR Form.xls Page 2 of 2 Surface Water Quality Monitoring Form Sample Date: Sampler's Name/Signature: Weather Description: Sample Location Time of Sample PH Turbidity' Flow Sample Name Notes(Section) (S.U.) (NTU) (gal/min) Upgradlent of the Work Section Turbidity Curtain(or Check Dam for Section A) Downgradient of Work Section Turbidity Curtain Work Zone (5-ft Upgradlent of Secondary Sediment Barrier Curtain) 'Turbidity at Downgradient sample location must be within limit of 10•/of the upgradient sample or below 50 NTUs(whichever is greater).If downgradient value is above limits indicated,then stop work until conditions meet background levels. 'Identity the sample ID of the sample collected in the format: • Sediment Removal Section-A,B.C.D,or E • Sample code-surface water(SW) • Sample location-Upgradient(UG),Downgradient(DG)or Work Zone(W Z) • Sample number-first,second,third(for the day),etc., • For example,A-SW-UG-01 indicates the first surface water sample,collected at the upgradient sampling location in sediment removal Section A. • 1, OREGON r./.4 / ODFW WILDLIFE SALVAGE REPORT FORM PERMIT No.: /,- ,Rah&Wildlft*, Name of Permittee: Date: Capture Life Number of p z Number z Disposition of Pertinent Field Species , Capture Site Release Site Mortalities/ Biological Data 5 Date Stage Released Alive Mortalities/ 4 Notes Transfers 3 Collected 1 Life Stage—indicate whether an adult,sub-adult,juvenile,egg,egg mass,tadpole or larvae 2 Capture Site&Release Site—provide specific location information including UTM coordinate if available Send report to: 3 Disposition of Mortalities/Transfers—indicate if buried on site,transferred to ODFW,or transferred to wildlife rehabilitation facility ODFW,Attn: Wildlife 4 Biological Data Collected—provide information on gender, length,weight,and general body condition. Include units of measurements. Permits Coordinator 5 Pertinent Field Notes—include any other relevant field observations or information related to the wildlife salvage effort 3406 Cherry Ave.NE., Version 1.1 created on 8/2/11 Salem,OR 97303 WILDLIFE SALVAGE PROTOCOLS SPECIES GROUP: TURTLES Oregon has two species of native turtles,the western pond turtle and the western painted turtle. Both turtle species are listed as State Sensitive Species as"Sensitive-Critical"and are classified as"Nongame Wildlife Protected"(OAR 635-044-0130). It is unlawful to hunt,trap,pursue,kill,take,catch, angle for,or have in possession, either dead or alive, whole or in part,any species classified as Nongame Wildlife Protected except as otherwise authorized by ODFW permit. Two non-native turtle species are known to occur and reproduce successfully in the wild in Oregon—the red-eared slider turtle and the snapping turtle. Both are considered invasive species and have been categorized as"Prohibited Nonnative Wildlife"(OAR 635-056-0050)as they have negative impacts on our native fish and wildlife and habitats. It is unlawful to be in possession of or release into the wild any live Prohibited Nonnative Wildlife species except as authorized by ODFW permit. ODFW is currently developing specific protocols for handling frog species. It is recommended to handle encountered frog species similarly to turtles as described below. Encounters with frog species should also be reported in the ODFW wildlife slavage report form. Species identification information is included in Section B below. Identification of Suitable Turtle Habitat Suitable turtle habitat includes both aquatic and terrestrial habitats. Defer to an ODFW wildlife biologist or other qualified biologist on areas where turtles may be encountered within the project area, including nesting sites. Areas where turtles are most likely to be encountered should be identified and delineated on a project map and/or on the ground. Turtle Identification A qualified wildlife biologist or other person proficient in turtle identification(native and non-native)and identification of turtle nests and turtle eggs should be present on-site and available during project implementation. Turtle identification materials(see Section A) should be provided to all project staff with the potential to encounter turtles. Project Timing When turtles(native or non-native)are known or suspected to be present or when suitable turtle habitat(aquatic or terrestrial)has been identified at or near a project site,ODFW's Turtle Salvage Protocol(this document)should be incorporated into the project to prevent or minimize negative impacts to turtles from the project. The Turtle Salvage Protocol should be in effect during the entire project period and in any season, as turtles may be encountered at any time of the year in Oregon. The general annual activity cycle of western pond and western painted turtles is as follows: 2 Spring- In the early spring(typically March),turtles emerge from hibernation sites and move to wetlands to forage for food. Turtles begin basking on logs, rocks,banks or floating vegetation,especially on sunny spring days and when water temperatures are cool. Courtship and mating activities occur from March into June. Summer-Throughout June and July,most sexually mature female turtles leave the water to nest. Nesting occurs in dry upland areas having sparse vegetation and that receive plenty of sun. Most nesting activity occurs between dusk and dawn hours when light levels are low. Females excavate the nest chamber with their hind legs and eggs are deposited into the cavity. When egg-laying is complete,the female turtle covers the eggs with dirt and conceals the nest from potential predators. The female turtle then vacates the nesting habitat and in most cases returns to the water. The eggs are incubated by the summer sun. During mid to late summer(after nesting),turtles may have a period of reduced foraging and basking activity or dormancy called aestivation that occurs in wetlands and forests,and other upland habitats near the wetland habitat utilized earlier that year. During periods of very warm summer weather,turtles do not spend much time basking. Fall -Eggs hatch in September and October(in about 75 days) in warm sunny weather,or as much as 125 days in cooler weather or shadier conditions. If the eggs don't get enough warmth they may not hatch at all. The fully formed hatchling turtles survive on the yolk sac which they slowly absorb as they grow. Some hatchlings emerge from their nests in the fall, although most over-winter in their natal nests and emerge in the spring. After emergence,hatchlings typically make short movements near the nest just below the surface of the ground for nearly a year. Some move to aquatic habitats and seek cover. Courtship and mating can occur in the fall. Turtles move to hibernation habitats in mid-fall. Winter-Turtles are generally inactive during the winter months as they hibernate. Western painted turtles prefer to over-winter at the bottom of muddy ponds and off-channel sloughs. Most western pond turtles over-winter on land under the top layer of soil and leaf litter or under other thick ground vegetation. See Section B for additional pertinent information for each turtle species. Methods for Locating and Capturing Turtles Since turtles use both aquatic and terrestrial habitats,they may be found on land and in the water. Presence of turtles in water can be verified using visual survey methods (i.e., naked eye,binoculars, spotting scope). Turtles may be observed basking in the sun on logs,rocks or other surfaces;or they sometimes can be seen swimming close to the water's surface. When a threat is perceived,basking turtles often slip quietly into the water. Turtles on land include adult turtles(males or female)making over-land dispersal movements, gravid females in search of suitable nesting habitat, and hatchling turtles that have left the nest chamber. Hatchling turtles may spend up to a year at or near the nest site,and may be encountered on the surface of the ground or near the surface under leaf 3 litter and other vegetation. Hatchling turtles are very difficult to find, even to the trained eye. Ground Search Methods-Thorough ground searches should be conducted to locate turtles on land. Conduct a walk-through of the areas identified as potential turtle habitat,looking for turtles on land. Peer ahead to areas of suitable habitat with both naked eye and binoculars. Look below you and around you. Walk slowly. Do not take pets or young children with you as it is important to be quiet and focused on the task at hand. Try to walk in a somewhat fixed direction or pattern along a route parallel to the water's edge or other land feature,covering all suitable habitats. A qualified biologist or other person trained to locate and identify turtle nests should search for turtle nests in areas of suitable habitats within the project impact area. Reasonable efforts should be made to capture all turtles encountered that are perceived to be in jeopardy of being harmed by the project activities. Turtles can be caught by hand while they are in the water or on the land. A net or other tool may be used to capture turtles on land if hand capture is undesirable. Turtles in water can also be caught with dip nets or seine nets. If working in an aquatic system where water levels can be manipulated, lowering of the water(pool area)can help facilitate capture of turtles. Live traps(e.g.,basking trap,hoop trap) can be deployed to capture turtles in aquatic habitats. Live trapping should be coordinated closely with ODFW to minimize potential harm to turtles and minimize capture of non-target animals. For projects involving excavation and removal of material from the bottom of an existing pond,a search for turtles buried (hiding) in excavated material should be made during the excavation process and any turtles found removed from excavated debris. Turtle Nests and Hatchlin2s During ground searches, female turtles in the act of nesting/laying eggs may be encountered or completed turtle nests may be found. If possible,native turtle species found nesting should be allowed to complete the nesting process undisturbed. The nest should then be marked and avoided. Brightly colored flagging is an ideal method of marking turtle nests,although a pile of rocks or upright stick can suffice. If nesting turtles(native species only)or completed nests cannot be avoided and are deemed at risk by the project,the project manager should contact ODFW for instruction. Turtle nests and hatchlings are very cryptic and are often difficult to see, making them even more vulnerable to disturbance. Ground-disturbing activities may uncover and reveal turtle nests with eggs or hatchlings. If turtle eggs or hatchlings are encountered and are determined to be in harms way,the eggs and hatchlings should be collected and the project manager should contact ODFW immediately for instruction. ODFW may instruct the project manager to transfer the eggs and hatchlings to an ODFW-licensed wildlife rehabilitation facility specializing in turtle care. Alternatively,a new nest chamber may be dug in a safe area and eggs placed inside(by ODFW staff or other trained person), or hatchlings may be relocated to suitable habitat nearby. It is acceptable to interrupt any non-native turtles found nesting. The non-native turtle should be captured and the nest excavated by hand so that all eggs can be collected. All 4 non-native turtle hatchlings should also be captured. All non-native turtles and eggs are to be transferred to ODFW. Turtle Handling Turtles on land should generally be approached slowly. If time allows,put on a clean, unused pair of latex or rubber gloves and grasp the turtle at its bridge(connection between the carapace [top shell] and plastron [bottom shell])with both hands,holding it firmly with its plastron parallel to,and facing the ground. ** Important Safety Note: All turtles have powerful jaws and sharp beak-like mouths that can inflict a painful bite in self defense. Extreme caution should be used when handling snapping turtles as they have very long necks that can extend to both sides and above. When handling a snapping turtle,place your hands toward the rear of the turtle near the hind legs and out of reach from the turtle's head Turtle Holding& Transport Captured turtles are to be placed carefully in a clean, escape-proof plastic container. Recommended minimum container dimensions are 16"deep x 16"wide x 24"long. A deep container is the best way to prevent escape. A container with a locking lid can also prevent escape. Air holes can be made in the lid, although this is not deemed necessary for temporary holding as there is plenty of air in the container itself. Multiple turtles(2- 3,depending on size of turtles and container)may be placed in a single container since they are social creatures. When temporarily holding multiple turtles in a single container,turtles should be approximately the same size; turtles of the same size generally will get along. If a turtle is particularly aggressive toward another turtle(e.g.,biting),put the aggressive turtle in a separate container. Do not offer or put any food in the container. It is normal behavior for turtles to crawl on top of each other. A turtle may flip over,but usually it can right itself without assistance. If you notice that a turtle is unable to right itself, assist. Turtles should be kept at ambient air temperature and out of the direct sunlight. A small amount of water(about Y2 to 1-inch,or enough to reach the turtle's bottom shell)should be put in the container. Water should be from the pond from which the turtle originated or de- chlorinated tap water. Very small turtles should be kept moist at all times as they can dehydrate more quickly. Turtles should not be handled more than necessary. Final Disposition of Captured Turtles and Collected Eggs Final disposition of captured turtles and collected eggs is informed by whether the turtle is a native or non-native species. Native Turtles-Any western pond turtle or western painted turtle captured may be temporarily held for the purpose of collecting biological data(e.g., gender, length,weight),but is to be released immediately thereafter,unharmed and at the location(s)designated by ODFW in the Wildlife Salvage Permit. Collection of biological data is not required unless specifically included as a condition of the 5 Wildlife Salvage Permit. Disposition of any native turtle nest, egg(s)or hatchling found is to be determined by ODFW and according to conditions outlined in the Wildlife Salvage Permit. Non-Native Turtles-All non-native turtles (e.g.,red-eared slider, snapping turtle) are to be placed in an escape-proof container(s) and all non-native turtle eggs found are to be collected and placed in a zip-lock bag or other suitable container. All non-native turtles and eggs are to be transferred to ODFW within 24 hours of collection unless otherwise authorized in the Wildlife Salvage Permit. Required Reporting All turtles captured, eggs collected, and incidental mortalities(if any) are to be recorded on a form provided by ODFW. Information to be recorded includes: capture date and time, species captured, life stage(i.e., adult, sub-adult,hatchling, egg), capture location, release site location,and any mortalities. Biological data on turtles captured is considered optional unless required by a specific Wildlife Salvage Permit condition. Relevant field observations can be reported also. Digital photographs can be submitted with the report. The report is to be submitted to ODFW within 30 days of the Wildlife Salvage Permit expiration date. Other Considerations Additional considerations applicable to the Turtle Salvage Protocol are as follows: 1. Procedures to Avoid Transmission of Diseases or Parasites-At all times,handle a turtle(native or non-native)as if it has a contagious disease or parasites. Native turtles and non-native turtles should not be placed in the same container. During handling,wear a new pair of disposable latex or rubber gloves(i.e.,one pair of gloves,per turtle,per encounter). If a glove is torn while handling a turtle,which is likely when its toenail scrapes the glove,put on a new glove over the old one.Used gloves and disposable supplies(e.g., surveyors tape or flagging,etc.)must be placed in a plastic trash bag and disposed of offsite. All tools that contact turtles should be disinfected in accordance with procedures described below. • Clothing Disinfection Procedures-Do not allow a turtle to contact clothing. If it does,change clothes before handling another turtle. Contaminated clothes should be washed before worn again while handling turtles. Keep a change of clothes on-hand and change clothes,including shoes,before leaving the site. As an alternative,wear disposable jumpsuits or gowns and disposable paper or plastic shoe covers. • Disinfecting Tools and Equipment-All equipment and work surfaces after contact with each turtle,any equipment(e.g.,ruler)that comes in contact with a turtle should be disinfected. Recommended disinfecting solution is 0.175-percent sodium hypochlorite(bleach). A 0.175-percent sodium hypochlorite bleach is a 1:10 dilution of 5 percent household bleach to water. Before disinfecting, first remove any organic debris (e.g., dirt, feces, etc.)by rinsing the area with water or brushing off the area with paper towels or a scrub brush. Saturate the equipment and work surface with the solution and allow to air dry. When measuring turtles, 6 use only metal or plastic rulers; never use a wooden ruler, which is too porous and cannot be properly disinfected. 7 SECTION A. SPECIES IDENTIFICATION TOOLS t Oregon Native Turtles Western Pond Top shell dark brown Yellow stripes neck, Western Painted to olive,flecked pattern head,legs - yam . Moto Alan St John ' i Bottom shell cream Head,leg color same Top shell olive to ;. 1 Bottom shell with dark blotches as top shell green-black red with black pattern Found in ponds,lakes,rivers •Prefers slow moving water,ponds,sloughs Digs nests in sunny dry soil,sparse vegetation •Digs nests in sunny dry soil,sparse vegetation •Rests and over-winters in upland forest •Over-winters in mud in pond bottoms r It is illegal to remove them from the wild, possess, I transport or sell them. p the OREGON CONSERVATION STRATEGY Oregon Non-Native Turtles rte_ Snapping - Red stripe Red-eared slider Snell brown to black,serrated behind eye Shell dark brown tone serrated tail with serrated edce 7 /*If ,..alk . ", ‘..11431.41tr rge head,thick legs h ad, sir pas tow led:,leis •Native to eastern U.S. Native to eastern U.S. •Can q ow to 20 in length •Competes with natitie tuft es for food, .Fats a variety of Dative fish and wildlife basking ani nest sites It is illegal in Oregon to buy, sell, possess or release these invasive, non-native species. Please report turtle sightings: www.oregonturtles.com Oregon Department of Fish and Wildlife, j Oregon Zoo, Native Turtles of Oregon 8 SECTION B. ADDITIONAL SPECIES INFORMATION SPECIES: WESTERN POND TURTLE (Actinemys marmorata) Management Status: USDI Fish and Wildlife Service Species of Concern.USDA Forest Service,Region 6(Oregon and Washington)and USDI OR/WA Bureau of Land Management, Sensitive Species. Oregon Department of Fish and Wildlife: Conservation Strategy- Strategy Species and Oregon Sensitive-Critical Species.Washington: Endangered Species; Conservation Strategy—Species of Greatest Conservation Need. California: Species of Special Concern;Wildlife Action Plan—included in Wildlife Species Matrix as priority species.Natural Heritage Global Rank: G3G4(not immediately imperiled); State Rank: California S3 (rare,uncommon or threatened), Oregon S2(imperiled),Washington S1 (critically imperiled). Range: The western pond turtle's range extends from northwestern Baja California,Mexico, north to Puget Sound in Washington. It is restricted to areas west of the Sierra Nevada and Cascade Mountains with a few exceptions. In Oregon,the western pond turtle occupies regions primarily west of the Cascades with suitable habitat, at elevations below approximately 1800 m or 6,000 feet(Nussbaum et al. 1983, ORNHIC database 2008). The largest populations in Oregon are found in the Willamette,Umpqua,Rogue, and Klamath River drainages. Specific Habitat: The western pond turtle requires both aquatic and terrestrial habitats. It uses permanent and seasonal aquatic habitats including rivers, sloughs, lakes,reservoirs, ponds, and irrigation canals. The species moves onto land for nesting, over-wintering, dispersal,and basking. Over-winter sites typically include terrestrial refugia,burial in the substrate of aquatic habitats,or in undercut banks along streams.Nesting typically occurs within 200 m of aquatic habitat in areas with compact soil,sparse vegetation,and good solar exposure. Threats: Major factors cited as limiting western pond turtle populations include loss of aquatic habitats, elevated nest and hatchling predation,reduced availability of nest habitat, and road mortality. Predation of nests may be above historical levels in human-altered landscapes due to greater abundance of medium-sized predators. Predation of hatchlings by introduced bullfrogs (Rana catesbeiana),smallmouth bass(Micropterus dolomieui), and largemouth bass (Micropterus salmoides)is thought to be significant although evidence for this is lacking. Road mortality is an important threat particularly in urban and recreational areas.Release of pet turtles to natural areas is a growing threat and may result in increased competition and disease transmission. In addition,removal of western pond turtles by the public for pets may cause local declines. Connectivity between aquatic and upland habitats increasingly becomes a concern as urban and agricultural development continues to fragment landscapes. Agricultural and vegetation management activities can result in nest destruction and mortality to adult females. Recreational activities within or adjacent to aquatic and nest habitats are an important concern in some parts of the species' range. Accidental catch of turtles while fishing also occurs. Illegal shooting of western pond turtles may occur in some areas. Research and survey work can affect western pond turtles by disrupting behavior, increasing the risk of disease transmission, and potentially influencing predator behavior. 9 Management Considerations: Western pond turtles occur on lands managed by public agencies at many jurisdictional levels including City, County, State, and Federal levels. Western pond turtles occur predominately on lands in private ownership in the Willamette Valley Ecoregion. Management approaches and actions will need to take into account the diversity of land allocation patterns. Because of the broad distribution of western pond turtles on private lands,management will need to focus on non-federal lands in some regions by engaging private landowners and watershed councils. Because both aquatic and upland habitats are required by western pond turtles,management by more than one public agency or landowner is likely to affect a given population or even an individual turtle. Despite these challenges,management actions that can contribute to the conservation of western pond turtles are numerous. Conservation actions to improve conditions for western pond turtles in Oregon include improving aquatic and terrestrial habitats,reducing road mortality,managing recreation near turtle-use areas, controlling non-native turtles,eliminating future releases of pet turtles,and in some areas may include reducing nest and hatchling predation. SPECIES: WESTERN PAINTED TURTLE (Chrysemys picta bellii) Management Status: U.S.D.I. Fish and Wildlife Service Species of Concern,U.S.D.A. Forest Service,Region 6 and U.S.D.I. Bureau of Land Management in Oregon-- Sensitive Species. Oregon Conservation Strategy- Strategy Species and Oregon Sensitive-Critical species. Washington—no special status.Natural Heritage Global Rank: G5 (Demonstrably widespread); State Rank in Oregon: S2 (imperiled); State Rank in Washington: S5 (Demonstrably widespread). Range: The painted turtle is the most widespread native turtle species in North America, occurring from the Atlantic to the Pacific coasts. Its range includes most of the eastern and central United States. The subspecies C.picta bellii,the western painted turtle, occupies the largest portion of the species range,from western Ontario to British Columbia and south into the central United States. In Oregon,native western painted turtles are narrowly distributed along the northern portion of the state. They are found in north-central and north-eastern Oregon,primarily in the Columbia River Basin, and in the northern portion of the Willamette River Basin,primarily north of Salem. Painted and pond turtles co-occur in aquatic habitats in the northwest portion of Oregon, especially in the Willamette River basin north of Salem. Specific Habitat: Aquatic and terrestrial habitats are required for western painted turtles. Their aquatic habitat is typically slow-moving and shallow water,including streams, canals, sloughs,small lakes,and ponds. They appear to select water bodies with surface or emergent vegetation and a muddy substrate. Terrestrial habitat is used primarily for nesting,but occasionally for over-wintering and overland movements among aquatic habitats.Nest habitat is composed of sparsely vegetated areas with southern exposure near aquatic habitat, usually within 50 m. A broad array of substrates is used for nesting,including recent fill. Over-wintering is often in shallow aquatic environments but also occurs in terrestrial habitats. Little is known of habitat use by hatchlings,but evidence suggests they tend to use shallower aquatic habitats. In Oregon,western painted and western pond turtles use similar habitat. The primary difference appears to be the painted turtle's greater dependence on aquatic habitat for over-wintering and selection of slower,more stagnant aquatic habitats. 