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SLR1995-00013 SLR95 00013 DURHAM BRIDGE 4' CITY OF TIGARD OREGON CITY OF TIGARD Washington County, Oregon NOTICE OF FINAL ORDER <=> BY THE HEARINGS OFFICER Concerning Case Number(s): SLR 95-0013 Name of Owner: Oregon Department of Transportation Name of Applicant: W&H Pacific Address of Applicant: 8405 SW Nimbus Avenue City:Tigard State:Oregon Zip: 97223 Address of Property: SW Durham Road crossing of Fanno Creek City:Tigard_ State:Oregon Zip: 97223 Request > A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Zone: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. Action > ❑ Approval as requested © Approval with conditions ❑ Denial Notice: Notice was published in the newspaper, posted at City Hall and mailed to: © Owners of record within the required distance © Affected governmental agencies The affected Citizen Involvement Team Facilitator ©The applicant and owner(s) THE DECISION SHALL BE FINAL ON OCTOBER 12, 1995 UNLESS AN APPEAL IS FILED Final Decision The adopted findings of fact, decision and statement of conditions can be obtained from the City of Tigard Planning Department, Tigard City Hall, 13125 SW Hall Boulevard, Tigard, Oregon 97223. Appeal: Any party to the decision may appeal this decision in accordance with 18.32.290 (B) and Section 18.32.370, which provides that a written appeal may be filed within ten (10) days after notice is given and sent. The appeal may be submitted on City forms and must be accompanied by the appeal fee(s) of S315.00 plus transcript costs, not in excess of 5500.00. THE DEADLINE FOR FILING OF AN APPEAL IS 3:30 P.M. ON OCTOBER 12, 1995 Questions: If you have any questions, please call the City of Tigard Planning Department at (503) 639-4171. BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD. OREGON Regarding an application by the City of Tigard for a ) FINAL ORDER sensitive lands review to alter land in a 1(X)-year tloodplain ) to replace the Durham Road brige over Fanno Creek ) SLR 95-0013 in the City of Tigard, Oregon ) (Durham Road Bridge) I. FINDINGS ABOUT SITE. SURROUNDINGS AND PUBLIC FACILITIES The hearings officer incorporates by reference the findings about the site and surroundings in Sections I and II of the City of Tigard Staff Report (the "Staff Report") and the agency comments in Section IV of the Staff Report. II. APPLICABLE APPROVAL STANDARDS AND RESPONSIVE FINDINGS The hearings officer incorporates by reference the approval standards and the findings in response to them in Section III of the Staff Report. III. HEARING AND RECORD 1. Hearings Officer Larry Epstein received testimony at the public hearing about this application on September 25, 1995. A record of that testimony is included herein as Exhibit A (Parties of Record), Exhibit B (Taped Proceedings), and Exhibit C (Written Testimony). These exhibits are tiled at the Tigard City Hall. 2. At the hearing • city planner Will D'Andrea summarized the Staff Report. William Evans appeared on behalf of the applicant and accepted the Staff Report without objections or corrections. No one else appeared in person or in writing. IV. SITE VISIT BY HEARINGS OFFICER The hearings officer visited the site and surrounding area. He observed the existing access to and structures, vegetation, and grades on the site and adjoining property and the condition of the adjoining streets. V. CONCLUSION AND DECISION 1. The hearings officer concludes that the proposed Sensitive Lands Review complies with the applicable criteria and standards of the Community Development Code. provided development that occurs after this decision complies with applicable local, state. and federal laws. 2. In recognition of the findings and conclusions contained herein. and incorporating the Staff Report and other reports of effect agencies and public testimony and exhibits received in this matter, the Hearings Officer hereby approves SLR 95-0}13, subject to the following conditions of approval: a. Before the city authorizes development permitted by this decision. the applicant shall: (1) Submit to the city a copy of the permit issued by the US Army Corps of Engineers and Oregon Division of State Lands for the development, or evidence that such permits are not required by those agencies: and He:n-:n:rs O cer Find:Order SLR ',U.....)013 'Durham Road 3ridee) P_we : (2) Submit to the city engineering division an erosion control plan consistent with Unified Sewera_te Agency R & U 91-47 and receive approval of that plan. b. Before the applicant removes trees with a diameter of more than 6 inches. the applicant shall submit to the city an application for a tree removal permit and shall receive approval of that application. DATE this 29th day of September. 1995. .!7-/j f. . ---------__, Larry Epsxein. . ICV City of T' and ' ea/r'inn s Officer V Hearings Officer Final Order SLR ?5-0013 4 Durham Road Bridge, Page' BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD, OREGON Regarding an application by the City of Tigard STAFF REPORT to construct a bridge over Fanno, located on SW SLR 95-0013 Durham Road. This development is within the 100-year floodplain. I. SUNitii IARY OF THE REQUEST CASE: Sensitive Lands Review SLR 95-0013 SUMMARY: A request for Sensitive Lands Review to construct a bridge over Fanno Creek, located on SW Durham Road. The bridge is located within the 100-year floodplain. APPLICANTS: W&H Pacific OWNER: Oregon Department of Transportation 8415 SW Nimbus Ave. 123 NW Flanders Beaverton, OR 97280 Portland, OR 97280 COMPREHENSIVE PLAN DESIGNATION: I-L (Light Industrial) ZONING DESIGNATION: I-P (Industrial Park) LOCATION: SW Durham Road crossing of Fanno Creek. East of SW 76th Avenue and west of SW 74th Avenue. APPLICABLE LAW: Community Development Code Chapter 18.84. Comprehensive Plan Policies 2.1.1, 3.1.1. 3.2.1. 3.2.2. 3.5.4. 4.2.1 STAFF RECONLMENDATION: Approval with Conditions. II. SITE AND VICINITY INFORMATION A. Background Information: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE ! ODOT Pagel No other development applications have been tiled with the City of Tigard. B. - • '•u,, ••• ,• • •..• . ) I•. ••I• The area of the proposed work is east of the intersection of SW Durham Road and SW 76th Avenue and west of the intersection of SW Durham Road and SW 74th Avenue. The proposed work is on both sides of the bridge within the SW Durham Road right- of-way. No structures are located in the area with exception of the existing bridge and roadway. The applicant proposes to remove the existing bridge and replace it with a new 100- foot clear span structure. The bridge construction includes removal and fill within a tloodplain and placement of riprap for slope protection. The proposal requires a sensitive lands permit as construction will take place within the 100-year floodplain of Fanno Creek. C. Vicinity Information: The adjacent properties to the northwest are zoned R-12 (Residential, 12 units per acre), property to the northeast, south, and west are zoned I-P (Industrial Park). The surrounding area is developed with a mix of residential and industrial uses. III. APPLICABLE APPROVAL STANDARDS AND REQUEST EVALUATION A. COMMUNITY DEVELOPMENT CODE: Chapter 18.84 conrnins regulations for lands within 100-year tloodplains that are subject to Sensitive Lands Review. Sensitive Lands Review of proposed developments in these areas is intended to implement tloodplain protection measures and to protect rivers, streams and creeks by minimizing erosion, promoting bank stability, maintaining and enhancing water quality and fish and wildlife habitat, and preserving scenic quality and recreational potential. Section 18.84.015(E) requires Hearings Officer approval for a Sensitive Lands Permit within the 100-year tloodplain. Chapter 18.8-t.040(A) states that the appropriate approval authority shall approve or approve with conditions an application request within the 100-year tloodplain in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE ' ODOT Paget • subsections 18.34.015W) and (E) 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 floodivav 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. The applicant has submitted a Certification of a "No-Rise" Determination for a proposed tloodway development in conformance with the requirements of the Federal Emergency Management Agency. The appendix of the Certification tabulates the results of the applicant's hydraulic analysis showing maintenance of the zero-foot rise tloodway . Approximately 600 cubic yards of material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the tloodway. 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 18.42 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards. The Comprehensive Plan designation for this parcel is I-L (Light Industrial). 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. The applicant's hydraulic analysis indicates maintenance of the zero-foot rise tloodway. 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 or said pathway is deemed by the Hearing Officer as untimely. The bridge will HE.-kRLNGS OFFICER - SLR 95-0013 - DURI-L- M BRIDGE .' ODOT Page3 incorporate two shoulders suitable for bicycle traffic. SW Durham Road is not designated as a proposed pedestrian/bicycle path as contained in the Tigard Parks Master Plan. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood. This proposal does not contain a plan for a pathway. The bikepath on the bridge will be above the elevation of the average annual flood. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board. Division of State Lands approvals shall be obtained. The applicant has states that a joint till permit application for the Army Corps of Engineers and Division of State Lands is being processed. The applicant shall provide the City of Tigard a copy of that approved permit. 7. Where land form alterations and/or development are allowed within and adjacent to the 100 year floodplain, the City shall require the dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This proposal is on public right-of-way and does not contain property which could be be dedicated for pathway purposes. Chapter 18.84.040(C) states that the Director shall approve or approve with conditions an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria has been satisfied: 1. 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. The disturbance is the minimum disturbance necessary to accomodate the bridge replacement. The replacement will increase the conveyance of the tloodway along this section of the creek. ?. The proposed land form alteration or development will not result in erosion, stream sedimentation, ground instability, or other adverse on- site and orb"--site effects or hazards to life or property. During construction. erosion and sediment control will be applied in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page4 accordance with Unified Sewerage Agency requirements. SIopes steeper than 2:1 will be stabilized with riprap. Construction will require an erosion control plan, approved by the Engineering Department, in conformance with Unified Sewerage Agency Resolution and Order 91-47. 3. The water flow capacity of the drainageway is not decreased. The hydraulic analysis concluded that the capacity of the drainageway, as well as the flooplain will not be decreased or negatively impacted. 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 18.100, Landscaping and Screening. The minimal amount of vegetation loss expected with construction will be replanted. Erosion control measures shall also be taken during construction. The applicants construction plans shall be reviewed and approved by the Engineering Department. 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. This requirement is not applicable as the drainageway will not be impaired by the bridge's construction. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. As discussed in the previous section. permits have been applied for and a copy of the permits will be sent to the City. 7. Where landform alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. As discussed in the previous section. dedication is not required. HEARLNGS OFFICER - SLR 95-0013 - DURHAM BRIDGE ! ODOT PageS Sensitive Lands: Section 18.84.040(B) states that the Director shall approve an application for sensitive lands permit on slopes of 25% or greater based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land use form alteration or development will not create site disturbances to an extent greater than that required for the use. As discussed in the previous section, the development is the minimum disturbance necessary. ?. 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. This project does not change on-site or off-site drainage. As discussed in the previous section. erosion control measures will be taken in accordance with U.S.A. standards. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table, high shrink-swell capability; compressible/organic; and shallow depth-to-bedrock. The bridge is a 100 foot clear span design with two bents, one at each end, supported by pilings. The bridge span is supported at the top of the bank and will therefore be structurally stable. The banks of the creek shall be stabilized with riprap. 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 13.100, Landscaping and Screening. As previously discussed. the minimal amount of vegetation loss expected with construction will be reveeetated. Erosion control measures shall also be taken during construction. Chapter 18.84.040(D) states that the Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon findings that all of the following criteria have been satisfied: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page6 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland. The site is within a wetland area but it is not designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map, nor is it within 25 feet of such a wetland. 2. The extent and nature of the proposed landform alteration or development will not create site disturbances to an extent greater than the minimum required for the use. The disturbance is the minimum disturbance necessary to accomodate the bridge at the top of the bank. The area of work is on the creek banks. 3. Any encroachment or change in on-site or off-site drainage which would adversely impact wetland characteristics have been mitigated. This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. 5. All other sensitive lands requirements of this chapter have been met. Other sensitive lands requirements have been met as addressed in this report. 6. The provisions of Chapter 118.150, Tree Removal, shall be met. The applicant has not provide information regarding the presence or removal of trees. The applicant shall apply for a tree removal permit for removal of trees greater than 6 inches in diameter. 7. Physical Limitations and Natural Hazards, Floodplains and Wetlands, Natural■ Areas. and Parks, Recreation and Open Space policies of the HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel Comprehensive Plan have been satisfied. Applicable Comprehensive Plan Policies are satisfied as discussed, in Section B Comprehensive Plan Policies, below. B. COMPREHENSIVE PLAN POLICIES. 1. Policy 2.1.1 provides the City will assure that citizens will be provided an opportunity to participate in all phases of the planning and development review process. Policy 2.1.1 is satisfied because the applicant held a neighborhood meeting, notice of the application and public hearing on this item was provided to owners of property in the vicinity of the sire and in a newspaper of general circulation. 2. Policy 3.1.1 provides that the City shall not allow development in areas meeting the definition of wetlands under chapter 18.26 or areas having slopes in excess of 25% except where it can be shown that established and proven engineering techniques related to a specific site plan will make the area suitable for the proposed development. (Note: This policy does not apply to lands designated as significant wetlands on the floodplain and wetlands map.) Policy 3.1.1 is satisfied because engineering techniques will make the site suitable for the proposed bridge and the applicable approval criteria for development in wetland areas have been satisfied. 3. Policy 3.2.1 provides that the City will prohibit any development within the 100-year floodplain that would result in any rise in elevation of the 100-year floodplain. Policy 3.2.1 is satisfied because this proposal will not result in any rise in the elevation of the 100-year flooplain. 4. Policy 3.2.2 provides that the City shall prohibit development in the floodway, except if the alteration preserves or enhances the ficnction and maintenance of the zero foot rise floodway. Policy 3.2.2 is satisfied because this development will preserve the function and maintenance of the zero-foot rise floodway. Polio-y 3.5.4 provides that the City provide an interconnected pedestrianibikepath throughout the City. Policy 3.5.4 is satisfied because this bridge will accommodate a pedestrian/bikeway system. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT PageS 6. Policy 4.2.1 provides that all development within the Tigard Urban Planning Area shall comply with applicable federal. state and regional water quality standards. Policy 4.2.1 shall be satisified as construction shall comply with • erosion control measures for the Tualatin River Basin. IV. AGENCY COMMENTS 1. The City of Tigard Engineering Department has reviewed the proposal and has provided the following comments: The CDC at 18.84.04A1,3 requires that the fill and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero- rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood". Moreover, the City's Master Drainage Plan recommends that "the existing zero-rise tloodway...should be used along this reach to ensure an adequate flow area for the 100-year flood". The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway. ?. The City of Tigard Public Works Department. Building Division. Tigard Police Department. and Washington County Department of Land Use and Transportation have reviewed this proposal and have no objections to this proposal. 3. The Unified Sewerage Agency states that Fanno Creek is floodplain / floodway designated. Berm over waterline could cause violation of R&O 91-47/91-75, Chapter 6 sections 6.06 & 6.07. 4. GTE states that GTE has established work order 5460-7F001BP for the removal, temporary relocation and replacement of the telephone facilities across Fanno Creek on Durham Road. Please contact Jim Wieskamp. Senior Engineer-OSP. (620-5943) if you have any questions concerning the project. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page9 5.. No additional comments have been recieved. VI. CONCLUSION AND RECOMLMENDATION Staff concludes that the proposed impacts to Sensitive Lands Areas comply with the applicable approval criteria for issuance of a Sensitive Lands Permit. Staff recommends the approval of SLR 95-0013 subject to the following conditions: 1. Copy of the joint till permit application for the Army Corps of Engineers and Division of State Lands. 2. Tree removal permit for trees greater than 6 inches in diameter. 3. An erosion control plan shall be provided and reviewed by the Engineering Department. The plan shall conform with Unified Sewerage Agency R&O 9147. THIS APPROVAL SHALL BE VALID FOR EIGHTEEN MONTHS OF THE E}H CTIVE DATE OF THIS DECISION. Prepared by: G%"+ ,Daid6p. William D'Andrea Date Assistant Planner Approved by: Dick Bewersdorff Date Senior Planner HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page10 rn13 Zo=*- ►aa=o'c/% cry os,►s Zo-,' FndPone%� lEndPcnel 1 / .� o di ti cuss 100 Mpg" Sid 20.-4'Bridge End Panel. fa End �••• sr • •`��a .. sr sr Sec Owg Na 43422 �) • • • • • /•S D vimi. ___r T, - � y MFG. f+ are• . — v `W N.•S W 01R'►MI ROAD — N r, 2�[ine _ ~ A/ _ NS7G1D21Z'W v ;. � tit 57758.31:W .� so�' I 'E[ 13960 'El. /3805 I FA . r r _1 r: Al AK 4 Ire• a S. f , . ••• It CIV II I • E / rrly &Mips c>) C 8 W # 'ElShows lions Shows Are Finish • M Grade fop of ACWS l w 0 PLAN l. r-z 1 R 1 CITY O TIGARD PLANNING DEPT. .4 : 1 i i' ` Bonito I ■ J Rd. ' . .3 til li T -.i cc o c° die a `� � vG$. Lu Ounccrrm Rd. / Z(..0 i�! i 4,0"- I z PROJECT yes Q gc° ¢a' --! a. 0 i 5qi ,zi , - ct? „,‘ .4/.. _-- cv .ocie9 v 0 s; ei‘o. ci; (5 SEC.12, T.2S., R.1 W., W.M. L. LOCATION MAP NO SC. }' 1 f-- U1 I 1 I j VICINITY A 1 CASE NO. H SLR 95-0013 DURHAM BRIDGE EXHIBIT MAP 7 (Fenno Cry). I1 1 V V ! AGENDA ITEM ND.: 2.1 BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD, OREGON Regarding an application by the City of Tigard STAFF REPORT to construct a bridge over Fanno, located on SW SLR 95-0013 Durham Road. This development is within the 100-year floodplain. I. SUMMARY OF THE REQUEST CASE: Sensitive Lands Review SLR 95-0013 SUMMARY: A request for Sensitive Lands Review to construct a bridge over Fanno Creek, located on SW Durham Road. The bridge is located within the 100-year floodplain. APPLICANTS: W&H Pacific OWNER: Oregon Department of Transportation 8415 SW Nimbus Ave. 123 NW Flanders Beaverton, OR 97280 Portland, OR 97280 COMPREHENSIVE PLAN DESIGNATION: I-L (Light Industrial) ZONING DESIGNATION: I-P (Industrial Park) LOCATION: SW Durham Road crossing of Fanno Creek. East of SW 76th Avenue and west of SW 74th Avenue. APPLICABLE LAW: Community Development Code Chapter 18.84. Comprehensive Plan Policies 2.1.1, 3.1.1, 3.2.1, 3.2.2, 3.5.4, 4.2.1 STAFF RECOMMENDATION: Approval with Conditions. II. SITE AND VICINITY INFORMATION A. Background Information: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel No other development applications have been filed with the City of Tigard. B. Site Information and Proposal Description: The area of the proposed work is east of the intersection of SW Durham Road and SW 76th Avenue and west of the intersection of SW Durham Road and SW 74th Avenue. The proposed work is on both sides of the bridge within the SW Durham Road right- of-way. No structures are located in the area with exception of the existing bridge and roadway. The applicant proposes to remove the existing bridge and replace it with a new 100- foot clear span structure. The bridge construction includes removal and fill within a floodplain and placement of riprap for slope protection. The proposal requires a sensitive lands permit as construction will take place within the 100-year floodplain of Fanno Creek. C. Vicinity Information: The adjacent properties to the northwest are zoned R-12 (Residential, 12 units per acre), property to the northeast, south, and west are zoned I-P (Industrial Park). The surrounding area is developed with a mix of residential and industrial uses. III. APPLICABLE APPROVAL STANDARDS AND REQUEST EVALUATION A. COMMUNITY DEVELOPMENT CODE: Chapter 18.84 contains regulations for lands within 100-year floodplains that are subject to Sensitive Lands Review. Sensitive Lands Review of proposed developments in these areas is intended to implement floodplain protection measures and to protect rivers, streams and creeks by minimizing erosion, promoting bank stability, maintaining and enhancing water quality and fish and wildlife habitat, and preserving scenic quality and recreational potential. Section 18.84.015(E) requires Hearings Officer approval for a Sensitive Lands Permit within the 100-year floodplain. Chapter 18.84.040(A) states that the appropriate approval authority shall approve or approve with conditions an application request within the 100-year floodplain in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page2 subsections 18.84.015(B) and (E) 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. The applicant has submitted a Certification of a "No-Rise" Determination for a proposed floodway development in conformance with the requirements of the Federal Emergency Management Agency. The appendix of the Certification tabulates the results of the applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway . Approximately 600 cubic yards of material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the floodway. 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 18.42 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards. The Comprehensive Plan designation for this parcel is I-L (Light Industrial). 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. The applicant's hydraulic analysis indicates maintenance of the zero-foot rise floodway. 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 Hearing Officer as untimely. The bridge will HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page3 , incorporate two shoulders suitable for bicycle traffic. SW Durham Road is not designated as a proposed pedestrian/bicycle path as contained in the Tigard Parks Master Plan. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood. This proposal does not contain a plan for a pathway. The bikepath on the bridge will be above the elevation of the average annual flood. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. The applicant has states that a joint till permit application for the Army Corps of Engineers and Division of State Lands is being processed. The applicant shall provide the City of Tigard a copy of that approved permit. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This proposal is on public right-of-way and does not contain property which could be be dedicated for pathway purposes. Chapter 18.84.040(C) states that the Director shall approve or approve with conditions an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria has been satisfied: 1. 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. The disturbance is the minimum disturbance necessary to accomodate the bridge replacement. The replacement will increase the conveyance of the floodway along this section of the creek. 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. During construction, erosion and sediment control will be applied in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page4 accordance with Unified Sewerage Agency requirements. Slopes steeper than 2:1 will be stabilized with riprap. Construction will require an erosion control plan, approved by the Engineering Department, in conformance with Unified Sewerage Agency Resolution and Order 91-47. 3. The water flow capacity of the drainageway is not decreased. The hydraulic analysis concluded that the capacity of the drainageway, as well as the flooplain will not be decreased or negatively impacted. 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 18.100, Landscaping and Screening. The minimal amount of vegetation loss expected with construction will be replanted. Erosion control measures shall also be taken during construction. The applicants construction plans shall be reviewed and approved by the Engineering Department. 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. This requirement is not applicable as the drainageway will not be impaired by the bridge's construction. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. As discussed in the previous section, permits have been applied for and a copy of the permits will be sent to the City. 7. Where landform alterations and/or development are allowed within and adjacent to the 100 year floodplain, the City shall require the 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. As discussed in the previous section, dedication is not required. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pages Sensitive Lands: Section 18.84.040(B) states that the Director shall approve an application for sensitive lands permit on slopes of 25% or greater based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land use form alteration or development will not create site disturbances to an extent greater than that required for the use. As discussed in the previous section, the development is the minimum disturbance necessary. 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. This project does not change on-site or off-site drainage. As discussed in the previous section, erosion control measures will be taken in accordance with U.S.A. standards. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table; high shrink-swell capability; compressible/organic; and shallow depth-to-bedrock. The bridge is a 100 foot clear span design with two bents, one at each end, supported by pilings. The bridge span is supported at the top of the bank and will therefore be structurally stable. The banks of the creek shall be stabilized with riprap. 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 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. Chapter 18.84.040(D) states that the Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon fmdings that all of the following criteria have been satisfied: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page6 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland. The site is within a wetland area but it is not designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map, nor is it within 25 feet of such a wetland. 2. The extent and nature of the proposed landform alteration or development will not create site disturbances to an extent greater than the minimum required for the use. The disturbance is the minimum disturbance necessary to accomodate the bridge at the top of the bank. The area of work is on the creek banks. 3. Any encroachment or change in on-site or off site drainage which would adversely impact wetland characteristics have been mitigated. This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. 5. All other sensitive lands requirements of this chapter have been met. Other sensitive lands requirements have been met as addressed in this report. 6. The provisions of Chapter 118.150, Tree Removal, shall be met. The applicant has not provide information regarding the presence or removal of trees. The applicant shall apply for a tree removal permit for removal of trees greater than 6 inches in diameter. 7. Physical Limitations and Natural Hazards, Floodplains and Wetlands, Natural Areas, and Parks, Recreation and Open Space policies of the HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel Comprehensive Plan have been satisfied. Applicable Comprehensive Plan Policies are satisfied as discussed, in Section B Comprehensive Plan Policies, below. B. COMPREHENSIVE PLAN POLICIES. 1. Policy 2.1.1 provides the City will assure that citizens will be provided an opportunity to participate in all phases of the planning and development review process. Policy 2.1.1 is satisfied because the applicant held a neighborhood meeting, notice of the application and public hearing on this item was provided to owners of property in the vicinity of the site and in a newspaper of general circulation. 2. Policy 3.1.1 provides that the City shall not allow development in areas meeting the definition of wetlands under chapter 18.26 or areas having slopes in excess of 25% except where it can be shown that established and proven engineering techniques related to a specific site plan will make the area suitable for the proposed development. (Note: This policy does not apply to lands designated as significant wetlands on the floodplain and wetlands map.) Policy 3.1.1 is satisfied because engineering techniques will make the site suitable for the proposed bridge and the applicable approval criteria for development in wetland areas have been satisfied. 3. Policy 3.2.1 provides that the City will prohibit any development within the 100-year floodplain that would result in any rise in elevation of the 100-year floodplain. Policy 3.2.1 is satisfied because this proposal will not result in any rise in the elevation of the 100-year flooplain. 4. Policy 3.2.2 provides that the City shall prohibit development in the floodway, except if the alteration preserves or enhances the function and maintenance of the zero foot rise floodway. Policy 3.2.2 is satisfied because this development will preserve the function and maintenance of the zero-foot rise floodway. 5. Policy 3.5.4 provides that the City provide an interconnected pedestrian/bikepath throughout the City. Policy 3.5.4 is satisfied because this bridge will accommodate a pedestrian/bikeway system. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page8 6. Policy 4.2.1 provides that all development within the Tigard Urban Planning Area shall comply with applicable federal, state and regional water quality standards. Policy 4.2.1 shall be satisified as construction shall comply with erosion control measures for the Tualatin River Basin. IV. AGENCY COMMENTS 1. The City of Tigard Engineering Department has reviewed the proposal and has provided the following comments: The CDC at 18.84.04A1,3 requires that the fill and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero- rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood". Moreover, the City's Master Drainage Plan recommends that "the existing zero-rise floodway...should be used along this reach to ensure an adequate flow area for the 100-year flood". The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway. 2. The City of Tigard Public Works Department, Building Division, Tigard Police Department, and Washington County Department of Land Use and Transportation have reviewed this proposal and have no objections to this proposal. 3. The Unified Sewerage Agency states that Fanno Creek is floodplain / floodway designated. Berm over waterline could cause violation of R&O 91-47/91-75, Chapter 6 sections 6.06 & 6.07. 4. GTE states that GTE has established work order 5460-7F001BP for the removal, temporary relocation and replacement of the telephone facilities across Fanno Creek on Durham Road. Please contact Jim Wieskamp. Senior Engineer-OSP, (620-5943) if you have any questions concerning the project. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page9 5.. No additional comments have been recieved. VI. CONCLUSION AND RECOMMENDATION Staff concludes that the proposed impacts to Sensitive Lands Areas comply with the applicable approval criteria for issuance of a Sensitive Lands Permit. Staff recommends the approval of SLR 95-0013 subject to the following conditions: 1. Copy of the joint fill permit application for the Army Corps of Engineers and Division of State Lands. 2. Tree removal permit for trees greater than 6 inches in diameter. 3. An erosion control plan shall be provided and reviewed by the Engineering Department. The plan shall conform with Unified Sewerage Agency R&O 91-47. THIS APPROVAL SHALL BE VALID FOR EIGHTEEN MONTHS OF THE EF'F'ECTIVE DATE OF THIS DECISION. Prepared by: 's William D'Andrea Date Assistant Planner Approved by: Dick Bewersdorff Date Senior Planner HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel() a • CITY OF TIGARD, OREGON SENSITIVE LANDS APPLICATION CITY OF TIGARD, 13125 SW Hall, PO Box 23397 Tigard, Oregon 97223 - (503) 639-4171 FOR STAFF USE ONLY CASE NO. I OTHER CASE NO'S: RECEIPT NO. APPLICATION ACCEPTED BY: DATE: 1. GENERAL INFORMATION I Application elements submitted: PROPERTY ADDRESS/LOCATION Durham Road at Fanno Creek I (A) Application form (1) crossing (B) Owner's signature/written TAI MAP AND TAX LOT NO. I authorization (C) Title transfer instrument (1) SITE SIZE N/A (D) Assessor's map (1) Jr'ERTY OWNER/DEED HOLDER* ODOT I (E) Plot plan (pre-app checklist) ADDRESS 123 NW Flanders PHONE 731-8200 I (F) Applicant's statement Portland, Oregon 97209-4037 CITY ZIP I (pre-app checklist) APPLICANT* W&H Pacific, Inc. I (G) List of property owners and ADDRESS 8405 S.W. Nimbus Ave. PHONE 626-0455 I addresses within 250 feet (1) CITY Beaverton, Oregon ZIP 97280 (H) Filing fee ($520) *When the owner and the applicant are different people, the applicant must be the purchaser of record or'a leasee in possession with written authorization DATE DETERMINED TO BE COMPLETE: from the owner or an agent of the owner with written authorization. The owner(s) must sign this application in the space provided on page two or FINAL DECISION DEADLINE: submit a written authorization with this application. COMP. PLAN/ZONE DESIGNATION: 2. PROPOSAL SUMMARY The owners of record of the subject property request a Sensitive Lands Permit to allow Widening of Durham Road, N.P.O. Number: Removal of existing Fanno Creek Bridge, Approval Date: Construction of new bridge. 