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SLR2003-00007 . " � NOTICE OF TYPE I DECISION SENSITIVE LANDS REVIEW (SLR) 2003•00007 CITY OF TIGARD DERRY DELL SENSITIVE LANDS REVIEW commun=ty��e�pment S�aping�BetterCommunity 120 DAYS = 9/12/2003 SECTION I. APPLICATION SUMMARY FILE NAME: DERRY DELL SEWER REPLACEMENT SENSITIVE LANDS REVIEW CASE NO.: Sensitive Lands Review (SLR) SLR2003-00007 PROPOSAL: A request for Type 1 Sensitive Lands Review approval to replace a damaged sanitary sewer line. Will require less than 50 cubic yards of removal/fill. APPLICANT/ OWNER: City of Tigard Attn: Vannie Nguyen Tigard, OR 97223 LOCATION: Greenspace west of 13385 and 13355 SW 110�' Ave; WCTM 2S103DB, Tax Lot 04900. ZONING DESIGNATION: R-4.5: Low-Density Residential District. The R-4.5 zoning district is designed to accommodate detached single-family homes with or without accessory residential units at a minimum lot size of 7,500 square feet. Duplexes and attached single-family units are permitted conditionally. Some civic and institutional uses are also permitted conditionally. APPLICABLE REVIEW CRITERIA: Community Development Code Chapters 18.370, 18.390 and 18.510. SECTION II. DECISION Notice is hereby given that the City of Tigard Engineer's designee has APPROVED the above request. The findings and conclusions on which the decision is based are noted in Section IV. 5LR2003-00007—DERRY DELL SEWER REPLACEMENT SENSITIVE LANDS REVIEW PAGE 1 OF 3 NOTICE OF TYPE I DECISION , � THIS APPROVAL SHALL BE VALID FOR 18 MONTHS FROM THE EFFECTIVE DATE OF THIS DECISION SECTION III. BACKGROUND INFORMATION Site Information and Proposai Description: The Capital Facilities Division of the City of Tigard is requesting approval to replace an existing sewer line with a new line. The line would be constructed across Derry Dale Creek near SW 110th Ave. The work consists of the excavation of approximately twenty-nine cubic yards. SECTION IV. APPLICABLE REVIEW CRITERIA AND FINDINGS COMPLIANCE WITH COMMUNITY DEVELOPMENT CODE SECTIONS: The Tigard Community Development Code (TDC), Sensitive Lands Review Section, states that, "The City Engineer shall review the installation of public support facilities such as underground utilities and construction of roadway improvements including sidewalks, curbs, streetlights, and driveway aprons by means of a type I procedure, as governed by Section 18.390.030 subject to compliance with all of the standards in this chapter." The City is replacing a sewer line that is damaged within a drainageway. All applicable permits from CWS and the USACOE have been obtained. DRAINAGE WAY The extent and nature of the proposed land form alteration or development will not create site disturbances to the extent greater than that required for the use. There will be no change of use. Disturbance will be limited to that required to install the sewer. 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. The work will be subject to an erosion control plan and will be inspected. In addition, a Nationwide Permit in compliance with Section 404 of the Clean Water Act regulates erosion and sediment control. The water flow capacity of the drainage way is not decreased. The flow characteristics of the drainage way will not be altered. Where natural vegetation has been removed due to land form alteration or development, the areas not covered by structures or impervious surfaces will be SLR2003-00007-DERRY DELL SEWER REPLACEMENT SENSITIVE LANDS REVIEW PAGE 2 OF 3 NOTICE OF TYPE I DECISION replanted to prevent erosion in accordance with Chapter 18.745, Landscaping and Screening. Restoration will be accomplished in accordance with the Corps of Engineers Permit. The drainage way will be replaced by a public facility of adequate size to accommodate maximum flow in accordance with the adopted 1981 Master Drainage Plan. The drainage way will remain in place and unaltered. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. The USACOE permit has been obtained and is attached to this application. 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. The land form alteration is not adjacent to the 100-year floodplain. SECTION V. PROCEDURE AND APPEAL INFORMATION Notice: Notice was mailed to the applicant and owners. Final Decision: This is a Type I Sensitive Lands Review. As such, the Engineer's decision is final on the date it is mailed or otherwise provided to the applicant, whichever occurs first. The Director's decision may not be appealed locally and is the final decision of the City. THIS DECISION IS FINAL ON MAY 20, 2003 AND BECOMES EFFECTIVE ON MAY 21, 2003. Questions: If you have any questions, please call the City of Tigard Engineering Division, Tigard City Hall, 13125 SW Hall Boulevard, Tigard, Oregon at (503) 639-4171. 