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HomeMy WebLinkAboutAgenda Packet - 2000-02-23 PM PLANNING DEPARTMENT FILE DEVELOPMENT REVIEW COMMISSION AGENDA PACKET FEBRUARY 23 , 2000 ``tiOS LAKE ps` CO City of Lake Oswego 47 I 4 Development Review Commission ��' Wednesday, February 23,2000 7 p.m. OREGO$ City Hall Council Chambers 380 A Avenue Members: Lake Oswego, OR 97034 Julie Morales,Chair Nan Binkley,Vice Chair For Information: 635-0290 Doug Cushing Douglas Kiersey Agenda Sheila Ostly Bruce Miller This meeting is in a handicapped accessible location. For any special accommodations, please contact Janice Bader at 635-0297, 48 hours before the meeting. I. CALL TO ORDER Agenda Book * II. ROLL CALL III. APPROVAL OF MINUTES January 19,2000 11111 IV. APPROVAL OF FINDINGS, CONCLUSIONS AND ORDER V. PUBLIC HEARING LU 00-0002,a request by Mr.Donald F. Cameron,(neighbor to the north)for a hearing regarding the applicant's request to remove eleven(11)trees in order to construct a new single family dwelling at 2306 Mayors Lane(Tax lot 401 of Tax Map 21E 16CB). The staff coordinator is Michael R. Wheeler, Associate Planner. Continued from 2/7/2000 DRC meeting. AP 99-13,the applicant,WRG Designs,Inc., is appealing the Planning Director's decision approving a minor partition request to divide a 1.28 acre lot into three parcels, including two flag lots. [LU 99-0029] The property is located at 1501 Country Club Rd., Tax lot 2900 of Tax Map 21E 4DB. The staff coordinator is Morgan Tracy,Associate Planner. Continued from the 1/19/2000 and 2/7/2000 DRC meetings. LU 99-0069, the applicant, Oregon Department of Transportation is requesting approval to reconstruct the Childs Road Bridge between Bryant Road and Sycamore Avenue. This site is located in the Public right-of-way(Tax Map 21E 20). The staff coordinator is Morgan Tracy, Associate Planner. VI, GENERAL PLANNING & OTHER BUSINESS VII. ADJOURNMENT S STAFF REPORT CITY OF LAKE OSWEGO • PLANNING DIVISION APPLICANT: FILE NO: Oregon Department of Transportation LU 99-0069 PROPERTY OWNERS: STAFF: City of Lake Oswego Morgan Tracy Lake Oswego Corporation Clackamas County DATE OF REPORT: LEGAL DESCRIPTION: February 10, 2000 Tax Lot 200 of Map 21E 20 (Canal) DATE OF HEARING: Tax Lot 145 of Map 21E 20BC (River Run Park) & County Road No. 848 Right of Way February 23, 2000 • LOCATION: NEIGHBORHOOD ASSOCIATION: Child's Road Bridge Blue Heron Neighborhood Association River Run Park Childs Neighborhood Association COMP. PLAN DESCRIPTION: ZONING DESIGNATION: R-10 R-10 PK/OS I. APPLICANT'S REOUEST The applicant is requesting approval of a Conditional Use and Developmetn Review Permits in order to replace a 20-foot wide substandard bridge with a 39 foot wide bridge. The new bridge will provide two 10 foot wide lanes, a five foot wide bike path on each shoulder, as well as five foot wide sidewalks on each side. The proposed bridge width expansion and necessary grading will impact Sensitive Lands Overlay Districts (W-11/RP I Stream Corridor, RC Tree Grove). Mitigation is being proposed along the Tualatin River within River Run Park. • LU 99-0069 Page 1 of 19 . II. APPLICABLE REGULATIONS A. City of Lake Oswego Comprehensive Plan: Goal 1 Citizen Involvement II/ Goal 2 Land Use Planning Goal 5 Open Spaces, Scenic and Historic Areas &Natural Resourc Goal 6 Air, Water, and Land Resources Quality Goal 7 Natural Disasters and Hazards Goal 8 Parks and Recreation Goal 11 Public Facilities and Services Goal 12 Transportation B. City of Lake Oswego Zoning Ordinance (LOC Chapter 48): LOC 48.02.015 Definitions LOC 48.06.195 —48.06.225 R-10 Zone Descriptions LOC 48.17.015 —48.17.610 Sensitive Lands Districts LOC 48.20.530 Vision Clearance LOC 48.22.550—48.22.585 Conditional Uses/Major Public Facilities LOC 48.26.700—48.26.735 Non-Conforming Use/Structure C. City of Lake Oswego Development Code(LOC Chapter 49): LOC 49.16.015 Definitions LOC 49.16.020 -49.16.030 Application of Code, Planning Director Authority, Fees LOC 49.16.035 Development Permit Required LOC 49.16.040 Development Permits Restricted LOC 49.20.115 (2)(e), (2)(i) Major Development LOC 49.22.200 Burden of Proof LOC 49.22.205 Development Standards LOC 49.22.220 Review Criteria for Major Developments LOC 49.22.225 Conditions of Approval LOC 49.30.500-49.30.510 Application Requirements LOC 49.36.700 -49.36.720 Application Procedures LOC 49.44.900 -49.49.4492 Review of Major Development Applications LOC 49.40.1000 -49.40.1035 Hearings Before Hearings Body LOC 49.56.1310 Effect of Denial and Resubmittal LOC 49.58.1400—49.58.1430 Effect of Compliance with Approved Permits D. City of Lake Oswego Development Standards: 2.005 —2.040 Building Design 5.005 —5.040 Street Lights 8.005 — 8.040 Park and Open Space 9.005 —9.040 Landscaping, Screening, and Buffering 11.005— 11.040 Drainage for Major Development • 13.005 — 13.040 Weak Foundation Soils 14.005 — 14.040 Utilities LU 99-0069 Page 2 of 19 16.005 — 16.040 Hillside Protection 17.005 -- 17.040 Flood Plain 18.005 — 18.040 Access 19.005 — 19.040 On Site Circulation -Driveways and Fire Access Roads • 20.005—20,040 On Site Circulation- Bikeways, Walkways, Accessways E. Streets and Sidewalks(LOC Chanter 42): LOC 42.02.010—42.18.1055 Design Standards, Public Rights of Way F. Trees (LOC Chapter 55): LOC 55.02.035 Removals in Conjunction with Major Development LOC 55.02.080 Criteria for Issuance of Type II Permits H. Prior Approvals: SD 29-78 (River Run Subdivision) III. FINDINGS A. Backeround/Existine Conditions: 1. The existing Childs Road Bridge on the Oswego Lake Canal was constructed in 1925 with the use of salvaged steel beams from a railroad roundhouse. These • beams are dated 1882. 2. The bridge is substandard in several respects. It lacks adequate width to provide for bicycle facilities and has no sidewalks for safe passage of pedestrians across the canal. With the bridge located between major residential development(River Runs I and II, and Renaissance Park)and significant wildlife open space areas (Bryant Woods and Canal Acres), provision of safe pedestrian and bicycle facilities is critical. Moreover, due to the age and construction of the bridge, it cannot support the weight of large emergency vehicles exceeding a 9 ton weight limit. This project is identified in the City's Public Facilities Plan (a component of the Comprehensive Plan, adopted September 2, 1997) as "T-56" in the short- term(0-5 Year)projects list. 3. Current traffic on this section of road is 3,500 average daily trips, forecasted to increase to 6,000 average daily trips by 2020. Childs Road is designated as a major collector by the City's Comprehensive Plan. 4. The proposed bridge will be aligning the offset curve in Childs Road and widening the pavement to taper into the existing road surface on either side of the bridge. The total length of the project area is 275 feet. The new bridge will measure 39 feet wide by 63 feet long (Exhibit 8). 11/ 5. In addition to the Canal (identified as W-11, Exhibit 2), there are wetlands on the west side, and an RC tree grove on the east side. A biology report (Exhibit 21) LU 99-0069 Page 3 of 19 notes that salmonids may also be present in the Canal, requiring that any work be done in accordance with Endangered Species Act requirements and Natural Marine Fisheries Service oversight. 6. The area proposed for mitigation replanting (for disturbance to the tree grove and• canal) is within the River Run I open space, dedicated as a public park. SD 29-78 (Exhibits 22 and 23) contains no specific conditions which would prevent this mitigation replanting from occurring within this open space. 7. The project site and mitigation replanting areas are within the R-10 zoning district. The site is directly located above the Oswego Lake Canal. To the northeast lies a city-owned open space area (the former Eaton property), to the northwest is Bryant Woods Nature Area, southwest is the Canal Acres Natural Area, and to the southeast is an extension of River Run Park (Exhibit 1 and 2). 8. This is a Clackamas County Project within the jurisdiction of the City of Lake Oswego. The County has requested that the structure be replaced under the funding of the Highway Bridge Replacement and Rehabilitation Program, administered by the Oregon Department of Transportation(ODOT). B. Compliance with Criteria for Approval: As per LOC 49.22.200, the applicant for a development permit shall bear the burden of proof that the application complies with all applicable review criteria or can be made to comply with applicable criteria by imposition of conditions of approval. The applicant has submitted the information required by LOC 49.30.500 - 49.30.510 and LOC • 49.36.700 - 49.36.710. LOC 49.20.115 - Maior Development Since this application seeks conditional-use approval and is proposing a major transportation facility within RP and RC Districts,the subject proposal is appropriately being processed as major development. The applicant has submitted a complete application as illustrated in the exhibit section of this submittal. On October 14, 1999, the applicant held a neighborhood meeting inviting the Blue Heron and Childs Neighborhood Association, as well as property owners and residents within 300 feet of the project boundary. This was actually the second such meeting, the first being held several years ago. The City determined that a second meeting was needed due to the duration of time that had lapsed since the first meeting and because of the changes that had occurred in the bridge design, Exhibit 9. As per LOC 49.22.220, for any major development application to be approved, it shall first be established that the proposal complies with: 1. The applicable policies of the Comprehensive Plan; The applicable policies of the comprehensive plan are: • LU 99-0069 Page 4 of 19 Goal 1 — Citizen Involvement The overall objective of this goal is to provide opportunities for citizens to be involved in the planning process. Policy 2 requires that citizen involvement opportunities be • provided that are appropriate to the scale of a given planning effort. The proposed application is a major development that is subject to neighborhood contact requirements and a public hearing. As shown in Exhibit 16, the applicant notified neighbors and property owners within 300 feet of the project, and contacted the Blue Heron, Childs, and Rosewood Neighborhood Associations, as well as the City of Rivergrove for the neighborhood meeting. In addition, the City sent notice as required by LOC 48.24.665. The proposal is in compliance with citizen involvement policies. Goal 2— Land Use Planning The overall objective of this goal is to ensure that all development conforms to Comprehensive Plan policies and applicable land use regulations. These policies require adequate public services be provided, park and resource areas to be preserved, and negative impacts to be mitigated. The proposed use is replacing an existing bridge structure. While there will be some limited temporary disturbance within the canal and abutting tree grove, this disturbance has been minimized by not providing a detour bridge, and limiting areas of excavation. Impacts will be mitigated by replanting the disturbed areas and enhancing plantings along the Tualatin River. Land use policies are implemented by the development standards, as discussed later in this report. Compliance with the development standards will assure compliance with the Comprehensive Plan policies. Goal 5— Open Spaces, Scenic and Historic Areas & Natural Resources The objective of this goal is to conserve open space and protect natural and scenic resources. Goal 5 requires communities to inventory resources and manage these areas to preserve their character. The Sensitive Lands inventory accomplished this task by designating areas of stream corridors, wetlands and tree groves. The project site lies at a convergence of several of these sensitive resources. The canal, a stream corridor, has associated tree groves on either side. Additionally, a designated wetland is present to the west in Canal Acres Natural Area(Exhibit 2). The policies of this goal ensure that development that occurs in these sensitive areas will not be injurious. The Comprehensive Plan requires that techniques that avoid and minimize disturbance be explored. The applicant,with input from the neighborhood, has reduced the width of the proposed bridge design (Exhibit 9). The previous proposal was 48 feet wide, while the present proposal has utilized the minimum lane widths and reduced the total width to 39 feet. Options were explored to separate the pedestrian bridge from the vehicle and bike traffic, but it was determined that this approach would disturb a longer section of the canal banks and affect a greater area of native plants. The applicant is also proposing to close the road in this section and detour traffic (Exhibit 13) during the bridge construction rather than constructing a temporary bridge next to the project site. This eliminates the need for grading and paving an adjacent roadway,resulting in tremendous disturbance to • the tree grove and park uses. Where avoidance is impossible, mitigation is necessary. The applicant has proposed stream bank replanting within the canal and project impact LU 99-0069 Page 5 of 19 areas (Exhibit 11)as well as additional restoration work to occur in River Run Park (Exhibit 12). Due to the presence of possible Salmonids in the Canal, the project had to be modified to satisfy National Marine Fisheries Service (NMFS) requirements. Speficially, NMFS • wanted to ensure the design was "fish-friendly" by restricting rip rap from the stream channel bottom. This will be accomplished through the use of sheet piling driven at the edge of the stream bank(Exhibit 8). Goal 6— Air,Water, and Land Resources Quality The objective of this goal is to maintain and improve the quality of the air, water and land resources. This is done by maintaining open space areas and functions,providing an adequate transportation system that promotes alternate modes of transit and reduces congestion, and treating point sources of pollution. This project will provide for pedestrian and bicycle routes across the canal, and does not encourage additional vehicular traffic by adding unnecessary additional lanes. Storm runoff will be collected in a pollution control manhole before discharging into the canal (Exhibit 10). Goal 7— Natural Disasters and Hazards Goal 7 seeks to protect life and property from natural disasters and hazards. The development standards and restrictions related to areas prone to natural hazards implement the policies of this goal. In this case, there are two such areas: the regulated flood plain and weak foundation soils as shown in Exhibits 3 and 4. These policies are implemented primarily through the Flood Plain, Weak Foundation Soils, and Hillside • Protection Development Standards. The applicant has addressed these standards in the narrative (Exhibit 14), geology report(Exhibit 19 and 20) and hydraulic report (Exhibit 17) as discussed in more detail, later in this report. Goal 8— Parks and Recreation This goal seeks to encourage diverse use of the City's park system while protecting natural resources in those area. This proposed bridge replacement project will impact a small area of City owned open space to the northeast of the bridge which is necessary for grading. Due to some necessary grading, the project will also provide resource enhancement planting in River Run Park to the south(Exhibit 12). The bridge will, however, further the purpose of this goal by providing a critical connection in a system of pathways to connect open space and park facilities with neighborhoods. Short term accessibility to Bryant Woods Natural area and Tualatin River Bank may be limited during the construction and landscaping phases, however, the long term accessibility to these areas will be enhanced. The resource enhancement project is not a park development that will affect the intensity or level of use of the area. Goal 11 — Public Facilities and Services This goal seeks to ensure that development is adequately served by an urban level of • service, including public safety services, storm water management, water treatment, and sewer service. This project will help the City enhance response times since the current LU 99-0069 Page 6 of 19 1 bridge is unable to bear the weight of heavy emergency services. As such, fire trucks must utilize alternate routes to respond to emergencies. The new bridge will resolve this deficiency. • Goal 12 -Transportation Policies The overall objective of this goal is to provide a safe, convenient and economic transportation system. Childs Road is designated as a Major Collector. The comprehensive plan requires that the major streets system operate at or better than a Level of Service"E". This project will have not decrease the level of service since no traffic control points are being added, and no additional lanes are provided. There are no proposed changes to access points,driveways, or road classifications as part of this project. The provision of bicycle and pedestrian routes should improve the level of service over the long term and will also help implement other policies of this goal. Policy 9(b) of Goal 12.4 requires that all development projects provide for alternative modes of transportation, such as public transit, bicycling and walking. Transportation policies are implemented by the development standards, as discussed later in this report. Compliance with the development standards will assure compliance with the Comprehensive Plan policies. 