1 Final Approval Date: Planning • 0523P/13P Engineering Rev'd: 3/88 I PACIFIC DURHAM SENSITIVE LANDS MEETING ATTENDEE'S: Ralph Dundee 7910 S.W. Durham Rd. 639-1057 Jack Birtham 15525 S.W. 109th 684-1362 M. M. Goble 8025 S.W. Durham 639-5849 Sheri Wartland 234 Cervantes 635-8588 Ed Catter 8065 S.W. Durham Rd. 639-2407 Mrs. Goble Carl H. Johnson 8965 S.W. Burnhaust 639-5263 Bill Ihly Washington County Jim Evans W&H Pacific HELD: Public meeting for Tigard Sensitive Lands Permit July 31, 1995 at 7pm at Tigard High School. The meting was a requirement by the City of Tigard. The meeting was attended by seven citizens of the area. Opened the meeting with an overview of the purpose of the meeting (to discuss the plans for the bridge/Fanno Creek area) and a short history of the project and its funding. Jim Evans as Project Manager for the engineering consultant,W&H Pacific. Jim explained the planned improvements from hall to Upper Boones Ferry in general. He then explained, in detail, the planned improvements at the bridge and Fanno Creek area including the plantings in the floodplain mitigation area. There were no objections raised to the planned improvements for the sensitive lands area. The main questions concerned the timing of the project (i.e. how soon would we start and how long will the project take?). NI - AFFIDAVIT OF MAILING STATE OF OREGON ) SS CITY OF TIGARD ) 1, Fes" (Z31V1S , being duly sworn, depose and say that on 4-Was. \JUOr- oide • 19 415—, I caused to have mailed to each of the persons on the attached fist a notice of a meeting to di:scuxzs a proposed development at 1:ek-Nia1 C Z C ITLoNL, i)02,4, 12e4-D , a copy of which notice so mailed'is attached hereto and made a part of hereof. I further state that said notices were enclosed in envelopes plainly addressed to said persons and were deposited on the date indicated above in the United States Post Office at 139lk) , with postage prepaid thereon. ' - L,-:-----_ Sign-- - Subscribed and swam to befcre me this 14\--f`\--f day of J ( , 79 95 ki..06,^ 6.1 !4~, SEAL r Notary Public 1 ?(,,F-11 SUSAN M MILLER Ar Q h NOTARYPU9UC-OREGON Y, My Commission Expires: l ( f -•'� COMMISSION NO. 036419 4 MY COMMISSION EXPIRES JULY 19, 1998 L- .����-.� -`�� -''c '''.'fa h:\Icsin Jo\atmail.ct July 13, 1995 Sample BURLINGTON NORTHERN RAILROAD 999 3RD AVENUE, #2000 SEATTLE, WA 98104 Re: Fanno Creek Bridge along Durham Road Washington County is representing the Oregon Department of Transportation (ODOT) along Durham Road at Fanno Creek. The county and ODOT are proposing a sensitive lands application for the replacement and construction of a new bridge at this location. Prior to applying to the City of Tigard for the necessary permits, we would like to discuss the proposal in more detail with the surrounding property owners and residents. You are invited to attend a meeting on: Monday, July, 31, 1995 Tigard High School Cafeteria 9000 SW Durham Road 7:00 pm Please notice this will be an informational meeting to discuss this proposal and to provide a final overview and update on the project schedule for construction. We look forward to more specifically discussing the proposal with you. Please call me at 693- 4461, if you have any questions. Bill Ihly Project Coordinator, Washington County B & R Investments ATTN: VaLeria & James Addington ATTN: Gordon/Melissa Barrett 8465 SW Durham Rd 16255 SW Upper Boones Ferry Rd 15987 SW 81st Ct Tigard, OR 97224 Tigard, OR 97224 Tigard, OR 97223 ATTN: Judith A. Benjamin ATTN: Jack Biethan ATTN: Richard/Teresa Bowen 15695 SW 81st Ct 15525 SW 109th Ave 8175 SW Durham Rd Tigard, OR 97223 Tigard, OR 97224 Tigard, OR 97224 Burlington Northern RR ATTN: David & Daniel Case ATTN: James & Audrey Castile 999 3rd Ave #2000 4630 SW 39th 8100 SW Durham Rd Seattle, WA 98104 Portland, OR 97221 Tigard, OR 97224 ATTN: Charles & Joyce Coiling ATTN: Edward & Viola Cotter ATTN: John & Janice Duncan 8385 SW Durham Rd 8065 SW Durham Rd 16055 SW 74th Ave Tigard, OR 97224 Tigard, OR 97223 Tigard, OR 97223 ATTN: Ralph & Mary Durkee ATTN: Marion & Bettie Goble ATTN: Michael & Linda Halseth 7910 SW Durham Rd 8025 SW Durham Rd 7975 SW Durham Rd Tigard, OR 97224 Tigard, OR 97223 Tigard, OR 97224 ATTN: Harold/Mildred Hambach ATTN: Craig Hopkins ATTN: Carl Johnson 7735 SW Durham Rd 7430 SW Varns St 200 James St #407 Tigard, OR 97224 Tigard, OR 97223 Edmonds, WA 98020 PGE ATTN: Werner & Inge Knebel ATTN: Mike Livingston ATTN: Lydia Lundberg 8335 SW Durham Rd 121 SW Salmon St 10355 SW Porter Tigard, OR 97224 Portland, OR 97204 Portland, OR 97225 Mt. Hood Chemical Corp ATTN: Mark Mahon ATTN: David & Dianne Metzger 11310 SW 91st ct PO Box 275 4444 NW Yeon Ave Tigard, OR 97223 Sherwood, OR 97140 Portland, OR 97210 ATTN: Michael Newberry ATTN: William Reed ATTN: Ernest & Rose Rivas 15954 SW 81st Ct 10355 SW Porter 2118 SE Main St Tigard, OR 97223 Portland, OR 97225 Portland, OR 97213 ATTN: Deborah Sayler ATTN: Dale Shoewe ATTN: Joel Stevens 15976 SW 81st Ct 7925 SW Durham Rd 9660 SW Ventura Ct Tigard, OR 97223 Tigard, OR 97224 Tigard, OR 97223 Tigard School Dst #82 Tigard School Dst. #23J ATTN: Mary Swinek 9915 SW Frewing #23 13137 SW Pacific Hwy 13137 SW Pacific Hwy Tigard, OR 97223 Tigard, OR 97223 Tigard, OR 97223 Unified Sewerage Agency ATTN: Pat Wyden ATTN: John Benneth 155 N 1st St 8122 SW Spruce st 1550 SW 109th AVe Hillsboro, OR 97124 Tigard, OR 97223 Tigard, OR 97224 SENSITIVE LANDS APPLICANTS STATEMENT Durham Road Improvements and Bridge Crossing of Fanno Creek May 26, 1995 The Durham Road project includes widening of Durham Road,the removal of the exiting bridge and the construction of a new 100-foot clear span structure. The Bridge construction includes removal and fill within a flood plain and placement of riprap for slope protection. 18.84.0404 Approval Standards A. The Hearings Officer shall approve or approve with conditions 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 narrowing of the floodway boundary; Approximately 600cy of fill material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the floodway. The hydraulic analysis "Durham Road Bridge Crossing of Fanno Creek" shows the maintenance of the zero-foot rise in the floodway. 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 of developments associated with community recreation uses, utilities, or public support facilities as defined in Chapter 18.42 of the Con.munity Development Code shall be allowed in areas designated residential subject to applicable zoning standards; This is a public support facility, and as such is allowed. 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; See Item 1 above. • 1 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 proposed improvements include a 5'bike land and 8' sidewalk on the new bridge section. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood; The proposed bridge he is above elevation 133.3. Thee 100-year floodplain is elevation 128.3, therefore, the pedestrian/bicycle pathway is above the average annual. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. A joint fill permit application for the U.S. Army Corps of Engineers and the State of Oregon Land Board, Division of State Lands is being processed. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. Floodplain area within the immediate vicinity of the Fanno Creek floodplain is to be dedicated public right-of-way. B. The Director shall approve or approve with conditions an application request for a sensitive lands permit on slopes of 25 percent or greater or unstable ground 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; The area of work is on the creek banks. The alteration is to accommodate the new bridge, provide riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 2. The proposed land form alteration or development will not result in erosion, 2 t J — stream sedimentation, ground instability,or other adverse on-site and off-site effects or hazards to life or property; During construction,erosion and sediment control will be applied in accordance with U.S.A. current standards. Riprap aprons will be provided under the bridge area above the normal high waterline. Slopes steeper than 2:1 will be stabilized with riprap. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table; high shrink-swell capability; compressible/organic; and shallow depth-to- bedrock; and The bridge is a 100-foot clear span design with two bents, one at each end, supported by pilings. Removal of the existing bridge and construction of the new clear span structure will improve stability and drainage. 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 18.100, Landscaping and Screening. The loss of vegetation will be minimized. See the planting and grading plan for revegetation. C. The Director shall approve or approve with conditions 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 the extent greater than that required for the use; The area of work is on the creek banks. The alteration is to accommodate the new bridge, provide riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 2. The proposed 'znd 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; During construction,erosion and sediment control will be applied in accordance with U.S.A. Riprap aprons will provide under the bridge area effects the normal high waterline. Slopes steeper than 2:1 will be stabilized with rip rap. 3 3. The water flow capacity of the drainageway is not decreased; The drainageway's flow capacity is not impaired by the bridge construction. Removal of the existing bridge and mitigating the floodway fill will remove obstructions within the floodplain and improve conveyance. 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 18.100, Landscaping and Screening; The loss of vegetation will be minimized. See the planting and grading plan for revegetation. 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 improvement is adequately sized to accommodate maximum flow. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained; and a joint fill permit application for the U.S. Army Corps of Engineers and the State of Oregon Land Board, Division of State Lands is being processed. 7. Where landform alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. (Ord. 90-29; Ord. 90-22; Ord. 89-06; Ord. 87-66; Ord. 87-32; Ord. 86-08; Ord. 84-29; Ord. 83-52) Floodplain area within the immediate vicinity of the Fanno Creek floodplain is to be dedicated public right-of-way. D. The Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon findings that all of the following criteria have been satisfied: 4 r 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland; This area is not designated as significant on the Comprehensive Plan. 2. The extent and nature of the proposed landform alteration development will not create site disturbances to an extent greater than the minimum required for the use; The area of work is on the creek banks. The alteration is to accommodate the new bridge, prove riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 3. Any encroachment or change in on-site and off-site drainage which would adversely impact wetland characteristics have been mitigated; This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening; The loss of vegetation will be minimized. See the planting and grading plan for revegetation. 5. All other sensitive lands requirements of this chapter have been met; This narrative responds to Section 18.84.40 Approval Standards in its entirety. 6. The provisions of Chapter 18.150, Tree Removal,shall be met. The area of disturbance can be considered developed residential land since no further development can occur in this area; therefore, this area is excluded from the Tree Removal Chapter. 7. Physical Limitations and Natural Hazards, Floodplains and Wetlands, Natural Areas, and Parks, Recreation and Open Space policies of the Comprehensive Plan have been satisfied. (Ord. 90-29; Ord. 89-06; Ord. 87-66; Ord. 87-32; O rd.83-52) 5 The project meets the intent of the Comprehensive Plan. I:\project\02041302\wpdata\dur-sens.wpd 6 II'!''��pl V(17..�l :� E E c ? u UL�UU Y , (Y� i 7)-qtz - ,- ..-----. 50.--:, : , , 1;1 6---'s--- .. i 1 , i g til a 0 _.,r1::; / 1 4.tli,yl-4,,,ci r i�rL pm F 6.,. l� 4 DURlfAY ,.. ��F____ vim. l,#1:1 .4110111--.,) ,1` ithVc1( 3 ......- A 1 .1 ..... I ..00,,,,,,,,o.,,/,,,,,,... „. -...--.../. c--- -,,,\s 4filiVe' t 0."hilli ii-,1., ' 11 1 .A5' -- 1 - rAirri fM° /8" a, ...,.... _ L - 1A7r'n ". 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P A C I F I C BRIDGE GRADING AND PLANTING PLAN FIGURE .At 0 mr "„ • BRAYERTON,OR g7008-7120 Durham Road - Fanno Creek Crossing 2 l'bem• (50,1,..1126..-04.5....5 .......‘,.r..L...: ($5.40)ra0-0775 l:1 - SW Hall Blvd. - SW Upper Boones Ferry Rd. —J l...........Ka-Pr.•1.••■•••••••..,1 warria•• Z: / / 10 CL 700 Rip—Rap Per Detail B, 2B-4 -----. Finish Grade 1 4j; IrAir I! -* f /(-4 )r I(--,..), 1 e--4.) )r-O n(-43( )<-4J( /(---*,.); 1/4, ) \--1 1/4...„) \ •/ 1/4...„) \--./ 1/4-) `--1 -7 1/4-.) \-•' 1/4 •.) \--/ 1/41 \ ' 1/4-) s-. •Nl.--1.'` , ; 1, ; , ) .....,. It ),,:-.11/ 1,-, )1 ),......ry l„.. 1( --- ---- -.. , , - --• 1 r ----1, In; k Conc. Embankment / \ Extg. 12- Water Main (By Others) SECTION "A A" (Existing Water Main Coverage) N.T.S. Extg. Ground 1.0% -5:1 Cut Slope ORDINARY HIGH WATER ELEV. 120 ------ --------Finish Grade SECTION "B—B" (Typical Fanno Creek Bank Grading) N.T.S. 7. Extg. Ground — 1----- . ---- Extg. Ground.-- .. , ,. ,.--- r--,. '4:...... \ I .----/ ‘ • •••-",- \ 1.5:1 1.5:1- // .,;i,w' __..--*-- mu' s:4- N. . 7 1 i.,,„ 1.0% i ELEV. 120' - (ORDINARY HIGH WATER) ; , ,..' .1 ;: ;:•••,::7it./71--- ,?.‘,... .t ,.., 4- d -------- z Lq CL 700 Rip—Rap ci ..- SECTION n C—C n N.T. S. > 11 PACIFIC BRIDGE GRADING PLAN DETAILS FIGURE MOS 6.W. RIAAlo.A V' BRAVIRTON.OR 9700a-7120 Durham Road - Fanno Creek Crossing 3 ci PAant:(501 OV .r:(10R)526-0775 La*,a.....c1.•••tornatalihr.... SW Hall Blvd. - SW Upper Boones Ferry Rd. ilH _ Lim : JOINT • o PERMIT APPLICATION FORM ci: � vwfr,��-�:�. US Army Corps 'Ni`�' ~""-• . THIS APPLICATION WILL MEET THE REQUIREMENTS OF BOTH AGENCIES "1: of Engineers•. Portland District • --- ' , =,AGENCIES WILL ASSIGN NUMBERS ;; Corps Action ID Number Oregon Division of State Lands Number SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENPP-PE-RP Division of State Lands P.O. Box 2946 775 Summer Street NE Portland, OR 97208-2946 Salem, OR 97310 503/326-7730 503/378-3805 ©Applicant Name Oregon Department of business# (503)986-3782 Transportation home phone# ATTN:Alan Lively FAX# (503)986-3749 and Address Room 200, Roadway Engineering Section Salem, OR 97310 O Co Applicant business phone# (503) 626-0455 home phone# x7266 ® Authorized Agent W&H Pacific Inc. FAX# (503) 526-0775 ATTN: Jim Evans O Contractor 8405 SW Nimbus Ave. Name and Address Beaverton, OR 97008-7120 Property Owner Oregon Dept. Jf Transportation business phone# (503) 986-3782 (if different than applicant) ATTN:Alan Lively home phone# Name and Address Room 20, Roadway Engineering FAX# (503) 986-3749 Section Salem, OR 97310 OO PROJECT LOCATION Street, Road or other descriptive location Legal Description Durham Road -- Quarter Section Township Range (SW Hall Blvd. To SW Upper Boones Ferry Rd.) NW 13 T2S R 1 W In or Near(City or Town) County Tax Map# Tax Lot# , Tigard Washington 2S 1W 13 AB 800 2S 1W 13 BA 100,400 Waterway River Mile Latitude Longitude Fenno Creek 1 45°22'N 122°45'W Is consent to enter property granted to the Corps and the Division of State Lands? 0 Yes 0 No ini JOINT o_F PERMIT APPLICATION FORM US Army Corps .0\:. ..-"'::' '- THIS APPLICATION WILL MEET THE REQUIREMENTS OF BOTH AGENCIES of Engineers• Portland District ! 8 59 4*.' .;. .- :.' : w.. •a' k;ef.'t� ..,-.�, 1.��,y,._v.:;...4 'a;•:S+!lil•T.�i�1.;LY4t I\73N r.C'.O.01 ,..' '-�y s� ti. yy�K ��;r. r�.-'M� ��� � �N`F-;•�1,,��,_-,eR` M`1'' `• '> "c. �r+4-+:•fv ::=�. ' k=-4 .�.-0. /.14:1•c���-i.45 v' �r."' - .. '1K�i �!f�Fi7l,. MR.. .- +1..."„f:.`S,3? '; :*- ., a o- r �.. ,,: .. . „�¢�flfi. :J:.i • ?1.s.:J. .a7'i+ :�.•.%:r.+ .�,.1...ti r!:} Corps Action ID Number Oregon Division of State Lands Number SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENPP-PE-RP Division of State Lands P.O. Box 2946 775 Summer Street NE Portland, OR 97208-2946 Salem, OR 97310 503/326-7730 503/378-3805 .. .................. . ... �.... _. .-.... .. ,_..... .. .. .. uae.....4.a.... r.l!,•`••l�+rh;.R:::^.:T reef •. ........ ..... ..-. - .. . .... .. .. 0 Applicant Name Washington County Department business# (503) 693-4461 of Land Use and Transportation home phone# and Address ATTN:Bill lhly FAX# (503) 693-4805 155 N. First Avenue, Suite 350 Hillsboro, OR 97124 Co Applicant business phone# (503) 626-0455 home phone# x7266 ® Authorized Agent W&H Pacific Inc. FAX# (503) 526-0775 ATTN: Jim Evans O Contractor 8405 SW Nimbus Ave. Name and Address Beaverton, OR 97008- 7120 Property Owner Oregon Dept. Of Transportation business phone # (503) 986-3658 (if different than applicant) ATTN:Matt Caswell home phone# Name and Address Room 417 Transportation FAX# (503) 986-3625 Building Salem, OR 97310 OZ PROJECT LOCATION Street, Road or other descriptive location Legal Description Durham Road Quarter Section Township Range (SW Hall Blvd. To SW Upper Boones Ferry Rd.) NW 13 T2S R1 W In or Near(City or Town) County Tax Map# Tax Lot# . Tigard Washington 2S 1W 13 AB 800 2S 1W 13 BA 100,400 _ Waterway River Mile Latitude Longitude Fenno Creek 1 45°22'N 122°45W Is consent to enter property granted to the Corps and the Division of . .s? ® Yes • No 0 PROPOSED PROJECT INFORMATION Activity Type: 0 Fill 0 Excavation(removal) 0 In-Water Structure 0 Maintain/Repair on Existing Structure Brief Description: Replace existing bridge. Place riprap to protect bridge abutment. Fill v,ill involve cubic yards annually and/or 402 cubic yards for the total project 402 cubic yards in a wetland or below the ordinary high water or high tide line Fill will be 0 Riprap 0 Rock 0 Gravel 0 Sand 0 Silt 0 Clay 0 Organics 0 Other Fill Impact Area is 0.08 Acres; varies length; varies width; 3 ft. ,depth Removal will involve cubic yards annually and/or; 402 cubic yards for the total project 402 cubic yards below the ordinary high water or high tide line Removal will be 0 Riprap 0 Rock 0 Gravel 0 Sand 0 Silt 0 Clay 0 Organics 0 Other Removal Impact Area is 0.08 Acres; varies length; varies width; 3 ft. depth Estimated Start Date July. 1996 Estimated Completion Date September 30, 1996 Will any material, construction debris, runoff, etc. enter a wetland or waterway?0 Yes 0 No If yes, describe the type of discharge and show the discharge location on the site plan. ® PROPOSED PROJECT PURPOSE&DESCRIPTION Project Purpose and Need: The project is intended to relieve traffic congestion and improve traffic safety on Durham Road, an important arterial connecting Interstate 5 with Highway 99W. Project Description: The project will widen a two-lane road with inadequate shoulders, and replace a narrow five-span, wood-piling supported bridge with a modem road with two 12'travel lanes, a 14' center turn lane, 5'bike lanes and 6.5'sidewalks. The proposed bridge will be a clear span with abutment in the same location as existing. The area around the abutment will be protected with Class 700 riprap, which will extend 3'below OHW(120). An area of about 4,000 square feet of stream bank downstream from the bridge will be graded down to ONW to mitigate the floodplain impacts of the new embankment. • How many project drawing sheets are included with this application? 4 NOTE: A complete application must include drawings and a location map submitted on separate 8'/:X 11 sheets. PROJECT IMPACTS AND ALTERNATIVES Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetland. A design with no fill below the elevation of OHW(120'was considered;however,it was found to be necessary to extend the riprap 3' below OHW to protect adequately the abutment from scour by the creek. Describe what measures you will use(before and after construction)to minimize impacts to the waterway or wetland. 1. 1n-water-work will be performed only during period set out by ODFW(July 1 -Sept. 30). 2. No concrete or asphalt will come into contact with the active flowing stream. 3. Only clean, durable rock shall be used for riprap. 4. No petroleum products, chemicals or other deleterious materials shall enter the water. 5. Removal of existing woody vegetation will be minimized, and limited to construction and access areas. 6. All disturbed streambank and floodplain areas will be seeded with grass and planted with native shrubs and trees to prevent erosion and restore the area. 7. Riprap shall be placed using land-based equipment NOTE: If necessary, use additional sheets. U ADDITIONAL INFORMATION Adjoining Property Owners and Their Addresses and Phone Numbers Duncan, John &Janice 16055 SW 74th Avenue, Tigard, OR 97223 Johnson, Carl 200 James Street, #407, Edmonds, WA 98020 Hamba�h, Harold&Mildred 7735 SW Durham Road, Tigard, OR 97224 Has the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon,in the past, e.g., wetland delineation,violation, permit, lease request, etc.? 0 YES ® NO • If yes, what identification number(s)were assigned by the respective agencies: Corps# State of Oregon# .. :••••.•o�...�--r•--c+--.� ..•-�. :�w.,.-.......-r.�syr�crr.,.ean•.w,r�n.w- ...-W,rwr±!w�•... .::. :�..-ti...e•+ n ►•. . ■.• .. • Y I COUNTY PLANNING DEPARTMENT AFFIDAVIT tto be completed by local planning official) O This project is not regulated by the local comprehensive plan and zoning ordinance. O This project has been reviewed and is consistent with the local comprehensive plan and zoning ordinance. O This project has been reviewed and is not consistent with the local comprehensive plan and zoning ordinance. O Consistency of this project with the local planning ordinance cannot be determined until the following local approval(s)are obtained: O Conditional Use Approval 0 Development Permit O Plan Amendment 0 Zone Change O Other An application 0 has 0 has not been made for local approvals checked above. Signature(of local planning official) Title City/County Date COASTAL ZONE CERTIFICATION If the proposed activity described in your permit application is within the Oregon coastal zone,the following certification is required before your application can be processed. A public notice will be issued with the certification statement which will be forwarded to the Oregon Department of Land Conservation and Development(DLCD)for its concurrence or objection. For additional information on the Oregon Coastal Zone Management Program, contact the department at 1175 Court Street NE,Salem, Oregon 97310 or call 503-373-0050. CERTIFICATION STATEMENT I certify that,to the best of my knowledge and belief,the proposed activity described in this application complies with the approved Oregon Coastal Zone Management Program and will be completed in a manner consistent with the program. Print/Type Name Title A.policant Signature Date SIGNATURE FOR JOINT APPLICATION (REQUIRED) Application is hereby made for the activities described herein. I certify that I am familiar with the information contained in the application, and,to the best of my knowledge and belief, this information is true, complete, and accurate. I further certify that I possess the authority including the necessary requisite property interests to undertake the proposed activities. I understand that the granting of other permits by local, county, state or federal agencies does not release me from the requirement of obtaining the permits requested before commencing the project. I understand that local permits may be required before the state removal-fill permit is issued. I understand that payment of the required state processing fee does not guarantee permit issuance. Print/Type...Name (coapplicant) Title • Applicant Signature (coapplicant) Date I certify that I may act as the duly authorized agent of the applicant. Print/Type Name Title Authorized Agent Signature Date PPLEMENTAL WETLAND IMPACT INFORMATION* (FOR WETLAND FILLS ONLY) Site Conditions of Impact Area Impact area is 0 Ocean 0 Estuary 0 River 0 Lake 0 Stream 0 Freshwater Wetland Note: Estuarian Resource Replacement is required by state law for projects involving intertidal or tidal marsh alterations. A separate Wetlands Resource Compensation Plan may be appended to the application. Has a wetland delineation been completed for this site? Q Yes 0 No If yes by whom: SR!/Shapiro Describe the existing Physical and biological character of the wetland/waterway site by area and type of resource(use separate sheets and photos,if necessary) Fanno Creek is an important perennial stream draining the eastern Washington County urbanizing area. It flows into the Tualatin River about a mile below the project. The creek has a mean annual flow of 64 c.f.s. in the project area. Flow and water qualify vary widely depending on rainfall events due to the urbanized nature of the watershed. The stream is deeply incised, with a narrow but fairly undisturbed riparian zone including the following species: Oregon ash, red alder, big-leaf maple, western wahoo, and hazelnut. Himalayan olackberry and reed canarygrass dominate a more disturbed area. Wildlife use includes ducks and songbirds. Such riparian zones typically function as a mitigation corridor for mammals such as raccoon and opossum, which are adapted to an urbanizing environment. There are no wetlands in the project area. Wetlands have been identified beyond the project boundaries (see attached sheet). Resource Replacement Mitigation Describe measures to be taken to replace unavoidably impacted wetland resources Removal of woody vegetation will be minimized within 60'of OHW. Where complete removal is unnecessary, e.g. for construction access, above-ground portions of trees and shrubs will be trimmed off so as to allow natural regeneration. The creek bank grading area and other disturbed areas outside the toe of the riprap will be seeded with grasses and planted with native shrubs and trees. The immediate creek bank zone will be planted with willow and dogwood. The remaining area will be planted with Douglas spiraea, vine maple, salmonberry, Oregon ash and bigleaf maple. Hydraulic Analysis For: Durham Road Bridge Crossing of Fanno Creek Prepared for: Washington County Department of Land Use and Transportation 155 North First Avenue, Suite 350 Hillsboro, Oregon 97124 Prepared by: W&H Pacific, Inc. 8405 SW Nimbus Avenue Beaverton, Oregon 97008 April 4, 1995 Purpose The Durham Road Project includes construction of a new bridge crossing at Fanno Creek. The proposed structure is a simple 100 foot clear span over the existing channel. No constriction to the flow is proposed since abutment locations will not change. A hydraulics report is required to evaluate the impacts of the proposal. This report will document compliance with the City of Tigard's"no-rise" floodplain criterion. Specifically, it addresses chapter 18.84.040, Approval Standards of the City's Sensitive Lands ordinance. These standards require that developments within the floodplain shall not increase the water surface (subsections A 1 and 3). Methodology This analysis used the Federal Emergency Management Agency's (F1.MA) standards for a "no-rise" determination. This involves preparation of three hydraulic models to demonstrate the following: • Verification - this model will duplicate the effective Flood Insurance Study (FIS) model. • Existing conditions -the verification model modified to reflect conditions prior to the project. • Proposed conditions- the existing conditions model revised to reflect the completed project. Computer modeling was performed using the HEC-2 (v4.6.2, Haestad Methods Implementation 6.52) computer program. This program was developed by the Corps of Engineers (COE) Hydraulic Engineering Center(HEC) in Davis, California. The following sections describe the application of this methodology and results. Verification The model for the effective FIS was obtained in digital form from the Corps of Engineers Portland, Oregon office. It is dated June 1980 with a revision in October 1983. The entire model (sections 0.020 through section 13.064) was run for this analysis. Figure 1 is a Vicinity Map showing the project location. Figure 2 is a portion of the effective FIS map which shows the Durham Road crossing ofFanno Creek. Table 1, Fanno Creek Model Comparisons, tabulates the FIS values and the results of the verification run. The results show excellent correlation between the published values and the model obtained from the Corps. A floppy disk is provided which contains all the models used in this analysis. The verification run is titled FNODUP.HC2. 1 Existing Conditions A review of the effective FIS model raised concerns regarding the bridge section used. Figure 3, Cross Sections, compares the effective section with actual survey data. It can be seen that the surveyed section contains significantly less area than the effective FIS section. The effective FIS model, then, was revised to reflect existing conditions. The revisions are listed below: Revisions to Effective FIS to Reflect Existing Conditions. • Archival records were changed to indicate that the model was revised by W&H Pacific. • Section number 1.43 was changed to section number 1.431. • GR cards at section 1.431 were changed to reflect surveyed geometry. • X1 card at section 1.431 was changed to reflect the revised GR data. These changes included left and right bank station offsets. The vertical adjustment factor was deleted. • NH card was revised for section 1.431 to match the new GR data. Roughness coefficients were not changed. • Section number 1.44 was changed to section number 1.441. • NH card for section 1.441 was changed to reflect the GR data entered at section 1.431. • BT stations for section 1.441 were revised to match the GR data. • SB card for section 1.441 was revised as follows: bottom width (BWC)was changed to 26.85 from 20; open area(BAREA)was changed to 727 from 830; side slopes(SS)were changed to 2.0 from 2.09; and, the inverts (ELCHU and ELCHD) was changed to 116.9 from 115.0. • The vertical adjustment factor at section 1.441 was deleted. • The low chord elevation (ELLC) of the bridge was changed on the X2 card to 130.4 from 130.7. Table 1 provides a summary of results for the existing conditions model. The summary shows the water surface is higher than the effective FIS model. This effect extends for approximately 1.9 miles upstream. A copy of the existing conditions model is provided on the disk enclosed as FNO_XTG.HC2. Proposed Conditions The Durham Road Project will, among other things, replace the bridge which currently crosses Fanno Creek. The existing bridge is a five span structure with four piers in the floodplain. The proposed bridge will be a clear span with abutments at the same location. The new bridge will be significantly higher to improve vertical roadway alignment. The Durham Road Project also widens the existing roadway surface. Figure 4, Proposed Bridge Crossing at Fanno Creek, is a topographic survey showing existing and proposed conditions. The City of Tigard's Sensitive Lands Ordinance requires mitigation of fill placed within the floodplain (18.84.040A1). Portions of this fill are mitigated by cutting overbank areas under the bridge. Figure 3, Cross Sections, provides a section showing proposed conditions. 2 •I • -.-5-..9-.-E.,.-N ' ': - 4 '° c-- 'r• • ` ^�� 'F-r ':Boni ' r. }'; 25' Er...e.___. A .. �- , - _ �' .,.•'-'_.4eoircta- k'ap 1 5029• aW le Sti/A' Al Ex�SY�d `:�^l•1i . z ,_ ..•'., '4J ter__•` :-•' r 1'•1.:! ::..:4:--- :, .1:: '..• :-..-2t4:' 11. . .... _ _.1Lif,....:;. )-=-•--Wr.- 4-_--:,'�I •.��'S NU._....5.4 rack.! �R� 11 I O C1 i =rfs—• � 1 a o9 o -- z a •• ` ` n . ,- �-IfV—Cam. �, ;'i _ .y;J� • " ,__-i, ,,,c4 , „....,1 , ..,. '.--- • •,,,,?• •.. 12 Vol ,, :, 1 „ „.,. ‘,......__ .... ; „. , ,_.1 ..., ., , .:., r-...--:--- 0:4--__ .„..:, •-.'....i • I/ /' :.•.. e-,;:. - t_../......, ' • • i. . :I. 'I rj \ T �� '� NI• w •flUc' X4'.-%-lam r\ r y R�i1D' ^.p•. .. � i) l �,�„ ' . �, - . .,; I o 1..r,�/' = ., •▪ *II I .!tea_dig•rd ' I_/a-••∎ 0 �� 7 tgh SOY 1 ' \ ® __ ! ••/ a �,`'°�=Z:2....�.-:'�� 4027 �� I j A I 1S °11.E Rty f�_•ii , .� ';l..,, �}- . ' r^ lc'.I S`0III•aam_ '• • Mile 101: / �' r Jr te` •.\ (J� J' {� -Sp i'. ' 97■ : : •• ::1:I T U • A T I N \'.\ k•• 7--. • r1'�.vl C•� R • y.• II.:Ii:1 kill-,1 •-. � 4 O•nona.::t �. 'r rs - u� •' ' /r�i - II' Cern-C. '7ry C .1 I YoC LJ 9 u ri1: �•.•' �s�7 trader ms"''j'_`-1 _ _ .;\i-;----o -- 4.r r !�-"-- C• ,P.Srr'' JFAc1Flc ♦ - Par•1 / •\ y/ ray... •� ii77 '- • /> `) 'tea=+: /. / II..�( rim _r� ��C ;� o, i � ' `C iii _ ` 1'-`mot=r°.� j ,r• i �� 'o. `�� B 123 d� '`1 ' 4 0 DA-. I BY I REVISION I CHK d I I Figure 1 I 1 I I I Vicinity Map DRAWT: 8Y: • Y.i'.•- Vsli PACIFIC CHECKED BY: a;.:.-: APPROVED BY: D „ y'�,y, _",� SCALE: ( PROJECT NO. I 1_E NAuE: 1 V, J SECTION, TOWNSHIP, RANGE: I i _ . — i • i _ - -I I •I I � • \_ r ! i i \ r ..„ _ i I / )- 1 A 7-) ../.. sm.\....... ...Tht 1 14414 wow••"" ,� I i i Ct3,0--•,,_ . I lL_• -1 oa LPaa+t�-----'-y-'' -(. =1 rai n _mama Nike s Eno!mot [ ,. Ri.t' /^ , . �,1/ 1 R' _ 1^ ter •}, � `.'_-_-- . ,--- - ‘,„....)::...,&-.1,...-L-1,f,_.;,_,......).7.,,7---.,--\.fi.....):77;i,,,......,7,„,,...,..ji .,..i.;‘.iii . .?,_,/ -;1-7--, \ ----1, F - r � 1 \o`N __. iis \• . ' ,` � � i — I ./ \ . , s. \----j0 I. \ , c3 ",,,,, r— —7 ....,,, _____ _______ I ... — ____f—' _ .1_ ��; �! ,, .ter , ^' -^ ' • • `.V -rl —.1 tom ✓ i )_ . �k • II /• -:.'. ;r' �,, gam! — :�!®EM ,"-- . �o I / i►� -��ssewr�w pail vj : �� ` ` � -.r aa4w��Or w -ws . ��. ----_, Li 4 f-i----..---' C )---„--.4, . " 1 I il _rte Sit \ \ ( .V ''' '-.--- 1( v.., „ • . .„, 11% [ I X I . h N M t o m \ rift:-..1,. '..• i I-.4., I o I I a) r_Lili › 1 \ i -a I 1 -b" ._, i ! cn , 1 f �o I ;I - ? r.* CD,a t I J `\ % 1W i I IV i' '0 i „_ -4-.., I • il _ I _ ii_ 11103•110...-: ----- m Figure 4 DRAWN BY: Proposed Bridge Crossing \V&}I , CHECKED BY At Fanno Creek 8405 S.W. Nimbus Avenue . BEAVERTON, OR 97008-7120 APPROVED BY: 1 SCALE 1 i�_201 I PROJECT NO. FILE NAME: Phone: (503) 626-0455 Fez: (50 3) sz5-U775- ` _ Planning • Engineering • Sur•e}in{; Landscape Architecture • Environmental Services LAST EDIT: PLOT DATE: The existing conditions model,then,made several revisions to reflect actual conditions. A summary of these changes follows. • Archival records were changed to indicate that the model was revised by W&H Pacific. • Section number 1.43 was changed to section number 1.431. • GR cards at section 1.431 were changed to reflect surveyed geometry. • X1 card at section 1.431 was changed to reflect the revised GR data. These changes included left and right bank station offsets. The vertical adjustment factor was deleted. • NH card was revised for section 1.431 to match the new GR data. Roughness coefficients were not changed. • Section number 1.44 was changed to section number 1.441. • NH card for section 1.441 was changed to reflect the GR data entered at section 1.431. • BT stations for section 1.441 were revised to match the GR data. • SB card for section 1.441 was revised as follows: bottom width(BWC)was changed to 26.85 from 20; open area(BAREA)was changed to 727 from 830;side slopes (SS)were changed to 2.0 from 2.09; and, the inverts(ELCHU and ELCHD)was changed to 116.9 from 115.0. • The vertical adjustment factor at section 1.441 was deleted. • The low chord elevation (ELLC)of the bridge was changed on the X2 card to 130.4 from 130.7. Table 1 provides a summary of results for the existing conditions model. The summary shows the water surface is higher than the effective FIS model. This effect extends for approximately 1.9 miles upstream. A copy of the existing conditions model is provided on the disk enclosed as FNO_XTG.HC2. Proposed Conditions The Durham Road Project will, among other things,replace the bridge which currently crosses Fanno Creek. The existing bridge is a five span structure with four piers in the floodplain. The proposed bridge will be a clear span with abutments at the same location. The new bridge will also be significantly higher to improve vertical roadway alignment. The Durham Road Project also widens the existing roadway surface. Figure 4,Proposed Bridge Crossing at Fanno Creek, is a topographic survey showing existing and proposed conditions. The City of Tigard's Sensitive Lands Ordinance requires mitigation of fill placed within the floodplain(18.84.040A1). Portions of this fill are mitigated by cutting overbank areas under the bridge. Figure 3, Cross Sections,provides a section showing proposed conditions. The proposed conditions model changes the existing conditions model to reflect the project. The primary changes involved revising the bridge opening to reflect the new construction. Specific changes are as follows: • Archival records were changed to indicate that the model was revised by W&H Pacific. • X1 for section 1.431 was revised to indicate a shorter reach length downstream. Bank stations were also changed on this card to reflect the new GR data set. • GR cards for section 1.431 were revised to reflect the proposed opening configuration. • X1 for section 1.441 was revised to indicate the new longer reach length. • NH cards for both 1.431 and 1.441 were revised to reflect the revised GR stations. `N' values were also lowered on section 1.441 to 0.06 from 0.075 in the ovcrbank area. This was done to reflect th- 2 r . 1 Table 1 Fanno Creek Model Comparisons Verification Existing Conditions Proposed Conditions Cross FIS W&HP Difference W&HP Difference W&HP Difference Difference Section Distance Values , Verification , From FIS Extg. Cond. From Verification Prop'd. From Extg. From Verification A 1.11 123.7 123.71 0.01 123.71 0.00 123.71 0.00 0.00 B 1.44 128.3 128.32 0.02 128.77 0.45 128.51 -0.26 0.19 C 1.53 130.0 130.01 0.01 130.94 0.93 130.23 -0.71 0.22 D 2.41 133.8 133.76 -0.04 133.88 0.12 133.78 -0.10 0.02 E 2.69 136.9 136.88 -0.02 136.92 0.04 136.88 -0.04 0.00 F 2.80 137.7 137.72 0.02 137.76 0.04 137.73 -0.03 0.01 G 3.34 140.0 139.99 -0.01 140.00 0.01 139.99 -0.01 0.00 H 3.68 141.1 141.05 -0.05 141.05 0.00 141.05 0.00 0.00 I 3.86 141.9 141.85 -0.05 141.85 0.00 141.65 0.00 0.00 J 4.16 145.9 145.90 0.00 145.90 0.00 145.90 0.00 0.00 K 4.50 146.8 146.78 -0.02 146.78 0.00 146.78 0.00 0.00 L 4.73 148.0 148.00 0.00 148.00 0.00 I 148.00 0.00 0.00 NOTE: 1) A negative difference indicates a fall in WSE. A positive difference indicates a rise in the WSE. 2) Durham Road bridge lies between stations 1.43 and 1.44 I O , A 2 A A D O I r C3 l . _ v Oa m .y < i w -c —._.