1 � � ��"� May 20, 2003 APPROVED BY: Greg Berry, P.E. DATE SLR2003-00007-DERRY DELL SEWER REPLACEMENT SENSITIVE LANDS REVIEW PAGE 3 OF 3 NOTICE OF TYPE I DECISION � ' PRE,APP.HELD BY: CiTY OF TIGARD PLANNING DIVISIO`N _ ��, 131�25 SW HALL BOULEVARD TIGARD, OR 97223-8189 503.639.4171 l503.684.7297 CITY OF TIGARD OREGON LAND USE PERMIT APPLICATION File# ; ( -�_ ,. ; Other Case# ; _ Date � By � Receipt# Date Application Complete TYPE OF PERMIT YOU ARE APPLYING FOR ❑AdjustmenWariance (I or II) ❑ Minor Land Partition (II) ❑Zone Change(III) ❑ Comprehensive Plan Amendment(IV) ❑ Pianned Development(III) ❑Zone Change Annexation (IV) ❑ Conditional Use (III) �ensitive Lands Review I�II or 111) ❑Zone Ordinance Amendment(IV) ❑ Historic Overlay(II or III) ❑ Site Development Review(II) ❑ Home Occupation (II) ❑ Subdivision (II or III) ress i avai a e �P.��l��E u�� pF /�5 � /3355 �CV //D�'"' �t/E , �SI D 3 � b4�1� �rry o� T�,ev .3 � �3�� sw �� u�� /��,a� D�,o,� 97�3 .�3 �31-�/�I/ 1/�,�,��c /�� 50 3-l0 3q- �2/ �---. �s i more an one Ci�i D� ��G-7�� 3��5 � �� .t�w.o T�� D�'��, � 97�� . ; . . , 50 3 ��i-- �/�/ *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 s ace rovided on the back of this form or submit a written authorization with this a lication. ease e spea ic 7T�e O D � S 2 � APPLICATIONS WILL I�OT BE ACCEPTED WITHOUT ALL OF THE REQUIRED SUBMITTAL ELEMENTS AS DESCRIBED IN THE "BASIC SUBMITTAL REQUIREMENTS" INFORMATION SHEET. � � 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. Q � f'- `��-r,..� � , � D 3 ' Owner's i nature Date Owner's Signature Date Owner's Signature Date Owner's Signature Date Owner's Signature � Date Applicant/AgentlRepresentative's Signature Date Applicant/Agent/Representative's Signature Date MEMOIZANllUM April t0, 2003 To: Brad Kilby, Ciirrent Planning Division From: Greg Berry, Engineering �� Subject: Request for Sensitive Lands Review Project: Sewer realignment across Derry Dale Creek near SW 1 lOth Please accept this as a request for Type I Sensitive Lands Review for this project. The review is required for work in a drainageway as required by the Community Development Code at 18.775.020 E 1 b. Project Description: The purpose of the project is to replace a damaged by constructing a line across the creek and connecting it to existing manholes. Attached are computations showing that the required excavation is approximately twenty nine cubic yards. Also attached is a CWS Service Provider Letter and a Corps of Engineers Permit. Figure 1 of the permit is a vicinity and site map and Figure 2 shows the location of the proposed sewer. Please let me know of any other required items. 1 1 APPROVAL CRITERIA . DrainaQeway 1. The extent and nature of the proposed land jorm alteration or development wil! not create site disturbanc.es to the extent grealer than that required jor the use. There will be no change of use. Disturbance wi(1 be limited to that required to install the sewer. 2. The proposed land form alleration or development will not result in erosion, slream sedimentation, ground instability, or other adverse on-site and off-site effects or hazards to life or property. The work will be subject to an erosion control plan and will be inspected. In addition, a Nationwide Permit in compliance with Section 404 of the Clean Water Act regulates erosion and sediment control. 3. The waterJlow capacity of the drainageway is not decreased. The flow characteristics of the drainageway will not be altered. 4. Where natural vegetation has been removed due to land form alteration or development, the areas no! covered by structures or impervious surfaces will be replanted to prevent erosion in accordance with Chapter 18.745, Landscaping and Screening. � kestoration will be accomplished in accordarice with the attached Cocps ofEngineers Permit. S. The drainageway will be replaced by a ptrblic faciliry of adequate size to accommodate maximum flow in accordance with the adopted 1981 Master Drainage Plan. The drainageway will remain in-place unaltered. 6. The necessary U.S. Army Corps of Engineers and State oJOregon Land Board, Division oJStale Lands approvals s{:all be oblained. U.S Army Corps of Engineers permit is attached. 7. Where land form alterations and/or development are allowed within and adjacent to 1he 100 year Jloodplain, the City shall require the consideration oj dedication of su�cient open land area wilhin and adjacent to the floodplain in accordance wilh the Comprehensive Plan. The land form alteration is not adjacent to a 100-year flood plain. I VENG�GftF('rISF WER�Rcal�gnmem at Deny�cll SLR\Sensitive LJnds Permn ApplicatK>n doc ��.