2. The requirements of the zone in which it is located; R-10 Zone Description FLOC 48.06.195- 48.06.2251, The proposed bridge replacement is partially located within Canal Acres Natural Area • and City owned open space, which have an R-10 residential zoning designation. The replacement will also include disturbance within the privately owned Oswego Canal. The Lake Corporation(owner of the canal)has signed their agreement to allow a temporary easement to reconstruct the bridge. LOC 48.06.195 and 48.08.245 allow"major public facilities" as conditional uses in the R-10 zone. The conditional use provisions will be addressed later in this report. As a transportation facility, there are no applicable underlying zoning setbacks, lot coverage or height requirements. Sensitive Lands Overlay District ILOC 48.17.005— 48.17.6101 The purpose of this district is to protect the functions and values of wetlands, stream corridors, and tree groves on lands with environmental or natural significance. Exhibit 2, from the City's Natural Resources Inventory maps, illustrates the location of Oswego Canal (RP-I)which runs beneath the proposed bridge. A wetland (RP-I) is also present on the south west corner but outside of the project impact area. Exhibit 2 also illustrates that a significant tree grove (RC)is located within the project impact area boundaries (Exhibit 7). The presence of both RC and RP designations require the application be reviewed pursuant to LOC 48.17.200 to 48.17.210 and LOC 48.17.300 to 48.17.310. The tree grove within the property to the northeast is classified as a Resource Conservation (RC) district. LOC 48.17.200 requires that applicants for development permits within an RC district designate a"protection area." The protection area must comprise at least 50%of the canopy area of the RC district within the development site. The applicant has not specified the location of the protection area. However, there is no LU 99-0069 Page 7 of 19 • future development anticipated within this open space area. The City purchased this property specifically for the purpose of setting it aside as open space, not to be developed. The applicant has proposed that in order to construct the bridge and perform the necessary grading to provide for a sidewalk, one 11" diameter maple will need to be removed from the RC area(Exhibit 11). This area will be replanted with a mix of bigleaf• maple, red alder, and Douglas firs with the intention that the area will return to a native tree grove condition (Exhibit 11). There will be some disturbance to understory vegetation accounting for less than 1% of the RC district area. The remainder of the open space area will be left untouched by this proposal although several other trees will be removed outside the RC district. Staff finds that a survey of the tree canopy and designation of a specific protection area is not necessary in this instance as greater than 99% of the District will remain unimpacted. Future projects within the open space area will require either a specific designation of at least 50%protected area or a modification of this approval. In addition to other City development and construction standards, LOC 48.17.210 sets forth the development standards for proposals within RC districts. For the subject application, only the sections entitled"Streets, Driveways, and Public Transportation Facilities" and "Landscaping" apply [48.17.210(5) and (8)]. These standards require that public streets and transportation facilities not be placed within an RC district unless there is no practical means of access. In this case, the access is preexisting, but must be modified to comply with current street design standards. The disturbance is necessary to accommodate grading that will support a new five foot wide sidewalk. A retaining wall was considered as an alternative, but was deemed to have a greater impact to tree roots, hydrology, and the aesthetic character of the open space. Any lands that are disturbed within the RC district are to be revegetated with plants selected from the Restoration Plants List, LOC 48.17.210 (8). To prevent disturbance beyond the designated impact area(Exhibit 7), a six foot tall chainlink fence will be required to be established along the perimeter of the impact area as a condition of approval. The presence of Oswego Canal, a Resource Protection (RP) district, invokes the requirements of LOC 48.17.300-48.17.315. This segment of Oswego Canal (from the Bryant Road Bridge to the Tualatin River)has been designated as a Class I stream corridor resource. As such, a 30 foot buffer zone is required from the edge of the delineated resource. The existing alignment of the right of way bisects the stream corridor. Similar to the standards for RC tree grove districts, the RP districts require that streets and transportation facilities not be placed in or through stream corridor areas unless there is no practicable alternative. In such cases where streets are allowed, they shall be the minimum width necessary to provide safe bicycle, pedestrian and vehicular access. Again, this is an existing non-conforming right of way with an existing transportation use. The expansion of this use to include bicycle and pedestrian facilities will be the minimum allowed pursuant to other relevant sections of the Lake Oswego Code (Chapter 42, Streets and Sidewalks). LOC 48.17.310(4)(b) specifies that stream crossings shall be avoided, but where necessary, the applicant shall use bridges or arched culverts that do not disturb the natural stream bed. Original plans for the bridge project included rip rap on both stream banks and in the stream bed. These plans were modified; however, to eliminate the rip rapping in the stream bed. Additionally, all demolition LU 99-0069 Page 8 of 19 work and construction work will be conducted from opposite sides of the canal to avoid the need for equipment to enter the stream. In addition, this segment of the canal is subject to specific standards for the Oswego • Canal as specified in LOC 48.17.400. These requirements, however,relate primarily to maintenance and bank stabilization activities necessary to preserve the Lake Corporation's water right and do not relate specifically to this project. The sensitive lands ordinance also stipulates several construction standards that must be adhered to. The applicant will be required to submit a final construction plan that demonstrates to the satisfaction of the City Engineer that adequate protection fencing, district boundary staking, and other resource protection measures will be in place throughout the construction project, LOC 48.17.500. These construction standards also require that no fill or construction vehicles be staged within a resource district. The resource district boundary as shown in the sensitive lands excludes areas in right of way within Childs Road and along Canal Road to the south. The parking area within Canal Acres Natural Area also provides some area for staging equipment and material, so long as pedestrian access to the park is maintained. The applicant will be able to stockpile equipment and material on the gravel area with suitable sediment protection measures in place. Conditional Uses [LOC 48.22.550-48.22.5851 Major transportation improvements, such as a bridge, are classified as "Major Public Facilities" and require conditional use approval in the R-10 zone. The purpose of the • conditional use process is to ensure the use will be as compatible as practical with the surrounding uses and is in conformance with the purposes and requirements of the underlying zone. In evaluating whether this conditional use request should be allowed, the City shall determine that the requirements of the zone are met, the site is physically capable of accommodating the use, the functional characteristics of the use are reasonably compatible with other adjacent uses, and that the special requirements of LOC 48.22.585 are met. In determining whether the proposed use is "reasonably compatible with uses in its vicinity",there is a three part test of"compatibility": (1) proposed use is as "compatible as practical"; (2)the proposed use conforms to the"purposes and requirements of the zone, if any"; and (3) the proposed use complies with other applicable criteria and standards. The proposed development is in the R-10 zone. There is no"purpose" section in the R- 10 zone. See LOC Article 49.06, as contrasted with LOC 48.05.010,48.08.240, 48.09.005, 48.10.300, and 48.12.340. Because the bridge is constructed within public rights of way, there are no applicable lot coverage, setback, or height limits. The proposed bridge will be replacing an existing bridge and constructed within existing limits of rights of way; therefore the site is capable of accommodating the use. Additionally, there are no specific requirements of the R-10 zone relating to transportation infrastructure or facilities, although the conditional use provisions include LU 99-0069 Page 9 of 19 specific standards for Major Public Facilities as discussed below. See also the discussion above relating to "Requirements of the Zone." The final test of compatibility—"as compatible as practical with surrounding uses" - and indeed the recognition stated in LOC 48.22.550(1)recognizes that the conditional uses • will not be "entirely compatible"because if they were, then the use would be an outright permitted use. The obligation of the Commission under LOC 48.22.555 is to determine if the proposed use (a bridge replacement) is reasonably as compatible as practical with the surrounding uses. Staff interprets this standard as requiring that all reasonable effort be made, given the site conditions and necessary characteristics of the proposed use, to make the proposed use compatible with the surrounding uses in the vicinity; it does not mean that the proposed use is 100%compatible, but that reasonable efforts have been made for compatibility. To make the design more compatible with other uses in the area, the design for the bridge has been developed through solicitation of public input. An arched fascia will grace the underside of the bridge to provide a gently sweeping elevation. In addition, the railings will be constructed of steel painted a forest green color and the sidewalks will be constructed of pigmented concrete to help integrate the structure into the natural environment. The specific standards applicable to major public facilities additionally require that the streets and utilities necessary for the public facility be provided by the agency constructing the use. Clackamas County will be constructing the use. Existing utilities will be replaced as necessary, and paving will be provided as part of the project (Exhibit 6). No traffic analysis was deemed necessary since the bridge will not be providing any additional vehicular capacity over the existing bridge. The additional bridge width is for safer bicycle and pedestrian travel, which will not detrimentally • impact levels of service of the transportation system. There are no changes to existing driveways, or fire access roads. Childs Road will have a reduced slope gradient compared to the existing approaches to the current bridge. The proposed bridge will permit easier fire access to sites on either side of the bridge as fire truck will be able to cross the new bridge as opposed to the current bridge. With regard to buffering noise producing equipment, the bridge will not include any noise producing equipment; however,the construction of the bridge will necessitate sheet-pile driving. The pile driver will be muffled and limited to specific hours to reduce impacts on the adjacent residential uses and wildlife areas. There is no lighting proposed as part of this project. Therefore, staff finds that the proposed bridge replacement is reasonably compatible with the adjacent user. 3. The Development Standards applicable to minor developments; The following discussion analyzes the applicable major development standards. Building Design— (2.005— 2.040) This standard is applicable to exterior modifications of a structure which do not qualify as ministerial development. The majority of these standards are related to the design of buildings, however, LODS 2.020 (1)(d)prescribes that appurtenances of a structure shall complementary to the structure on which they are attached. Such appurtenances include lights, signs, foundations, and railings. The bridge design is a standard concrete construction LU 99-0069 Page 10 of 19 1 bridge with concrete footings, and concrete sidewalls. The applicant has proposed a gently sweeping arched fascia that will be attached to the underside of the north and south elevations of the bridge (Exhibit 8). In addition, through the input of various citizens, the railings will be painted a forest green color to better integrate the structure into the natural • setting. The concrete sidewalks will utilize a pigmentation technique to make the sidewalks seem less industrial and again fit into the natural surroundings. There are no lights or signs proposed as part of this project. Street Lights— (5.005— 5.040) Since the proposed bridge replacement project will be replacing an existing facility and no new street is being created, street lights are not required, and none are proposed. This standard is satisfied. Park and Open Space— (8.005— 8.040) The Park and Open Space Standard requires that for any commercial, industrial, or residential major development proposal, a certain amount of open space be set aside. In this case,the project is occurring within an existing public right of way. No expansions to this right of way are needed and no permanent loss to abutting open space areas will result. Since the project area is a public right of way, the open space set aside requirements are not applicable. Landscaping, Screening and Buffering— (9.005— 9.040) This standard establishes the basic requirements for landscape material and maintenance; • however, the Sensitive Lands Ordinance (LOC 48.17.210 and 48.17.310) rules are more specific and are in addition to the requirements of this standard. In this case,LODS 9.020 requires all development abutting public streets to provide street trees at the proper spacing for the species. The list of prohibited plants [LODS 9.025(8)] includes those plants that are restricted from being used as street tree material due to problems associated with leaf litter or tendency of the roots to disturb sidewalks and streets. The applicant's proposed mitigation replanting plan(Exhibit 11) includes 4 bigleaf maples (Acer Macrophylem), which is a prohibited street tree. This tree, however, appears on the City's restoration native plant list. Staff finds that the use of bigleaf maples near the roadway may have a detrimental impact on the storm drain system which could block inlets and cause untreated water to enter the canal. Therefore, staff recommends that an alternate species(such as Oregon White Oak, Oregon Ash, or Madrone)be substituted. Formal street trees as specified in the landscape standard are not an appropriate treatment for this segment of Childs Road,as the vicinity is characterized as a natural,undeveloped area. It is more appropriate to return the disturbed area to the natural conditions that preexisted the new bridge. Staff recommends the following changes be made to the landscape plans in order to make them conform better to the purpose and intent of both the Sensitive Lands Ordinance and Landscape Standard. Planting within River Run park shall include 8 additional Oregon White Oaks in addition to the trees already specified. The existing trail access to the Tualatin River shall be maintained and not obstructed with plantings. This trail shall be shown on i revised landscape plans. The applicant needs to specify the grass seed type and quantity ratios used in"Seed and Mulch Mix A". Alternately a denser planting of shrubs and compost may suffice for the flat areas. The seed mix shall be reviewed and approved by LU 99-0069 Page 11 of 19 staff Shrubs shall be planted at 1 meter versus 1.5 meter on center spacing. Along the Childs Road impact area, Bigleaf maples shall be replaced by one of the species recommended above. The applicant shall provide specifications for"protection of existing vegetation" and"removal of invasive vegetation". Tall Oregon Grape shall supplement t planting along the roadside mitigation area to buffer the residences on the south side. Wit these modifications to Exhibits 10 and 11,this standard is satisfied. Drainage Standard for Major Development— (11.005— 11.040) This standard requires that development not adversely affect neighboring properties by altering drainage patterns. Additionally, this standard requires all storm runoff measures to include pollution control systems and means for regulating runoff rates. Specific measures are as determined by the City Engineer taking into consideration existing drainage patterns, soil properties, and topography. The applicant has provided a water quality report(Exhibit 18) to address the need for providing a pollution control manhole. Originally, a sand filter was proposed, but staff recommended that an oil separator manhole be required instead, as sand filters are not maintained by the City Public Works personnel. The oil separator manhole will accomplish an equivalent reduction in roadway pollutants. Storm water runoff patterns will not be drastically altered from the current pattern, and will not have an impact on adjacent properties. Runoff will be captured on the road surface and directed to the southwest corner. From there, water will be collected by a standard catchbasin and relayed to a pollution control manhole on the northwest corner of the project area (Exhibit 10). The manhole is then discharged into the canal. Two roadside ditches on the• west side will remain unaltered. However,the inlet elevation for the discharge to the canal will be raised slightly to allow for greater water detention and improve habitat along these two swales. Protective silt fencing, ditch protection and landscape restoration will protect the surrounding areas from erosion during construction and afterwards. Weak Foundation Soils— (13.005— 13.040) This standard applies to development involving construction of structures in areas identified as"Potential Weak Foundation Soils" (Exhibit 4). The western side of the canal is characterized as having weak foundation soils. In addition, a portion of the area just north of the project in Bryant Woods Park is listed as a slide area. This standard addresses development of structures that might create additional overburden to the surrounding soils resulting in structural settlement or adverse slides. The current bridge shows evidence of the weak condition of the soil. There are reports that it has settled slightly in the recent past, and its construction is unsuited to heavy vehicle loads. The construction of the proposed bridge will be built to modern engineering standards. The applicant has performed a soils test(Exhibits 19 and 20) to determine what type of foundation and support will be needed for the bridge at its • designed load. Exhibit 20 also shows the results for boring tests taken on either side of the bridge. The soils report finds that the soils are suitable to accommodate the proposed LU 99-0069 Page 12 of 19 bridge structure, and makes certain recommendations regarding construction and trenching techniques. No extraordinary measures were deemed necessary. Utility Standard— (14.005— 14.040) 111 This standard requires that development be adequately served by utilities. The bridge itself does not require connection to any utilities, but is within proximity of several utility systems. Presently, sanitary sewer is in a separate line to the south of the current bridge, electrical and cable lines run on poles over the bridge, and water lines are beneath the canal. The new bridge will include knockouts (Exhibit 8) to accommodate future utilities and conversion of overhead utilities to underground. However, undergrounding of utilities is not part of this project. Alternatives to relocate the sewer line were explored but deemed infeasible. Due to the required demolition, grading, and excavation necessary for this project, there may be temporary interruptions in service. These interruptions shall be coordinated with the affected service provider to minimize or eliminate inconveniences to customers. Any alignment outside the public right-of-way requires a utility easement from the affected property owners. Since the project is occurring within public right of way, permanent utility easements will not be needed; however, temporary easements from the Lake Corporation will be needed for temporary utility pole relocation during the project. These poles will be removed after construction is complete. Disturbed areas will be replanted as specified in the restoration planting plans(Exhibit 11 and 12). Hillside Protection Standard— (16.005— 16.040) • This standard sets limits on the amount of disturbance that may occur in areas of steep slopes. With the exception of the Oswego Canal banks,the project is located in primarily 0-12% sloping areas(Exhibit 5). A small area of fill will be placed on the northeast side of the bridge to accommodate a 5 foot wide sidewalk(Exhibit 6). This fill will be placed at a 2:1 slope to minimize the extent of disturbance in the RC tree grove (Exhibit 14). The toe of this fill will be within a roadway fill slope easement area. The Oswego Canal has bank slopes that exceed 50%. While these areas are not designated as having a landslide potential (Exhibit 4), the banks do occasionally suffer from undercutting resulting from high water flows in the canal. The canal banks will be cut back and replaced with stabilizing rip rap material under the bridge (Exhibit 8)to a reduced degree of slope. Areas beyond the rip rap will be reestablished with bioengineering techniques utilizing pacific ninebark and willow cuttings to strengthen the bank. These techniques are not feasible under the bridge itself due to the plants' particular sunlight and growing requirements. There are no retaining walls proposed as part of this project. Floodplain Standard— (17.005— 17.040) This standard applies to areas that are designated on FEMA's Flood Insurance Rate Maps as being within the 100 year flood zone, Zone A. As shown in Exhibit 3, the project is directly in Zone A, with a designated base flood elevation of 116 feet. The existing bridge has an • inverted beam that"dips" down to an elevation of 34 meters(111.52 feet). While the new bridge will not be any higher, its profile is slimmer, raising it about 1 foot from the canal LU 99-0069 Page 13 of 19 bottom. The standard requires that encroachments in a flood plain shall be prohibited unless a professional engineer can certify that the encroachment will not have a resultant increase in the flood level elevation. The applicant has submitted a Hydraulic Report to respond to this requirement(Exhibit 17). This report establishes that while the encroachment will be wit the 100 year flood plain, the slimmer profile of the bridge will decrease the amount of backflow water that occurs from flood waters"overtopping" the roadway. Since the