—_.... ._ z ti vm r r� ! , ; i .i.,t,...1.,.:44.4... I . # n Ii• �a � o II I j • 'Jr • • • • t lir • Effective FIS i. • • C� Ji•=x • \ . . , . i _ ` Ext Conditions - , • � � g I _ E. , J• ;- . - - 1. . i / • . .. . •• / - , X20 ��. Li Nz O I , • .A. N 11 ! • U' LC) v . ; : . Prop'd Conditions . _ : .;..l •�: . /. C...) (n. c Ii • 4... • F = 1i. • r . . '. ...I :. •• I- + , . .. c I . , . l . t . I . . • . ; : . •.. . ,. . .� : � i:.J� r . �/ �1•� I. j i i f I ,. . ' /i �'�1� OVERBANKj AREAS�`REMOVED �FOR PROPOOSED CONDITIONS • I AST Mir- PLOT DATE: t 1 o • u r t a 2. N U E o u� n•r APPROXIMATE SCALE O ., r 4O- . [400 0 400 FEET u m a 7c. • ,. ........ \ P a u"C tl p NATIONAL FLOOD INSURANCE PROGRAM zo _cFLODDBUUNDAYAND' w .iv o va N •� - +.�•.c OV1 , O O ..---d A A u o ' - FLOODWAY MAP A a. ,0 i u6 v • l ' >,CITY OF•• 9a �': TIGARD, OREGON i=fillr WASHINGTON COUNTY Z 7 C) .4j,1.. . 6,-- !........-... _ vi, ^ PANEL 5 OF 5 c o (SEE MAP INDEX FOR PANELS NOT PRINTED) Z �j 0 Li ( , �:\..." .-•� n cl a_ OP e ..........= ILL)?_ . \ O G J/Q •J �� ^ U• .y�,) © ® � i w w — —� r a /� I -"^ COMMUNITY PANEL NUMBER / �J 410276 0005 • J I r EFFECTIVE DATE: °�" ' . i� r v� �z MARCH 1, 1982 m I o a L_ SW BRAD('t :l!;�!� �° CO o o z • I +`0— * Q w Q_ Z I �, i� Federal Emergency Management Agency SHEET o — F- w Appendix t ) o Federal Emergency Management Agency Washington, D.C. 20472 o o CERTIFICATION OF A "NO—RISE" DETERMINATION FOR A PROPOSED FLOODWAY DEVELOPMENT City of Tigard Bridge Reconstruction Community Name Development Name Durham Road @ Fanno Creek Lot/Property Designation City of Tigard Property Owner I hereby certify that the proposed remedial measures, in combination with the property development designated above, will result in no loss of flow conveyance during the occurrence of the 1 percent annual chance of exceedence (100—year flood) discharge. I further certify that the data submitted herewith in support of this request are accurate to the best of my knowledge, that the • analyses have been performed correctly and in accordance with sound engineering practice, and that the proposed structural works are designed in accordance with sound engineering practice. ' 9r Date Registered Professional Engineer '4-, 14.481 • Seal OREGON cc • p0 Expira ion Date 12-31-96 • • '�. Date: 12MAR95 Run Time: 18:14:12 HMVersion: 6.52 Data File: fno dup.hc2 Page 1 THIS RUN EXECUTED 12MAR95 18:14:12 :-2 WATER SURFACE PROFILES -lion 4.6.2; May 1991 IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HTDSEC TAPE 531 FILENAME #11 : ICFANNO3 FANNO CREEK R.M. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1980 REVISED OCTOBER 1983 :TUOY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD W&H PACIFIC VERIFICATION RUN - MARCH 1995 :ROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON OPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 '.APS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON ISCHARGES . TART METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SOOERLIND, STUDY MANAGER ENG. HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RH 0.02 TO RH 13.06 10 YEAR FLOOD FANNO CREEK !CHECK INQ NINV IDIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 EFFECTIVE FIS MODEL .n Date: 12MAR95 Run Time: 18:14:12 HMVersion: 6.52 Data file: fno_dup.hc2 Page 3 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1.11 0 0 0 40 40 40 0 0.1 0 0 1 127.9 130.0 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 421 130.0 130.0 0.100 0.095 0.050 1.14 18 185 240 120 140 130 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 128.0 425 130.0 450 140.0 500 0.090 0.110 0.055 1.32 21 60 122 410 960 960 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 134.0 332 0.095 0.100 0.055 1.40 18 175 250 420 310 400 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 116.`. 203 116.4 209 115.9 212 115.8 216 115.4 220 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 136.0 310 138.0 380 140.0 425 0.3 0.5 4 0.075 835 0.050 876 0.085 1000 0.060 1044 1.43 26 835 876 200 230 200 0 -0.2 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 135.0 560 134.4 590 132.2 605 130.7 615 130.7 720 130.7 810 121.3 810 120.3 835 117.3 843 117.2 849 116.7 852 116.6 856 116.2 860 , 115.1 865 115.0 870 117.2 874 122.0 876 130.7 906 134.0 950 138.0 1000 140.0 1044 4 0.075 835 0.050 876 0.110 1000 0.060 1044 1.10 1.5 2.35 0 20 4 830 2.09 115.0 115.0 1.44 0 0 0 40 40 40 0 0.2 0 0 1 130.7 132.2 8 605 132.2 132.2 615 132.2 130.7 720 132.2 130.7 810 132.2 130.7 811 132.2 130.7 905 132.2 130.7 906 132.2 130.7 950 134.0 134.0 0.080 0.100 0.052 0.3 0.5 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 EFFECTIVE FIS MODEL 1 • Run Date: 12HAR95 Run Time: 18:14:12 HHVertion: 6.52 Data file: fno_dup.hc2 Page 26 SECNO XLCH ELTRD ELLC ELH1N Q CWSEL CRIWS EG 10*KS VCH AREA .01K 1.320 960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.430 200.00 0.00 0.00 114.80 2923.00 126.79 0.00 127.27 21.05 5.93 610.46 637.11 1.430 200.00 0.00 0.00 114.80 3809.00 127.79 0.00 128.42 25.18 6.91 694.89 759.15 1.430 200.00 0.00 0.00 114.80 4193.00 128.18 0.00 128.89 26.76 7.29 729.48 810.48 1.430 200.00 0.00 0.00 114.80 5093.00 129.01 0.00 129.88 30.43 8.15 803.85 923.24 1.440 40.00 132.20 130.70 115.00 2923.00 126.88 0.00 127.37 22.17 6.04 600.92 620.76 1.440 40.00 132.20 130.70 115.00 3809.00 127.91 0.00 128.56 26.20 7.01 687.96 744.16 lit 1.440 40.00 132.20 130.70 115.0D 4193.00 128.32 0.00 129.05 27.73 7.39 723.80 796.27 1.440 40.00 132.20 130.70 115.00 5093.00 129.19 0.00 130.08 31.21 8.24 801.54 911.61 1.470 200.00 0.00 0.00 115.30 2923.00 127.42 0.00 127.83 22.78 5.86 796.28 612.45 1.470 200.00 0.00 0.00 115.30 3809.00 128.67 0.00 129.08 20.99 6.11 1030.72 831.42 1.470 200.00 0.00 0.00 115.30 4193.00 129.18 0.00 129.58 20.31 6.19 1128.04 930.43 1.470 200.00 0.00 0.00 115.30 5093.00 130.27 0.00 130.68 19.02 6.37 1361.27 1167.77 1.530 490.00 0.00 0.00 115.70 2913.00 128.35 0.00 128.60 13.32 5.01 1258.49 798.05 1.530 490.00 0.00 0.00 115.70 3792.00 129.53 0.00 129.76 11.78 5.09 1661.66 1104.83 1.530 490.00 0.00 0.00 115.70 4174.00 130.01 0.00 130.24 11.27 5.12 1829.79 1243.18 1.530 490.00 0.00 0.00 115.70 5069.00 131.05 0.00 131.27 10.16 5.16 2212.71 1590.25 2.000 2400.00 0.00 0.00 117.60 2913.00 130.41 0.00 130.55 5.98 3.80 1957.15 1191.68 2.000 2400.00 0.00 0.00 117.60 3792.00 131.40 0.00 131.53 5.63 3.92 2563.38 1598.08 2.000 2400.00 0.00 0.00 117.60 4174.00 131.81 0.00 131.93 5.46 3.95 2819.94 1786.89 2.000 2400.00 0.00 0.00 117.60 5069.00 132.70 0.00 132.81 5.11 4.02 3394.97 2242.17 2.010 620.00 0.00 0.00 118.30 2913.00 130.71 0.00 130.85 6.63 3.98 2037.81 1131.68 2.010 620.00 0.00 0.00 118.30 3792.00 131.66 0.00 131.79 6.29 4.11 2630.92 1511.58 2.010 620.00 0.00 0.00 118.30 4174.00 132.06 0.00 132.18 6.11 4.14 2886.91 1689.31 2.010 620.00 0.00 0.00 118.30 5069.00 132.93 0.00 133.04 5.71 4.20 3459.09 2121.12 2.410 2340.00 0.00 0.00 119.70 2913.00 132.56 0.00 132.77 13.74 4.62 1179.34 785.86 2.410 2340.00 0.00 0.00 119.70 3792.00 133.42 0.00 133.64 14.04 4.94 1487.15 1011.93 2.410 2340.00 0.00 0.00 119.70 4174.00 133.76 0.00 133.99 14.06 5.05 1619.44 1113.05 2.410 2340.00 0.00 0.00 119.70 5069.00 134.51 0.00 134.74 13.81 5.23 1923.96 1364.18 2.640 1200.00 0.00 0.00 120.80 2913.00 133.94 0.00 134.16 13.32 4.66 1003.10 798.25 2.640 1200.00 0.00 0.00 120.80 3792.00 134.90 0.00 135.18 16.21 5.34 1146.00 941.51 2.640 1200.00 0.00 0.00 120.80 4174.00 135.28 0.00 135.59 17.38 5.61 1204.15 1001.19 2.640 1200.00 0.00 0.00 120.80 5069.00 136.07 0.00 136.43 19.98 6.20 1331.75 1134.16 EFFECTIVE FIS MODEL FANNO CREEK Cross section 1.4•148 .895 • >4 .855 b-<1 .188 136- • • E13Z-1 e • u 128- • a : t 1Z4: • , • i 0 n 120- • 116- • 112 i I 1 1 l l 1 i l I I I I 1 l l I l I I " " 1 " " 1 " . , 1 , " . 1 " " 1 " " 1 " " p " , 1 8 40 80 120 160 208 240 288 328 368 488 440 480 Distance FANNO CREEK Cross section 1.43•145- • 1 ..875 • .885- 0 0 148: 5 • • 6 . . 0 E 135- . 1 130: a : t 125- • i o : a n 128- . 0 . • 115- • 110 I i 1 f I l I I I I i 1 i I i 1 1 I I 1 1 1 1 I I I I I I I I I I I I I I I I I 1 7 1 i i T 1 T r i i 1 T I 1 1 1 I l 160 248 328 488 480 566 648 720 800 888 960 1848 1128 Distance EFFECTIVE FIS MODEL 1 I FANNO CREEK Cross section 1.44 145- • .075 • • >I 1•41-.11O--E-1 .I . e 0 148 • - • - 5 • • • • 8 0 E 135- • 1 : u• 130- �� a ROOMER t 125- i 1 - , o . . I) 120- . o '. . • . 115- • 118 i . . . i , , , . i . . , , 1 . . . , T , i . T i , . , , i , . . , i , , , . i . , , , i , . . . i , , , . i . , . , ) 168 240 328 400 480 560 640 7Z0 808 888 960 1040 1128 Distance FANNO CREEK Cross section 1.47 1.48-31 .880 - >- >< •.188 • 0 136- 5 • Z E 132- . 1 u 128- • a : i t 124- . 1 • o n 128 - 0 • • 116- • . 1121 , „ , iT , , , irrrT1II1Iir . , . . . r , i . . . . i . , . ri , , . , i . , . . i , , . . 1 , . . . l 0 49 80 120 160 208 240 280 320 360 400 440 488 Distance EFFECTIVE FiS MODEL.: • Run Date: 31MAR95 Run Time: 10:51:58 'ersion: 6.52 Data File: fno_xtg.hc2 Page 1 THIS RUN EXECUTED 31MAR95 10:51:58 C-2 WATER SURFACE PROFILES rsion 4.6.2; May 1991 S IS AN ARCHIVAL RUN ALL ..ATA AND RESULTS ARE SAVED ON UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HYDSEC TAPE 531 FILENAME #11 : ICFANNO3 FANNO CREEK R.M. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1980 REVISED OCTOBER 1983 STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCROLLS FERRY ROAD WWI PACIFIC MODIFICATIONS FOR EXISTING CONDITIONS - MARCH 1995 CROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 MAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON DISCHARGES . START METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SOOERLIND, STUDY MANAGER ENG. HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RM 0.02 TO RM 13.06 10 YEAR FLOOD FANNO CREEK ICHECK INO NINV IDIR STRT METRIC HVINS 0 WSEL FO -1 2 0.002462 118.0 Existing Conditions Model • c • Run Date: 31HAR95 Run Time: 10:51:58 Version: 6.52 Data File: fro_xtg.hc Page 3 3 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1 1.11 - 0 0 0 40 40 40 0 0.1 0 0 1 127.9 130.0 i 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 t 421 130.0 130.0 0.100 0.095 0.050 1 1.14 18 185 240 120 140 130 2 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 2 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 2 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 2 128.0 425 130.0 450 140.0 500 0.090 0.110 0.055 1 1.32 21 60 122 410 960 960 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 134.0 332 0.095 0.100 0.055 1.40 18 175 250 420 310 400 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 136.0 310 138.0 380 140.0 425 0.3 0.5 4 0.075 838 0.050 874 0.085 1000 0.060 1044 1.431 27 838 874 200 230 200 0 0 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 135.0 560 134.4 590 132.2 605 130.7 615 130.7 720 130.7 804 122.9 816 122.7 824 122.9 838 118.6 843 117.7 847 116.9 858 117.2 862 122.4 867 125.2 874 125.1 879 124.6 889 127.5 893 130.5 896 134 950 138 1000 140 1044 4 0.075 838 0.050 874 0.110 1000 0.060 1044 . 1.10 1.5 2.35 0 26.85 4 727 2.0 116.9 116.9 1.441 0 0 0 40 40 40 0 0 0 0 1 130.4 132.2 5 605 132.2 132.2 720 132.2 132.2 804 132.2 130.4 896 132.2 130.5 950 134 134 0.080 0.100 0.052 0.3 0.5 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 Existing Conditions Model Run Date: 31r.AR95 Run Time: 10:51:58 version: 6.52 Data File: fno_xtg.hc2 Page 26 SECNO XLCH ELTRD ELLC ELMIN Q CWSEL CRIWS EG 10*KS VCH AREA .01K 1.320 -960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 950.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 950.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.431 200.00 0.00 0.00 116.90 2923.00 126.95 0.00 128.02 72.43 8.96 407.77 343.46 1.431 200.00 0.00 0.00 116.90 3809.00 127.92 0.00 129.20 75.46 9.92 489.08 438.49 1.431 200.00 0.00 0.00 116.90 4193.00 128.29 0.00 129.65 76.84 10.30 521.17 478.32 1.431 200.00 0.00 0.00 116.90 5093.00 129.07 0.00 130.65 81.21 11.19 588.06 565.15 1.441 40.00 132.20 130.40 116.90 2923.00 127.27 0.00 128.24 62.20 8.54 434.08 370.61 1.441 40.00 132.20 130.40 116.90 3809.00 128.31 0.00 129.46 64.50 9.44 521.95 474.28 1.441 40.00 132.20 130.40 116.90 4193.00 128.70 0.00 129.94 65.71 9.81 556.38 517.27 1.441 40.00 132.20 130.40 116.90 5093.00 129.56 0.00 130.98 68.43 10.62 631.75 615.66 1.470 200.00 0.00 0.00 115.30 2923.00 128.66 0.00 128.90 12.43 4.69 1028.53 829.24 1.470 200.00 0.00 0.00 115.30 3809.00 129.91 0.00 130.17 12.31 5.03 1272.83 1085.52 1.470 200.00 0.00 0.00 115.30 4193.00 130.41 0.00 130.67 12.15 5.13 1399.96 1203.14 1.470 200.00 0.00 0.00 115.30 5093.00 131.49 0.00 131.76 11.55 5.28 1704.04 1498.42 1.530 490.00 0.00 0.00 115.70 2913.00 129.18 0.00 129.34 8.34 4.19 1540.65 1008.87 1.530 490.00 0.00 0.00 115.70 3792.00 130.43 0.00 130.59 7.56 4.30 1985.02 1379.46 1.530 490.00 0.00 0.00 115.70 4174.00 130.92 0.00 131.07 7.31 4.35 2163.14 1543.28 1.530 490.00 0.00 0.00 115.70 5069.00 131.98 0.00 132.13 6.90 4.47 2554.53 1929.39 2.000 2400.00 0.00 0.00 117.60 2913.00 130.67 0.00 130.78 5.12 3.58 2107.50 1286.90 2.000 2400.00 0.00 0.00 117.60 3792.00 131.77 0.00 131.87 4.62 3.63 2790.56 1764.79 2.000 2400.00 0.00 0.00 117.60 4174.00 132.21 0.00 132.31 4.44 3.64 3071.76 1981.02 2.000 2400.00 0.00 0.00 117.60 5069.00 133.18 0.00 133.27 4.09 3.68 3707.52 2506.75 2.010 620.00 0.00 0.00 118.30 2913.00 130.92 0.00 131.04 5.77 3.77 2169.86 1212.73 2.010 620.00 0.00 0.00 118.30 3792.00 131.98 0.00 132.09 5.26 3.83 2837.14 1653.88 2.010 620.00 0.00 0.00 118.30 4174.00 132.41 0.00 132.51 5.05 3.84 3117.06 1857.65 2.010 620.00 0.00 0.00 118.30 5069.00 133.36 0.00 133.45 4.64 3.87 37..6.62 2354.25 2.410 2340.00 0.00 0.00 119.70 2913.00 132.59 0.00 132.80 13.45 4.59 1190.98 794.15 2.410 2340.00 0.00 0.00 119.70 3792.00 133.50 0.00 133.72 13.37 4.85 1520.51 1037.22 2.410 2340.00 0.00 0.00 119.70 4174.00 133.87 0.00 134.09 13.24 4.93 1663.36 1147.10 2.410 2340.00 0.00 0.00 119.70 5069.00 134.69 0.00 134.90 12.61 5.04 1996.06 1427.49 2.640 1200.00 0.00 0.00 120.80 2913.00 133.95 0.00 134.17 13.25 4.65 1004.99 800.12 2.640 1200.00 0.00 0.00 120.80 3792.00 134.94 0.00 135.22 16.03 5.32 1151.34 947.23 2.640 1200.00 0.00 0.00 120.80 4174.00 135.32 0.00 135.63 17.13 5.58 1211.16 1008.38 2.640 1200.00 0.00 0.00 120.80 5069.00 136.14 0.00 136.50 19.52 6.15 1343.98 1147.44 Existing Conditions Model . • FANNO CREEK Cross section 1.431 144: 4 • '.075 • - Ci F--.885--Bi .I 0 0 140- 5 6 0 E 136- • 1 u 132: . . • a : Mimi t 128- . 1 o n 124- . . . 120- . 116 I I I I I I I I I I I 1 1 I I I I 1 1 11 1 1 1 I 1 1 T I I I I I I I , I I 1 I I I I I I I 1 1 1 17 1 1 1 I 1 1 I I I 160 Z40 320 400 480 568 640 728 800 888 960 1040 1120 Distance FANNO CREEK Cross section 1.441 144- ..075 . . td H-.116-D. 1 . B 0 140- 5 ' 6 0 E 136- • 1 - u• 132- --t` ` a 1—T,- 1 1 t 128- . 1 I, o 1 n 124- 11 ., • I, I 1, 1 . 1 II I r 120- 1 . I, 1 , I _.1 116 160 240 320 400 480 56B 648 720 800 880 968 1840 1120 Distance EXISTING CONDITIONS MODEL • In Date: 31MAR95 Run Time: 10:58:39 :rsion: 6.52 Data File: fno_prop.hc2 Page 1 THIS RUN EXECUTED 31MAR95 10:58:39 -2 WATER SURFACE PROFILES >ion 4.6.2; May 1991 • IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HYDSEC TAPE 531 FILENAME #11 : ICFANN03 FANNO CREEK R.M. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1930 REVISED OCTOBER 1983 TUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD ******* W&H PACIFIC MODIFICATIONS FOR PROPOSED CONDITIONS AT DURHAM ROAD X-ING MARCH 1995 ROSS SECTICNS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON DPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 ;PS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON ISCMARCES . TART METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SODERLIND, STUDY MANAGER ENG. ******* HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RH 0.02 TO RM 13.06 10 YEAR FLOOD FANNO CREEK ICHECK INO NINV IDIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 Proposed Conditions Model Run Date: 31MAR95 Run Time: 10:58:39 Version: 6.52 Data File: fno_prop.h Page 3 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1.11 0 0 0 40 40 40 0 0.1 0 0 1 127.9 130.0 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 421 130.0 130.0 0.100 0.095 0.050 1.14 18 185 240 120 140 130 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 128.0 425 130.0 450 140.0 500 0.090 0.110 0.055 1.32 21 60 122 410 960 960 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 134.0 332 0.095 0.100 0.055 1.40 18 175 250 420 310 400 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 136.0 310 138.0 380 140.0 425 0.3 0.5 3 .06 839 0.050 865 .06 1044 1.431 25 839 865 180 210 180 0 0 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 138.06 560 138.06 590 138.06 605 138.06 615 138.06 720 138.06 799 131.0 799 120.3 814 120 839 118.6 843 117.7 847 116.9 858 117.2 862 120 865 120.1 868 132.6 897 138.06 897 138.06 95. 138.06 1000 140 1044 3 .06 839 0.050 865 .06 1044 1.10 1.5 2.35 0 44.8 0 1074 1.5 116.9 116.9 1.441 0 0 0 60 60 60 0 0 0 0 1 132.6 138.06 5 605 138.06 138.06 720 138.06 138.06 799 138.06 132.6 897 138.06 132.6 950 138.06 138.06 0.080 0.100 0.052 0.3 0.5 ' 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 Proposed Conditions Model Rum Date: 31HAR95 Run Time: 10:58:39 !rsion: 6.52 Data File: fno_prop.hc2 Page 26 SECNO XLCH ELTRD ELLC ELKIN 0 CWSEL CRIWS EG 10*KS VCH AREA .01K 1.320 960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.431 180.00 0.00 0.00 116.90 2923.00 126.78 0.00 127.41 35.73 7.36 498.67 489.02 1.431 180.00 0.00 0.00 116.90 3809.00 127.80 0.00 128.59 39.04 8.28 581.60 609.62 1.431 180.00 0.00 0.00 116.90 4193.00 128.19 0.00 129.05 40.58 8.66 613.73 658.25 1.431 180.00 0.00 0.00 116.90 5093.00 129.00 0.00 130.02 44.12 9.50 683.23 766.72 1.441 60.00 138.06 132.60 116.90 2923.00 127.05 0.00 127.63 31.53 7.06 520.84 520.54 1.441 60.00 138.06 132.60 116.90 3809.00 128.11 0.00 128.83 34.55 7.95 607.05 648.05 1.441 60.00 138.06 132.60 116.90 4193.00 128.51 0.00 129.30 35.83 8.31 641.14 700.50 1.441 60.00 138.06 132.60 116.90 5093.00 129.37 0.00 130.30 38.72 9.09 715.45 818.46 1.470 200.00 0.00 0.00 115.30 2923.00 127.80 0.00 128.14 18.83 5.47 865.13 673.66 1.470 200.00 0.00 0.00 115.30 3809.00 129.02 0.00 129.38 17.94 5.76 1098.01 899.41 1.470 200.00 0.00 0.00 115.30 4193.00 129.50 0.00 129.86 17.68 5.89 1191.41 997.21 1.470 200.00 0.00 0.00 115.30 5093.00 130.54 0.00 130.91 16.96 6.10 1436.12 1236.70 1.530 490.00 0.00 0.00 115.70 2913.00 128.57 0.00 128.79 11.72 4.77 1331.92 851.06 1.530 490.00 0.00 0.00 115.70 3792.00 129.76 0.00 129.97 10.47 4.87 1743.97 1171.85 1.530 490.00 0.00 0.00 115.70 4174.00 130.23 0.00 130.44 10.07 4.91 1913.14 1315.58 1.530 490.00 0.00 0.00 115.70 5069.00 131.24 0.00 131.45 9.35 5.00 2282.67 1657.50 2.000 2400.00 0.00 0.00 117.60 2913.00 130.47 0.00 130.60 5.78 3.76 1988.78 1211.39 2.000 2400.00 0.00 0.00 117.60 3792.00 131.48 0.00 131.60 5.38 3.85 2613.67 1634.35 2.000 2400.00 0.00 0.00 117.60 4174.00 131.89 0.00 132.01 5.22 3.89 2871.86 1826.21 2.000 2400.00 0.00 0.00 117.60 5069.00 132.78 0.00 132.90 4.90 3.95 3452.15 2289.72 2.010 620.00 0.00 0.00 118.30 2913.00 130.75 0.00 130.89 6.45 3.94 2063.47 1147.26 2.010 620.00 0.00 0.00 118.30 3792.00 131.73 0.00 131.86 6.05 4.05 2674.73 1541.17 2.010 620.00 0.00 0.00 118.30 4174.00 132.13 0.00 132.25 5.87 4.08 2932.84 1722.30 2.010 620.00 0.00 0.00 118.30 5069.00 133.00 0.00 133.12 5.50 4.14 3510.54 2162.07 2.410 2340.00 0.00 0.00 119.70 2913.00 132.56 0.00 132.77 13.68 4.62 1181.76 787.58 2.410 2340.00 0.00 0.00 119.70 3792.00 133.43 0.00 133.66 13.91 4.92 1493.68 1016.87 2.410 2340.00 0.00 0.00 119.70 4174.00 133.78 0.00 134.01 13.91 5.03 1627.33 1119.15 2.410 2340.00 0.00 0.00 119.70 5069.00 134.54 0.00 134.77 13.60 5.20 1935.58 1374.31 2.640 1200.00 0.00 0.00 120.80 2913.00 133.94 0.00 134.16 13.30 4.66 1003.50 798.64 2.640 1200.03 0.00 0.00 120.80 3792.00 134.91 0.00 135.19 16.18 5.34 1147.03 942.85 2.640 1200.00 0.00 0.00 120.80 4174.00 135.29 0.00 135.59 17.34 5.61 1205.37 1002.44 2.640 1200.00 0.00 0.00 120.80 5069.00 136.08 0.00 136.44 19.90 6.19 1333.65 1136.24 Proposed Conditions Model _ FANNO CREEK Cross section 1.431 144- ..868 • • • CI k] .060-6- • 0 14 lr` 5 • • • 0 E 136- • 1 • u 132-• . a i128- . . o n 124- . 1 120: . l • 116 1 1 1 1 1 , 1 1 1 1 1 1 1 1 1 1 1 1 I I I 1 I i T , , , I I I I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I 1 1 , 1 1 1 1 1 1 1 1 1 168 240 328 480 480 568 640 720 880 880 968 1848 1120 Distance FANNO CREEK Cross section 1.441 144- .068 • G1 f a .060—I • 0 140: 5 • r, E 136- . � 1 , , e • \,--- u 132: . . • a : 1 t 128- ii, • i - , o 1124- . , • 120- • , , • • 1 t 116 I I I I I I I 1 1 1 I I I 1 1 1 I 1 I 1 1 1 1 1 1 I I I I 1 I I I I I I I I I 1 I I I I 1 I T T 1 1 1 1 1 I I l i I 1 1 160 240 320 480 480 560 648 720 808 880 960 1040 1120 Distance PROPOSED CONDITIONS MODEL SLR 95-0013 FILE CITY OF TIGARD CITY OF TIGARD HEARING'S OFFICER OREGON SEPTEMBER 25, 1995 - 7:00 P.M. 13125 SW HALL BOULEVARD TIGARD, OR 97223 ioc anyone wishing to speak on an agenda item should sign on the appropriate sign-in sheet(s). PUBLIC NOTICE: Assistive Listening Devices are available for persons with impaired hearing and should be scheduled for Planning Commission meetings by noon on the Monday prior to the meeting. Please call (503) 639- 4171 , Ext. 320 (voice) or (503) 684-2772 (TDD - Telecommunications Devices for the Deaf). Upon request, the City will also endeavor to arrange for the following services: ❖ Qualified sign language interpreters for persons with speech or hearing impairments; and ❖ Qualified bilingual interpreters. Since these services must be scheduled with outside service providers, it is important to allow as much lead time as possible. Please notify the City of your need(s) by 5:00 p.m. on the Wednesday preceding the meeting date at the same phone numbers as listed above. [OVER FOR MEETING AGENDA ITEMS] TIGARD HEARINGS OFFICER-9/25/95 PAGE I OF 2 h:\login\patty\agendho9.25 CITY OF TIGARD HEARINGS OFFICER SEPTEMBER 25, 1995 - 7:00 P.M. AGENDA 1. CALL TO ORDER 2. PUBLIC HEARING 2.1 SENSITIVE LANDS REVIEW (SLR) 95-0013 > DURHAM BRIDGE < A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. 3. OTHER BUSINESS 4. ADJOURNMENT TIGARD HEARINGS OFFICER-9/25/95 PAGE 2 OF 2 h:V ogi nlpatrvlagendho9.25 ....vs • a + 41` vw rMrcr , IIVI:. Legal P.O. BOX 370 PHONE(503)684-0360 Notice TT 8 3 0 6 BEAVERTON, OREGON 97075 Legal Notice Advertising • City of Tigard • ❑ Tearsheet Notice 1.3125 SW Hall Blvd . • Tig4rd,Oregon 97223-8199 • ❑ Duplicate Affidavit 'Accounts Payable-Terry • The following will be considered by the Tigard Hearings Officer on Mon- day,September 25. 1995,at 7:00 P.M.,at Tigard Civic Center-Town Hall, 13125 S.W. Hall Boulevard,Tisard,Oregon.Both public,oral and written testimony is invited.The public hearing on this matter will be con- AFFIDAVIT OF PUBLICATION ducted in accordance with the rules of Chapter 18.32 of the Tigard STATE OF OREGON, ) Municipal Code,and rules and procedures of the Hearings Officer.Failure COUNTY OF WASHINGTON, )ss* to raise an issue in person or by letter accompanied by statements or I,_ ____ Kath y_Sn der evidence sufficient to allow the hearing's authority and all parties to y respond precludes an appeal,and failure to specify the criterion from the being first duly sworn, depose and say that I am the Advertising Community Development Code or Comprehensive Plan at which a com- Director, or his principal clerk, of the_` igard-Tualatin Times ment is directed precludes an appeal based on that criterion. Further infor- a newspaper of general circulation as defined in ORS 193.010 mation may be obtained from the Planning Division at 13125 S.W. Hall and 193.020; published at_ Tigard Boulevard,Tigard,Oregon 97223,or by calling(503)639-4171. aforesaid county and state; that the —in the SensiLiuE_Lands__Review 4 5-0 01 3 n11rhaI1L$ridgo PUBLIC HEARING: ' a printed copy i ' I P py of which is hereto annexed, was published in the entire issue of said newspaper for ONE SENSITIVE LANDS REVIEW(SLR)954)013 DURHAM BRIDGE successive and A request for Sensitive Lands Review approval to allow the removal of an consecutive in the following issues: existing bridge over Fanno Creek and construct a new bridge. LOCA- TION: S.W. Durham Road crossing of Fanno Creek. APPLICABLE _September 14, 19 9 5 , REVIEW CRITERIA: Community Development Code Chapter 18.84. ZONE: I-P(Industrial Park). The Industrial Park zoning allows public agency administrative services,public support facilities,professional and --- administrative services,financial,insurance,and real estate services,busi- ness support services,manufacturing of finished products,packaging and _ _ processing,wholesale,storage,and distribution,among other uses. TT8306-Publish September 14, 1995. Subscribed and sworn to before me this 14th day of Septe 1• - — — 1 �� OFFICIAL SEAL . .4_ . -_ Ma ∎ , cam, 1 JACQUELINE ARELLAPJO Oregon �,;;� NO1ARY PUBLIC-OREGON Notary Public for Ore 9 COMMISSION NO. 023140 My Commission Expires: MY COMMISSION EXPIRES JUNE 9, 1997 AFFIDAVIT CITY OF TIGARD EXPENDITURE REQUEST This form is a multi-use form. Appropriate receipts and documentation must be attached to this form. Approved request due Tuesday 5 :00 PM to A/P for checks by Friday (week opposite Payroll only) . VENDOR NO. : DATE: — PAYABLE TO: L& t !T Yea-1474.„ REQUESTED BY: -4.114,1 '? Y.4;105- S c N i 1.')N Jxcs tql j31-7t tier /2 EL Sr- 7/ LD MISCELLANEOUS EXPENDITURES : Date I Description, Invoice No . , etc. Account No. Amount 10-acco-y.i c'40 $s 2 u, CO er- ÷ 2 4q 6 l�f Mileage $0 . 29 APPROPRIATION BALANCE: AS OF: APPROVALS: (IF UNDER $50) Section Manager/Professional Staff (IF UNDER $2500) Division Manager (IF UNDER $7500) Department Manager (IF UNDER $25000) City Administrator (IF OVER $25000) Local Contract Review Board r BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD, OREGON Regarding an application by the City of Tigard STAFF REPORT to construct a bridge over Fanno, located on SW SLR 95-0013 Durham Road. This development is within the 100-year floodplain. I. SUMMARY OF THE REQUEST CASE: Sensitive Lands Review SLR 95-0013 SUMMARY: A request for Sensitive Lands Review to construct a bridge over Fanno Creek, located on SW Durham Road. The bridge is located within the 100-year floodplain. APPLICANTS: W&H Pacific OWNER: Oregon Department of Transportation 8415 SW Nimbus Ave. 123 NW Flanders Beaverton, OR 97280 Portland, OR 97280 COMPREHENSIVE PLAN DESIGNATION: I-L (Light Industrial) ZONING DESIGNATION: I-P (Industrial Park) LOCATION: SW Durham Road crossing of Fanno Creek. East of SW 76th Avenue and west of SW 74th Avenue. APPLICABLE LAW: Community Development Code Chapter 18.84. Comprehensive Plan Policies 2.1.1, 3.1.1, 3.2.1, 3.2.2, 3.5.4, 4.2.1 STAFF RECOMMENDATION: Approval with Conditions. II. SITE AND VICLNITY INFORMATION A. Background Information: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel 1 No other development applications have been filed with the City of Tigard. B. Site Information and Proposal Description: The area of the proposed work is east of the intersection of SW Durham Road and SW 76th Avenue and west of the intersection of SW Durham Road and SW 74th Avenue. The proposed work is on both sides of the bridge within the SW Durham Road right- of-way. No structures are located in the area with exception of the existing bridge and roadway. The applicant proposes to remove the existing bridge and replace it with a new 100- foot clear span structure. The bridge construction includes removal and fill within a floodplain and placement of riprap for slope protection. The proposal requires a sensitive lands permit as construction will take place within the 100-year floodplain of Fanno Creek. C. Vicinity Information: The adjacent properties to the northwest are zoned R-12 (Residential, 12 units per acre), property to the northeast, south, and west are zoned I-P (Industrial Park). The surrounding area is developed with a mix of residential and industrial uses. HI. APPLICABLE APPROVAL STANDARDS AND REQUEST EVALUATION A. COMMUNITY DEVELOPMENT CODE: Chapter 18.84 contains regulations for lands within 100-year floodplains that are subject to Sensitive Lands Review. Sensitive Lands Review of proposed developments in these areas is intended to implement floodplain protection measures and to protect rivers, streams and creeks by minimizing erosion, promoting bank stability, maintaining and enhancing water quality and fish and wildlife habitat, and preserving scenic quality and recreational potential. Section 18.84.015(E) requires Hearings Officer approval for a Sensitive Lands Permit within the 100-year floodplain. Chapter 18.84.040(A) states that the appropriate approval authority shall approve or approve with conditions an application request within the 100-year floodplain in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page2 subsections 18.84.015(B) and (E) 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. The applicant has submitted a Certification of a "No-Rise" Determination for a proposed floodway development in conformance with the requirements of the Federal Emergency Management Agency. The appendix of the Certification tabulates the results of the applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway . Approximately 600 cubic yards of material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the floodway. 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 18.42 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards. The Comprehensive Plan designation for this parcel is I-L (Light Industrial). 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. The applicant's hydraulic analysis indicates maintenance of the zero-foot rise floodway. 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 Hearing Officer as untimely. The bridge will HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page3 incorporate two shoulders suitable for bicycle traffic. SW Durham Road is not designated as a proposed pedestrian/bicycle path as contained in the Tigard Parks Master Plan. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood. This proposal does not contain a plan for a pathway. The bikepath on the bridge will be above the elevation of the average annual flood. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. The applicant has states that a joint fill permit application for the Army Corps of Engineers and Division of State Lands is being processed. The applicant shall provide the City of Tigard a copy of that approved permit. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This proposal is on public right-of-way and does not contain property which could be be dedicated for pathway purposes. Chapter 18.84.040(C) states that the Director shall approve or approve with conditions an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria has been satisfied: 1. 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. The disturbance is the minimum disturbance necessary to accomodate the bridge replacement. The replacement will • increase the conveyance of the floodway along this section of the creek. 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. During construction, erosion and sediment control will be applied in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page4 accordance with Unified Sewerage Agency requirements. Slopes steeper than 2:1 will be stabilized with riprap. Construction will require an erosion control plan, approved by the Engineering Department, in conformance with Unified Sewerage Agency Resolution and Order 91-47. 3. The water flow capacity of the drainageway is not decreased. The hydraulic analysis concluded that the capacity of the drainageway, as well as the flooplain will not be decreased or negatively impacted. 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 18.100, Landscaping and Screening. The minimal amount of vegetation loss expected with construction will be replanted. Erosion control measures shall also be taken during construction. The applicants construction plans shall be reviewed and approved by the Engineering Department. 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. This requirement is not applicable as the drainageway will not be impaired by the bridge's construction. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. As discussed in the previous section, permits have been applied for and a copy of the permits will be sent to the City. 7. Where landform alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. As discussed in the previous section, dedication is not required. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pages Sensitive Lands: Section 18.84.040(B) states that the Director shall approve an application for sensitive lands permit on slopes of 25% or greater based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land use form alteration or development will not create site disturbances to an extent greater than that required for the use. As discussed in the previous section, the development is the minimum disturbance necessary. 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. This project does not change on-site or off-site drainage. As discussed in the previous section, erosion control measures will be taken in accordance with U.S.A. standards. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table; high shrink-swell capability; compressible/organic; and shallow depth-to-bedrock. The bridge is a 100 foot clear span design with two bents, one at each end, supported by pilings. The bridge span is supported at the top of the bank and will therefore be structurally stable. The banks of the creek shall be stabilized with riprap. 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 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. Chapter 18.84.040(D) states that the Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon findings that all of the following criteria have been satisfied: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page6 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland. The site is within a wetland area but it is not designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map, nor is it within 25 feet of such a wetland. 2. The extent and nature of the proposed landform alteration or development will not create site disturbances to an extent greater than the minimum required for the use. The disturbance is the minimum disturbance necessary to accomodate the bridge at the top of the bank. The area of work is on the creek banks. 3. Any encroachment or change in on-site or off-site drainage which would adversely impact wetland characteristics have been mitigated. This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. 5. All other sensitive lands requirements of this chapter have been met. Other sensitive lands requirements have been met as addressed in this report. 6. The provisions of Chapter 118.150, Tree Removal, shall be met. The applicant has not provide information regarding the presence or removal of trees. The applicant shall apply for a tree removal permit for removal of trees greater than 6 inches in diameter. 7. Physical Limitations and Natural Hazards, Floodplains and Wetlands, Natural Areas, and Parks, Recreation and Open Space policies of the HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel Comprehensive Plan have been satisfied. Applicable Comprehensive Plan Policies are satisfied as discussed, in Section B Comprehensive Plan Policies, below. B. COMPREHENSIVE PLAN POLICIES. 1. Policy 2.1.1 provides the City will assure that citizens will be provided an opportunity to participate in all phases of the planning and development review process. Policy 2.1.1 is satisfied because the applicant held a neighborhood meeting, notice of the application and public hearing on this item was provided to owners of property in the vicinity of the site and in a newspaper of general circulation. 2. Policy 3.1.1 provides that the City shall not allow development in areas meeting the definition of wetlands under chapter 18.26 or areas having slopes in excess of 25% except where it can be shown that established and proven engineering techniques related to a specific site plan will make the area suitable for the proposed development. (Note: This policy does not apply to lands designated as significant wetlands on the floodplain and wetlands map.) Policy 3.1.1 is satisfied because engineering techniques will make the site suitable for the proposed bridge and the applicable approval criteria for development in wetland areas have been satisfied. 3. Policy 3.2.1 provides that the City will prohibit any development within the 100-year floodplain that would result in any rise in elevation of the 100 year floodplain. Policy 3.2.1 is satisfied because this proposal will not result in any rise in the elevation of the 100-year flooplain. 