10 Threats: Threats to western painted turtles in Oregon are very similar to western pond turtles and are often landscape-specific. Factors most often cited as limiting western painted turtle populations include loss of wetland and upland habitat, and elevated nest and hatchling predation. Elevated hatchling predation has been purported to be from introduced fish and bullfrogs,but evidence is lacking to support this hypothesis. Predation on nests is believed to be elevated in urban environments due to greater abundance of mid-sized predators that have adapted to human disturbance such as raccoons, skunks and coyotes,but there has been little quantification of these threats. Reduced nest site availability is a concern as well,particularly in urban environments. Because a large portion of the western painted turtle population in Oregon is in or near urban areas,threats are tied to factors associated with large human populations. This includes road mortality and limited connectivity between nesting,over- wintering, aquatic, and dispersal habitat,competition from introduced turtle species,human disturbance from increased recreational use of aquatic systems,and indirect effects of pesticide use. Indirect effects of research activities in some populations are a concern. Although wetland systems are often protected,the adjacent upland areas that are crucial for reproduction are frequently not protected. An important and increasing threat is the loss of genetic uniqueness because of release of pet painted turtles. Most of these threats are associated with the reduction in habitat and increased human access in the western portion of the painted turtle's range in Oregon. Management Considerations: Conservation actions to improve conditions for western painted turtles in Oregon include improving aquatic and terrestrial habitats especially in managed waterways such as the Columbia Slough, increasing connectivity among populations, and reducing loss of adults by decreasing road mortality and reducing illegal removal by the public. Improving or creating nest habitat,hatchling habitat, and basking structures in some aquatic habitats,and managing recreation near turtle-use areas are feasible management actions. Populations of introduced and invasive species,especially the red-eared slider and more recently the common snapping turtle,need to be managed. Furthermore, eliminating the release of pet painted turtles is vital to maintain genetic integrity of the populations in Oregon. Education on introductions and translocations is critical to reduce or eliminate the frequency of these often well-intended activities by the public. Further, if the threat of the capture and removal of western painted turtles from their native habitats in the Portland metropolitan areas is as high as local natural resource professionals fear,instituting a volunteer citizen`watch"may be very useful. Because of long-term survey and research efforts that have been occurring at some vulnerable populations,we recommend the development of a larger-scale research and survey strategy,designed to avoid or minimize possible impacts on turtle populations from all of the survey and research activities. Development of a conservation plan for painted turtles in the Portland metropolitan region would facilitate the coordination of effective conservation actions across numerous jurisdictions. Because western painted turtles occur largely on private lands and designated open spaces managed by public agencies,management will need to focus on non-federal lands, and engage private landowners and local municipalities. 11 SPECIES: RED-EARED SLIDER (Trachemys scripta elegans) Origin: Eastern United States Ecology: Found in ponds,lakes and slow moving or still backwaters of rivers. Diet consists of plants,insects, snails,tadpoles, crayfish,worms and fish. Status: Prohibited in Oregon. Large populations are found throughout the Willamette Valley and in other areas of the state. Most are illegally released pets. Impact: Competes with native turtles for food and nesting,basking and cover habitat. Red- eared sliders can transmit parasites and diseases to which our native turtles have no immunity. SPECIES: SNAPPING TURTLE (Chelydra serpentina) Origin: Eastern United States Ecology: Found in ponds, lakes,sloughs or slow moving rivers,preferring water bodies with muddy bottoms. Diet is comprised of aquatic vegetation,amphibians,crayfish,worms,birds, small mammals,carrion and other turtles. Snapping turtles will eat about anything that will fit between their jaws. Status:Prohibited in Oregon. Populations found throughout the Willamette Valley and in other areas of the state. Impact: In Oregon, snapping turtles compete with native turtles for food,nesting and cover habitat. Snapping turtles can transmit parasites and diseases to which our native turtles are not immune. 12 SPECIES GROUP: FROGS Species:Northern Red-legged Frog(Rana aurora) Origin: Western Oregon Red-legged frogs like cool damp forests and wetlands. Adults have red underlegs,hence their name. Their decline in the northwest is due,in part,to habitat loss and invasive bullfrogs. Fun fact: It's unlikely you'll ever hear a red-legged frog call. They call underwater.fi ^� W1 -NY % tit',' t ✓ "�� t N. "y° 1►' • 1i. a A Northern Red-legged Frog Species: American Bullfrog(Rana catesbeiana) Origin: Eastern and Southeastern United States Bullfrogs grow on average to be about 3.5 to 6.0 inches in body length. The American bullfrog has been widely introduced to most western states and poses a serious threat to native species because bullfrogs are aggressive and will eat anything smaller than themselves. They are considered a factor of the red-legged frogs' decline. -. American Bullfrog 1; amec APPENDIX C Standard Operating Procedures Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-1: Sediment and Soil Grab Sampling Methodology PURPOSE Sediment confirmation samples will be collected from each of the sediment removal sections, Section A, Section B, Section C, Section D, and Section E, along the creek. Soil confirmation samples will be collected from four upland soil removal areas. Sediment and soil confirmation samples will be collected using a hand auger from the upper 6-inches of the exposed surface, after the removal action is conducted in each of the Sections. EQUIPMENT LIST 1) Stainless steel spoons or trowels 2) Stainless steel corer/auger 3) Core liners 4) Wooden dowel to extract sample from core liner 5) Appropriate field sampling form, field logbook, sediment core log sheets, and indelible pens 6) Measuring tape 7) Sample containers, labels, coolers, and ice 8) Resealable 1-2 gallon and quart plastic bags 9) Rubber chest waders, if appropriate 10)Decontamination equipment (see SOP D-2: Decontamination Procedure and sampling plan for additional site-specific requirements) 11)Site map and site health and safety plan (HASP) 12) PPE appropriate for site (see HASP) PROCEDURES 1) Obtain sampling supplies and equipment and ensure appropriate sample containers are prepared and ready for sample collection. 2) Mobilize sampling equipment to appropriate sampling location. 3) Layout measuring tape to measure sampling locations. 4) Label the outer surface of a 1-2 gallon, double-bagged plastic bag with the location identification (ID), sample interval, date, and time. 5) Advance core to sampling depth, depending on requirements specified in work plan. Sediment samples collected from different boreholes but at the same sampling location and depth interval may need to be composited to obtain adequate sample volume. 6) Inspect the sediment sample for acceptability. The core should be collected at the required depth with no significant loss of sediment. 7) Decant excess water from the sample, if possible, allow the core to drain excess water using gravity. 8) Extrude the core using a wooden dowel. 9) Note sediment characteristics in field notebook. Record all observations on field forms. The on-site geologist will log the physical characteristics of the surface sediments, including color, texture, soil consistency, relative grain size, presence of debris, sheens, or odors. The physical characteristics of the vertical profile should include changes in sediment characteristics in accordance with existing applicable methodology. 10)Transfer sediment into a 1-2 gallon, double-bagged plastic bag. 11)Transfer the bagged sediment samples to the designated sample processing area. Disposable surfaces (e.g., plastic sheeting and/or aluminum foil) will be used to prevent cross contamination when handling sediment samples. All utensils that are used to process samples should be made of inert materials such as Teflon, HDPE or stainless steel. 12) Mix the contents of the bag well and allow equilibration to ambient temperature. Unrepresentative materials such as twigs, shells, leaves, stones, and wood chips should be removed and documented on the field log. 13)Transfer the remainder of the homogenized sediment into the appropriate pre-cleaned and certified sample containers provided by the contract laboratory. 14) Record sample date, time, and sampler name on sample label(s) and record on the appropriate field form. 15) Record samples on chain-of-custody forms and place in coolers. 16) Record all observations on sediment boring log sheets and on the appropriate field form. 17)Coordinate transportation of samples to appropriate analytical laboratory(ies). Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-2: Decontamination Procedure PURPOSE Decontamination of non-disposable equipment is performed at sites where environmental contamination is known or suspected. The purpose of decontamination is to minimize the potential for cross-contamination between sampling locations (potentially resulting in unrepresentative samples and/or causing the spread of contamination) and also to protect human helath and safety. EQUIPMENT LIST 1) Deionized/Distilled water 2) Plastic buckets 3) Spray bottles 4) Disposable rags or paper towels 5) Potable water (can be replaced by deionized water) 6) Site map and site health and safety plan (HASP) 7) PPE appropriate for site (see HASP) PROCEDURE Sampling equipment (e.g., shovels, trowels, coring devices, etc.) will be decontaminated as follows: 1) Soap wash (dilute solution of Alconox or equivalent in potable water solution); 2) Potable water rinse; and 3) Distilled/deionized water rinse. Decontamination fluids will be transported from the generation point to the soil processing area. Decontamination fluids will be sent through the water treatment system and recycled for reuse within the soil washing processing plant. Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-3: Surface Water Sampling Methodology PURPOSE Surface water quality samples will be collected from three monitoring locations, including a upgradient monitoring point, located upgradient of the sediment removal Section (upgradient of the turbidity curtain or check dam), a downgradient monitoring point, located approximately 5 feet downgradient tubidity curtain at each of the sediment removal Sectionss, and a work zone monitoring point, located within 5 feet downgradient secondary turbidity curtain at the boundary of the work zone within the creek. EQUIPMENT LIST 1) Sampling equipment (see description below) 2) Appropriate field sampling form and/or field logbook with indelible pens 3) Safety equipment (e.g., harness), as appropriate 4) Decontamination equipment (see SOP D-2: Decontamination Procedure and sampling plan for additional site-specific requirements) 5) Site map and site health and safety plan (HASP) 6) PPE appropriate for site (see HASP) PROCEDURE 1) Prior to sample collection, the water body characteristics (size, depth, flow) should be recorded in the field logbook. Sampling should proceed from downstream to upstream locations to minimize the disturbance that would affect sample quality. When wading in a stream or pond, care must be taken not to collect the water sample where bottom sediments have been disturbed. 2) Samples collected near the surface can be collected directly into the unpreserved, laboratory cleaned sample bottle or with a dipper. In situations where the water cannot be reached, the sample container can be attached to an extension on the dipper. A subsurface bottle sampler or disposable dippers also can be used for this application. 3) If the sample requires preservation (for lead analysis, as example), then the sample should be transferred from the unpreserved sample bottle or dipper into the preserved bottle. 4) Dippers allow remote sampling of from hard to reach areas. A dipper is simply a bottle attached to an extension that is immersed into a liquid to collect a sample (Figure 1). Disposable dippers can be used to eliminate problems associated with decontamination and cross contamination of samples. Some dipper samplers are equipped with a pivoting head to sample in hard to reach areas such as sewers or outflow pipes. Figure 1. Polyethylene Disposable Dipper Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-4: Surface Water Field Parameter Measurement Methodology PURPOSE Field parameter measurements of pH and turbidity concentrations will be obtained with calibrated instruments at all sample sites prior to sample collection. EQUIPMENT LIST 1) Portable, battery-powered multiprobe equipment (e.g., YSI 650 MDS or YSI 610) with calibration solutions and instructions 2) Turbidity meter 3) Appropriate field forms for recording readings and/or field logbook with indelible pens 4) Knife or scissors 5) Decontamination equipment (see SOP D-2: Decontamination Procedure and sampling plan for additional site-specific requirements) 6) Site map and site health and safety plan (HASP) 7) PPE appropriate for site (see HASP) PROCEDURE 1) Field measurements for pH will be measured with portable, battery-powered instruments (e.g., YSI 650 MDS or YSI 610 D multiprobes). Procedures for calibration and measurements are outlined in the user manuals included with these instruments. At a minimum, these instruments will be calibrated each day before sampling activities begin. If possible, these field parameters will be measured directly by lowering the probe into the water body at the sampling location prior to collecting the water and sediment sample. The probe will be decontaminated between measurements as outlined in SOP D-2: Decontamination Procedures. Measurements will be recorded on the appropriate field form. 2) Measurements for Turbidity. Turbidity will be measured once per sample immediately prior to filling sample bottles for lead. Turbidity will be measured using appropriate portable, battery-powered field equipment and results will be recorded in nephelometric turbidity units (NTU). Dilution of the sample may be required for water with high turbidity. The measurements will be recorded on the appropriate field form. Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-5: Dewatered Sediment Grab Sample Methodology PURPOSE Soil and sediment grab samples will be collected to characterize sediment contained in the roll- off boxes following dewatering. EQUIPMENT LIST 1) Blank field sampling form and field logbook with indelible pens 2) Hand auger 3) Sample containers, labels, packaging material 4) Plastic sheeting (visqueen) and buckets 5) Clean stainless steel trowel 6) Decontamination equipment 7) Resealable plastic bags 8) Decontamination equipment (see SOP D-2: Decontamination Procedure and sampling plan for additional site-specific requirements) 9) Site map and site health and safety plan (HASP) 10) PPE appropriate for site (see HASP) PROCEDURE 1) Decontaminate the hand auger bucket using SOP D-2: Decontamination Procedures. 2) Lay plastic sheeting (visqueen) adjacent to the sampling location. Place bucket(s) on sheeting. 3) Assemble the hand auger and rotate it into the soil at the desired sampling location. Use the bucket(s) to contain the soil cuttings from the hand auger. 4) Once the desired sampling depth is reached, decontaminate the hand auger bucket. Rotate the hand auger into the bottom of the boring and retrieve the bucket. Using appropriate PPE and/or a decontaminated trowel, remove soil from the center of the auger bucket and place it in the appropriate sample jar. 5) Handle samples according to the associated SAP. 6) Continue hand augering and collecting samples according to the work plan or SAP. Decontaminate the hand auger bucket and trowel or other sampling equipment prior to collection of each soil sample. 7) Record sample information on the field form and other field observations in the field logbook. 8) Decontaminate hand auger and trowel when sampling is complete. 9) Handle decontamination water according to Appendix D-2 Decontamination Procedures. Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-6: Treated Water Grab Sample Methodology PURPOSE Treated water grab samples will be collected to characterize the water generated during field activities, after it has been treated byfiltration. Water will be treated through a wash water treatment system consisting of a frac tank, sand filter, and granular activated carbon (GAG). Grab samples will be collected using a dip sampler from each 5,000 gallon batch of treated water. EQUIPMENT LIST Non-dedicated sampling equipment will be properly cleaned before sample collection. 1) Dip sampler 2) Peristaltic pump 3) Disposable tubing 4) Decontamination equipment (see SOP D-2: Decontamination Procedure and sampling plan for additional site-specific requirements) 5) Site map and site health and safety plan (HASP) 6) PPE appropriate for site (see HASP) 7) Sample containers, labels, packaging material 8) Blank field measurement forms If access to flow is not possible refer to SOP D-3: Surface Water Sample Collection for list of other equipment and procedures. PROCEDURE 1) Decontaminate non-dedicated sampling equipment according to SOP D-2: Decontamination Procedures. 2) Label the sample bottle with the site location, time/date, and sampler's name before filling the bottle. 3) Collect water sample using decontaminated or dedicated bucket, bailer, or sampling pump. 4) Fill appropriate laboratory supplied container while filling the sample container. 5) Place lid top-down on a clean surface out of the rain or hold in hand while taking the sample. Do not allow inside of lid to contact any objects. Avoid overfilling samples. 6) Place labeled sample container in a cooler to maintain a sample temperature of 4°C during shipping. Ice should be placed in double-wrapped watertight bags to prevent leaking during shipping. 7) Pack samples in cooler to prevent leakage or breakage. Use foam or bubble wrap to protect sample bottles. 8) Record samples on chain of custody (COC) and keep COC with sample cooler. Former Coe Manufacturing Property—Tract B Removal Action Work Plan SOP D-7: Turtle and Amphibian Salvage Plan PURPOSE Native and non-native turtles and amphibians may be present in the work area. In accordance with recommendations provided by the Oregon Department of Fish and Wildlife (ODFW), wildlife encountered during the removal action will be salvaged according to the following procedure. EQUIPMENT LIST 1) Coarse-mesh dip net for turtles 2) Fine-mesh dip net for amphibians 3) Pitchfork or similar hand tool for use in sediment 4) Clean 5-gallon buckets 5) Camera 6) Turtle identification sheet 7) Amphibian identification sheet 8) ODFW Wildlife Salvage Report Form (Appendix B of Work Plan) PROCEDURE 1) Inspect work area prior to beginning excavation. a. If turtles or amphibians are observed, capture with dip net. b. Identify if the turtle or amphibian is a native species and healthy by consulting Appendix B. c. Photograph the turtle or amphibian. d. Notify the project manager and project biologist of observation and capture of turtle or amphibian. e. If native and healthy, re-locate the turtle or amphibian down-gradient of the work zone. f. If non-native and/or diseased/injured, leave the turtle or amphibian in the bucket with a small amount of water for transportation to ODFW office. g. Complete the ODFW Wildlife Salvage Report Form. 2) Inspect excavated material when the material is transferred to the loader. Bucket loads should be transferred slowly to allow for visual observation of material. a. If turtles or amphibians are observed, capture with the dip net and follow the procedures above. b. If necessary, very gently use a pitchfork or other hand tool to rake through the sediment to look for turtles. amen APPENDIX D Agency Correspondence and Permit Applications Taylor, Maya From: Taylor, Maya Sent: Thursday, September 08, 2011 3:02 PM To: danette.l.faucera @state.or.us Cc: Eledge, Joel; Esler, Charles T; artj @hevanet.com; HARMAN.Charles @deq.state.or.us Subject: In-water work window extension request Attachments: Figure 1 - Site Location Map.pdf; Figure 2- Sediment Removal Areas.pdf Hi Danette, As discussed on our call yesterday, our client, Art Johnstone with the Coe Ownership Group, received a DEQ letter approving a time-critical removal action in a segment of Redrock Creek at the former Coe Manufacturing Property located at 7930 SW Hunziker Road in Tigard. The attached Figure 2 shows the site plan with proposed excavation areas. The results of sediment sampling conducted in Redrock Creek indicate approximately 75 CY of material should be removed to a maximum excavation depth of 0.5 feet. The constituents of concern are PCBs and heavy metals. Scope of work summary: We are currently developing our Removal Action Work Plan and will include water quality or habitat protection measures recommended by ODFW and other agencies. We are proposing to install a double sediment barrier curtain at the downstream boundary of our work area and a check dam at the up-gradient boundary to limit the volume of water in the work zone. Bypass pumping may be used if necessary to divert excess water flow. The excavation will be performed by an excavator or sediment vacuum, depending on equipment access capabilities. The in-water removal is anticipated to take one to two days. Confirmation sampling will be required to ensure that contaminated sediment has been adequately removed. Depending on the results of confirmation sampling, additional excavation may be required. Existing conditions: A Level 1 Ecological Risk Assessment (ERA)was performed in 2008. The results of the ERA indicate that there was a low likelihood that the site is used as wildlife habitat, due to the amount of impervious development(90%of site is developed) and proximity to the railroad and roads. The work area is located directly downstream from a culvert at Hunziker Road and receives stormwater input from adjacent impervious areas, including Hunziker Road and Oregon State Highway 217 (please see attached Figures 1 and 2). Restoration: Following completion of the removal action, we are proposing to replant upland and riparian disturbed areas with native Oregon species. Fill will not be added to excavated areas within Redrock Creek. The restoration measures will be described in detail in the Removal Action Work Plan to be approved by DEQ. We are requesting an extension of the in-water work window through November 30, 2011. The additional time will be required to complete the Removal Action Work Plan, obtain DEQ approval, provide notification to other agencies, complete the removal action, and allow a contingency time window for additional excavation pending the results of confirmation sampling. Please let us know if ODFW approves the November 30, 2011 extension for this project. If you would like additional information about the project, feel free to contact me or the DEQ project manager, Chuck Harman (503) 229-6431. 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' ''''''::'''1':. -' $ `';'-- th-ti' 4'7 Ili' F Y .0 I ;.k 'i. ,4 '1, :11' 1 'j I il'. 4 :‘,.r -:t::;'::;,-4:04 t s r h w a,T r' -4 r ,, '„ '` `'fllOO 200 a t y l Fee. r^ a. r P ° •C NOTE:Taxlots and 2009 aerial imagery from ftp.metro-region.orp-Metro Data Resource Center. CLIENT. 1"t 'BY PROJECT • DATE: sD REDROCK CREEK SEDIMENT REMOVAL ACTION SEPTEMBER 2011 REALNET INVETSMENTS, LLC CHK'osr JE FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO.: 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 DATUM NAD83 TITLE REV.NO AMEC Earth & Environmental PROJECTION 11810 North Creek Parkway N ame OR SP North,Ft. SITE LOCATION MAP FIGURE NO: Bothell,WA 98011 SCALE: 1 inch=200 feet FIGURE 1 l K:\1 10001116001116851116851\DWG1Front Parcel Maps\Tract B Removal\Figure 1-Site Location Map.mxd - a ii.: iti.,...