proposed bridge will replace an existing bridge and increases the volume of the structure by an insignificant amount, the engineer has certified that the proposed project will result in a "no-rise" in the base flood elevation. Access— (18.005— 18.040) This standard stipulates requirements for establishing access points and minimum frontage requirements for new lots. This project proposes replacing an existing bridge structure with a wider structure within the limits of existing rights of way. No changes to right of way configuration, or lot frontages will result from this project (Exhibit 6). Existing access points and driveways will be maintained, although the intersection at Canal Road will be slightly modified to improve vision clearance (see page 26 of Exhibit 14). This standard is satisfied. On Site Circulation - Driveways, and Fire Access Roads— (19.005— 19.040) This standard is applicable to all developments proposing an increased use on a site, when the development will result in the increased use of private streets, driveways, or parking lot aisles. The bridge replacement will not increase the use of Childs Road, and moreover, Childs Road is neither a private street, driveway, or parking lot aisle. This • standard is not applicable to this project, and the project will not impact existing conformance with this standard. On Site Circulation— Bikeways,Walkways, and Accessways (20.005— 20.040) This standard requires that proposed development provide pedsetrian connections between it and existing development where feasible and where walkways abut areas subject to vehicular travel, they shall be separated by a raised curb, landscaping or other physical barrier. A major component of this bridge reconstruction is the provision of adequate pedestrian facilities. The five foot wide sidewalks on both sides of the bridge will be raised 9 inches above the adjacent travelling lanes to provide a satisfactory barrier to vehicles (Exhibit 8). These sidewalks will connect the two natural park areas with the residential development on the east side of the canal. This standard is met. 4. Any additional statutory, regulatory or Lake Oswego Code provisions which may be applicable to the specific minor development application. Tree Cutting Ordinance FLOC Chanter 551 This ordinance is designed to preserve trees. Only those trees which must be removed in order to site proposed improvements will be granted tree cutting permits [LOC 55.080(2)]. Trees within the construction area measuring five or more inches in diameter 4-1/2 feet above the ground will require a permit to be cut [LOC 55.02.020(6)]. Ten LU 99-0069 Page 14 of 19 trees, mostly on private property, will require removal to situate the new bridge due to its increased width. Two trees will require removal to accommodate grading necessary to construct a sidewalk on the northeast side of the bridge. The requested trees are on public right of way, in a natural resource zone, and/or are on vacant property; therefore a Type II • permit approval is required. The tree permit application should be submitted with the construction permit application for staffs review for compliance with the conditions of approval of the subject application, if approved. The trees to be removed to construct the proposed development are as follows: Type of tree Tree ID# Diameter(metric size) English equivalent Ash A 0.2 meters 7.87 inches Ash B 0.25 meters 9.84 inches Ash C 0.25 meters 9.84 inches Ash I D 0.3 meters 11.81 inches Ash E 0.3 meters 11.81 inches Maple I F 0.26 meters I 10.23 inches Maple I G 0.3 meters 11.81 inches Maple H 0.7 meters I 27.55 inches Alder I 0.12 meters I 4.72 inches Alder I J 0.2 meters 7.87 inches This application was filed during the Emergency Tree Ordinance (No. 2226-A) which prohibits the removal of trees greater than 12 inches in diameter unless there exist no alternative site plans that would allow a reasonable use of the property. The property is • designated public right of way. To obtain the proper grading and support for the sidewalk extensions, the 27.55 inch diameter tree will require removal. Staff has reviewed the proposed alignment and finds the applicant's proposal cannot be practicably altered to preserve trees"F" through"J". Realigning the bridge to avoid the removal of these five trees would require additional right of way be acquired and would have consequences to traffic safety and vision clearance as well as would likely require the removal of an even greater number of trees from a different portion of the site. Moreover, removal of these trees will not significantly impact soil stability or erosion potential as erosion control measures will be instituted throughout the project and replanting of better suited species will replace the trees proposed for removal. The presence of a large number of other mature trees in the area also means that other trees will not be compromised as a result of the requested removals, and the proposed replanting to occur will offset any immediate impact to the character of the project area. Also, the significant backdrop of other trees will help mask the removal until the replanted trees can become well established. There is insufficient demonstration by the applicant, however, to justify the removal of the 5 ash trees (trees "A" through"E") located on the northwest side of the bridge. The construction plans show a sidewalk and guard rail being constructed in the area, but there is simply a lack of clarity in the drawings to ascertain whether these trees will be in fact • impacted to the degree that their removal is required. Without this information, staff believes that these trees may pose difficulty in constructing the sidewalk and guardrail LU 99-0069 Page 15 of 19 but do not prevent the construction from occurring. Given the fact that these are located in a public park, in an RP resource district, it follows that every effort shall be made to preserve and protect these established trees. The project impact area should be the minimum area to maneuver and stage equipment. , Staging areas for stockpiling soil and backfill material and storage of equipment and materials shall be accommodated within the gravel parking area in the park and on the asphalt area of Childs Road. In addition, six foot high chain link fencing will be required along the perimeter of the project impact area and around the five ash trees to be retained as described above. The applicant proposes to mitigate for the tree and vegetative removal by replacing the trees with young evergreen and deciduous trees and native understory plants (Exhibits 11 and 12). This replanting is planned for areas within the project impact area, as well as River Run Park to the southeast (Exhibit 1 and 23). A total of 49 new trees will be planted. However, as specified in the applicants mitigation plan, these trees are specified as No. 5 container size. Staff concurs that the 28 trees planted in river Run Park should be a smaller size to encourage their natural establishment; however, staff recommends that the trees planted around the project impact area, which can be more easily maintained be planted at the following minimum size specifications: for deciduous, 2 inch caliper minimum; for evergreen, 8 foot tall minimum. As noted above the bigleaf maples proposed for roadside mitigation planting(Exhibit 11) will need to be substituted by another native tree species. Staff finds by the imposition of conditions, the requirements of Chapter 55 are satisfied. 5. Any applicable condition of approval imposed pursuant to an • approved ODPS or prior development permit affecting the subject property. The proposed project will not affect any prior approvals on the subject property. The replanting within River Run Park has been reviewed against the conditions and limitations of that park as provided in SD 29-78 (Exhibit 22) and was determined to not conflict with those conditions. IV. CONCLUSION Based upon the materials submitted by the applicant and findings presented in this report, staff concludes that LU 99-0069 can be made to comply with all applicable criteria by the application of certain conditions. V. RECOMMENDATION Staff recommends approval of LU 99-0069, subject to the following conditions: A. Prior to the Issuance of a Construction Permit,the Analicant/Owner Shall: 1. Submit final construction plans for review and approval by staff. The • construction plans shall detail location and type of tree protection fencing and erosion control measures and their methods of installation, location of LU 99-0069 Page 16 of 19 construction material and fill stockpiles, and location of staging areas for construction vehicles. Tree protection fencing along the perimeter of the project impact area, as shown in Exhibit 7, shall be 6 foot tall chain link fencing attached taughtly to posts driven into the ground. This fencing shall not be required on the • east and west ends of Childs Road to allow for construction vehicle access and additionally shall not be placed further than 3 feet beyond the edge of the top of the canal bank. The construction plans shall also include the temporary traffic control measures as noted in Exhibit 13, and stipulations to permit local vehicular traffic to utilize Canal Road to the south and permit pedestrian access to Bryant Woods Natural Area to the north for the duration of the project. Alterations to the project impact area shall be permitted only with express written consent of the City of Lake Oswego. Construction plans shall also reflect the five ash trees on the northwest edge of the project to be retained unless the applicant can clearly demonstrate to staff that their removal is necessary in order to construct the improvements as approved. 3. Submit a revised landscape plan reflecting the following changes: a. General: i. Specify the grass seed type and quantity ratios used in "Seed and Mulch Mix A" ii. The seed mix shall be as approved by staff. Alternately, a denser planting of shrubs and compost may suffice for the flatter areas. iii. Shrubs shall be planted at 1 meter on center spacing iv. Provide specifications for"protection of existing vegetation" and"removal of invasive vegetation". b. Planting within River Run park: i. Include 8 additional Oregon White Oaks in addition to the trees already specified. ii. Illustrate the existing trail access to the Tualatin River and show that it will be maintained and not obstructed with plantings. c. Planting along the Childs Road impact area: i. Bigleaf maples shall be replaced by one or more of the following species, Oregon White Oak, Oregon Ash, or Madrone. ii. Minimum planting size for trees is 2" caliper minimum for deciduous, 6-8 foot tall evergreens. iii. Tall Oregon Grape shall supplement the planting along the roadside mitigation area to buffer the residences on the south side. 4. Determine the location of the City of Rivergrove water line and provide a revised utility plan to the satisfaction of the City Engineer. 5. Provide financial assurances for 120% of the value of materials and labor to implement the approved landscaping plan, to the satisfaction of staff. 6. Provide signed copies of any necessary construction easements from private property owners for review and approval of staff. • 7. Provide copies of any and all required State or Federal permits. LU 99-0069 Page 17 of 19 B. Prior to Any On-Site Grading or Construction. the Annlicant/Owner Shall: 1. Establish and fence the construction impact area. Install the 6 foot tall chain link S tree protection fencing and erosion control measures as required by condition A(1), above. 2. Apply for verification approval to remove the five approved trees (F-J) as described in this report and identified in Exhibit 11. Should the 5 additional ash trees (A-E) be shown to be necessary to be removed in order to construct the sidewalk and guard rails, they will be subject to a verification process, as well. Otherwise, any trees not explicitly approved through this approval will require a Type II tree cutting permit. C. Durine Construction. the Annlicant/Owner Shall: 1. Ensure that materials, soils and debris are stockpiled and equipment staged only on asphalt or the gravel parking area, as required by Condition A (1), above. Appropriate erosion control measures shall be in place around any stockpiles. 2. Ensure that disturbance to vegetation is limited to the designated construction impact area, as shown on Exhibit 7. Any trees damaged by construction(aside from the trees approved for removal) shall be replaced on an equivalent diameter- inch basis. Landscaping, surface restoration, tree and shrub planting shall be required for all areas disturbed by construction. In addition, the contractor shall be responsible for penalties imposed for the removal of any trees without a tree cutting permit. If damage (to bark,root systems, limbs, or canopy)occurs to protected trees during construction,treatment as recommended by a certified arborist shall occur immediately. A copy of the arborist's recommendation shall be immediately forwarded to the City. 3. Properly abandon defunct public and private utility lines and reestablish new utilities as necessary to the satisfaction of staff. Interruptions of service must be coordinated with the appropriate agency and contingencies shall be in place (if needed)prior to disrupting said service. 4. Implement the approved traffic control plan as shown in Exhibit 13. Additional signage that may later be deemed necessary shall be the responsibility of the applicant to provide. 5. Maintain erosion control measures as approved as part of the construction plans as noted in Condition A(1) above. 6. Grading along the Oswego Canal and Childs Road shall be feathered into natural grades and final grading shall be smooth. In other words, no large dirt clods or tire tracks are to remain. • LU 99-0069 Page 18 of 19 7. Provide and install straw,garden compost, or other approved erosion and dust control measures over all disturbed areas until the approved landscaping is installed. • D. Prior to Final Insnection Annroval or Within One Year of the a Date of this Annroval. the Annlicant/Owner Shall: 1. Install landscaping as approved under Condition A(3). EXHIBITS 1. Tax Map 2. Sensitive Lands Map 3. Flood Plain Map 4. Soil Suitability Map 5. Topography 6. Site Plan 7. Project Impact Area 8. Bridge Plan, Elevation, and Cross Section 9. Comparison of Revised Bridge Width 10. Utilities Plan 11. Canal Tree Removal and Mitigation Plan 111 12. River Run Park Mitigation Plan 13. Detour Route 14. Narrative 15. Supplemental Narrative 16. Neighborhood Meeting Minutes 17. Hydraulic Report 18. Water Quality Report 19. Geology Report 20. Soil Boring Results 21. Tualatin Subbasin Fish Management Plan 22. SD 29-78 Findings, Conclusion and Order (River Run Subdivision) 23. Plat of River Run 24. Plat of Canal Acres Date of Application Submittal: December 23. 1999 Date Application Determined to be Completed: February 2. 2000 State Mandated 120-Day Rule: June 1. 2000 • LU 99-0069 Page 19 of 19 / 2e.22' 66.00' ?9 AS' 94 00 �� ya y' ! , ,40 135� ,� 19603 28 1271. ry 119 \ 5' Y� `� . ._...- . o, r y • 40.D0' 4024 13 r, - 34 a V 1001 I �� ,,� ? .\\N 135 ' •do- V. • �o 26 , :� 25 v U ^ �. 17 a �_ ''o 19630 COti 129 s /z�.�a 3 .i.�ar A pA 126 br. 120 .� ` �:' P a2. �+�o0 0v I9611 i Q 19G26 n v,�•♦ Q 19619 i�c 4 _ - '' 0' V 0 0 1Fn tc a ' DO 134 ��oo- 33 • o "7 ' N�_y q u�G'E 24��� w 18 '� /5' 19664 • ., p ��3) f,�? , <c89 0 ' -a,� �h 130 I. 125 %;.,ay+/ tl � j/. oo w Ji � • o /`,, - 19653 p 19654 6' �. ?R' 121 i Cr) 1 ,./ 'mil Rr .,.c p 19657 -:o�. ., 32 ap Z3 h ^► g • \31 ' .a.' • ' ' / .... 41 , 124 3697' 3 --- ' 19 181 It 122 ' .a a 123 7 132 • : . .....,t 0 , ilz. . » / , p o N;� 40 44. o w mi 4" / ,ti /3.04• 31 iG3.oa' 3'' s 70.ei icz.c� 21 • 98�G' 20 Q• .25``' O it B ISO:3G.'E' • S D' � Ti P '7 4�v r 4 i;+-.! 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ZONE B i Oi Ty .. . : F.-- ;, °' Aj_ ,I Clackamas County . 1 I c AREA NOT INCLUDED i__J f-. r ti EXHIBIT 3 .� zfl'._ --B4 -=: • LU 99-0069 ti.,_,-.4.-,5_,.:3__.- 5 ` ZONE B tea t► �,�11 CHILDS ROAD k1 I_I� ) lk".,2,c CHILDS ROAD '16 `y q.'• LASS LN O Ur'04 i�� — c I /IiIVERVEW ,. 1.--' DRJ1O_NS INN 4 A ON THIS PANEL .. 1' ' • 1.e.--•:-,4,"-T,›JI" / 1 , , i Y :". ........ k.--a-,-;-•..--:--”.,7.4,.',U7.-.,;7;.,- ..-__ 7' -'-' ---,-` ,..2•,.. -_ ,._ - •,, T-....z.___-,.,.z._- :',,_.... 141/ _ 1144411111:4I 44_N_.*__54 _ I ( .., ,I i 11-j: 1 • - , - i i'lrlz.' NV ,. , / ---,;. f•-.Z,'::4,:g1,41 ' 1 , ..., 't,.. , _ --_ —....-4...t.;,---,,,,,, ,..7,-, •' , ., ;".- -- -.:, "'---'-,---,.-'-. '' •''.,, l'.),,rtilglk,..'341 ' I '''' ' '--'---'- ,- . r-,- -' •=7._, .41 . .4i.t-L-- • - '''--. 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''. ',..---4,,,e.:, .-,._,..-r----.. _--1 .I._ ,-1 i -n : - 4-•,,,.-*•,..,-.: ....,,•••„-_,..-,&-_.,, • -.-- ,•,- 1-- , :4 • 4 I I1,_ 'M_ '•• '.-1 • I .1__ I i _..._1- I a__r-1-,L-I -- ta _i_ -,.. ,r,„ • - t 1 , i s , • , rdire7mre#4:- -, -all - 1 4.4--:"11111,, k ,! •, ' - 1., ) -4?-.111'.4k,a,--•-•.4":41r.".410.414 i li :I- ; --1-1 ----4------- - -4-- :. 7-'r--1- --k- , I I- - 1 . ...,. -,- -r•-•'-,r 1. • i ''';‘''''F 4iit4.44P' '''.."4,4:-'64'419.2P.4:'..1..-,...13'-`-• ' / 1 ',_. ' ..` '' r''''Ipi:.4,40111,"_,Ai- ,._ ,411,4'w..40.0.4."' -•‘".' — ‘,...,.•11 ......, — .......,-1 i ,, 1 _--- ,-?,,,,4.. 1006-,pcorv.v„.6-4k _ - ,.. 474.00,4 ' L --7....".••• ' ' ;":..-_. ,..... .a 0-1160T.AMP-4, f°;1:101Ftli.--- 17 ..._... .... __ --,„... , ., • • :„.,. . . - ..., v., ., ......„.„ :•_. . ._...,. . • ..-„. .....• , _ ._ .. •,._-r V- , 1, . . . _ ..., '3 1,\:.- .,,-:_ ., ‘• -r' 1 r" ' \ 1- . I I- , vir.....-.Abi a.a kn-NS-. _ . . -- , --4 ,-.41F-....r1 t, 4,„ s, i:_i • i_,,..—,_:,. . . , ' ' --)- ;.--.:c.0.-0'4 i r• ( . il , Ur icy , A -_.....,_ ,, , , . _ . . - - .Lr„ming - 4 T'Itie 44 .) -.it %.)- - . - - , 1"...1 - 7......,4 i . ,.„, 4., ... I -- ''.. 4te ..>. ln •I'.i :1/4.; 1.), - :-- - _ ___ ,A 7.1"0- 0 I 0 ......• •rs.1 EXHIBIT 4 - T T 401- - . ., ' . . ••:,- - i : 1 I I A Or' .-dir IX 99-0069 L , 11 - '''' _art7,1)-----=- --'" '••;-1 . , • J v4/000 ■ • • .� � ui O 0 0 CONTO•1 „, , ,, ,,, ,. . . UR MAP1 .1 7' I., ':': ‘P.I.Atil, '.. ',',',",; 'p. ', ' T. • I, • • • I ,I'i,,, ',. ..-- . , ,, ,, , „„,,,,,,,, , , „ \ I: I 'I WOODS ` , N'', r.Qe•• o dill .loge-" PARK � I ►' rA,_ --- -x---max`--x�_erX _-•-�-, �F� •:1L .11.ii, r'" y�- 'I I� ..---- c I UH D •, ' ' � . , .,., • _ ----- - 45.-- ::.--_ : _ \D\\ \ \; �� •:::•', Toe �If •Fill Slope • • • -------------------- \‘ k CC 16._\ NIL , , �1 I • •• NOTE, 431, DimeNions Are Shown !n ', • • r� —All Iv' ' Meters Unless Otherwise Noted. 1-V 1 OSWECANAL (LAKE0OSWE00) SEC.E • O '� CHILDS-ROAD CtACR MAW-COUNT Y iCOCRLL MCRRAT RRO(CT CMCCR Sr[Cf SOW WSiRAl10R p• REGION I OREGON �� 10 DIVISION C.. ARAI • • • i � 0S O 0 0 ;4 1 + 1 • , 1 7 7 il 11 'ICJ. .: , Mote 7YS_ .1 Bryant + iz/ _' - 25m 'liosle , • 0.9m Flr r rr rc ,- V111��� Woodc \ m Ash l ,1 0.2m Maple , + . m Maple!41 ! ‘ ' I Pork ' r, ' )'0.2m Alder i I , +,'0.3m Maple •i -.. l3?- ;t. _-�, 0.15m Alder I rt City of Lake Oswego ' i.z,\ r ,_ . ., --� ,t ,, 0.2m Alder -- t I Y op I of Canal Bonk Alder es (0.2m-I'3m)A 1 10.95m Fir (Dble.Trunk) Top of IC nal : nk t+ ,_ m.. 1-'•- 02m Alder , `;.-,-e� I ,. , ,1 Canal Corridor Bu fe 0, m}.• ,.R 14 i , p T I j 0.25m Maple h � Ei t _� r , c5m Ma le. J �.. r a `-�-•- ,> 1,, I , ro.2m-o. S - —"Robert H.Eaton E N m Canal Corridor',B fer gm:� , t Y ç -� Njx 0: Flr 0.1 m 0.2m Alder` o 1/40 x ,+ 0.7 I( / O.T_m 7 ,\e .'� . ,.JCD 0fl. t t 0.6 , C +. E n Nm CD 6. ASR P 1 ), ,'� 1ryry�,,,r 1 `• _,.j� O.Pm Alder o o E v,_ Q� o) + 21U.pj)+ ' f{ 0.15m aIA' Ii 0.21 Maple • 0 �D �'.a 1 � 0.3m Maple(3 Trunkl O + ( Ilfg 0:25m O. Ideft. ,-I ` 0.26m Maple 1 + ' `111~ X j. I• 1 F Welid,.d`�r - '*---- — - ,��, �I .` Paving CHI LDS ROAD _ , . or _ 1'I — Ed i I �11�� - -" - - - - —limits - - —(, - Paving �'. ��. 1 r�v �� - J Limits , / _ _s'• IN fe %--l-4-U.? m Lecid. ,.A,. CHI L OS ROAD __ _ _. ; = Uh1'S ` '7"r �- ----_ — ` --- Edge or Welland -7- - `.. g ,� attl\_�!�� 1.• F-._ ence _ _ fJ Ornamental Tree - _ALL T'0o -Of -.Tf `.onk.1 o.2m A11dtrr2l p ,& A.N.ASh0u ,__. — _1/. _` , c(-\ ` o �—;anal Corridor Buffer - + 1 ._N)r .1.: 0.3m1 Ma. 0 rl. \��• . _ anal Corridor �G et 1 �, 30I1, ‘runk �- O.7 m Decid. t Decid. �7 r �'� - 1 m Canal Corridor 0.25m �Ider,� ` +l- t�f " v, Mapl O.1� m City of Lake Oswego r0.lm-0.15m1 aDle'+ r• ti{ 0.