4. Policy 3.2.2 provides that the City shall prohibit development in the floodway, except if the alteration preserves or enhances the function and maintenance of the zero foot rise floodway. Policy 3.2.2 is satisfied because this development will preserve the function and maintenance of the zero-foot rise floodway. 5. Policy 3.5.4 provides that the City provide an interconnected pedestrian/bikepath throughout the City. Policy 3.5.4 is satisfied because this bridge will accommodate a pedestrian/bikeway system. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page8 6. Policy 4.2.1 provides that all development within the Tigard Urban Planning Area shall comply with applicable federal, state and regional water quality standards. Policy 4.2.1 shall be satisified as construction shall comply with erosion control measures for the Tualatin River Basin. IV. AGENCY COMMENTS 1. The City of Tigard Engineering Department has reviewed the proposal and has provided the following comments: The CDC at 18.84.04A1,3 requires that the fill and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero- rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood". Moreover, the City's Master Drainage Plan recommends that "the existing zero-rise floodway...should be used along this reach to ensure an adequate flow area for the 100-year flood". The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway. 2. The City of Tigard Public Works Department, Building Division, Tigard Police Department, and Washington County Department of Land Use and Transportation have reviewed this proposal and have no objections to this proposal. 3. The Unified Sewerage Agency states that Fanno Creek is floodplain / floodway designated. Berm over waterline could cause violation of R&O 91-47/91-75, Chapter 6 sections 6.06 & 6.07. 4. GTE states that GTE has established work order 5460-7F001BP for the removal, temporary relocation and replacement of the telephone facilities across Fanno Creek on Durham Road. Please contact Jim Wieskamp, Senior Engineer-OSP, (620-5943) if you have any questions concerning the project. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page9 5.. No additional comments have been recieved. VI. CONCLUSION AND RECOMMENDATION Staff concludes that the proposed impacts to Sensitive Lands Areas comply with the applicable approval criteria for issuance of a Sensitive Lands Permit. Staff recommends the approval of SLR 95-0013 subject to the following conditions: 1. Copy of the joint fill permit application for the Army Corps of Engineers and Division of State Lands. 2. Tree removal permit for trees greater than 6 inches in diameter. 3. An erosion control plan shall be provided and reviewed by the Engineering Department. The plan shall conform with Unified Sewerage Agency R&O 91-47. THIS APPROVAL SHALL BE VALID FOR EIGHTEEN MONTHS OF THE EFFECTIVE DATE OF THIS DECISION. Prepared by: -d �" iDad- William D'Andrea Date Assistant Planner Approved by: Dick Bewersdorff Date Senior Planner HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page10 MEMORANDUM CITY OF TIGARD TO: Will D'Andrea FROM: Greg Berry-4W DATE : September 8 , 1995 SUBJECT: Request for Sensitive Lands Review (SLR) 95-13 Description: The applicant proposes to place approximately 600 cubic yards of fill material within the floodplain as part of the replacement of the Durham Road bridge at Fanno Creek. Findings : The CDC at 18 . 84 . 04A1, 3 requires that the fill and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero-rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood" . Moreover, the City' s Master Drainage Plan recommends that "the existing zero-rise floodway. . . should be used along this reach to ensure an adequate flow area for the 100-year flood" . The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge . The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant' s hydraulic analysis showing maintenance of the zero-foot rise floodway. Recommendation: The Engineering Department has no objection to approval of the request . APPROVED: Randall R. Woole S City Engineer 12MAR95 Run Time: 18:14:12 HHVercion: 6.52 Date File: fno dvp.hc2 Pepe 1 j THIS RUN EXECUTED 12HAR95 18:14:12 Ir :-2 WATER SURFACE PROFILES rsion 4.6.2; Hey 1991 • S IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HYDSEC TAPE 531 FILENAME #11 : ICFANHO3 FANNO CREEK R.H. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1980 REVISED OCTOBER 1983 STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD WEH PACIFIC VERIFICATION RUN - MARCH 1995 :ROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 SAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, B0, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON DISCHARGES . ;TART METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SODERLIND, STUDY MANAGER ENG. HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RH 0.02 TO RH 13.06 10 YEAR FLOOD FANNO CREEK CHECK INQ NINV 1DIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 EFFECTIVE FIS MODEL FANNO CREEK / Cross section 1.4 148.9 .895 ><1 .055 £ .180 - 136- • E132- • 1 • U 128: • a \ --7-------7------'\\ • • • • • • • t 124- i • o • n 128- • • 116- . 112 I I I I „ I I I I I , I I I I I , i I I I I i I I I I j , I I I i , I I I j I I I I I , I I , I , I , i I I T 1 l 8 40 88 128 160 208 240 268 320 368 488 440 488 Distance FANNO CREEK Cross section 1.43•145- -1 •.875 • .88 ->1 .I • 8 0 140- 5 • • 6 ' • 0 E 135- . 1 e u 130- • a : NINIIIIII t 125- • . . n 120. 0 115- . . 110 I I I I j I I I I I I I : I j I I I I ' I I I i I I I I ' I I I I , I I I I ' I I I I I I ,T 7 I I I I , 1 1 , l 1 1 160 240 320 400 488 568 648 7Z8 888 880 960 1848 1128 Distance EFFECTIVE Ff S MODEL FRNNO CREEK Cross section 1.44 145- •.875 • • RI f 6-.119-D-1•• 0 0 140- 5 0 0 E 135: . 1 _ 1138.125- , i I ' 0 120- 115- • 110 y , , . , 1 I , I , I I , , , I I , , , l , I , I I , , , , I , I I I I I , , , 1 , , , I I I , , , I , I „ I I , , , 160 248 320 400 488 560 640 720 808 888 960 1048 1120 Distance FANNO CREEK Cross section 1.47 140- .888 c� a 4 .180 0 136- 5 •. 2 E 132- • 1 u 128: •• a : • t 124- • i • 0 n 120- • (, • 116- . • 11Z , , I I I , , I I j , . I , I , I , I I I I , I I I , , I I I , I , I , , , , I , , , , I I , I , I I , I , I , I , I I 8 48 80 120 160 ZOO 240 280 328 360 408 440 488 Distance EFFECTIVE FIS MODEL.: / 31MAR95 Run Time: 10:51:58 F sion: 6.52 Data File: fno xtg.hc2 Page 1 / THIS RUN EXECUTED 31MAR95 10:51:58 C-2 WATER SURFACE PROFILES -lion 4.6.2; May 1991 S IS AN ARCHIVAL RUN ALL ..ATA AND RESULTS ARE SAVED ON UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HYDSEC TAPE 531 FILENAME #11 : ICFANNO3 FANNO CREEK R.M. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1980 REVISED OCTOBER 1983 STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD W&H PACIFIC MODIFICATIONS FOR EXISTING CONDITIONS - MARCH 1995 ROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 MAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 HAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON DISCHARGES . START METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SOOERLIND, STUDY MANAGER ENG. HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RH 0.02 TO RM 13.06 10 YEAR FLOOD FANNO CREEK !CHECK INO NINV IDIR STRT METRIC HVINS 0 WSEL FQ -1 2 0.002462 118.0 Existing Conditions Model /: 31MAR95 Run Time: 10:51:58 HMVersion: 6.52 Data Fite: fno_xtg.hc.. Page 3 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1.11 0 0 0 40 40 40 0 0.1 0 0 1 127.9 130.0 T 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 T 421 130.0 130.0 .. 0.100 0.095 0.050 1 1.14 18 185 240 120 140 130 2 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 2 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 2 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 2 128.0 425 130.0 450 140.0 500 0.090 0.110 0.055 1 1.32 21 60 122 410 960 960 2 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 2 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 2 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 2 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 . 134.0 332 0.095 0.100 0.055 1.40 18 175 250 420 310 400 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 2 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 2 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 '. 136.0 310 138.0 380 140.0 425 0.3 0.5 2 4 0.075 838 0.050 874 0.085 1000 0.060 1044 1.431 27 838 874 200 230 200 0 0 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 135.0 560 134.4 590 132.2 605 130.7 615 130.7 720 . 130.7 804 122.9 816 122.7 824 122.9 838 118.6 843 117.7 847 116.9 858 117.2 862 122.4 867 125.2 874 125.1 879 124.6 889 127.5 893 130.5 896 134 950 . 138 1000 140 1044 . 4 0.075 838 0.050 874 0.110 1000 0.060 1044 1.10 1.5 2.35 0 26.85 4 727 2.0 116.9 116.9 1.441 0 0 0 40 40 40 0 0 • 0 0 1 130.4 132.2 5 605 132.2 132.2 720 132.2 132.2 804 132.2 130.4 896 132.2 130.5 950 134 134 0.080 0.100 0.052 0.3 0.5 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 • Existing Conditions Model ,e: 31M.AR95 Run Time: 10:51:5E HMVercion: 6.52 Data File: fno_xtg.h Page 26 SECNO XICH ELTRD ELLC ELMIN a CVSEL CRflS EC 10•KS VCH AREA .01K 1.320 950.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 950.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 950.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 114.30 2923.00 126.11 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 rj S 1.431 200.00 0.00 0.00 116.90 2923.00 126.95 0.00 128.02 72.43 8.96 407.77 343.46 IS 1.431 200.00 0.00 0.00 116.90 3809.00 127.92 0.00 129.20 75.46 9.92 489.08 438.49 5 1.431 200.00 0.00 0.00 116.90 4193.00 128.29 0.00 129.65 76.84 10.30 521.17 478.32 1.431 200.00 0.00 0.00 116.90 5093.00 129.07 0.00 130.65 81.21 11.19 588.06 565.15 1.441 40.00 132.20 130.40 116.90 2923.00 127.27 0.00 128.24 62.20 8.54 434.08 370.61 1.441 40.00 132.20 130.40 116.90 3809.00 128.31 0.00 129.46 64.50 9.44 521.95 474.28 1.441 40.00 132.20 130.40 116.90 4193.00 128.70 0.00 129.94 65.71 9.81 556.38 517.27 1.441 40.00 132.20 130.40 116.90 5093.00 129.56 0.00 130.98 68.43 10.62 631.75 615.66 1.470 200.00 0.00 0.00 115.30 2923.00 128.66 0.00 128.90 12.43 4.69 1028.53 829.24 1.470 200.00 0.00 0.00 115.30 3809.00 129.91 0.00 130.17 12.31 5.03 1272.83 1085.52 1.470 200.00 0.00 0.00 115.30 4193.00 130.41 0.00 130.67 12.15 5.13 1399.96 1203.14 1.470 200.00 0.00 0.00 115.30 5093.00 131.49 0.00 131.76 11.55 5.28 1704.04 1498.42 1.530 490.00 0.00 0.00 115.70 2913.00 129.18 0.00 129.34 8.34 4.19 1540.65 1008.87 1.530 490.00 0.00 0.00 115.70 3792.00 130.43 0.00 130.59 7.56 4.30 1985.02 1379.46 1.530 490.00 0.00 0.00 115.70 4174.00 130.92 0.00 131.07 7.31 4.35 2163.14 1543.28 1.530 490.00 0.00 0.00 115.70 5069.00 131.98 0.00 132.13 6.90 4.47 2554.53 1929.39 2.000 2400.00 0.00 0.00 117.60 2913.00 130.67 0.00 130.78 5.12 3.58 2107.50 1286.90 2.000 2400.00 0.00 0.00 117.60 3792.00 131.77 0.00 131.87 4.62 3.63 2790.56 1764.79 2.000 2400.00 0.00 0.00 117.60 4174.00 132.21 0.00 132.31 4.44 3.64 3071.76 1981.02 2.000 2400.00 0.00 0.00 117.60 5069.00 133.18 0.00 133.27 4.09 3.68 3707.52 2506.75 2.010 620.00 0.00 0.00 118.30 2913.00 130.92 0.00 131.04 5.77 3.77 2169.86 1212.73 2.010 620.00 0.00 0.00 118.30 3792.00 131.98 0.00 132.09 5.26 3.83 2837.14 1653.88 2.010 620.00 0.00 0.00 118.30 4174.00 132.41 0.00 132.51 5.05 3.84 3117.06 1857.65 2.010 620.00 0.00 0.00 118.30 5069.00 133.36 0.00 133.45 4.64 3.87 3746.62 2354.25 2.410 2340.00 0.00 0.00 119.70 2913.00 132.59 0.00 132.80 13.45 4.59 1190.98 794.15 2.410 2340.00 0.00 0.00 119.70 3792.00 133.50 0.00 133.72 13.37 4.85 1520.51 1037.22 2.410 2340.00 0.00 0.00 119.70 4174.00 133.87 0.00 134.09 13.24 4.93 1663.36 1147.10 2.410 2340.00 0.00 0.00 119.70 5069.00 134.69 0.00 134.90 12.61 5.04 1996.06 1427.49 2.640 1200.00 0.00 0.00 120.80 2913.00 133.95 0.00 134.17 13.25 4.65 1004.99 800.12 2.640 1200.00 0.00 0.00 120.80 3792.00 134.94 0.00 135.22 16.03 5.32 1151.34 947.23 2.640 1200.00 0.00 0.00 120.80 4174.00 135.32 0.00 135.63 17.13 5.58 1211.16 1008.38 2.640 1200.00 0.00 0.00 120.80 5069.00 136.14 0.00 136.50 19.52 6.15 1343.98 1147.44 Existing Conditions Model — FANNO CREEK I Cross section 1.431 144- 4 •.875 . • > ': --.88 -a 0 B 140- 5 • 6 0 E 136- . • • 1 e u 132: • a . t •128 .� i 0 : •n 124- • 120- . 11.6 , 1 , , 1 , , , , 7 , , , , I 1 , , , 7 , 1 T ( 1 1 , 1 , 1 , , , 1 , , i 1 i I 1 i , l 1 , 1 , I 1 , I ( 1 , 1 I 1 160 248 3210 488 488 568 640 728 808 888 960 1848 1128 Distance FANNO CREEK Cross section 1.441 144- -- ..075 . Fl .118--> 1 • 140- 0 0 5 • 6/ • 0 E136- • 1 e • 132- — i� •128- o '• 1 11 124- , 4 1.: . II I128- . I 1 I 11- I 11.6 , , , , 1 , , , , 1 , , , I 1 I , , , 1 , , I , 1 , , I , I , , , , 1 , , 1 1 I , , I , 1 , 1 , , 1 I i , , I , , , 1 1 160 248 320 408 488 560 648 720 800 888 960 1848 1120 Distance CV t A: 31KAR9S Run Tiara: 10158:39 IIRVersimi,6.52 Oats Fite: fno_prop.hc2 °- r S Pape 26 (� r SECHO XLCK ELTRD ELLC ELKIH 0 'tVSEL JJJ���C���RIWS EC 10• S VCH 'AtREA .91K 1.320 960.00 0.00 0.00 113.10 2923.00' 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.0eP 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.03 0.00 0.00 113.10 4193.0D(Or 126.33.lot 0.00 126.62 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.000> 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.431 180.00 0.00 0.00 116.90 2923.00 126.78 0.00 127.41 35.73 7.36 498.67 489.02 1.431 180.00 0.00 0.00 116.90 3809.00 127.80 0.00 128.59 39.04 8.28 581.60 609.62 1.431 180.00 0.00 0.00 116.90 4193.00 128.19 0.00 129.05 40.58 8.66 613.73 658.25 1.431 180.00 0.00 0.00 116.90 5093.00 129.00 0.00 130.02 44.12 9.50 683.23 766.72 1.441 60.00 138.06 132.60 116.90 2923.00 127.05 0.00 127.63 31.53 7.06 520.84 520.54 1.441 60.00 138.06 132.60 116.90 3809.00 128.11 0.00 128.83 34.55 7.95 607.05 648.05 1.441 60.00 138.06 132.60 116.90 4193.00 128.51 0.00 129.30 35.83 8.31 641.14 700.50 1.441 60.00 138.06 132.60 116.90 5093.00 129.37 0.00 130.30 38.72 9.09 715.45 818.46 1.470 200.00 0.00 0.00 115.30 2923.00 127.80 0.00 128.14 18.83 5.47 865.13 673.66 1.470 200.00 0.00 0.00 115.30 3809.00 129.02 0.00 129.38 17.94 5.76 1098.01 899.41 1.470 200.00 0.00 0.00 115.30 4193.00 129.50 0.00 129.86 17.68 5.89 1191.41 997.21 1.470 200.00 0.00 0.00 115.30 5093.00 130.54 0.00 130.91 16.96 6.10 1436.12 1236.70 1.530 490.00 0.00 0.00 115.70 2913.00 128.57 0.00 128.79 11.72 4.77 1331.92 851.06 1.530 490.00 0.00 0.00 115.70 3792.00 129.76 0.00 129.97 10.47 4.87 1743.97 1171.85 1.530 490.00 0.00 0.00 115.70 4174.00 130.23 0.00 130.44 10.07 4.91 1913.14 1315.58 1.530 490.00 0.00 0.00 115.70 5069.00 131.24 0.00 131.45 9.35 5.00 2282.67 1657.50 2.000 2400.00 0.00 0.00 117.60 2913.00 130.47 0.00 130.60 5.78 3.76 1988.78 1211.39 2.000 2400.00 0.00 0.00 117.60 3792.00 131.48 0.00 131.60 5.38 3.85 2613.67 1634.35 2.003 2400.00 0.00 0.00 117.60 4174.00 131.89 0.00 132.01 5.22 3.89 2871.86 1826.21 2.000 2400.00 0.00 0.00 117.60 5069.00 132.78 0.00 132.90 4.90 3.95 3452.15 2289.72 2.010 620.00 0.00 0.00 118.30 2913.00 130.75 0.00 130.89 6.45 3.94 2063.47 1147.26 2.010 620.00 0.00 0.00 118.30 3792.00 131.73 0.00 131.86 6.05 4.05 2674.73 1541.17 2.010 620.00 0.00 0.00 118.30 4174.00 132.13 0.00 132.25 5.87 4.08 2932.84 1722.30 2.010 620.03 0.00 0.00 118.30 5069.00 133.00 0.00 133.12 5.50 4.14 3510.54 2162.07 2.410 2340.00 0.00 0.00 119.70 2913.00 132.56 0.00 132.77 13.68 4.62 1181.76 787.58 2.410 2340.03 0.00 0.00 119.70 3792.00 133 43 0.00 133.66 13.91 4.92 1493.68 1016.87 2.410 2340.00 0.00 0.00 119.70 4174.00 133.78 0.00 134.01 13.91 5.03 1627.33 1119.15 2.410 2340.00 0.00 0.00 119.70 5069.00 134.54 0.00 134.77 13.60 5.20 1935.58 1374.31 2.640 1200.00 0.00 0.00 120.80 2913.00 133.94 0.00 134.16 13.30 4.66 1003.50 798.64 2.640 1200.03 0.00 0.00 120.80 3792.00 134.91 0.00 135.19 16.18 5.34 1147.03 942.85 2.640 1200.00 0.00 0.00 120.80 4174.00 135.29 0.00 135.59 17.34 5.61 1205.37 1002.44 2.640 1200.00 0.00 0.00 120.80 5069.00 136.08 0.00 136.44 19.90 6.19 1333.65 1136.24 1A°.f4)Ul>1 V.A./ OA/ Proposed Conditions Model FANNO CREEK 144 Cross section 1.431 '1 .1368 CI �� 860 G- 140 -�~- • 0 5 • 8 E 136 • 1 e u 132 • a 128 0 n 124 . i 120 t• 116 imimtiiriii-, , , , i , lrrim , li i > Himii , , , iiiiiii . , , i , , , , i 160 240 320 400 480 560 640 720 800 888 960 1040 1120 Distance FANNO CREEK 144- Cross section 1.441 .068 C;1. 1 .060 C- 140 13 5 % • E 136- 1 \ • / • • ' v 132- \',---• a t 128- �, i ' • o n 124- • 128- • ;#,,• • . 116 ` '� 160 240 320 400 480 560 64B 720 800 880 960 1040 1120 Distance PROPOSED CONDITIONS MODEL / r 31MAR95 Run Time: 10:58:39 HMVersion: 6.52 , Data File: fno prop.hc2 Page 1 • — THIS RUN EXECUTED 31MAR95 10:58:39 .-2 WATER SI2FACE PROFILES sion 4.6.2; May 1991 IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED OH UNIT 96 HEC-2 PC FILE NAME : FANNC83C.DAT INPUT TAPE 400 FILENAME: FANNIC3T HYDSEC TAPE 531 FILENAME 011 : ICFANNO3 i FANNO CREEK R.H. 0 - 13.1 10-, 50-, 100-, AND 500-YEAR FLOODS i DURHAM, TIGARD, BEAVERTON AND WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY JUNE 1930 REVISED OCTOBER 1983 TUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD * W8H PACIFIC MODIFICATIONS FOR PROPOSED CONDITIONS AT DURHAM ROAD X-ING MARCH 1995 ******. :ROSS SECTICNS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON OPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 'APS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR FIELD SURVEYS BY USCE, PORTLAND DISTRICT ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON ISCHARGES TART METHOD : NORMAL DEPTH, SLOPE = 0.002462 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT GEORGE HOLMES, CHIEF, HYDROLOGY SECT. KEN SOOERLIND, STUDY MANAGER ENG. .*....* HYDRAULICS BY NORMAN ASSOCIATES FANNO CREEK, RM 0.02 TO RM 13.06 10 YEAR FLOOD FANNO CREEK • :CHECK IRO NINV IDIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 Proposed Conditions Model / / 31KAR95 Run Time: 10:58:39 'MVersion: 6.52 Data File: fno_prop.I Page 3 , /C c: 1-e...., 4" "t 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1.11 - 0 0 0 40 40 40 0 0.1 0 0 1 127.9 130.0 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 421 130.0 130.0 0.100 0.095 0.050 1.14 18 185 240 120 140 130 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 118.0 230 120.0 24D 122.0 280 124.0 385 128.0, 385 128.0 425 130.0 450 140.0 500 0.090 0.110 0.055 1.32 21 60 122 410 960 960 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 134.0 332 0.095 0.100 0.055 1.40 18 175 250 420 310 400 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 136.D 310 138.0 380 140.0 425 0.3 0.5 3 .06 839 0.050 865 .06 1044 1.431 25 839 865 180 210 180 0 0 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 138.06 560 138.06 590 138.06 605 138.06 615 138.06 720 138.06 799 131.0 799 120.3 814 120 839 118.6 843 117.7 847 116.9 858 117.2 862 120 865 120.1 868 132.6 897 138.06 897 138.06 950 138.06 1000 140 1044 3 .06 839 0.050 865 .06 1044 1.10 1.5 2.35 0 44.8 0 1074 1.5 116.9 116.9 1.441 0 0 0 60 60 60 0 0 0 0 1 132.6 138.06 5 605 138.06 138.06 720 138.06 138.06 799 138.06 132.6 897 138.06 132.6 950 138.06 138.06 0.080 0.100 0.052 0.3 0.5 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 Proposed Conditions Model 1V1 w di( Qyt ow\ CCITY OF TIGARD OREGON V j REQUEST FOR COMMENTS DATE: August 30, 1995 TO: Oregon Division of State Lands Executive Offices FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax: (503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 ➢ DURHAM BRIDGE A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard, Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. �..r Written comments provided below: a & / � (c. (i)) 44 (Please provide the following information) Name of Person(s) Commenting: �Z IPhone Number(s): 7 7f—j SCR 95-0013 8/30/95 DURHAM BRIDGE 09/11/95 16:14 $503 526 2538 TV FIRE MARSHAL IJ001/001 RECEIVED PLANNING SEP 12 1995 CITY or TIGARD OREGON REQUEST FOR COMMENTS DATE: August 30, 1995 SEP 11 1995 TO: Fire Marshall FIRE Agt11c�I1R1'S UFFICE FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax:(503)6B4-7297 RE: SENSITIVE LANDS REVIEW(SLR) 95-0013 ➢ DURHAM BRIDGE Q A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fenno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard,Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: 0<' We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: v v�f►i j *. (Please provide the following information) Name of Person(s)Comment". - AelF/-1,I Phone Number(s): S.A 95-0013 8/3a193 DURNRM BRIDGE A CITY OF TIGARD OREGON REQUEST FOR COMMENTS DATE: August 30, 1995 TO: Michael Miller, Operations Water Department FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone: (503)639-4171 Fax:(503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 ➢ DURHAM BRIDGE Q A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard, Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: V (Please provide the following information) Name of Person(s)Commenting: / PEE M/z- s,2_. IPhone Number(s): SLR 95-0013 8/30/95 DURHAM BRIDGE MEMORANDUM CITY OF TIGARD TO: Will D'Andrea FROM: Greg Berry40 DATE: September 8, 1995 SUBJECT: Request for Sensitive Lands Review (SLR) 95-13 Description: The applicant proposes to place approximately 600 cubic yards of fill material within the floodplain as part of the replacement of the Durham Road bridge at Fanno Creek. Findings : The CDC at 18 . 84 . 04A1, 3 requires that the fill and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero-rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood" . Moreover, the City' s Master Drainage Plan recommends that "the existing zero-rise floodway. . . should be used along this reach to ensure an adequate flow area for the 100-year flood" . The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant' s hydraulic analysis showing maintenance of the zero-foot rise floodway. Recommendation: The Engineering Department has no objection to approval of the request . APPROVED: Randall R. Woole S City Engineer PUBLIC HEARING NOTICE NOTICE IS HEREBY GIVEN THAT THE TIGARD HEARINGS OFFICER, AT A MEETING ON MONDAY, SEPTEMBER 25, 1995 AT 7:00 PM, IN THE TOWN HALL OF THE TIGARD CIVIC CENTER, - �l�j" 13125 SW HALL BOULEVARD, TIGARD, OREGON 97223 CITY OF TIGARD WILL CONSIDER THE FOLLOWING APPLICATION: OREGON FILE NO: SENSITIVE LANDS REVIEW (SLR) 95-0013 FILE TITLE: DURHAM BRIDGE APPLICANT: W&H Pacific OWNER: Oregon Department of Transportation 8405 SW Nimbus Avenue 123 NW Flanders Beaverton, OR 97280 Portland, OR 97209-4037 (503) 626-0455 (503) 731-8200 REQUEST A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. THE PUBLIC HEARING ON THIS MATTER WILL BE CONDUCTED IN ACCORDANCE WITH THE RULES OF CHAPTER 18.32 OF THE COMMUNITY DEVELOPMENT CODE AND RULES OF PROCEDURE ADOPTED BY THE TIGARD CITY COUNCIL AND AVAILABLE AT CITY HALL, OR RULES OF PROCEDURE SET FORTH IN CHAPTER 18.30. ASSISTIVE LISTENING DEVICES ARE AVAILABLE FOR PERSONS WITH IMPAIRED HEARING. THE CITY WILL ALSO ENDEAVOR TO ARRANGE FOR QUALIFIED SIGN LANGUAGE INTERPRETERS AND QUALIFIED BILINGUAL INTERPRETERS UPON REQUEST. PLEASE CALL (503) 639-4171, EXT. 320 (VOICE) OR (503) 684-2772 (TDD - TELECOMMUNICATIONS DEVICES FOR THE DEAF) NO LESS THAN ONE WEEK PRIOR TO THE HEARING TO MAKE ARRANGEMENTS. SLR 95-0013 8/30/95 DURHRM BRIDGE ANYONE WISHING TO PRESENT WRITTEN TESTIMONY ON THIS PROPOSED ACTION MAY DO SO IN WRITING PRIOR TO OR AT 'E PUBLIC HEARING. ORAL TE' AONY MAY BE PRESENTED AT THE PUBLIC HEARING. AT -1 . ; PUBLIC HEARING, THE HEARilvGS OFFICER WILL RECEIVE A STAFF REPORT PRESENTATION FROM THE CITY PLANNER; OPEN THE PUBLIC HEARING; AND INVITE BOTH ORAL AND WRITTEN TESTIMONY. THE HEARINGS OFFICER MAY CONTINUE THE PUBLIC HEARING TO ANOTHER MEETING TO OBTAIN ADDITIONAL INFORMATION, OR CLOSE THE PUBLIC HEARING AND TAKE ACTION ON THE APPLICATION. IF A PERSON SUBMITS EVIDENCE IN SUPPORT TO THE APPLICATION AFTER SEPTEMBER 5, 1995, ANY PARTY IS ENTITLED TO REQUEST A CONTINUANCE OF THE HEARING. IF THERE IS NO CONTINUANCE GRANTED AT THE HEARING, ANY PARTICIPANT IN THE HEARING MAY REQUEST THAT THE RECORD REMAIN OPEN FOR AT LEAST SEVEN DAYS AFTER THE HEARING. INCLUDED IN THIS NOTICE IS A LIST OF APPROVAL CRITERIA APPLICABLE TO THE REQUEST FROM THE TIGARD COMMUNITY DEVELOPMENT CODE AND THE TIGARD COMPREHENSIVE PLAN. APPROVAL OR DISAPPROVAL OF THE REQUEST BY THE HEARINGS OFFICER WILL BE BASED UPON THESE CRITERIA AND THESE CRITERIA ONLY. AT THE HEARING IT IS IMPORTANT THAT COMMENTS RELATING TO THE REQUEST PERTAIN SPECIFICALLY TO THE APPLICABLE CRITERIA LISTED. FAILURE TO RAISE AN ISSUE IN PERSON OR BY LETTER AT SOME POINT PRIOR TO THE CLOSE OF THE HEARING ON THE REQUEST OR FAILURE TO PROVIDE STATEMENTS OR EVIDENCE SUFFICIENT TO AFFORD THE DECISIONMAKER AN OPPORTUNITY TO RESPOND TO THE ISSUE PRIOR TO THE CLOSE OF THE HEARING ON THE REQUEST, PRECLUDES AN APPEAL TO THE LAND USE BOARD OF APPEALS BASED ON THAT ISSUE ALL DOCUMENTS AND APPLICABLE CRITERIA IN THE ABOVE-NOTED FILE ARE AVAILABLE FOR INSPECTION AT NO COST OR COPIES CAN BE OBTAINED FOR TWENTY-FIVE CENTS PER PAGE. AT LEAST SEVEN DAYS PRIOR TO THE HEARING, A COPY OF THE STAFF REPORT WILL BE AVAILABLE FOR INSPECTION AT NO COST, OR A COPY CAN BE OBTAINED FOR TWENTY-FIVE CENTS PER PAGE. FOR FURTHER INFORMATION PLEASE CONTACT THE STAFF PLANNER WILLIAM D'ANDREA AT (503) 639-4171, TIGARD CITY HALL, 13125 SW HALL BOULEVARD, TIGARD, OREGON. '410 • UNIFIED SEWERAGE AGENCY OF WASHINGTON COUNTY Date: SEPTEIlRF.R 13,, 1945 To: CITY 4F TIGARD PLANNING DEPARTMENT WILL D'ANDREA Fax Number: 684-7297 From: M. L. WALKER Telephone Number: 648-8678 Fax Number: (503) $40-3525 We are sending a total of 2 pages, including this cover sheet. If you do not receive this transmission in total, please call 648-8621. Thank you. 0970 rc?O/•19 155 North First Avenue,Suite 270 y Service,--..b Phone:503/648-9621 Hillsboro,Oregon 97124 FAX:503/840-3525 • A CITY OF TIOARD OREGON RiOUEST FOR COMMENTS DATE: August 30`1995 TO: Lee Walker, Unified Sewerade Aaencv/SWM Program FROM: City of Tigard Planning Depaitment STAFF CONTACT: Will D'Andrea (x3151 Phone:(503)639-4171 Fax:(503)684-7297 RE: SENSITIVE LANDS REVIEI (SLR) 95-0013 ➢ DURHAM BRIDGE < A request for Sensitive Land Review approval to allow the removal of an existing bridge over Fenno Creek and construct I new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, put Iic support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging Land processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. i i Attached is the Site Plan, Vicinity Mep and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in tl>ye near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13. 1991 You may use the space provided below or attach a separate letter to return your comments. If you are unable to repond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard,Tigard,OR 97223. iI PLEASE HECK THE FOLLOWING ITEMS THAT APPLY: $11 a have reviewed the proposal and hav4 no objections to it. — Phase contact of our office. _ Prase refer to the enclosed letter. X Written comments provided below: . ah • i _ .,* • . . i ,• • / . ,: ! - t4 GT . O. Ecsea✓? ov etc, iA.7 4ra 4 L./ K6 CoKL0 C 4US( V O447itob4 0 c 2 ? 0 q / - 47/q I d -?d Clila r 6 SA C.tEous to �06 # 6 _0, i 4 ! [(Please pfovide the following information) Name of P on(s)Commenting: i 4 w.*L ��� [PhoneNutbare); ` 4 q $ ` SLR(5.X13 O/MAAAr 1130/95 ■ A AL.Lk CITY OF TIGARD OREGON REQUEST FOR COMMENTS DATE: August 30, 1995 TO: Dave Scott, Building Official FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax:(503)684-7297 RE: SENSITIVE LANDS REVIEW(SLR) 95-0013 > DURHAM BRIDGE < A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13. 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard,Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: ./ We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: V (Please provide the following information) Name of Person(s)Commenting: V IPhone Number(s): v / SLR 95-0013 8/30/95 DURHAM BRIDGE SEP 08 '95 10:07AM WACO ' QND USE/TRANSP P.2/2 RECEIVED PLANNING ; CITY OF TIGARD OREGON SEP O 8 1995 REQUEST FOR COMMENTS DATE: Augusj 30, 1995 TO: Tam rrv. Wa. Co. Dept. of =,d Use&Transportation FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrej(x315) Phone:(S08)8394171 Fax:(503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 > DURHAM BRIDGE A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84, Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NE D YOUR rQMME TS BACK BY: Wednesday•September 13. 1995. You may use the space provided below or attach a separate letter to return your comments. jf you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard,Tigard,OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter, Written comments provided below: (Please provide the following information) Name of Person(s)Commenting: /l �1 I � Ph one Number(s): �1 SCR 95-0013 1/30/95 DURHAM BRIDGE CITY OF TIGARD OREGON REQUEST FOR COMMENTS RECEIVED PLANNING SEP © 71995 DATE: August 30, 1995 TO: Jim Wieskamp, General Telephone Engineering Department FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax: (503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 > DURHAM BRIDGE Q A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard, Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: GTE_E HAS (1-1S7-ADI_L t-}ED W D RK O R.DEP. 54(ao- Z FOOL l P FOR E REMOVAL) TEN Po2AR1 RELOCAT/Elf Ai4O 4X.EPLAc1_MEMY OF TELEPNokIE. c 4ci.L riES ACROSS FANNO CREEK ot-& DORNAIX ROAD . PLEASE C.LLntTACT W(F�ik.AMPI SENtDR. E1■1 ©SPA IF YOV NAME AN1`1 ©UESTDa15 CONIC-EA- r\ttf tc T(4-(5 PROTECT. I-lE EAN C E R-EQ,CNED a-r (.10-5343. v � (Please provide the following information) Name of Person(s)Commenting: ( 0-)`1- IPhone Number(s): (Q2.0 -5943 SLR 95-0013 8/30/95 DURHAM BRIDGE CITY OF TIGARD OREGON REQUEST FOR COMMENTS RECEIVED PLANNING S E P O 71995 DATE: August 30, 1995 TO: Brian Moore, Portland General Electric FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax:(503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 ➢ DURHAM BRIDGE < A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard,Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: 7 We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: V (Please provide the following information) Name of Person(s) Commenting: ? p„,63 f1 -Ce� IPhone Number(s): �c't$0 — 1.31 SLR 95-0013 8/30/95 DURHAM BRIDGE RECEIVED PLANNING CITY ARD OREGON REQUEST FOR COMMENTS SEP 0 7 1995 DATE: August 30, 1995 TO: John Acker, Operations Maintenance Supervisor FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax: (503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 y DURHAM BRIDGE A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard, Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: V � I(Please provide the following information) Name of Person(s)Commenting: I Phone Number(s): SLR 95-0073 8/30/95 DURHAM BRIDGE MAILING RECORDS A .ALA CITY OF TIGARD AFFIDAVIT OF MAILING OREGON STATE OF OREGON ) County of Washington ) ss. City of Tigard ) I, Patricia L. Lunsford, being first duly sworn/affirm, on oath depose and say: That I am a Senior Office Assistant for The City of Tigard, Oregon. That I served NOTICE OF PUBLIC HEARING FOR: That I served NOTICE OF DECISION FOR: City of Tigard Planning Director _ Tigard Planning Commission X Tigard Hearings Officer Tigard City Council A copy of the PUBLIC HEARING NOTICE/NOTICE OF DECISION/NOTICE OF FINAL ORDER of which is attached, marked Exhibit "A", was mailed to each named personx )aat the address ) s own •n the attached list(s), marked Exhibit "B", on the 5 7/ da /, _..dti.di_ i 995, and deposited in the United States Mail on the s •ay o _! _,API .ul.W 1995, postage prepaid. -r , . A 40,•J 'J,,,,*(i.:_....— .1■111111111110 4.......... ..14nGti /pared Notice / Subscribed and sworn/affirmed before me on the �, day of r , 191 +�. OFFICIAL SEAL jOi.a.ANA.,Y I I ', 4.4........,) I� , t..:,,, DIANE M JELDERKS NOTARY PUBLIC •I i REGON :, NOTARY PUBLIC•OREGON;� COMMISSION NO.046142 My Commission Expires: MY COMMISSION EXPIRES SEPTEMBER 07.1999 FILE INFO.: Q bi NAE(S): / 8�44-' CASE NO.(S):sa.. 1s-"-ocve TYPE OF NOTICE&DATE: e/p6% 4,..4.(/K� 4._ a, PUBLIC HEARING EXHI T 1 NOTICE NOTICE IS HEREBY GIVEN THAT THE TIGARD HEARINGS OFFICER, AT A MEETING ON MONDAY, SEPTEMBER 25, 1995 AT 7:00 PM, IN THE TOWN HALL OF THE TIGARD CIVIC CENTER, 'i'����i� 13125 SW HALL BOULEVARD, TIGARD, OREGON 97223 CITY OF TIGARD WILL CONSIDER THE FOLLOWING APPLICATION: OREGON FILE NO: SENSITIVE LANDS REVIEW (SLR) 95-0013 FILE TITLE: DURHAM BRIDGE APPLICANT: W&H Pacific OWNER: Oregon Department of Transportation 8405 SW Nimbus Avenue 123 NW Flanders Beaverton, OR 97280 Portland, OR 97209-4037 (503) 626-0455 (503) 731-8200 REQUEST A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. THE PUBLIC HEARING ON THIS MATTER WILL BE CONDUCTED IN ACCORDANCE WITH THE RULES OF CHAPTER 18.32 OF THE COMMUNITY DEVELOPMENT CODE AND RULES OF PROCEDURE ADOPTED BY THE TIGARD CITY COUNCIL AND AVAILABLE AT CITY HALL, OR RULES OF PROCEDURE SET FORTH IN CHAPTER 18.30. ASSISTIVE LISTENING DEVICES ARE AVAILABLE FOR PERSONS WITH IMPAIRED HEARING. THE CITY WILL ALSO ENDEAVOR TO ARRANGE FOR QUALIFIED SIGN LANGUAGE INTERPRETERS AND QUALIFIED BILINGUAL INTERPRETERS UPON REQUEST. PLEASE CALL (503) 639-4171, EXT. 320 (VOICE) OR (503) 684-2772 (TDD - TELECOMMUNICATIONS DEVICES FOR THE DEAF) NO LESS THAN ONE WEEK PRIOR TO THE HEARING TO MAKE ARRANGEMENTS. SLR 95-0013 8/30/95 DURHAM BRIDGE ANYONE WISHING TO PRESENT WRITTEN TESTIMONY ON THI' -3OPOSED ACTION MAY DO SO IN WRITING PRIOR TO OR Ai ,E PUBLIC HEARING. ORAL TE. .1v1ONY MAY BE PRESENTED AT THE PUBLIC HEARING. AT THE PUBLIC HEARING, THE HEARINGS OFFICER WILL RECEIVE A STAFF REPORT PRESENTATION FROM THE CITY PLANNER; OPEN THE PUBLIC HEARING; AND INVITE BOTH ORAL AND WRITTEN TESTIMONY. THE HEARINGS OFFICER MAY CONTINUE THE PUBLIC HEARING TO ANOTHER MEETING TO OBTAIN ADDITIONAL INFORMATION, OR CLOSE THE PUBLIC HEARING AND TAKE ACTION ON THE APPLICATION. IF A PERSON SUBMITS EVIDENCE IN SUPPORT TO THE APPLICATION AFTER SEPTEMBER 5, 1995, ANY PARTY IS ENTITLED TO REQUEST A CONTINUANCE OF THE HEARING. IF THERE IS NO CONTINUANCE GRANTED AT THE HEARING, ANY PARTICIPANT IN THE HEARING MAY REQUEST THAT THE RECORD REMAIN OPEN FOR AT LEAST SEVEN DAYS AFTER THE HEARING. INCLUDED IN THIS NOTICE IS A LIST OF APPROVAL CRITERIA APPLICABLE TO THE REQUEST FROM THE TIGARD COMMUNITY DEVELOPMENT CODE AND THE TIGARD COMPREHENSIVE PLAN. APPROVAL OR DISAPPROVAL OF THE REQUEST BY THE HEARINGS OFFICER WILL BE BASED UPON THESE CRITERIA AND THESE CRITERIA ONLY. AT THE HEARING IT IS IMPORTANT THAT COMMENTS RELATING TO THE REQUEST PERTAIN SPECIFICALLY TO THE APPLICABLE CRITERIA LISTED. FAILURE TO RAISE AN ISSUE IN PERSON OR BY LETTER AT SOME POINT PRIOR TO THE CLOSE OF THE HEARING ON THE REQUEST OR FAILURE TO PROVIDE STATEMENTS OR EVIDENCE SUFFICIENT TO AFFORD THE DECISIONMAKER AN OPPORTUNITY TO RESPOND TO THE ISSUE PRIOR TO THE CLOSE OF THE HEARING ON THE REQUEST, PRECLUDES AN APPEAL TO THE LAND USE BOARD OF APPEALS BASED ON THAT ISSUE ALL DOCUMENTS AND APPLICABLE CRITERIA IN THE ABOVE-NOTED FILE ARE AVAILABLE FOR INSPECTION AT NO COST OR COPIES CAN BE OBTAINED FOR TWENTY-FIVE CENTS PER PAGE. AT LEAST SEVEN DAYS PRIOR TO THE HEARING, A COPY OF THE STAFF REPORT WILL BE AVAILABLE FOR INSPECTION AT NO COST, OR A COPY CAN BE OBTAINED FOR TWENTY-FIVE CENTS PER PAGE. FOR FURTHER INFORMATION PLEASE CONTACT THE STAFF PLANNER WILLIAM D'ANDREA AT (503) 639-4171 , TIGARD CITY HALL, 13125 SW HALL BOULEVARD, TIGARD, OREGON. EXHIBIT B -2S112CD-01000 2S112CD-00900 HAMBACK, HAROLD MILDRED RIVAS, ERNEST ROSE 7735 SW DURHAM RD 16060 SW 76TH AVE TIGARD OR 97223 TIGARD OR 97223 2S113AB-00800 2S113BA-00100 DUNCAN, JOHN A AND JOHNSON FAMILY TRUST, THE JANICE LEE BY CARL H JOHNSON TR 16055 SW 74TH AVE 200 JAMES ST #407 TIGARD OR 97223 EDMONDS WA 98020 1 - FAX TRANSMITTAL- DATE: 9/8/95 TO: Sue Curran, Legals (fax) 620-3433 FROM: Patricia Lunsford, City of Tigard (Ph.) 639-4171 PLACE UNDER CITY OF TIGARD LOGO LEGAL NOTICE SECTION OF THE TIGARD TIMES The following will be considered by the Tigard Hearing's Officer on Monday, September 25, 1995 at 7:00 PM at Tigard Civic Center - Town Hall, 13125 SW Hall Boulevard, Tigard, Oregon. Both public, oral and written testimony is invited. The public hearing on this matter will be conducted in accordance with the rules of Chapter 18.32 of the Tigard Municipal Code, and rules and procedures of the Hearings Officer. Failure to raise an issue in person or by letter accompanied by statements or evidence sufficient to allow the hearing's authourity and all parties to respond, precludes an appeal, and failure to specify the criterion from the Community Development Code or Comprehensive Plan at which a comment is directed precludes an appeal based on that criterion. Further information may be obtained from the Planning Division at 13125 SW Hall Boulevard, Tigard, Oregon 97223 or by calling (503) 639-4171. PUBLIC HEARING: SENSITIVE LANDS REVIEW (SLR) 95-0013 ➢ DURHAM BRIDGE Q A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. TT PUBLISH DATE: September 14, 1995 4' CITY OF TIGARD AFFIDAVIT OF MAILING OREGON STATE OF OREGON ) County of Washington ) ss. City of Tigard ) I, Patricia L. Lunsford, being first duly sworn/affirm, on oath depose and say: That I am a Senior Office Assistant for The City of Tigard, Oregon. That I served NOTICE OF PUBLIC HEARING FOR: X That I served NOTICE OF DECISION FOR: City of Tigard Planning Director _ Tigard Planning Commission Tigard Hearings Officer Tigard City Council A copy of the PUBLIC HEARING NOTICE/NOTICE OF DECISION/NOTICE OF FINAL ORDER of which is attached, marked Exhibit "A", was mailed to each named person(s) fat the addres$p) s o on the attached list(s), marked Exhibit "B", on the ,' nom( day of (� 1995, and deposited in the United States Mail on the _ day of 1995, postage prepaid. 