-,; LEGEND i/ *f • 3!:I , 1--- - REDROCK CREEK - 4 r.R APPROXIMATE PROPOSED �' t SEDIMENT REMOVAL AREA(2397 sq. ft.) 4 ,; i ,-- , t . TAXLOT BOUNDARY j ;�. ..,, , '"Y' rQi%" 2:; aws, l x-� f.. ¢o _ .x..?.. - w 4 . A . • , t.• r ' g t:11. sill.*::::.t.4.:'#-**, ' a 1. '1r 111111111111111 rt - � y '� r f 11. :lrt • i f 4 r' • $�• f. , 2S1016A0a600 ��, . ���� (Middle Parcel) 2 .1 f1CA0070f ' - �� '�eoffiga ... 1, . ..,`,41t.. , ; _ T d y T A` p.. T i tail, ifiks.--;\-,•.)%.._ / Former Hazardous ,. `to _,, ., WastelPetroleum tf f ) ` Storage Area�, , d • •f i — t Building #1 t ? s Compressor Shed i „r.• 2S101CA00500 '- -' _ , • "Offices 2S101CA00400 ( Pa el), ., aW-.._ SW-Wa1ISt. 5 0 50 100 150 -. °ti'�rn a ti ,..fit x-,,trro'� . '"'4.• , • A m "AT' , ":-..x.`^.-.,,,-°' .w .,a,,,, : ua"`y, w• IMM Feel a r t ...'. NOTE'.Taxlots and 2009 aerial imagery from ftp.metrotaglon.org-Metro Data Resource Center. CLIENT a°t ° PROJECT DATE SD REDROCK CREEK SEDIMENT REMOVAL ACTION SEPTEMBER 2011 REALNET INVETSMENTS, LLC "K'°B" FORMER COE MANUFACTURING FACILITY -TRACT B PROJECT NO JE DATUM. 7930 SW HUNZIKER ROAD, TIGARD, OREGON 0-61M-11685-4 NAD83 TITLE REV.NO AMEC Earth & Environmental PROJECTION FRONT PARCEL AND TRACT B OVERVIEW 11810 North Creek Parkway N OR SP North,Ft FIGURE No Bothell,WA 98011 SCALE PROPOSED SEDIMENT REMOVAL AREAS 1 inch=100 feet FIGURE 2 K'.\11000\11600\11685\116851\DWG\Front Parcel Maps\Tract B Removal\Figure 2-Sediment Removal Areas mxd Taylor, Maya From: Taylor, Maya Sent: Tuesday, September 27, 2011 3:38 PM To: Eledge,Joel Subject: FW: DEQ Environmental Clean-Up Project;Tigard, OR Maya V.Taylor Tel(503)639-3400 Mobile.cell(503)789-5384 maya.tavlor@amec.com From: MCCABE Mike fmailto:mike.mccabe @state.or.usi Sent: Tuesday, September 27, 2011 9:19 AM To: Taylor, Maya Subject: RE: DEQ Environmental Claen-Up Project; Tigard, OR Hi Maya, Based on our phone conversation this morning, DSL supports the project moving forward as soon as possible in order to keep the removal activity in the preferred in-water work period. The project is covered under the legislative exemption for DEQ environmental clean-up projects, so we will issue the exemption letter as soon as we receive the joint permit application.You do not have to wait for our exemption letter to start the removal action. Thanks much, Mike Michael V. McCabe, MS Natural Resource Coordinator Wetlands&Waterways Conservation Division Oregon Department of State Lands 503.986.5255 (office) 503.378.4844(fax) mike.mccabe @dsl.state.or.us www.oregonstatelands.us Mike is currently managing the Oregon Removal-Fill Law permitting process, (including monitoring, enforcement, ono public education)in Multnomah, Columbia, and Washington Counties and has held several positions in OSL for nearly 18 years. Taylor, Maya From: Eledge,Joel Sent: Thursday, September 22, 2011 2:24 PM To: brian.a.villalon @usace.army.mil Cc: Taylor, Maya; Esler, Charles T;Art Johnstone; HARMAN Charles Subject: Project Summary for Former Coe Manufacturing Attachments: DELI_Sed_Removal_Ltr_9_2_2011.pdf; Signed USAGE app- Hunziker.pdf; Figure 5- Proposed Shallow Soil Removal Areas.pdf; Figure 1 - Site Location Map.pdf; Figure 2 - Project Site Overview.pdf; Figure 3 - Proposed Sediment Removal Areas A-B.pdf; Figure 4- Proposed Sediment Removal Areas C-D-E.pdf Good Afternoon Brian, As a follow-up to your telephone discussion with Maya Taylor yesterday, I am providing the additional information you requested regarding the soil and sediment removal action at the former Coe Manufacturing property in Tigard. Project Background On September 2, 2011,our client,Art Johnstone (represented by RealNet Investments, LLC), received the attached letter from the Oregon Department of Environmental Quality(DEQ) recommending a time-critical Removal Action in a segment of Redrock Creek at the former Coe Manufacturing Property located at 7930 SW Hunziker Road in a commercial/industrial area of Tigard. The attached Figure 1 shows the project site location. The purpose of the removal action is to mitigate outstanding risk to ecological receptors from contaminants identified in upland soil and creek sediments during previous environmental investigations. The constituents of concern are polychlorinated biphenyls (PCBs) and heavy metals. Existing Site Conditions A Level 1 Ecological Risk Assessment(ERA)was performed in 2008. The results of the ERA indicate that there was a low likelihood that the site is used as wildlife habitat, due to the amount of impervious development(90%of site is developed)and proximity to the railroad and roads. The in-water work area is located directly downstream from a culvert at Hunziker Road and receives stormwater input from vicinity impervious areas, including commercially developed properties, Hunziker Road and Oregon State Highway 217 (please see attached Figures 1 and 2).The City of Tigard's Local Wetlands Inventory indicates no wetland habitat is located within the proposed work areas. Removal Work Scope of Summary The Removal Action will consist of removal of approximately 45 to 75 cubic yards(CY)of contaminated sediment below the ordinary high water mark in Redrock Creek and removal of approximately 70 CY of contaminated soil from upland areas above the ordinary high water mark. Contaminated sediments in Redrock Creek will be removed to a maximum excavation depth of 0.5 feet. No fill material will be placed in the in-water excavations. Upland soils(i.e.,above the ordinary high water line)would be removed to a maximum excavation depth of 1 foot. Upland excavations will be restored to existing grade with clean, imported soil and gravel fill. The attached Figure 2 shows the site overview with proposed excavation areas. Soil and sediment excavation areas details are shown in the attached Figures 3,4, and 5. We are currently completing our Removal Action Work Plan(Work Plan)that we anticipate submitting to DEQ for review on Monday,September 26. The Work Plan will include additional details of the proposed removal activities. The Work Plan will include water quality and habitat protection measures recommended by Oregon Department of Fish and Wildlife (ODFW)and other agencies. We are proposing to install a temporary check dam at the up-gradient boundary to limit the volume of water in the work zone and double sediment curtains at the upstream and downstream boundaries of each of our individual sediment removal work areas and (please see attached Figures 3 and 4). Bypass pumping may be used, if necessary,to divert excess water flow. The excavation will be performed by an excavator or sediment vacuum,depending on equipment access capabilities. Following completion of the removal action, confirmation sampling will be performed to demonstrate that contaminated sediments were adequately removed. Depending on the results of confirmation sampling,additional excavation may be required. After completion of the removal action, any disturbed areas will be replanted with appropriate native Oregon species. Project Schedule We have been granted an extension of the in-water work window by ODFW through November 30, 2011. AMEC will endeavor to complete the removal activities as soon as is practicable after final approvals are received from DEQ and the other permitting agencies. The in-water removal work is anticipated to be completed in two to three days. Due to anticipated flow volumes from stormwater during the rainy season,the preferred timeframe for in-water work is early to mid October. It is crucially important to our client to complete the removal action prior to the close of the extended 2011 in-water work period. If the proposed removal effort is delayed until the next available in-water work window(i.e.,July 2012), creek sediments would likely be mobilized downstream and re-distributed during the rainy season. ODFW has expressed their preference to have the contaminated sediments removed as soon as possible to avoid potential mobilization downstream into Fanno Creek. In addition,as the former owner of the Coe Manufacturing property,our client is contractually and financially obligated to current property owner to obtain regulatory closure of the property cleanup from DEQ. Delaying the removal until 2012,would require prior investigation sampling efforts to be updated or redone. Our client does not have the financial resources to complete the additional investigation work that would be needed if the removal action is delayed. If you would like additional information about the project,feel free to contact me, Maya, or the DEQ project manager, Chuck Harman (503) 229-6431. Thank you, Joel Eledge,CHMM Environmental Scientist AMEC Earth & Environmental 7376 SW Durham Road Portland, Oregon 97224 (Tel) 503.639.3400 (Fax) 503.620.7892 (Mobile) 503.730.7456 mailto:joel.eledge @amec.com 2 ame September 23, 2011 061M116854 Clean Water Services 2550 SW Hillsboro Highway Hillsboro, OR 97123 Attention: Ms. Amber Wierck Subject: Request for Service Provider Letter Former Coe Manufacturing Facility 7930 SW Hunziker Street, Tigard, OR 97223 Dear Ms. Wierck: On behalf of RealNet Investments, LLC (RealNet), AMEC Earth & Environmental, Inc. (AMEC) has prepared the enclosed information for the above-referenced property (Site). We are requesting a Service Provider Letter from Clean Water Services (CWS) to support the time-critical remedial action to be performed under Oregon Department of Environmental Quality (DEQ) oversight. As requested in the CWS email dated September 13, 2011, we are providing the following information: 1. Sensitive Area Certification Form (see Attachment 1) 2. Existing Conditions Site Map (see Attachment 2) 3. Proposed Conditions Site Maps (see Attachments 3a and 3b Sediment Removal Areas and Attachment 3c Soil Removal Area) 4. Enhancement Plan (see narrative below) PROJECT NARRATIVE In addition to the attached information, a brief project narrative is provided in the following sections. PROJECT BACKGROUND On September 2, 2011, our client, Art Johnstone(represented by RealNet Investments, LLC), received a letter (Attachment 4) from the Oregon Department of Environmental Quality (DEQ) recommending a time-critical Removal Action in a segment of Redrock Creek at the Site. The AMEC Earth&Environmental,Inc. 7376 SW Durham Road Portland,Oregon USA 97224 Te1+1 (503)639-3400 Fax+1 (503)620-7892 www.amec.com K:\11000\11600\11685\116854 Front Parcel\Tract B\Permits\CWS\CWS Cover Letter.Docx Request for Service Provider Letter ame Former Coe Manufacturing Facility 0 Tigard, Oregon purpose of the removal action is to mitigate chemical contaminants in upland soil and creek sediment, which poses a risk to ecological receptors. The constituents of concern are polychlorinated biphenyls (PCBs) and heavy metals. EXISTING SITE CONDITIONS A Level 1 Ecological Risk Assessment (ERA)was performed in 2008. The results of the ERA indicate that there was a low likelihood that the site is used as wildlife habitat, due to the amount of impervious development (90% of site is developed) and proximity to railroad and road corridors. The in-water work area is located directly downstream from a culvert at Hunziker Road and receives stormwater input from vicinity impervious areas, including commercially developed properties, Hunziker Road and Oregon State Highway 217. The City of Tigard's Local Wetlands Inventory indicates no wetland habitat is located within the proposed work areas. REMOVAL ACTION SCOPE OF WORK The Removal Action will consist of removing approximately 45 to 75 cubic yards (CY) of contaminated sediment below the ordinary high water mark in Redrock Creek and approximately 70 CY of contaminated soil from upland areas above the ordinary high water mark. Contaminated sediments in Redrock Creek will be removed to a maximum excavation depth of-0.5 feet. No fill material will be placed in the in-water excavations. Upland soils (i.e., above the ordinary high water line) would be removed to a maximum excavation depth of 1 foot. Upland excavations will be restored to existing grade with clean, imported soil and gravel fill. Soil and sediment excavation areas are shown in Attachments 3a, 3b, and 3c. The Removal Action Work Plan (Work Plan) will be submitted to DEQ for review on Monday, September 26. The Work Plan will include additional details of the proposed removal activities. The Work Plan will include water quality and habitat protection measures recommended by Oregon Department of Fish and Wildlife (ODFW) and other agencies. We are proposing to install a temporary check dam at the up-gradient boundary to limit the volume of water in the work zone and double sediment curtains at the upstream and downstream boundaries of each of our individual sediment removal work areas. Bypass pumping may be used, if necessary, to divert excess water flow. The excavation will be performed by an excavator or sediment vacuum, depending on equipment access capabilities. Following completion of the removal action, confirmation sampling will be performed to demonstrate that contaminated sediments were adequately removed. Depending on the results of confirmation sampling, additional excavation may be required. AMEC Earth & Environmental, Inc. Project No.: 061M116854 2 K'.\11000\1160011685\116854 Front Percel\Trect B\Perrr ts\CWS\CWS Cover Letter.Docx Request for Service Provider Letter Former Coe Manufacturing Facility ame0 Tigard, Oregon Enhancement Plan Vegetation in the project area currently consists of non-native invasive species, including blackberry (Rubes armeniacus) and reed canarygrass (Phalaris arundinacea). Vegetation will be removed in select areas to allow for equipment access. Vegetation removal will consist of removal of blackberry and herbaceous species. Native trees and shrubs, if observed, will be avoided. After completion of the removal action, any disturbed areas will be replanted or seeded with appropriate native Oregon riparian herbaceous species. Disturbed areas are shown in Attachments 3a, b, and c. Removed vegetation will be replaced at a 1:1 (impacted:replaced) ratio. PROJECT SCHEDULE ODFW has granted an extension of the in-water work window for the project through November 30, 2011. AMEC will endeavor to complete the removal activities as soon as is practicable after final approvals are received from DEQ and the other permitting agencies. The in-water removal work is anticipated to be completed in two to three days. Due to anticipated flow volumes from stormwater during the rainy season, the preferred timeframe for in-water work is early to mid October. It is crucially important to our client to complete the removal action prior to the close of the extended 2011 in-water work period. If the proposed removal effort is delayed until the next available in-water work window (i.e., July 2012), creek sediments would likely be mobilized downstream and re- distributed during the rainy season. ODFW has expressed their preference to have the contaminated sediments removed as soon as possible to avoid potential mobilization downstream into Fanno Creek. In addition, as the former owner of the Coe Manufacturing property, our client is contractually and financially obligated to the current property owner to obtain DEQ closure of the property. Delaying the removal until 2012, would require prior investigation sampling efforts to be updated or redone, which our client does not have the financial resources to complete. Please contact the undersigned, if you have any questions or require additional information. Sincerely, AMEC Earth & Environmental, Inc. /7 -7 ,..1, C‘....1 C27. 10! 1 , Charles T. Esler, CHMM Joel L. Eledge, CH / Principal Environmental Scientist Attachments: AMEC Earth & Environmental, Inc. 3 Project No.: 061M116854 K:\11000\11600\11685\116854 Front Parcel\Tract 6\Permits\CWS\CWS Cover Letter.Docx Request for Service Provider Letter all)e Former Coe Manufacturing Facility Tigard, Oregon Clean Water Services Sensitive Area Certification Form Existing Conditions Site Map Proposed Conditions Site Maps MVT c: Arthur E. Johnstone, RealNet Investments, LLC AMEC Earth & Environmental, Inc. Project No.: 061M116854 4 K:\11000\11600\11685\116854 Front Parcel\Tract 8\Permits\CWS\CWS Cover Letter.Docx `z, Clean Water Services File Number Clean Water Services 1 11-000217 Sensitive Areas Certification Form 1. Property Information (example 1S234AB01400) 2. Owner Information Tax lot ID(s): Tax map 2S101CA Name: Wayne Gould Tax Lots 00400 and 00700 Company: Gould Family Properties VI, LLC Address: 527 Atando Ave Site Address:7930 SW Hunziker St City, State,Zip: Charlotte, NC 28206 City, State,Zip:Tigard, OR 97223 Phone/Fax: 704-342-4321/704-342-0325 Nearest Cross Street: SW Wall St E-Mail:wgould @turretsteel.com 3. Development Activity(check all that apply) 4. Applicant Information ❑ Addition to Single Family Residence(rooms,deck,garage) Name:Arthur Johnstone ❑ Lot Line Adjustment ❑ Minor Land Partition Company: RealNet Investments, LLC • Residential Condominium ❑ Commercial Condominium Address: 9570 SW Barbur Blvd ❑ Residential Subdivision ❑ Commercial Subdivision City,State,Zip: Portland, OR 97219 El Single Lot Commercial ❑ Multi Lot Commercial 503-459-4732 Other Time-critical remedial action conducted under Phone/Fax: DEQ oversight E-Mail:artj @hevanet.com 5. Check any of the following that apply to this project. 6. Applicant Information d Adds less than 500 square feet of impervious surface. Name: ❑ Company: Does not encroach closer to the Sensitive Area than exist- ing development on the property. Address. © Is not located on a slope greater than 25%. City,State,Zip: Phone/Fax: E-Mail: 7. Will the project involve any off-site work? ❑Yes CI No ❑Unknown (check appropriate box) If yes, location and description of off-site work Not applicable. 8. Additional comments or information that may be needed to understand your project The project purpose is to perform a time-critical remedial action, per DEQ direction, to mitigate outstanding ecological risk posed by contaminated sediments and upland soils. Remedial action consists of removal of approximately 45 to 75 cubic yards of contaminated sediment from Red rock Creek below the ordinary high water The anticipated tfrri to complete In-water work is 72 hours. 2550 SW Hillsboro Highway • Hillsboro.Oregon 97123 • Phone:(503)681-5100 • Fax:(503)681-4439 • www.cleanwaterservices.org Revised 5/08 Mme OM : ART JOHNSTONE FAX NO. : 503 245 3320 yep. 23 2011 04:10PM P1 Clean Water S ervices File Number I Sensitive Areas Certification Form (continued) 11-000217 9. An on-site,water quality sensitive area reconnalsaanco was completed on Date By Title Company Desktop review conducted only,per Oregon DS(.agreement 10. Existence of Water Quality Sensitive Areas (check all appropriate boxes) As defined in the Districts Design and Construction Standards: A. Water-quality-sensitive areas Qdo Qdo not exist on the tax lot. B. Wet. eterquality-sensitive areas �fx do 0do not exist within 200'on adjacent properties.or ['unable to evaluate adjacent property. C. Vegetated c ocridorsr3 do(23• SF) ado not exist on the tax lot. D. Vegetated corrddors[xj do []do not exist within 200'on adjacent properties,or CI unable to evaluate adjacent property. £, Impacts to sensitive areas andior vegetated corridors will occur Qx On-site Q Off-sRe 0 None proposed at this Time. F. if impacts,mitigation is 00n-site QQfi site ['Other it- Simplified See Assessment containing the following Information:(check only Aetna whmCted). Please refer to Design and Construction Standards 07-20 section 3.022 for application requirements. 0 Complete Certification Form(2 pages) .Written description of the site and proposed activity. . f] Site plan of the entire property. Q Photographs of the site labeled and keyed to the site plan. 12. Standard Site Assessment containing the following information:(check only items submitted). Please refer to Design and Construction Standards 07-20 section 3.02.2 for application requirements, Q'Cornptetre Certification Form(2 pages) ©:Written description per Design and Construction Standards 07-20 section 3.13.3 b.1 • Q•Wetland Data sheets Q Vegetated Corridor Data sheets [''Existing Site Condition Figures fl Proposed Development Figures • By signing this four the Owner,or Owner's authorized agent or representative,acknowledges and agrees that employees of Clean Water Services have authority to enter the project site at all reasonable times for the purpose of Inspecting project elte conditions and gathering information rotated to the project site. I certify That I am familiar with the information contained in this document,and to the best of my knowledge and belief, this in k melion is true,complete,and accurate. Applicant: ArthurJyr stone Representative of Rea{Net Investments,t tC • Peintfl' 94 1l /r '� Print/Type Title Flt . September 23,2011 Signature 41, . O ReDeed sne [x]..■w • 1 • e S • E-32 ) 1 II - IA ,, -.....------. ....., ,- ,... 01,... Figure 4 r 2S101CA00700 ,I (Tract B) - ,' 1 Figure 3 �. t I • � 2S101CA00600 l •� _`1 l I, L. 4- I l Former Hazardous L s Waste/Petroleum Figure 6 { _. sa Storage Area f `, x ' - >w — , a . I t. I. zr n co 2S101CA00500 Compressor Shed , , Building#1 i,„' 1+ ' � ' ” .> S Offices ht:" � : c .. ;:a '"� . d x 25101 CA00400 .`- ,R • -:-=se .3 . ' (Front Parcel) I SW-Wall St. . _ �J/ LEGEND: 0 ---- REDROCK CREEK ® SITE BOUNDARY CITY OF TIGARD LOCAL WETLANDS INVENTORY TAXLOT BOUNDARY 0 50 100 200 SIGNIFICANT WETLAND Feet 1 PURPOSE:Remedial action performed under Oregon DEO oversight APPLICANT REFERENCE:To be determined PROPOSED:Removal of approximately 45 10 75 cubic yards of contaminated sediment below the ordinary high watermark,per DEO approved Remedial Action Work Plan;Removal of LOCATION: approximately 71 cubic yards of contaminated soil from upland area above ordinary high watermark. DATUM:NADB3 7930 SW Hunziker St,Tigard,Washington County,Oregon IN:Redrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS: To be determined_ COUNTY:Washington STATE:OR APPLICATION BY:Gould Family Properties IV,LLC NOTE:City of Tigard wetlands inventory data obtained from City of Tigard. PROJECT AREA: SHEET:2 of 5 DRAFT45°25'36 930"N 122°45'33.290"W 'DATE:September 2011 K111000.11 I ISa51116051)0LTFront Parma MeglTract u 104069993/1a13/0Fyue 2•Rolea Me On1New.116E-stephane 4esmnbes-912211011-1.45.35 PM LEGEND: Ig APPROXIMATE CATCH BASIN LOCATION APPROXIMATE LOCATION OF TURBIDITY CURTAIN 0 APPROXIMATE MANHOLE LOCATION AREA OF LIMITED VEGETATION REMOVAL FOR CREEK ACCESS AND RESTORATION A APPROXIMATE STORM SEWER OUTFALL LOCATION (see Detail C-5) APPROXIMATE STORM SEWER LINE ---- PROPOSED TRANSPORTATION ROUTE TRACT B(Taxlot 2S101CA-700) .- .-=air SHEETPILE CHECK DAM° 0+00 STATION DESIGNATION 25ft.Interval) (see Detail C-3) 1 PROPOSED SEDIMENT REMOVAL AREA Section B Downstream Turbidity Curtain Section A Downstream Turbidity Curtain Section B Section A Section B Upstream Turbidity Curtain <r; 0•75 (i4 0+6D r T r 5 • c!•wul ."" •e I • __ +--Direcffon of Stream Flow .— L J 0 ' --."--..'i . saa o 15 30 firgFV:_170-.4'*V'''', - Feet ..