�` & 15m Male neCid' OSWEGO CANAL rCHFL05 ROAOJBRIAGE •0e429 Four Trun Il, 11, -�T1•2• •Ide I 1 al Of anal Bonk A I / r ' n, 1c1+`' - '0.3 -0.2m Mop — (.'LAr'AAMAS (COUNT}. ORE60N C J_, � — - \t - ` b/e.Trunk Prepared By:O.D.O.T. ✓ J —J �/ �' +++I r�~ 110.2 Alder r0.25 Maple r1rr;,t:r. !?Q4 0.25m Mope ++, tt.7 . .-t7`- Pm •sh X — — r_ C_' r- CO • • S :1 1 0 • S S ` • ROADSIDE DEVELOPMENT PROJECT IMPACT AREA 1 ( pr E//2 0 Plant The Following No.1 Container Shrubs I Space 1.5 o.c.: °1 e c�' - -�;�= /�Ex;sting vegetarian - Protect fAOprox.230 7I 1 1 rr7 !n Place.T yp. Aces-circinotum - 12 P oC f- - - O I'�/ Hdod;scus discolor- 15 A ProjectImpact PdysNcnum mun;lum - 35 "-ire p; r Area Rays spectabilis - 10 Remove and - _ I f'� '-1. SombuCzls racemoso- 20 Rep'oce_5 trees arYan` _ _ - O 1-•-� - Remove one Sympborioorpos Altus- 10 W000s r• Park • r � � 1'f...1. Repl oca I Tree I A a-r1•-1', cl' Q Pfont Tee Following No.5 Container t21 - .- r I' °Q 6 J 2 Deciduous Trees: =' .$5 _ I''?' ,p 105 nlr Acer macrophyl/um - 4 025m t rrf `t ^i `e.�-S1 - ,.�_ �' ! Alnus ruaro-B J-02m Ash ,: �_ nnA��! -" ,fl .•.--i '', .1 . , eY �� i y <',^,II• t'�`r��: • y ' . Q Plant The Following No.5 Container ', • R,.. /l�,..,,^ —.J-Jw 1 Evergreen Trees: :00:00:R. ••=ra:.0... . - PSeudotSugd men2lesi;- 3 �-^r� TAujo plicate- 5 --- CHlLDS ROAD _ - — Tsuga neterovnylla S �P.. ---- -^_ _�. -- _ — _ — _ _. ,I — O Plant The Following Shrubs Along The Edges _ _ Of The Canal Riprop As Nolen On sig.R2 - — --____ —— 1a ` .� ` Ph socor s / �/ �, Y pu Cap7atus- 80 Mai Cont.) _ — — 1 _ .--_ / ,rrr+�-..•.. I���',' ',.G•*•5' ••110.% P. 'll, .. x— Sous at chensis- 80(Cut/ingl Il 60 mt O Seed And Mulch Mix'A'All Distorted Are05: �_ 10 Project Impact Ar " \ Mix"A"- 230 Isle mrovide And Place 150 mm Depth Topsoil 0 \ 000 3 In All New Planting A/Cos: 'ro ject Impact Area ,• O - Topsoil- 35 ml f _r- 1, n Remove one X. 9 :V 1, ;,m;: 2 R plots 4 1 sell ,s r- , /tetra1 D.2 m Alder ot,` ,>L f J PLANTING NOTES: r I ,:r '� - .D 1.No Planting within Limits Of Riprop Or Bottom 11 .L. •1 j' $ N .mac *Cr Ol Canal. _ ' - • • 2.Preserve And Protect Existing Vegetation To �y-.- 1 N. t,rl R Remain.See Specifications C. ` O O O I _v , -\ -r" \ tiii I r ' N in o Sta 1 OSWEGO CANAL BRIDGE (LAKE OSWEGO) SEC. CIIILDS ROAD CLACKANSS COUN1T I FEOLRKI R TIlW PROACI'we ete I IV AOe1MIe1RATIM Ne, I REGION I OREGON DIVISION I RI L, C. F.A 1-+ 1 • • s • -- - HYDRAULIC Proposed easement RAULIC DATA S, Note:Elevo n orn bit tab o✓ \\J.lt1 7 �a i� L`k web ng,surface along€ o/bents or IrEI•S l uetsr OCs1a Bist w.pmaL[ \:9®J E - ,,... I-.-I NOTE, gutter line, t100D Rao row 1 4_ ^3 Limit Riprap protection beyond the -- _ IDISCIWK,E u.L•i 41.J 59.9. I24.0•• � �'' y r Lys - r - /V € Bent I edge of the structure to those areas _ _ ___ _ \\ .k.: I��: {� • '- disturbed during construction, € Bent 2 I FREOuEICY ITESJ 50 100 500 F r ` -Jay I tc ., � (Sta. 10•144.00 19.00 m Slob lO.1LJDO lv,EEEv,hi UPSIREAN e I 450 man I� raCE a BmiDa aEDc ruu•ra uv,.. Cots lop rlgap 8 660 Precast Prestressed Slabs r51o0 Na 81 Sl/ee�z�[dw��q.na BR12p I vl S�b5 35.ft 3591 'rap_ p R / 0 , �r•,i \-Waterline e,0o 45 : o- tit¢_ right-at-way E16Mcn •ERr 'i/• _( �1.(SI� _' i `y■,f ! 1�� _'j} - _ ---__t _ 1 I BACKWATER I r,.i IOD2 OD5 003 ,�e�l 1. (- / I l-E/CC1Rc,7y Line, Vij� 1 • 55,7 m3/s through the bridge and 42 m3/s over the rood. ,,,, Sec21.TJtrR/E.W.W.M, NE/ev.J5.507 1 rim.J6.181� o`. .� N07E: •• 54,0 m3/s through the bridge and 70.0 m3/s over the -' _ /) 7// / IA Bents are Parallel. E.tst:rig aldge•6*29y��Tl/) B VICINITY MAP Z to be removed -'i 186.05.ron-fan r I 9p, $g E S c �� (No scab/ sta. 0•154.05 PT h F o N 86't5'02"f terrrEr ---'-rE--- I. -- 1 s i - ._.-. NC JO.165.% Deck eravar;oms shown ore lag d wearing surface E u m Ear 3620 •€ bens and 12 m L r-old 42 m Pt. �� I ,/,7, �+ PVC •1 2A0 Min.ACWS 50 man New inlet I • c Ism boding Pont, ^ EreV JS.JS Anticipated camper 1 J mos. SJ man Elev.J6.01J'J Downward due to ACwS•sidewaltsftils- -19 man Std.conc.rail guardrail Ironsittan -` `", '`` - 19105'S5"CR I h .S55X ,� wearing surface thickness•Bents---- 6e man tech sale wastendi ` pr RA0.300.0 M st '-Finish Grade r-50 min.ACWS. we dog.BR203. r E..'PMA22 Sheet pile T • 18 450 .-.-..+..--j - l - - ----I —— - L • 36 860 ♦ f .ii r.1wr//raiiiw...m,/i/�._ ■ • dIJ".!!Id" .�1$r�j O o'B Propasad Stricture Telephone line - "r a Slott j4 Build-up r Uilgr etg •Beals Existing right-a-way--1 ro 0 «rocolea GRADE LINE DIAGRAM A,C.W.S. BUILD - UP S—� -- -- S (() (No scat& L$ftwef Line DETAIL Ex;sltnq rtghl-al-toy NOTE, Nofe, r Proposed eosemenIJ - An Utilities to a GENERAL NOTES: ��-_ Sower manhole— Dy oerors. g O.srnead(y�Nlir;es to Oe' _ ractocored relao led oy others. ' PLAN -- ' AN material and workmanship stall conform to the 1996 Standard Specifications for Highway Construction of the j n Scale: WOOOregon Department of Transportation, s Concrete members ore designed by Load and Res;stonrx Factor Design Method ILRFO!1994 with 1996 and 1997 updotas.; Std.Sidewalk Mounted Combination Rail, Bridge is designed for HL-9S loading with on allowance of 19 Mimi for present and 12 ON/re for future --40 \see dwg.no.811216 wearing surfaces. _ Ran Pay(;mils•18.35 m Seismic design is in accordance with the AASHTO LL'ylsian !-A,Seismic Design.-Standard Specifications forHighway ,;, J00 I, 9 spaces• 19.72 m oLlyp, \ .I•700 Bridges-.The Bile bedrock acceleration coefficient(Alis 0.19g. s » JJ All rein!arcing steel shall conform to ASTM Specif;cotion A706M.or AASHTO MSMM(ASTM A615M Grade 420.Field 1- • • - 1 bent stirrups shah conform to ASTM Speciffaction A706M,The following Notice lergIAs shalt be used unless shown otherwise. f '—- r ` Bar Size 0 13 161 19 22 25 29 32 J6 57 21 —355 • Splice rl�,rj'�,red 14 1100 7W 600 850 11075 1400 1750�2150 14.3 Not rmthed , ._ NJI;S1b5 I C en In pally 15 _ I_ Pin Arch fascia €�// -II tmm� Cooled c 550 700 850 1175 1525 1925 2450 3000 Not Aermtlled / PP325x95 rlypd W — 450 man thick7.2•5}. 1k _- II Epoxy coal reinforcing steel in the upper portion of the sidewalk.This includes all bars extending from the slabs c 0 — (Class 100 tiptop . l l— III into the sidewalk. v yD3 _— —� E� Place bars 50 man clear or Inc nearest face of concrete unless strewn otherwise. di —JO II LI. \� - - II abTm Mointoin existing Dolton, of channel. Do not fabricate reinforcing steel for abutments until final footing elevations have been determined in the field. cp I F Concrete in precast -- nt PMA22 Rt. I prestressed slabs shall be Cross 30 - 25.4 or 19.0 and shall attain o minimum strength d 27 MPa -_ Sheet pile nt before prestressing force is applied.See dwq.no.XXXXX. m Another concrete shall be Class 25 - J75 or 19.0 i — Prestressing steel shall Je M accordance wiM detail plans. a'Elevations strewn ore Dosed on ELEVATION METRIC US Coast and Geodetic Survey All stfuCturd steel shall Conform to ASTI,/ Specif cations A3611 unless noted otherwise. e, .-, —25 Datum 1929. 'WOO All structural sled.including fasteners and concrete inserts-stall be h01-di !putk,A/tali:ions ore in millimeters/mmniexceol as noreda p goNanl7ed alter IopiCor;an, 7 ' D.,n ■I nslm er Heidi Skeen DESIGNER BRIDGE ENGINEER TOREGODEPARTh1ENTOF [MIME� I SHEET L rv.■s /../Ky .� A" A TRANSPORTATIONloonBRIDGE ENGINEERING SECTION oA>E CHILDS ROAD. CITY OF LAKE OSWEGO _z E I °""' •4-ram CLACKAMAS COUNTY MG WOK I PLAN AND ELEVATION ;n v�'ir' j�■,�, ACCOMMM1KD■.owns ea1s0 ERISS ER2031 eRtic,BR420 OQOO 1 ,ew.m Scott a Liesinger -- .rear..�..r.....- ...., ...r. � r••e•w , 1^ u gum io I •actor,avrua. I Q z_ C ►e-,. EXHIBIT 8 to LU 99-0069 For w;npwall Details. 51.8 mm a 690 m smooth dower(AJ6 or warily) `m at each end of box beam.Brill 38 mm dia.a 305 mm deep Benr' see Dw0•no• - into p%lecop after box beams ore In ploy and lie rods have 4 Bearing been tightened.Use low-impact rotary drill.Place 50 mm dia. Rom' x 25 mm thick polystyrene plug on lop of dowel.Fill remainder 240 420 m 420 m I al hole with non-shrink grout ���-- EII \ See X71NT DUAL `A` 140 '� E C E AGlYS w/warerprool membrane • 13; 50 min. r g • -� • — — —-—' footlway R — . .-.II '.{3 _.1_ �Ilt .I_ .f_ .(��1_. _I. )- € bent, brg. -1 c)_'. _ . — �—gin -1 �.�_.1Jxcony. ..' a 1 �I/ F �iI \I I - Oow Caning 902. poured See Gamete Pod Oem7 6/1 i - .4 I I I I 13 mm prefoormed expansion wooer. orapprovalcowl. 6-•19 w/ 90'rook eo.end r 15 U-hors`a2`• 300�"� I I I I ;Dior filler between sidewalk Blackout upper pardon a _ 1 joint wilt)polystyrene foam. BENT 2 PLAN one ro;lporopetrtyp,) I I I I Score: 1,30 I I I See Special ntams;eri for ` •ro tie can o 900 alternate joint material. 2-•1J x cont.---- '--- I 11 I I - 1-� I I I l�_------ I g r •1J hoops -ol-o J00`I 1/ / Cr:no 6x45'daoMero from atrb to gtrb I � ?of ter placing nosing, I i Jog 150 m 8,40 m Roadway 1.50 m 308 I Ti fist Sidewalkill S:dewdlk ' Rail ^�• f// Bauer Rod TOp I/ —11 50 a. 20 preformed PP325 a 9.5 (rya) 400 expansion joint filler. :II N N - I JOINT DETAIL "A" I leo Some _Wit- SECTION A-A B r1J mm prafonned [I RdwY 20A Tyne"Er Polycnloroprene compression Scale:1:25 700 expansion joint filler A I seal may be sobs;toted.For joint derv;ls $$ Gyp.) 5-•1J u-Dacs"oJ-•• SOt7! See dwq.xxxxx/a Utility not shown.see dog.no.BR140. S 1 z L oya,t(each sides. ,Z •• ••'1_1- 4-•13 U-Lars"M"• 300s 580 8 o oho oho ol0 0.--------•---------,--1 o' 1� Bent y sidewalk 1—Joint Belo;!-6-or"F- .S ti I I I 2-•1 J x cant.w/90' ) See dog•na.BR755 : ti. iJ±J1Ei1H ] __ T{._I •IJ U-bars-PC'o 300_ 10' 2-•1J x 1800 r'. b L _ srd.lwox 0 ea end Q Q 1 -I ,-1. •13 hoops'at-0 300 w/srd.90 nk. t5 25 '�Iq I - �4-•1 J x cent. 't' i _-.. ..a Eley.33_760!Bent 11 I / i lY I [Iii [ 1 Elev.3403.4(Bent 21 2-•13 x 1000— �•IS U-Dorn"oJ"• 300 u •10 r:e bars• 900 B I I A I 6-•19 w/90' 2-•15 x coot.- . •10 Re bars 0 900 std.hook ea.andI I I I g +rJ hoops`a1"• 300 .o ` 6-.19 w/90'took ea.end 1 I I I I . PP325 r 9.5 Ityp) (top& btm) 3000 l 1500 1500 j� - FOOTING NOTES., I l5a All piling shall be PP325 a 9.5.,ASTY A252 Grade 2,driven close-ended to o on ultimate alpoc;ty of 2400 ker. m ! 0 Cl. �'^, _BENT 2 ELFVATJON (Beni 1 $iRiilQt ) Pile lip elevation for minimum pile penetration shall De 23.0 m and 25.0 00 stole, t 0 for Bents 1 and 2 respectively. lLbok:ng ahead on station) All piling shall be driven to toe specified ultimate capacity using driving criteria —g 4 deyeloped from the Gales Equation wirf a safety factor of 3.0. SECTION B-B W Scare:1425 ►!� z 7E 1 i s N07E4 A((dimensions ore in millimeters rmm)except os rated.I a Wing. ►• DESIGNER • art Wing. Hera;skean BFlmN'hF W0. SiSIEE7 3 OWKA L _ w7117 OREGON DEPARTMENT OF TRANSPORTATION DAIS OSWEGO CANAL BRIDGE wow BRIDGE ENGINEERING SECTION 7-..,'Iyyy- WING$0 �`-- _-te `BOOx BENT DETAILS 00000,1'■aww..... ..$ppff Q LTaflnp6r rs•es 450 - . . '6:7'" • IIII • OSWEGO CANAL (CHI L DS ROAD) BRIDGE #06429 BRIDGE TYPICAL SECTIONS Exisliii�,l Wi.,llr f,., ;mill (22 i 1.1 ___ _________ - - io, ,...„... .__. .. / Travel Lone - Gam}— Trovel Lone l3mJ - _.1-: . - lam) — As ph. Mal(3-1 0.076m --- Oh IT; 51 ' 0.1778n1 I 1,,i. Jerk (7") /N / N. i ) 7 . Existing Width l_ i� r A ( / / ) ) 1., 5 Ft 6 Ft 2 >_, 12 Ft kis 12 Ft 2 Fl 6 Ft 5 Ft -" 5tdewai Shoulder Trovel Lone TrovelLane Shoulder 5fdealA (I.5m) I (I., il) I w(3.6m) (3.6m) (1.8m) (1.5m) L L A2 ' Original Proposed Width (Liske6) -— - - 11.94m ( 39'02.1" 1- - ) — 5;57,( l9' 07.04" ) x ----- -- -5.97,( 19'07.04" )-6 - - —' 5 Ft x 4 :Ft —10 Ft ---e-- —10 Ft (1.5rn1 (1. m1 X4 Ft >: 5 Ft E— (3m' (3rn) (1.2m) (1.5m) - Sidewoak slope 2% `:idewolk I Oswego Canal Bridge ( Childs Road ) A0642 .1 C:� slope 2i - - slope slope 2% Clackamas County County Road ° 848 -� CT1 Revised Width — -- 0.D.0. T. : fir,,je .r Manui•jar : Mark Beesrrt Proposed ,, oil. I. ader iam Weitherr(39 Feet) ;Igners : Iod1 I_ilo.s DOrl Gib60i 1 t r • • • 0 � 16 O 0 • • 31V-$$ ter. EXISTING LITIES & R -I AGE II " ii— Sec. T. S., R, M 0 Consr,Woter Ouafity Manhole Consr.type"CG-2"Inter o.+orals,, A.rwnn9 _Ste J.cawwv. Const.Type"ME"Inlet 33 eb & p .!•]1'IY ..•,,,, M,y 4 ten anwoo a 95-017q! e n reeve Yp y r+ T r 29.979 m �', .!P.,,, ,ayn ;;J;41, A 9e-W77se lnsr.b00 mm Sew.Pipe- 40 m NI It �, "qM 1 ,a��,',, (For Dos mm Sew.Pipe- 20 m 0• ,;.,` 0 rfar DeroNs.see sot.za-2r • e r' rsee Oro•Nos,RDJ00.RD324, '''AP 'r�' I : r';t` , 1;�,t, RDJ27,RD336 & R03J91 t tie �I' {,en.I�9e- `.: 4 b�, rx - s79 ~a -' ... o.o n1rt'Nod �, A .'• �r. • - le ..x t °�. ,t 'rl r e.+.r ur . .La 9 I x A Cexi r.so w „C9P 2 __ 7�' lr _ ,',^'+,.rF ---- -E _— — O Consr,Type"ME Mad.^!oral © ,4 r ,- �,9r ,ty _ - - — -. .,.. r - -- lns1.600 mm Sew.Pipe- 36 m .. s „..pf 4 O4 '° ICJ — ,1111- `�' '0� .+w 2T,r ter' _.- x� r,� .wy,. O Remove Infer r— ,� �.,.__ .--t • -•- ._— • ,!�f�=rfiteec " `... • - we raw—AS i�;' eonsr,t ype^B-st^Inter --= i►l:'. Fr'.`°1 ' -�� ,i fps 'gyp 00.01 Insr.b00 mm Sew.Pfpe- 20 m -- - ... -- -- -- �" - --- ; ,r ,.!¢31•,,,, ', I;�^ '�� '! .rF.owl it b 111•� n+` • • , e __ __. �, , .. .. : I, ;0; IP.aI. Awa, a ++ e e e9 r+5 \/) O lost.300 mm Pipe 24 m n. , \ , . , k s t Connect To Exto.Pipe C-' \ T j0.�2• +f •r 7p O Adjust Son.Manhole ,«<000D�4OR�77 O -23 D $ O 'r City o/Cos aa.soe � - \ e 9s-/+v9e s b 6 ` I 11 ) e / 8�r r ANAl ACJ��J \ eo f € rn • Vi—- ` �,�.. g 40 a '2 •22° Este.5tSew.F,L.J8�7.Rt. I I n { _ 0 'rofiM - ¢ ,/ 9 Exrp,San Sew F.L.392 Rt. A. - id v O I 38 37 -. • ,. One• -. 37 Ili! _/ / I.44 FJ..s47,R►lC ln1el F,L.;7,J.L! r, y I I � '75 Sediment Jr fJ.J4.7,Rl. —r JS 34 II III II ��� NI JS IIIIf --I II y Og •120lntel�.L.3.�2,LI. ✓ II A� _NOTE, _ _ y All Diment,ons Are Shown In 1� - 32 / �, Meters Unless Otherwise Nared. +118lnrerf.L.32.T.Rr. } p •12e M tFIL,33,],Lr, O OSWEGO CANAL BRIDGE Pr, (LAKE 0&WE00)SEC. c� CMaDS ROAD sn •14S Inlet Fit.35.G,Rr. �'1 —etACuwS Count• MGM MOIST MAC,MWyE. I eMEV _ 10+000 10+100 I 10+200 POYISPIWIPP REGION OREGON 3,A L_. it• ,. t0 (DIVISION • S S ROADSIDE DEVELOPMENT STREAMBANK IMPROVEMENT PLAN i@ //„ Q Plant The Following No.1 Container Shrubs Space 1.5 o.c., "`� Existing Vegetation - Protect (Approx.230 mel I In Place.Typ. Acer circinatum - 12 '. Holodiscus discolor- 15 + ON y�1:„ Polysticnum munifum - 35 ' '.. ' r ¢+ -tip., T Remove ana ` ' Audis Spect°a'Iis - 10 �i. Samoucus racemes°- 20 Replace 5 trees Rry°^i ,� Remove one Symphoricdrpo5 AIDuS- 10 �� wooaa - � 1 �: , eploce I Tree D.Jm a r't Pork ill. "• oa Q PION The Following No,S Container r2l 0 a 000 *Q Deciduous Trees, �,i �� 55 +� bE /05 m= Acer macrophyllum - 4 0.25m n I �'k.>� `7.o Ail. _ _-- �' _ Alnus/ubra- 8 /21 T�n p� _O - _ 0.2m Ash - ' : M- t,'• (•�,•�� ' 11 �fr'-' ,Pt �•�k- O3 Plant The Following No.5 Container `� i', 'r�► f �,•7 +a,a/� 7„ev:.�..�.699(1� Ifi Evergreen Trees: I„� m .�+ :�:r.:.:.. :.:.:.:.:rr:r.. `.— !, _s Pseudotsugo men5;asli- 3 XC �,!/G:_ Thuje plicate- 5 ;"'- �._.-- CHILDS ROAD _ _ Taupe heteropnyho- 1 We r — — _ — _ • g _ —`- — — _ '� V Plant The Following Shrubs Along The Edges .p -` --_ _ _ — „ I�:',Y.= Of The Canal Rlprap As Noted 0n SAt.R2 lus --- _ 1 — __ \ 7 r+v"". 'riI '� f2 _T,��1 �w Ier�l/,AO PI: - x Soys sflche cap- - 80 g J Conti • J • !,p'[ x— Solix sliahensis 80(Culling) ( :,.% ,- - � _ F' 60 . . Q Seed And Mulch Mix "A"All Disturbed Areas: 1 --= �"— ---r 1 10 \ Mix "A"- 230 mt ` ©Provide And Place 150 mm Depth Topsoil 0 \ 0430 COIn All New Planting Areas; 00 Topsoil- 35 ml ',,11� * Remove and �O, ���, ReoloO e`es Is lip 9o ,,.r % (.t )0.2 m Alder F 1 PLANTING NOTES, ,; o .0. Q 1.No Planting Within Limits Of Riprop Or Bottom 1'11 , � >< z N Or Canal. AOj t1{ E E 2.Preserve and Protect Existing Vegetation To ` ti 1,.1 N Remain.See Specifications. 1;1 '. ` 0 O O 111. , ',, 40 I)1 CI\ '1�e \ No SCaIe ' olsr�y I OSWEOO CANAL BRIDGE 4� en o 'PACIFIC (LAKE OSWEG01 SEC, ��,� I CHILDS ROao U Ut Lams' ne Aw.NIM.Ur Ave CLACKAMAS COUNTY YAVe.Te,OeWON rnrr PIE! �� OREGON `r .IIr.W..Y I r.eNPMSivvroMr PROJECT LAMER xO. r�l f xxf Lies• I o.e.eeea Rye V.$ffi° I Sporn Sr.T.Tfafe'i I!REGION'OREGON I R I cn.a..e ay.';,p!fs.-__ IO DIVISION C-1 f.... co S S ROADSIDE DEVELOPMENT 'ADVANCE PLANT 1, CANAL SLOPE PLANTING WEST CANAL SLOPE EAST CANAL SLOPE , Top Of Bank I ^_.. Top Of Bank Top Of Bonk L. I Top Of Bank Planting Area Planting Area Is Area Area is Disturbed Width ;.. RIP-RAP Is Disturbed Width is Disturbed Width RIP-RAP 3 Ts P,u„ Width Plus 7 meter - Pllus T inekr Plus tarter 1 AREA _ Water Elm'3078 AREA September.1995 a a For Planting Details No Plants In Water Or Rip-rap Area Pacific See Page RI Pacific Hlnebark T Of Ban, __ Top Of Bon r�Ta,� • x... k t 00 5°v.. For Planting Details " Wlllav WlfSee Seedlings I2 See Page Rt P1orI1 iTycv Seedlings 51 Top Ojil Width ,ITTd°� While nto dagrolgo _ Wder EfeV.3078wnTdarSegember,l995 Seeoningope Wder Elev. • Plans Placed NOT TO SCALE OJ m oz. 4�°`�7�4� W&HPACIFIC .....Niwu.MOIL .•ILK►.IItA .IMVIRTOKORWON•IM �, } OREGON WA tue.ru aauiwsrnATOn I r.OJCeT uae[n I 9:0E: ie.", kits`". IO.nen.e it,CRT. IDrawn Or UHF. REGION OREGON I I R2 en.awb Bp r.,aw t0 DIVISION 1.. 0 • 0 „ 22 • • • ,gth. i Finish Grade Stoke.Bury 2/3 Of Stoke 72 Below The Soil _• Firmly Pock Soil Around Stoke. _ Do NOf Break Stoke(Na"1"Of •- p _ Existing Soil i" "1"or Brea I Existing Slope 1�i�////r/ - A Pant Roorttall/Container Sail r—j—r ONTAINER PLANTING STAKE PLANTING -Clump& Scaler Plants So that Average 100x750 Browsing Plant Tuaeling® Random Planting Density Is Equivalent To Grid Protector With Slake. Spacing As Shown On Plans Spacing (Paint Stoke Dark •Typiaat orlon Center,Planting Grid Brown) • Straw Mulch VOA rectifier In �•r d Rough Seeded Areas Only Finish Grade Firmly Pock Soil Around Tuheling 7 7J So row Na Air Pockets Remain. Do Nor Bend Or Break Roots. `Randomly Kr Plant Species Specified Fertilizer �� Existing Soil -Offset Plants To Avoid 51roignr Rows / GROUNDCOVER TUBELING PLANTING PLANTING PATTERN C;? C - i 1 co L • 0 :; :2 41 S S • c P1AN R 0 A D S I D E DEVELOPMENT lir=me^ PLANT LIST AND BID LOG • BOTANICAL NAME COMMON NAME GRADE CLASS PLANT TYPE SPACING PLACEMENT IN ZONE TOTAL SHRUBS Acer circinafum Vine Maple No. I Container Natalia-vs discolor Oceansprdy No. I Container x mm o.a. Palystichum munitum Swordfern No. I Container Irregularly Group • For Natural Ruhus spectabilis Salmonterry No. I Container Appearance SamD racaaso No. I Container uxu m Symplusricarpos alto Snowterry No. I Container . Physocnrpus capitus Pacific ninebork x Top/Toe of Riprap Slope Sall..sticltensis Sitka willow x Top/Toe of Riprap Slope x DECIDUOUS TREES Aar mocrophyllum Rig-real maple x Alnus rubs x Red alder 4 m oz. EVERGREEN TREES Pseidalsuga manifest; Doug/os fir x Thu/a Dial," Western red cedar r 4 W a.. Tsuga helerophylla Western cedar x SEEDING Seed Mix "x" 230 m2 'J FP 22 4; tel 44 N asys a W Ww W W P =rt Z. Cl F13- cc R WO Q OZ 0 O i „ E yo , O F 8 yO o e. Q p 4or e . t7 a a.0 C C }a� ` rNl k p • ti a i c a a_ a S I Unis —. Ea. Ea. En. Ea. Ea. Ea. En. Ea. Ea. Ea. Ea. Ea. I Ea. Ea. En, m211 I P I I I Rt 230I I TOTALS 230 N 4iGt5TER6 WVHPACIFIC 64 e nr o p now U.$nll..... .LAVLR1ON.ORROON NM ORErAN NANl 4HrIA rlpnx151LA ON= .eo.[CI M)RCR 1 a" . ra 5,!4Desm '.^el,!.Tenn"' REGION OREGON �' '.• r�rr Atpe rra..dw ee..T,+!w...._I..Oa i0 I DIVISION R4 C, • • i �► 26 O III III ROADS : D E DEVELOPMENT ~ RIVER RUN MITIGATION PLANTING PLAN T C) O Plant The Following Na.5 Container Deciduous Trees Acer mocraphyllum - 7 Alnus roam- 9 Fraxinus latifolia- 9 0 Plant The Following NO.5 Container Evergreen Trees, Pseudotsuga nlenziesii- 3 I, r ,T' 0 Plant The Following Shrubs(Size As Noted) Space 1.5 cc., (Approx.380 m21 k Acer circinolum - 8(No,1 Cont.) / Holodiscus discolor- 17(No.1 Cont.) Gate laity' Polyst(chum munilum - 17(N0.1 Cont.) p Rubus specta0ilis- 17(No.1 Cont.) Somoucus rocemosa- 17(No.! C6) 4.,:'' Cornus sloron,Yara- 43 (rio.I Cont.) Sex V� Rasa nu konaa- 8(No.1iCC Cont.) ,�, �, ei _ Q Seed And Mulch Mix"A"All Distur0ed Areas, Mix"A"- 380 mt Q Provide And Place 150 mm Depth Topsoil +r" !nT 1p 'u-P57rris Iti 0il;"9'0 jh0 air' 01) r en 000 s.c)�., � m River of Tualatin Riv • N , 4 Existing Vegetation - Protect MITIGATION AREA NOTES, In Pldce,Typ, 1.Contractor Must Clear New Planting Areo Of All Existing Invasive Vegetation.including But Not Limited To Himalayan B)ockaerry. 2.Field Adjust New Plantings To Preserve Existing Pedestrian Pain. I Maintain Minimum 1.5 m Path Width. 