400,' 'repared Not - Subscribed and sworn/affirmed before me on the I at day of , 19S OFFICIAL SEAL ` ,4I IC)&tke- r ± DIANE M JELDERKS NOTARY PUBLI N� OREGON NOTARY PUBLIC-OREGON `� .0 COMMISSION NO 046142 My Commission Expires: MY COMMISSION EXPIRES SEPTEMBER 07,1999 FILE INFO.: e ,„, NAMEIS):�N�I" /�c� CASE NO.(S): 51.12 9.57-411.0 Oa !� C�/�. TYPE OF NOTICE&DATE: I7n( ©r 6 / /�- Ir�r5 i I EXHIBIT A BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD. OREGON Regarding an application by the City of Tigard for a ) FINAL ORDER sensitive lands review to alter land in a 1(X)-year tloodplain ) to replace the Durham Road brige over Fanno Creek ) SLR 95-(X)13 in the City of Tigard, Oregon ) (Durham Road Bridge) I. FINDINGS ABOUT SITE, SURROUNDINGS AND PUBLIC FACILITIES The hearings officer incorporates by reference the findings about the site and surroundings in Sections I and II of the City of Tigard Staff Report (the "Staff Report") and the agency comments in Section IV of the Staff Report. II. APPLICABLE APPROVAL STANDARDS AND RESPONSIVE FINDINGS The hearings officer incorporates by reference the approval standards and the findings in response to them in Section III of the Staff Report. III. HEARING AND RECORD 1. Hearings Officer Larry Epstein received testimony at the public hearing about this application on September 25, 1995. A record of that testimony is included herein as Exhibit A (Parties of Record), Exhibit B (Taped Proceedings), and Exhibit C (Written Testimony). These exhibits are filed at the Tigard City Hall. 2. At the hearing , city planner Will D'Andrea summarized the Staff Report. William Evans appeared on behalf of the applicant and accepted the Staff Report without objections or corrections. No one else appeared in person or in writing. IV. SITE VISIT BY HEARINGS OFFICER The hearings officer visited the site and surrounding area. He observed the existing access to and structures, vegetation, and grades on the site and adjoining property and the condition of the adjoining streets. V. CONCLUSION AND DECISION 1. The hearings officer concludes that the proposed Sensitive Lands Review complies with the applicable criteria and standards of the Community Development Code, provided development that occurs after this decision complies with applicable local, state. and federal laws. 2. In recognition of the findings and conclusions contained herein, and incorporating the Staff Report and other reports of effect agencies and public testimony and exhibits received in this matter, the Hearings Officer hereby approves SLR 95-0013, subject to the following conditions of approval: a. Before the city authorizes development permitted by this decision, the applicant shall: (1) Submit to the city a copy of the permit issued by the US Army Corps of Engineers and Oregon Division of State Lands for the development. or evidence that such permits are not required by those agencies: and Hearings Officer Final Order SLR 95-0013 (Durham Road Bridge) Page 1 (2) Submit to the city engineering division an erosion control plan consistent with Unified Sewerage Agency R & O 91-47 and receive approval of that plan. h. Before the applicant removes trees with a diameter of more than 6 inches, the applicant shall submit to the city an application for a tree removal permit and shall receive approval of that application. DATE. this 29th day of September, 1995. 410"AatAllreil .P44. Larry Epstein, IC7 City of T'and ' e. 'n s Officer Hearings Officer Final Order SLR 95-0013 (Durham Road Bridge) Page 2 BEFORE THE LAND USE HEARINGS OFFICER FOR THE CITY OF TIGARD, OREGON Regarding an application by the City of Tigard STAFF REPORT to construct a bridge over Fanno, located on SW SLR 95-0013 Durham Road. This development is within the 100-year floodplain. I. SUMMARY OF THE REQUEST CASE: Sensitive Lands Review SLR 95-0013 SUMMARY: A request for Sensitive Lands Review to construct a bridge over Fanno Creek, located on SW Durham Road. The bridge is located within the 100-year floodplain. APPLICANTS: W&H Pacific OWNER: Oregon Department of Transportation 8415 SW Nimbus Ave. 123 NW Flanders Beaverton, OR 97280 Portland, OR 97280 COMPREHENSIVE PLAN DESIGNATION: I-L (Light Industrial) ZONING DESIGNATION: I-P (Industrial Park) LOCATION: SW Durham Road crossing of Fanno Creek. East of SW 76th Avenue and west of SW 74th Avenue. APPLICABLE LAW: Community Development Code Chapter 18.84. Comprehensive Plan Policies 2.1.1, 3.1.1. 3.2.1. 3.2.2. 3.5.4, 4.2.1 STAFF RECOMMENDATION: Approval with Conditions. II. SITE AND VICINITY INFORMATION A. Background Information: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE ! ODOT Pagel No other development applications have been tiled with the City of Tigard. B. Site jjiformation and Proposal Description: The area of the proposed work is east of the intersection of SW Durham Road and SW 76th Avenue and west of the intersection of SW Durham Road and SW 74th Avenue. The proposed work is on both sides of the bridge within the SW Durham Road right- of-way. No structures are located in the area with exception of the existing bridge and roadway. The applicant proposes to remove the existing bridge and replace it with a new 100- foot clear span structure. The bridge construction includes removal and fill within a floodplain and placement of riprap for slope protection. The proposal requires a sensitive lands permit as construction will take place within the 100-year floodplain of Fanno Creek. C. Vicinity Information: The adjacent properties to the northwest are zoned R-12 (Residential, 12 units per acre), property to the northeast, south, and west are zoned I-P (Industrial Park). The surrounding area is developed with a mix of residential and industrial uses. III. APPLICABLE APPROVAL STANDARDS AND REQUEST EVALUATION A. COMMUNITY DEVELOPMENT CODE: Chapter 18.84 contnins regulations for lands within 100-year tloodplains that are subject to Sensitive Lands Review. Sensitive Lands Review of proposed developments in these areas is intended to implement floodplain protection measures and to protect rivers, streams and creeks by minimizing erosion, promoting bank stability, maintaining and enhancing water quality and fish and wildlife habitat, and preserving scenic quality and recreational potential. Section 18.84.015(E) requires Hearings Officer approval for a Sensitive Lands Permit within the 100-year floodplain. Chapter 18.84.040(A) states that the appropriate approval authority shall approve or approve with conditions an application request within the 100-year floodplain in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Paget subsections 18.84.015(B) and (E) 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. The applicant has submitted a Certification of a "No-Rise" Determination for a proposed floodway development in conformance with the requirements of the Federal Emergency Management Agency. The appendix of the Certification tabulates the results of the applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway . Approximately 600 cubic yards of material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the floodway. 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 18.42 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards. The Comprehensive Plan designation for this parcel is I-L (Light Industrial). 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. The applicant's hydraulic analysis indicates maintenance of the zero-foot rise floodway. 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 Hearing Officer as untimely. The bridge will HEARLNGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Paee3 incorporate two shoulders suitable for bicycle traffic. SW Durham Road is not designated as a proposed pedestrian/bicycle path as contained in the Tigard Parks Master Plan. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood. This proposal does not contain a plan for a pathway. The bikepath on the bridge will be above the elevation of the average annual flood. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board. Division of State Lands approvals shall be obtained. The applicant has states that a joint fill permit application for the Army Corps of Engineers and Division of State Lands is being processed. The applicant shall provide the City of Tigard a copy of that approved permit. 7. Where land form alterations and/or development are allowed within and adjacent to the 100 year floodplain, the City shall require the dedication of sufficient open land area within and adjacent to the floodplain in accordance with the comprehensive plan. This proposal is on public right-of-way and does not contain property which could be be dedicated for pathway purposes. Chapter 18.84.040(C) states that the Director shall approve or approve with conditions an application request for a sensitive lands permit within drainageways based upon findings that all of the following criteria has been satisfied: 1. 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. The disturbance is the minimum disturbance necessary to accomodate the bridge replacement. The replacement will increase the conveyance of the floodway along this section of the creek. -. 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. During construction, erosion and sediment control will be applied in HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page4 accordance with Unified Sewerage Agency requirements. Slopes steeper than 2:1 will be stabilized with riprap. Construction will require an erosion control plan, approved by the Engineering Department, in conformance with Unified Sewerage Agency Resolution and Order 91-47. 3. The water flow capacity of the drainageway is not decreased. The hydraulic analysis concluded that the capacity of the drainageway, as well as the flooplain will not be decreased or negatively impacted. 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 18.100, Landscaping and Screening. The minimal amount of vegetation loss expected with construction will be replanted. Erosion control measures shall also be taken during construction. The applicants construction plans shall be reviewed and approved by the Engineering Department. S. 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. This requirement is not applicable as the drainageway will not be impaired by the bridge's construction. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. As discussed in the previous section. permits have been applied for and a copy of the permits will be sent to the City. 7. Where landform alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require rite 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. As discussed in the previous section. dedication is not required. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT PageS Sensitive Lands: Section 18.84.040(B) states that the Director shall approve an application for sensitive lands permit on slopes of 25% or greater based upon findings that all of the following criteria have been satisfied: 1. The extent and nature of the proposed land use form alteration or development will not create site disturbances to an extent greater than that required for the use. As discussed in the previous section, the development is the minimum disturbance necessary. 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 propem. This project does not change on-site or off-site drainage. As discussed in the previous section, erosion control measures will be taken in accordance with U.S.A. standards. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table; high shrink-swell capability; compressible/organic; and shallow depth-to-bedrock. The bridge is a 100 foot clear span design with two beats, one at each end, supported by pilings. The bridge span is supported at the top of the bank and will therefore be structurally stable. The banks of the creek shall be stabilized with riprap. 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 13.100, Landscaping and Screening. As previously discussed. the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken during construction. Chapter 18.84.040(D) states that the Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon findings that all of the following criteria have been satisfied: HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE i ODOT Page6 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland. The site is within a wetland area but it is not designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map, nor is it within 25 feet of such a wetland. The extent and nature of the proposed landform alteration or development will not create site disturbances to an extent greater than the minimum required for the use. The disturbance is the minimum disturbance necessary to accomodate the bridge at the top of the bank. The area of work is on the creek banks. 3. Any encroachment or change in on-site or off-site drainage which would adversely impact wetland characteristics have been mitigated. This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening. As previously discussed, the minimal amount of vegetation loss expected with construction will be revegetated. Erosion control measures shall also be taken durine construction. 5. All other sensitive lands requirements of this chapter have been met. Other sensitive lands requirements have been met as addressed in this report. 6. The provisions of Chapter 118.150, Tree Removal, shall be met. The applicant has not provide information regarding the presence or removal of trees. The applicant shall apply for a tree removal permit for removal of trees Treater than 6 inches in diameter. 7. Physical Limitations and Natural Hazards, Floodplains and Wetlands, Natural Areas. and Parks, Recreation and Open Space policies of the HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Pagel Comprehensive Plan have been satisfied. Applicable Comprehensive Plan Policies are satisfied as discussed, in Section B Comprehensive Plan Policies, below. B. CONIPREHENSIVE PLAIN POLICIES. 1. Policy 2.1.1 provides the City will assure that citizens will be provided an oppomtnity to participate in all phases of the planning and development review process. Policy 2.1.1 is satisfied because the applicant held a neighborhood meeting, notice of the application and public hearing on this item was provided to owners of property in the vicinity of the site and in a newspaper of general circulation. 2. Policy 3.1.1 provides that the City shall not allow development in areas meeting the definition of wetlands under chapter 18.26 or areas having slopes in excess of 25% except where it can be shown that established and proven engineering techniques related to a specific site plan will make the area suitable for the proposed development. (Note: This policy does not apply to lands designated as significant wetlands on the floodplain and wetlands map.) Policy 3.1.1 is satisfied because engineering techniques will make the site suitable for the proposed bridge and the applicable approval criteria for development in wetland areas have been satisfied. 3. Policy 3.2.1 provides that the City will prohibit any development within the 100-year floodplain that would result in any rise in elevation of the 100-year floodplain. Policy 3.2.1 is satisfied because this proposal will not result in any rise in the elevation of the 100-year tlooplain. 4. Policy 3.2.2 provides that the City shall prohibit development in the floodway, except if the alteration preserves or enhances the function and maintenance of the zero foot rise floodway. Policy 3.2.2 is satisfied because this development will preserve the function and maintenance of the zero-foot rise floodway. Policy 3.5.4 provides that the City provide an interconnected pedestrian/bikeoath throughout the City. Policy 3.5.4 is satisfied because this bridge will accommodate a pedestrian/bikeway system. HEARINGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT PaaeS 6. Policy 4.?.1 provides that all development within the Tigard Urban Planning Area shall comply with applicable federal, state and regional water quality standards. Policy 4.2.1 shall be satisified as construction shall comply with erosion control measures for the Tualatin River Basin. W. AGENCY COMMENTS 1. The City of Tigard Engineering Department has reviewed the proposal and has provided the following comments: The CDC at 18.84.04A1,3 requires that the till and bridge structure "shall preserve or enhance the floodplain storage function and maintenance of the zero- rise floodway shall not result in any narrowing of the floodway boundary" and "will not result in any increase in the water surface elevation of the 100-year flood". Moreover, the City's Master Drainage Plan recommends that "the existing zero-rise tloodway...should be used along this reach to ensure an adequate flow area for the 100-year flood". The applicant has submitted a Certification of a "No-Rise" Determination for a Proposed Floodway Development in conformance with the requirements of the Federal Emergency Management Agency. This Certification demonstrates compliance with the CDC and Master Drainage Plan by mitigating the placement of fill by removing an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed bridge will remove obstructions to flow and improve conveyance of the floodway. The appendix of the Certification tabulates the results of the Applicant's hydraulic analysis showing maintenance of the zero-foot rise floodway. '_. The City of Tigard Public Works Department. Building Division. Tigard Police Department. and Washington County Department of Land Use and Transportation have reviewed this proposal and have no objections to this proposal. 3. The Unified Sewerage Agency states that Fanno Creek is floodplain / tloodway designated. Berm over waterline could cause violation of R&O 9147/91-75, Chapter 6 sections 6.06 & 6.07. 4. GTE states that GTE has established work order 5460-7F001BP for the removal. temporary relocation and replacement of the telephone facilities across Fanno Creek on Durham Road. Please contact Jim Wieskamp. Senior Engineer-OSP, (620-5943) if you have any questions concerning the project. HEARLLNGS OFFICER - SLR 95-0013 - DURHAM BRIDGE / ODOT Page9 5.. No additional comments have been recieved. VI. CONCLUSION AND RECOMMENDATION Staff concludes that the proposed impacts to Sensitive Lands Areas comply with the applicable approval criteria for issuance of a Sensitive Lands Permit. Staff recommends the approval of SLR 95-0013 subject to the following conditions: 1. Copy of the joint fill permit application for the Army Corps of Engineers and Division of State Lands. 2. Tree removal permit for trees greater than 6 inches in diameter. 3. An erosion control plan shall be provided and reviewed by the Engineering Department. The plan shall conform with Unified Sewerage Agency R&O 91-17. THIS APPROVAL SHALL BE VALID FOR EIGHTEEN MONTHS OF THE EFFECTIVE DATE OF THIS DECISION. � Prepared by: a4��.. P ! William D'Andrea Date Assistant Planner Approved by: Dick Bewersdorff Date Senior Planner HEARINGS 01-1-ICER - SLR 95-0013 - DURHAM BRIDGE i ODOT Page 10 V ' 1dJC7 DNINNV1d GHV I1 JO A1I0 i , co 0 H . s.0z...1 NVId Z D • SM.7Y/0 e"! anorJ , �fl q % ysrui3 Di,i wOa/S si.n!/' 'I3. 8 R ; U tj• / .41 --t ; �. 94,/47 s/Xz �°° ' I 4 Q•�°3 '•_°'-.1 • .•bo 4. / r--..-41, _v. i• /51719f/ /3, o &ri 73, ' 1 M.zrtoo is N ■ _ ,:s. _ Z 0-Q: a � q ti �� Oil- - - - ry.a rotor] -�- - ;v.- -�!7_a* F _4./yoy � .,o Cl. ""zztr s o / ' .3 id/w3 sm, QO co:"is obdrj/OOL SL10 ^ 1. (- :s, Pune/Pr..71 'Purl/Oui \ _#--.02 sler:'g Ir1,7-"-1.7_0.001 .t;0Z' CL--11 III . ; II 1 Bonito % Rd I o ' Qi 1 1/r . Q e Cm I Ld 1 N Z). o' Q 4Gd c(• 01 - `'' 6. /tg (5 Oonccm Rd. lig Z ve" I s < PROJECT a �� R.) g°° ga' ....1 � d ce CL ri, cl VI 9,d. ,i i a 1 777 ,40) ,;) (.5 / 1.-- . SEC.12, T.2S., R.1 W., W.M. Li. I LOCATION MAP O . NO SCALE > —' U 111 VICINITY a CASE NO. EXHIBIT 1 Y 1 � � 7 SLR 95-0013 DURHAM BRIDGE 1 1 (Farm Creek) 1 II : EXHIBIT B W & H Pacific 8405 SW Nimbus Avenue Beaverton, OR 97280 Oregon Department of Transportation 123 NW Flanders Portland, OR 97209-4037 SLR 95-0013 DURHAM BRIDGE HEARING'S OFFICER FINAL ORDER (Page 1/1) CITY OF TIGARD OREGON REQUEST FOR COMMENTS DATE: August 30, 1995 TO: Per Attached FROM: City of Tigard Planning Department STAFF CONTACT: Will D'Andrea (x315) Phone:(503)639-4171 Fax: (503)684-7297 RE: SENSITIVE LANDS REVIEW (SLR) 95-0013 ➢ DURHAM BRIDGE A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. Attached is the Site Plan, Vicinity Map and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decision will be rendered on the proposal in the near future. If you wish to comment on this application, WE NEED YOUR COMMENTS BACK BY: Wednesday-September 13, 1995. You may use the space provided below or attach a separate letter to return your comments. If you are unable to respond by the above date, please phone the staff contact noted above with your comments and confirm your comments in writing as soon as possible. If you have any questions, contact the Tigard Planning Department, 13125 SW Hall Boulevard, Tigard, OR 97223. PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: We have reviewed the proposal and have no objections to it. Please contact of our office. Please refer to the enclosed letter. Written comments provided below: 44 (Please provide the following information) Name of Person(s)Commenting: IPhone Number(s): SLR 95-0013 8/30/95 DURHAM BRIDGE 1 I REQUEST FOR COMMEI. . 3 ' NOTIFICATION UST FOR LAND USE &DEVELOPMENT APPUCATIONS ICITIZEN INVOLVEMENT TEAMS — {circl�orysi} — i CIT Area: (N)i�,(91(C) " Placed for review In Ubrary PT Book " CPO NO. CITY DEPARTMENTS _BLDG. DEPTJDave Scott, wna.Official POLICE DEPTJKeIIy Jennings _V PERATIONS/JOhn Acker,Malt Sow _ CITY ADMINJCathy Wheatley,mynas-. G.DEPTJMIchael Anderson, oer-Ravlawem. _COM.DEV.DEPTJDS.T.'S _ADV.PLNCJCaroI Landsman, Senior WATER DEPT./Michael n Michael Miller,ooe<aotn mgr. SPECIAL DISTRICTS /FIRE MARSHALL ,iNIFIED SEWERAGE AGENCY _TUALATIN VALLEY WATER DIST. Gene Birchell SWM Program/Lee Walker PO Box 745 Wa.County Flre District 155 N. First Street Beaverton, OR 97075 (pick-up box) Hillsboro, OR 97124 } AFFECTED JURISDICTIONS WA.CO.DEPT.OF LAND USE &TRANSP. _METRO AREA BOUNDARY COMMISSION —METRO-GREENSPACES 150 N.First Avenue 800 NE Oregon St. /16, Suite 540 Mel Hule (CPA'S/ZOA's) Hillsboro, OR 97124 Portland, OR 97232-2109 600 NE Grand Avenue Portland, OR 97232-2736 Brent Curtis(CPA's) STATE HIGHWAY DIVISION _Jim Tice(IGA'S) Sam Hunaidi DOT/REGION 1 _Mike Borreson (Engineer) PO Box 25412 Laurie Nicholson/Trans. Planning _Scott King (CPA's) Portland, OR 97225-0412 123 N.W. Flanders •olom Harry(Current Planning App's) Portland, OR 97209-4037 Lynn Bailey(Current Planning App's) _OREGON DLCD (CPA's/ZOA's) 1175 Court Street,N.E. _OTHER i _CITY OF BEAVERTON Salem,OR 97310-0590 1 Larry Conrad, Senior Planner _CITY OF PORTLAND PO Box 4755 _CITY OF DURHAM Planning Director Beaverton, OR 97076 City Manager 1120 SW 5th PO Box 23483 Portland, OR 97204 1 _CITY OF KING CITY Tigard, OR 97281-3483 City Manager _CITY OF LAKE OSWEGO 15300 SW 116th _CITY OF TUALATIN City Manager King City, OR 97224 PO Box 369 PO Box 369 Tualatin, OR 97062 Lake Oswego,OR 97034 SPECIAL AGENCIES . ZENERAL TELEPHONE ELECTRIC _• PORTLAND GENERAL ELECTRIC _COLUMBIA CABLE CO. Jim Wieskamp, Engineering Brian Moore Craig Eyestone PO Box 23416 14655 SW Old Scholls Ferry Rd. 14200 SW Brigadoon Court Tigard, OR 97281-3416 Beaverton, OR 97007 Beaverton, OR 97005 W NATURAL CAS CO. Phone:Esau 721-3w _METRO AREA COMMUNICATIONS _TRI-MET TRANSIT DEVELOPMENT Scott Palmer Fu 13033 721-2502 Jason Hewitt Kim Knox, Project Planner 220 NW Second Avenue Twin Oaks Technology Center 710 NE Holladay Street Portland, OR 97209-3991 1815 NW 169th Place S-6020 Portland, OR 97232 Beaverton, OR 97006-4886 TCI CABLEVISION OF OREGON _US WEST COMMUNICATIONS _SOUTHERN PACIFIC TRANS.CO. Linda Peterson Pete Nelson Duane M.Forney,PLS-Project Eng. 3500 SW Bond Street 421 SW Oak Street 800 NW 6th Ave., Room 324 Portland, OR 97201 Portland, OR 97204 Union Station Portland, OR 97209 STATE AGENCIES FEDERAL AGENCIES _AERONAUTICS DIVISION(ODOT) 'IVISION OF STATE LANDS _US POSTAL SERVICE _COMMERCE DEPT.-M.H. PARK _FISH &WILDLIFE Randy Hammock, Growth Cord. _PUC _DOGAMI Cedar Mill Station _DEPT.OF ENVIRONMENTAL QUALITY Portland, OR 97229-9998 VU.S. ARMY CORPS.OF ENGINEERS _OTHER h:voalntwtty lcnoncrost i APPLICANT MATERIALS • Nof CITY OF TIGARD, OREGON SENSITIVE LANDS APPLICATION CITY OF TIGARD, 13125 SW Hall, PO Box 23397 Tigard, Oregon 97223 - (503) 639-4171 FOR STAFF USE ONLY CASE NO. 9 S -� i3 OTHER CASE NO'S: C • I RECEIPT NO. q�" Lc��i qty APPLICATION ACCEPTED BY: I DATE: �'`Z?/d9S` 1. GENERAL INFORMATION I Application elements submitted: PROPERTY ADDRESS/LOCATION Durham Road at Fanno Creek I (A) Application form (1) crossing I (B) Owner's signature/written TAI MAP AND TAX LOT NO. 'L' I ( (t' °°I Cro(7767t) I authorization "E'S/ 17/A-46-0-016 i (C) Title transfer instrument (1) SITE SIZE N/A (D) Assessor's map (1) OWNER/DEED HOLDER* ODOT I (E) Plot plan (pre-app checklist) ADDRESS 123 NW Flanders PHONE 731-8200 I (F) Applicant's statement Portland, Oregon 97209-403T CITY ZIP I (pre-app checklist) APPLICANT* W&H Pacific, Inc. I (G) List of property owners and ADDRESS 8405 S.W. Nimbus Ave. PHONE 626-0455 I addresses within 250 feet (1) CITY Beaverton, Oregon ZIP 97280 I >C(H) Filing fee ($520) *When the owner and the applicant are different people, the applicant must be the purchaser of record or'a leasee in possession with written authorization DATE DETERMINED TO BE COMPLETE: from the owner or an agent of the owner with written authorization. The owner(s) must sign this application in the space provided on page two or FINAL DECISION DEADLINE: submi't a written authorization with this application. COMP. PLAN/ZONE DESIGNATION: 2. PROPOSAL SUMMARY The owners of record of the subject property request a Sensitive Lands Permit to allow Widening of Durham Road, N.P.O. Number: Removal of existing Fanno Creek Bridge, Approval Date: Construction of new bridge. Final Approval Date: Planning 0523P/13P Engineering Rev'd: 3/88 Cl• 1 Y OF TIGARD -- RECEIPT OF RHYMEN I F&L.:F I P1 NU. :4t)- 6909,4 WELK 1i1►11(11\I : fm0. V)b) NAME a W & H PACIF LC, INC. (:1.1!;11 11W ul IN I 0. 00 ADDRESS : 8405 SW NIMBUS AVE. I'l l r N! Pd I I'1 a 11-. : OW 1 0/9 HEAVERTON OR F'A , 1W ) 1 I h IHJ PURPOSE OF PAYMEN1 NMUUN I PAID PL PLSE ` 1 It ! I I '�.i t II V11 I \.))6; H9ç+B l;ti 520. 00 ` V TWANY1 6/0 691Wr kr -Af.sil Jet ,�' A) 0 6 • ' ' i le), i , \-:_?5 JOB NUMBER 4-0204•-1302 ,` I ■ 10 l NI AMOUNT PAID 1) — -• — --) `,r_'0. Vu I M4 C • A CITY OF TIGARD OREGON PROPOSAL DESCRIPTION FILE NO: SENSITIVE LANDS REVIEW (SLR) 95-0013 FILE TITLE: DURHAM BRIDGE APPLICANT: W&H Pacific OWNER: Oregon Department of Transportation 8405 SW Nimbus Avenue 123 NW Flanders Beaverton, OR 97280 Portland, OR 97209-4037 (503) 626-0455 (503) 731-8200 REQUEST: A request for Sensitive Lands Review approval to allow the removal of an existing bridge over Fanno Creek and construct a new bridge. LOCATION: SW Durham Road crossing of Fanno Creek. ZONE: I-P (Industrial Park). The Industrial Park zoning allows public agency administrative services, public support facilities, professional and administrative services, financial, insurance, and real estate services, business support services, manufacturing of finished products, packaging and processing, wholesale, storage, and distribution, among other uses. APPLICABLE REVIEW CRITERIA: Community Development Code Chapter 18.84. CIT: South & East CIT FACILITATOR: List Available Upon Request PHONE NUMBER: (503) DECISION MAKING BODY STAFF DECISION PLANNING COMMISSION DATE OF HEARING: TIME: 7:30 X HEARINGS OFFICER DATE OF HEARING: 9/25/95 TIME: 7:00 CITY COUNCIL DATE OF HEARING: TIME: 7:30 RELATIVE COMPONENTS AVAILABLE FOR VIEWING IN THE PLANNING DIVISION X VICINITY MAP LANDSCAPING PLAN NARRATIVE X ARCHITECTURAL PLAN SITE PLAN X OTHER STAFF CONTACT: Will D'Andrea (503) 639-4171 x315 SENSITIVE LANDS APPLICANTS STATEMENT Durham Road Improvements and Bridge Crossing of Fanno Creek May 26, 1995 The Durham Road project includes widening of Durham Road,the removal of the exiting bridge and the construction of a new 100-foot clear span structure. The Bridge construction includes removal and fill within a flood plain and placement of riprap for slope protection. 18.84.0404 Approval Standards A. The Hearings Officer shall approve or approve with conditions 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 narrowing of the floodway boundary; Approximately 600cy of fill material will be placed within the limits of the floodplain. Floodplain storage will be mitigated by removal of an equivalent amount of material under the bridge and immediately southeast of the bridge. The proposed structure removes obstructions in the floodplain and improves conveyance of the floodway. The hydraulic analysis"Durham Road Bridge Crossing of Fanno Creek" shows the maintenance of the zero-foot rise in the floodway. 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 of developments associated with community recreation uses,utilities,or public support facilities as defined in Chapter 18.42 of the Community Development Code shall be allowed in areas designated residential subject to applicable zoning standards; This is a public support facility, and as such is allowed. 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; See Item 1 above. 1 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 proposed improvements include a 5'bike land and 8' sidewalk on the new bridge section. 5. The plans for the pedestrian/bicycle pathway indicate that no pathway will be below the elevation of an average annual flood; The proposed bridged is above elevation 133.3. Thee 100-year floodplain is elevation 128.3, therefore, the pedestrian/bicycle pathway is above the average annual. 6. The necessary U.S.Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. A joint fill permit application for the U.S. Army Corps of Engineers and the State of Oregon Land Board,Division of State Lands is being processed. 7. Where land form alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. Floodplain area within the immediate vicinity of the Fanno Creek floodplain is to be dedicated public right-of-way. B. The Director shall approve or approve with conditions an application request for a sensitive lands permit on slopes of 25 percent or greater or unstable ground 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; The area of work is on the creek banks. The alteration is to accommodate the new bridge, provide riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 2. The proposed land form alteration or development will not result in erosion, 2 stream sedimentation, ground instability,or other adverse on-site and off-site effects or hazards to life or property; During construction,erosion and sediment control will be applied in accordance with U.S.A.current standards. Riprap aprons will be provided under the bridge area above the normal high waterline. Slopes steeper than 2:1 will be stabilized with riprap. 3. The structures are appropriately sited and designed to ensure structural stability and proper drainage of foundation and crawl space areas for development with any of the following soil conditions: wet/high water table; high shrink-swell capability; compressible/organic; and shallow depth-to- bedrock; and The bridge is a 100-foot clear span design with two bents,one at each end, supported by pilings. Removal of the existing bridge and construction of the new clear span structure will improve stability and drainage. 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 18.100, Landscaping and Screening. The loss of vegetation will be minimized. See the planting and grading plan for revegetation. C. The Director shall approve or approve with conditions 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 the extent greater than that required for the use; The area of work is on the creek banks. The alteration is to accommodate the new bridge, provide riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 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; During construction,erosion and sediment control will be applied in accordance with U.S.A. Riprap aprons will provide under the bridge area effects the normal high waterline. Slopes steeper than 2:1 will be stabilized with rip rap. 3 3. The water flow capacity of the drainageway is not decreased; The drainageway's flow capacity is not impaired by the bridge construction. Removal of the existing bridge and mitigating the floodway fill will remove obstructions within the floodplain and improve conveyance. 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 18.100,Landscaping and Screening; The loss of vegetation will be minimized. See the planting and grading plan for revegetation. 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 improvement is adequately sized to accommodate maximum flow. 6. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained. The necessary U.S. Army Corps of Engineers and State of Oregon Land Board, Division of State Lands approvals shall be obtained; and a joint fill permit application for the U.S. Army Corps of Engineers and the State of Oregon Land Board,Division of State Lands is being processed. 7. Where landform alterations and/or development are allowed within and adjacent to the 100-year floodplain, the City shall require the 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. (Ord.90-29; Ord.90-22; Ord. 89-06; Ord. 87-66; Ord. 87-32; Ord. 86-08; Ord. 84-29; Ord. 83-52) Floodplain area within the immediate vicinity of the Fanno Creek floodplain is to be dedicated public right-of-way. D. The Director shall approve or approve with conditions an application request for sensitive lands permit within wetlands based upon findings that all of the following criteria have been satisfied: 4 1. The proposed landform alteration or development is neither on wetland in an area designated as significant wetland on the Comprehensive Plan Floodplain and Wetland Map nor is within 25 feet of such a wetland; This area is not designated as significant on the Comprehensive Plan. 2. The extent and nature of the proposed landform alteration development will not create site disturbances to an extent greater than the minimum required for the use; The area of work is on the creek banks. The alteration is to accommodate the new bridge, prove riprap on the bank and to mitigate storage fill volumes due to the widening of Durham Road. 3. Any encroachment or change in on-site and off-site drainage which would adversely impact wetland characteristics have been mitigated; This project does not change on-site or off-site drainage. 4. Where natural vegetation has been removed due to landform alteration or development, erosion control provisions of the Surface Water Management program of Washington County must be met and areas not covered by structures or impervious surfaces will be replanted in like or similar species in accordance with Chapter 18.100, Landscaping and Screening; The loss of vegetation will be minimized. See the planting and grading plan for revegetation. 5. All other sensitive lands requirements of this chapter have been met; This narrative responds to Section 18.84.40 Approval Standards in its entirety. 6. The provisions of Chapter 18.150,Tree Removal,shall be met. The area of disturbance can be considered developed residential land since no further development can occur in this area; therefore, this area is excluded from the Tree Removal Chapter. 7. Physical Limitations and Natural Hazards,Floodplains and Wetlands, Natural Areas, and Parks, Recreation and Open Space policies of the Comprehensive Plan have been satisfied. (Ord. 90-29; Ord. 89-06; Ord. 87-66; Ord. 87-32; Ord.83-52) 5 The project meets the intent of the Comprehensive Plan. 302\wpdataldur-sens.wp,d 6 /' ;m—cli:Ctill-772- f-r-- 't Lrierp:! .-." TIGARD C 7''1 J F r s. 0. .. -,...2;,---t– -,),,,,....._ an ..r _ a . �I „a ...--13, � a1 � I -ear. 4R-Lg v. _ -._,-4. -,.,,H-t: L" I.1..-_.J. , : ‘dfr- VIVI] &,0 , s , 1 1;1---i- ;fir j���r�N �o�� e ! o ,1 ' i 1 p r -e 7 8 l l F?— . ui J A Wr ft' . ./ _- ,, iii. ;=ipuftr'Amn -sil 4(1'—i- • TO NEWBERG - PROJECT x -...,,,,,,„:• =1-liva-fl SITE R o ''',., - TO SALEM ti C Cu 0 4- D Z F- U W 7 O CR CL CJ 3 A LJ PACIFIC PROJECT LOCATION MAP FIGURE f=1 WIII V 8406 RV N198898 Avenue MAMMON,OR 97006-7120 Durham Road - Fanno Creek Crossing 1 al PD°°" (6001 626-0ts6 1'89: `1�;,.2^-°T'S SW Hall Blvd. - SW Upper Boones Ferry Rd. .l Wre}.���.ctu�ren'�m." 1 r�.1 W W Cr, \ 4 I 1 \ ) , I zai , I t ,,. ,,. , \ I 1 I / / ' i, 1 I 1 / O / l �/ i 1 1 rI 4 j- fin i r , -- < 7 /r1 1 / ylr ....