�� DEPARTMENT OF THE ARMY PORTIAND DISTRICT,CORPS OF ENGINEERS � P.O. BOX 2946 �� PORTLAND,OREGON 97208-2946 -� REPIV 70 May 10, 2002 � � � ATTENTION OF: � � ^ � rru D ii�. Operations Division �� Regulatory Branch Corps No.: 2002-00290 MAY 14 2002 CITY. OF• TIGARD Ms. Vannie Nguyen City of Tigard 13125 SW Hall Boulevard Tigard, Oregon 97223 Dear Ms. Nguyen: The U.S. Army Corps of Engineers (Corps) has received your permit application requesting Department of the Army authorization to dig a trench through Derry Dell creek and adjacent wetlands to install a sanitary sewer line as shown in the enclosed drawings (Enclosure I). The project is located in Section 3 of Township 2 South, Range l West, in Tigard, Washington County, Oregon. This letter verifies that your project is authorized under the terms and limitations of Nationwide Pern�it No. 12 (utility line activities). Your activities must be conducted in accordance with the conditions found in Special Coc�ditions (Enclosure 2), General Conditions (Enclosure 3), and the following project specific conditions: ' a. Trenching will occur in the dry and during the ODFW recommended in-water work window for tributaries to the Tualatin River, July 1 -- Septcmber 30. Within the ordinary high water line, trenches will be backfilled with native material and capped with clean, rounded, uniformly-graded gravel with a size composition and depth as exists naturally. b. Standard best management practices for erosion control, including silt fences and straw bales, will be installed to prevent turbidity downstream of the project site. c. All damaged areas will be restored to pre-work conditions including restoration of original streambank (ines, and contours. d. All exposed soil surfaces, including construction access roads and associated staging areas, will be stabilized at finished grade. Stream banks will be stabilized with jute mat and bare ground will be seeded with native species, including spike bentgrass and American sloughgrass, immediately following the installation of the new sewer line. On cut slopes steeper than 1 :2, a tackified seed muich will be used so that the seed does not wash away before germination and rooting occurs. [n steep locations, a hydro-mulch will be applied at 1.S times the normal rate. -2- e. Sitka willow cuttings will be planted 2 feet on center along the stream with in the 15-foot wide easement. f. Any lazge woody debris disturbed during construction will be left on site in the wetland area as woody debris for wildlife habitat. The Qregon Department of Environmental Quality has provided their Certification Conditions (Enclosure 4). You must also comply with these conditions. We also direct your attention to the Special Condition m, (Enclosure 2), that requires the transfer of this permit if the property is sold and General Condition 14 that requires you to submit a signed certificate when the work is completed. A "Compliance Certification" is provided (Enclosure 5). Failure to comply with any of the listed conditions could result in the Corps initiating an enforcement action. This authorization does not obviate the need to obtain other permits where required. Permits, such as those required from the Oregon Division of State Lands (ODSL) under Oregon's Removal /Fill Law, must also bc obtained before work begins. This verification is valid for a period of 2 years from the date of this letter unless the nationwide permit expires, is modified, reissued, or revoked prior to that date., All the nationwide permits are scheduled to be modified, reissued or revoked in March 2007. If you commence or are under contract to commence this activity before the date the nationwide permit expires, is modified or revoked, you will have twelve months from the date of the modification or revocation to com�lete the activity under the present ter►ns and conditions of the cunent nationwide permit If you have any questions regarding this nationwide permit verification, please contact Ms. Kathryn L. Harris at the letierhead address or telephone (503) 808-4387. Sincerely, ,- ��^--�� awre e C. Evans Chief, Regulatory Branch Enclosures Copy Fumished: Oregon [)ivision of Statc Lancis (('c>lin MacLarcn) Ore�on [)epartment of f�,nvironmental Quality (Melville) � � NI �b A �� o�' w. `'" S � � _ Y cuao.s - fi` � < M � Q k d = �` �a �cDO�.yp z 9U.1 YDUMT.W WD lO�t� p Y scFJ s[�w. • � alaaM � R�(t1 � PIlQ,ECT T1QY VICINITY MAP � _ � � v �� ,o _ ARBR� — CS � � � � _ �___ � �, �j PRO ECT OCA TION _ � � 1 ; ` l �� \ �� a MIRq J a W l � � � -� J > " � J � _ W � a Z � n w r�,, 0 .r C � w -- � � APPLICANT: Vannie Nguyen, Engineenng Site Location Map Manager,CityofTigard Engineering Dept. WAT`ERWAY:Derry Dell Creek&Wetland ACTNITY: l lOth Ave.sanitary sewer realion DATE: March 2002 SI{EET: 1 OF 5 SCALE: Not to scale Zooz - �o zy� f',.