3.Verify Access To Mitigation Area With City Of Lake Oswego Prior v '0 I0 iv To Construction, hT METERS 4.Contractor To Maintain Ali Newly Planted Plants And Seeding For pI STe OSWEGO CANAL BRIDGE A Minimum Of One Fall Stowing Season.Maintenan0e To Include QE nt PFD f �71 p / (LAKE OSWEGO)SEC. Regular Watering And Weeding As Required To Ensure Healthy, A y s��—IHx.. II.IFIC cHILDS ROAD Vigorous Growth. ..es�.w.Nlw�u�.r.. cL�[a�ua5 ci.er BI011R R.ISM W VtnTON.OXott OREGON ~ rMP al4MM F.....„ mLBxL Ierww�r PNOJCCI Nuecn ygET f e�IMISi OREGON I I NO. CIO 5.Protect Existing Vegetation Where Noted,See Specifications. .tr4,1 af,tkti Ow.la.w Sys rPr. !Orson Br,c.pwn IREGIONI OREG I I R2 cn�al..o By.+f.!'!t.... 10 DIVISION I 1 S • S . 28 • • • : :, TRAFF I C CONTROL PLAN v x I glswR To Be accompanied By Dr4•MosRD90o.RD905,RD9J5 b Th1100 , LAKE OSWEGO OSWEGO CANAL BR _� too a°� 0 n n o ON CHILDS ROAD =� DM P+IIE2 1219K610 O _ Type"mrJ" f2 Rawl) CLOSED AT _: 120) — CANAL ROAD _� N Repd! irs iii a.ouwr ,� ... Lx. .7 .. (Race As DlreCfedl 762K610 T62x914 w Cl.d ; of •,�,` s n y/Li f2 Racal 12 Read( :, -- .N 7/ 4'." 1 i 1 ji 1 ' "' 1 f" ofr i C171 e iii_,.., ill p• , sic 1 >[�... x., e.4r S3: ' .t� j \ 762K610 g! F' ` ..cc sr. a al •n O (J Reed) 762,914 r D a • pp _, j ,uuar.L.. M. • 5(i i. c' Si. a _yY u z .ld ��,, b' 7621.762 :' ii le $ y,, g' crag l• �,« Ili ) + t wm762�t9N Type"W2" r. �e LLJJJ ��� _ I Tr FI,/ � r2 Read1 12 Requ1 ss _ ,°' ,,,i•.,, ,n "rzr.eee -1 zr.^yes wow, +•f— og. O 0 2A m await O O8 07 4 u• o� I. r Repd1 d.~ :..z. .crr e ■ ���aEo me Iral.x r1 . 7 ' ,o ' ,.[x i. t1 ..x s LY. ..„).or �' �� W rr' fS ., i IL ........ l 1 • a cr O r S +_t, r l �" o g • um ro.l O 762x762 e, '> mi. ,7 a e a 1 1 I Tree 62" ,e Y Zl e l VI Y l �I >< �� 1 fIB�If /mod r2 ReQd1 O ... VIA( ` / '. _ _ WORK SITE + I 9 1111 . I RIVERGROVE W .� �� Pop.AID �i, ROAD _ CLOSEOI ' 1 �23rNOBH �_ -� #. s D © I �r211e9 62 y fYOrw+f On Sign $cmporfl ® TVAG ATjN _ a R ER r2 Repol 111\ . 11—i �se.e9rues e a o JerHOr . J 2 e 2 1 s 979 --I 1016 l— ••.• DETOUR ROUTE 3er/10 , I I� CM I, III ` I. RI sieAs e Seora 1K StirmiR Wass Wassii i.i�il do Ale�Tnew `q Olhir•(ie IOIH Lwow SWDI SAS Frr I TRA+F^C TROL PLANS A DETAILS 41 nel9a140 ,,,� /� " �°OWEGO CANAL BRIDGE MARE OSWEGO)BEC _ TEMPORARY SIGN SUPPORT (TSS) Iy"' CHILDS ROAD , Q� wr M••we.N twwe rw r4� 1 aauuus Wwir y' L ee• U,�� �'�l + MASIOD P1161Li MRIU SALT` I I __[_____ I REGION I OREGON @��- 17C:- 'N.r,. , 10 DIVISION Zp AO I` -. .. Cs..'..; J • • 0 'vJO S RECEIVED CITY OF LAKE OS `ids GC Dept.of Planning&Development Land use application for: Oswego Canal (Childs Road) Bridge Clackamas County Prepared by: Rick Keene Oregon Department of Transportation November 1999 • • EXHIBIT 14 LU 99-0069 ■ A Table of Contents • Comprehensive Plan Land Use ` . . 1 Open Space, Scenic, Historic, Natural Resources 2 Air, Water, Land Resource Quality ..15 Natural Disaters and Hazards 18 Parks and Recreation 20 Public Facilities and Services 20 Transporation 21 Chapter 48 Zoning ..23 Chapter 49 Development Code 27 Development Standards Building Design 27 Street Lights 28 • Transit System ..29 Park and Open Space 29 Landscaping Screening and Buffering ..30 Drainage 31 Weak Foundation Soils .37 Utilities 38 Hillside Protection 42 Flood Plain 45 Access 48 Site Circulation 48 Other Ordinances (, ,) Chapter 42 Streets and Sidewalks 49 Chapter 52 Erosion Control ..54 Chapter 55 Tree Cutting 54 Exhibits: Project Plans; Bridge Plans; Landscape Plans; Project Impact Area Site Map; Canal Corridor Site Map; Hydraulics Report; Water Quality Report w/Drainage Design; Geology Report; Bridge Narrative Report; DSL Permit; Neighborhood Meeting; Typical Section Drawing • pre-application conference.doc �� 0 J 2 Type of Application IIIa. Ministerial Development Review (DR) Neighborhood Contact a. Affidavit of Mailing—enclosed b. Affidavit of Posting—enclosed c. Minutes of Neighborhood Meeting—enclosed Comprehensive Plan Comprehensive Plan Designation: PIC/Oswego Canal and R-10 Goal 2: Land Use Section 1: Land Use Policies - 6, 7, 9, 24,25, 26 0 6. The project purpose is constructing a new 38 ft. wide x 61 ft. long bridge over Oswego Canal on the existing Childs Road alignment. This includes two 5 foot sidewalks, two 10 foot travel and four foot shoulders on both sides. The affected properties are owned by City of Lake Oswego and Lake Oswego Corporation. With the exception of fill slope extensions, all design elements stay within the existing right of way. There will be minor impacts to the adjacent properties due to construction and toe of fill extensions. Dedication or preservation of park land or open space does not apply in this case. 7. a. There are no "unique or difficult" site conditions. The terrain is relatively flat and the new Oswego Canal bridge is being built on the existing Childs Road alignment. The Oswego Canal and a small wetland area (ditch) north of Childs Road are affected temporarily during project construction. Impacts are minor as construction takes place during low flow periods of the canal and low wildlife activities in the wetland area. b. "Open spaces" are not an issue in this project. The natural resources involved in the immediate area are a small wetland area (ditch) and the Oswego Canal. Impacts are minor as construction takes place during low flow periods of the canal and low wildlife activities in the wetland area. • 1 pre-application conference.doc 0 'v �' 3 1 r c. Impacts to the adjacent properties are due to the construction of fill slopes as part of the new bridge and bridge road approaches. The fill slopes will encroach on • the rights of way of said properties. The impacts are minor as they do not affect the existing"uses" of the properties. 9. Inventoried and designated natural resources in the immediate project area include the Oswego Canal and a small wetland area (ditch) north of Childs Road. Both areas are being "preserved" by means of special plantings of native vegetation and minor design impacts (elevated outflow pipe). 24. The project proposes to construct a new bridge over Oswego Canal on the existing Childs Road. Potential negative impacts may include a road closure during construction; construction noise; encroachment of the fill slopes on adjacent rights of way. Appropriate detour signs minimize travel times and lengths. Fill slopes of maximum grade reduce right of way encroachment. "Muffled" construction equipment confine construction noise to the immediate area. 25. This project is identified in the Public Facilities Plan as "T-56 Childs Road Bridge". 26. All appropriate project stakeholders have been involved from project inception to design approval. Public meetings were held October 26, 1995; September 5, 1996; February 27, 1997 and October 14, 1999 to discuss and resolve project • issues. City of Lake Oswego, neighborhood associations and local residents contributed ideas leading up to the accepted design. See attached minutes from October 1999 meeting. Section 2: Community Design 2, 4 2. Structure and landscaping plans are included in the Land Use application packet. 4. The subject project proposes to replace the existing bridge over Oswego Canal with a new structure. The new structure includes approved architectural design elements — bridge guardrail - that without compromising public safety, blend as closely with the local environment as much as possible. Other visible design features such as bridge approach guardrail, while not necessarily aesthetic, provide an essential measure of safety for vehicular travel. Goal 5: Open Space, Scenic, Historic, Natural Resources Section 1: Fish and Wildlife - 1,2,3, 4, 5, 6, 9, 10 1. 1111 2 pre-application conference.doc 0D34 a. The project proposes to construct a replacement bridge over Oswego Canal on the existing alignment of Childs Road. With the exception of increased roadway fill slopes and normal construction activities, there are no serious impacts to the canal area and the small area of wetland (ditch) north of the roadway. Any vegetation removed as part of the project will be replaced with native plants. See landscape plan. b. The existing roadway passes over and through a USB floodway and floodplain (Oswego Canal). The new bridge will provide increased water flow capacity of the floodway due to an increased elevation and larger canal opening. The roadway fill slopes will encroach into the floodplain area slightly but will not cause any rise in the 100 year flood plain elevations. See attached Hydraulics Report. c. Stormwater runoff from the roadway surface is not currently treated for pollutants before entering the canal system. The installation of a "stormwater manhole" is included in the project to reduce discharge of roadway contaminants into the canal. See attached plans. d. Trees and vegetation in the immediate area of the new bridge, will out of necessity, be removed for construction activities. All disturbed areas will be replanted with native vegetation. See attached landscape plans. • e. There are no impacts to identified upland, forested or hillside areas in the immediate project vicinity. 2. No species listed or proposed as threatened or endangered under the Endangered Species Act have been identified within the project vicinity. Construction activities will increase noise levels in the immediate project area but will be abated by muffling the equipment. 3. a. The subject project to replace the existing Oswego Canal bridge will temporarily impact the canal "zone" around the construction area. The area will be restored with plantings of trees and grasses native to the area. b. The proposed project to construct a replacement bridge over Oswego Canal does not inhibit the existing wildlife passageway except during actual construction. There are no provisions to upgrade the area beyond planting native species of vegetation. 4. a. The Oswego Canal and a wetland area north of Childs Road are inventoried wildlife habitats in the immediate project area. Impacts to those areas are unavoidable due to bridge and roadway expansion and nature of bridge and road 3 pre-application conference.dor..\ U construction. The project area will be restored to a pre-existing condition with plantings of native trees and grasses. Impacts will be minimized by limiting • construction noise levels, confining the project area to minimum design limits and restricting construction activities to periods of low wildlife activities. b. New roadway sideslopes will slightly encroach upon existing floodplain "habitat" west of the proposed structure. Some vegetation will need to be removed as part of construction. All removed vegetation will be replaced with native plants and grasses as indicated on the landscape plans. c. The project passes over a stream corridor (Oswego Canal) and is adjacent to a wetland area. Impacts to those areas will be mitigated with plantings of native vegetation, essentially restoring the disturbed areas to a pre-existing condition. d. There are no "upland habitats" or "forested hillsides" within the limits of the project. 5. Vegetated "buffer areas" disturbed by the project will be replanted with native vegetation. "Ongoing maintenance" of the project area will be the responsibility of the City of Lake Oswego. 6. Native plant communities disturbed or affected by design elements and construction activities will be replaced in-kind or with approved native vegetation • as shown on the enclosed landscaping plan. 9. Wildlife passages through this area will not be impacted to the extent possible commensurate with construction activities considered normal for this type of project. Construction will take place during the summer, a period of low wildlife activity in the area. 10. Wildlife functions and values will be preserved with native plantings of trees and grasses in areas disturbed by construction; maintaining canal flow during construction as directed by Lake Oswego Corporation; and, daily inspection of the project construction by ODOT personnel to ensure contractor compliance to the Specifications of minimal disturbance to the adjacent wetland and park area. Section 2: Vegetation— 1,2, 3, 5, 6, 8, 10, 11, 12, 13, 14 1. All vegetation removed due to construction will be replaced with native trees and grasses following City landscape requirements for the project. See enclosed landscape plan. 2. Some trees and vegetation will be disturbed during construction activities. The • project contractor will be directed to minimize all impacts to the area vegetation 4 pre-application conference.doc 36 per ODOT Specifications Section 00320 Clearing and Grubbing. All disturbed • areas of the project will be replanted with native species of trees and grasses as indicated on the enclosed landscape plans. 3. a. The project proposes to replace the existing bridge with a structure on nearly the identical road alignment. This approach assures minimal impacts to surrounding vegetation and maximizing the preservation of the areas trees. b. The property adjacent to the project limits are owned and maintained by the City of Lake Oswego and Lake Oswego Corporation. As this is a local agency project, no dedication of land is required. 5. a. The project contract will stipulate that no tree over 5 inches can be removed unless in direct conflict with the bridge construction and designed roadway features. Plans show that ten trees over 5 inches DBH are affected. b. Construction and landscape plans have been reviewed and approved by City of Lake Oswego. • c. Daily monitoring of the project construction activities by ODOT inspectors will assure compliance with the approved plans. d. The ODOT Project Manager is kept informed of the contractor's daily activities and compliance with the approved plans. 6. a. This project proposes to replace an existing bridge. "Visual enhancement" is accomplished by installing a textured bridge guardrail, adding a selected color to the bridge concrete mix and landscaping any disturbed areas with native trees and grasses. b. No changes to the existing land uses are proposed for this project. "Screening and buffering" are not included in the project. c. Impervious surfaces are increased inside the project limits due to a wider bridge and accompanying road approach. Surface water runoff will be directed to a new stormwater manhole to provide water quality treatment before entering the Oswego Canal. Cleared areas will be planted with native vegetation to maintain • soil stability when construction activities allow. Full erosion control measures 5 pre-application conference.doc 0LJ37 will be implemented per ODOT Supplemental Specifications Section 00280 Erosion and Sediment Control. • d. Except during construction, local wildlife habitat will not be disturbed. Disturbed areas will be replanted with native trees and grasses as shown on enclosed landscape plans. e. There are no buildings in the project area. Vegetation for a "reduction of energy use" does not apply in this case. 8. "Tree planting" is included in the plans of this project as shown on the enclosed landscape plans. 10. The project contractor will be responsible for maintaining the planted vegetation as stipulated in the project contract. The City of Lake Oswego will be responsible for maintaining project landscaped areas upon contract closure. 11. This "public works project" is designed to minimally impact the surrounding area by constructing the new bridge along the existing road alignment and building steep, but protected, roadway fill slopes that significantly reduce encroachment onto the adjacent canal and city park lands. 2.a • a. The project will impact vegetation in the immediate area of the construction zone. Provisions in the project contract will include steps to ensure minimal loss of vegetation due to construction — ODOT Specifications 00320 Clearing and Grubbing. Plantings of native trees and grasses in the areas of impacts will be provided for in the project contract. See also enclosed landscape plans. b. Right of way provisions specifically for tree planting is not included in this project. c. There are no plans for an "ongoing planting and maintenance program"beyond an initial planting of native trees and grasses as part of the bridge replacement project. City of Lake Oswego will be responsible for maintain the landscape areas until established, approximately 3 years. 13. The project purpose is replacing a bridge over Oswego Canal on Childs Road. There will be minimal impacts to the surrounding area. Public acquisitions and conservation easements will not be necessary and are not included in the project. 14. There will be some removal of vegetation in the immediate area of the bridge construction zone. A landscape plan to replace and restore lost vegetation is enclosed. • 6 pre-application conference.doc 0 38 Section 3: Wetlands— 1, 3, 4, 5, 6, 9 • 1. The project proposes to replace the existing bridge over Oswego Canal on Childs Road. There is a small wetland area (ditch) adjacent to the project area. Except for construction activities and small amounts of ditch work alongside the wetland, there will be negligible impacts to the area. 3. a. The existing wetland area will be preserved in it's entirety. The ditch paralleling the roadway serves as the drainage conduit for the area and will be reconfigured to maintain the existing runoff and wetland capabilities with a elevated culvert pipe. b. The project will not directly impact the wetland area. No loss to the wetland is expected. c. The red-legged frog, considered an "Species of Concern", apparently inhabits the wetland area near the project. With the exception of construction noise, there will be no impacts to the frog's environment. Construction noise will be reduced with approved equipment muffling. d. The project will widen the existing roadway to accommodate new bike shoulders • and sidewalks. The roadway fill slopes will slightly encroach upon a wetland "buffer" in the northeast quadrant of the project as indicated on the enclosed project plans. There are no provisions for land dedication, deed restrictions, or covenants for this project. 4. The subject project proposes to replace Oswego Canal bridge on Childs Road. Childs Road runs parallel to a small wetland area (includes ditch) northwest of the existing bridge. The existing roadside ditch serves two functions - convey runoff from the road and runoff from Bryant Woods to Oswego Canal. A slight adjustment to the existing ditch alignment is needed to accommodate road widening for the new bridge. The ditch flow rate and capacity will be maintained. 5. This project is funded with Federal funds for bridge replacement. Federal requirements stipulate review of impacts to all resources including wetlands. City of Lake Oswego and the Oregon Department of Transportation are also reviewing project plans for compliance with the local codes and ordinances in reference to wetland issues. 6. a. The project to replace the Oswego Canal bridge includes roadway widening for new bikelanes, sidewalks and shoulder fill slopes. The fill slopes will slightly • encroach upon the existing ditch drainage system for an adjacent wetland area in 7 pre-application conference.doc V 'v � the northwest quadrant. The slightly altered ditch is designed to maintain existing conveyance characteristics with no impacts to the wetland. • b. Construction activities for the proposed bridge replacement will require removal of vegetation in the immediate project area. Plans call for replacing all disturbed areas with native trees and grasses as shown on the enclosed landscape plans. c. The project to widen Childs Road and replace Oswego Canal bridge includes provisions for treating roadway surface stormwater runoff by means of a "stormwater manhole". The manhole is designed to eliminate roadway contaminants before they enter the wetland buffer area. no roadway stormwater runoff will be conveyed to the wetland area. 4. A wetland area immediately north and east of the proposed project will be preserved and protected in its entirety as no work will be performed in the wetland zone. Section 4: Stream Corridors— 1, 3, 4, 5, 6, 7, 10, 11, 12, 13 1. The project proposes to replace Oswego Canal bridge on Childs Road. Except during normal bridge replacement and roadway widening construction activities, the Oswego Canal stream corridor's "function's and values" will remain at current levels. Construction work is planned for the summer months — a period of low • water flow and fish and wildlife levels. Vegetation removed for construction purposes in the stream corridor area will be replaced with native trees and grasses as shown on the enclosed landscape plans. 