� ••� i rt ilk , - '{ fm fi 1 f4, _I L- _ sink-:y-,►..,: i-A. - -• / lar fidlikk_ _ ./' -'„;I,trill 1 L410q--,6,.. it b 10- I =; ); ha S.W. DURHAM 'nAD yl' "t4iii11/Lai -Er- . LI ■ 6 t N. ''y .t SIVIII 1 - - - _.._____._.._ _.. „ . _ ate; - . r oe0 1. _ �� o Cohst. 2.l Slope -\ f ; \ , -- \\` W r 2 Consf\1.5:1 Slope \ \l\ ,; • �l 3 fnst, pass 700 Rp—Rap — 315�� \er'o 1 \t\ 4"tt O Const. 5:t Cut Slope , ► ,) � ` rr O5 Inst. pass 700 Rip—Rap in Toe Tren / Toe Trench Exc. — 125 C.Y. \ \ t i (For Details, See Sheet 2B-4) -----------‘- J c (FLE7) cl i ti Willow/Dogwood 0 0 z L Ash/Vine Maple,/Big Leaf Maple/Douglas Spirea/Solmonberry 0 re 0_ NOTE: See Specifications for Planting Pattern and Spacing 3 C w.�I-I PACIFIC BRIDGE GRADING AND PLANTING PLAN FIGURE o 5405 S.W. Blml.0 Avenue BEAVERTON.OR 97005-7120 Durham Road — Fanno Creek Crossing 2 gno_: (500)e2e-0155 1r: (555 5775 SW Hall Blvd. — SW Upper Boones Ferry Rd. J W,ls-M b A14cWa.•mw.wm.oW W Extg. Ground / — 10' CL 700 Rip—Rap Per Detail B, 2B-4 Finish Grade 1L J -. )% )(--',-)f )( j \..% I.,j `..i ... \ i ' . � , i\, f ta \ f • Varies r--. -)( -- -)' /( ..J' , ).-4.. ), ; --z.. ; -:.J; ;(-4;.); '�... \... , f ' Conc. Embankment (By Others) Extg. 12" Water Main SECTION "A—A" (Existing Water Main Coverage) N. T.S. /Extg. Ground 1.0R 5:1 Cut Slope ORDINARY HIGH WATER ELEV. 120 -..------Finish Grade SECTION "B—B" (Typical Fanno Creek Bank Grading) N.T.S. Extg. Ground `` .,;14------ " Extg. Ground—,,,_ -- l-4' V 1‘ 1.5:1 1.5:1 i :�t. ..��o \ ..- e- ri j 1.0% ,'-- 1.0% r` ELEV. 120' `-.; : ,,:' ` J ;i.> �% n} (ORDINARY HIGH WATER) v ■ o z w CL 700 Rip—Rop ce a. SECTION "C—C" N.T.S. L3 PACIFIC BRIDGE GRADING PLAN DETAILS _ FIGURE , wa v 6405 S.R. Nimbus Avenue BRAVERTON.OR 0700E-7120 Durham Road — Fanno Creek Crossing 3 Phone:fboal 625-0455 .._.fSOE,E2E-077E SW Hall Blvd. — SW Upper Boones Ferry Rd. S- flemf- •ioeln«ny•..:(5D5 J IaN Arebll.eWr.•O• emmW E.+•ler It Sec. 13, T. 2S., R. " ',, W.M. • ` ` 0 `; \ I I o t I/. \ o j I •j Z i ;Z O ! I '/ i i \ 1 __I / i i i j j �../ 71- i I �! !'O /,/ ;'Pt Oe Easement /jl �f � ' /i %=( i / • :-1- i-- �L _./7• �`. 1 1 / / / i/ g•. �i Tent.Cone.Easement 2 / %/.17 /�;`�� C�C.17'-i'..-.('�10 `T FY e Pemenm Oranogert:. ..Zj / / — — 7 L.cl/�Al�,'s..`"y.4'lli�'`--iii_ ►��� a // , �. Z +gam` C •"(` ' I ' r � '� � -AMIE Permanent Dro !semen dd!! _ j WA 111..1 �`.._ / !s_!.:tifY ' �x I .... __, _ �•�_I. , „,..„:„:„.:„.„,., „,,,,,49 1 el p• C, \ y.�Y' + . je .� k}'r, lS1lt ..1I ui • D U R:, >,.`4:jI o< 9 11,111,.._ t A il i /. v , ,L,0 pill (ID , n�ay -``' • `' 1 l ', Vic' _alllhir l _ _ ..- --s`a'te-per."_1Y' 7 /��rli � f1�1. �. '>tj ity� j :.� r A% i ,I i∎'' f 1' - , il.: 1 _ 1 l'-',.., i II1 1 rr .`j u y_L rq,p.Corr —= I i i I( f - '_. .. st. �!-- ■ iij; . \\\ Easement -—— .-; ._ — \ \Permanent Slope ,ent: — — — — \ i ill; \ \\\ i 'li•I ' 1 03 / \\di\\\\�CJI� ` 0 ;\l\ ` / y . \`��; 73 \ / • L (FEF!) ,` 1. \\\ • / / O2 Sta. 123+23 Rt. 26.5' J Const. Type '4A" Inlet 12 Reconst. Manhole (By Others) 23 Sta. 124+75 Lt. 44.0' Inst. 12" Sew. Pipe - 55' Const. Manhole Inst. 15" Sew. Pipe - 330' 13 Reconst. Manhole Inst. 15" Sew Pipe - 61' N (For Details, See Sheet 2B-3) cn O3 Sta. 124+70 Lt. 26.5' 14 Const. Single Span Conc. Bridge i Const. Type "4A" Inlet w/ Orifice Plate (For Bridge Plans, See Sheets 13-13G)24 (For Details, SeewSheet t28-4) o Inst. 15 Sew. Pipe - 55' Cu (For Details, See Sheet 2B-4) 16 Relocate Utility Pole - 7 (By Others) 25 Const. 5' Conc. Sidewalk Taper v From End of Bridge Panel z O4 Sta. 124+70 Rt. 26.5' 19 Const. Compost Storm Filter As Shown - 4 Const. Type "4A" Inlet (For Details, See Sheet 2E) W Inst. 15 Sew. Pipe - 147' Inst. 6" Sew. Pipe - 11' 10 For Grading Under Bridge, i Inst. Utility Pole - 6 (By Others) See Sheet 26-6 5O 20 Sta. 126+87 Lt. & Rt. 26.5' 27 Sto. 124+80 Lt. 35.0' Const. Type 'Mod. 4A" Inlet - 2 6' Sedimentation Manhole Inst. 12 Sew. Pipe - 72' 22 Inst. 6" Thick Conc. Sidewalk with 6" X 6" 10Ga Mesh Inst. 10" Sew Pipe - 19' 11 Remove Extg. Wood Shock Ste. 124+17 to Sta. 125+07 (For Details, See Sheet 2B-3) tp a Li W PACIFIC ROADWAY PLAN FIGURE CZI G ' 5405 S.W. Nimbus 1•enue BS.YLRION.OR 67005-7120 Durham Road — Fanno Creek Crossing 4 Pb...: tsos!11ee-o455 t..:(eD]'esMonS SW Hall Blvd. — SW Upper Boones Ferry Rd. _1 "r...r�•sap.«rme•11,,7,1 J_ I�aeeeaM aeabllsYna•ea•h"mW C/ass I Surface Finish, Typ. 48'O"Roadway Width I-4" _ 8-6" 5-0" i2-O" 14-0" 12-0" 5-0' 8-6" 1-4" Sidewalk Bike Lone Travel Lone Median Lane Trove/Lone Bike Lane Sidewalk ID) 2-Asphalt Concrete Pedestrian Rail On ' Wearing Surface Structure et Type r Concrete 7"Line Bridge Rai/ Richmond Structural Concrete S/. 002 fl/f! St 0.02 f//ft ' Inserts, Type EC-2F Or EC-2FW SI. 0.02 fl/ft S/. 0_ O2 ft/ft Or Equal, For .11-Bolls c� v. J• .�. o ° ' l0-0"Ctrs. Full Length Of I • ../_-6__„ _ 1-6" • 1-6" 16 • .�� Structure, 3 P/aces Each Side /-0"T •T . 2 0 _ . 444 T" .. r 1 -- � _ C —r:�- "3-J1" '3-11" U f"Drip Groove, /4------..._Inserts, Concrete Diaphragms I Provide Blackouts /n Diaphragm Typ. Both Sides Typ. Both e i Points See Waterproofing For Utilities Determine Size And Sides Sh. 6 For Details Membrane Location In Field, Typ. Both Sides 6-5" 7 Beam Spaces C 7-/O"=54=10"(8-54-Deck Bulb Tee Beams) 6-5" II 67-8"Out-Out Structure I 'NOTE 3=11-Dim Shown Is Nominal. Dimension TYPICAL DECK SECTION Will Vary Due To Cross Slope. 1/4.=1'-0' 6 9-1D" L=4" 8-6" ADVANCE PLANS O NOT FOR CONSTRUCTION N o �" OBEC CONSULTING ENGINEERS - [ 8" (N.1 -k 44-- ) _ 9-5" I' DATE . . _ ' /4 V 74- 8-,f4, Cont.. 17" N (Epoxy Coated) /4 0 9" II • II S/. 002 fl/ft 4C In ,, S/. 002 ft/ft Ben/ I Bent 2 e =lin o �.�.o :4:.: . . a= Field , • 54, Cont. Q Bend N (Epoxy Cooled) t ��/'�^ +I'�,1 9-6" Top Of Beam 1 6" f• AC Build-up Thkn. Varies SIDEWALK DETAILS ACWS BUILD UP DETAIL 1/2'=1'-0. NO SCA.E 8 h T4. r 244 MURRY CUB ROAD Fa:4503)693-6576 Consulting Engineers a> aRECaN 97401 7.1(503)663 d090 ® OBEC Consu/tin En ineers ti DATE REVISION BY o Ax/eff DESIGNER BRIDGE NO. SET ET ZS- CRAfTED ,/,,, ,tfi'T PR=N 17970 FANNO CREEK BRIDGE s — " °1's'°'d 7r0REGON DEP�TMENT OF TRANSI�ORTATION DATE aca¢u '..''.___•'.----2.#4.i.. BRIDGE ENGINEERING SECTION DRAWING No. a REvirrTn o.�' CALC. BOOK SUPERSTRUCTURE DETAILS 1 p iws 12-31-96 • Fife Ma . • HYDRAULIC DATA \Bonita ` ( Rd o4 ZO"4" 100'O"C/r. Clr. Bents 20=4" l a� DESIGN L3ASE ROADWAY End Pme/ HPe/ FLOOD FLOOD OVERTOPPING Q V 11 Discharge-cfs 4200 4200 �e r..i/5"-0.. Frequency Years 100 100 C .7' d a' et Typ' KW.Elevation O Nat.Ctwr,el Ft. 128.3 1283 Z �`�, �Rd ,AG in-- e Class 700 Riprop I Sid. 20-4 Bridge �,� ti-: Durham Rd. iI End Panel, Ea End. ��O sr i CyI sr sr— I �%` See Dwg. No. 43422 ��00 O. 0 i �j�" PROJECT A �,e5 MH — v goo�a • e(� o L 5kc } t SAN Ni3•T.as- I JOINT • '4 PERMIT APPLICATION FORM `': k, uaii _. US Army Corps '...` "'"'"APPLICATION WILL MEET THE REQUIREMENTS OF BOTH AGENCIES of Engineers A O'• Portland District ��a s AGENCIES WILL ASSIGN NUMBERS Corps Action ID Number Oregon Division of State Lands Number SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENPP-PE-RP Division of State Lands P.O. Box 2946 775 Summer Street NE Portland, OR 97208-2946 Salem, OR 97310 503/326-7730 503/378-3805 ®Applicant Name Oregon Department of business# (503)986-3782 Transportation home phone# ATTN:Alan Lively FAX# (503)986-3749 and Address Room 200, Roadway Engineering Section Salem, OR 97310 business phone# (503) 626-0455 O Co-Applicant home phone# x7266 ® Authorized Agent W&H Pacific Inc. FAX# (503) 526-0775 ATTN: Jim Evans O Contractor 8405 SW Nimbus Ave. Name and Address Beaverton, OR 97008-7120 Property Owner Oregon Dept. Of Transportation business phone# (503) 986-3782 (if different than applicant) ATTN:AIan Lively home phone# Name and Address Room 20, Roadway Engineering FAX# (503) 986-3749 Section Salem, OR 97310 ® PROJECT LOCATION Street, Road or other descriptive.location Legal Description Durham Road - Quarter Section Township Range (SW Hall Blvd. To SW Upper Boones Ferry Rd.) NW 13 T2S RI W In or Near(City or Town) County Tax Map# Tax Lot# Tigard Washington 2S 1W 13 AB 800 2S 1W 13 BA 100,400 Waterway River Mile Latitude Longitude Fanno Creek 1 45°22W 122°45W Is consent to enter property granted to the Corps and the Division of State Lands? ® Yes 0 No Y , JOINT °PERMIT APPLICATION FORM US Army Corps THIS APPLICATION WILL MEET THE REQUIREMENTS OF BOTH AGENCIES of Engineers Portland District +- 4:41 c.rcI. :• i:! •Vi.y.Y.1;y'_! tic'i,11A�i�'l;�ri!%0,M?4: aj?rf�{`5tsha 5t.. �CrY+L .1ky�� ii'.r"�X' .F >Y]�KS .T.•� M J4 fb[ r�Y J M�._.L •� ~��+V� .:�-tf:•q-j.4�.r;rislL;�:i✓'�.'�.��.'x••lll. i���. �...'V'�.�, r:+..�y1• ,�.....: :"...; _.�> .,. .. -... Corps Action ID Number Oregon Division of State Lands Number SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENPP-PE-RP Division of State Lands P.O. Box 2946 775 Summer Street NE Portland, OR 97208-2946 Salem, OR 97310 503/326-7730 503/378-3805 ®Applicant Name Washington County Department business# (503) 693-4461 of Land Use and Transportation home phone# and Address ATTN:Bill lhly FAX# (503) 693-4805 155 N. First Avenue, Suite 350 Hillsboro, OR 97124 business phone# (503) 626-0455 O Co-Applicant home phone# x7266 ® Authorized Agent W&H Pacific Inc. FAX# (503) 526-0775 ATTN: Jim Evans O Contractor 8405 SW Nimbus Ave. Name and Address Beaverton, OR 97008- 7120 Property Owner Oregon Dept. Of Transportation business phone# (503) 986-3658 (if different than applicant) ATTN:Matt Caswell home phone# Name and Address Room 417 Transportation FAX# (503) 986-3625 Building Salem, OR 97310 © PROJECT LOCATION Street, Road or other descriptive location Legal Description Durham Road Quarter Section Township Range (SW Hall Blvd. To SW Upper Boones Ferry Rd.) NW 13 T2S R1W In or Near(City or Town) County Tax Map# Tax Lot#. Tigard Washington 2S 1W 13 AB 800 2S 1W 13 BA 100,400 Waterway River Mile Latitude Longitude Fanno Creek 1 45°22'N 122°45'W Is consent to enter property granted to the Corps and the Division of State Lands? ® Yes 0 No •• O PROPOSED PROJECT INFORMATION Activity Type: Q Fill 0 Excavation(removal) 0 In-Water Structure 0 Maintain/Repair on Existing Structure Brief Description: Replace existing bridge. Place riprap to protect bridge abutment. Fill will involve . cubic yards annually and/or 402 cubic yards for the total project 402 cubic yards in a wetland or below the ordinary high water or high tide line Fill will be® Riprap 0 Rock 0 Gravel 0 Sand 0 Silt 0 Clay 0 Organics 0 Other Fill Impact Area is 0.08 Acres; varies length; varies width; 3 ft. depth Removal will involve cubic yards annually and/or; 402 cubic yards for the total project 402 cubic yards below the ordinary high water or high tide line Removal will be 0 Riprap 0 Rock 0 Gravel 0 Sand ® Silt Q Clay 0 Organics 0 Other Removal Impact Area is 0.08 Acres; varies length; varies width; 3 ft. depth Estimated Start Date July. 1996 Estimated Completion Date September 30, 1996 Will any material, construction debris, runoff, etc. enter a wetland or waterway?®Yes 0 No If yes, describe the type of discharge and show the discharge location on the site plan. ® PROPOSED PROJECT PURPOSE&DESCRIPTION Project Purpose and Need: The project is intended to relieve traffic congestion and improve traffic safety on Durham Road, an important arterial connecting Interstate 5 with Highway 99W Project Description: The project will widen a two-lane road with inadequate shoulders, and replace a narrow five-span, wood-piling supported bridge with a modem road with two 12'travel lanes, a 14' center turn lane, 5'bike lanes and 6.5'sidewalks. The proposed bridge will be a clear span with abutment in the same location as existing. The area around the abutment will be protected with Class 700 riprap, which will extend 3'below OHW(120). An area of about 4,000 square feet of stream bank downstream from the bridge will be graded down to OHW to mitigate the floodplain impacts of the new embankment. How many project drawing sheets are included with this application? 4 NOTE: A complete application must include drawings and a location map submitted on separate 8 A X 11 sheets. PROJECT IMPACTS AND ALTERNATIVES Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetland. A design with no fill below the elevation of OHW(120'was considered;however,it was found to be necessary to extend the riprap 3' below OHW to protect adequately the abutment from scour by the creek. Describe what measures you will use(before and after construction)to minimize impacts to the waterway or wetland. 1. In-water-work will be performed only during period set out by ODFW(July 1 -Sept. 30). 2. No concrete or asphalt will come into contact with the active flowing stream. 3. Only clean, durable rock shall be used for riprap. 4. No petroleum products, chemicals or other deleterious materials shall enter the water. 5. Removal of existing woody vegetation will be minimized, and limited to construction and access areas. 6. All disturbed streambank and floodplain areas will be seeded with grass and planted with native shrubs and trees to prevent erosion and restore the area. 7. Riprap shall be placed using land-based equipment NOTE: If necessary,use additional sheets. ADDITIONAL INFORMATION Adjoining Property Owners and Their Addresses and Phone Numbers Duncan, John &Janice 16055 SW 74th Avenue, Tigard, OR 97223 Johnson, Carl 200 James Street, #407, Edmonds, WA 98020 Hambach, Harold&Mildred 7735 SW Durham Road, Tigard, OR 97224 Has the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon in the past, e.g., wetland delineation,violation, permit, lease request, etc.? 0 YES ® NO If yes,what identification number(s)were assigned by the respective agencies: Corps# State of Oregon# Y I COUNTY PLANNING DEPARTMENT AFFIDAVIT (to be completed by local planning official) O This project is not regulated by the local comprehensive plan and zoning ordinance. O This project has been reviewed and is consistent with the local comprehensive plan and zoning ordinance. O This project has been reviewed and is not consistent with the local comprehensive plan and zoning ordinance. O Consistency of this project with the local planning ordinance cannot be determined until the following local approval(s)are obtained: O Conditional Use Approval 0 Development Permit O Plan Amendment 0 Zone Change O Other An application 0 has 0 has not been made for local approvals checked above. Signature(of local planning official) Title City/County Date ® COASTAL ZONE CERTIFICATION If the proposed activity described in your permit application is within the Oregon coastal zone,the following certification is required before your application can be processed. A public notice will be issued with the certification statement which will be forwarded to the Oregon Department of Land Conservation and Development(DLCD)for its concurrence or objection. For additional information on the Oregon Coastal Zone Management Program, contact the department at 1175 Court Street NE,Salem,Oregon 97310 or call 503-373-0050. CERTIFICATION STATEMENT I certify that,to the best of my knowledge and belief,the proposed activity described in this application complies with the approved Oregon Coastal Zone Management Program and will be completed in a manner consistent with the program. Print/Type Name Title Applicant Signature Date SIGNATURE FOR JOINT APPLICATION (REQUIRED) Application is hereby made for the activities described herein. I certify that I am familiar with the information contained in the application, and,to the best of my knowledge and belief,this information is true, complete, and accurate. I further certify that I possess the authority including the necessary requisite property interests to undertake the proposed activities. I understand that the granting of other permits by local, county, state or federal agencies does not release me from the requirement of obtaining the permits requested before commencing the project. I understand that local permits may be required before the state removal-fill permit is issued. I understand that payment of the required state processing fee does not guarantee permit issuance. Print/Type Name (coapplicant) Title Applicant Signature (coapplicant) Date I certify that I may act as the duly authorized agent of the applicant. Print/Type Name Title Authorized Agent Signature Date ^ 'PLEMENTAL WETLAND IMPACT INFORMATION' (FOR WETLAND FILLS ONLY) Site Conditions of Impact Area Impact area is 0 Ocean 0 Estuary 0 River 0 Lake ® Stream 0 Freshwater Wetland Note: Estuarian Resource Replacement is required by state law for projects involving intertidal or tidal marsh alterations. A separate Wetlands Resource Compensation Plan may be appended to the application. Has a wetland delineation been completed for this site? Q Yes 0 No If yes by whom: SRI/Shapiro Describe the existing Physical and biological character of the wetland/waterway site by area and type of resource(use separate sheets and photos, if necessary) Fanno Creek is an important perennial stream draining the eastern Washington County urbanizing area. it flows into the Tualatin River about a mile below the project. The creek has a mean annual flow of 64 c.f.s.in the project area. Flow and water quality vary widely depending on rainfall events due to the urbanized nature of the watershed. The stream is deeply incised, with a narrow but fairly undisturbed riparian zone including the following species: Oregon ash, red alder,big-leaf maple, western wahoo, and hazelnut. Himalayan blackberry and reed canarygrass dominate a more disturbed area. Wildlife use includes ducks and songbirds. Such riparian zones typically function as a mitigation corridor for mammals such as raccoon and opossum, which are adapted to an urbanizing environment. There are no wetlands in the project area. Wetlands have been identified beyond the project boundaries (see attached sheet). Resource Replacement Mitigation Describe measures to be taken to replace unavoidably impacted wetland resources Removal of woody vegetation will be minimized within 60'of OHW Where complete removal is unnecessary, e.g. for construction access, above-ground portions of frees and shrubs will be trimmed off so as to allow natural regeneration. The creek bank grading area and other disturbed areas outside the toe of the riprap will be seeded with grasses and planted with native shrubs and trees. The immediate creek bank zone will be planted with willow and dogwood. The remaining area will be planted with Douglas spiraea, vine maple, salmonberry, oregon ash and big/eaf maple. N Hydraulic Analysis For: Durham Road Bridge Crossing of Fanno Creek Prepared for: Washington County Department of Land Use and Transportation 155 North First Avenue, Suite 350 Hillsboro, Oregon 97124 Prepared by: W&H Pacific, Inc. 8405 SW Nimbus Avenue Beaverton, Oregon 97008 April 4, 1995 Purpose The Durham Road Project includes construction of a new bridge crossing at Fanno Creek. The proposed structure is a simple 100 foot clear span over the existing channel. No constriction to the flow is proposed since abutment locations will not change. A hydraulics report is required to evaluate the impacts of the proposal. This report will document compliance with the City of Tigard's "no-rise" floodplain criterion. Specifically, it addresses chapter 18.84.040, Approval Standards of the City's Sensitive Lands ordinance. These standards require that developments within the floodplain shall not increase the water surface (subsections A 1 and 3). Methodology This analysis used the Federal Emergency Management Agency's (kEMA) standards for a "no-rise" determination. This involves preparation of three hydraulic models to demonstrate the following: • Verification- this model will duplicate the effective Flood Insurance Study (FIS) model. • Existing conditions -the verification model modified to reflect conditions prior to the project. • Proposed conditions- the existing conditions model revised to reflect the completed project. Computer modeling was performed using the HEC-2 (v4.6.2, Haestad Methods Implementation 6.52) computer program. This program was developed by the Corps of Engineers (COE) Hydraulic Engineering Center(HEC)in Davis, California. The following sections describe the application of this methodology and results. Verification The model for the effective FIS was obtained in digital form from the Corps of Engineers Portland, Oregon office. It is dated June 1980 with a revision in October 1983. The entire model (sections 0.020 through section 13.064) was run for this analysis. Figure 1 is a Vicinity Map showing the project location. Figure 2 is a portion of the effective FIS map which shows the Durham Road crossing of Fanno Creek. Table 1, Fanno Creek Model Comparisons, tabulates the FIS values and the results of the verification run. The results show excellent correlation between the published values and the model obtained from the Corps. A floppy disk is provided which contains all the models used in this analysis. The verification run is titled FNO DUP.HC2. 1 Existing Conditions A review of the effective FIS model raised concerns regarding the bridge section used. Figure 3, Cross Sections, compares the effective section with actual survey data. It can be seen that the surveyed section contains significantly less area than the effective FIS section. The effective FIS model, then, was revised to reflect existing conditions. The revisions are listed below: Revisions to Effective FIS to Reflect Existing Conditions. • Archival records were changed to indicate that the model was revised by W&H Pacific. • Section number 1.43 was changed to section number 1.431. • GR cards at section 1.431 were changed to reflect surveyed geometry. • X1 card at section 1.431 was changed to reflect the revised GR data. These changes included left and right bank station offsets. The vertical adjustment factor was deleted. • NH card was revised for section 1.431 to match the new GR data. Roughness coefficients were not changed. • Section number 1.44 was changed to section number 1.441. • NH card for section 1.441 was changed to reflect the GR data entered at section 1.431. • BT stations for section 1.441 were revised to match the GR data. • SB card for section 1.441 was revised as follows: bottom width(BWC)was changed to 26.85 from 20; open area(BAREA)was changed to 727 from 830; side slopes(SS)were changed to 2.0 from 2.09; and, the inverts (ELCHU and ELCHD) was changed to 116.9 from 115.0. • The vertical adjustment factor at section 1.441 was deleted. • The low chord elevation (ELLC) of the bridge was changed on the X2 card to 130.4 from 130.7. Table 1 provides a summary of results for the existing conditions model. The summary shows the water surface is higher than the effective FIS model. This effect extends for approximately 1.9 miles upstream. A copy of the existing conditions model is provided on the disk enclosed as FNO_XTG.HC2. Proposed Conditions The Durham Road Project will, among other things, replace the bridge which currently crosses Fanno Creek. The existing bridge is a five span structure with four piers in the floodplain. The proposed bridge will be a clear span with abutments at the same location. The new bridge will be significantly higher to improve vertical roadway alignment. The Durham Road Project also widens the existing roadway surface. Figure 4, Proposed Bridge Crossing at Fanno Creek, is a topographic survey showing existing and proposed conditions. The City of Tigard's Sensitive Lands Ordinance requires mitigation of fill placed within the floodplain(18.84.040A1). Portions of this fill are mitigated by cutting overbank areas under the bridge. Figure 3, Cross Sections, provides a section showing proposed conditions. 2 i— - • I v !• ' � ` "'y,,.. :. s. a $rs Qf Y0•• Y C'. ��` ' .I_ n -- _' :Bonia' -4. : 25 '-1:.=--.2.a-1,t--_.-__._:€•):-•-,k- •.ce •.. •0-\•,'. ... "_$0:'' 1r5029 .— ' ,:311 3 r. . ;_'":.' •.1 . W ILL ;`�•to 1• P• 1� •,W sr✓n• q•rex'iS .fe �lr L '�--=' • • r-_• ..- I' :I., 5.:1:,■."--.1.:1 .1.i.-e-et• . . • i_:__--..�� �,,;�.J/may ��...� . :�/ i(��r,� y ��'--1-,� � )11 __ •-1 , ...lS1w.. ..SATTLEa. . ! ;,.:„T 700 I. , \• • r" 3�J �.: .ro I I a o (1-1 I c)• •. fig ._ ':---- m ; I r i�r ,4_- /vi .' 1 ��V � I r =r v wait. _jam -"' /' .-1 ∎"2,1 -0.-/_-.-!,.,/.1/d j,2i.-.• jr av ;"- cl z 1 I -4` �O a. 1C v• .� RiL' rOii i `, �I /� ". '�li I ` 't • 1:,. ' rh am : r.4 Mlle 1• ' /� II ��::- -- . .l :G: ;I• :i i TU ATIN (� I , ty , ■ • -, _ ,---• �\`�, di) • nona< t \:��1• 'Sell 111 r •1\� /,•J , - . Cem'�; i :?il C e 4 'YoC U B I 1i1- ..\iI .S%7 !a` I1r ✓fra1Ierf •• .•-!-1 ‘Ir_ _ .J --1. F'`� ' •6-.1. •'' -rr 2 -AClFIC P77•1 it Imo' __.__:. I::' •-:,''f/'.•1 — -y'4zo o 0 DATE I BY I REVISION CHK a - I < Figure 1 Vi 1 1 Map Vicinity Ma 1 DRAWN BY: �- ..r.• .s _ CHECKED BY: WVa PACIFIC ! "f.; a APPROVED Sri •��� r,.o� SCALE: PROJECT NO. I :ILE NAME: I W 1 SECTION, TOWNSHIP, RANGE: / ~1 (j1 1 1 I . I _ _ - I % I rt' '', 1- --r- r - -/- I vr,1„.. ii ,.....,_ 1 I.) r '�`� .�� r / 1 /�) .I .ice-•} ; iJ; , I ' y a / , 1 / 1':' ' W,, „o • �� ,1 _ tea. (t3, �� •�--Fi Pa -_---r- I ��■mrlin mom. - _. 0, :A , ,c;._. .: MEd MICONIERMINiiIIMENESI Klirn il .-l---:,-.-. .1.' f,,.. . --I. . •.,. _ i 1 13 0 , 1• / T+r / '- , - -Ji_...," i,. ,I T -0, \ - - • _r ` . I � `Oil .... ,_ 1 ..2,,..0 '..., : F . ,....., _________r---- 0 . ---...- ._,),.-1. `,$, 10 `)‘.,, ',.)..„-_, - r(--Ck-r-;L---- 1„, I \ l '• `-ti 3� �, i.. I ���r--.fin. ' \ \ • - ..1 ( v•-••■.... ---)---, .,1 fri.'1.-.. ;---)- \ SI'I i1 • 1., f-'''( ,� , .I`•.. i 1•x.1• L_J- rte!`�_(_.1•--r • _I -� • ,'�-c , ./^ I ``N 1111M,E11 -1—*--.- '- '4.--. riMENNISE IBM EINAlkeit ''.--'. \ `/lyr,�• L. �t _�(i ACC 112 �1. %� ::�UM C . ?. I -.r" 1 sic ..a era= _ I ,f HIM= I Us 1111‘ lir a , l'•) ..--",.:- ---;._ .:-- i *ss,1 ---,-.....< ' 4AI\ \ ..A k, ,i --;2`?.,c\--21 -\\,4 _i__ (--- 7:.-i_ .c.-, . --1-- ilgoi...._ I' i \ 1 -"N., i ( --• % .1.. -1.-:-. - ' ......Ilik r 7 I I I I.b..- .... l • • — a •` c_ i r (0. `° ' • 1 \ i D o . ► 1 o -D c3 -a l a CD i i t i I a) .... :IN. i if p I I • ' 4 j I , a 1 CD ! I i \'� / S II CO I--1 4 � II:: ` ! I I 0 ^ I:I (% I \\ ,i - ll 1 \ I L _IwAib list...-------- --- . N m Figure 4 DRAWN BY: Proposed Bridge Crossing \V&JI P A C I , I C CHECKED BY At Fanno Creek 8405 S.W. Nimbus Avenue BEAVERTON, OR 97008-7120 APPROVED BY: SCALE: 111_20 PROJECT NO. FILE NAME: Phone: (503) 628-0455 Far: (503) 526-0775 Planning • Engineering • Surveying Landscape Architecture • Environmental Services LAST EDIT: PLOT DATE: The existing conditions model,then,made several revisions to reflect actual conditions. A summary of these changes follows. • Archival records were changed to indicate that the model was revised by W&H Pacific. • Section number 1.43 was changed to section number 1.431. • GR cards at section 1.431 were changed to reflect surveyed geometry. • X1 card at section 1.431 was changed to reflect the revised GR data. These changes included left and right bank station offsets. The vertical adjustment factor was deleted. • NH card was revised for section 1.431 to match the new GR data. Roughness coefficients were not changed. • Section number 1.44 was changed to section number 1.441. • NH card for section 1.441 was changed to reflect the GR data entered at section 1.431. • BT stations for section 1.441 were revised to match the GR data. • SB card for section 1.441 was revised as follows:bottom width(BWC)was changed to 26.85 from 20; open area(BAREA)was changed to 727 from 830;side slopes (SS)were changed to 2.0 from 2.09; and, the inverts(ELCHU and ELCHD)was changed to 116.9 from 115.0. • The vertical adjustment factor at section 1.441 was deleted. • The low chord elevation(ELLC)of the bridge was changed on the X2 card to 130.4 from 130.7. Table 1 provides a summary of results for the existing conditions model. The summary shows the water surface is higher than the effective FIS model. This effect extends for approximately 1.9 miles upstream. A copy of the existing conditions model is provided on the disk enclosed as FNO_XTG.HC2. Proposed Conditions The Durham Road Project will,among other things,replace the bridge which currently crosses Fanno Creek. The existing bridge is a five span structure with four piers in the floodplain. The proposed bridge will be a clear span with abutments at the same location. The new bridge will also be significantly higher to improve vertical roadway alignment. The Durham Road Project also widens the existing roadway surface. Figure 4,Proposed Bridge Crossing at Fanno Creek,is a topographic survey showing existing and proposed conditions. The City of Tigard's Sensitive Lands Ordinance requires mitigation of fill placed within the floodplain(18.84.040A1). Portions of this fill are mitigated by cutting overbank areas under the bridge. Figure 3,Cross Sections,provides a section showing proposed conditions. The proposed conditions model changes the existing conditions model to reflect the project. The primary changes involved revising the bridge opening to reflect the new construction. Specific changes are as follows: • Archival records were changed to indicate that the model was revised by W&H Pacific. • X1 for section 1.431 was revised to indicate a shorter reach length downstream. Bank stations were also changed on this card to reflect the new GR data set. • GR cards for section 1.431 were revised to reflect the proposed opening configuration. • X1 for section 1.441 was revised to indicate the new longer reach length. • NH cards for both 1.431 and 1.441 were revised to reflect the revised GR stations. `N' values were also lowered on section 1.441 to 0.06 from 0.075 in the overbank area. This was done to reflect the 2 Table 1 Fanno Creek Model Comparisons Verification Existing Conditions Proposed Conditions Cross FIS W&HP T Difference W&HP Difference W&HP Difference Difference Section Distance Values Verification From FIS Extg. Cond. From Verification Prop'd. From Extg. From Verification A 1.11 123.7 123.71 0.01 123.71 0.00 123.71 0.00 0.00 B 1.44 128.3 128.32 0.02 128.77 0.45 128.51 -0.26 0.19 C 1.53 130.0 130.01 0.01 130.94 0.93 130.23 -0.71 0.22 D 2.41 133.8 133.76 -0.04 133.88 0.12 133.78 -0.10 0.02 E 2.69 136.9 136.88 -0.02 136.92 0.04 136.88 -0.04 0.00 F 2.80 137.7 137.72 0.02 137.76 0.04 137.73 -0.03 0.01 G 3.34 140.0 139.99 -0.01 140.00 0.01 139.99 -0:01 0.00 H 3.68 141.1 141.05 -0.05 141.05 0.00 141.05 0.00 0.00 I 3.86 141.9 141.85 -0.05 141.85 0.00 141.65 0.00 0.00 J 4.16 145.9 145.90 0.00 145.90 0.00 145.90 0.00 0.00 K 4.50 146.8 146.78 -0.02 146.78 0.00 146.78 0.00 0.00 L 4.73 148.0 148.00 0.00 148.00 0.00 l 148.00 0.00 0.00 NOTE: 1) A negative difference indicates a fall in WSE. A positive difference indicates a rise in the WSE. 2) Durham Road bridge lies between stations 1.43 and 1.44 > n O • 2 A 0ri > D I - _. - -._ A °� f m to j �' i t i -0 m j I . L t"' r- II ! ' � A � t . I rn . t cc e� ►-d 1 .1: � C� ! . I ti . ►---� , :Effective FIS j • C� n i \ y x iT .t m . . \, -,i i Lt9 Conditions j 1� p ! ,r- 4 i • y I• , / xl •j I2b _— �- _.... f- ..-�/ �° -n H • ■ w (n. o j ; : Prop'd Conditions . _ . , . 1 . . W , .. . . .1 E 1 'm Q . , --. / I • i , I OVERBANK AREAS REMOVED FOR'PROPOSED CONDITIONS I _• ...-. . . . . . . LAST EDIT: PLOT DATE: ti o I to r I� h N u O APPROXIMATE SCALE rT v2 ;a. . L400 0 400 FE ET u� °p I .. I---� _ H—1-- .-- — — I n n W A .rte 0 2 0 • `' _ A as NATIONAL FLOOD INSURANCE PROGRAM zz �N R,F.• ci as w q�V h• O� M W qumi mN �Y N -4 1 m d u FLOODWAY a °nb Q FLOOD BOUNDARY AND a. FLOODWAY MAP �\ orha� A •4, CITY OF Ra �, '`;,�I TIGARD, OREGON I w �sAti p ' O - WASHINGTON COUNTY z O (.0 f .- PANEL 5 OF 5 c o „.. 4 .T.. .. ....,........ ,............... .0,... .............. c...., = 4._____r. `"' ^mot k^''!j?t �� . �,(� ter . (SEE MAP INDEX FOR PANELS NOT PRINTED) / V W 0 �� t ,T File. / ...��1 ( N.....,.... LL. rt P / QJ ^~p 4" • CD > — G�� / U , 1/41,,,pnb, is ..—.. . 'Y~ w J — err Q /� COMMUNITY-PANEL NUMBER N �/' ^--� _. 410276 0005 I EFFECTIVE DATE: i .t v i~M^ ^." Lii I4���o �� MARCH 1, 1982 cc 1 ' a '=' 1r` ,. m 0 CO °w a I—..--.7 SW BRADI• ` .- 1,1111. w 0 = r �yo :J,'' r Z Y O z + ° o i a r I •+�� 0 U Q o Z. Federal Emergency Management Agency/ SHEET o H 1 -- -,� - -- — Appendix �� Federal Emergency Management Agency �' C6 0.�I7III• - Washington, D.C. 20472 ply.• PC,S� *�• �W • CERTIFICATION OF A "NO—RISE" DETERMINATION FOR A PROPOSED FLOODWAY DEVELOPMENT City of Tigard Bridge Reconstruction Community Name Development Name Durham Road @ Fanno Creek Lot/Property Designation City of Tigard Property Owner I hereby certify that the proposed remedial measures, in combination with the property development designated above, will result in no loss of flow conveyance during the occurrence of the 1 percent annual chance of exceedence (100—year flood) discharge. I further certify that the data submitted herewith in support of this request are accurate to the best of my knowledge, that the analyses have been performed correctly and in accordance with sound engineering practice, and that the proposed structural works are designed in accordance with sound engineering practice. del I eir P_*4 Date Registered Professional Engineer ��REO PROFFf 14.481 9 • Seal v UREGUN Lt 6425, 1��� ip C. PUS Expiration Date 12-31-96 • :v. Date: 12MAR95 Run Time: 18:14:12 HMVersion: 6.52 Data File: fno dup.hc2 Page 1 THIS RUN EXECUTED 12MAR95 18:14:12 HEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 THIS IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 AC HEC-2 PC FILE NAME : FANNC83C.DAT AC INPUT TAPE 400 FILENAME: FANNIC3T AC HYDSEC TAPE 531 FILENAME #11 : ICFANNO3 AC ** AC FANNO CREEK R.M. 0 - 13.1 AC 10-, 50-, 100-, AND 500-YEAR FLOODS AC DURHAM, TIGARD, BEAVERTON AND AC WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY AC JUNE 1980 REVISED OCTOBER 1983 AC AC STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD AC AC .• AC tali PACIFIC VERIFICATION RUN - MARCH 1995 AC AC AC CROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA AC OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON AC TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 AC MAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AC AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR AC ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR AC FIELD SURVEYS BY USCE, PORTLAND DISTRICT AC ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ AC ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON AC DISCHARGES . AC START METHOD : NORMAL DEPTH, SLOPE = 0.002462 AC AC US ARMY ENGINEER DISTRICT, PORTLAND, OREGON AC ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT AC GEORGE HOLMES, CHIEF, HYDROLOGY SECT. AC KEN SODERLIND, STUDY MANAGER ENG. AC AC HYDRAULICS BY NORMAN ASSOCIATES AC T1 FANNO CREEK, RM 0.02 TO RM 13.06 12 10 YEAR FLOOD 13 FANNO CREEK J1 ICHECK INQ NINV IDIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 EFFECTIVE FIS MODEL Run Date: 12MAR95 Run Time: 18:14:12 HMVersion: 6.52 Data File: fno_dup.hc2 Page 3 3 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 1 1.11 0 0 0 40 40 40 0 0.1 2 0 0 1 127.9 130.0 7 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 7 421 130.0 130.0 0.100 0.095 0.050 1 1.14 18 185 240 120 140 130 . 2 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 2 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 2 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 2 128.0 425 130.0 450 140.0 500 . 