� <' / . ; � � � i � � � ,:Q� � � , __� Q I � , ,�.� � . � � -�x �va- �� 1 c�v � � i ax 10+ 9� � I ; � � . � � �-; I � � � > Q � � � ' Q ,c�e�-� ° pl ��Ucnj P1v-�1� - ? Sr-, �'✓�(lcx�2 i a � plo+1 —�. �-----�- �. „-----,------ , ,� ,, , - . , :- _ - � �: __ _ .'�' Q -� � �aSc�a�} — -------;, --- „ - �'' . .: ..��. '�� __� —� � ^,`� Q--�—`� �"��'��y � "'� ----------- �`"� �!�� _ � �� `<�r'�- . -� ,3�,�,��,`1 � , .. ,. _ - _____ , �. i�1��+�_3 .�,;�� _ ., '� ��,--- �;,k.,� p��,�.;��-�Y--� - � ' ; , , � � � ve c9��: 5 ,�� Cc/�, � Q � Gm,f r`i'n��?-j a �j_C (' i c�( � � �`Q Gcr�M j � � �� I COnSf/ucfiOn en(ronCe � i see defo%I snee� S51 - -�_. � v �, , ; T��x I�,-�- )�, f � � i � � � �� i , '; � � ',1 --. � ; � , N � �` � .,. . I I i i _ ._ I I Q i �` I � ' LbGEND � ° 110th Ave. Sanitary Sewer Realignment tiote: w'etland boundaries mapped by hand by FES. � tilap accuracy +/. 5 feet. Study area= 120 ft x 30 ft. � 4 ' ` Wetland De1lIIeatlOri ° '��!j;, Fishman °r, g „ � ��1 Environmental & Natural Resource Assessme n t � �� •`�•`�`'`� Services, LLC WETLAND BOUNDARY,VEGETATED CO ��•�•� �� r6��denno De ar;ment. � ' CONSUL7ANTS IN ECOLOGY AND &SAMPLE PLOT LOCA ONOR COMMUNITIES � � I i.�ch=..0(eet NATURAL RESOURCE MANAGEMEN7 Figure 2�� February 2002 Project � 02U�� OUi OF STREEi STREET AR£A /V2�A SAMRI T AI�AG�N� � IIATCH E705TiNC YAT�Rfl►l-4� MN . TOPSOI' ~ �� 8�►SF YATERtK-8' YW. 6' w�1- ----� U � � � < �7 �� m� t (�� t Z O � � O , �1 � \ n .� �� - �� .� . � � 6� �f BEOOwG 80.0tA► OU T90E OF' PtP£ BQl 6�y�y � 6.YN 3/a' -0 CRV9�E;p �2ECwTE ��/ � � j� \\%�\/��\\�\\j��j TR�?!CN FOUf�QAT1QM S TAgu�TIpH� � �p� NOTES: 1. JOINTS TO BE TACKEO AND SANDEO. 2. SAWCUT StiAl.� 6E TACK COATED WITH 617UMINUS ASPHALT c�AULS10N. TRENCN B�CKFI!„!. AP�'LICANT: Vannic Nguyen,Engineering � Manager,City of Tigard Engineering Dept. NOT TO SCALE WATERWAY: Derry Dell Creek& Wetland ACTIVITy� 1 l Oth Avc sanitary sewer rcalign. DATE: March 20U2 SHEfi�1': 3 OF 5 SCALE: Not to scale �DZ cJ0zcj0 aasr..a aeWC a.+.c u.n o. aroc v�s•+a (v�wc:) ' �' w. oa nrs[o c�oc sw.�c _ � I ��'�'� �RCAf 1��t1 �[ �Ei1C�N[D 1p f►�R O�bOMAI CD�10�T�pN, - / OO�KIID • � tr�+C wwtM wTpw�. ►tJ++r usT. ` f7�OLOM COMf'�0. wM0 �CKDCiwt�pr r�T wTL1RK �\ M�TM wO�CwM G�p�. �CQ. OR /V'I�pbCD CGUKj �uu atvo ►tu wa� Cr o.crx aw.� w w.�� or s• rwtT ro. or a[t�t wu �wo w �•+.�,r o► s'o� uw s+ot or asn�eecn w�c� no ♦ w....�,r or �� n.o..stoe sunr�a (r..} oos / �u �c �a�co �. �...�� or s• (rw�, � MfTKAA��OM lu�ll �C �/t M'MOKD \ YJwl�ACT1J�R�MfTRJCflOMf, / / \ A1�,xA« �}(x .�.rat u[rR � '� r'+- (*�') OO �l.l Ori�NR�CO C�KCrt �OT10r MCw� C4.L�t lOTIOr �� K OeODOr OfiiwOl wt w►1Enu� l�uU K CDv0�E0 fr rr. Q. f0 R00[ (M� IlOOt fu�.l C7[1F�0 v to 1�w�c rut.' ►to�r iwo ..on� or r�araC wt�aw� ]' w��r COKJt (irr� su�1 K CO�MnCfiO r+►t►K rwtp�K �t��rt WtI OF UKOt OeOip� uotL: r t.[ss nuM s' corc�t c�pcTC w o�e ..o�uac �o a. oR c-�sao � ►+r...a�r.c �•c �coo.� .s vmr� • �p�1 ot ' o t .= ti o� ♦ o �e6 • q� } ♦ •� ie 1 • �� i � • y � �0�• �� • � • � D�iT � � � � � � K r+.s+�..w �w.w�� APPL[CANT: Vannie Nguyen, Engineering Manager,City of Tigard Engineering Dept WATERWAY: Derry Dell Creek&Wetland ACTIVITY� I 10[h Ave sanitary scwcr rcalign DATE: March 2002 SHEfiT:4 OF S SCALE Not to scale ,700? - BD? -�j D � � � - — ---- ---- -- -- -- --- 00 = �O - '"� � v�R r.� � ~=4' .� � HORZ.• 1 "=40� � , N pT � Ii 200 � � `O ° ' .� o � ^ � ^ � p � � W � �i � Exis t. groun d 1 � � C�eek ec tion � � / � , � � 192 � _ _ _ _ _ , , , � 17 LF 8" VC S= .0234 �n W — - --- �y (n Z O O � � � � � I ., � � � � I � �84 1� , o . ` 11 � � - � II II � W O .0 ,C W W W ------ ��f�0 ��-f-�Q APPLICANT: Vannie Nguyen, Engineering Manager,City of Tigard Engineering Dept. WATERWAY: Derry Dell Creek&Wetland ACTIVITY: I lOth Ave. sanilary sewer realign. DATF. March 2002 Sf{EET: 5 OF S SCALE: As shown -��OZ- DOz� D Special Conditions (a) In-water Work Windows: All in-water work, including temporary fills or structures, shall occur during the period of July 1 through September 30. Exceptions to these time periods requires specific approval from the Corps. On tribal lands the Corps will coordinate exceptions to the timing guidelines with the Environmental Protection Agency. (b) Upland Disposal: All excess material will be taken to a suitable upland location for disposal. The material shall be placed in a location and manner that prevents its discharge into waterways or wetlands. (c)Heavy Equipment: Heavy equipment shall be operated from the bank