3. The stream corridor area will be impacted by normal construction activities as part of the project to replace the Oswego Canal bridge. The contractor will be instructed in the contract provisions to minimize disturbance to vegetation around the work zone. All disturbed areas will be replanted with native trees and grasses as noted on the enclosed landscape plans. 4. a. Construction activities related to replacing Oswego Canal bridge on Childs Road will temporarily impact the stream corridor of the Oswego Canal. The project will be monitored daily by Oregon Department of Transportation personnel. Contract provisions will be explicit to address the requirement of minimizing stream corridor impacts. All disturbed areas will be revegetated with native trees and grasses to retain the "function and values" of the canal. b. Except for the widened area of the bridge there is no loss to the stream corridor area of Oswego Canal. No fill material will be allowed into the canal channel. • 8 pre-application conference.doc r V v •t c. The subject bridge crosses the Oswego Canal, a designated stream corridor. • Construction activities that include clearing of vegetation for widening and added roadway fill slopes will impact the stream corridor area. Fill slope extensions will be kept to a minimum and disturbed vegetation will be replaced with native trees and grasses. d. Dedication, deed restrictions, and easements for the sole purpose of preserving the subject stream corridor are not included in this project. 5. Childs Road passes through the Oswego Canal "stream corridor" so presumably the Oswego Canal bridge "uses" the stream corridor. The stream corridor's "functions and values" will be temporarily disrupted due to bridge and road widening constructing activities. The stream corridor will be returned to a near pre-existing condition commensurate with the affects of bridge and road widening at that location. All disturbed areas will be replanted with native trees and grasses. 6. The proposed project to replace Oswego Canal bridge on Childs Road is located inside the city limits of Lake Oswego. It is a Federal funded project designed by Oregon Department of Transportation for Clackamas County. All agencies have been involved with the review and approval of this project from the project's inception. • 7. a. The project to replace Oswego Canal bridge will include the removal of stream side vegetation and stream embankment changes in the immediate project area. The project contract provisions will be explicit for minimized removal of vegetation per ODOT Specifications; providing new plantings of native vegetation in disturbed areas; and providing erosion control measures to prevent sediments from entering the stream. b. The stream corridor is owned by the Lake Oswego Corporation. There are no provisions in this project to dedicate land or provide easements for the sole purpose of preserving land and riparian areas. Easements and right of way takings are for the purpose of providing the necessary cross section for a wider bridge and roadway fill slopes. 10. a. The project to replace Oswego Canal bridge on Childs Road will not require any "diversion or impoundment" of Oswego Canal. All structure work will take place outside the stream channel with no impact to the natural stream flow. b. See (a) above. 110 c. See (a) above. 9 pre-application conference.doc tl •t 11. The project to replace Oswego Canal bridge on Childs Road will include removal or streamside vegetation to provide additional area for a wider bridge and • roadway fill slopes and to provide an area for normal construction activities. The contract provisions will include revegetating all disturbed areas with native trees and grasses to an extent possible. (The canal slope area under the new bridge will not be planted but instead be "protected"with stone embankment material). 12. see 11 above. 13. The project contract provisions will contain language that will make explicit the need to limit all construction activities to the immediate work zone and to minimize disturbances to those areas as well; ODOT Specifications Section 00320 Clearing and Grubbing. Although the area of disturbance includes the stream corridor of Oswego Canal, the contract will call for revegetating all disturbed areas with native plantings and full erosion control measures to protect and preserve water quality. Section 5: Distinctive Natural Areas — 1, 4, 5,8, 9 DNA Number 1-Bryant Woods Park 1. a. Two Distinctive Natural Areas (DNA's) are in close proximity to the Oswego Canal bridge replacement project — Bryant Woods Park and Indian Springs. • Oswego Lake is also a DNA and is downstream from the project. The project area does not physically encroach on Bryant Woods Park and Indian Springs areas. The existing water and air quality of Bryant Woods Park and Indian Springs will not be directly affected by this project. Erosion control measures — ODOT Specifications Section 00280 - during construction and placement of stream embankment riprap will protect the quality of canal water flowing into Oswego Lake. b. Bryant Woods Park and Indian Springs are in close proximity to the Oswego Canal bridge replacement project. Oswego Lake is also a DNA but is over one mile downstream from the project. The project zone does not physically encroach on those areas. The existing fish and wildlife habitats of those areas will not be directly affected by this project. c. Bryant Woods Park and Indian Springs are in close proximity to the Oswego Canal bridge replacement project. Oswego Lake is also a DNA but is over one mile downstream from the project. The project does not physically encroach on those areas. "Community benefits" of the area will remain unchanged except during the construction period of about 2 months. d. The project to replace Oswego Canal on Childs Road will not directly affect the "open space, passive recreation and visual enjoyment of Bryant Woods Park and 10 pre-application conference.doc 1 0 � 4 2 Indian Springs except during actual construction of the project, about 2 months. • Access to Bryant Woods park may at times be limited to eliminate potentially harmful conflicts with construction activities. e. The project does not physically encroach on the DNA areas described above. The new bridge will be located in the 100 year flood plain as is the existing bridge. Fill slope extensions for added roadway width will project into the 100 year flood plain. The project will not affect the two DNA's ability to protect the public from flood hazard, geological instability, or high erosion potential. 2. Bryant Woods and Indian Springs and Oswego Lake are already designated DNA's as shown on DNA Map the Land Use Map of the Comprehensive Plan. There are no plans to add to the Comprehensive Plan. 3. The project area abuts a well known and documented Distinctive Natural Area. There are no provisions to amend the Comprehensive Plan as it relates to this project. 4. The project to replace Oswego Canal on Childs Road will not directly affect the "functions and values" of Bryant Woods Park and Indian Springs except during actual construction of the project, about 2 months. Access to Bryant Woods park may at times be limited to eliminate potentially harmful conflicts with • construction activities. Oswego Lake waters will not be affected by the project as full erosion control measures will be implemented to ensure compliance with Lake Oswego water quality standards. 5. a. The project to replace Oswego Canal on Childs Road will not directly affect the "functions and values" of Bryant Woods Park and Indian Springs except during actual construction of the project, about 2 months. Oswego Lake will not be affected by the project as City of Lake Oswego water quality standards will be adhered to with full erosion control measures during contraction and stream embankment protection with riprap built into the project. b. The project to replace Oswego Canal bridge on Childs Road cannot avoid the "edge" of Bryant Woods Park and Indian Springs without realigning Childs Road and impacting a wooded wetland area south and abutting the existing road. c. The project does not encroach on Bryant Woods Park and Indian Springs or Oswego Lake. There will be no loss of area, functions or values except during actual construction of the project, about 2 months. d. "Open space preservation" is ensured for both Bryant Woods Park and Indian • Springs or Oswego Lake as the project does not encroach upon them. 11 pre-application conference.doc e. The "buffer and edge area" around Bryant Woods Park and Indian Springs will not be affected by the project to replace Oswego Canal bridge on Childs Road. • f. Childs Road abuts the "buffer area" of Bryant Woods Park and Indian Springs. A wider buffer area is not possible. 8. The project does not physically encroach upon a DNA site. Bryant Woods Park and Indian Springs are adjacent to the project but will be affected only indirectly. During construction, public access from Childs Road to Bryant Woods Park may be limited and at times prohibited to ensure public safety and potentially harmful interaction with construction activities. Oswego Lake is downstream from the project and is a designated 100 year flood zone. The project will add a small amount of fill material along the roadway in order to accommodate bridge and road widening. The affects to the flood plain area are negligible. 9. a. With the exception of construction noise, the existing "features, functions, and values" of Bryant Woods Park, Indian Springs and Oswego Lake will be unaffected by the project. Provisions will be made to muffle construction equipment to an extent possible. All disturbed areas of the construction zone will be revegetated with native trees and grasses. b. see (a) above. • c. Currently Childs Road does not have a system of water quality control to manage storm water runoff. The project to replace Oswego Canal bridge and widen Childs Road includes a water quality manhole to trap sediments and roadway pollutants before discharging into Oswego Canal. Contract specifications will be explicit that no contaminants will be allowed to enter or exit the construction site. Construction activities will be carefully monitored daily by qualified and certified ODOT inspection personnel. d. All disturbed areas will be revegetated with native trees and grasses as indicated on the enclosed landscape plans. Section 6: Open Space— 1, 2,3,4, 5, 7, 9 1. a. The project to replace Oswego Canal bridge on Childs Road will, by design, affect the "natural" area around the construction zone. The bridge area will be larger than existing and the approach road will be widened as well. This will require removal of trees and other vegetation. The contract plans call for replanting of all disturbed areas with native vegetation. Over time the area will return to a natural state. • 12 pre-application conference.doc b. Does not apply. The project area does not fall within the definition of a "scenic resource" when measured against vista type perspectives like views of Mt. Hood, Willamette River, Tualatin Valley and etc. The project area is confined to a narrow, heavily wooded corridor. c. see (a) above. d. The surrounding project area is subject to natural flooding. There are no areas of "geologic instability" (slides), or "high erosion potential" (long, steep, erodable slopes). Roadway fill slopes will extend slightly further into the flood zone but will not cause undue harm to the public. e. The project area is surrounded by a "natural area" of trees, wetlands and a stream. These areas are abruptly adjacent to the project. There are no "buffer" areas. The project will require the removal of trees and vegetation to provide construction space and various design elements (bridge area, roadway cross section, fill slopes). All disturbed areas will be revegetated with native trees and grasses to according to the attached landscape plan. f. The project area is surrounded by "wildlife habitat" consisting of trees, wetlands and a stream. These features are adjacent to the project. The project will require the removal of trees and vegetation to provide construction space and various • design elements (bridge area, roadway cross section, fill slopes). All disturbed areas will be revegetated with native trees and grasses according to the attached landscape plan. Over time the area will return to a near pre-existing state. g. Does not apply. The project is strictly transportation related. It neither eliminates nor produces open space or recreational land. 2. Does not apply. There are no provisions in this project to preserve "open space" by means of dedication, deed restrictions, covenants or other methods. Proposed right of way easements and takings are for the sole purpose of providing necessary roadway width, bridge width and fill slope extensions. 3. a. The project to replace Oswego Canal bridge on Childs Road will require removal of vegetation in the immediate project construction area. The area will be replanted with native trees and grasses as shown on the enclosed landscape plans. The existing "tree canopy" in the immediate project area will be temporarily affected, but over time will become reestablished. b. Does not apply. The project is serving a transportation related need and does not address "aesthetic and visual relief' issues relating to urban development 1111 (subdivisions, apartments, businesses etc.) 13 pre-application conference.doc J :; ��5 c. The project proposes to replace Oswego Canal bridge on Childs Road. The new structure will serve bike and pedestrian needs with added bicycle lanes and five • foot sidewalks. d. The project to replace Oswego Canal bridge on Childs Road will require removal of vegetation (natural area) in the immediate project construction zone. The area will be replanted with native trees and grasses as shown on the enclosed landscape plans. The existing "tree canopy" in the immediate project area will be temporarily affected, but, over time, will become reestablished. 4_ The project to replace Oswego Canal bridge on Childs Road will "protect" the area in and around the construction zone to the extent possible. Disturbed areas will be replanted with native trees and grasses. See enclosed landscape plans. 5. The project purpose and goals, on Childs Road, are strictly transportation (safety) related. The project indirectly affects an access to an "open space" (Bryant Woods Park) temporarily during construction, but mostly provides an increased measure of safety for vehicular, bicycle and pedestrian traffic along the new replacement bridge over Oswego Canal. There are no provisions and no needs to address a balancing between "protected natural areas and areas open to the public". 7. The project area is near two Distinctive Natural Areas (DNA's) — Bryant Woods • Park and Indian Springs. The subject areas will be indirectly impacted, (equipment noise), during construction. Equipment muffling techniques will be employed to decrease noise from excessively loud machinery such as pile drivers. 9. a. The subject bridge crosses over Oswego Canal an already protected "Open Space", privately owned by the Lake Oswego Corporation. An Open Space designation of eligibility does not apply in this case. b. The bridge project passes through the 100 year flood plain — as does the existing structure. Roadway fill slopes for increased roadway width and bridge area will slightly encroach upon the floodplain area. c. Project is outside Willamette River Greenway area. d. Project is outside Tualatin River Corridor. e. Fill slopes for required roadway width will encroach on the margins of a wetland area in the northeast quadrant of the project area. f. Project crosses over Oswego Canal. • 14 pre-application confercnce.do `' 6 g. The margins of a tree grove are within the project area. ih. Project area does not contain forested ridge lines. i. Project area does not contain viewpoints. j. Project area contains steep slopes only as that applies to Oswego Canal embankment slopes. k. Geology reports do not indicate "weak foundation soils" in the immediate project area. 1. Wooded wetlands (high ground-water) are present in the northwest, northeast and southwest quadrants of the project area. m. No areas of unstable soils are present in the project area. n. The subject project is in a narrow, heavily forested corridor, at low mean elevation. There are no scenic resources (vistas, panoramic views) within the limits of the project area. Section 7: Oswego Lake— 1, 9 10 1. Lake Oswego Corporation has been involved with the project from the early stages of development. Provisions in the contract plans will call for maximum protection of the canal and stream during actual construction and approved riprap material on the canal slopes as a permanent erosion control measure assuring downstream water quality. 9. Provisions in the contract plans will call for maximum protection of the canal and stream during actual construction and approved riprap material on the canal slopes as a permanent erosion control measure assuring downstream water quality. 10. Lake Oswego Corporation has been involved with the project from the early stages of development. Existing canal water flow will not be altered either during or after construction. Goal 6: Air, Water, Land Resource Quality Section 1: Air Resource Quality—4, 5, 7 • 15 pre-application conference.doc Uki 47 4. a. Project does not include bicycle and pedestrian "pathway" in order to limit • encroachment on adjacent wetlands and stream corridor. b. Replacement bridge is designed to accommodate bus (transit) loads. c. Roadway bike lanes and adjacent sidewalks are included to provide pedestrian and bicycle opportunities. d. Does not apply. See (c) above. e. Does not apply. See (c) above. f Does not apply. Project addresses specifically the need for a replacement bridge over Oswego Canal. An ongoing bicycle and pedestrian maintenance program is not included in the project. 5. The project does not directly impact existing local land use patterns. The sole purpose of the project is replacement of a narrow, structurally unsafe and functionally obsolete bridge. 7. According to local observations, the existing bridge, at times, accommodates only • one-way vehicular traffic. The replacement structure provides a roadway width sufficient for two-way passage at all times reducing congestion, delays and automobile pollution. Section 2: Water Resource Quality— 1,2, 3,5, 6, 9 1. The project includes a "water quality manhole" for the exclusive treatment of roadway surface, stormwater runoff. There will be no impacts from this project to the natural surface water drainage systems of the area. 2. Due to right of way constrictions and the need to limit encroachment onto sensitive areas adjacent to the project, a "water quality manhole" was selected as the method of treating surface stormwater runoff from the roadway surface. 3. a. The project includes provisions for erosion control measures and replanting of native trees disturbed by construction activities in order to protect water quality and restore the stream corridor canopy of Oswego Canal. b. Not an issue for this project. Stormwater runoff from the roadway surface, which currently flows off the road and directly onto the adjacent land and canal water, • before being released into Oswego Canal. 16 pre-application conference.ci c �� v4J • c. Not an issue. The "community" will not be involved with this project regarding engineering design of the management of project area stormwater runoff. 5. a. The project will include in the contract plans all federal, state, and local water quality and erosion control measures that comply with all applicable agency standards. b. The project construction will take place during low rainfall periods in the summer months. The contractor will be directed in the contract provisions to apply erosion control measures (straw bales, geotechtile sheeting, straw matting, silt fences and etc.) for protection of all water courses and wetlands. 6. The project includes treatment of stormwater runoff from the roadway surface with a water quality manhole. An intergovernmental agreement will not be necessary. 