-' - - -, a PURPOSE:Remedial action performed under Oregon DEO oversight. APPLICANT REFERENCE:To be determined PROPOSED:Removal of approximately 45 to 75 cubic yards of contaminated sediment below the ordinary high watermark,per DEO approved Remedial Action Work Plan;Removal of LOCATION: approximately 71 cubic yards of contaminated soil from upland area above ordinary high watermark. DATUM:NAD83 7930 SW Hunziker St,Tigard,Washington County.Oregon IN:Redrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS: To be determined. COUNTY:Washington STATE:OR APPLICATION BY:Gould Family Properties IV,LLC NOTE:'Bypass pumping maybe used to transfer streamflow to below work area PROJECT AREA: SHEET:3 of 5 DRAFT 45.25'36.930"N 12r 45'33290•w DATE:September 2011 K111000M ISOM 1635111635101/1.FrB Parcel Maps1Trac10 Ramoro5JARPA\Fiowe 3-Proposed 5edmenl Removal Arms A-0 mad-clepnSne dammbs-90111011-1 43:33 PM Downstream Secondary Turbidity Curtain LEGEND: IA APPROXIMATE STORM SEWER OUTFACE LOCATION -- - APPROXIMATE LOCATION OF TURBIDITY CURTAIN Section E Downstream Turbidity Curtain See Detail , APPROXIMATE STORM SEWER LINE AREA OF LIMITED VEGETATION REMOVAL CITY OF TIGARD """„' FOR CREEK ACCESS AND RESTORATION (see Detail C-5) MATTING LOCAL WETLANDS INVENTORY SIGNIFICANT WETLAND Section E Section D '' TRACT B(Taxlot 2S101 CA-700) ---- PROPOSED TRANSPORTATION ROUTE 0.00 STATION DESIGNATION(25ft. Interval) "oo ' + (see Detail C-3) E 32•i_ / PROPOSED SEDIMENT REMOVAL AREA rII4 Section D Upstream Turbidity Curtain yam+:, quo Section C Downstream Turbidity Curtain t t Section C Upstream Turbidity Curtain i See Detail 0 . I t �'' Cross Section A I See Detail t ® ��\ F Section C I dire Cti. Of sire 'xn2 L °177. t t See Detail® A 0 0 15 30 60 Feel PURPOSE:Remedial action performed under Oregon DEO oversight. APPLICANT REFERENCE:To be determined PROPOSED:Removal of approximately 45 to 75 cubic yards of contaminated sediment below the ordinary high watermark,per DEO approved Remedial Action Work Plan:Removal of LOCATION: approximately 71 cubic yards of contaminated soil from upland area above ordinary high watermark. DATUM:NAD133 7930 SW Hunziker St,Tigard,Washington County Oregon IN:Redrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS: To be determined. COUNTY:Washington STATE:OR APPLICATION BY:Gould Family Properties Iv,LLC NOTE:City of Tigard wetlands inventory data obtained from City of Tigard. PROJECT AREA: SHEET:4 of 5 DRAFT 45.25'36.830'N 122.45'33.290•W DATE:September 2011 K111000.111.0.116ES11a651.....Fron PM N.p.1T,.c1 B RemevesJPRru1rio,.A-Proposed aeamenl Removal Ness GPE.ma i-.1epl ane demonizes-a1Z2/2011-2.305a RA LEGEND: A APPROXIMATE STORM SEWER OUTFALL LOCATION — - - APPROXIMATE STORM SEWER LINE V/j PROPOSED SHALLOW SOIL REMOVAL AREA L__ TRACT B(Taxlot 2S101CA-700) A I Section 4 Section 3 I' 8 � Section 2-Al- wit ■ Section 1 BB M ‘ 0 15 30 60 Feet PURPOSE:Remedial action performed under Oregon DEQ oversight. APPLICANT REFERENCE:To be determined PROPOSED:Removal of approximately 45 to 75 cubic yards of contaminated sediment below the ordinary high watermark,per DEG approved Remedial Action Work Plan,Removal of LOCATION: approximately 71 cubic yards of contaminated soil from upland area above ordinary high watermark. DATUM:NAD83 7930 SW Hunziker 5t,Tigard,Washington County,Oregon IN:Redrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS: To be determined. COUNTY:Washington STATE:OR APPLICATION BY:Gould Family Properties IV,LLC PROJECT AREA: SHEET:5 of 5 45'25'36.830"N DRAFT 127 45'33.290"W DATE:September 2011 K010001I SOW 1685\1I6a510A.Frorl Parcel Mapa\rrecl aPemov.BJMPAIFloure5-Proposed Snelow Fall Perrovel•r.es me4 %Mplenea. ,tec-92212011-12'41'4 PM F :._ Department of Environmental Quality regon \. � . : : Nortwest Region Portland Office 8 59% John A.Kitzhaber,MD,Governor 2020 SW 4th Avenue,Suite 400 Portland,OR 97201-4987 (503)229-5263 Fax: (503)229-6945 September 2, 2011 TTY: (800)736-2900 Arthur Johnstone Representative for Coe Ownership Group 8029 SW Devon Lane Portland, OR 97219 Re: Redrock Creek Sediment Removal Action Coe Manufacturing Property—Tract B 7930 SW Hunziker Road, Tigard, OR ESCI #983 Dear Mr. Johnstone, Oregon Department of Environmental Quality (DEQ) Cleanup Program staff have reviewed sediment results provided by your consultant(AMEC), and evaluated those results in light of your desire to move forward with remedial action to address elevated concentrations of polychlorinated biphenyls (PCBs) and metals found in Redrock Creek sediments adjacent to your site. DEQ's review and analysis have been performed in accordance with an Independent Cleanup Pathway (ICP) agreement dated October 16, 2006, and signed by Scott Fouser of RealNet on November 15, 2006. In order to enable an effective remedial action that will provide near-term positive impacts to sediments in Redrock Creek, DEQ is approving a removal action under authority per Oregon • Revised Statutes (ORS) 465.260. Significant investigation has occurred along the reach of Redrock Creek that borders the west side of the Coe Manufacturing property and in site upland areas where elevated concentrations of metals and polychlorinated biphenyls (PCBs) were apparently released during the past industrial uses of the site. In addition, the party managing the cleanup, the Coe Ownership Group, has already completed upland soil removal in areas impacted by historic releases that posed a threat to site workers, and a potential ongoing threat of release to the creek. Sediment data collected in Redrock Creek shows that detectable concentrations of PCBs and metals are present in areas where runoff from the Coe Manufacturing area has impacted the creek, and also in upstream and downstream samples, indicating that there are likely other sources that have contributed to the sediment contamination present in the creek. DEQ, through discussions with the Coe Ownership Group, has determined that a removal action that can be implemented prior to closure of the in-water work window' will provide significant exposure risk reduction in a timely manner that is conducive to their desire to make progress on the site and is sensitive to their financial situation. It is important to note that the in-water work window for the Tualatin basin tributaries closes on September 30, 2011. 'Based on the document"Oregon Guidelines for Timing of In-Water Work to Protect Fish and Wildlife Resources," Oregon Fish and Wildlife Department,June,2008. Coe Mfg. — Redrock Creek Sediment Removal 2 September 2, 2011 In order to identify an effective sediment removal action that will remove contamination that is clearly elevated and sourced from the Coe Manufacturing site, DEQ has calculated site-specific background concentrations that represent the ambient influences from other point and non-point sources in this industrial area of Tigard. The background sediment concentrations for site- related contaminants of concern have been considered in guiding the selection of removal standard for the site that will be protective of human and ecological receptors, and focus on those sediments clearly impacted by releases from the past operations on the Coe facility. The analysis used to identify removal standards for the site is consistent with both DEQ rule and guidance, but acknowledges the unique nature of the site (a small impacted area within an industrial setting, contaminant"contributions"from one of more off-site sources, the benefits from early action, etc.). The removal action is intended to allow for significant improvement to the sediment and reduce exposures to Redrock Creek biota and fauna that live in and around the creek. Following the removal, the Coe Ownership Group and their consultant will perform a residual risk assessment and, if needed, a focused feasibility study that will define the remaining risk and evaluate options to further reduce risk if required. If the values outlined below are met through the removal action, and confirmatory samples do not exceed same, it is DEQ's expectation that the risk posed by PCBs and metals in Redrock Creek will have been adequately addressed. To guide the definition of the sediment removal area that will reduce sediment concentrations of polychlorinated biphenyls, lead (Pb) and zinc (Zn) and that will be beneficial to ecological species in and around RRC, DEQ is using Probable Effects Levels (PELs)2 for lead, zinc and PCBs. The following PELs for freshwater sediments will be used to guide the sediment removal action: Lead—91.3 mg/kg Zinc—315 mg/kg PCBs—0.277 mg/kg Threshold effect levels (TELs) are used by DEQ as sediment screening levels to indicate the potential for benthic toxicity. Sediment concentrations of lead, zinc, and PCBs exceed TELs at the site. Typically a risk assessment is performed to more definitively identify areas of concern. Sediment bioassays are sometimes conducted to further characterize risk.At this site, DEQ and Coe Ownership Group have agreed to accept that there is an unacceptable risk to benthic organisms, and to focus on removal actions. Given the relatively small areas of impact, DEQ determined that PELs are appropriate remediation levels to protect the environment. Potential bioaccumulation impacts on fish, birds, and mammals were also considered by comparing site sediment concentrations with DEQ sediment bioaccumulation screening levels3. Most sediment samples collected adjacent to and upstream of the Coe site had detected chemical concentrations above screening levels. However, because of the plan to remediate sediment based on potential threats to benthic organisms, the highest concentrations of chemicals in sediment are targeted for removal. The contaminated areas that will remain after removal appear to be relatively small compared with the local population areas of fish, birds, 2 Sherri L.Smith et al.,A Preliminary Evaluation of Sediment Quality Assessment Values for Freshwater Ecosystems,J. Great Lakes Res.,22(3):624-638, 1996. 3 DEQ,Guidance for Assessing Bioaccumulative Chemicals of Concern in Sediment,April 3,2007. Coe Mfg. — Redrock Creek Sediment Removal 3 September 2, 2011 and mammals used for evaluating bioaccumulation impacts. For this reason, DEQ determined that it is not necessary to remediate all sediment to bioaccumulation levels. STATEMENT OF WORK FOR REMOVAL ACTION PLAN AND IMPLEMENTATION: a. Coe Ownership Group will direct AMEC to prepare a Conceptual Site Model that defines the areas of sediment in Redrock Creek that have been impacted by releases from historic industrial activity at the Coe Manufacturing Site. Areas identified as being impacted by site activity will be determined to be within the Locality of the Facility. Assumed impacts from off-site sources will likewise be identified. b. Coe Ownership Group will direct AMEC to define the boundaries of sediment removal areas in Redrock Creek that exceed the remedial action goals (the PELs) and submit a plan to DEQ that defines the removal area(s), describes the measures that will be used to perform the removal, and proposed locations of confirmation samples. The Coe Group and AMEC may consult with DEQ prior to finalizing the plan. c. DEQ will review the removal action area determined by AMEC and the Coe Group to determine if it meets the removal action criteria noted above and then approve the proposed removal area. When DEQ issues the approval we will also issue a press release and public notice announcing our decision. d. As part of the removal action, AMEC will collect confirmation samples that will be used to evaluate the effectiveness of the removal and in assessing post-removal residual risk. e. Post-removal, the Coe Ownership Group will produce a Removal Report and Residual Risk Assessment, the latter of which will determine the level of residual risk for human and ecological species on the site based on upland soil and sediment remedial and removal actions. f. If the Residual Risk Assessment demonstrates that actions to date are protective of human health and the environment, DEQ will proceed with site closure. If unacceptable residual risk is identified, additional action including a Focused Feasibility Study to identify a final site remedy will be necessary. g. At the time that DEQ is prepared to issue a final closure and no further action notice, we will need to provide for a 30-day public comment period that will allow public input into our final remedial decision for the site. DEQ appreciates the work you have completed so far at the former Coe Manufacturing site. If you have questions please contact me at (503) 229-6431 or by email at harman.charles@,deq.state.or.us. If you have an urgent question and I am not available, please contact Dan Hafley, as he has authority to make project decisions for this site. Sincerely, Chuck Harman, Acting Manager NWR Cleanup Program cc: Mike Poulsen, DEQ NWR Cleanup Dan Hafley, DEQ NWR Cleanup Joel L. Eledge, AMEC ECSI File#983 ADDITIONAL DOCUMENTS Gary Pagenstecher From: Gary Pagenstecher Sent: Monday, October 17, 2011 8:40 AM To: 'Eledge, Joel'; Ron Bunch Cc: Esler, Charles T; Art Johnstone Subject: RE: Coe Manufacturing - DRAFT of DEQ Removal Action letter to Coe Owners Joel, Thank you for the amended findings, submittal of the CD and hard copy of the Work Plan. Your application is now complete.The Community Development Director will review and sign the MOU and the Sensitive Lands Review Permit will be issued this week. Gary From: Eledge, Joel [mailto:joel.eledge @amec.com] Sent: Friday, October 14, 2011 3:06 PM To: Gary Pagenstecher Cc: Esler, Charles T; Art Johnstone Subject: RE: Coe Manufacturing - DRAFT of DEQ Removal Action letter to Coe Owners Gary, Please find attached AMEC 's revised Sensitive Land Use Review Criteria Letter which addresses the standards in 18.775.070.D. I will be leaving the office for the weekend after I send this email, but will be stopping by your office to deliver the hard copy of the Work Plan and the deliverables CD which you requested. I will be back in the office on Monday at Sam. Feel free to contact me or Chuck Esler if you have any questions or need additional information to complete your review and approval of the proposed Removal Action. Regards, -Joel Joel Eledge, CHMM Environmental Scientist AMEC Earth & Environmental 7376 SW Durham Road Portland, Oregon 97224 (Tel) 503.639.3400 (Fax) 503.620.7892 (Mobile) 503.730.7456 mailto:joel.eledge@amec.com From: Gary Pagenstecher f mailto:Garyp@tigard-or.govl Sent: Friday, October 14, 2011 12:15 PM To: Eledge, Joel Subject: RE: Coe Manufacturing - DRAFT of DEQ Removal Action letter to Coe Owners http://www.tigard-or.gov/business/municipal code/docs/title18/18775"1.pdf 1 fide s c iTeoit / NT oho DEPARTMENT OF THE ARMY RECEIVED 4�4 ` 1/8 \2 PORTLAND DISTRICT,CORPS OF ENGINEERS OCT `' 8 2 011 1\a ,'`tlI;' %P POST OFFICE BOX 2946 O AGr ` PORTLAND,OREGON 97208-2946 CITY OF TIGARD ,oSrgr�tU,,p REPLY ATTENTION October 27, 2011 PLANNIKVENGINEERING ATTENTION OF: Operations Division Regulatory Branch Corps No.: NWP-2011-433 ei?,( . Mr. Arthur Johnstone RealNet Investments, LLC 9570 SW Barbur Blvd Portland, OR 97219 Dear Mr. Johnstone: The U.S. Army Corps of Engineers(Corps)received your request for Department of the Army authorization to remediate contaminated sediment in Red Rock Creek. The project is located in Red Rock Creek, 7930 SW Hunziker Street, in the City of Tigard, Washington County, Oregon(Section 2 South, Township 1 West,Range 1 West). RealNet Investments, LLC will remediate contaminated sediment in various locations in Red Rock Creek. As part of stream isolation, a temporary check dam will be constructed. The dam will consist of 25 cubic feet of sand bags which will be placed within an area of 0.00054 acre below the ordinary high water line of Red Rock Creek. There is no permanent fill associated with the project. The project is shown on the enclosed drawings(Enclosure 1). This letter verifies that your project is authorized under the terms and limitations of Nationwide Permit(NWP)No. 38 (Cleanup of Hazardous and Toxic Waste). Your activities must be conducted in accordance with the conditions found in the Portland District NWP Regional Conditions(Enclosure 2)and the NWP General Conditions(Enclosure 3). You must also comply with the Oregon Department of Environmental Quality(DEQ) Water Quality Certification Conditions (Enclosure 4) and the project specific condition lettered (a)below. Failure to comply with any of the listed conditions could result in the Corps initiating an enforcement action. a. Permittee shall notify the Regulatory Branch with the date the activities authorized in waters of the United States are scheduled to begin. Notification shall be sent by email to cenwp.notify @usace.army.mil or mailed to the following address: U.S. Army Corps of Engineers CENWP-OD-GC Permit Compliance, Washington County PO Box 2946 Portland, Oregon 97208-2946 - 2- The subject line of the message shall contain the name of the county in which the project is located followed by the Corps of Engineers permit number. We direct your attention to NWP General Condition 25 (Enclosure 3)that requires the - transfer of this permit if the property is sold, and NWP General Condition 26 that requires you to submit a signed certificate when the work is completed. A"Compliance Certification" is provided(Enclosure 5). We have prepared a Preliminary Jurisdictional Determination(JD),which is a written indication that wetlands and waterways within your project area may be waters of the United States (Enclosure 6). Such waters have been treated as jurisdictional waters of the United States for purposes of computation of impacts and compensatory mitigation requirements. If you concur with the findings of the Preliminary JD, please sign it and return it to the letterhead address within two weeks. If you believe the Preliminary JD is inaccurate, an Approved JD maybe requested, which is an official determination regarding the presence or absence of waters of the United States. If you would like an Approved JD,one must be requested prior to starting work within waters of the United States. Once work within waters of the United States has been started,the opportunity to request an Approved JD will no longer be available. This authorization does not obviate the need to obtain other permits where required. Permits, such as those required from the Oregon Department of State Lands (DSL)under Oregon's Removal/Fill Law, must also be obtained before work begins. This verification is valid until the NWP is modified,reissued, or revoked. All of the existing NWPs are scheduled to be modified,reissued, or revoked prior to March 18, 2012. It is incumbent upon you to remain informed of changes to the NWPs. We will issue a Public Notice when the NWPs are reissued. Furthermore, if you commence or under contract to commence this activity before the date the relevant NWP expires, is modified or revoked,you will have 12 months from the date of the modification, or revocation of the NWP to complete the activity under the present terms and conditions of this NWP. We would like to hear about your experience working with the Portland District, Regulatory Branch. Please complete a customer service survey form at the following address: http://per2.nwp.usace.army.mil/survey.html. - 3 - If you have any questions regarding this NWP verification, please contact Mr. Brian A. Villalon at the letterhead address, by telephone at (503) 808-4368, or e-mail: Brian.A.Villalon a)usace.army.mil. S' ccrely, r James A. Holm Team Leader Regulatory Branch Enclosures Copy Furnished: Oregon Department of State Lands (Huffman) Oregon Department of Environmental Quality(Saxon) AMEC Earth and Environmental, Inc. (Ester) t _ TIAr�rs+ F� a .t t.'l. } n. ' .. . r« s, --t:tcl .a'. . , i ,, e .t . «4- , emu- LEGEND: '�1 r 1.4�ra #b- .µ "} ® SITE BOUNDARY M .°. tea. tw f a . ' t r i .y war,+�.. 1 ` ' `�i$' M"z J %1 .131+�1.111 v ":ga*l' '' } 41.4 Ak 1.1.-;" ,f t Xx 1,t r. ka "` ' r � �::i• '7 9 i 6.4....r ' ) viT^ 3,.- , f/q . ;'c :.. . o•/i ~, iaRi ..e set w•1 } r.1 .# C b / . ✓.i. ',.to, .7"• is • 3 w. 1 rtj l., X71 ,_'....1:::4:11$ k _ a .> °r }.,• t! 4, 1.....,... "1 f' b •.! .a a.,-.t4 rte, !- n . i e• f• ♦• f M - � / Cl -.. ✓ "I k : "�M�,, . ,,,,,,-;,„ #a d 1 :. :,.* r.\r -- a fr m 4x5./4+dt`. "' a1 `T' M 4 M' '"w�` �4• "�`1-' F X79 1,14,4 w4:ry R�4.+ �r. �+ M s,. d. r sit }' • f is y a4 a:., 1 ,r�-, '''', 1 ''lig { . V� i i .-Noo.F ?" r r +>< • I r t r} -1' » S` t >ffi.s 't ., ,,,,7 . , ,. -$rA it .„4,,•,,** •i'tc•t"Rrd 1}.4 1,• . IX iti= b N 'Sad : Mi , .w.,g '' y�G....< ' st er s �°i,iM 9t ° 'v Vin ■ :.3 ' i '..' .,.., .„.,.. :..4..:;...„4,;,,,.44.. „ e ..- , .‘„,,,, a- ...s t....1-...., .,. a..yy,.t .} s.%, A fix -k , ►* \`•'7• ♦ r , iM td • - K 4 Y'rg y / ' ' r „$� uN }•1 �'i . sIcd ;.,104, �. :Mn W+ 1 ,a ' C" + '. .,1 % •.•,„. " aar 1 y G ;r ..,. s ,r i Y s y, $ ,w 1.s e t ` s 4 .'" • ._ * a �•3' e • 8 " , $ y, !µ` vaF.{rp ,, X+-', ' ° -?'-',"it` .'t. , :a° + e d T -.`wt S :& + r• } tt 4 ,N; 1e� T ' � ,�� v E il- • f� �YY.47 ' , , ' I � } �b1 � ir.e* w a ; , a ;'. :l °Nag!.7 a k. , _...16 - . % i- :, a � .._ f .,., ' - Y a r t t. 1 ,.i a n d • € • . 1..... ,... p. ,• `: M . �w., . „, ,*t n ii: T*; (e T � tµ .., _ 1y .,-.r • -, i .i... + t F [.-.4 T eti f " le 4, :v,' qN PROJECT AREA. 45°25'38.830'N 122°45'33.290'W D 0 RAFT ° _°=-00 a'°Feet URPOSE'Remedial action performed under Oregon DEO oversight APPLICANT REFERENCE.To be determined PROPOSED:Removal of approximately 46 to Tb cubic yard*of contamkiated sediment below the ordinary high watermark,per CEO DATUM:NADO3 LOCATION: approved Ramadan Acdon Work Plan;Removal of app cslmatsy 71 wblc 7930 SW Hu rolker St,Tigard,Washington County,Oregon yards of contemkyted sal ham upland use above ordkury hfph watermark. ADJACENT PROPERTY OWNERS: To be determined IN:Redr«k Creek NEARJAT:Nora COUNTY:waahington STATE:OR APPLICATION BY:Gould Family Properties IV,LLC SHEET:I of 5 DATE:Septamhr 2011 Kt1100f.\11600111685\116851\DWGWFroot Parcel Meps\Tract B RemovalUARPA\Rgure 1-Site Location Map.mzd-rtaphane.deecomoes•9/22/2011-11:58:17 AM NWP-2011-433 Enclosure 1 a ' mod' E a A t v } t ill% d e. 4�y •. kr.,+r. t:S* rS:,. .. _s• r #, t :+ry... ' �♦ v. fl .Yt m ft- 'b a.I 1 l`2S1 01 CiomAQ07Q0` m -:. _ ,3_ - #.-y• °2 Ei32• y .. A.•v . r e £'k ; i `t .l" . s ' „, a•,.. ti;:„.'.. 7-1.' li,i,--. `+�w T ` ? K .s ! K =r c . ' -� .Y.a ,..: v.,. I isa4. . a af2* 4 a- 1** h. x x: +a,- s , i. . ' q 'Figure 4 ,c z , .i n f<. . a,+r �?aT 3 *� a a ,, n za .•_, f it. i st ,, �.v. r' z `R- 9,,i4 r X 's;i ry = r' -K-i --a.%• C.) 4'e dir (Tract B),•.'',,p aE sea• _ c y t,st - -J firr 3 "a+ i&k. -• te.! • ` ,gy v �ry ,-,, * r • . — °" `1,. r zsef te' ; 1 F� , rsse , r 1_ t ti t � I d ;f ;...„1",:-_-:,"3�rt 2CA �,�� I ., r es- , . ''10444. .rs.` "'` + t r5.-i ` ` '°h 7 r - :' �& r ...'7,----1' I n. tF:fi ^� a yr _. I .- }_ _ — Former Hazardous . Waste/Petroleum — \ 1 119,rr.•r s a:i Storage Area o m I .. I ' c N I 2S101CA00500 Compressor Shed It :. Building#1 _ , - • : Offices I I 2S101CA00400 ti .; F w , , • (Front Parcel) . ., __..—� 'e44x"Te '� t� . y.� ''''.1...1'.',0-.."":.` +•-,l.i .fit u:; .. '\_______ , --- ------- ---SW W St - al LEGEND: CO ..... \ i ---- REDROCK CREEK ® SITE BOUNDARY a<a� t 1T1 CITY OF TIGARD LOCAL WETLANDS INVENTORY J TAXLOT BOUNDARY -• .,' . 0 SO 100 200 n SIGNIFICANT WETLAND #r fq ±- Feet 1 cn C PURPOSE:Remedial action performed under Oregon DEO oversight. APPLICANT REFERENCE:To be determined PROPOSED:Removal of approximately 45 to 75 cubic yards of conta mina kid sediment below (p the ordinary high watermark,per DEO approved Rerr,ed al Aabn Work Plan;Removal of _a LOCATION: approdmately 71 cubic yards of contaminated sal from upland area shove ordinary high wetennerk. DATUM:NAD83 7930 SW Hunziker SI,Tigard,W avNngton County,Oregon IN:Redrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS:To be determined. COUNTY:Washingbn STATE:OR APPLICATION BY:Gould Family Properties IV,LLC NOTE:Cdy of Tigard wetlands inventory data obtained born City of Tigard. PROJECT AREA: SHEET:2 or 5 45 25'3e.e301 ti DRAFT 127 IS 33.290'W DATE:September 2011 0 tnam,,W„YSU,e15,OwOIu.n 0 Sr.rM1ou LaMw�PUFlida.n.,..+Ls aw.....,r•..p.n.wnu,a...Sni t-,ASEw ` T.T. LEGEND: r III APPROXIMATE CATCH BASIN LOCATION -4--1-1- APPROXIMATE LOCATION OF TURBIDITY CURTAIN ,, Ni,,,:, > a .tom -+N• t r ' s t E Z • APPROXIMATE MANHOLE LOCATION AREA OF LIMITED VEGETATION REMOVAL a • " 1 FOR CREEK ACCESS AND RESTORATION t a '' 1b A APPROXIMATE STORM SEWER OUTFACE LOCATION (see Detail C-5) a " a " w � .Grp « ... 111 gin, o APPROXIMATE STORM SEWER LINE ---- PROPOSED TRANSPORTATION ROUTE .. , i j° [] TRACT B(Taxlot 2S101CA-700) �'` r ro R a"yS" .rrrr SHEETPILE CHECK DAM' + x _ - W �1p i_ STATION DESIGNATION 2511 Interval) 7, f ' 1' -,"s " ..' 4'` " •+'F W F f-+ (see Detail C 3) ( ) y r ° £ �' ` M . y.... ,;44,,,,,,,.....-,..,„,4,,....,,,,,--- PROPOSED SEDIMENT REMOVALAREA W P �z. x v;..„ tt�` yr e c r + � � ' t. �'r'a 'e'^s=«wy'r :.at .. y,��,g..r .. ' yam- t " 6 � ,,.fr' �.et _- p� ��,," to • Section 8 Downstream Turbidity Curtain l 9 e y,. '` s . . t :...-3!1•' :p,-'qq ♦a�tif';S-'vb, a_ �r< •a:y ro.r a•r+.. .;0+0r0 F�, � 1 • '' ' - Ow Section Downstream Turbidity Curtain by , .i y l ._. •/ _ ;r 9" r` se �+x1`g i f k 4� . r " a . .>Section;6', :+t0.om.a• �, ,,,,,,,,,,4,,s...? . ''<„ ' ..-r ' i ) w.:.7'ar w.A s -_s 'Sectionf ,d 7ii.itorw v s z.. :r;•...-. %� .F � t , x z:: : r l v. te" � ,-' '' � A fiai'44' .±r• r , ;x .:. ''FY.. -I.'iv e'*'" '` ee t r G 0. �� � .9.: .� .1 8 Upstream Turbidity Curtain �: ,A t c -k f.,r ?o t � r s . t " r> r� -a a n a6 F.v ' w '� 1r00 7; r v-�U w -, xj l h :::-.-.4--_;,,, I r - ie '( T i t 4,-1! ; i r � W .z9 ' 4 .:c ' a'R r 4 '4t a a' - ...J 4 ey i.YA of t . .� � .1 ' '• r .�: Jrs .3sYfyx'nr _. m v r r 'a5e.a+r� u4abt -..:aw } - •_ i L i . ■ ,.. +S - 5 a. 'S"'e0 � , ', C &.yx .h o 1 j t.I 3 °d "` a F k Ws xe1l w X1 ' .,. + } , , -0 , Y q .r-v--.-: : -. ,. . s„ ...-. ',. '.''Ar4'•1.. . -.A 7--* -..-fr,irt, .,........,..-.i.4 1,17,-;--',::, •-• - ' m 0 15 30 60 # tt l �k= a 7 Feel= t ( _. •*,o > - ' c� n o iii 5. role r C PURPOSE:Remedial action performed under Oregon DEO oversight APPLICANT REFERENCE;To be determined PROPOSED:Removd of eppror3nately 45 to 75 cubic y,rde of contaminated sediment below the ordinary high wstelmark,per DES approved Remedial Action Work Plan;Removal of LOCATION: approximately 71 cubic yards of contaminated sot from upland area above oreinary Idgh watermark. DATUM:NAD83 7930 SW MuWka St,Tigard,Washington County,Oregon IN:Aedrock Croak NEAR/AT:Tigard ADJACENT PROPERTY OWNERS: To be determined. COUNTY:Washington STATE:on APPLICATION BY:Gould Family Properties IV,LLC NOTE:'Bypr used pumping maybe to wander$lrearlNiow to below work area. PROJECT AREA: SHEET:3 of 5 DRAFT 45'25'38113r N 122' 5'4 33.290'W DATE:September 2011 'Kr em Ia100 Nea11610t�CWS.FuI YarlM,, raneawyovSJ ep/VVlw 0-r'n 165616rIlW!SYMw Mmd.kkiN..0066.000-0/.W11•l 13.33 PY , , {_nowt,.ream Secondary Turhidity Cur,1_� LEGEND: .. r A APPROXIMATE STORM SEWER OUTFALL LOCATION i'•I-I- APPROXIMATE LOCATION OF TURBIDITY CURTAIN ■ Section F Downstream Turbidity Ccrtaint z See Det9i r-_,:-\r'" -'- ----- - --- APPROXIMATE STORM SEWER LINE AREA OF LIMITED VEGETATION REMOVAL r'.x l m�FOR CREEK ACCESS AND RESTORATION / -- CITY OF TIGARD (see Detail C-5) LOCAL WETLANDS INVENTORY r‘..) , n \_ '''' r SIGNIFICANT WETLAND MATTING•SectfbR E Section D I TRACT B(TWdot 2S101CA-700) ---- PROPOSED TRANSPORTATION ROUTE °0� -�_ STATION DESIGNATION(25ft.Interval) 6ir t 32 :. (see Detail - trK* PROPOSED SEDIMENT REMOVAL AREA .. ,fib ;' a ",. q ,.. } 6 ,R.ae 44 44, #. 