and not placed in the stream unless specifically authorized by the District Engineer. (d)Fish Screening: Fish Screening will comply with standards approved by the National Marine Fisheries Service or the Oregon Department of Fish & Wildlife,as appropriate. (e) Cultural Resources& Human Burials: If at any time, during the conduct of the work authorized, the permittee or agent(s)discovers human burials, cultural resources,or historic properties, as identified by the National Historic Preservation Act, that may be affected, they must notify the District Engineer. (n Fish Passage: Perrnittee shall insure activities authorized by nationwide permit will not restrict passage of aquatic life. Activities such as the installation of culverts or diversion structures, or other modifications to channel morphology must be designed to be consistent with fish passage standards developed by the Oregon Department of Fish and Wildlife(ODFW) and the National Marine Fisheries Service(NMFS). This guidance can be found in the most recent edition of the document entitled "ODFW standards and Criteria for Stream Road Crossings". The streambed shall be returned to pre-construction contours after construction unless the purpose of the activity is to elirninate a fish barrier. (g) Riparian Vegetation Protection & Restoration: When working in waters of the C7nited States or riparian areas the construction boundary shall be minimized to the maximum extent practicable. Permittee shall mark and cicarly define the construction boundary before beginning work. Native riparian vegetation will be successfully established along tributaries where the vegetation was removed by construction. The plantings shall start at the ordinary high water mark and extend 10 feet back from the top of the bank. The plantings must be completed by the end of the first planting season following the disturbance. (h) Erosion Controls: fldequate erosion control devices shall be installed and maintained in good working order throughout construction to prevent tlie unauthorized discharge of material into a wetland or tributary. The devices shall be installed to maximize their effectiveness, i.e. sediment fences st�all generally be buried or similarly secured. These eontrols shall be maintained until permanent erosion controls are in-place. F,ncl. 2 (i) Maps and drawings: In addition to the ite►ns required in nationwide permit general condition 13, all preconstruction notifications shall contain maps showing the project location as well as plan-view and cross- sectional drawings showing the proposed work. The map(s) shall be of a scale and detail to clearty identify the project location(s). Drawings shall be sufficient in number and detail to accurately portray the project. (j) Bank Protection: Riprap shall be clean, durable, angular rock. The use of other materials such as broken concrete, asphalt, tires, wire, steel posts or similar materials is not authorized. The project design shall minimize the placement of rock and maximize the use of vegetation and organic material such as root wads to the exten[practicable. Riparian plantings s}�all be included in all project designs unless the permittee can demonstrate they are not practicable. The permittee must notify the District Engineer in accordance wiih nationwide permit general condition #13 if the activity involves the placement of more than 10 cubic yards of riprap per 100 linear feet of streambank. (k) Mitigation Sites: The permittee must notify the District Engineer in accordance with nationwide permit general condition #13 if the proposed activity may impact a wetland created, restored, enhanced or protected to fulfill the compensatory mitigation requirements of a previous Corps permit. (1) Inspection of project site: The permittee must allow representatives of the Corps to inspect the authorized activity to confirm compliance with nationwide permit terms and conditions. Personnel from the Oregon Department of Environmental Quality and the Department of Land Conservation and Development are considered to be authorized "representatives" for the purpose of Section 401 Water Quality or Coastal Zone Management inspections. For projects on tribal land the Environmental Protection Agency is considered an authorized representative. A request for access to the site will normally be rnade sufficiently in advance to a(low a property owner or representative to be on site�vith the agency representative making the inspection. (m) Sale ot property/transfer of permit: If you scll the property associated with this permit, you must transfer the permit to the new owner(s)and obtain their signature(s). A copy of this permit with the new owner(s) signature shall be sent to this office to validate the transfer of this permit authorization. �.