9. The project will require removal of vegetation in the immediate area of construction. This will temporarily disrupt the natural ability of the area to control surface runoff. Artificial erosion control with straw bales, geotechtile sheeting, straw matting, silt fences and etc. will be employed to ensure maximum • protection of the area water courses. Section 4: Sound Quality— 1, 5, 6, 7 1. This is a bridge replacement project. Construction noise is unavoidable. A pile driver will be employed (approximately 5 days) to facilitate bridge construction. The contractor will be instructed to use noise reduction techniques and equipment muffling to reduce pile driving noise. Other than normal construction noises, the project will not directly change the ambient sounds of the area. 5. The purpose of this project is to provide a safer travelling environment for cars, bikes and pedestrians on Childs Road. The road is not considered a "major" transportation facility, industrial development or active recreation area. There are no provisions in the project to build a "buffer" in order to shield the surrounding area from road generated noises other than replanting disturbed areas with native trees and grasses. 6. This is a road widening and bridge replacement project. There are noises inherent to construction activities for this type of project from road graders, backhoes, dump trucks and pile drivers. A pile driver will produce the largest amount of noise. A muffling device will be employed to reduce the pile driver noise to an • extent possible. In addition, construction will take place during the summer months, the highest period of vegetative cover—a natural sound barrier. 17 pre-application conference.doc 0 � j 7. see (6) above. 1111 Goal 7: Natural Disasters and Hazards Section 1: Flood Hazards— 1, 2,3, 4, 6, 8, 9 1. The new structures depth and the uniform slopes of the riprap will increase the possible wetted perimeter of the existing structure's opening, decreasing the restriction of floodwaters at this construction site. 2. a. The native plants will be placed at the upper elevation of the flood plain and will not restrict water flow as much as the existing vegetation does now. b. There will be no change in flow due to this construction. c. Additional impervious surfacing will tend to have less erosion at the approaches that now exists. 3. a. No construction floodwater restrictions exceed existing obstructions. b. Riprap will beplaced at stream/canal side to reduce erosion and protect the • P P abutments. c. The gradient of the canal has not, nor will be altered. d. The wildlife habitat in Bryant Park will not be affected. e. The existing ponding in the wetlands will continue without interruption and the canal gradient will not change. 4. The new structure has fewer floodwater constrictions than the existing bridge. Native plants will be placed as directed by landscape architects to enhance soil stabilization and add to aesthetics of the area. 6. The canal/stream flow will not be restricted by hanging limbs and native trees will not be placed below normal high water marks. 8. The amount of filling (cubic meters) into the flood plain is less than the allowable for single family residence. Also, this is several times lower than the allowable for a project of this size and length. • 18 pre-application conference.doc r '.i Jc • 9. The existing canal, gradient, location and available will not be altered. The canal capacity will be enhanced. Section 2: Earthquake Hazards - 4 4. The seismic design for Oswego Canal replacement bridge is in compliance with the AASHTO Division 1 A seismic design, "Standard Specifications for Highway Bridges". Section 3: Landslide, Erosion, Unstable Soils — 1, 2,3,4, 6, 9, 10 1. The project area is in a relatively flat, heavily forested, low elevation area with little or no potential for soil erosion or landslide "hazard". There are no unstable soils in the sense they are susceptible to sudden or gradual downslope movement. But, the area is considered to have a potential for "weak foundation soils" although a bridge foundation report — attached - did not indicated such. During construction, all exposed areas subject to stormwater runoff erosion will be protected with various erosion protection materials. Upon project completion, disturbed areas will be replanted with vegetation to minimize erosion potential. Stream embankments will be protected with riprap material. 2. The project to replace Childs Road Bridge is in an area considered to have a potential for weak foundation soils according to Lake Oswego survey maps. Soils tests have been performed in the area of the new bridge and roadway. The "degree of hazard" is low. Nevertheless, as with any road construction project, this project also takes into consideration the condition of the soil and future loads to eliminate the potential of settlement, differential settlement or soil creep. 3. a. Project has been reviewed by City of Lake Oswego and Oregon Department of Transportation geotechnical and bridge foundation engineers to meet standards associated with erosion, landslides, and unstable soils. b. Areas disturbed by construction activities will be restored with native plantings of trees and grasses. Canal slopes will be protected from erosion with riprap material. c. There are no "severe" landslide or erosion hazards in the project area. Finished • canal slopes will be protected with riprap material to eliminate all erosion possibilities. 19 pre-application conference.doc J � �1 d. The project area passes over Oswego Canal and is surrounded by a heavily • forested canopy. As mentioned, all disturbed areas will be replanted with native vegetation and canal slopes will be protected with riprap material. e. The project will employ full erosion control measures both during and after construction as shown on the construction and landscape plans. 4. The contractor for Oswego Canal bridge replacement will be instructed in the contract provisions to minimize the removal of vegetation to the extent possible and to employ any means available (erosion matting, silt fences, plastic cover, straw bales) to prevent erosion of on-site materials. 6. The canal slopes may be considered an area with a potential for high erosion hazard. The slopes will be protected with embankment riprap to eliminate any erosion potential. 9. Oswego Canal bridge on Childs Road may be considered a "public facility". The area of the bridge is not considered a hazard area with regard to potentially dangerous movement of rock and soils (landslides, etc.). 10. The project has been reviewed at the local, state and federal level. 8: Parks and Recreation —7 12 • Goal a , 7. Project includes bikelanes (shared with vehicle lanes) and 5 foot wide sidewalks. 12. Bryant Woods Park (a designated DNA) is located in the northwest quadrant of the project area. The only impact to the park is from a guardrail and sidewalk "return" that slightly encroaches on the park entrance. Otherwise, the park is "protected" in its entirety. Goal 11: Public Facilities and Services Section 1: Public Safety - 2 2. a. There are no fire hydrants located in the vicinity of this project. b. The project includes provisions for heavy weight trucks, including fire trucks. c. There are no buildings in the project area. d. Exterior lighting is not included in this project. Landscaping features will not affect emergency response. • 20 pre-application conference.doc - r- U :. J Section 5: Administrative and Gov. Service, Engy, Comm., & Schools - 4 4. Stormwater runoff will be conveyed to a storm water treatment facility (manhole) alongside the existing road. No storm water runoff will be directed to the existing sanitary sewer system. Goal 12: Transportation Section 1: Major Streets System — 1, 2, 3, 4 1. Oswego Canal at Childs Road bridge replacement project is designed to accommodate peak hour traffic volumes. The bridge width will promote slow, safe speeds through the neighborhood area. 2. Two approach roads meet Childs Rd. west of the proposed structure— Bryant Park access road on the north side and Canal Road on the south side. Both are controlled with stop signs. 3. a. There are no freeways on this project. b. There are no major arterials on this project. c. There are no minor arterials on this project. • d. Childs Road is a major collector and the traffic lanes are designed to meet city standards. 4. a. This project proposes to replace a structurally deficient bridge. Traffic increases due specifically to the bridge replacement are not anticipated. b. This is a bridge replacement project. The land use will remain as before. c. 5 foot wide sidewalks and 4 foot wide bike lanes (shared with vehicle lanes) on both sides of the structure are included in the bridge design. d. This section does not apply. e. This section does not apply. Section 2: Intergovernmental Coordination— 1,2 1. a. The proposed project to replace Oswego canal bridge is consistent with the Lake Oswego Comprehensive Plan. b. Childs Rd. has been identified as a major collector in the City of Lake Oswego. i 21 pre-application conference.doc tivJ .3 A c. The project proposes to replace Oswego Canal bridge on Childs Road. The existing bridge is a safety problem as it is narrow, structurally deficient and needs • replacement. d. This project is funded with Federal, State and County dollars. e. This project provides transportation facilities for pedestrian, bicycle and vehicular traffic. 2. a. The project to replace Oswego Canal bridge on Childs Road takes into consideration the surrounding land uses (wetlands, park lands). The bridge and approach road cross-sections were kept to a minimum width to reduce encroachment of roadway side slopes on to the adjacent areas. The existing bridge is narrow and structurally deficient. A replacement bridge provides a stronger, wider facility enhancing transportation safety. b. The project development process has been coordinated with the City of Lake Oswego, Clackamas County, Federal Highways and Oregon Department of Transportation. c. The project to replace Canal Bridge on Childs Road does not adversely impact the existing transportation system, except during construction. Detours will be • provided to reduce inconvenience to the public. The project development process has included public involvement by means of public meetings and individual conferences on several occasions. Section 4: Land Use and Transportation Relationships— 1, 2, 9 1. a. The City of Lake Oswego has reviewed the project plans to date. The road improvements were designed so as to encroach on the adjacent areas as little as possible. The park areas and adjacent wetlands will be preserved. b. City of Lake Oswego approved storm water treatment facilities are included in the project (see project plans). Two water quality manholes will be installed to deal with roadway pollutants and sediments from the project and surrounding area. c. This is a bridge replacement project that will have no affect on the adjacent neighborhood traffic patterns. The aesthetic value of the immediate project area is attributed to the forest canopy. A small area of trees will need to be removed to accommodate construction of the wider replacement bridge and roadway. Project plans include replacement of vegetation with native trees and grasses. • 22 pre-application conference.doc ii � 54 d. The project impact areas are shown on the plans. A certain amount of trees (ten) • and shrubs will need to be removed for construction activities and for the "final" design. See attached landscape plans. 2. The purpose of this project is to replace a functionally obsolete and structurally deficient bridge. This is a safety improvement project paid for with federal, state, and county dollars. "Negative impacts" of this project may include removal of vegetation in the project vicinity; and, disruption of the normal traffic patterns on Childs Road. A landscape plan included in this packet shows the mitigation areas for vegetation disturbances and a detour route that accommodates traffic normally traversing Childs Road. 9. a. There are no driveways in the vicinity of this project. b. This project provides for two 5 ft. sidewalks, two 4 ft. bicycle lanes, and 2 10 ft. travel lanes. Zoning LOC 408.06 • The Oswego Canal (Childs Road) Bridge project is located in a R-10 zoning area. Zoning District Standards: "Conditional Use" for a Major Public Facility (48.06.200) This is a bridge replacement project on Childs Road. The subject road is classified a "major collector" within the city limits of Lake Oswego. The project proposes to replace the existing 20 feet wide structure steel structure with a 38 feet wide concrete structure. There are no other planned uses. LOC 48.06.205 Maximum Density, Density Bonus This is a road transportation and safety improvement project built almost entirely within the existing right of way of Childs Road. There are no buildings being constructed in conjunction with the project. Density requirements should not apply in this case. LOC 48.17.310 Resource Protection Oswego Canal is classified as a "stream" and as such falls within areas designated as Resource Protection (RP) and Resource Conservation (RC) zones (see attached drawing showing edge of corridor and stream buffer boundary lines). The project to replace • Oswego Canal bridge on Childs Road unavoidably impacts these resources as the project 23 pre-application conference.doc proposes to increase the existing "roadway" — curb to curb - from 20 feet to 28 feet — plus two five foot sidewalks for total increase l of 8 feet (9 feet both sides) in the area of • the bridge. The increase in roadway width is necessary in order to safely accommodate motorized vehicles, bicycles and pedestrians. The impacts are minimized by increasing the incline of the roadway sideslopes. In addition, the stream bed to bridge deck height is designed higher that the existing bridge providing an improved wildlife passage corridor. The natural stream bed will not be disturbed. Care will be taken in the form of contract provisions that will prevent the bridge contractor from entering the stream environment unless explicitly needed as part of the bridge construction process. Erosion control measures meeting local and "Best Management Practices" standards will be fully implemented and strictly enforced. All disturbed areas will be replanted with native plantings as found in the City of Lake Oswego Restoration Plant List. Work From The Bank: Project scope: The project involves removal of the existing 20 ft. x 60 ft. steel structure and replacing it with a 38 ft. x 62 ft. concrete structure. The new structure provides two 14 foot shared bicycle and vehicle lanes and two 5 foot sidewalks. The surrounding area is characterized by a forested canopy of alder, maple and ash trees intermixed with non- native blackberries and low growing shrubs and vines. There are about ten trees with diameters of 5 inches or greater in the project impact area that will need to be removed and mitigated for(see attached landscape mitigation plan). The stream (canal) has been subjected to high water flows in the recent past. The stream • slopes are steep and in some areas nearly vertical with riprap along some sections. The construction plan calls for embankment riprap under the bridge. Riprap material is used as a means of erosion control and slope protection especially in the areas around the bridge abutments. The riprap material will be confined to the slope and held in place with steel sheet piling installed at the outside edge of the natural stream channel. The sheet pile will be installed first and the riprap material will be carefully installed behind it. No riprap material will be placed in the stream channel. This work will be performed at the top edge of the stream corridor and from the existing roadbed. The contractor will have to utilize construction equipment capable of extending the necessary construction machinery over the stream embankment from on top of the canal slope. This type of equipment is regularly available as the distance from the top of bank to the stream channel is only 7 feet or less. Construction equipment of this sort is capable of extending out to 20 feet or more. Tree and vegetation removal in the immediate area of the new bridge and the roadway sideslopes will be undertaken in accordance with ODOT specifications for Clearing and Grubbing (Section 00320.00) Sub-Section 00302.03 contains provisions that detail the restrictions on clearing and in part instruct the contractor to avoid all vegetation in the work area designated to remain and to confine all construction activities to the immediate work areas only. A landscape plan is attached that shows the area of vegetative clearing and planting mitigation. 24 pre-application conference.doc lir uJ r r The building materials used for the new bridge are all pre-cast concrete. Utilizing pre- • cast materials eliminates the potential of concrete reaching the stream and simplifies the construction process. Erosion control measures have been called out in the Contract Specifications and in the Erosion Control Plans. The project will be built during the summer months, a time of normally low rainfall intensity and duration. Every precaution will be taken to protect the canal stream from sediment runoff. The erosion and sediment control plan as shown in the construction plans has been developed for anticipated site conditions. The project contractor must submit to ODOT construction engineers detailed plans that show the specific erosion control measures for each stage of the project. LOC 48.17.210 RC District Development Standards (1) 1. Streets and Driveways. ". . . transportation facilities should not be placed through the RC Protection Area . . . unless there is no other practicable method of access." This is a bridge replacement project on Childs Road — designated a major collector. The existing bridge will be removed and replaced in essentially the same location. The impacts to the surrounding areas are due to a wider replacement bridge and wider roadway approaches. The replacement bridge is the minimum width necessary to provide transportation services for vehicles, bicycles and pedestrians. Accesses are not applicable as the project only involves the area immediately surrounding the bridge. There will be a small amount • of impact to the Protection Area due to a wider structure and roadway width. The losses will be mitigated as shown in the attached landscaping plan. LOC 48.20.530 Vision Clearance This project proposes to replace the existing narrow, 20 foot wide bridge over Oswego Canal on Childs Road with a new concrete structure approximately 38 feet in width. Canal Road and Bryant Woods Park entrance are located immediately west of the bridge. The current, narrow bridge, limits the amount of visibility ("vision window") for vehicles leaving Canal Road and Bryant Woods Park to between 67-97 feet as shown on the diagram below. The new bridge will increase the vision window to between 187 feet and to over 300 feet—assumed a vehicle stopped 10 feet from the edge of travel lane and the vehicle driver looks around the inside of the bridge guardrail. For vehicles leaving Bryant Woods Park and turning left (east) there is an' adequate vision window. For vehicles leaving Canal Road and turning left (west) on to Childs Road, a 187 feet vision window (sight distance) does not meet 1965 ASSHTO standards — standard calls for approximately 500 feet sight distance; assumed vehicle stopped 10 feet behind travel lane; "design"speed of 37 MPH. • 25 pre-application conference.doc � '. r.t vw V� t ,! VISION CLEARANCEIII , , 1 / i Edge or Exist:4 Rood s ,.1` 1 New O$b&Wdk 1 \� Now Bridge Ron �—� • " " New CUD 6 Wdk ____ f a ...+"________97 ft. t. New Vision Window^1.•...................... cur �� Existing Vision 'Windo�✓ t8'1 ft.