0.090 0.110 0.055 1 1.32 21 60 122 410 960 960 t 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 2 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 2 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 2 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 2 134.0 332 0.095 0.100 0.055 1 1.40 18 175 250 420 310 400 2 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 2 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 2 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 2 136.0 310 138.0 380 140.0 425 0.3 0.5 { 4 0.075 835 0.050 876 0.085 1000 0.060 1044 1.43 26 835 876 200 230 200 0 -0.2 2 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 2 135.0 560 134.4 590 132.2 605 130.7 615 130.7 720 2 130.7 810 121.3 810 120.3 835 117.3 843 117.2 849 116.7 852 116.6 856 116.2 860 / 115.1 865 115.0 870 117.2 874 122.0 876 130.7 906 134.0 950 138.0 1000 140.0 1044 4 0.075 835 0.050 876 0.110 1600 0.060 1044 1.10 1.5 2.35 0 20 4 830 2.09 115.0 115.0 1.44 0 0 0 40 40 40 0 0.2 ' 0 0 1 130.7 132.2 8 605 132.2 132.2 615 132.2 130.7 720 132.2 130.7 810 132.2 130.7 811 132.2 130.7 905 132.2 130.7 906 132.2 130.7 950 134.0 134.0 0.080 0.100 0.052 0.3 0.5 1.47 19 262 300 150 170 200 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 115.3 295 120.0 300 130.0 350 140.0 447 EFFECTIVE FIS MODEL • .Run Date: 12MAR95 Run Time: 18:14:12 HMVercion: 6.52 Data File: fno_dup.hc2 Page 26 SECNO XLCH ELTRD ELLC ELMIN G CWSEL CRIVS EG 10*KS VCH AREA .01K 1.320 960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 ' 1.430 200.00 0.00 0.00 114.80 2923.00 126.79 0.00 127.27 21.05 5.93 610.46 637.11 1.430 200.00 0.00 0.00 114.80 3809.00 127.79 0.00 128.42 25.18 6.91 694.89 759.15 1.430 200.00 0.00 0.00 114.80 4193.00 128.18 0.00 128.89 26.76 7.29 729.48 810.48 1.430 200.00 0.00 0.00 114.80 5093.00 129.01 0.00 129.88 30.43 8.15 803.85 923.24 1.440 40.00 132.20 130.70 115.00 2923.00 126.88 0.00 127.37 22.17 6.04 600.92 620.76 1.440 40.00 132.20 130.70 115.00 3809.00 127.91 0.00 128.56 26.20 7.01 687.96 744.16 lilt 1.440 40.00 132.20 130.70 115.00 4193.00 128.32 0.00 129.05 27.73 7.39 723.80 796.27 1.440 40.00 132.20 130.70 115.00 5093.00 129.19 0.00 130.08 31.21 8.24 801.54 911.61 1.470 200.00 0.00 0.00 115.30 2923.00 127.42 0.00 127.83 22.78 5.86 796.28 612.45 1.470 200.00 0.00 0.00 115.30 3809.00 128.67 0.00 129.08 20.99 6.11 1030.72 831.42 1.470 200.00 0.00 0.00 115.30 4193.00 129.18 0.00 129.58 20.31 6.19 1128.04 930.43 1.470 200.00 0.00 0.00 115.30 5093.00 130.27 0.00 130.68 19.02 6.37 1361.27 1167.77 1.530 490.00 0.00 0.00 115.70 2913.00 128.35 0.00 128.60 13.32 5.01 1258.49 798.05 1.530 490.00 0.00 0.00 115.70 3792.00 129.53 0.00 129.76 11.78 5.09 1661.66 1104.83 1.530 490.00 0.00 0.00 115.70 4174.00 130.01 0.00 130.24 11.27 5.12 1829.79 1243.18 1.530 490.00 0.00 0.00 115.70 5069.00 131.05 0.00 131.27 10.16 5.16 2212.71 1590.25 ' 2.000 2400.00 0.00 0.00 117.60 2913.00 130.41 0.00 130.55 5.98 3.80 1957.15 1191.68 ' 2.000 2400.00 0.00 0.00 117.60 3792.00 131.40 0.00 131.53 5.63 3.92 2563.38 1598.08 • 2.000 2400.00 0.00 0.00 117.60 4174.00 131.81 0.00 131.93 5.46 3.95 2819.94 1786.89 ' 2.000 2400.00 0.00 0.00 117.60 5069.00 132.70 0.00 132.81 5.11 4.02 3394.97 2242.17 2.010 620.00 0.00 0.00 118.30 2913.00 130.71 0.00 130.85 6.63 3.98 2037.81 1131.68 2.010 620.00 0.00 0.00 118.30 3792.00 131.66 0.00 131.79 6.29 4.11 2630.92 1511.58 2.010 620.00 0.00 0.00 118.30 4174.00 132.06 0.00 132.18 6.11 4.14 2886.91 1689.31 2.010 620.00 0.00 0.00 118.30 5069.00 132.93 0.00 133.04 5.71 4.20 3459.09 2121.12 ' 2.410 2340.00 0.00 0.00 119.70 2913.00 132.56 0.00 132.77 13.74 4.62 1179.34 785.86 2.410 2340.00 0.00 0.00 119.70 3792.00 133.42 0.00 133.64 14.04 4.94 1487.15 1011.93 2.410 2340.00 0.00 0.00 119.70 4174.00 133.76 0.00 133.99 14.06 5.05 1619.44 1113.05 ' 2.410 2340.00 0.00 0.00 119.70 5069.00 134.51 0.00 134.74 13.81 5.23 1923.96 1364.18 2.640 1200.00 0.00 0.00 120.80 2913.00 133.94 0.00 134.16 13.32 4.66 1003.10 798.25 2.640 1200.00 0.00 0.00 120.80 3792.00 134.90 0.00 135.18 16.21 5.34 1146.00 941.51 2.640 1200.00 0.00 0.00 120.80 4174.00 135.28 0.00 135.59 17.38 5.61 1204.15 1001.19 2.640 1200.00 0.00 0.00 120.80 5069.00 136.07 0.00 136.43 19.98 6.20 1331.75 1134.16 EFFECTIVE FIS MODEL FANNO CREEK Cross section 1.4 140- .095 L� 1 .055 L.4 .188 136- E 132: 1 e u 128. • a : t 124- • , • i • 0 n 120- . 116- • „ , I I I I I I I r I , i r , r I I , I I t 1 , r r 1 1 8 40 80 120 160 288 248 288 320 3618 408 440 480 Distance FANNO CREEK Cross section 1.43 145- < .875 }-.885-› .I 0 0 140. • • 6 • • 8 E 135- . 1 e • u 138: • a : imimm t 125- • i - o (p n 1Z8- ilf 115- • 110 I 11 1 I I t i I l i r I I T , 11 , I I , I I I I I 1 T I I I r „ I I ` r I T f , r t r i I „ I j l r I , l 160 248 320 488 480 560 648 728 880 880 968 1048 1120 Distance EFFECTIVE FIS MODEL FANNO CREEK Cross section 1.44 145- • .875 . 4I 16-.118--8d .I 8 8 140 5 . • • 8 8 E 135: • 1 • 138- ------___, _.= MIMI t 125 • 1 • I o : I r n 120- . 1 . • 1 1 115- • 110 I I I I I I I I I I I I I I I I I I I I I I I I I I , I I I I I I I I I I I I I I I I I I I I I I I 1 1 1 1 I , I , I I 160 248 328 400 480 560 640 728 808 888 960 1840 1128 Distance FANNO CREEK Cross section 1.47 148- .880 • r›ftl L..1 ' .188 - • 0 136- 5 • 2 E 132- • 1 : u 128: •\: a t 124- • i n 128- • 0 • . 116- • • 1.1.2 I I T I I T I I I I , I I I I T I , , I I 1 I I I , II I I I , I I I I I T I I I I I I I T I T T I , I I I I T I I I I 0 40 80 128 168 288 240 288 328 368 480 440 480 Distance EFFECTIVE FIS MODEL. : Run Date: 31MAR95 Run Time: 10:51:58 IMVersion: 6.52 Data File: fno_xtg.h Page 1 THIS RUN EXECUTED 31MAR95 10:51:58 HEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 THIS IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 AC HEC-2 PC FILE NAME : FANNC83C.DAT AC INPUT TAPE 400 FILENAME: FANNIC3T AC HYDSEC TAPE 531 FILENAME #11 : ICFANNO3 AC AC FANNO CREEK R.M. 0 - 13.1 AC 10-, 50-, 100-, AND 500-YEAR FLOODS AC DURHAM, TIGARD, BEAVERTON AND AC WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY AC JUNE 1980 REVISED OCTOBER 1983 AC AC STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD AC AC AC W&H PACIFIC MODIFICATIONS FOR EXISTING CONDITIONS - MARCH 1995 AC AC AC CROSS SECTIONS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA AC OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON AC TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 AC MAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AC AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR AC ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR AC FIELD SURVEYS BY USCE, PORTLAND DISTRICT AC ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ AC ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON AC DISCHARGES . AC START METHOD : NORMAL DEPTH, SLOPE = 0.002462 AC AC US ARMY ENGINEER DISTRICT, PORTLAND, OREGON AC ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT AC GEORGE HOLMES, CHIEF, HYDROLOGY SECT. AC KEN SOOERLIND, STUDY MANAGER ENG. AC AC HYDRAULICS BY NORMAN ASSOCIATES AC T1 FANNO CREEK, RM 0.02 TO RM 13.06 T2 10 YEAR FLOOD T3 FANNO CREEK J1 ICHECK INO NINV IDIR STRT METRIC HVINS Q WSEL FQ -1 2 0.002462 118.0 Existing Conditions Model Run Date: 31MAR95 Run Time: 10:51:58 HMVersion: 6.52 Data File: fno_xtg.h Page 3 SB 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 X1 1.11 0 0 0 40 40 40 0 0.1 X2 0 0 1 127.9 130.0 BT 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 8T 421 130.0 130.0 NC 0.100 0.095 0.050 X1 1.14 18 185 240 120 140 130 GR 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 GR 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 GR 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 GR 128.0 425 130.0 450 140.0 500 NC 0.090 0.110 0.055 X1 1.32 21 60 122 410 960 960 GR 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 GR 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 GR 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 CR 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 GR 134.0 332 NC 0.095 0.100 0.055 X1 1.40 18 175 250 420 310 400 GR 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 GR 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 CR 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 GR 136.0 310 138.0 380 140.0 425 NC 0.3 0.5 NH 4 0.075 838 0.050 874 0.085 1000 0.060 1044 X1 1.431 27 838 874 200 230 200 0 0 GR 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 GR 135.0 560 134.4 590 132.2 605 130.7 615 130.7 720 GR 130.7 804 122.9 816 122.7 824 122.9 838 118.6 843 GR 117.7 847 116.9 858 117.2 862 122.4 867 125.2 874 GR 125.1 879 124.6 889 127.5 893 130.5 896 134 950 GR 138 1000 140 1044 NH 4 0.075 838 0.050 874 0.110 1000 0.060 1044 _. ES8 1.10 1.5 2.35 0 26.85 4 727 2.0 116.9 116.9 X1 1.441 0 0 0 40 40 40 0 0 X2 0 0 1 130.4 132.2 BT 5 605 132.2 132.2 720 132.2 132.2 804 132.2 130.4 BT 896 132.2 130.5 950 134 134 NC 0.080 0.100 0.052 0.3 0.5 X1 1.47 19 262 300 150 170 200 GR 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 GR 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 GR 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 GR 115.3 295 120.0 300 130.0 350 140.0 447 Existing Conditions Model Run Date: 31MAR95 Run Time: 10:51:58 MVercion: 6.52 Data File: fno_xtg.hc" Page 26 SECNO XLCH ELTRD ELLC ELM1N Q CWSEL CRIWS EG 10*KS VCH AREA .01K 1.320 960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.431 200.00 0.00 0.00 116.90 2923.00 126.95 0.00 128.02 72.43 8.96 407.77 343.46 1.431 200.00 0.00 0.00 116.90 3809.00 127.92 0.00 129.20 75.46 9.92 489.08 438.49 1.431 200.00 0.00 0.00 116.90 4193.00 128.29 0.00 129.65 76.84 10.30 521.17 478.32 * 1.431 200.00 0.00 0.00 116.90 5093.00 129.07 0.00 130.65 81.21 11.19 588.06 565.15 1.441 40.00 132.20 130.40 116.90 2923.00 127.27 0.00 128.24 62.20 8.54 434.08 370.61 ISE 1.441 40.00 132.20 130.40 116.90 3809.00 128.31 0.00 129.46 64.50 9.44 521.95 474.28 1.441 40.00 132.20 130.40 116.90 4193.00 128.70 0.00 129.94 65.71 9.81 556.38 517.27 1.441 40.00 132.20 130.40 116.90 5093.00 129.56 0.00 130.98 68.43 10.62 631.75 615.66 * 1.470 200.00 0.00 0.00 115.30 2923.00 128.66 0.00 128.90 12.43 4.69 1028.53 829.24 • 1.470 200.00 0.00 0.00 115.30 3809.00 129.91 0.00 130.17 12.31 5.03 1272.83 1085.52 * 1.470 200.00 0.00 0.00 115.30 4193.00 130.41 0.00 130.67 12.15 5.13 1399.96 1203.14 * 1.470 200.00 0.00 0.00 115.30 5093.00 131.49 0.00 131.76 11.55 5.28 1704.04 1498.42 1.530 490.00 0.00 0.00 115.70 2913.00 129.18 0.00 129.34 8.34 4.19 1540.65 1008.87 1.530 490.00 0.00 0.00 115.70 3792.00 130.43 0.00 130.59 7.56 4.30 1985.02 1379.46 1.530 490.00 0.00 0.00 115.70 4174.00 130.92 0.00 131.07 7.31 4.35 2163.14 1543.28 1.530 490.00 0.00 0.00 115.70 5069.00 131.98 0.00 132.13 6.90 4.47 2554.53 1929.39 2.000 2400.00 0.00 0.00 117.60 2913.00 130.67 0.00 130.78 5.12 3.58 2107.50 1286.90 2.000 2400.00 0.00 0.00 117.60 3792.00 131.77 0.00 131.87 4.62 3.63 2790.56 1764.79 2.000 2400.00 0.00 0.00 117.60 4174.00 132.21 0.00 132.31 4.44 3.64 3071.76 1981.02 2.000 2400.00 0.00 0.00 117.60 5069.00 133.18 0.00 133.27 4.09 3.68 3707.52 2506.75 2.010 620.00 0.00 0.00 118.30 2913.00 130.92 0.00 131.04 5.77 3.77 2169.86 1212.73 2.010 620.00 0.00 0.00 118.30 3792.00 131.98 0.00 132.09 5.26 3.83 2837.14 1653.88 2.010 620.00 0.00 0.00 118.30 4174.00 132.41 0.00 132.51 5.05 3.84 3117.06 1857.65 2.010 620.00 0.00 0.00 118.30 5069.00 133.36 0.00 133.45 4.64 3.87 37.6.62 2354.25 * 2.410 2340.00 0.00 0.00 119.70 2913.00 132.59 0.00 132.80 13.45 4.59 1190.98 794.15 * 2.410 2340.00 0.00 0.00 119.70 3792.00 133.50 0.00 133.72 13.37 4.85 1520.51 1037.22 * 2.410 2340.00 0.00 0.00 119.70 4174.00 133.87 0.00 134.09 13.24 4.93 1663.36 1147.10 * 2.410 2340.00 0.00 0.00 119.70 5069.00 134.69 0.00 134.90 12.61 5.04 1996.06 1427.49 2.640 1200.00 0.00 0.00 120.80 2913.00 133.95 0.00 134.17 13.25 4.65 1004.99 800.12 2.640 1200.00 0.00 0.00 120.80 3792.00 134.94 0.00 135.22 16.03 5.32 1151.34 947.23 2.640 1200.00 0.00 0.00 120.80 4174.00 135.32 0.00 135.63 17.13 5.58 1211.16 1008.38 2.640 1200.00 0.00 0.00 120.80 5069.00 136.14 0.00 136.50 19.52 6.15 1343.98 1147.44 Existing Conditions Model FANNO CREEE Cross section 1.431 144- .075 Dd -.085-I I • 8 8 140- 5 . • 6 • 8 E 136- • 1 u 132: • a t 128- . • 1 • o n 124- • 120- . 116 160 240 320 400 480 568 640 720 800 888 960 1040 1120 Distance FANNO CREEE Cross section 1.441 144: -I • ..075 • -.116- •I • 0 140- • 5 6 0 E 136- . 1 u132- t 128- i - 1 „ o n124- • 120- 116 i 160 240 320 400 480 560 640 720 808 880 960 1048 1120 Distance EXISTING CONDITIONS MODEL Run Date: 31MAR95 Run Time: 10:58:39 version: 6.52 Data File: fno_prop.hc Page 1 THIS RUN EXECUTED 31MAR95 10:58:39 HEC-2 WATER SURFACE PROFILES Version 4.6.2; May 1991 THIS IS AN ARCHIVAL RUN ALL DATA AND RESULTS ARE SAVED ON UNIT 96 kC HEC-2 PC FILE NAME : FANNC83C.DAT AC INPUT TAPE 400 FILENAME: FANNIC3T AC HYDSEC TAPE 531 FILENAME #11 : ICFANN03 AC AC FANNO CREEK R.M. 0 - 13.1 AC 10-, 50-, 100-, AND 500-YEAR FLOODS AC DURHAM, TIGARD, BEAVERTON AND AC WASHINGTON COUNTY, OREGON FLOOD INSURANCE STUDY AC JUNE 1930 REVISED OCTOBER 1983 AC AC STUDY REACH : CONFLUENCE WITH TUALATIN R TO U/S OF SCHOLLS FERRY ROAD AC AC AC W&H PACIFIC MODIFICATIONS FOR PROPOSED CONDITIONS AT DURHAM ROAD X-ING AC MARCH 1995 AC AC AC CROSS SECTICNS: CHANNEL BY OLSON ENGINEERING, VANCOUVER, WA AC OVERBANK (PHOTOGRAMMETRIC) BY SPENCER B. GROSS, BEAVERTON AC TOPOGRAPHY : CITY OF TIGARD TOPO, 1974; CITY OF BEAVERTON TOPO, 1971 AC MAPS USED : WASHINGTON CO. FIS WORK MAPS 78, 79, 80, 81, 104, 105, 106 AC AERIAL PHOTOGRAPHY DATED 9 MAY 1977 BY WAC CORP, EUGENE, OR AC ORTHOPHOTO BASE BY DAVID C. SMITH, PORTLAND, OR :C FIELD SURVEYS BY USCE, PORTLAND DISTRICT AC ADDITIONAL FIELD CONTROL BY SPAN INTERNATIONAL, PHOENIX, AZ AC ADDITIONAL HORIZONTAL CONTROL BY SPENCER GROSS, BEAVERTON AC DISCHARGES . AC START METHOD : NORMAL DEPTH, SLOPE = 0.002462 AC ****** =.0 US ARMY ENGINEER DISTRICT, PORTLAND, OREGON ENGINEERING DIV, PLANNING BRANCH, HYDROLOGY SECT AC GEORGE HOLMES, CHIEF, HYDROLOGY SECT. AC KEN SODERLIND, STUDY MANAGER ENG. AC AC HYDRAULICS BY NORMAN ASSOCIATES AC ******* '1 FANNO CREEK, RM 0.02 TO RM 13.06 72 10 YEAR FLOOD '3 FANNO CREEK 11 ICHECK IND NINV IDIR STRT METRIC HVINS G WSEL FQ -1 2 0.002462 118.0 Proposed Conditions Model Run Date: 31MAR95 Run Time: 10:58:39 Version: 6.52 Data File: fno_prop.h Page 3 SB 1.05 1.5 2.6 0 22.0 20 1154 3.49 110.0 110.0 X1 1.11 0 0 0 40 40 40 0 0.1 X2 0 0 1 127.9 130.0 BT 4 155 132.0 132.0 195 131.8 128.0 420 130.0 126.2 BT 421 130.0 130.0 NC 0.100 0.095 0.050 X1 1.14 18 185 240 120 140 130 GR 130.0 0 124.0 50 122.0 95 120.0 130 116.0 185 GR 114.0 210 112.3 216 112.1 219 110.3 224 114.0 225 GR 118.0 230 120.0 240 122.0 280 124.0 385 128.0 385 GR 128.0 425 130.0 450 140.0 500 NC 0.090 0.110 0.055 X1 1.32 21 60 122 410 960 960 GR 134.0 0 132.0 50 130.0 60 120.0 65 118.0 70 GR 115.3 74 115.2 80 114.7 83 114.6 87 114.2 91 GR 113.1 96 113.1 99 118.0 110 120.0 122 122.0 130 GR 124.0 225 126.0 252 128.0 280 130.0 300 132.0 313 GR 134.0 332 NC 0.095 0.100 0.055 X1 1.40 18 175 250 420 310 400 GR 134.0 0 130.0 25 126.0 60 124.0 175 120.0 195 GR 116.5 203 116.4 209 115.9 212 115.8 216 115.4 220 GR 114.3 225 114.3 228 120.0 230 132.0 250 134.0 280 GR 136.0 310 138.0 380 140.0 425 NC 0.3 0.5 NH 3 .06 839 0.050 865 .06 1044 X1 1.431 25 839 865 180 210 180 0 0 GR 140.3 185 140.6 300 140.1 400 139.7 456 138.8 500 GR 138.06 560 138.06 590 138.06 605 138.06 615 138.06 720 GR 138.06 799 131.0 799 120.3 814 120 839 118.6 843 GR 117.7 847 116.9 858 117.2 862 120 865 120.1 868 GR 132.6 897 138.06 897 138.06 950 138.06 1000 140 1044 NH 3 .06 839 0.050 865 .06 1044 SB 1.10 1.5 2.35 0 44.8 0 1074 1.5 116.9 116.9 X1 1.441 0 0 0 60 60 60 0 0 X2 0 0 1 132.6 138.06 BT 5 605 138.06 138.06 720 138.06 138.06 799 138.06 132.6 BT 897 138.06 132.6 950 138.06 138.06 NC 0.080 0.100 0.052 0.3 0.5 X1 1.47 19 262 300 150 170 200 GR 140.0 0 138.0 10 136.0 45 134.0 60 130.0 85 GR 130.0 150 126.8 155 124.0 230 122.0 262 120.0 268 GR 117.5 273 117.4 279 116.9 282 116.8 286 116.4 290 GR 115.3 295 120.0 300 130.0 350 140.0 447 Proposed Conditions Model Run Date: 31h1AR95 Run Time: 10:58:39 ersion: 6.52 Data File: fno_prop.hc Page 26 SECNO XLCH ELTRD ELLC ELFIIN 0 CWSEL CRIWS EG 10*KS VCH AREA .01K 1.320 960.00 0.00 0.00 113.10 2923.00 124.88 0.00 125.29 25.45 5.33 718.35 579.45 1.320 960.00 0.00 0.00 113.10 3809.00 125.94 0.00 126.40 26.81 5.85 909.96 735.59 1.320 960.00 0.00 0.00 113.10 4193.00 126.33 0.00 126.82 27.41 6.05 986.21 800.95 1.320 960.00 0.00 0.00 113.10 5093.00 127.17 0.00 127.71 28.77 6.49 1153.71 949.45 1.400 400.00 0.00 0.00 114.30 2923.00 126.11 0.00 126.66 43.49 6.09 584.15 443.23 1.400 400.00 0.00 0.00 114.30 3809.00 127.18 0.00 127.75 41.19 6.41 784.87 593.49 1.400 400.00 0.00 0.00 114.30 4193.00 127.59 0.00 128.17 40.52 6.53 864.37 658.71 1.400 400.00 0.00 0.00 114.30 5093.00 128.46 0.00 129.06 39.45 6.79 1038.25 810.83 1.431 180.00 0.00 0.00 116.90 2923.00 126.78 0.00 127.41 35.73 7.36 498.67 489.02 1.431 180.00 0.00 0.00 116.90 3809.00 127.80 0.00 128.59 39.04 8.28 581.60 609.62 1.431 180.00 0.00 0.00 116.90 4193.00 128.19 0.00 129.05 40.58 8.66 613.73 658.25 1.431 180.00 0.00 0.00 116.90 5093.00 129.00 0.00 130.02 44.12 9.50 683.23 766.72 1.441 60.00 138.06 132.60 116.90 2923.00 127.05 0.00 127.63 31.53 7.06 520.84 520.54 1.441 60.00 138.06 132.60 116.90 3809.00 128.11 0.00 128.83 34.55 7.95 607.05 648.05 1.441 60.00 138.06 132.60 116.90 4193.00 128.51 0.00 129.30 35.83 8.31 641.14 700.50 1.441 60.00 138.06 132.60 116.90 5093.00 129.37 0.00 130.30 38.72 9.09 715.45 818.46 1.470 200.00 0.00 0.00 115.30 2923.00 127.80 0.00 128.14 18.83 5.47 865.13 673.66 1.470 200.00 0.00 0.00 115.30 3809.00 129.02 0.00 129.38 17.94 5.76 1098.01 899.41 1.470 200.00 0.00 0.00 115.30 4193.00 129.50 0.00 129.86 17.68 5.89 1191.41 997.21 1.470 200.00 0.00 0.00 115.30 5093.00 130.54 0.00 130.91 16.96 6.10 1436.12 1236.70 1.530 490.00 0.00 0.00 115.70 2913.00 128.57 0.00 128.79 11.72 4.77 1331.92 851.06 1.530 490.00 0.00 0.00 115.70 3792.00 129.76 0.00 129.97 10.47 4.87 1743.97 1171.85 1.530 490.00 0.00 0.00 115.70 4174.00 130.23 0.00 130.44 10.07 4.91 1913.14 1315.58 1.530 490.00 0.00 0.00 115.70 5069.00 131.24 0.00 131.45 9.35 5.00 2282.67 1657.50 2.000 2400.00 0.00 0.00 117.60 2913.00 130.47 0.00 130.60 5.78 3.76 1988.78 1211.39 2.000 2400.00 0.00 0.00 117.60 3792.00 131.48 0.00 131.60 5.38 3.85 2613.67 1634.35 2.003 2400.00 0.00 0.00 117.60 4174.00 131.89 0.00 132.01 5.22 3.89 2871.86 1826.21 2.000 2400.00 0.00 0.00 117.60 5069.00 132.78 0.00 132.90 4.90 3.95 3452.15 2289.72 2.010 620.00 0.00 0.00 118.30 2913.00 130.75 0.00 130.89 6.45 3.94 2063.47 1147.26 2.010 620.00 0.00 0.00 118.30 3792.00 131.73 0.00 131.86 6.05 4.05 2674.73 1541.17 2.010 620.00 0.00 0.00 118.30 4174.00 132.13 0.00 132.25 5.87 4.08 2932.84 1722.30 2.010 620.00 0.00 0.00 118.30 5069.00 133.00 0.00 133.12 5.50 4.14 3510.54 2162.07 2.410 2340.00 0.00 0.00 119.70 2913.00 132.56 0.00 132.77 13.68 4.62 1181.76 787.58 2.410 2340.00 0.00 0.00 119.70 3792.00 133.43 0.00 133.66 13.91 4.92 1493.68 1016.87 2.410 2340.00 0.00 0.00 119.70 4174.00 133.78 0.00 134.01 13.91 5.03 1627.33 1119.15 2.410 2340.00 0.00 0.00 119.70 5069.00 134.54 0.00 134.77 13.60 5.20 1935.58 1374.31 2.640 1200.00 0.00 0.00 120.80 2913.00 133.94 0.00 134.16 13.30 4.66 1003.50 798.64 2.640 1200.00 0.00 0.00 120.80 3792.00 134.91 0.00 135.19 16.18 5.34 1147.03 942.85 2.640 1200.00 0.00 0.00 120.80 4174.00 135.29 0.00 135.59 17.34 5.61 1205.37 1002.44 2.640 1200.00 0.00 0.00 120.80 5069.00 136.08 0.00 136.44 19.90 6.19 1333.65 1136.24 Proposed Conditions Model FANNO CREEK Cross section 1.431 • • 144- ..860 . •1 .060 G- e 140- — 7-----7 5 • • 0 E 136- • 1 ✓ 132: • a : j i 128:• 0 : n 124.: . . . . l i 128: . l • 116 , I „ i „ I , i , , , , i I „ I I , I I , i I , 7 , I I , , , i I , I , i , I „ i „ I I I I , I I i I , 1 I l 160 240 320 488 480 560 640 720 800 880 960 1040 1120 Distance FANNO CREEK Cross section 1.441 144 -.868 G-I .060—f 0 140- 5 • • _0-_ /r E 136 . • 132: --- • a : I t 1Z8: • o : n 124: ' I , 120- . ,{,, ;, •.1 160 240 320 400 480 560 648 720 800 880 960 1040 1120 Distance PROPOSED CONDITIONS MODEL Creative Solutions ... Su, Jr Service Wt 1 PACIFIC 11405 s.w.N+meur Ave. 503 626-0455 Planning Surveying Environmental Beaverton.OR 970H-7120 ( ) g urve y g fax(503)526-0775 Engineering Landscape Architecture Services To: Will D'Andrea Date: October 10, 1995 City of Tigard Project Number: 4-0204-1302 13125 SW Hall Blvd. Project Name: Durham Road Tigard, OR 97223 Regarding: Sensitive Lands Permit RECEIVED PLEASE NOTIFY US IMMEDIATELY AT (503) 626-0455 IF THERE ARE ANY OCT 1 2 1995 PROBLEMS RECEIVING THIS TRANSMISSION COMMUNITY DEVELOPMENT We are Sending: These Are Transmitted: Copied To: x Attached x For Your Info/File Facsimile x As Requested #of Pages Including Cover For Review&Comment Copies Description 1 Copy of approved fill/removal permits from D.S.L. and the Corps of Engineers Comments: Will, Here is the copy of the Fill/Removal permits as needed for the Sensitive Lands Permit for the Durham Road Improvement Project. Signed Ken Rehms !- _____:.__I% , - OnOn DEPARTMENT OF TRANSPORTATION DATE: August 30, 1995 TO: Bill I h l y Roadway Engineering Section Capital Projects Coordinator Specifications Unit Washington County Land Use and Transportation FILE CODE: 155 North First Avenue, Suite 350 Hillsboro OR 97124 C).—\--°-/Y C3A.:,--4 FROM: Alan Lively Permit Liaison SUBJECT: Fill/Removal permits Section: SW Hall Blvd - SW Upper Boones Ferry Road Highway: Beaverton - Tualatin (Durham Rd. ) County: Washington Enclosed are the completed fill/removal permits from the Oregon Division of State Lands and the U.S . Army Corps of Engineers for the subject project. If you have any questions on the permits please contact me at telephone number (503) 986-3782 . Enclosures idy L,,LI v LE.,-- AUG 31 1?) ;D WASHINGTON COUNTY LUT/CAPITAL PROJECTS MANAG-MENT Apo mit. Qintt K4'.'f ) • Transportation Building 734-3122(1-93) Salem, OR 97310 I• n July 20, 1995 1 1 ( , Alan Lively DSL Oregon State Highway Division Room 200, Transportation Bldg . Salem, OR 97310 DIVISION OF Re: General Authorization for Road Construction STATE LANDS DSL Project No . GA 9149 Bridge Replacement--Fanno Creek STATE LAND BOARD SW Hall Blvd. to SW Upper Boones Ferry Road JOHN A. KITZHABER Governor Dear Mr . Lively: PHILKEISLING Secretary of State On June 29 , 1995 , we received a complete application to JIM HILL conduct removal or filling activities for road State Treasurer construction purposes under the General Authorization for Road Construction. Based on our review of your 775 Summer Street NE application, and comments provided by interested resource (503) 8-OR 3805 01337 (503) 378-3805 agencies , we hereby authorize the project, subject to the FAX (503) 378-4844 conditions outlined in OAR 141-89-015 (enclosed) and to TTY (503) 378-4615 the following additional conditions : 1 . All in-water work shall be done between July 1 to September 30 . This General Authorization will be reviewed in July 1996 . Projects not initiated at that time must be resubmitted for authorization. This authorization permits only the work described in the application. Please notify this office when the work is complete . If additional work needs to be done in the future, a new application must be submitted. You must also receive authorization, when required, from the U. S. Army Corps of Engineers and local planning department before beginning construction. If you have any questions regarding this authorization or its conditions, please contact me. ‘1) Sincerely, a,/,e/C2 „Ae William L. Parks Natural Resource Coordinator Field Operations WLP/jdl/wprf19 :400 Enclosure cc : Dale Haslem, U.S. Army Corps of Engineers Jay Massey, Oregon Dept . of Fish & Wildlife Habitat Conservation Division, ODFW Mike Wiltsey, Dept . of Environmental Quality General Authorization for Certain Road Construction Projects 141-89-015 ( 1) This rule sets forth conditions under which a state, county or city road department may, without obtaining a removal-fill permit, place or remove material within non-estuarine waters of the state for the purpose of widening, replacing or realigning existing roads and bridges . (2) This-general authorization is made pursuant to ORS 196 . 850 and is based upon the determination that the activities are substantially similar in nature, would cause minimal individual and cumulative environmental impacts and would not result in long-term harm to water resources of the state . (3) To be eligible for this general authorization, a road. construction project must conform to the following : (a) No more than 5000 cubic yards of material shall be filled, removed, or altered in waters of the state for a single and complete project ; (b) No material shall be placed in excess of the minimum needed for project construction; (c) Fill in wetlands shall not exceed 0 . 5 acres ; .(d) The activity shall be conducted during the time period specified by the Oregon Department of Fish and Wildlife; (e) Except for designed structures, no concrete or asphalt shall come into contact with the active flowing stream; (f) All reasonable attempts shall be made to construct the structures using land based equipment; (g) Only clean, durable rock shall be used as riprap. No concrete or asphaltic concrete shall be used; (h) The project shall be the least environmentally damaging practicable alternative; (i) Fill and removal activities shall not prevent or interfere with normal fish passage; (j ) Notwithstanding this general authorization, fill and removal activities within State Scenic Waterways must have prior Land Board authorization as provided in ORS 390 . 835 (2) ; (k) The activity shall not adversely affect state or federal threatened or endangered species or their critical habitat; (1) Mitigation shall be required pursuant to 196 . 825(5) and ORS 196 . 800 ( 10) to mitigate for adverse impacts to waters of the state; Op- ,,k; 34 DEPARTMENT OF THE ARMY roc ""'/ ,\ PORTLAND DISTRICT,CORPS OF ENGINEERS f, +�' c' Iv P.O.BOX 2946 1p `ill ':' PORTLAND,OREGON 972082946 �r+tcs u� REPLY TO ATTENTION OF: August 28, 1995 Operations Division SUBJECT: Permit Application ID No: 95-00347 Alan Lively Room 200, Transportation Bldg Salem, Oregon 97310 Mr. Lively: : We have reviewed your application (Enclosure 1) to replace and widen an existing bridge as described and shown in the attached application documents near SW Hall Blvd/SW Upper Boones Ferry Road at Fanno Creek, near Washington County, Oregon. Your project has been reviewed by the resource agencies and qualifies for authorization under Regional Permit 071-OYA-2-007143 (Enclosure 2) , subject to the terms and conditions, providing you secure a State Fill/Removal Permit from the Oregon Division of State Lands. Be aware that other authorizations from Federal, state, or local governments may be required by law. If you have any questions regarding the authorization of your project or the terms and conditions of the attached Regional Permit, please contact me at the above address or telephone (503) 326-6996. Sincerely, a a e H Ha a em em Project Manager Regulatory Branch Enclosures Copies Furnished: ODSL w/Encls - Parks OP-GP w/Encls - Black . � ' r - JOINT Q >{°� ■ E.l • US Armor Cor s PERMIT APPLICATION FORM '- i . ° r THIS APPLICATION WILL MEET THE REOUiREMENIS oc BOTH AGErrCIES .1E''w of Engineers ' Portland District ' AGEIyclEStrutt%asstG>ntNtms= , x. Corps Action ID Number 95-3471-- Oregon Division of State Lands Number RF9149 • .MYF 'Ti t.;;r SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY ;Pis- g ,4,. rr., 4i District Engineer State of Oregon t'-y .. ATTN: CENPP-PE RP Division of State Lands , is,... ....r. P.O. Box 2946 775 Summer Street NE - Portland, OR 97208-2946 - Salem, OR 97310 503/326-7730 503/378-3805 I' 1) Applicant Name Alan Lively ---—"' .business# (503)986-3782 and Address • Room 200,Transportation Bldg. home phone# Salem, OR 97310 FAX# (503)986-3749 O Co-Applicant Same business phone# home phone# O Authorized Agent FAX# O Contractor ' Name and Address • Property Owner Same business phone# (if different than applicant) home phone# Name and Address FAX# Q - PROJECT LOCATION • Street, Road or other descriptive location Leoal Description Durham Road Quarter Section • Township Range (SW Hal!Blvd. To SW Upper Boones Ferry Rd.) NW 13 T2S R 1 W . In or Near(City or Town) County - Tax Map# Tax Lot# Tigard Washington. 2S 1W 13 AB , 800 2S 1W 13 BA 100,400 Waterway River Mile Latitude Longitude Fenno Creek . 1 45'22'N 122'45'W Is consent to enter property granted to the Corps and the Division of State Lands? 0 Yes 0 No 0 PROPOSED PROJECT INFORMATION " Activity Type: Q Fill 0 Excavation (removal) 0 In-Water Structure 0 Maintain/Repair on Existing Structure Brief Description: Replace existing bridge. Place riprap to protect bridge abutment. • Fill will involve cubic yards annually and/or 402 cubic yards for the total project 402 cubic yards in a wetland or below the ordinary high water or high tide line Fill will be Q Riprap 0 Rock 0 Gravel 0 Sand 0 Silt . 0 Clay 0 Organics. 0 Other Fill Impact Area is 0 08 • Acres; varies length; varies width: 3 ff depth Removal will involve cubic yards annually and/or; 402 cubic yards for the total project 402 cubic yards below the ordinary high water or high tide line • Removal will be 0 Riprap 0 Rock 0 Gravel 0 Sand Q Silt, © Clay" 0 Organics O Other Removal Impact Area is 0 08 Acres; varies length: varies width; 3 ft. depth . Estimated Start Date July 1996 Estimated Completion Date September 30. 1996 W• ill any material,construction debris, runoff, etc. enter a wetland or waterway?0 Yes 0 No . If yes, describe the type of discharge and show the discharge location on the site plan ENCLOSURE 1 • • • .7% PROPOSED FRO.IECT PL:RPCSE S. DESCR • •. • Project Purpcse and Need. The project is intended to relieve traffic congestion and improve trefic safety on Durham Road, an important arena/connecting Interitate 5 with High■say 991V, , • . . , ' . . Project Descripton: The project will widen a two-lane road with inadequate shoulderi, and replace a narrow five-span, wood-piling supported bridge with a modemjoad with two 12"travel lades, a 14' . center turn lane, 5 bike lanes and 6.5'sidewalks. The proposed bridge will be a clear span with abutment in the same location as existing. The area around the abutment will be • - , • protected with Class 700 riprap, which will extend 3'be/ow OHW(120). An area of about 4,000 square feet of stream bank downstream from the bridge wi//be graded down to OHW to mitigate the floodplain impacts of the new embankment. NO WETLAND IMPACTS. • _ . . How many project drawing sheets are included‘vith this application? 4 • • NOTE: A complete application must include drawings and a location'map submitted on separate 8 V2 X 11 sheets. • 5 PROJECT IMPACTS AND ALTERNATIVES • Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetand. A design with no fill below the elevation of OHW(120'was considered;however, it was found to be necessary to extend the nprap 3' below OHW to protect adequately the abutment from scour by the creek. • Describe what measures you vvill use(before and after construction)to minimize impacts to the waterway or wetiand. • • 1. In-water-work wi//be performed only during period set out by ODFW(July 1-Sept. 30). 2. No concrete or asphalt will come into contact with the active flowing stream. 3. Only clean, durable rock shall be used for riprap. . . . 4. No petroleum products, chemicals or other deleterious materials shall enter the water. 5. Removal of existing woody vegetation wi//be minimized, and limited to construction and access areas. • 6. All disturbed streambank and floodplain areas will be seeded with grass and planted with native shrubs and trees to prevent erosion and restore the area. 7. Riprap shall be placed using land-based equipment • NOTE: If necessary, use additional sheets. ------- • - • — _ - • . •- • - . • • ly u. ADDITIONAL INFOFIr.n11CN Adjoining Property Ov,ners and T t-.c.. ..dd:esses and Phone Numbers Duncan.John&Janice 15055 SW 74th Avenue. Tigard CR 97223 Johnson, Carl 200 James Street, 4-407. Edmonds, WA 9S020 • Hambach, Harold&Mildred • 7735 SW Durham Road, Tigard,OR 97224. • �t. ►._, Has the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon in the past, -�f e.g..,wetland delineation violation, permit,lease request, etc.? 0 YES 0 NO • If Yes,what identification number(s)were assigned by the respective agencies: Corps# • State of Oregon • • Q CITY I COUNTY PLANNING DEPARTMENT AFFIDAVIT (to be completed by local planning official) O This project is not regulated by the local comprehensive plan and zoning ordinance. O This project has been reviewed and is consistent vvith the local comprehensive plan and zoning ordinance. O This project has been reviewed and is not consistent with the local comprehensive plan and zoning ordinance. • O Consistency of this project with the local planning ordinance cannot be determined until the follovr'ng local approval(s)are obtained: O Conditional Use Approval 0 Development Permit O Plan Amendment 0 Zone Change O Other • An application 0 has 0 has not been made for local approvals checked above. • • Signature(of local planning official) Title City/County Date COASTAL ZONE CERTIFICATION • • If the proposed activity described in your permit application is within the Oregon coastal zone,the following certification is • required before your application can be processed. A public notice will be issued with the certification statement which will be forwarded to the Oregon Department of Land Conservation and Development(DLCD)for its concurrence or objection. For additional information on the Oregon Coastal Zone,Management Program, contact the department at 1175 Court Street NE, Salem, Oregon 97310 or call 503-373-0050. • • - CERTIFICATION STATEMENT • I certify that,to the best of my knowledge and belief, the proposed activity described in this application complies with the approved Oregon"Coastal Zone Management Program and will be completed in a manner consistent with the program. / pc, • • Print/Type Name file • nr)lir?nt_Sion:tI1ro 11;--10 • • • g% • .- SIGNATURE FOR JOINT APPLICATION - (REQUIRED) Application is hereby made for the activities described herein. I certify that I am familiar with the informatit5n contained in the application, and,to the best of my knowledge and belief,this information is true, complete, and accurate. I further certify that I possess the authority including the necessary requisite property interests to undertake the proposed activities. I understand that the granting of ! other permits by local, county,state or federal agencies does not release me from the requirement of obtaining the permits requested • before commencing the project. I understand that local permits may be required before the state removal-fill permit is issued. understand that payment of the required state processing fee does not guarantee permit issuance. i0 W L.l'6,--:-;-- L. tky PC, I l V L U iSo . -- . Print/Type Name • - 1 ' (coapplicant) , Title -- • ��� � ,gym .,,-e�. ' . 3 •, e 2_ 6 ) I c i . ;- Applicant Signature .. (coapplicant)- : . Date 1 '',':.,-.4-,•;-.-. .- . '•,. _ • N;; : I certify,that I may act as the duly authorized agent of the applicant. . ar . • PrintfType Name , Title . • Authorized Agent Signature Date SUPPLEMENTAL WETLAND IMPACT INFORMATION' . (FOR WETLAND FILLS ONLY) _ . Site Conditions of Impact Area • Impact area is 0 Ocean 0 Estuary 0 River 0 Lake Q Stream . 0 Freshwater Wetland . Note: Estuarian Resource Replacement is required by state law for projects involving intertidal or tidal marsh alterations. A separate Wetlands Resource Compensation Plan may be appended to the application. . Has a wetland delineation been completed for this site? Q Yes 0 No • If yes by whom: SRI/Shapiro • ' Describe the existing Physical and biological character of the wetland/waterway site by area and type of resource(use separate sheets - and photos,if necessary). Fenno Creek is an important perennial stream draining the eastern Washington County urbanizing area. It flows into the Tualatin River about a mile below the project. The creek has a mean annual flow of 64 c.f.s. in the project area. Flow and water quality vary widely depending on rainfall events due to the urbanized nature of the watershed. The stream is deeply incised, with a narrow but • fairly undisturbed riparian zone including the following species:Oregon ash, red alder, big-leaf maple, western wahoo, and hazelnut. Himalayan blackberry and reed canarygrass dominate a more disturbed area. Wildlife use includes ducks and songbirds. Such riparian zones typically function as a mitigation corridor for mammals such as raccoon and opossum, which are adapted to an, urbanizing environment. There are no wetlands impacted by this project. Wetlands have been identified beyond the project boundaries(see attached sheet). . Resource Replacement Mitigation Describe measures to be taken to replace unavoidably impacted wetland resources • ' Removal of woody vegetation will be minimized within 60'of OHW. Where complete removal is unnecessary, e.g. for construction access, above-ground portions of trees and shrubs will be(rimmed off so as to allow natural regeneration. The creek bank grading area and other disturbed areas outside the toe of the riprap will be seeded with grasses and planted with native shrubs and trees. The immediate creek bank zone will be planted with willow and dogwood. The remaining area will be planted with Douglas spiraea, vine maple. salmonberry, oregon ash and bigleaf maple. Because this information is not necessary for a complete application, you may submit this sheet and other environmental information after submriing your application. , . • • • . . .., .. , • . . Sec. 13, T. 2S., R. 1 Val., W.M. I o f 1 (!-- O i\, • I . r l i i Z ; 1, ., . . _ • 1 . .:, . .-.' , . 1 1 ' ( / z. .. <4...i 0\:- ,) - . ,\,.....:.:_...... c".7)1.. - • ' t) .(■,:i • .• , / . / .. ..: rt ' Pn'I�on�t 9M�fearo. J 1 .. ! / I / ,,� / f ...--"�S ` der I li, :,:„.,,.,-„.:.: -'-',";.7.:7 . .---*". W 4 -, / • r "' ' - - ' -,'-'''' • ....5;\''-..7"."---..in'' ''''•2 — 10.17...,•, Aairoger _ r' ,L,-, •— Prmonenl prkr5,. o_emv. Inn V�. ! 1 tic.fi 4/L— / iffp S •+i — �w1!/ DIM ∎% w a •[ i s 0 i :.7,1b1111111114.0, , me dia IrMa:, --- -zdoi.=.--- .-..-.,::.si.-4.--- --.: — ' ' tt, "r i ® m J.L j/ ♦r--- _.. 's/ MS , I - •• : Gat► - _..._ ' >E�tfffft•1t11•VVifSd >�'S2g�c__:_C ,_., ' N • e �n - / .. , . 0 •(..;. -:.� `'•: fib / h + I( l Coarnmf ,Prmmenl 9oPe G.P-.f' { _ ._—_r •'- \.__._.....____ r� .\ , \ .• \ . • _...' ` � ' + ma ' a \\\ + x\ o . am' ,p \°C).„\e. y / . Ima) . ''`\ /- . \\A, `\ /. • J O Sta. 123+23 Rt. 26.5' • 23 Sta. 124+75 Lt. 44.0' Const. Type " 12 4A" Inlet Reconst. Manhole (By Others) O Inst. 12 Sew. Pipe — 55' Const. Monhole • • • Inst. 15' Sew. Pipe — 330' 13 Reconst. Manhole Inst. 15" Sew Pipe — 61' . (For Details, See Sheet 2B-3) 3 Sic. 124+70 Lt. 26.5' • 14 . Const. Single Span Conc. Bridge 0. Const. Storm Sewer Outfol1 i • . Const. Type "4A' Inlet w/ Orifice Plate (For Bridge Plans, See Sheets 13-13G) (For Details, See Sheet 2B-4) ti Inst. 15 Sew. Pipe — 55' o ••(For Details, See Sheet 2B-4) Relocate Utility Pole — 7 (By Others) 25 Const. 