°�.��°q� — ---- -- --- _ �� Division of State Land� � �F� � d � 775 Summer Street NE, Su�tc 10� � :z � Salem, OR 97301-127� � h luhn A KitLhahcr, MD..Go�ernor a�� (503)37�3g0= FAX (503)378-484-� http://statelands.dsl.state.or.u� April 30, 20Q2 State Land Board .]D02/25375 lohn A- Kitzhabc� VANNIE NGUYEN Govemo� CITY OF TIGARD Bill Bradbury 13125 SW HALL BLVD Secretary of Scatc TIGARD OR 97223 Randall Edwards State Tre�surer RE: State Application Number 25375-NSP Dear Ms. Nguyen: We have received your application to realign an existing sanitary sewer within wetland and Derry Dell Creek in Section 3, Township 2S, Range 1 W, Washington County, Oregon. The Division of State Lands requires a permit if you plan to remove, fi11 or alter 50 cubic yards or more of material within the banks of most waters of the state. State designated Essential Salmon Habitat streams and State Scenic Waterways are exceptions in that any amount of removal, fill or alteration typically requires a permit. Based on your applicatio�, your project involves removal or filling of less than 50 cubic yards of rnaterial IN WATERS THAT ARE NOT CURRENTLY DESIGNATED Essential Salmon Habitat or State Scenic Waterways; therefore, a State removal-fill permit is not requ+red. You must also receive authorization, when required, from the U S. Army CQrps of Engineers and local planning department before beginning construction. If you have any questions, please call Colin MacLaren at 503-378-3805, extension 244. Sincerely, � Lori Warner Manager " Field Operations---Western Regian CM_Jed J�AttachmentAwestIASWSP No State Permit Required LAS�25375-NSP.doc c Kathryn Harris, Corps of Engineers Washington County Planning Fishman Environmental Services, L�C RECEIVEO Ans'd............ � � File Number CleanWater� Services G Our commilmcnl is cicar ` � Clean Water Services Jurisdiction Tigard Service Provider Letter Map & Tax Lot 2S103D6 4900, 900, 1000 Ow er -May 29, 2002 City of Tiqard Site Address SW 110 Avenue, north of Address Vanrne Nquyen SW Gaarde St, Tiqard 13�25 SW Hall Blvd Proposed Activity Sarntary Sewer Realignment Tigard, OR 97223 Phone 503-639-4171 x.375 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 00-7). YES NO YES NO Natural Resources Altematives Analysis i Assessment(NRA) I � � Required � I � Submitted (Section 3.02.5) i District Site Visit ❑ � Date: — I , � , Tier 1 Alternatives Analysis � � --- � � ❑ � i -- � ; Concur with NRA/or ! i - ---- -----` -�--- � submitted information j � j � � Tier 2 Alternatives Analysis � � i � � � ------ - � � _- ! I � Sensitive Area Present � � � ----- ` � On-Site — ' � � Concur with Alternatives a ` � �_____ � � � I Analysis � � ; a ; iSensitive Area Present -- - ----� ---- -� Off-Site ' � � � Vegetated Corridor Mitigation ; ,� ; ❑ � Required � � � i Vegetated Corridor � � � On-Site Mitigation ' I � � Present On-Site Must restore easement area to ' � ❑ ___ � ; good condition buffer ; ! � Width of Vegetated � Corridor(feet) 50 feet Off-Site Mitigation ; � � i Condition of Vegetated Planting Plan Attached � COffidOf Good/degraded Plan requlred prlor to any clearing, I � � - greding or construaion i Enhancement Required i � � EnhancemenVrestoration � — ___ start and completion dates ��02 10/1/02 I i Encroachment into � - Vegetated Corridor � ❑ � - - - RSAT(no longer required) I � � (Section 3.02.4) -__ I Type and Square Footage � Seweflifle �---- ----- of Encroachment � easement I Geotechnical Report required � � � � � -- Allowed Use _-- -----------t- � (Section 3.02.4(b)) � � I � Conditions Attached ; , _ � - -- �-- -- -- � ❑ i _ � � This Service Provider Letter does NOT eliminate the need to evaluate and p�otect water quality sensitive areas if they are subsequently discovered on your property. Page 1 of 3 File Number ( (� S In order to comply with Clean Water Services (the District) 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 which may negatively impact water quality, except those allowed by Section 3.02.3.a(1), (2),or(3). 2• No structures, development,construction activities, gardens, lawns,application of chemicals, uncontained areas of hazardous materials as defined by Oregon Department of Environmental Qualiry, pet wastes, dumping of materials of any kind, or other activities shall be permitted within the vegetated corridor which may negatively impact water quality, except those allowed by Section 3.02.4.b.1)(a through h). 3- The vegetated corridor width for sensitive areas within the project site shall be a minimum of 50 feet wide, as measured horiiontally from the delineated boundary of the sensitive area. Responsible for construction easement area only. All vegetated corridor areas within the easement shall be restored. 