9 x' x -..,1,3*, y ' re ..: S e r,w 3ke> r} ,. '""'7 i. section D Upstream Turbidity Curtain £ , , s A:, y wa ,ty, ' ^+t .i/ r I5. .. may. - . h V . ,,„7 1 r ',i ri"' 4 C 9 B - "- '�`,r�1 '. "mac l��q% 'YfY�` *` <. Section C Downstream urtvdity�ur,ain - i 'tin, �i 2 • e .1, ,,, I _ tom .* - - $ecbun C.tlpstreamTuthidity Curtain i . t r" See Detaff 1 1 i sae Detail � , Cross Sect.o i A i �i '�, ... Section ., iio ` __ -vim _.• ..- ..4 r t S BB Derail d�.—`- - I —� -J y y = Oda• .........._._r r d q°fl T� ,f Iy } f S - ' r 1 �B6�Gi its': i _ • 0 15 30 80 m � � _.7 — , . Feet 0 C PURPOSE:Remedial action performed under Oregon DEO oversight APPLICANT REFERENCE:To he determined PROPOSED:Removal of approlrimately 45 to 75 cubic yards of eontamiretsd sediment below Fe the ordinary high warermwk,per MCI approved Remedial Aetbn Work Plan:Removal d -..� LOCATION: approximately 71 cubic yards d contaminated soh from upland ems above oidlnary high wrrlermelk. DATUM:NAD83 7930 SW rlunziker St.Tigard,Washington County.Oregon IN:Radrock Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS:To be determined. COUNTY:Washington STATE:OR NOTE:coy of Tigard wetlands inventory data obtained from City of Tigard. PROJECT AREA- APPLICATION BY:Gould Fam9y Properties IV,LLC SHEET:4 of 5 DRAFT 45.25'311830'N 12r 45 33260'W DATE:September 2011 s u 100a111a1 UAW I a.lwworr.Pon.MARV,.a iimma aapnny..*-My*.W a*e.ey Mee.NW tot.,..-81r1w.4444444..ra-arpae11-2 2051 tar •f. ..3nk ey: "n:+°y-`ors �� E:? 1._ a ..,�. +,, LEGEND: r 3 f a., fin*- 1` �.+.- r.. '"r . .t Il{k 1' ---- K3d 54 A } APPROXIMATE STORM SEWER OUTFACE LOCATION '- 4 .- t �-dot. ,- «r .v t A� K -• _ Z APPROXIMATE STORM SEWER LINE «� a t ¢ ' d't� +s" r ,,„4,,„,t " f a sa61r z _ 2 ee � t., � 1r�,tZ } �. �. p�7� ,r �' ti,' ^ar, :tb u i v u s '? 'i mgr r �w' '...4..'t, °46 v,.�s - '� x +1 41 � * V/2 PROPOSED SHALLOW SOIL REMOVAL AREA " .v vv �, r ' #4"44.4.??.„ ,,:" 2 slaw,E a ', 4i!7,1 x l''r` ',',"+ as ,lw. rw n w _'r'"5`� NO TRACT B(Taxbt 25101 CA-700) ��. '`°vwaw t"�r.v ' .. .", ..._ Oeer�._ s 1 :. mac -'+� ,1L�- - '{[• +y ac tea •*1£ •r co a Section 4 "< i� 6T a w W v k 'i � Section 3 Sd ` z . ` =:emu�is;� r �:. ■ 4 _ y-M G • ,4 • s II" dP a f Section 2A k-1N y :i 5 ` tomr@r 11.‘9='-'''- i , d P 4` +v e•3A 4,,it, S ti . . r 6 G. •F a - - r 4i , . . 0 El "v.. 4 � tA F,k,-f. r , t 47 C riJ j „R 4. ♦♦ a 1^4 °^u' •r ' " ,� t `t�i '1 "ii 3C3t i ,Y. W,61 -emu • 6s T- Section 1 BB ;� _.., .,, .• , ,,.,,-.•,‘„:„.„ • .,...,... . . . . . ... ,. , 0 .. . . ........ • - . . fll X Feet t O fn C PURPOSE:Remedial action performed under Oregon DEO oversight APPLICANT REFERENCE:To be determined PROPOSED:Removal of appro:imalely 45 fo 75 cubr yards of contaminated sediment below (p the ordinary high watermark.per 050 approved Remedial Action Work Plan;Removal of _y LOCATION: approximately 71 cubic yards of contaminated soli from upland area above wtllnary high watermark. DATUM:RADIO 7930 SW Hunzlker St,Tigard,Washington County,Oregon IN:Redradr Creek NEAR/AT:Tigard ADJACENT PROPERTY OWNERS:To be determined. COUNTY:coast ington STATE:OR APPLICATION BY:Gould Family!amperage IV,LLC PROJECT AREA: SHEET:s d 5 D C 45"25'IS 830•N r 122' 5'a a1190 w DATE:September 2011 KVIlG6aI 1 Mxhllasiewclrre.•.olu.nb.,a o.,a .1.WW .6-pr.,-.us...su w. Iwrawb-.Ypwr.Ga'a0.•a'Itlmil•12'a mrm Nationwide (NWP) 3. Cultural Resources and Human Burials- U I I I Inadvertent Discovery Plan: Permittees shall • Regional Permit immediately cease all ground disturbing US Army Corps Conditions activities and notify the Portland District of Engineers Portland District Regulatory Branch if at any time during the Portland District course of the work authorized,human burials, cultural items,or historic properties, as identified by the National Historic Preservation The following Nationwide Permit (NWP) regional Act and Native American Graves and conditions are for the Portland District Regulatory Repatriation Act, are discovered and/or may be Branch boundary. Regional conditions are placed on affected. The Permittee shall follow the NWPs to ensure projects result in less than minimal procedures outlined below: adverse impacts to the aquatic environment and to • Immediately cease all ground disturbing address local resource concerns. activities. ALL NWPs— • Notify the Portland District Regulatory 1. High Value Aquatic Resources: Except for Branch. Notification shall be made by fax NWPs 3. 20,27,32,38,47 and 48,any (503-808-4375)as soon as possible activity that would result in a loss of waters following discovery but in no case later of the United States(U.S.)in a high value than 24 hours. The fax shall clearly specify aquatic resource is not authorized by NWP. the purpose is to report a cultural resource High value aquatic resources in Oregon discovery. include bogs, fens,wetlands in dunal systems • Follow up the fax notification by contacting along the Oregon coast,eel grass beds,vernal the Corps representative(by email and pools,aspen-dominated wetlands,alkali telephone)identified in the permit letter. wetlands, and Willamette Valley wet prairie • Project Located in Oregon: Notify the wetlands. Oregon State Historic Preservation Office (503-986-0674). 0 Willamette Valley wet prairie wetlands are • Project Located in Washington: Notify the characterized by high species diversity with a Washington Department of Archaeology dominance of cespitose graminoids such as and Historic Preservation(360 586-3077). tufted hairgrass(Deschampsia caespitosa). Plant species associated with Willamette Valley Failure to stop work immediately and until wet prairie wetlands may also include ESA- listed plants such as Bradshaw's lomatium such time as the Corps has coordinated (Lomatium bradshawii),Willamette daisy with all appropriate agencies and complied (Erigeron decumbens var.decumbens), with the provisions of 33 CFR 325, Nelson's checkermallow(Sidalcea nelsoniana) Appendix C,the National Historic and rough popcorn flower(Plagiobothrys Preservation Act,Native American Graves hirtus). Soil series associated with Willamette and Repatriation Act and other pertinent Valley wet prairie wetlands may include,but are regulations,could result in violation of not limited to,the Dayton,Amity,Bashaw, state and federal laws. Violators are Natroy,and Waldo series. subject to civil and criminal penalties. 2. In-water Work Window: All in-water work shall be conducted during the listed in-water work window,as applicable(Refer to Oregon Department of Fish and Wildlife(ODFW) "Oregon Guidelines for Timing of In-Water Work to Protect Fish and Wildlife Resources" http://www.dfw.state.or.us/lands/inwater/inw ater guide.pdf). 1 NWP-2011-433 Enclosure 2 8. Fish Screening: The permittee shall ensure 4. Erosion Control: During construction, that all intake pipes utilize fish screening that permittee shall ensure that all practicable complies with standards developed by NMFS erosion and sediment control measures are (Juvenile Fish Screen Criteria(revised February installed and maintained in good working order 16, 1995)and Addendum: Juvenile Fish Screen to prevent unauthorized discharge of materials Criteria for Pump Intakes(May 9, 1996)). carried by precipitation, snow melt,wind or any other conveyance mechanism into any 9. Upland Disposal: Material disposed of in waterways and wetlands. The permittee is uplands shall be placed in a location and referred to Oregon Department of manner that prevents discharge of the material Environmental Quality's(DEQ)Oregon and/or return water into waterways or wetlands Sediment and Erosion Control Manual,April unless otherwise authorized by the Corps of 2005, for proper implementation of practicable Engineers(such as by NWP 16). sediment and erosion control measures. 10. Inspection of the Project Site: The permittee 5. Heavy Equipment: Permittee shall ensure that shall allow representatives of the Corps to all heavy equipment is operated from the bank inspect the authorized activity to confirm and not placed in the stream unless specifically compliance with nationwide permit terms and authorized by the District Engineer. Heavy conditions. A request for access to the site will equipment working in waters of the U.S. shall normally be made sufficiently in advance to be placed on removable mats or pads. allow a property owner or representative to be Following the removal of the mats or pads,the on site with the agency representative making area shall be restored to pre-project conditions. the inspection. 6. Deleterious Waste: All discharge water 11. Sale of Property/Transfer of Permit: The created during construction(e.g.concrete permittee shall obtain the signature(s)of the washout,pumping for work area isolation, new owner(s)and transfer this permit in the vehicle wash water,drilling fluids,etc.)shall be event the permittee sells the property associated treated to remove debris, sediment,petroleum with this permit. To validate the transfer of this products,metals, and other pollutants likely to permit authorization,a copy of this permit with be present. the new owner(s)signature shall be sent to the Portland District office at the following 7. Fish Passage: The permittee shall ensure address: U.S.Army Corps of Engineers, activities authorized by nationwide permit will CENWP-OD-G, P.O.Box 2946,Portland, not restrict passage of aquatic life. Activities Oregon, 97208-2946. such as the installation of culverts, intake structures,diversion structures,or other NWP 3—Maintenance modifications to channel morphology,must be 1. Permittee shall ensure project design designed to be consistent with fish passage includes appropriate grade control standards developed by the Oregon Department necessary to prevent headcutting of of Fish and Wildlife(ODFW)and the National streambanks and erosion. Marine Fisheries Service(NMFS). The standards can be found at OAR 635-412-0035. NWP 5—Scientific Measurement Devices The streambed shall be returned to pre- 1. The permittee shall remove all scientific construction contours after construction unless measurement devices within 30 days after the purpose of the activity is to eliminate a fish research is completed. barrier. NWP 6—Survey Activities 1. Use of in-water explosives is not authorized under this NWP. 2. The permittee shall ensure that all in-stream exploratory trenching is conducted in the dry. 2 NWP-2011-433 Enclosure 2 3. Sand and gravel bag dams shall be lined NWP 12—Utility Line Activities with a plastic liner or geotextile fabric to 1. The permittee shall ensure that utility lines reduce permeability and prevent sediments buried within or adjacent to wetland areas and/or construction materials from entering utilize trench-blockers of a type and design the waterway. sufficient to prevent the drainage of the 4. Downstream flows shall be maintained by wetland areas(e.g. bentonite clay plugs, routing flows around the construction site compacted sand bags, etc.). with a pump, bypass pipe, or diversion 2. The upper 12 inches of topsoil must be channel. removed and stockpiled separately from 5. A sediment basin shall be used to settle subsurface soils and shall be used as the sediments in return water prior to release final layer in backfilling the trench. back into the waterway. Settled water shall be returned to the waterway in such a NWP 13 —Bank Stabilization manner as to avoid erosion of the 1. The project design shall include the use of streambank. bioengineering techniques and natural products(e.g. vegetation and organic NWP 39—Commercial and Institutional material such as root wads)to the Developments maximum extent practicable and minimize 1. Fill into tributaries regulated as waters of the use of rock. Non-biodegradable the U.S. shall be limited to creation of materials, such as plastic netting,that may access roads. entrap wildlife or pose a safety concern 2. This NWP does not authorize discharges may not be used for soil stabilization. into open water. Riparian plantings shall be included in all project designs unless the permittee can NWP 40—Agricultural Activities demonstrate that such plantings are not 1. Acreage impacts authorized by this NWP practicable. Rip-rap shall be clean,durable, are cumulative for contiguous farm tracts angular rock. under the same ownership. When impacts 2. Work shall be performed in the dry or to contiguous farm tracts under the same during low flows. ownership reach 1/2 acre, no further discharges to waters of the United States may be authorized under NWP 40. NWP 29—Residential Developments 1. Wetland impacts associated with the NWP 41 —Reshaping Existing Drainage Ditches construction or expansion of a single 1. Work shall be performed in the dry or residence including attendant features during low flows. (utility lines,roads,yards, etc) shall not exceed '/,acre. NWP 42-Recreational Facilities 2. Fill into tributaries regulated as waters of 1. Fill into tributaries regulated as waters of the U.S. shall be limited to the creation of the U.S. shall be limited to creation of access roads. access roads. 2. This NWP does not authorize discharges NWP 33 —Temporary Construction,Access,and into open water. Dewatering 1. Work shall be performed in the dry or NWP 43- Stormwater Management Facilities during low flows. 1. Work shall be performed in the dry or 2. Cofferdams shall be constructed of non- during low flows. erosive material, such as concrete jersey 2. This NWP does not authorize the retention barriers, sand and gravel bag dams, or of water, in excess of that required to meet water bladders. Constructing a cofferdam stormwater management requirements,for by pushing material from the streambed or purposes such as recreational lakes, sloughing material from the streambanks is reflecting pools,irrigation,etc. not authorized under NWP 33. 3 NWP-2011-433 Enclosure 2 3. Spawning Areas. Activities in spawning areas during spawning seasons must be avoided to the maximum Nationwide NWP extent practicable. Activities that result in the physical destruction(e.g.,through excavation,fill,or downstream Permit Conditions smothering by substantial turbidity)of an important spawning area are not authorized. US Army Corps 33 CFR Part 330; of Engineers Issuance of Nationwide 4. Migratory Bird Breeding Areas: Activities in waters Portland District Permits—March 12,2007 of the United States that serve as breeding areas for migratory birds must be avoided to the maximum extent practicable. C. General Conditions 5. Shellfish Beds. No activity may occur in areas of concentrated shellfish populations,unless the activity is Note: To qualify for NWP authorization,the prospective permittee directly related to a shellfish harvesting activity must comply with the following general conditions,as appropriate,in addition to any regional or case-specific conditions imposed by the authorized by N W P's 4 and 48. division engineer or district engineer. Prospective pemiittecs should contact the appropriate Corps district office to determine if regional 6. Suitable MateriaL No activity may use unsuitable conditions have been imposed on an NWP. Prospective pennittees material(e.g.,trash,debris,car bodies,asphalt,etc.). should also contact the appropriate Corps district office to determine the status of the Clean Water Act Section 401 water quality Material used for construction or discharged must be free certification and/or Coastal Zone Management Act consistency for any from toxic pollutants in toxic amounts(see Section 307 NWP, of the Clean Water Act). 1.Navigation. 7. Water Supply Intakes. No activity may occur in the proximity of a public water supply intake,except where (a)No activity may cause more than a minimal adverse the activity is for the repair or improvement of public effect on navigation. water supply intake structures or adjacent bank stabilization. (b) Any safety lights and signals prescribed by the U.S. Coast Guard,through regulations or otherwise,must be 8. Adverse Effects From Impoundments. If the activity installed and maintained at the permittees' expense on creates an impoundment of water,adverse effects to the authorized facilities in navigable waters of the United aquatic system due to accelerating the passage of water, States. and/or restricting it flows must be minimized to the maximum extent practicable. (c) The permittee understands and agrees that,if future operations by the United States require the removal, 9. Management of Water Flows. To the maximum relocation,or other alteration,of the structure of work extent practicable,the pre-construction course,condition, herein authorized,or if,in the opinion of the Secretary of capacity,and location of open waters must be maintained the Army or his authorized representative,said structure for each activity,including stream channelization and or work shall cause unreasonable obstruction to the free stormwater management activities,except as provided navigation of the navigable waters,the permittee will be below. The activity must be constructed to withstand required,upon due notice from the Corps of Engineers, expected high flows. The activity must not restrict or to remove,relocate,or alter the structural work or impede the passage of normal or high flows,unless the obstructions caused thereby,without expense to the primary purpose of the activity is to impound water or United States. No claim shall be made against the manage high flows. The activity may alter the pre- United States on account of any such removal or construction course,condition,capacity,and location of alteration. open waters,if it benefits the aquatic environment(e.g., stream restoration or relocation activities.) 2. Aquatic Life Movements. No activity may substantially disrupt the necessary life cycle of 10. Fills Within 100-Year Floodplalns. The activity movements of those species of aquatic life indigenous to must comply with applicable FEMA-approved state or the waterbody,including those species that normally local floodplain management requirements. migrate through the area,unless the activity's primary purpose is to impound water. Culverts placed in streams 11. Equipment. Heavy equipment working in wetlands must be installed to maintain low flow conditions. or mudflats must be placed on mats,or other measures must be taken to minimize soil disturbance. NWP-2011-433 Page 1 of 10 Enclosure 3 12. Soil Erosion and Sediment Controls. Appropriate (c) Non-federal permittees shall notify the district soil erosion and sediment controls must be used and engineer if any listed species or designated critical maintained in effective operating condition during habitat might be affected or is in the vicinity of the construction,and all exposed soil and other fills,as well project,or if the project is located in designated critical as any work below the ordinary high water mark or high habitat,and shall not begin work on the activity until tide line,must be permanently stabilized at the earliest notified by the district engineer that the requirements of practicable date. Permittees are encouraged to perform the ESA have been satisfied and that the activity is work within waters of the United States during periods of authorized. For activities that might affect Federally- low-flow or no-flow. listed endangered or threatened species or designated critical habitat,the pre-construction notification must 13. Removal of Temporary Fills. Temporary fills must include the name(s)of the endangered or threatened be removed in their entirety and the affected areas species that may be affected by the proposed work or returned to pre-construction elevations. The affected that utilize the designated critical habitat that may be areas must be revegetated,as appropriate. affected by the proposed work. The district engineer will determine whether the proposed activity"may affect"or 14. Proper Maintenance. Any authorized structure or will have"no effect"to listed species and designated fill shall be properly maintained,including maintenance critical habitat and will notify the non-Federal applicant to ensure public safety. of the Corps'determination within 45 days of receipt of a complete pre-construction notification. In cases where 15. Wild and Scenic Rivers. No activity may occur in a the non-Federal applicant has identified listed species or component of the National Wild and Scenic River critical habitat that might be affected or is in the vicinity System,or in a river officially designated by Congress as of the project,and has so notified the Corps,the a"study river"for possible inclusion in the system while applicant shall not begin work until the Corps has the river is an official study status,unless the appropriate provided notification the proposed activities will have Federal agency with direct management responsibility "no effect"on listed species or critical habitat,or until for such river,has determined in writing that the Section 7 consultation has been completed. proposed activity will not adversely affect the Wild and Scenic River designation or study status. Information on (d) As a result of formal or informal consultation with Wild and Scenic Rivers may be obtained from the the FWS or NMFS the district engineer may add species- appropriate Federal land management agency in the area specific regional endangered species conditions to the (e.g.National Park Service,U.S.Forest Service,Bureau NWPs. of Land Management,U.S.Fish and Wildlife Service.) (e) Authorization of an activity by a NWP does not 16. Tribal Rights. No activity or its operation may authorize the"take"of a threatened or endangered impair reserved tribal rights,including,but not limited species as defined under the ESA. In the absence of to,reserved water rights and treaty fishing and hunting separate authorization(e.g.,an ESA Section 10 Permit,a rights. Biological Opinion with"incidental take"provisions, etc.)from the FWS or the NMFS,both lethal and non- 17. Endangered Species. lethal"takes"of protected species are in violation of the ESA. Information on the location of threatened and (a) No activity is authorized under any NWP which is endangered species and their critical habitat can be likely to jeopardize the continued existence of a obtained directly from the offices of the FWS and NMFS threatened or endangered species or a species proposed or their World Wide Web pages at http://www/fws.gov/ for such designation,as identified under the Federal and http://www.noaa.gov/fisheries.html respectively. Endangered Species Act(ESA),or which will destroy or adversely modify the critical habitat of such species. No 18. Historic Properties. activity is authorized under any NWP which"may affect"a listed species or critical habitat,unless Section (a) In cases where the district engineer determines that 7 consultation addressing the effects of the proposed the activity may affect properties listed,or eligible for activity has been completed. listing,in the National Register of Historic Places,the activity is not authorized,until the requirements of (b) Federal agencies should follow their own procedures Section 106 of the National Historic Preservation Act for complying with the requirements of the ESA. (NHPA)have been satisfied. Federal permittees must provide the district engineer with the appropriate documentation to demonstrate compliance with those requirements. NWP-2011-433 Page 2 of 10 Enclosure 3 (b) Federal permittees should follow their own would relate,or having legal power to prevent it,allowed procedures for complying with the requirements of such significant adverse effect to occur,unless the Corps, Section 106 of the National Historic Preservation Act. after consultation with the Advisory Council on Historic Federal permittees must provide the district engineer Preservation(ACHP),determines that circumstances with the appropriate documentation to demonstrate justify granting such assistance despite the adverse effect compliance with those requirements. created or permitted by the applicant. If circumstances justify granting the assistance,the Corps is required to (c) Non-federal permittees must submit a pre- notify ACHP and provide documentation specifying the construction notification to the district engineer if the circumstances,explaining the degree of damage to the authorized activity may have the potential to cause integrity of any historic properties affected,and proposed effects to any historic properties listed,determined to be mitigation. This documentation must include any views eligible for listing on,or potentially eligible for listing on obtained from the applicant,SHPO/THPO,appropriate the National Register of Historic Places, including Indian tribes if the undertaking occurs on or affects previously unidentified properties. For such activities, historic properties on tribal lands or affects properties of the pre-construction notification must state which interest to those