5' Conc. Sidewolk Toper ,'r 16 From End of Bridge Pane! a 44 Ste. 124+70 Rt. 26.5' i 9 Const. Compost Storm Filter • As Shown — 4 • Z (For Details, See Sheet 2E) Const. Type "4A" Inlet ( 26 For Grading Under Bridge, W • Inst. 15 Sew. Pipe — 147' Inst. 6' Sew. Pipe — 11' g 20 • Jnst. Utility Pole — a (By Others) See Sheet 28-6 a O Sto. 126+87 Lt.• ix Rt. 26.5' 27 Sta. 124+80 Lt. 35.0'•Cons!. d Type T "Mo . 4A' Inlet — 2 22 Const. 6' Sedimentation Manhole y Inst. 6" Thick Conc. Sidewclk with • Inst. 12 Sew. Pipe — 72' 6- X 6" 10Ga Mesh Inst. 10" Sew Pipe — 19' • 11 Remove Extg. Wood Shock SIo. 124+17 to Sta. 125+07 • (For Defogs, See Sheet 2B-3) • • ' W -4: • • ROADWAY PLAN FIGURE wal • A ;d,.^ ..5a.....1r�L�. a••.�• . 4 • As -r LLaYLIRLM. Olt 1950-7170. Durham Road — Fanno Creek Crossing . r1.0.e: 1:.57,e7e-5eS3 '-"':7C-°"°" SW Hall Blvd. - SW Upper Boone s Ferry Rd. CJ 4. Extg. Ground 10' CL 700 Rip—Rop Per Detail B, 2B-4, Finish Grade _ ) I,(•.%(•).)( J r Varies ,err )(J )(.J ? :)() S-)0C Conc. Embankment Extg. 12" Woter Moin (By Others) SECTION "q— q„ (Existing Water Main Coverage) N.T.S. • Extg. Ground 1.0% 5:1 Cut Slope ORDINARY HIGH WATER ELEV. 120 --------Finish Grade _ SECTION "B—B" (Typical Fonno Creek Bank Grading) • N.T.S. i j Extg. Ground J y Extg. Ground` // � "% ∎ r-" 1.5:1\ ' • ;� ; /1.5:1 ''• `N' ~' 1.0% \� �■—'�1.07: r. ELEV. 120' cu 3,'�. • N::,7 L (ORDINARY HIGH WATER) d z LI LJ CL 700 Rip—Rop W i 0 SECTION "C-C" - . , N.T.S. . BRIDGE GRADING PLAN DETAILS FIGURE ti PACIFIC 0 i ' '`" '4` "°°`w`• "`om7 4-4 :• Durham Road Fanno Creek Crossing ,. ;c. � Cis3�F.•ri Lu'IDrroN. oe i70°�-91 J°r...�:.:. � .. . r "' ""' `y` °' '"' "°y-'"'"°"' SW Hall Blvd. — SW Upper Boones Ferry Rd. _J 1..�.+.•.Wlrv• W Mr•••■ It ' '• • . y.. • • W W 1 :'], � 1 1 f 1J I 4 1 i t 1'40)I i 1 i ,, 0 \ \ \ i ` .._ .. z \Di\ 'Q �_. 0• pi / 1 , r1,o ! ' I it • j, J 1 Vargi'.$47.,:e4.71 I R•j'71 -if7t:V.: 1 1 .1 I____ , fjosVirs,-,4„ ,_•• -w,-_—= / 't MP& . ' f l■i:, : 1 0..• , ... ,.._ , 1 ::, --s%F-A.:i:,"(41'alb, 1111111111111111111111111111d. 1/2: ID" , • -" MILO°. Ni,1 ' k' I 1 +.;‘f() -.02'4 ifi . S.W. DURHAM SAD % i .�. 1 �rj.)�K' C ti I < f a _ f ____ ._—_ — -_ caps !>•tit•>.:_ 9Rx' < =--_.,...._..._... - , ,. , ; . , _.„,..s, --,,,A,.,.,-.1.„r. . ..-_--- - .: . .. ,,::. ,. , i -_-.=... il.. • ?.?:-.,. , . J— Y -- — _. ..L /– �` _ — _ ` 7TT ,, B ) OCoast. 2:1 Slope , ! �\` B t ,. ` �` ,,,,,„. i OCons,1.5:1 Slope\ \\\� , `�``` r i�- 3 Inst. Class 700 Rip–Rop – 31 , •` 1 // y O (For Details, See Sheet 28-4) •,1\• 1 \ = r� e OM O4 Const. 5:1 Cut Slope \ ', ` ``- O S lnst. Class 700.Rip–Rap in Toe Trench 1� , \ ��` r Toe Trench Exc. – 125 C.Y. \•'::.% . / (For Details, See Sheet 28-4) J .!IBS N (ry) o Willow/Dogwood N 0 ( z • W Ash/Vine Mople/Big Leof Maple/Douglas Spired/Solmonberry . D _ a , • - ' NOTE: See SpeciIcotions for Plonting Pattern and Spacing • - 0 Lj '• — BRIDGE GRADING AND PLANTING PLAN FIGURE N PAC IrI C ✓ 1'i",Y n.N.S NI I, h..nvs r t�•.. .r4 Buvi}TON• OR .,oee-,:�o - /Durham Rood Fanno Creek Crossing 2 P1,•.•• Li . ..•: (scaI czc-ucs ri_c i.oe1 f.,_ . SV! Hall Blvd. — SW Upper Boones Ferry Rd. • ,•. 3, • ( . .. r • --••. - • •• ' ii ' :7- ("1 .=-4 d ,� 1191141/ C� J rr. ' • 1..1LJELI --"'"2,..4 n f/if .....mums ,.._...... LIU :...�:�, , ,71" - _ ct 1��r� F II i J ;�- „:„...i...,.......: l' �• f� ,•�, ;moo "� �' '� `�. : L1 ` Fi- ��-�... 1...., ' j. . , z' I iL----,--,-,,---f). D Y - ' •• ill'_._ ,Ut 1 = e ( F-- d I_.- I - ..._ 2 i • _..-------------1 sr. - -,r:15-1_1- _.f:L2 j 1 ., - •>. V II • - it i1 s '' TO NEWBERG _,� `���_ • .:., PROJECT =r ,a►�, , A`� SITE g lie . • TO SALEM .• • • el i - o . N o . • 1 • O .. z _ F U . W o •Q a. • ' i • _ . - - - u . ' W �"'., , PROJECT LOCATION MAP FIGURE A PACIFLC . • •• O „�.x: `.-.1.t:, 1406 S.W.NL°1...■ •,, 1 kGSYDrtON,00 117066-7310 -- Durham Road — Fanno Creek Crossing ''"" ""'"` °"' "°''" "" SW Hall Blvd. — SW Upper Boones Ferry Rd. J i....-.�..Y°i..ii:..`.. •2:1..........':"..7.71......_ I_ i • . • ( .. ?.'1� Permit No: 071.OYA-2-007 1 4 :> r zj. �r_r,.•Effective Date: June ], 1992 . k°— ate' June 1, 1997 _..:. Expiration Date. - - • . . ' DEPARTMENT OF THE ARMY REGIONAL PERMIT DISCHARGE OF DREDGED OR FILL MATERIAL This Regional Permit to authorize the placement of dredged or fill material in or having an effect on navigable waters of the United States pursuant to Section 10 of the Rivers and Harbors Act of March 3, 1899 (33 U.S.C. 403) and to authorize the discharge dredged or fill material into waters . • of the United States as allowed by Section 404 of the Clean Water Act (33 U.S.C. 1344) is now issued by • District Engineer U.S. Army Engineer District, Portland • Corps of Engineers • P.O. Box 2946 Y' Portland, Oregon 97208 • ;. This Regional Permit will allow the Oregon Department of Transportation (ODOT). ODOT), to discharge dredged material or place fill material as defined by Special Condition a. in waters defined by Special Condition b. providing the following conditions are met: Operating Procedure • •-•• ODOT will send a standard joint permit application for all individual activities which may qualify for authorization under this Regional Permit for review at least thirty days before work will begin. • • Each notification will contain at a minimum, but.not be limited to: (1) a description of the work to be performed, (2) total acres of wetlands or shallow water habitat to be impacted, (3) the volume fill material to be placed in accordance with special condition (a), (4) 81/2 x 11 inch drawing(s) adequately delineating the fill, (5) a description of any environmental impacts that will. occur due to the proposed fill, and (6) a description of any proposed mitigation. Copies of these applications shall be sent to: (1) U.S. Army Engineer District, Portland (Corps); (2) U.S. Fish and Wildlife Service; (3) U.S. Environmental Protection Agency; (4) U.S. National Marine Fisheries Service; (5) U.S. Coast Guard; and (6) Oregon Division of State Lands; (7) Oregon Department of Environmental Quality; and (8) Oregon Department of Land Conservation and Development. ODOT shall also send notifications of individual activities to the State Historic Preservation Officer, the Oregon Department of Fish and Wildlife, and the appropriate local ri= ''1 y 4.:. .. •. .._ iYR'-++�4.��w'sr�'s+...}�..f.rp ' ........ .. .... - .. .. .. .<•.., - - r agencies. - The Corps will review each application of an individual activity proposed under this Regional Permit to insure the proposal conforms to the requirements of guidelines developed by the U. S. Environmental Protection Agency following Section 404(b)(1) of the Clean Water Act. If an activity does not comply with the 404(b)(]) guidelines, it will be denied. An activity will be - am:. withdrawn from the regional permit process when a Federal agency writes directly to the Corps -:"It, during the 30-day review period and expresses a concern %vithin its area of expertise that the activity may cause more than minimal environmental impacts or may contribute more than minimal cumulative impacts. The written comment from the concerned agency shall specify the resources that would be impacted by the activity, describe the impacts that will be more than minimal and state the reasons that the impacts are not acceptable. The Oregon Department of Environmental Quality will determine if the proposed activity complies with the appropriate water quality standards. Likewise, the Oregon Department of Land Conservation and Development will _ determine if the activity is consistent with the Oregon Coastal Zone Management Program. If - - non-compliance is determined, these agencies will provide a written response within the 30-day review period and the proposed activity will be withdrawn from the regional permit process. If a written response is not received within the review period, it will be assumed the proposed activity complies. When an activity is withdrawn from the regional permit process, the Corps will notify the applicant and the State in•writing with copies going to the reviewing agencies. Activities withdrawn from the regional permit will be processed as individual permit applications as required by 33 CFR 325, and normal referral will apply as established in Memoranda of Agreement between the Corps and other Federal agencies. When all requirements under_the Regional Permit have been met and the required 30-day agency - period has closed, the Corps will issue a letter notifying ODOT that the permitting process has been successfully completed and that the proposed activity may be undertaken. The permitted action shall be authorized for a three year period from the date of the notification letter. 1. General Conditions: • a. All activities identified and authorized by this regional permit must meet the requirements of all general and special conditions as written. Any activity not specifically identified or authorized by this regional permit shall constitute a violation of its established terms and conditions and may result in the modification, suspension or revocation of the permit, in whole or in part, as described in General Conditions i. and j. In the event of a violation of the terms and conditions of this permit, the United States Government may institute any legal proceedings considered appropriate, whether or not this permit has been previously modified, suspended or revoked in whole or in part. b. If, during the construction or operation of any activity authorized by this regional permit, any discharge of pollutants into waters of the United States or ocean waters occurs, this discharge will at all times be consistent with applicable water quality standards, effluent limitations and standards of performance, prohibitions, pretreatment standards and management practices established through the Clean Water Act (33 CFR U.S.C. 1344) or applicable State or local law. ODOT agrees to carryout the construction or work authorized.in this regional permit in such a way that any degradation of water quality will be minimized. • • c. When activities authorized by this regional permit involve a discharge during construction or operation of any pollutant (including dredged or fill material) into waters of the United States and applicable water quality standards are revised or modified during the term of this permit, the authorized activity may be modified, if necessary, to conform to the new water '- 17 quality standards. The modification of this permit may be required to conform with the applicable revised water quality standards within six months of the %vater quality standard modification, as directed by an implementation plan contained in the modified water quality standards or within a — ; '?`i- - longer period of time as the District Engineer, in consultation with the Regional Administrator of the Environmental Protection Agency, may determine reasonable under the circumstances. rf d. The discharge as allowed under this regional permit will not adversely effect a .x" \_—_ threatened or endangered species as identified under the Endangered Species Act, or endanger _•:•,,y,_-;•.1; the critical habitat of such species. . e. ODOT agrees to make every reasonable effort to carry out the construction and operation of the work authorized by this regional permit in such a way that any impacts to fish, wildlife and natural environmental values will be minimized. f. ODOT shall allow the District engineer or his authorized representative(s) or designee(s) to make periodic inspections at any time necessary in order to assure the work being performed under this regional permit complies with all terms and conditions of the permit. g. This permit does not convey any property rights, either real estate or material, or any ;: exclusive privileges. This permit does not authorize any injury to property or invasion of rights or any infringement of Federal, State or local laws or regulations. h. The requirement to obtain the necessary state or local approval as required by law for the activities authorized by this regional permit is not affected. • i. This permit may be modified, suspended or revoked entirely or in part following the policies and procedures of 33 CFR 325.7. j. The Government will rely upon the information and data supplied by ODOT in connection with activities authorized by this permit application. Should the information or data provided for each action under this regional permit prove materially false, incomplete or inaccurate, the regional permit may be modified, suspended, or revoked, in whole or in part. Further, the Government may institute appropriate legal proceedings. k. The modification, suspension or revocation of this permit shall not be the basis for any . claim for damages against the United States. 1. ODOT will notify the District Engineer when the project authorized by this regional permit will begin and when it will be completed. m. This permit does not authorize or approve construction or improvement of any structures that may require specific authorization or approval by the Congress or other Federal . agencies. n. If ODOT abandons the activity authorized under this regional permit, QDOT must restore the area to a condition satisfactory to the District Engineer. • q o. There shall be no unreasonable interference with navigation by the existence or use of • the activity authorized by this regional permit. • ' •• p. If a previously unidentified archaeological or other cultural resource within the area '' =- that is subject to Department of Army jurisdiction is encountered, ODOT shall immediately notify the District Engineer. ... ;:r Special Conditions rY ';..•. . a. This permit shall apply only to deposit of up to 5,000 cubic yards of dredged or fill • material for each individual project, and shall not impact more than 0.5 acres of wetland area for the purpose of new highway construction, or for the purpose of improvement of an existing State highway, road, street or bridge which would have an expected minimal adverse impact on water quality and the aquatic system, both individually and cumulatively. The volume of material authorized by this permit shall be that dredged or fill material which is deposited: (1) below the. elevation of ordinary high water and in adjacent wetlands or; (2) in tidal waters, below the - elevation of the high tide and in adjacent wetlands. b. This permit shall apply to all waters within the State of Oregon including adjacent • wetlands, as defined under the authorities of Section 10 of the River and Harbor Act of 1899 (33 U.S.C. 403) and Section .404 of the Clean Water Act (P.L. 95-217). c. This permit shall apply only to those projects that involve the discharge of dredged or -_ fill material or material which comply with the revised Oregon Department of Transportation's Action Plan dated 1989.. • d. This permit shall apply only to those discharges which are authorized pursuant to the Oregon Removal/Fill Law (ORS 196.800 to 196.990), the ODSL General Authorization for Road Construction Projects, and the Oregon Forest Practices Act (ORS 527.610 to 527.735 and Subsection (1) of ORS 527.990 and 527.992). e. For activities involving filling of wetlands, ODOT shall provide a wetland delineation approved by the Corps prior to distribution of the application to the reviewing agencies. A wetland mitigation plan shall be included in the application to provide for no net loss of functional wetland values. f. The discharge of fill material and associated construction actions shall comply with the requirements of Executive Orders 11988 (Floodplain) and 11990 (Wetlands). • g. All equipment and debris from the operation shall be removed prior to inundation by high water. • h. All construction debris shall be disposed of on land in such a manner that it cannot enter into the waterway. ; • i. This permit does not authorize interference with any existing or proposed Federal project and ODOT shall not be entitled to compensation for damage or injury to the structures or work authorized by this permit which may be caused by or result from existing or future _._ operations undertaken by the United States in the public interest. 4 • j. No attempt shall he made by ODOT to prevent the full and free use by the public of all navigable waters at or adjacent to the activity authorized by this permit. • - L ODOT, upon receipt of a notice of revocation of this permit or upon its expiration , before completion of the authorized structure or work shall, without expense to the United States k;11, and in such time and manner as the Secretary of the Army or his authorized representative may direct, restore the waterway to its former condition: If ODOT fails to comply with the direction of the Secretary of the Army or his designated representative, the Secretary or his authorized representative, the Secretary or his designee may restore the waterway to its former condition, by contract or otherwise, and recover the cost thereof from ODOT. ' 1. I. The fill created by the discharge shall be seeded, sodded, revegetated, or given some. other equivalent type of protection and properly maintained to prevent erosion and other non- , point sources of pollution both during and after project completion. m. The discharge of dredged or fill material shall not occur in water identified in the Nationwide Rivers Inventory until formal consultation has been initiated and approval has been received from the National Park Service. • n. The discharge shall not be located in the proximity of a public water supply intake. If this prohibition is not feasible, alternative solutions will be presented to the District Engineer for his approval. . o. The discharge of fill material shall not occur in areas of concentrated shellfish -. production. p. The discharge shall not occur on a property described in the latest published version of - . the National Register of Historic Places nor listed in the latest published version of the Register as being eligible for inclusion therein without first coordinating such actions through the State Historic Preservation Officer. - , . q. Customary project records or appropriate summarizations shall be. made available to the District Engineer upon request. r. When the District Engineer has been notified by the Environmental Protection Agency, U.S. Fish-and Wildlife Service, National Marine Fisheries Service, or Oregon Division of State Lands that ODOT's discharge of dredged or fill material is adversely affecting fish or wildlife resources or the harvest of fish and wildlife resources, and when the District Engineer subsequently directs remedial measures, ODOT shall comply with such directions as may be received to suspend or modify the activity to the extent required to mitigate or eliminate the adveise effect. If the proposed project appears to have reasonable alternatives with less impact on wetlands (or aquatic resources), the Corps will request that ODOT provide an alternative evaluation that would be examined for compliance with Section 40.1(b)(1) requirements. The alternative evaluation may then be used by the review agencies. s. The discharge of dredged or fill material shall not occur in areas designated as natural . management units in acknowledged comprehensive plans unless the discharge is for maintenance or protection of an existing structure or an exception under the local comprehensive plans has . been adopted by the appropriate local authority and approved by the Department of Land Conservation and Development. ' ' -, 4F . i . . x, t. Activities authorized shall be completed within three (3) years from written notification . from the District Engineer that the activity complies with the terms and conditions specified - „ : within this regional permit. Extension of time will be considered upon written request. ' `':-. % ' -.• u. If ODEQ notifies the District Engineer that there is not reasonable assurance that the • ' proposed activity would comply with all applicable state water quality standards or if ODEQ - "�`T �'.,. determines the activity would have a significant adverse effect upon any designated beneficial use :1*:ikr� i, S of waters of the state, the applicant will be advised by the Corps that an individual 404 permit will ••• ` be required. ;� ' ?,,; , _ v: If DLCD notifies the District Engineer that the proposed activity would not comply •' c+-X V`-.'? •= •`-.. with Coastal Zone Management standards, the applicant will be advised by the Corps that an individual permit will be required. ,• --_ , w. The applicant shall obtain the signature of the local planning official in block 7 of the standard joint permit application form prior to distribution of the application documents in the notification to resource agencies. • '_ ODOT hereby accepts and agrees to comply with the terms and conditions of this permit. N-_•t4 , l - CA�, e_ 2 , i9 z. • - = PERMI I 1 hE DATE / , V • • BY AUTHORITY OF THE SECRETARY OF THE ARMY: .... .z.r;,.....".-• -,.,„ 0 . Charles A. W. Hines( DATE ..•- Colonel, Corps of Engineers , Commanding . 9 , rk• C"✓.aY.sue S. , ' •7 . K ._-. • ♦,r MAC'":_-% ' - - ; •.. •`Fe r•.�'"•.yiw-. • • . . •.-..�. .:,.yywF•'t^+ 'i'•...�4►i'.wy i ry.r -}... ,�r L�st.:hY:1M - — .l'• ..l..w� July 13, 1995 Sample BURLINGTON NORTHERN RAILROAD 999 3RD AVENUE, #2000 SEATTLE, WA 98104 Re: Fanno Creek Bridge along Durham Road Washington County is representing the Oregon Department of Transportation (ODOT) along Durham Road at Fanno Creek. The county and ODOT are proposing a sensitive lands application for the replacement and construction of a new bridge at this location. Prior to applying to the City of Tigard for the necessary permits, we would like to discuss the proposal in more detail with the surrounding property owners and residents. You are invited to attend a meeting on: Monday, July, 31, 1995 Tigard High School Cafeteria 9000 SW Durham Road 7:00 pm Please notice this will be an informational meeting to discuss this proposal and to provide a final overview and update on the project schedule for construction. We look forward to more specifically discussing the proposal with you. Please call me at 693- 4461, if you have any questions. Bill Ihly Project Coordinator, Washington County B & R Investments ATTN: Valeria & James Addington ATTN: Gordon/Melissa Barrett 8465 SW Durham Rd 16255 SW Upper Boones Ferry Rd 15987 SW 81st Ct Tigard, OR 97224 Tigard, OR 97224 Tigard, OR 97223 ATTN: Judith A. Benjamin ATTN: Jack Biethan ATTN: Richard/Teresa Bowen 15695 SW 81st Ct 15525 SW 109th Ave 8175 SW Durham Rd Tigard, OR 97223 Tigard, OR 97224 Tigard, OR 97224 Burlington Northern RR ATTN: David & Daniel Case ATTN: James & Audrey Castile 999 3rd Ave #2000 4630 SW 39th 8100 SW Durham Rd Seattle, WA 98104 Portland, OR 97221 Tigard, OR 97224 ATTN: Charles & Joyce Coiling ATTN: Edward & Viola Cotter ATTN: John & Janice Duncan 8385 SW Durham Rd 8065 SW Durham Rd 16055 SW 74th Ave Tigard, OR 97224 Tigard, OR 97223 Tigard, OR 97223 ATTN: Ralph & Mary Durkee ATTN: Marion & Bettie Goble ATTN: Michael & Linda Halseth 7910 SW Durham Rd 8025 SW Durham Rd 7975 SW Durham Rd Tigard, OR 97224 Tigard, OR 97223 Tigard, OR 97224 ATTN: Harold/Mildred Hambach ATTN: Craig Hopkins ATTN: Carl Johnson 7735 SW Durham Rd 7430 SW Varns St 200 James St #407 Tigard, OR 97224 Tigard, OR 97223 Edmonds, WA 98020 PGE ATTN: Werner & Inge Knebel ATTN: Mike Livingston ATTN: Lydia Lundberg 8335 SW Durham Rd 121 SW Salmon St 10355 SW Porter Tigard, OR 97224 Portland, OR 97204 Portland, OR 97225 Mt. Hood Chemical Corp ATTN: Mark Mahon ATTN: David & Dianne Metzger 11310 SW 91st ct PO Box 275 4444 NW Yeon Ave Tigard, OR 97223 Sherwood, OR 97140 Portland, OR 97210 ATTN: Michael Newberry ATTN: William Reed ATTN: Ernest & Rose Rivas 15954 SW 81st Ct 10355 SW Porter 2118 SE Main St Tigard, OR 97223 Portland, OR 97225 Portland, OR 97213 ATTN: Deborah Sayler ATTN: Dale Shoewe ATTN: Joel Stevens 15976 SW 81st Ct 7925 SW Durham Rd 9660 SW Ventura Ct Tigard, OR 97223 Tigard, OR 97224 Tigard, OR 97223 Tigard School Dst #82 Tigard School Dst. #23J ATTN: Mary Swinek 9915 SW Frewing #23 13137 SW Pacific Hwy 13137 SW Pacific Hwy Tigard, OR 97223 Tigard, OR 97223 Tigard, OR 97223 Unified Sewerage Agency ATTN: Pat Wyden ATTN: John Benneth 155 N 1st St 8122 SW Spruce st 1550 SW 109th AVe Hillsboro, OR 97124 Tigard, OR 97223 Tigard, OR 97224 Oregon July 17, 1995 DEPARTMENT OF TRANSPORTATION Gary Alfson Region 1 City of Tigard 13125 SW Hall Blvd. Tigard, OR 97223 FILE CODE: Re: Hall Blvd. - Upper Boones Ferry Road Section Durham Road The proposed roadway improvement on Durham Road from Hall Boulevard to Upper Boones Ferry Road are being done by Washington County. By intergovernmental agreement, Washington County, or it's agents (W & H Pacific) are acting on behalf of the Oregon Department of Transportation (ODOT) in making this improvement. ODOT has been involved in coordination and review of design standards during the development and design of this project. ODOT will be the contracting agency, but Washington County or it's agents will administer the contract with review and oversight by ODOT. I understand a public information meeting will be held regarding this project on the evening of July 31, 1995. Washington County, or it's agents will represent ODOT for the purpose of these planned improvements. If questions regarding ODOT policies and standards arise which they are unable to answer, these should be followed up by the county. The county should contact myself or appropriate ODOT staff, then respond as best appropriate following the meeting. Please call me at 731-8238 if you have any questions or concerns about ODOT's representation for this work. Ted W. Keasey, P. ., P.L.S. Project Team Manager ,i 'l hc: Bill lh ly, Washington County Jim Evans, W&H Pacific 123 NW Flanders attachment Portland,OR 97209-4037 (503) 731-8200 gatk0717.doc Form 734-1850(11-94) FAX (503) 731-8259 AFFIDAVIT OF MAILING STATE OF OREGON SS CITY OF T1GAR❑ I, VEN) W i4'}'V),S , being duly sworn, depose and say that on j thJaS. JVL`r S3 2 , 19 41 S, I caused to have mailed to each of the persons on the attached list a notice of a meeting to discuss a proposed development at I7--kt C241=FIC ft"`.oiuto ��a -�V-,M 12e 4-D , a copy of which notice so mailed is attached hereto and made a part of hereof_ 1 further state that said notices were enclosed in envelopes plainly addressed to said persons and were deposited on the date indicated above in the United States Post Office at PNtei i o'J with postage prepaid thereon. �( Sign' Subscribed and sworn to before me this I-`� day of J ( , 19 95 . _)1(kAtill fl ! NNE Notary Public lt "` : YPPt UC OREGON 1 My Commission Expires: s. 4 COMMISSION NO. 036419 t MY COMMISSION EXPIRES JULY 19, 1998 h:\Icsin\jo\ai!mail.c:t 2S112CD-01000 2S112CD-00900 HAMBACK, HAROLD MILDRED RIVAS, ERNEST ROSE 7735 SW DURHAM RD 16060 SW 76TH AVE TIGARD OR 97223 TIGARD OR 97223 2S113AB-00800 2S113BA-00100 DUNCAN, JOHN A AND JOHNSON FAMILY TRUST, THE JANICE LEE BY CARL H JOHNSON TR 16055 SW 74TH AVE 200 JAMES ST #407 TIGARD OR 97223 EDMONDS WA 98020 i _ SEE MAP 0 0 0 0 '",°,t Z 119.960 '20 4C.3 2S I 12DC r N333++ r' r T� 2 7 00 TRACT wi49.,,9 J� r� T �, 0 49.7 i- 330.50 . J,. 330.50_ .� • / 9 50 50 ✓ 32.21 \ 50.08 45 50 50 50 50 50 50 50 50.99 55 55.1'. r 5100 1 5201 5300 5400 5500 5600 \ 2100 2200 2300 2400 2500 2600 2,700 2800 2900 3000 3100 3200 5 -r, g V r° m m ■ \ ,o " r' v, n ° Pe; t r n r n 2j6 ?32"M �` AO en M 1 4 r 5 6 8 9 10 - I I 12 2•p "' ° ° •• w 1 "" 2 0 3 0 „ a o o• ri r. r; ,n 7 6 2 0 ` V F g 32 0 33 34 0 35 36 r I o - r-� - I Ifff���, ° // m \�o' - r) J 16z (o \1 'J 91'85 ^. "O 33- ,200 +1 50.19 30.19 33.96 39.12 50 ,� 50 i. 50.99 55 •5.12 S•0 t 0 7300 7500 , 4,�_ '0 , IN 22 4 C. : I./8 AC. N 0 �,\ `.Jl�``, /1 or,r 49.46 50 50 50 41.,3 bS • ,6 3976 45.11 5019 n STREET r^ \? R.2528q •` \ JP 1_ N r 1.77 O o \ it ° BOND -.270 N, ` oN� _�R=252.84 2S.W. n - \ ° N - 49 49 46.95 40 45 • 40 4k \ I ✓ 9 4 1 0 0 Z r 4g 72 '30-23 SO SO 50 40.85 �JT9 \ O 45.17 45.17 45.17 50-19 0: 17.94- �7 9 5. 4 .........2) 0,5000 4900 ' 4800 4700 4600 1 P \ ��y'94400 4300 4200 4100 4000 3900 3800 3700 3600 3500 3400 3300 \ 7400 3 1\� ^ �- ^'T� N c a o, C °' °' a m a ./BAS. N / ' m `/ 8 � ° I ■ - n n m ISM 18 17 16 ° 15 14 13 \"'tv et 30 0 EiJ o o \ : " 24 "0 23 0 22 ° 21 < 20 = - - - - _ _ ° \Q' 29 -1 28 27 26 -1 25 '" ■ m = r) If( - 2 ... r ��� m \ , Q - I - \ T� 1 \ - NITIAL 2+� N88°4232"1 , POINT S`_ N89` 54' 26E / 51.01 SO SO SS SG IG 30' 20' 9013 45 45 45 50 30 49 49 48.93 40 45 SO `}C�_5 q e 305.9E • r�i lj(!!/A/� I� /.�- �J-' b/�I� / ., , ,...,.e.„___;_ ,.. ..,,��,i,,iv iiiviiusivi 7117:6;i"/"Ze/iie 1 • Ai". I! !!!!t 165.45 165.49 / 330.97 330.97 Edell T e 40'r 1200 - 1300 / � r-' 70G o r .88 AC 23A . 1000 110 to r 500 AC. I JJ z° 701 1 .6OAC. CJ e a .244c. a°I / I it n v 1100 O m a /tv / ° .54 AC. N~ I s I tytt A./ r N co N 110 + 296.20 rN 4 3 / °l / r' r� 800 r 0 r 3 U 74 AC. 2 N as 1 "' / 331.45 ° I a r N89° 56.E ''^^ if 165.98' 165.98' V0 m 208.54' a o TERM. o? °' INITIAL POIN CR.23 7q u°. 233.40 DURHAM ACRES in 3 / - (CR.23 NO WIDTH STATED y m I/4 COR ,} 4: _1 7214111 I 900 $.mom - 1�Q�_ /.03 AC. y _. �/�� SEE MAP ;'� i '� 'J ' ....! sa,° 2S I I3AB CR a la' - T q, 90 30', �+ F/ m • (04 ti0 , 40 / . O S 'o7,y lgTF ��sT4r SEE MAP qy .f, 2S 113BA .` e3BO, FOR ASSESSMENT PU?POSES 7� ONLY DO NOT RELY ON FOR 4 . aif ANY OTHER USE. 0 b T I GARD 2S I I2CD Class I Surface Finish, Typ. 4 43=0"Roadway IVidth I 1=4" 8=6" 5=0" 12=0" 14.0" 12.0" 5=0" 8=6" 1=4" • Sidewalk Bike Lane Trove/Lone Median Lone Travel Lane Bike Lone Sidewalk• _ „p, o) 2"Asphalt Concrete Pedestrian Roil On I' Wearing Surface S/ruc/are& Type F"Concrete L"Line -- Bridge Roi/ Richmond Structural Concrete 1.\ S/. 002 f1/ft S/. 002/1/f1 S/. 002 ft/ft S. 002 ft/fl inserts, Type EC-2F Or EC-2FW • . . Or Equal, For .11"Bolls V . •• 1 . ..^.- .. ., :1 e• — .1111:_____11111 --___:„.__..• 10.0"Ctrs. Fu//Length Of I /''-6"� • dy �I'6" 1-6" • :� "� � I Structure, 3 Places Each Side (v_..,,_6- k I / 0"Typ. ■ `3-/1" '3-//" (E •"Drip Groove,4:_____ Inserts, - T Both Sides Concrete Diaphragms Provide B/ockou/s /n Diaphragm yp' Typ. Both �B Points See Waterproofing For Uti/i/ies Determine Size And Sides Sht.. 6 For Details Membrane Location /n Fie/d, Typ. Both Sides 6.5" 7 Beom Spaces e 7=10"= 54=10"(8 - 54"Deck Bulb Tee Beams) 6-5" 67-8"Out-Out Structure I 'NOTE .3=11-Dim Shown Is Nominal. Dimension TYPICAL DECK SECTION Will Vary Due To Cross Slope. 1/4.=V-0. 9=10" 6i" 1.4" 8=6" ADVANCE PLANS NOT FOR CONSTRUCTION ° 4" OBEC CONSULTING ENGINEERS C 8" h '� 7 •jOQi:- ;' 44-" 9-5" DATE _ /4 0 7/- 8-14, Con/. N (Epoxy Cooled) . • /4 0 9" ii S/. 002 ft/!f In SI. 0.02 ft/fl E rt Bent 1 Bent 2 .I ` CO Field I 5-14, Cont. Q Bend . _ _ - = /4�Z�'4 0 /8" /4 0 18=� — _ °--______ N (Epoxy Coated) 9=6" 00 I f Top Of Beam 6" [�• AC Build-up Thkn. Varies SIDEWALK DETAILS ACWS BUILD UP DETAIL 1/2'=I'-{f NO SCALE g h ti S OBEC Consulting Engineers 244 Y a_u3 ROAD Fa45 i/SSL.i76 9 9 ELICDE,CIEGON 97401 Td(50.3)661aOS0 N DATE REVISION BY D.Axle// DESIGNER BRIDGE N0. SHEET c rnnrnn hem - ?r, 4 -- —• __ 4 \ 17970 .1�/ ' OREGON DEPARTMENT OF TRANSPORTATION DATE FANNO CREEK BRIDGE eF 0E0�T1 . ., �c�o,,-'"p:�� RRIDG� �NGIN��RING SECTION SUPERSTRUCTURE DETAILS DRAWING NO. o CAIC. BOOK (IMES _12:31-06_ File Nn . i HYDRAULIC DATA Bonita ; Rd I° •• 20'4" 100=0"C/r-C/r. Bens DESIGN _BASE ROADWAY v FLOOD FLOOD OVERTOPPING . V EndPo7e/f I Oisctwrge-cts 4200 4200 0 I �(te� en 15=0", Frequency-Years 100 100 - a �' Q�' et TIP• H.W.Devotion Ft. 128.3 —128J Z try �` Ra 0 o Nat.C xry d ` e N Class 700 Riprop Std. 20"--4"Bridge �,� ti m• Durham Rd. r End Panel, Ea. End O •• sr �{ sr sr— �� See Owg. No. 43422 �00 O i� (�� �• ' Ml/ PROJECT o�e5 • v 0o Rd. . t o `/ e S,ed SAM /„......._,_= __, _____.„_ _ /0'Cos 10'Cos t: 0-Co' - - - - - /o'Cm_ I `��': N I 'O" co 9'01:51" ��Ia• ,S iY ON/1?HAM ROAD 0, 2"L ine _ N 57 58 31_W 4_J _ 4l tea, N570002"W - , 1 300' V.C. _ T�o `� i 'E/. 13960 J F- ' 'El. 138.05 -Z.517� 1.015 '� o rig r "'� �r� r r �� I r --_�P v �- �. Proposed SEC.12, T.2S., R.1 W., W.M. '? 1I 'I� , Structure y �� .o.� `�� o.i `/'�' LOCATION MAP NO SCALE �..��0 . Exl9 Bridge r ,,� �� °o GRADELINE DIAGRAM o + 'Elevations Shown Are Finish `D SCALE Grade Top Of ACWS. c ti ADVANCE PLANS GENERAL NOTES.' PLAN NOT FOR CONSTRUCTION A//material and workmanship shot/conform /o the Standard Specifications for Highway Construction, 08 EC CONSULTING ENGINEERS 1991 Edition, of the Oregon Deportment of Transportation and the special provisions. • I'=20• Bridge designed for HS25 loading with on allowance for present wearing surface and 25 ps(for future DATE wearing surface in accordance with the current Standard Specifications for Highway Bridges"of the 000=0"C/r-C/r Bents American Association of State Highway and Transportation Officials(AASHTO) • N. o Concrete members designed by Load Factor Design Me/hod Seismic design is in accordance h Pedestrian Rai/ On Type F" ti with AASHTO Division 1-A Seismic Design criteria for seismic performance category A, A=0.29 `!N' Concrete Bridge Roil. See -150 2 tl'm Dwg No. 47168 m All reinforcing steel except prestressing strand shot!conform to the requirements of ASTM A615 —1/ `�c' _ _-,__■_. i.,'-)ti Grade 60, or A706 The following splice lengths shot/be used enless shown otherwise' -140 \_ ���_ ��I■ ni= O ---_—_ Bar Size 3 4 5 6 7 8 9 10 II 130 U! A -- -� �- �£nd Pone/ Sp/ice Length(Uncoated) 1=0" 1=4" 1=8" 2=0" 2=9" 3=7" 4=7" 5=9" 7=1" • -120 Splice Length(Cooled) 1=5" 1=11" 2'4"7-10'_...3=10 5.-0" 6.-5"_ 8=1"_9=11" 100" Yr. Flood • o-110 Min. Tip E/. 75.00 Eel y Ground El. /28.3 Min Tip E/. 75.00 Epoxy splice length e [ I Es/. Tip El. 5800 Est. Tip E/. 5800 100 All bars shot/be placed 2"clear of the nearest fore of concrete unless noted or shown otherwise. v ("-9O Concrete in precast prestressed beams shot/be Class 7000 - i. The minirrx n concrete strength at ELEVATION transfer of prestress shall be 6400 psi. All other concrete shall be Class 3300- 11 or i. -80 1-=20' Prestressing strand shall be as ca/led for on the detail drawings. • o All piling shot/be PP 1275 x 025 steel pipe conforming to ASTM specification A252 Grade 2 (Fy=J5 ksi) oPiling shall be driven close-ended to on ultimate bearing capacity of 360 kips per pile. Pile 0 m driving criteria will be determined by Gales Equation Analysis with an applied safety(actor of.3.0. ti 0 OBEC Consulting Engineers CO°°"4TRY "°"O `°�'° ® _ 9 9 �OFEDDN 9740! Ta(scupaYeoao DATE REVISION BY DESIGNER SHEET O plum M K Sweeney BRIDGE NO.OREGON DEPARTMENT OF TRANSPORTATION 17970 FANNO CREEK (DURHAM ROAD) BRIDGE ' - OF- c Aus/md BRIDGE ENGINEERING SECTION DATE HALL BOULEVARD-UPPER BOOP�ES FERRY ROAD SECTION 8 _ In a(Mit I WASHINGTON COUNTY DRAWING NO. eromeO.Lme o p��� +H,ner acs 43422, 43495L 47168 CALL. 803K PLAN & ELEVATION . CF51(NI) KOWA.l.Ww,r AC..S.A.°. PRO,CCI NJ.( R 0 Exuma _12:3.1:96_ REGION 10 I a+EGGN DIVISION - , Sec. 13, T. 2S., R. 1 "' W.M. • I I I 1 , j f I U i i 1 I / • I i ` / i 0 i i i - - I'`✓ I • I ' ) t i / 1 N i % ,` F . __in i r j Perynon I Slope Easement J / ••, _.%/ 1 �' ! y—j I/i /"~ /`/ V. _....fir 9 ' 1�, T .Cmst asemenf ®� �/ % ,� /,.•� /•, 1\a'• Pamonen Oronoge% .....%' —7.,'-- sl.' � •__ Pemmmr a-�:roye_mcmM w_ d, ; 11^ R W l�r �p�g�y�,(r a•�= -:1i `"� -•WA r,14,41,'\,..1 /------ - 1111 - 04 _ _ ._ ...-,,...„,,,..: . _._ _ _.- .... __. ,. „ • ,.2• a \ i !{/: ' ' -', I -,..-?.., i ',,..,..,-N.„-...',-,"--:,,,;c:.4, ifirfAll . I _,i(1) *ONE 1'.4,1-.'t*. i g___ _l_____ tb _._ — Ay.was ' a—�tiSI �Rtit !. 't, — y_ — - 1 1 i 1'' / / / '' i ._ , i;.. , I 'iii • \ fax-mail 1——� — — �Peemmenr Slope Ed .mil �'• ..1 \ I ii i,• \ \ I 11 op %' ` \ \ ` \ \ ! • \ } •. '\ \ ,--_.\ � , - I \ \ , Zi I / \ Z O I � / \ , 0.\\:-.3„. \ o \cA\ \ • / i t // (FE17) \y:)\ \ \ ' / ,t l J O Sta. 123+2.3 Rt. 26.5' Const. Type "4A" Inlet 12 Reconst. Manhole (By Others) 23 Sta. 124+75 Lt. 44.0' Inst. 12' Sew. Pipe — 55' Const. Manhole Inst. 15" Sew. Pipe — 330' 13 Reconst. Manhole Inst. 15" Sew Pipe — 61' (For Details, See Sheet 2B-3) Q'''' O Sta. 124+70 Lt. 26.5' 14 Const. Single Spon Conc. Bridge r Const. Type "4A" Inlet w/ Orifice Plate For Bride Plans, See Sheets 13-13G 24 Const. Storm Sewer Outfoll r ( 4 ) (For Details, See Sheet 2B-4) o Inst. 15 Sew. Pipe — 55' o (For Details, See Sheet 2B-4) 16 Relocate Utility Pole — 7 (By Others) 25 Const. 5' Conc. Sidewalk Toper , From End of Bridge Panel z o 44 Sta. 124+70 Rt. 26.5' 19 Const. Compost Storm Filter As Shown — 4 Const. Type "4A" Inlet (For Details, See Sheet 2E) W Inst. 15 Sew. Pipe — 147' Inst. 6" Sew. Pipe — 11' 26 For Grading Under Bridge, 0 20 Inst. Utility Pole — 6 (By Others) See Sheet 28-6 a O Sta. 126+87 Lt. & Rt. 26.5' 27 Sta. 124+80 Lt. 35.0' Const. Type "Mod. 4A" Inlet — 2 6' Sedimentation Manhole Inst. 12 Sew. Pipe — 72' 22 inst. 6" Thick Conc. Sidewalk with 6" X6" IOGo Mesh Inst. 10" Sew Pipe — 19' 11 Remove Extg. Wood Shock Sta. 124+17 to Sta. 125+07 (For Details, See Sheet 26-3) 1, gA V PACIFIC ROADWAY PLAN FIGURE G : S403 S.W.Nimbus s■evue awuiON,OS a,00a-7,Yo Durham Road — Fanno Creek Crossing 4 pavvc t3D](eYa-D{33 7.x:=1.626-0.,6 SW Hall Blvd. — SW Upper Boones Ferry Rd. • l- 1 e se- sv{t""rrey (