4. Prior to any�site clearing, grading or construction the vegetated corridor and water quality sensitive areas shall be surve�ed, staked, and temporarily fenced per approved plan. During construction the vegetated corridor shall remain fenced and undisturbed except as allowed by Section 3.02.4.b.4. and per approved plans. 5. Prior to any activity within the sensitive area, the applicant shall gain authorization for the project from the Oregon Division of State Lands (DSL)and US Army Corps of Engineers (USACE). The applicant shall provide the District with copies of all DSL and USACE project aufhorization permits. , 6. For vegetated corridors 50 feet wide or greater, the first 50 feet closest to the sensitive area shall be equal to or better than a "good"corridor condition as defined in Section 3.02.6, Table 3.2. (within the easement area--both temporary and permanent) 7 Enhancement/restoration of the vegetated corridor shall start by the 1�day of July 2002 and be completed by the 1�'day of October 2002. Clean Water Services shall be notified 72 hours prior to the start and completion of enhancemenUrestoration actrvities. Enhancement/restoration activities shall comply with the guidelines provided in Appendix E: Landscape Requirements (R&0 007:Appendix E). 8• Prior to any site clearing, grading or construction, the applicant shall provide the District with the required vegetated corridor enhancement/restoration plan. 9� Maintenance and monitoring requirements shall comply with Section 2.11.2 of R8,0 00-7. If at any time during the warranty period the landscaping falls below lhe 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. 10. Performance assurances for the vegetated corridor shall comply with Section 2.062, Table 2-1.4 and Section 2.10, Table 2-2.2. 11 Appropriate Best Management Practices (BMP's) For Erosion Control, in accordance with the CWS Erosion Control Technical Guidance Manual shall be used prior to, during, and following eartf� disturbing activities. Page 2 of 3 File Number 12 Prior to construction, a Stormwater Connection Permit from the District or its de ' � pursuant Ordinance 27, Section 4.B. signee is required 13. Activities located within the 100-year floodplain shall comply with Section 3.13 of R&O 00-7. 14. Removal of native, woody vegetation shall be limited to the extent practicable. 15. Removal of invasive non-native species by hand is required in all vegetated corridors rated �9�". Replanting is required in any cleared areas larger than 25 square feet. 16. Final construction plans shall clearly depict the location and dimensions of the sensitive area and the vegetated corridor(indicating good, marginal, or degraded condition). Sensitive area boundaries shall be marked in the field. 17. Final constructlon plans shall include landscape plans. Plans shall include in the details a description of the methods for removal and control of exotic spec(es, location, distribution,condition and size of plantings, ex(sting plants and trees to be preserved,and installation methods for plant materials. Plantings shall be tagged for dormant season identi�cation. Tags to remain on plant material after planting for monitoring purposes. 18• A Maintenance Plan shall be included on final plans including methods, responsible party contact information,and dates(minimum two times per year,by June 1 and September 30). 19- Should final development plans differ significantly from those submitted for review by the District, the applicant shall provide updated drawings, and if necessary, obtain a revised Service Provider Letter. Please call (503) 846-3613 with any r�uestions. !`7�- `� ' ` �. Heidi K. Berg Site Assessment CoordEnaior Page 3 of 3 , � � 4b C ITY 0 F TIG ARD " A �� OREGON `�+ � °� �,S � � � _ � � PLANB FOR PROP08ED PROJECT e�� - � � � _ � N 4 � d a a � c�ue ��,,,y�p : 9UlL YOUNTNN NO Bd�TA qp 110TH AVENUE g� BfEF BEM�RD. � WRH/W I� SANITARY SEW�R REALIaNMENT `"'°'�'�'� Nµ^� InvEa INDEX oF SHEETS 110TH AVENUE ACRO88 DERRY DELL CREEK 1 PLAN AND PROFlLE VICINITY MAP TO BE 3UPPLEMENTED BY THE CITY OF TIa11RD DESIGN BTANDARD3 DATED JULY 1b, 1998 � � - -- _ � �� r --, � �� i i �-- - � ` I -----� (J� � � i � —____ �� . � ' �.--_ /��F' � �v., � �----l I� � � �� - � � � � � � , I - - �:, �, / � , ; , . � /�� i� _--a V �--- PARK ST ' N � � ' � � ' � � � �� o ---—� ti � �� o,�' i, �---;--'�? �� PROJECT LOCATION \\ � �� , __ � � , �-G�� i � - � -„ MIRA - �---,� � � a �---_. a .- � � ---j � � � -- � � - �c� — ;W � � ;� � i � Q — � Q > . _.