tribes,and other parties known to have a historic properties may be affected by the proposed work legitimate interest in the impacts to the permitted activity or include a vicinity map indicating the location of the on historic properties. historic properties or the potential for the presence of historic properties. Assistance regarding information on 19. Designated Critical Resource Waters. Critical the location of or potential for the presence of historic resource waters include,NOAA-designated marine resources can be sought from the State Historic sanctuaries,National Estuarine Research Reserves,state Preservation Office or Tribal Historic Preservation natural heritage sites,and outstanding national resource Officer,as appropriate,and the National Register of waters or other waters officially designated by a state as Historic Places(see 33 CFR.4(g)). The district engineer having particular environmental or ecological shall make a reasonable and good faith effort to carry out significance and identified by the district engineer after appropriate identification efforts,which may include notice and opportunity for public comment. The district background research,consultation,oral history engineer may also designate additional critical resource interviews,sample field investigation,and field survey. waters after notice and opportunity for comment. Based on the information submitted and these efforts,the district engineer shall determine whether the proposed (a) Discharges of dredged or fill material into waters of activity has the potential to cause an effect on the historic the United States are not authorized by NWPs 7, 12, 14, properties. Where the non-Federal applicant has 16, 17,21,29,31,35,39,40,42,43,44,49,and 50 for identified historic properties which the activity may have any activity within,or directly affecting critical resource the potential to cause effects and so notified the Corps, waters,including wetlands adjacent to such waters. the non-Federal applicant shall not begin the activity until notified by the district engineer either that the (b) For NWPs 3,8, 10, 13, 15, 18, 19,22,23,25,27,28, activity has no potential to cause effects or that 30,33,34,36,37,and 38,notification is required in consultation under Section 106 of the NPHA has been accordance with General Condition 27,for any activity completed. proposed in the designated critical resource waters including wetlands adjacent to those waters. The district (d) The district engineer will notify the prospective engineer may authorize activities under these NWPs only permittee within 45 days of receipt of a complete pre- after it is determined that the impacts to the critical construction notification whether NHPA Section 106 resource waters will be no more than minimal. consultation is required. Section 106 consultation is not required when the Corps determines that the activity 20. Mitigation. The district engineer will consider the does not have the potential to cause effects on historic following factors when determining appropriate and properties(see 36 CFR 800.3 (a)). If NHPA Section 106 practicable mitigation necessary to ensure that adverse consultation is required and will occur,the district effects on the aquatic environment are minimal: engineer will notify the non-Federal applicant that he or she cannot begin work until Section 106 consultation is (a) The activity must be designed and constructed to completed. avoid and minimize adverse effects,both temporary and permanent,to waters of the United States to the (e) Prospective permittees should be aware that Section maximum extent practicable at the project site(i.e.,on 110k of the NHPA(16 U.S.C.470h-2(k))prevents the site). Corps from granting a permit or other assistance to an applicant who,with intent to avoid the requirements of Section 106 of the NHPA,has intentionally significantly adversely affected a historic property to which the permit NWP-2011-433 Page 3 of 10 Enclosure 3 (b) Mitigation in all its forms(avoiding,minimizing, appropriate form of compensatory mitigation,the district rectifying,reducing, or compensating)will be required to engineer may waive or reduce the requirement to provide the extent necessary to ensure that the adverse effects to wetland compensatory mitigation for wetland losses. the aquatic environment are minimal. (g) Permittees may propose the use of mitigation banks, (c) Compensatory mitigation at a minimum one-for-one in-lieu fee arrangements or separate activity-specific ratio will be required for all wetland losses that exceed compensatory mitigation. In all cases,the mitigation 1/10-acre and require pre-construction notification, provisions will specify the party responsible for unless the district engineer determines in writing that accomplishing and/or complying with the mitigation some other form of mitigation would be environmentally plan. appropriate and provides a project-specific waiver of this requirement. For wetland losses of 1/10-acre or less that (h) Where certain functions and services of waters of the require pre-construction notification,the district engineer United States are permanently adversely affected,such may determine on a case-by-case basis that as the conversion of a forested or scrub-shrub wetland to compensatory mitigation is required to ensure that the a herbaceous wetland in a permanently maintained utility activity results in minimal adverse effects on the aquatic line right-of-way,mitigation may be required to reduce environment. Since the likelihood of success is greater the adverse effects of the project to the minimal level. and the impacts to potentially valuable uplands are reduced,wetland restoration should be the first 21. Water Quality. Where States and authorized Tribes, compensatory mitigation option considered. or EPA where applicable,have not previously certified compliance of an NWP with CWA Section 401, (d) For losses of streams or other open waters that individual 401 Water Quality Certification must be require pre-construction notification,the district engineer obtained or waived(see CFR 330.4(c)). The district may require compensatory mitigation,such as stream engineer or State or Tribe may require additional water restoration,to ensure that the activity results in minimal quality management measures to ensure that the adverse effects on the aquatic environment. authorized activity does not result in more than minimal degradation of water quality. (e) Compensatory mitigation will not be used to increase the acreage losses allowed by the acreage limits of the 22. Coastal Zone Management. In coastal states where NWPs. For example,if an NWP has an acreage limit of an NWP has not previously received a state coastal zone 1/2-acre,it cannot be used to authorize any project management consistency concurrence,an individual state resulting in the loss of greater than 1/2-acre of waters of coastal zone management consistency concurrence must the United States,even if compensatory mitigation is be obtained,or a presumption of concurrence must occur provided that replaces or restores some of the lost waters. (see 33 CFR 330.4(d)). The district engineer or a State However,compensatory mitigation can and should be may require additional measures to ensure that the used,as necessary,to ensure that a project already authorized activity is consistent with state coastal zone meeting the established acreage limits also satisfies the management requirements. minimal impact requirement associated with the NWPs. 23. Regional and Case-By-Case Conditions. The (f) Compensatory mitigation plans for projects in or near activity must comply with any regional conditions that streams or other open waters will normally include a may have been added by the Division Engineer(see CFR requirement for the establishment,maintenance,and 330.4(e))and with any case-specific conditions added by legal protection(e.g.,conservation easements)of riparian the Corps or by the state,Indian Tribe,or EPA in its areas next to open waters. In some cases,riparian areas Section 401 Water Quality Certification,or by the state may be the only compensatory mitigation required. in its Coastal Zone Management Act consistency Riparian areas should consist of native species. The determination. width of the required riparian area will address documented water quality or aquatic habitat loss 24. Use of Multiple Nationwide Permits. The use of concerns. Normally,the riparian area will be 25 to 50 more than one NWP for a single and complete project is feet wide on each side of the stream,but the district prohibited,except when the acreage loss of waters of the engineer may require slightly wider riparian areas to United States authorized by the NWPs does not exceed address documented water quality or habitat loss the acreage limit of the NWP with the highest specified concerns. Where both wetlands and open waters exist on acreage limit. For example,if a road crossing over tidal the project site,the district engineer will determine the waters is constructed under NWP 14,with associated appropriate compensatory mitigation(e.g.,riparian areas bank stabilization authorized by NWP 13,the maximum and/or wetlands compensation)based on what is best for acreage loss of waters of the United States for the total the aquatic environment on a watershed basis. In cases project cannot exceed 1/3-acre. where riparian areas are determined to be the most NWP-2011-433 Page 4 of 10 Enclosure 3 25. Transfer of Nationwide Permit Verifications. If the (1) Until notified in writing by the district permittee sells the property associated with a nationwide engineer that the activity may proceed under the NWP permit verification,the permittee may transfer the with any special conditions imposed by the district or nationwide permit verification to the new owner by division engineer;or submitting a letter to the appropriate Corps district office to validate the transfer. A copy of the nationwide permit (2) If 45 calendar days have passed from the verification must be attached to the letter,and the letter district's receipt of the complete PCN and the must contain the following statement and signature: prospective permittee has not received written notice from the district or division engineer. However,if the "When the structures or work authorized by this permittee was required to notify the Corps pursuant to nationwide permit are still in existence at the time the General Condition 17 that listed species or critical property is transferred, the terms and conditions of habitat might be affected or in the vicinity of the project, this nationwide permit, including any special or to notify the Corps pursuant to General Condition 18 conditions, will continue to be binding on the new that the activity may have the potential to cause effects to owner(s)of the property. To validate the transfer of historic properties,the permittee cannot begin the this nationwide permit and the associated liabilities activity until receiving written notification from the associated with compliance with its terms and Corps that is"no effect"on listed species or"no conditions,have the transferee sign and date below." potential to cause effects"on historic properties,or that any consultation required under Section 7 of the (Transferee) Endangered Species Act(see CFR 330.4(t))and/or Section 106 of the National Historic Preservation(see (Date) CFR 330.4(g))is completed. Also,work cannot begin under NWPs 21,49,or 50 until the permittee has 26. Compliance Certification.Each permittee who received written approval from the Corps. If the received an NWP verification from the Corps must proposed activity requires a written waiver to exceed submit a signed certification regarding the completed specified limits of an NWP,the permittee cannot begin work and any required mitigation. The certification form the activity until the district engineer issues the waiver. must be forwarded by the Corps with the NWP If the district or division engineer notifies the permittee verification letter and will include: in writing that an individual permit is required within 45 calendar days of receipt of a complete PCN,the (a) A statement that the authorized work was done in permittee cannot begin the activity until an individual accordance with the NWP authorization,including any permit has been obtained. Subsequently,the permittee's general or specific conditions; right to proceed under the NWP may be modified, suspended,or revoked only in accordance with the (b) A statement that any required mitigation was procedure set forth in 33 CFR 330.5(d)X2). completed in accordance with the permit conditions;and (b) Contents of Pre-Construction Notification: The (c) The signature of the permittee certifying the PCN must be in writing and include the following completion of the work and mitigation. information: 27. Pre-Construction Notification. (1) Name,address and telephone numbers of the prospective permittee; (a) Timing. Where required by the terms of the NWP, the prospective permittee must notify the district (2) Location of the proposed project; engineer by submitting a pre-construction notification (PCN)as early as possible. The district engineer must (3) A description of the proposed project;the determine if the PCN is complete within 30 calendar project's purpose;direct and indirect adverse days of the receipt and,as a general rule,will request environmental effects the project would cause;any other additional information necessary to make the PCN NWP(s),regional general permit(s),or individual complete only once. However, if the prospective permit(s)used or intended to be used to authorize any permittee does not provide all of the requested part of the proposed project or any related activity. The information,then the district engineer will notify the description should be sufficiently detailed to allow the prospective permittee that the PCN is still incomplete district engineer to determine that the adverse effects of and the PCN review process will not commence until all the project will be minimal and to determine the need for of the requested information has been received by the compensatory mitigation. Sketches should be provided district engineer. The prospective permittee shall not when necessary to show that the activity complies with begin the activity: the terms of the NWP. (Sketches usually clarify the project and when provided result in a quicker decision); NWP-2011-433 Page 5 of 10 Enclosure 3 (4) The PCN must include a delineation of (2) For all NWP 48 activities requiring pre- special aquatic sites and other waters of the United States construction notification and for other NWP activities on the project site. Wetland delineations must be requiring pre-construction notification and for other prepared in accordance with the current method required NWP activities requiring pre-construction notification to by the Corps. The permittee may ask the Corps to the district engineer that result in the loss of greater than delineate the special aquatic sites and other waters of the 1/2-acre of waters of the United States,the district United States,but there may be a delay if the Corps does engineer will immediately provide(e.g.,via facsimile the delineation,especially if the project site is large or transmission,overnight mail, or other expeditious contains many waters of the United States. Furthermore, manner)a copy of the PCN to the appropriate Federal or the 45-day period will not start until the delineation has state offices(FWS,state natural resource or water quality been submitted to or completed by the Corps,where agency,EPA,State Historic Preservation Officer appropriate; (SHPO)or Tribal Historic Preservation Office(THPO), and,if appropriate,the NMFS). With the exception of (5) If the proposed activity will result in the NWP 37,these agencies will then have 10 calendar days loss of greater than 1/10-acre of wetlands and a PCN is from the date the material is transmitted to telephone or required,the prospective permittee must submit a fax the district engineer that they intend to provide statement describing how the mitigation requirement will substantive,site-specific comments. If so contacted by be satisfied. As an alternative,the prospective permittee an agency,the district engineer will wait an additional 15 may submit a conceptual or detailed mitigation plan. calendar days before making a decision on the pre- construction notification. The district engineer will fully (6) If any listed species or designated critical consider agency comments received within the specified habitat might be affected or is in the vicinity of the time frame,but will provide no response to the resource project,or if the project is located in designated critical agency,except as provided below. The district engineer habitat,for non-Federal applicants the PCN must include will indicate in the administrative record associated with the name(s)of those endangered or threatened species each pre-construction notification that the resource that might be affected by the proposed work or utilize the agencies'concerns were considered. For NWP 37,the designated critical habitat that may be affected by the emergency watershed protection and rehabilitation proposed work. Federal applicants must provide activity may proceed immediately in cases where there is documentation demonstrating compliance with the an unacceptable hazard to life or significant loss of Endangered Species Act;and property or economic hardship will occur. The district engineer will consider any comments received to decide (7)For an activity that may affect a historic whether the NWP 37 authorization should be modified, property listed on,determined to be eligible for listing suspended,or revoked in accordance with the procedures on,or potentially eligible for listing on,the National at 33 CFR 330.5. Register of Historic Places,for non-Federal applicants the PCN must state which historic property may be (3) In cases of where the prospective permittee affected by the proposed work or include a vicinity map is not a Federal agency,the district engineer will provide indicating the location of the historic property. Federal a response to NMFS within 30 calendar days of receipt applicants must provide documentation demonstrating of any Essential Fish Habitat conservation compliance with Section 106 of the National Historic recommendations,as required by Section 305(b)(4)(B)of Preservation Act. the Magnuson-Stevens Fishery Conservation and Management Act. (c) Form of Pre-Construction Notification: The standard individual permit application form(Form ENG (4) Applicants are encouraged to provide the 4345)may be used,but the completed application form Corps multiple copies of pre-construction notifications to must clearly indicate that it is a PCN and must include all expedite agency coordination. of the information required in paragraphs(b)(1)through (7)of this general condition. A letter containing the (5) For NWP 48 activities that require required information may also be used. reporting,the district engineer will provide a copy of each report within 10 calendar days of receipt to the (d) Agency Coordination: appropriate regional office of the NMFS. (1) The district engineer will consider any (e) District Engineer's Decision; In reviewing the PCN comments from Federal and state agencies concerning for the proposed activity,the district engineer will the proposed activity's compliance with the terms and determine whether the activity authorized by the NWP conditions of the NWPs and the need for mitigation to will result in more than minimal individual or cumulative reduce the project's adverse environmental effects to a adverse environmental effects or may be contrary to the minimal level. public interest. If the proposed activity requires a PCN NWP-2011-433 Page 6 of 10 Enclosure 3 and will result in a loss of greater than 1/10-acre of (3)that the project is authorized under the NWP wetlands,the prospective permittee should submit a with specific modifications or conditions. Where the mitigation proposal with the PCN. Applicants may also district engineer determines that mitigation is required to propose compensatory mitigation for projects with ensure no more than minimal adverse effects occur to the smaller impacts. The district engineer will consider any aquatic environment,the activity will be authorized proposed compensatory mitigation the applicant has within the 45-day PCN period. The authorization will included in the proposal in determining whether the net include the necessary conceptual or specific mitigation or adverse environmental effects to the aquatic environment a requirement that the applicant submit a mitigation plan of the proposed work are minimal. The compensatory that would reduce the adverse effects on the aquatic mitigation proposal may be either conceptual or detailed. environment to the minimal level. When mitigation is If the district engineer determines that the activity required,no work in waters of the United States may complies with the terms and conditions of the NWP and occur until the district engineer has approved a specific that the adverse effects on the aquatic environmental are mitigation plan. minimal,after considering mitigation,the district engineer will notify the permittee and include arty 28. Single and Complete Project: The activity must be conditions the district engineer deems necessary. The a single and complete project. The same NWP cannot be district engineer must approve any compensatory used more than once for the single and complete project. mitigation proposal before the permittee commences work. If the prospective permittee elects to submit a compensatory mitigation plan with the PCN,the district E. Definitions engineer will expeditiously review the proposed compensatory mitigation plan. The district engineer Best management Practices(BMPs):Policies, must review the plan within 45 calendar days of practices,procedures,or structures implemented to receiving a complete PCN and determine whether the mitigate the adverse environmental effects on surface proposed mitigation would ensure no more than minimal water quality resulting from development. BMPs are adverse effects on the aquatic environment. If the net categories as structural and non-structural. adverse effects of the project on the aquatic environment (after consideration of the compensatory mitigation Compensatory mitigation: The restoration, proposal)are determined by the district engineer to be establishment(creation),enhancement,or preservation of minimal,the district engineer will provide a timely aquatic resources for the purpose of compensating for written response to the applicant. The response will state unavoidable adverse impacts which remain after all that the project can proceed under the terms and appropriate and practicable avoidance and minimization conditions of the NWP. has been achieved. If the district engineer determines that the adverse effects Currently serviceable: Useable as is or with of the proposed work are more than minimal,then the some maintenance,but not so degraded as to essentially district engineer will notify the applicant either: require reconstruction. (1) That the project does not qualify for Discharge: The term"discharge"means any authorization under NWP and instruct the applicant on discharge of dredged or fill material and any activity that the procedures to seek authorization under an individual causes or results in such a discharge. permit; (2) that the project is authorized under the Enhancement: The manipulation of the NWP subject to the applicant's submission of a physical,chemical,or biological characteristics of an mitigation plan that would reduce the adverse effects on aquatic resource to heighten,intensify,or improve a the aquatic environment to the minimal level;or specific aquatic resource function(s). Enhancement results in the gain of selected aquatic resource function(s),but may also lead to a decline in other aquatic resource function(s). Enhancement does not result in a gain in aquatic resource area. Ephemeral stream: An ephemeral stream has flowing water only during,and for a short duration after, precipitation events in a typical year. Ephemeral stream beds are located above the water table year-round. Groundwater is not a source of water for the stream. Runoff from rainfall is the primary source of water for stream flow. NWP-2011-433 Page 7 of 10 Enclosure 3 Establishment(creation): The manipulation of Non-tidal wetland: A non-tidal wetland is a the physical,chemical,or biological characteristics wetland that is not subject to the ebb and flow of tidal present to develop an aquatic resource that did not waters. The definition of a wetland can be found at 33 previously exist at an upland site. Establishment results CFR 328.3(b). Non-tidal wetlands contiguous to tidal in a gain in aquatic resource area. waters are located landward of the high tide line(i.e., spring high tide line). Historic Property: Any prehistoric or historic district,site(including archaeological site),building, Open water:For purposes of the NWPs,an structure,or other object included in,or eligible for open water is any area that in a year with normal patterns inclusion in,the National Register of Historic Places of precipitation has water flowing or standing above maintained by the Secretary of the Interior. This term ground to the extent that an ordinary high water mark includes artifacts,records,and remains that are related to can be determined. Aquatic vegetation within the area of and located within such properties. The term includes standing or flowing water is either non-emergent,sparse, properties of traditional religious and cultural importance or absent. Vegetated shallows are considered to be open to an Indian tribe or Native Hawaiian organization and waters. Examples of"open waters"include rivers, that meet the National Register criteria(36 CFR part 60). streams,lakes,and ponds. Independent utility: A test to determine what Ordinary High Water Mark: An ordinary high constitutes a single and complete project in the Corps water mark is a line on the shore established by the regulatory program. A project is considered to have fluctuations of water and indicated by physical independent utility if it would be constructed absent the characteristics,or by other appropriate means that construction of other projects in the project area. consider the characteristics of the surrounding areas(see Portions of a multi-phase project that depend upon other 33 CFR 328.3(e)). phases of the project do not have independent utility. Phases of a project that would be constructed even if the Perennial stream: A perennial stream has other phases were not built can be considered as separate flowing water year-round during a typical year. The single and complete projects with independent utility. water table is located above the stream bed for most of the year. Groundwater is the primary source of water for Intermittent stream: An intermittent stream has stream flow. Runoff from rainfall is a supplemental flowing water during certain times of the year,when source of water for stream flow. groundwater provides for stream flow. During dry periods,intermittent streams may not have flowing Practicable: Available and capable of being water. Runoff from rainfall is a supplemental source of done after taking into consideration cost,existing water for stream flow. technology,and logistics in light of the overall project purposes. Loss of waters of the United States: Waters of the United States that are permanently adversely affected Pre-construction notification: A request by filling,flooding,excavation,or drainage because of submitted by the project proponent to the Corps for the regulated activity. Permanent adverse effects include confirmation that a particular activity is authorized by permanent discharges of dredged or fill material that nationwide permit. The request may be a permit change an aquatic area to dry land,increase the bottom application,letter,or similar document that includes of elevation of a waterbody,or change the use of a information about the proposed work and its anticipated waterbody. The acreage of loss of waters of the United environmental effects. Pre-construction notification may States is a threshold measurement of the impact to be required by the terms and conditions of a nationwide jurisdictional waters for determining whether a project permit,or by regional conditions. A pre-construction may quality for an NWP;it is not a net threshold that is notification may be voluntarily submitted in cases where calculated after considering compensatory mitigation that pre-construction notification is not required and the may be used to offset losses of aquatic functions and project proponent wants confirmation that the activity is services. The loss of stream bed includes the linear feet authorized by nationwide permit. of stream bed that is filled or excavated. Waters of the United States temporarily filled,flooded,excavated,or Preservation: The removal of a threat to,or drained,but restored to pre-construction contours and preventing the decline of,aquatic resources by an action elevations after construction,are not included in the in or near those aquatic resources. This term includes measurement of loss of waters of the United States. activities commonly associated with the protection and Impacts resulting from activities eligible for exemptions maintenance of aquatic resources through the under Section 404(0 of the Clean Water Act are not implementation of appropriate legal and physical considered when calculating the loss of waters of the mechanisms. Preservation does not result in a gain of United States. aquatic resource area or functions. NWP-2011-433 Page 8 of 10 Enclosure 3 Re-establishment: The manipulation of the of a single water of the United States(i.e.,a single physical,chemical,or biological characteristics of a site waterbody)at a specific location. For linear projects with the goal of returning natural/historic functions to a crossing a single waterbody several times at separate and former aquatic resource. Re-establishment results in distant locations,each crossing is considered a single and rebuilding a former aquatic resource and results in a gain complete project. However,individual channels in a in aquatic resource area. braided stream or river,or individual arms of a large, irregularly shaped wetland or lake,etc.are not separate Rehabilitation: The manipulation of the waterbodies,and crossings of such features cannot be physical,chemical,or biological characteristics of a site considered separately. with the goal of repairing natural/historic functions to a degraded aquatic resource. Rehabilitation results in a Stormwater management: Stormwater gain in aquatic resource function,but does not result in a management is the mechanism for controlling gain in aquatic resource area. stormwater runoff for the purposes of reducing downstream erosion,water quality degradation,and Restoration: The manipulation of the physical, flooding and mitigating the adverse effects of changes in chemical,or biological characteristics of a site with the land use on the aquatic environment. goal of returning natural/historic functions to a former or degraded aquatic resource. For the purpose of tracking Stormwater management facilities: net gains in aquatic resource area,restoration is divided Stormwater management facilities are those facilities, into two categories: Re-establishment and rehabilitation. including but not limited to,stormwater retention and detention ponds and best management practices,which Riffle and pool complex: Riffle and pool retain water for a period of time to control runoff and/or complexes are special aquatic sites under the 404(b)(1) improve the quality(i.e.,by reducing the concentration Guidelines. Riffle and pool complexes sometimes of nutrients,sediments,hazardous substances and other characterize steep gradient sections of streams. Such pollutants)of stormwater runoff. stream sections are recognizable by their hydraulic characteristics. The rapid movement of water over a Stream bed: The substrate of the stream course substrate in riffles results in rough flow,a channel between the ordinary high water marks. The turbulent surface,and high dissolved oxygen levels in the substrate may be bedrock or inorganic particles that water. Pools are deeper areas associated with riffles. A range in size from clay to boulders. Wetlands slower stream velocity,a streaming flow,a smooth continuous to the stream bed,but outside of the ordinary surface,and a finer substrate characterize pools. high water marks,are not considered part of the stream bed. Riparian areas: Riparian areas are lands adjacent to streams,lakes,and estuarine-marine Stream channelization: The manipulation of a shorelines. Riparian areas are transitional between stream's course,condition,capacity,or location that terrestrial and aquatic ecosystems,through which surface causes more than minimal interruption of normal stream and subsurface hydrology connects waterbodies with processes. A channelized stream remains a water of the their adjacent uplands. Riparian areas provide a variety United States. of ecological functions and services and help improve or maintain local water quality. (See General Condition 20) Structure: An object that is arranged in a definite pattern of organization. Examples of structures Shellfish seeding: The placement of shellfish include,without limitation,any pier,boat dock,boat seed and/or suitable substrate to increase shellfish ramp,wharf,dolphin,weir,boom,breakwater,bulkhead, production. Shellfish seed consists of immature revetment,riprap,jetty,artificial island, artificial reef, individual shellfish or individual shellfish attached to permanent mooring structure,power transmission line, shells or shell fragments(i.e.,spat on shell). Suitable permanently moored floating vessel,piling,aid to substrate may consist of shellfish shells,shell fragments, navigation,or any other manmade obstacle or or other appropriate materials placed into waters for obstruction. shellfish habitat. Single and complete project: The term"single and complete project"is defined at 33 CFR 330.2(i)as the total project proposed or accomplished by one owner/developer or partnership or other association of owners/developers. A single and complete project must have independent utility(see definition). For linear projects,a"single and complete project"is all crossings NWP-2011-433 Page 9 of 10 Enclosure 3 Tidal wetland: A tidal wetland is a wetland (i.e.,water of the United States)that is inundated by tidal waters. The definitions of a wetland and tidal waters can be found at 33 CFR 328.3(b)and 33 CFR 328.3(f), respectively. Tidal waters rise and fall in a predicable and measurable rhythm or cycle due to the gravitational pulls of the moon and sun. Tidal waters end where the rise and fall of the water surface can no longer be practically measured in a predictable rhythm due to masking by other waters, wind,or other effects. Tidal wetlands are located channelward of the high tide line, which is defined at 33 CFR 328.3(d). Vegetated shallows: Vegetated shallows are special aquatic sites under the 404(b)(1)Guidelines. They are areas that are permanently inundated and under normal circumstances have rooted aquatic vegetation, such as seagrasses in marine and estuarine systems and a variety of vascular rooted plants in freshwater systems. Waterbody For purposes of the NWPs,a waterbody is a jurisdictional water of the United States that,during a year with normal patterns of precipitation, has water flowing or standing above ground to the extent that an ordinary high water mark(OHWM)or other indicators of jurisdiction,that waterbody and its adjacent wetlands are considered together as a single aquatic unit (see 33 CFR 328.4(c)(2)). Examples of"waterbodies" include streams,rivers,lakes,ponds,and wetlands. NWP-2011-433 Page 10 of 10 Enclosure 3 Oregon Department of , .2, , Environmental Quality (DEQ) US Army Corps 401 Water Quality (WQC) General of Engineers Conditions Portland District In addition to all USACE permit conditions,the following 401 WQC conditions apply to all Nationwide Permit categories certified or partially certified by this 401 WQC, unless specified in the condition. Additional 401 WQC Category Specific Conditions follow,which must also be complied with as applicable. 1) Turbidity: All practical Best Management Practices(BMPs)on disturbed banks and within the stream shall be implemented to minimize turbidity during in-water work. OAR 340-041-0036 states that turbidity shall not exceed 10 percent above natural stream turbidities, except where allowed by the rule. This rule also states that limited duration activities necessary to accommodate essential dredging,construction or other legitimate activities and which cause the turbidity standard to be exceeded may be authorized provided all practical turbidity control techniques have been applied and a section 401 water quality certificate has been granted. a. Monitoring:Turbidity monitoring shall be conducted and recorded as described below.Monitoring shall occur each day during daylight hours when in-water work is being conducted.A properly and regularly calibrated turbidimeter is recommended,however,visual gauging is acceptable. i.Representative Background Point: a sample or observation must be taken every four hours at a relatively undisturbed area approximately 100 feet upcurrent from in-water disturbance to establish background turbidity levels for each monitoring cycle. Background turbidity,location,and time must be recorded prior to monitoring downcurrent. ii.Compliance Point: Monitoring shall occur every four hours approximately 100 feet down current from the point of discharge and be compared against the background measurement or observation. The turbidity, location, and time must be recorded for each sample. b. Compliance: Results from the compliance points should be compared to the background levels taken during each monitoring interval. Exceedances are allowed as follows: MONITORING WITH A TURBIDIMETER ALLOWABLE EXCEEDANCE ACTION REQUIRED AT 1" ACTION REQUIRED AT 2R°-- TURBIDITY LEVEL MONITORING INTERVAL MONITORING INTERVAL 0 to 5 NTU above background Continue to monitor every 4 hours Continue to monitor every_4 hours 5 to 29 NTU above background .Modify BMPs&continue to monitor Stop work after 8 hours at 5-29 every 4 hours NTU above background 30 to 49 NTU above Modify BMPs&continue to monitor Stop work after 2 hours at 30-49 background every 2 hours NTU above background 50 NTU or more above Stop work Stop work background VISUAL MONITORING No plume observed Continue to monitor every 4 hours Continue to monitor every 4 hours Plume observed Modify BMPs&continue to monitor Stop work after 8 hours with an every 4 hours observed plume Corps No.NWP-2011-433 Page 1 of 8 ENCL 4 When monitoring visually, turbidity that is visible over iii. Limit the number and location of stream background is considered an exceedance of the crossing events. Establish temporary crossing standard. sites as necessary at the least impacting areas and supplement with clean gravel or other temporary If an exceedance over the background level occurs, methods as appropriate; the applicant must modem the activity and continue to monitor every four hours or as appropriate (above). If iv. Machinery will not drive into the flowing an exceedance over the background level continues channel; after the second monitoring interval, the activity must stop until the turbidity levels return to background. If v. Excavated material will be placed so that however, turbidity levels return to background at it is isolated from the water edge or wetlands second monitoring level due to implementation of and not placed where it could re-enter waters BMPs or natural attenuation, work make continue of the state uncontrolled; and, with appropriate monitoring as above. vi. Use of containment measures such as silt If an exceedance occurs at: 50 NTU or more over curtains,geotextile fabric, and silt fence will background; 30 NTU over background for 2 hours; or be implemented and properly maintained in 5-29 NTU over back ground for 8 hours, the activity order to minimize in-stream sediment must stop immediately for the remainder of that 24- suspension and resulting turbidity. hour period. 2) Erosion Control: The applicant is referred to c. Reporting: Copies of daily logs for turbidity DEQ's Oregon Sediment and Erosion Control monitoring shall be available to DEQ,USACE, Manual, April 2005.The following erosion control National Marine Fisheries Service(NMFS),US measures(and others as appropriate)or comparable Fish and Wildlife Service(USFWS),and Oregon measures as specified in an NPDES 1200-C permit(if Department of Fish& Wildlife(ODFW)upon required)shall be implemented during request.The log must include:background NTUs, construction/project activities: compliance point NTUs,comparison of the points in NTUs,and location,time,and tidal stage(if a. Filter bags, sediment traps or catch basins, applicable)for each reading.Additionally,a vegetative strips,berms,Jersey barriers,fiber narrative must be prepared discussing all blankets,bonded fiber matrices,geotextiles, exceedances with subsequent monitoring, actions mulches,wattles, sediment fences,or other taken, and the effectiveness of the actions. measures used in combination shall be used to prevent movement of soil from uplands into d. BMPs to Minimize In-stream Turbidity: waterways or wetlands; i. Sequence/Phasing of work—The b. An adequate supply of materials needed to applicant will schedule work activities so as to control erosion must be maintained at the project . minimize in-water disturbance and duration of in- construction site; water disturbances; c. To prevent stockpile erosion, use compost ii. Bucket control-All in-stream digging berms,impervious materials or other equally passes by excavation machinery and placement effective methods,during rain events or when the of fill in-stream using a bucket shall be stockpile site is not moved or reshaped for more completed so as to minimize turbidity. All than 48 hours; practicable techniques such as employing an experienced equipment operator,not dumping d. Erosion control measures shall be inspected partial or full buckets of material back into the and maintained daily or more frequently as wetted stream, adjusting the volume, speed, or necessary,to ensure their continued effectiveness both of the load,or by using a closed-lipped and shall remain in place until all exposed soil is environmental bucket shall be implemented; stabilized; Corps No. NWP-2011-433 Page 2 of 8 ENCL 4 i. If monitoring or inspection shows that the reasonable expectation that runoff from impervious erosion and sediment controls are ineffective, surfaces will carry pollutants toward the lowest point mobilize work crews immediately to make in the landscape,which is generally a water of the repairs, install replacements,or install additional state. Low Impact Development(LID)techniques to controls as necessary; reduce amounts and concentrations of runoff leaving the project area and Best Management Practices ii. Remove sediment from erosion and (BMPs)targeting removal of reasonably expected sediment controls once it has reached 1/3 of the pollutants(sediment,metals,hydrocarbons, nutrients, exposed height of the control. pesticides,etc.)prior to discharge of stormwater must be incorporated into project designs.A narrative and e. Unless part of the authorized permanent fill, site sketch describing these LID techniques,BMPs all construction access points through, and staging and other stormwater treatment options commensurate areas in,riparian or wetland areas shall use with the scale of the project will constitute a post- removable pads,mats,or other methods as construction stormwater management plan which must necessary to prevent soil compaction, unless doing be submitted by the applicant to DEQ for review and so would be more impactful to these or approval prior to construction. DEQ's Stormwater surrounding resources; Management Plan Submission Guidelines for Removal/Fill Permit Applications Which Involve f. Flag or fence off avoided wetlands and newly Impervious Surfaces(located under"Removal/Fill" at: planted areas to protect from disturbance and/or htt-://www.des.state.or.uslwa/sec40Ice rt/sec401c erosion; ert.htm)provides information to determine the level of detail required for the plan based on project type, g. Dredged or other excavated material shall be scope, location,and other factors, as well as placed on upland areas with stable slopes to references to assist in designing the plan. Submission prevent materials from eroding back into of the plan must include: waterways or wetlands; a. A site sketch or plan view drawing indicating: h. Sediment from disturbed areas or in any way the drainage flow directions; discharge locations; able to be tracked by vehicles onto pavement shall contours and spot elevations; location and size of not be allowed to leave the site in amounts that impervious features(e.g., parking lots, driveways, would reasonably be expected to enter waters of buildings,or roads);nearest downgradient the state and impair water quality. Placement of waterbody with direction of stream and surface clean aggregate at all construction entrances, and flow,other physical features of the site, and the other BMPs such as truck or wheel washes if location and type of post-construction BMPs; needed, will be used when earthmoving equipment will be leaving the site and traveling on paved b. A narrative description of proposed BMPs surfaces;and, and a summary of their anticipated operation to insure adequate capacity,proper function, and i. Projects which disturb one acre or appropriate design for the site such that quality, more require an NPDES 1200C Storm Water quantity,and seasonality of pre-construction Discharge Permit. Contact the appropriate DEQ hydrologic conditions are mimicked to the regional office for more information(Contact maximum extent practicable,based on stormwater information can be found at: anticipated to be generated due to project-related http://www.deq.state.or.us/wq/). impervious surfaces and delivered to waters of the state. See local jurisdiction regulations and 3) Post-Construction Stormwater Management accepted stormwater manuals for detention and for NWP activities involving impervious surfaces capacity requirements; (NWPs 3, 14, 15,29,36,39,42) Stormwater discharges to waters of the state must not violate state water quality standards, including Oregon Administrative Rule(OAR)340-041-0004,the Antidegradation Policy for Surface Water.There is a Corps No.NWP-2011-433 Page 3 of 8 ENCL 4 c. Implementation of the plan must be ii. Dispose of all treated wood debris concurrent with installation of impervious surfaces removed during a project, including treated and include an adequate operation and wood pilings, at an upland facility approved maintenance plan with documentation of for hazardous materials of this classification. responsibility for maintenance by a qualified Do not leave treated wood pile(s)in the water entity; or stacked on the streambank. d. If engineered structural BMPs are iii. Immediately place removed piling onto an incorporated into the post construction stormwater appropriate dry storage site. management plan they must be prepared and stamped by an Oregon registered Professional iv. Attempt to remove the entire temporary or Engineer(PE), and specification drawings must be permanent piling. submitted;or, v. If complete removal is not possible, e. In lieu of a complete plan,the applicant may ensure that any treated wood piling to remain submit: submerged is broken, cut, or pushed at least 3 feet below the sediment surface. i. Documentation of acceptance of the stormwater into a DEQ permitted National vi. Fill and cover holes left by each treated Pollutant Discharge Elimination Strategy timber piling removed with clean,native (NPDES)Phase I or II Municipal Separate substrates that match surrounding streambed Storm Sewer System(MS4); or materials. If chemically treated wood piles are removed using a vibratory hammer,ensure ii. Reference to implementation of a that holes are capped with clean fill as the pile programmatic process developed to achieve is removed. Surrounding the pile with clean these expectations,and acknowledged by material prior to removal will allow the hole DEQ as adequately addressing pollution to fill in upon extraction in order to contain control or reduction through basin-wide any un-decomposed chemicals which have postconstruction stormwater management pooled beneath the substrate and may tend to practices. escape upon extraction of the pile as they are less dense than the surrounding water. Clean 4) Deleterious Materials: The following conditions fill must be accounted for in project relating to control of hazardous,toxic and waste description and threshold limits. materials shall be observed: c. Biologically harmful materials and a. Treated Wood: Ineligibility-Projects which construction debris including,but not limited to: propose installation of chemically treated wood petroleum products,chemicals,cement cured less that will contact surface or ground water or that than 24 hours,welding slag and grindings, will be placed over water where it will be exposed concrete saw cutting by-products, sandblasted to abrasion require individual, site specific review materials, chipped paint,tires,wire,steel posts, and are,therefore, not certified by this 401 WQC. asphalt and waste concrete shall not be placed in waterways or wetlands.Authorized fill material b. Projects that require removal of chemically must be free of these materials.The applicant must treated wood must: remove all foreign materials,refuse, and waste from the project area. i. Ensure that no treated wood debris falls into waters of the State. If treated wood debris d. An adequate supply of materials needed to falls into waters of the State, it must be contain deleterious materials during a weather removed immediately and disposed of event must be maintained at the project site and properly. deployed as necessary. e. Machinery refueling shall not occur in waterways, wetlands,or