--ti o — i — � � '__ �� - _ _ � � � � � � �� , Z � r ,, �/% ��, �\' i � ' _ , � �� I I � � i I � � � - __�___—� i _ �--- ,- , ---1--- ,-- - - - - - L�+2�2ZY�3°c�� rm+nav: a.oa�w.na�+e�w�e eew..w.osovue s �PR VANMIE T. NGUYEN, P.E. tn�apm u�a7�MeNbcatian C�t�. 11�as�n�es an wt�vf� n LNR D32-WI-0010 WR%1-OOI-0090�eu wa � 41 M ro�d,caoy.er n. �erow.�nv cw��.. � �`+��* o�a�airc�.m� CITY OF TIGARD �:" t°" """'°""°'`"'°ip°""'"''"°""°°'°" � ENGINEERING DEPARTMENT i�:fsw :n-ioes) �� °'R 13125 S.W. HALL BLVD. �-800-JJ2-234♦ �. r n,�` �, as� TIGARD. ORECON 97223 � '�t N�� torH �vENU[ L.NiT�pr FAX:E� 5033 684-729 7 ��, �� SfM�ER REAIJCNYENT �� yyyyW.��.nCARD.OR.US rw.[cr wrc ElofiMG CAEEK BMllc-� i u��n��N p�cv�s� � DRAWINC PLOTIFU AT I t*�� s°Lec°i�°s`,a°�""�`o ro �� HALF THE NOTED SCALE n�eirt omoNK towana+, � � � cwn�crtn��c�om ( u9NC N�nv[Yw7Eq111L RAMT uST. � ' � I EROSOM CON7�10L ANO IIEKCETA71011 Y�T YATE�lAL A' I ' IMORIM�u[itlC/iN GREEM.RC[L OR MPNOVEO EOUAL) I V . � I I I . I 9ulA Ex�EiM NLL IENGM V'f71EEx l�NK.A � ' i YMYVY 0�7�P11ET TOP 0�qKE%BANK MIO A �'`�i D wr«ww a s ar�c�w s�x ar as.u�reco�nc�ro � � I .n �\ •wr,wur a�'xtow w�i[R su��¢(rw).ewos ,�1 � ' � A1ALL BE 1([YEO IM,M1N�YU4 Oi 6�(T9). I�i � � iNSTALL�110M AuLL BE VEq MvROKO � � I \ ��NIIF�CNi1ER'S w1TRUCTpN3.� / ,_ ' ' � ` � � � Existing wetlonds ; �� i r � oreo rzeu�re� � � < �.. � ll+l6.81 ��--;�,] X Connect to exist � ti� -;�� 10+20 t�� ' MH No. 2 I � — 1 Instal! �`�'-' ' � � ' � > benfonite , \\�I \ r ��MIN. (iW) � 1 � �,'` lrench p/ug , � � � ♦ I � , ', ' .. �`a 1 . _ . > � .._ � . . — — � ti�s � „ , � � � . , �. � � � �� s co�sr - �� --- _ - - a o . � _. - � - - ,_ _: _ . . � �� :�� 1 � � Y eosement �-.. �,,��-•--�- . � - g � �� a '�. � � � � 1 ; .__s� �,�, - - _ I _ - `6 ir 8� D� s� � :— _. . — �.a5�o�EK�T�,�., � y > ` ��: � _ —��r_ - ' -- -I -a �'� . : MIRA CT .. _ s -� - - --- � ,; �. S �0234 � NOT C9�4RE0 B�'EROS�ON COM7R0.r�T .._.�1 � .. ._ ._ __ �� ,_,- � qEE�t lOTTOI-� � YA7ERIµ9i�LL BE COKRED BY YIN. . . . ___ . .--_,- __"- Cl.70 ROCI(IT1P).ROCX 9iALL E%1EN0 `` _ - . -- o , � ..�. • '-_ ,• ��•, • UP T(1�911Mf iYll�'NEIGNi AND NIDM �' ` � .� �I �• .• L Q I V �FiM1e,,,,,��,,,� 1 + i�`` ��y Remove trees � ,}� �� Prolect exist � � � �� " 7'YINIYUY COKR(rw)s��u COnnec� fo exi5� `` - 2 EA `�� ., � ' , ec carv.cho�•mc�•mnK MH No. 1 ��V : �� , � �� p anters � � _ Mn«�uy�n a wcEK cnossHC � �a` �� I i � Moh: �r�css n��w�'cace �•� � � 7� � � eouuica w ae��uc�ro oo a e-soo '` � �,? j I ,�(� 1��p� � 'i o . �— - I+Ew RPEL�ME� vroE BEOdNC AS SPEME�� , . '�r -� . . . ••�• . � I �'�-,� , �� // \ � � e e.O�S p o� •� � o� + i Y ap e • o• e t o NOTF� �0 1oe�•op q � �� o•, q � .o•.��o r '�o•. •ab8� 1. Contiactor shall submit on erosion contro/plan prior to ony work. 2. Silf /ence sholl surround the enti�e perimiter of fhe project fo ovoid dirt ond deb�is lrom N Finished grode /, infiltrating the creek, o �� 3. AI! domoge !o shrubery on prirofe property sha!! be restored ot the cont�octor�s expense. _� �seresr Sowcut CREEK CROSSING unffied 4. Disturbed o�eas o/ wetlond shoq be restored os in occordv.^.ca wifh the permit. �"� O r ny RESTORATION V � a� °D �'ry n � `O:, u Topsoil w os DRAWINC N0.270-SA . - . -o ___.. ..______. -. . .. ._ _ _� t.k E-, . d7�BClCd 8�nof's J iu w..cr■ .r.��. 2 .��u� O � �� C I � j NOZi1M1: $01/� �1'� Z� �q _— +�__ _. . . _- _'____ . i .G"-.. . ._�L-=:.... t p �p� Und;sturbed � °� �� '' p� • r�encn woN °�u� �� " a i a h� _� �• + v . � 3 o V �Ex�s. ground W Trench - � �—--- � - �T� �� width _ r � � S..o A� A - � i�. 19� — - 117 LF 8� �� _ ._ -- � h 4�0 t' -o� — 5=0.0234 �c�� Bentonife Plug 6" Min bedding �.�-4 Y below outstide o/ •�06 6",wa �� ^�Z� pipe belf 3/4" - 0" r�c�� Z o� c�ushed oggregole �o = Bentonite Plu4 q�n,� a o°, � a•' �, o+c+ri \ N .-.. 1� - --R UD�__- —--- - . . . . . _._ .0.II . _ "1. n �.c m wo -�, �"_.-- Pipe 8edding � c.c o 1"=5' V W W Trench /oundation '��r��'' � W W w � =�p•H stobilirot;on os �� re quired 1. Joinfs to be tocked ond sonded. 6 - — -- -- - - � 2. Sowcut sholl be tock cooted wilh bitiuminus � � '� � ospho/t emulsion. Notive Soil �C��N A-A �' q a N 3. Surlocing sho/l motch mote�iol os stoted in the typicol sections. 10+0° "+0° TRENCH EXCAVATION OAiE RENSION N0. BY ' - ----- -- CITY OF TIGARD SHEET oE��EO BY: R� �+°,��. 110 T H A V E N U E �, _ --_ _ — —--- --- - -- ENqNEERING DEPARTMENT ORAWN BY: KMA 13125 $.W. HALL BLVD. - a+EacEO Br: vrn oueoN TIGARO, OREGON 97223 - - � .,M,s� � SANITARY SEWER REALIGNM _ — o�1E: xx-xx-xx �p T No� .,� FpX E� 033 684-297 - - ---- OF . ' sc�e: �s sr+owra m@ �� _,,_, - � yyyy�y.�i.ncnRO.oR.us PLAN d, PROFILE � --- -- - - 0 FILE lOCA71pN;N:\ENC\2002-03\DERRYDELL\9iE.DYMG PROJECT N0. 434