riparian areas. Corps No.NWP-2011-433 Page 4 of 8 ENCL 4 5) Spill Prevention: Fuel,operate,maintain,and 6) Spill&Incident Reporting: store vehicles and construction materials in areas that minimize disturbance to habitat and prevent adverse a. In the event that petroleum products, effects from potential fuel spills. chemicals,or any other deleterious materials are discharged into state waters,or onto land with a a. Complete vehicle staging, cleaning, potential to enter state waters,the discharge shall maintenance,refueling, and fuel storage in a be promptly reported to the Oregon Emergency vehicle staging area placed 150 feet or more from Response Service(OERS, 1-800-452-031 1). any waters of the state.An exception to this Containment and cleanup must begin immediately distance can be made if all practicable prevention and be completed as soon as possible. and containment measures [as in 5)b through e below,or others] are employed and this distance is b. If the project operations cause a water quality not possible because of any of the following site problem which results in distressed or dying fish, conditions: the operator shall immediately: cease operations; take appropriate corrective measures to prevent i. Physical constraints that make this further environmental damage;collect fish distance not feasible(e.g., steep slopes,rock specimens and water samples;and notify DEQ, outcroppings); ODFW,NMFS and USFWS as appropriate. ii. Natural resource features would be 7) Vegetation Protection and Restoration: degraded as a result of this setback; Riparian,wetland,and shoreline vegetation in the or, authorized project area shall be protected from unnecessary disturbance to the maximum extent iii. Either no contaminants are present or full practicable through: containment of potential contaminants to prevent soil and water contamination is a. Minimization of project and impact footprint; provided; b. Designation of staging areas and access points b. Inspect all vehicles operated within 150 feet in open,upland areas; of any waters of the State daily for fluid leaks before leaving the vehicle staging area. Repair any c. Fencing or other barriers demarking leaks detected in the vehicle staging area before the construction areas;or, vehicle resumes operation; d. Use of alternative equipment(e.g., spider hoe c. Before operations begin and as often as or crane) necessary during operation, steam clean(or an approved equal)all equipment that will be used If authorized work results in unavoidable vegetative below bankfull elevation until all visible external disturbance;riparian,wetland, and shoreline oil, grease, mud,and other visible contaminates are vegetation shall be successfully reestablished to removed; function for water quality benefit at pre-project levels or improved,at the completion of the authorized d. Diaper all stationary power equipment(e.g., work. generators, cranes, stationary drilling equipment) operated within 150 feet of any waters of the state 8) Project Thresholds: to prevent leaks, unless other suitable containment is provided to prevent potential spills from entering a. Project applications must be complete and any waters of the state; and, account for total impacts at build-out regardless of construction phasing. Projects may not be phased e. An adequate supply of materials(such as to avoid exceeding USACE or DEQ imposed straw matting/bales,geotextiles,booms, diapers, threshold limitations of wetland impact or cubic and other absorbent materials)needed contain yards of material removal or fill; and, spills must be maintained at the project construction site and deployed as necessary. Corps No. NWP-2011-433 Page 5 of 8 ENCL 4 b. Impacts to wetlands and waters of the state for Emergency Response System(OERS)at a project are additive relative to the thresholds for 800.452.0311. Prior to cleanup,plans must be eligibility. submitted and approved by the regulatory agencies; 9) DEQ is to have site access upon reasonable request. c. When drilling is completed,attempts will be made to remove the remaining drilling fluid 10) This WQC is invalid if the project is operated in a from the sleeve(e.g.,by pumping)to reduce manner not consistent with the project description turbidity when the sleeve is removed; and contained in the permit application materials. d. An adequate supply of materials needed to 11) A copy of this WQC letter shall be kept on the job control erosion and/or to contain drilling fluids site and readily available for reference by the USACE, must be maintained at the project construction DEQ personnel,the contractor,and other appropriate site and deployed as necessary. state and local government inspectors. 3. Utility lines through wetlands must be fitted 12) DEQ reserves the option to modify, amend or with trench plugs to avoid dewatering wetlands. revoke this WQC,as necessary, in the event new information indicates that the project activities are NWP 13—Bank Stabilization: having a significant adverse impact on State water quality or critical fish resources. 1. Ineligibility: The following streambank stabilization activities require individual 401 WQC or additional conditions approved by DEQ. Activity Specific Conditions a. Bank stabilization projects in excess of 500 In addition to all conditions of the USACE permit feet. and the 401 WQC General Conditions above,the following conditions apply to specific categories of b. Permanent placement of material in wetlands authorized activities. adjacent to a stabilization project. NWP 12—Utility Lines: This WQC does not c.Placement of new vertical structures such as authorize the construction of substations or permanent retaining walls,bulkheads, gabions or similar access roads for utility lines in waters of the state structures;or placement of rock in constructed including wetlands. stream channel trenches where bioengineering is 1. All stream permanent or temporary crossings not a feature of the project,with the following must be made perpendicular to the bankline, or exceptions: nearly so, and at the narrowest, or least sensitive, portion of the wetland or riparian corridor. i. Rock as ballast to anchor or stabilize large woody debris components of an approved 2. Directionally bored stream crossings: bank treatment. a. Drilling Discharge—All discharge equipment, ii.Rock to fill scour holes,as necessary to drill recovery and recycling pits,and any waste protect the integrity of the stabilization or spoiled produced,will be completely isolated, project, if the rock is limited to the depth of recovered,then recycled or disposed of to the scour hole and does not extend above the prevent entry into waters of the state. Recycling channel bed. using a tank instead of drill recovery/recycling pits is preferable; iii. Rock to construct a footing, facing,head wall, or other protection necessary to prevent b. In the event that drilling fluids unavoidably scouring or downcutting of or slope erosion or enter a water of the state,the equipment operator failure at,an existing structure(e.g.,culvert, must stop work, immediately initiate containment utility line,roadway or bridge support)to be measures and report the spill to the Oregon repaired. Corps No. NWP-2011-433 Page 6 of 8 ENCL 4 iv. Rock or vertical structures in projects 3. Upland disposal facilities must receive a DEQ maintaining existing transportation related Solid Waste Letter of Authorization or written structures when a registered professional notice of exemption prior to disposal taking place engineer identifies these at the only there. Contact DEQ Land Quality in the regional effective method due to site specific office covering project area(800-452-4011). geotechnical or hydraulic concerns. NWP 33—Temporary Construction,Access,and For project meeting eligibility or an exception as Dewatering: Refer to Appendix D of DEQ's Oregon listed above(in 1.i through iv.),the applicant shall: Sediment and Erosion Control Manual,April 2005, for proper dewatering and work area isolation 2. Identify potential adverse impacts of bank techniques. Minimize general disturbance to existing stabilization on water quality parameters and vegetation and water quality by: beneficial uses both upstream and downstream of the activity site,and show how these have been 1. Using low impact equipment(e.g.,spider hoe, avoided, minimized or mitigated. crane); 3. Provide site design and construction features 2. Using existing roadways,travel paths,and that avoid,then minimize,then mitigate for the drilling pads; adverse impacts of bank stabilization. Appropriate design features include us of biodegradable project 3. Clearing vegetation which must be removed materials,riparian vegetation, and woody debris. only to ground level(no grubbing); 4. When rock is necessary, it must be 4. Placing clean gravel over geotextile fabric for appropriately sized for stability,clean, durable, access ways; angular, and include interstitial plantings unless the permittee can demonstrate that such plantings are 5. Minimizing the number of temporary stream not practicable. crossings and locating them in the least impactful areas; 5. Provide mitigation approved by DEQ for lost or reduced water quality function. 6. Construction temporary crossings of riparian areas and stream at right angles to the main NWP 16—Return Water from Contained Upland channel; Disposal Areas: Return water from material known to contain contaminants in dissolved form at levels 7. Obliterating all temporary access roads that will which exceed chronic water quality criteria(OAR not be incorporated into the permanent structure 340-041-0033,Tables 20, 33A, and 33B,see: and restoring those areas; http://www.deq.state.or.us/regulations/rules.htm)are not certified under this 401 WQC. 8. Stablizing any exposed soil; and 1. For all materials removed from wetlands and 9. Revegetating the site. waterways during authorized activities which has been determined to be suitable for in-water NWP-38—Cleanup of Hazardous and Toxic disposal, all practicable efforts to return to waters Waste: or beneficial reuse all excess material shall be undertaken prior to disposing in upland areas. 1. Dewatering of toxic material dredged from in- stream shall not occur over un-isolated waters of 2. Upland disposal of materials must conform to the state. Containment of toxics laden return water existing DEQ solid waste and contaminant must be provided such that proper disposal or requirements which include an appropriately adequate treatment prior to controlled release back located and designed confined disposal facility and to waters of the state may be accomplished. implementation of all practicable measures to prevent material discharge and uncontrolled return water discharge to waterways and wetlands. Corps No.NWP-2011-433 Page 7 of 8 ENCL 4 2. Upland disposal facilities must receive a DEQ Solid Waste Letter of Authorization or written notice of exemption prior to disposal taking place there. Contact DEQ Land Quality in the regional office covering project area(800-452-4011). NWP 41—Reshaping Existing Drainage Ditches: The linear threshold for reshaping drainage ditches under any NWP is 500 feet. All projects exceeding the 500 feet threshold require individual 401 WQC or additional conditions approved by DEQ. For projects within the 500 feet threshold,the applicant shall: 1. Work from only one bank in order to minimize disturbance to existing vegetation,preferably the bank with the least existing vegetation; 2. Preserve the existing vegetation to the maximum extent practicable; 3. Establish in-stream and riparian vegetation or reshaped channels and side channels wherever practicable. Such plantings shall be targeted to address water quality parameters(e.g.,provide shade to water to reduce temperature or provide bank stability through root systems to limit sediment inputs). Planting options include clustering or vegetating only one side of a channel, preferably the side which provides maximum shade. Corps No.NWP-2011-433 Page 8 of 8 ENCL 4 COMPLIANCE CERTIFICATION U.S. Army Corps of Engineers, Portland District CENWP-OD-GP P.O. Box 2946 Portland, Oregon 97208-2946 1. Permittee Name: Arthur Johnstone/RealNet Investments, LLC 2. County: Washington 2. Corps Permit No: NWP-2011-433 3. Corps Contact: Compliance and Enforcement(Wash. Co.) 4. Type of Activity: Nationwide Permit(NWP) 38 (Cleanup of Hazardous and Toxic Waste) Please sign and return form to the address above: I hereby certify that the work authorized the above referenced permit has been completed in accordance with the terms and conditions of said permit and that required mitigation is completed in accordance with the permit conditions, except as described below. Signature of Permittee Date NWP-2011-433 Enclosure 5. PRELIMINARY JURISDICTIONAL DETERMINATION FORM This preliminary JD finds that there "may be"waters of the United States on the subject project site,and identifies all aquatic features on the site that could be affected by the proposed activity,based on the following information: A. REPORT COMPLETION DATE: OCTOBER 4,2011 B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD: Arthur Johnstone RealNet Investments, LLC 9570 SW Barbur Blvd Portland, OR 97219 C. DISTRICT OFFICE,FILE NAME,AND NUMBER: Portland District,Red Rock Creek Sediment Removal Action,NWP-2011-433 D. PROJECT LOCATION(S),BACKGROUND INFORMATION,AND WATERS: State:Oregon City: Tigard County: Washington Name of nearest waterbody:Red Rock Creek Identify amount of waters in the review area: 0.01 acre. Name of any water bodies on the site that have been identified as Section 10 waters: Tidal: Non-Tidal: Waters of the U.S. Waterbody Latitude Longitude Cowardin Area Length Width (dd.ddd°N) _ (dd.ddd°W) _ Class -(Acres) (Feet) (Feet) Red Rock Creek 45.42726 -122.75671 Riverine 0.01 E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL THAT APPLY): ® Office(Desk)Determination. Date: October 4,2011 ❑ Field Determination. Date(s): NWP-2011-433 Page 1 of 3 Enclosure 6. F. SUPPORTING DATA: Data reviewed for preliminary JD (check all that apply-checked items should be included in case file and,where checked and requested, appropriately reference sources below): ® Maps,plans,plots or plat submitted by or on behalf of the applicant/consultant:ENG form submitted by the applicant.The applicant submitted maps and drawings with their application. ❑ Data sheets prepared/submitted by or on behalf of the applicant/consultant. [' Office concurs with data sheets/delineation report. ❑Office does not concur with data sheets/delineation report. ❑ Data sheets prepared by the Corps: ❑ Corps navigable waters' study: ❑ U.S. Geological Survey Hydrologic Atlas: ❑ USGS NHD data. ❑ USGS 8 and 12 digit HUC maps. ❑ U.S. Geological Survey map(s). Cite quad name: • ❑ USDA Natural Resources Conservation Service Soil Survey. Citation: ❑ National wetlands inventory map(s). Cite name: ❑ State/Local wetland inventory map(s): ❑ FEMA/FIRM maps: ❑ 100-year Floodplain Elevation is: (National Geodectic Vertical Datum of 1929) ❑ Photographs: ['Aerial(Name&Date):. or❑Other(Name & Date): ❑ Previous determination(s). File no. and date of response letter: ❑ Other information (please specify): IMPORTANT NOTE: The information recorded on this form has not necessarily been verified by the Corps and should not be relied upon for later jurisdictional determinations. Ulo2? ,Ao�! Signature and date of J Signature and date of Regulatory Project Manager person requesting preliminary JD (REQUIRED) (REQUIRED,unless obtaining the signature is impracticable) NWP-2011-433 Page 2 of 3 Enclosure 6. G. EXPLANATION OF PRELIMINARY AND APPROVED JURISDICTIONAL DETERMINATIONS: 1. The Corps of Engineers believes that there may be jurisdictional waters of the United States on the subject site, and the permit applicant or other affected party who requested this preliminary JD is hereby advised of his or her option to request and obtain an approved jurisdictional determination (JD) for that site. Nevertheless, the permit applicant or other person who requested this preliminary JD has declined to exercise the option to obtain an approved JD in this instance and at this time. 2. In any circumstance where a permit applicant obtains an individual permit, or a Nationwide General Permit(NWP) or other general permit verification requiring"pre-construction notification" (PCN), or requests verification for a non-reporting NWP or other general permit, and the permit applicant has not requested an approved JD for the activity,the permit applicant is hereby made aware of the following: (1)the permit applicant has elected to seek a permit authorization based on a preliminary JD, which does not make an official determination of jurisdictional waters; (2)that the applicant has the option to request an approved JD before accepting the terms and conditions of the permit authorization, and that basing a permit authorization on an approved JD could possibly result in less compensatory mitigation being required or different special conditions; (3)that the applicant has the right to request an individual permit rather than accepting the terms and conditions of the NWP or other general permit authorization; (4)that the applicant can accept a permit authorization and thereby agree to comply with all the terms and conditions of that permit, including whatever mitigation requirements the Corps has determined to be necessary; (5)that undertaking any activity in reliance upon the subject permit authorization without requesting an approved JD constitutes the applicant's acceptance of the use of the preliminary JD, but that either form of JD will be processed as soon as is practicable; (6) accepting a permit authorization(e.g., signing a proffered individual permit) or undertaking any activity in reliance on any form of Corps permit authorization based on a preliminary JD constitutes agreement that all wetlands and other water bodies on the site affected in any way by that activity are jurisdictional waters of the United States,and precludes any challenge to such jurisdiction in any administrative or judicial compliance or enforcement action, or in any administrative appeal or in any Federal court; and(7) whether the applicant elects to use either an approved JD or a preliminary JD, that JD will be processed as soon as is practicable. Further, an approved JD,a proffered individual permit(and all terms and conditions contained therein), or individual permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331, and that in any administrative appeal,jurisdictional issues can be raised(see 33 C.F.R. 331.5(a)(2)). If, during that administrative appeal, it becomes necessary to make an official determination whether CWA jurisdiction exists over a site, or to provide an official delineation of jurisdictional waters on the site, the Corps will provide an approved JD to accomplish that result, as soon as is practicable. NWP-2011-433 Page 3 of 3 Enclosure 6. Former Coe Manufacturing Removal Action Project Schedule Deliverable/Task • Duration Start Date F-E7,7 Date Notes: Project Preparation Activities - - 12 Wednesday,Octi:.er 19,2011_ Monday,October 31,2011 Mobilization 1 Wednesday,October 26,2011_ Wednesday,October 26,2011 Varchan,Tanks contractor,AMEC to provide oversight Erosion Control Installation and Vegetation clearing for Vehicle Access 1 _ Wednesday,October 26,2011 Wednesday,October 26,2011 Varchan to complete,AMEC to provide oversight Check Dam and Sediment Curtain installation 2 Friday,October 28,2011 Friday,October 28,2011 Varchan to complete,AMEC to provide oversight Bypass pumping behind debris dam 3 _ Friday,October 28,2011 Monday,October 31,2011 Varchan to complete,AMEC to provide oversight Field-mark In-water Excavation Areas 1 Monday,October 1,2011 Monday,October 31,2011 AMEC to complete _ _. Soil Removal Activities'' 1 Wednesday,October 26;2011' Wednesday,October 26,2011 : .�;- ;;r _ Excavation __ Wednesday,Wednesday,October 26,2011 Wednesday,October 26,2011 Varchan to complete,AMEC to provide limited oversight Soil confirmation sampling,if needed 1 Wednesday,October 26,2011 Wednesday,October 26,2011 AMEC to complete,if needed Sediment Removal Activities : .r •' 11 Monday,October 31,2011 Thursday,November 10,2011 Drop box and de-watering system setup 1 Monday,October 31,2011 Monday,October 31,2011 Varchan,Tanks contractor.AMEC to provide over,ight Excavation _ 4 _ Monday,October 31,2011 Thursday,November 03,2011 Varchan to complete,AMEC to provide oversight Sediment dewatering 11 Monday,October 31,2011 Thursday,November 10,2011 AMEC to provide oversight Sediment confirmation sampling 4 Monday,October 31,2011 Thursday,November 03,2011 AMEC to complete_ Waste Characterization and management 11 Monday,October 31,2011 Thursday,November 10,2011 AMEC to complete. Site Restoration = '` 2 Thursday,November 03,2011 Friday,November 04,2011 Creek Bank Restoration 1 Thursday,November 03,2011 Thursday,November 03,2011 Varchan to complete.AMEC to provide oversight -� Upland Excavation Areas Restoration 2 Thursday,November 03,2011 Friday,November 04,2011 Varchan to complete,AMEC to provide oversight Revegetation 1 Friday,November 04,2011 Friday,November 04,2011 Varchan to complete,AMEC to provide oversight Ship sediment drop boxes to Hillsboro for tipping and return to Site 1 Thursday,November 10,2011 Thursday,November 10,2011 Varchan,Tanks contractor,AMEC to provide oversight Clean drop boxes and cycle water through filtration system 1 Friday,November 11,2011 Friday,November 11,2011 Varchan,Tanks contractor,AMEC to provide oversight -- ---- - --------Break down filtration system and remove drop boxes from Site 1 Friday,November 11,2011 Friday,November 11,2011 Varchan,Tanks contractor,AMEC to provide oversight Removal Action Report 7"-- j 49 Friday,November 11,2011 Friday,December 30,2011 Draft Removal Report to DEQ 28 _ Friday,November 11,2011 Friday,December 09,2011 AMEcto complete DEQ Review of Draft Removal Report __ 14 Friday,December 09,2011 Friday,December 23,2011 AMEC to complete Final Removal Report 7 Friday,December 23,2011 Friday,December 30 2011 AMEcto complete I,\n.-ma.,rca a„w.o_r.>e Ynmw..c a, 10/25/2011 1 of 1 503 925 8969 v. 9. 2 ;11 2 :4 FM AT ror o ON wH7� No. 1906 P. 1/1 Fax;L5isA 62tt--07 5 PERMIT NO. 5T201 I -()OO/I/de 5i-teze •C1eanWater Services i'`��� Our commitment is dear. LOT S .Q EROSION CONTROL INSPECTION REPORT DATE // 67-11 INSPECTOR 5 ki#SUBDIVISION CQ� I/1dnuS,�r clrrry _ OWNER/PERMITEE . .‘. c_1.c SITE ADDRESS 7 q.3 Q S u. gun APPROVED . FINAL INSPECTION THIS SITE MEETS THE POST-CONSTRUCTION EROSION CONTROL REQUIREMENTS SET FORTH IN CLEAN WATER SERVICES RESOLUTION AND ORDER NOTE: IF POST-CONSTRUCTION EROSION CONTROL MEASURES ARE STILL BEING EMPLOYED ON THIS SITE TO MEET CRITERIA FOR AN APPROVED FINAL INSPECTION, THE MEASURE(S)MUST REMAIN IN PLACE UNTIL LANDSCAPING IS COMPLETE OR PERMANENT GROUND COVER IS ESTABLISHED. A COPY OF THE FINAL,EROSION CONTROL INSPECTION REPORT MUST BE FORWARDED TO THE NEW OWNER,AT WHICH TIME NEW OWNER ASSUMES THE RESPONSIBILITY FOR MAINTENANCE, REPAIR AND REMOVAL, OTHER 4 _ THANK YOU FOR YOUR COOPERATION! INSPECTOR 4,,4.— PI=TONE( 6/- 5-/Lt C® /T/G-1) CITY OF TIGARD SITE WORK PERMIT `1 t COMMUNITY DEVELOPMENT Permit#: SIT2 01 1-0001 1 TIGARD 13125 SW Hall Blvd,Tigard OR 97223 503 718 2439 Date Issued: 10/20/2011 Parcel: 25101 CA00400 Jurisdiction: TIGARD Site address: 7930 SW HUNZIKER ST Project: Coe Manufacturing Subdivision: 2007-064 PARTITION PLAT Lot: 1 Project Description: Erosion control only for removal of contaminated soil Contractor: VARCHAN ENVIRONMENTAL CONSTRUCTION Owner: GOULD FAMILY PROPERTIES VI LLC PO BOX 2830 527 ATANDO AVENUE HILLSBORO,OR 97123 CHARLOTTE,NC 28206 PHONE: 503-693-7111 PHONE 800-951-4140 FAX FEES Description Date Amount Specifics: Info Process/Archiving-Sm Sheet(up to 10/20/2011 $2.00 11x17) Erosion Control 10/20/2011 $80.00 Type of Use: COM Erosion Plan Review CWS 10/20/2011 $26 00 Class of Work: OTR Erosion Plan Review COT 10/20/2011 $26.00 Project Valuation: $0.00 Site Specifics: Excavation Volume. cu.yd. Fill Volume cu.yd. Impervious Surface' sq ft Engineered Fill. Soil Report Required. Paving. Grading Landscaping: Site Prep Storn Drains Retaining Wall' Fire Underground: Accessible Parking: Fence Total $134.00 162:77 en and Reports(Conditions) 1 Ersn Cntrl 503 681-4444 This permit is issued subject to the regulations contained in the Tigard Municipal Code, State of OR Specialty Codes and all other applicable law. All work will be done in accordance with approved plans. This permit will expire if work is not started within 180 days of issuance, or ' . .ended for more the 180 days ATTENTION: Oregon law requires you to follow the rules adopted by the Oregon Utility • ification Center. .s- •es are set forth in OAR 952-001-0010 through OAR 952-001-0090 Yo . ••taro a copy of the rules or di -ct questi.ns to OUNC by ing 5• .32.1987 or 1.800.332.2344 1s,ued By: I /� / / Permittee Signature: ,. � Y1�/124 Call 503.639.4175 by 7:00 a.m.for the next available inspection date. This permit card shall be kept in a conspicuous place on the job site until completion •f the project. Approved plans are required on the job site at the time of each inspection.