•••..... Edge or£xtaling Rood Exlaftng Brld4e —— CNlda Rd. II 610.t T tt� -- = —_ ---- , Y - .I New Curti elk —� e-1 .L i — Bridge ! \ S / c \1\ New Otkb Q Wdk ` \ it- Edlre Existing Road no soda �— 0 1 The only alternatives that would increase the vision window (sight distance) are to either widen the bridge on the south side or move Canal Road further west. Canal Road can not be relocated to the west as this would encroach on a "sensitive" wetland area. The bridge cannot be widened for the same reason. Canal Road is a very low volume residential street with four private homes. The S existing sight distance to Childs Road from Canal Road is poor. The new bridge will provide for a sizeable increase in sight distance and substantially improve the safety of the intersection. LOC 48.22.585 Standards for Major Public Facilities (1)— (7) 1. Utilities, Streets or Other Necessary Improvements to the Public Facilities . . . This is a bridge replacement project on Childs Road at Oswego Canal crossing. The "facility" is the new bridge. The agency "constructing the use" is Clackamas County. The facility will be turned over to the City of Lake-Oswego upon completion of the project and city approval. Although the city will ultimately "own" the facility, Oregon Department of Transportation (O.D.O.T.), Federal Highway Administration (FHWA), Clackamas County and City of Lake Oswego are all contributing to the cost of construction and design by varying amounts according to signed and approved intergovernmental agreements. 2. Public Access. This section refers to a facility that would, by necessity, create an IIIaccess to a public road. Since this is a bridge replacement project on a public road, 26 pre-application conference.doc n . the issue of access does not apply in this case. No capacity increases are expected as • a result of this project. For that reason, no analysis was made of the projected increases in average daily trips. 3. Lot Area. This section refers to "lot" areas. Since this is a bridge replacement project on a public road, the issue of lot areas does not apply in this case. 4. Height Limitations. This section refers to building height. Since this is a bridge replacement project on a public road, the issue of building height does not apply in this case. 5. Equipment Noise. This section refers to noise from equipment which is associated with the "facility". Since this is a bridge replacement project on a public road, the issue of equipment noise does not apply in this case. 6. Lighting. This section refers to glare from exterior lighting fixtures which is associated with the "facility". Lighting fixtures are not included in this project to replace the Oswego Canal Bridge on Childs Road. The issue of glare from outdoor lighting is not an issue in this case. 7. Levels of Operation. This section refers to conflicting activities associated with the uses of the facility and the surrounding area. Since this is a bridge replacement project • on a public road, the issue of operation levels does not apply in this case. The use of the road will be enhanced as a new and wider bridge will increase safety and emergency vehicle access. Development Code This section calls for addressing the codes as found in Article 7 "Off-street Parking, Loading and Bicycle Access; Article 12 "Drainage Standards for Minor Developments"; Article16 "Hillside Protection Standard"; and Article 19 "On-site Circulation— Driveways and Fire Access Roads". Since this project is being processed as a Major Development, these articles are addressed throughout this document. Development Standards Building Design • 2.020 Standards for Approval (1) - (6) 27 pre-application conference.doc 1. This section, a-i, deals exclusively with buildings. Since this is a bridge replacement project on a public road, the issues of building design, building location and etc. as • they apply to the preservation of existing buildings, streets, paths, bridges and other elements do not apply in this case. 2. This section, a-c, deals exclusively with buildings. Since this is a bridge replacement project, the issues of building design and building location as they apply to the preservation of existing land forms, trees, shrubs, and other natural vegetation do not apply in this case. 3. This section deals exclusively with buildings. Since this is a bridge replacement project, the issues of building design as they apply to minimizing personal security risks of users and minimizing the opportunities for vandalism and theft do not apply in this case. 4. This section, a-c, deals exclusively with buildings. Since this is a bridge replacement project, the issues of building design and construction as they apply to noise impacts on interior occupied spaces and adjacent properties do not apply in this case. 5. This section deals exclusively with buildings. Since this is a bridge replacement project, the issues of building design and construction as they apply to roof angles, flashings and gutters do not apply in this case. v withbuildings. Since this is a bridge replacement 6. This section deals exclusively gP project, the issues of building features like arcades, roofs, alcoves, porticoes and awnings as they apply to protecting pedestrians from the elements do not apply in this case. Street Lights 5.020 Standards for Approval (1)—(3) 1. This project proposes to replace the existing narrow, 20 foot wide bridge over Oswego Canal on Childs Road with a new concrete structure approximately 38 feet in width. There are no provisions to include street_lighting as part of the project. Therefore, the "Standards for Approval" as they relate to street lighting in this section, (1) Residential Streets 1 a & lb, does not apply in this case. 2. This project proposes to replace the existing narrow, 20 foot wide bridge over Oswego Canal on Childs Road with a new concrete structure approximately 38 feet in width. There are no provisions to include street lighting as part of the project. Therefore, the "Standards for Approval" as they relate to street lighting in this section, (2) Arterial and Collector Streets, does not apply in this case. • 28 pre-application conference.doc 3. This project proposes to replace the existing narrow, 20 foot wide bridge over • Oswego Canal on Childs Road with a new concrete structure approximately 38 feet in width. There are no provisions to include street lighting as part of the project. Therefore, the "Standards for Approval" as they relate to street lighting in this section, (3) Public Pathways and Accessways, does not apply in this case. Transit System 6.020 Standards for Approval (1) 1. The standards for this section apply to all new subdivisions, planned developments, residential developments of four or more units or more and etc. Since this is a bridge replacement project, the issues of transit oriented features, transit facilities, level of existing and projected transit facilities, proximity of other ridership attractors, size and trip generation potential, expected transit ridership, nearby transit oriented features and adjacent paths leading to the nearest transit street, need for transit stops pullouts and or other transit facilities, do not apply in this case. It should be noted that the new structure provides for a travel way that will safely accommodate bus passage across the bridge. The exisitng bridge is load limited and can not handle the weight load of a Tri-Met bus. • Park and Open Space 8.020 Standards for Approval (1), (2) 1. The standards for this section apply to residential, office campus, commercial and industrial development. This is a bridge replacement project and does not fall within any of these "development" categories. Therefore the requirements to set aside a percentage of development area for open space or park land do not apply in this case. The project proposes to widen the exisitng Childs Road roadway and is within the boundaries of both a RP and RC area, specifically the Oswego Canal stream corridor and Bryant Woods Park. The widened bridge, roadway and sideslopes slightly encroach on these areas. Approximately ten trees will have to be removed and replaced. A landscape plan is attached that shows the mitigation scheme for the small impacts resulting from this project. 2. This section addresses issues associated with open space and park land in commercial, industrial, and office campus areas. This is a bridge replacement project Son a public road and does not fall within any of these area designations. The project 29 pre-application conference.doc [. rl : U1 will slightly encroach on the Oswego Canal stream corridor and Bryant Woods Park. These impacts are due to a wider bridge, roadway and sideslopes. A concerted effort • was made to minimize the width of the new structure and roadway approaches. The final product was the result of several years of public input. A landscape plan is attached that shows the mitigation scheme for the small impacts resulting from this project. Landscaping, Screening and Buffering 9.020 Standards for Approval (4), (6) 4. The project proposes to replace the existing bridge on Childs Road at the Oswego Canal overcrossing with an 18 foot wider structure. The project also includes sidewalk at the bridge approaches and guardrail at the west ends. There are no provisions made to include "street trees". All trees planted for the project are to mitigate for the trees lost due to the project impacts, i.e., wider bridge and roadway sideslopes. A landscape plan is attached that details the tree and plant mitigation effort. 6. This is a bridge replacement project on Canal Road at the Oswego Canal crossing. Project impacts include encroachment of the roadway sideslopes onto the adjacent right of way. Approximately ten trees will have to be removed and then replaced at specified • mitigation sites (see attached Landscape Plan). There are no storage areas or parking lots as part of this project. No increase in noise is expected due specifically to this project. There are no outdoor lights included in the project. The proposed landscaping plan has been reviewed and approved by Deborah Lev city of Lake Oswego natural resource coordinator. 9.025 Standards for Installation and Construction (1)—(10) 1. Plant Material and size. A plant list and landscape plan is attached. All materials to be planted are from the City of Lake Oswego planting list. _ 2. Plant Installation. All plant material is to be installed according to ODOT Standard Specifications Section 01040—Planting with the following revisions: 01040.63 Plant Establishment — Water and maintain the planted shrubs until completion of the contract. The contractor will be responsible for replacing damaged, unhealthy, or dead shrubs. • 30 pre-application conference.doc 0104.63 Plant Establishment — The plant establishment period shall begin on acceptance of • the original planting and end (3) calendar years later. 3. Irrigation system. No irrigation system is planned as the species of plants installed will only require periodic watering until they have become established. The establishment period, as stated in the contract provisions, is 3 years. 4. Exisitng vegetation in the landscape plan. All vegetation in the construction zone will be removed and replaced according to the attached landscape plan. The contractor will be using ODOT Specifications 01040 — Planting as the instrument to direct the landscape work activities. 5. Rare and endangeredplant species. A biological assessment, performed byODOT g P g environmental personnel, has determined there are no rare or endangered species in the project area. 6. Topsoil. The project contractor is directed to apply the ODOT Standards Specifications Section 01010 — Topsoil. A special provision (section 01040.10) is included to "replace all removed topsoil during construction with topsoil". 7. This project does not include either a parking lot or planting strip. The landscape design was developed utilizing the City of Lake Oswego standard planting list. See attached • landscape plan. 8. The above landscape plan excludes trees specifically prohibited as listed in LOC 9.020 (8). See also the attached landscape plan for further details. 9. This project does not include a planting strip adjacent to the roadway. There are no "street trees" or"raised planters" included in the landscape plan. See attached landscape plan. 10. The project purpose is to replace the existing Childs Road bridge at the Oswego Canal overcrossing. The new bridge and approach roadway will be wider to provide for vehicles bicycles and pedestrians. Approximately ten trees will be removed due to widening. The loss will be mitigated with tree plantings as shown in the attached landscape plan. The new trees are not planted to act as a means of"screening" or "buffering". This section does not apply. Drainage for Major Development • 31 pre-application conference.doc � 1/4) Ca This project proposes to replace the existing Childs Road bridge at the Oswego Canal overcrossing. The new bridge and approach pavement (including sidewalk) will be wider • by approximately 18 feet. Russ Chevrette of the City of Lake Oswego indicates that this project may meet it's requirements for water quality for new impervious surface by providing an oil separating manhole. This is allowed under City code because the project adds only 3388 sq. ft of new impervious surface and because it is difficult to treat such small areas less than 6060 sq. ft. The project will provide a water quality (oil separating) manhole which is constructed to Unified Sewerage Agency (USA) manual standards. See attached project plans. The water quality manhole will collect water from three areas: • 10,010 sq. ft. of road surface will drain to a new inlet installed on the east end of the bridge. • 4,069 sq. ft. will drain from the road east of the bridge to the existing roadside ditch, then to the new water quality manhole. • 155,511 sq. ft. of wetlands in Bryant Woods park will drain to the existing roadside ditch and then to the new water quality manhole. Most of the water from the wetlands will have already been filtered through the wetlands/ground. The water quality manhole will be designed with a sump of 71 cu. ft.. This is conservative since the basic requirement would be 43 curve cu. ft. of sump volume. The calculations and manhole diagram are attached. In addition to the water quality manhole, the project will be designed to include erosion control meeting USA and Lake Oswego standards, and will include restoration of vegetation disturbed during construction and replacement of any trees removed in accordance with the lake Oswego land use code. The project design includes several mitigation actions for fish concerns. These included: 1. No riprap at base of the canal; 2. Limiting riprap along sides of canal to the area immediately under the bridge and 1 m out from it as well as the area under the outfall on the SE bridge corner; 3. Restoration of the riparian zone (similar to what is requited by the City); 4. Planting a mitigation area in River Run Park to improve the riparian zone along the Tualatin River within 300 ft of the water line; 5. Installing a manhole to improve water quality/reduce sedimentation at the outfall on the SE of the bridge. This outfall drains 57 acres of residential area in Lake Oswego (information provided by Jerry Baker of City of Lake Oswego (May, 1999). Therefore, this manhole is designed primarily for sedimentation and a standard baffled manhole type is used (OK'd by Jerry Baker of Lake Oswego). The sump is designed to USA standards of 0.245 cu. m /ha. Because there is no flow splitter for this flow, Jerry Baker of Lake 32 pre-application conference.doc 0 G4 Oswego agreed in September, 1999 that City maintenance crews would vactor the manhole 2-3 times/year. 11.020 Standards For Approval (1) —(5) 1. A water quality manhole will be installed in the northwest quadrant of the bridge area outside the existing Childs Road right of way in property owned by the Oswego Lake Corporation.. See attached construction plan. An easement to access the manhole for maintenance purposes will be provided. A water quality manhole at the southeast quadrant of the bridge will be located within the Childs Road right of way. See attached construction plans. Maintenance functions can be performed be city forces without disturbing sensitive areas. 2. Storm Water Runoff Quality. Russ Chevrette of the City of Lake Oswego indicates that this project may meet it's requirements for water quality for new impervious surface by providing an oil separating manhole. This is allowed under City code because the project adds only 3388 sq. ft of new impervious surface and because it is difficult to treat such small areas less than 6060 sq. ft. The project will provide a water quality (oil separating) manhole which is constructed to Unified Sewerage Agency manual standards. • The water quality manhole will be constructed with a sump of 71 cu. ft.. This is conservative since the basic requirement would be 43 curve cu. ft. of sump volume. The calculations and manhole diagram are attached. 3. Drainage Pattern Alteration. This project proposes to widen Childs Road to a maximum 38 feet (from back of sidewalk to back of sidewalk). The maximum width is gradually attained as the raodway is widened to match the proposed design. No existing "drainage patterns" in the immediate project area will be adversely affected. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report). The outfalls are located on the sides of Oswego Canal. Riprap will be installed in the immediate area of the outfalls to provide erosion control. 4. Storm Water Detention. The impervious surface created by the project is 3388 sq. ft. This new surface is created by the new bridge which is wider that the old bridge and by the roadway tapers matching the bridge width to the existing road. Surface storm water management is by means of a series of inlets, ditches, culverts and manholes. The manholes are designed to manage the water quality of the surface runoff. No detention facilities for the purpose of managing runoff rates are included in this project. 5. Required Storm Water Management Measures. The project, Oswego Canal (Childs Rd • Bridge# 06429), is located within the Tualatin River Watershed. This project is therefore required to address water quality concerns both for compliance with the Tualatin River 33 pre-application conference.doc ,�•. TMDL and with endangered species concerns under National Marine Fisheries Service due to the potential presence of endangered fish within the canal. The attached • construction plan shows how the project will manage storm water runoff by a series of newly installed inlets, manholes and culverts and exisitng ditches. The project will provide a water quality manhole (oil separating) constructed to USA standards. In addition to the water quality manhole, the project will be designed to include erosion control meeting USA and Lake Oswego standards, and will include restoration of vegetation disturbed during construction and replacement of any trees removed in accordance with the Lake Oswego land use code. (See attached landscape plan) 11.025 Standards for Construction (1) —(9) 1. Landscaping and Topography. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. No detention or retention facilities are included in the project. Therefore, the use of natural topography and existing vegetation for detention or retention areas does not apply. Disturbed vegetation and trees will be replaced and planted as shown on the attached landscape plans. 2. Outlet Structures. The outlet structures for this project consist of culvert pipe which 4111 extend out over the canal slope. Riprap protection to control embankment and channel erosion is included in the project as shown on the attached project construction plans. 3. Sideslopes. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. No detention or retention basin or ponds are included in the project. The issue of retention and detention sideslopes, therefore, does not apply in this case. 4. Emergency Overflow Bypass. No detention or retention basin or ponds are included in the project. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Emergency overflow bypass systems are designed to convey the"overflow"storm water of constructed detention or retention ponds. Since there are no detention or retention ponds included in the project, this issue does not apply in this case. _ Hydraulic calculations are included in the attached Water Quality Report. 5. Secondary Uses. No detention or retention basin or ponds are included in the project. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. The issue of using detention or retention areas for other uses, therefore, does not apply in this case. S 34 pre-application conference.doc 0 „ G E; 6. Release Rate Outlet. No detention or retention basin or ponds are included in the project. • The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. There are no "outlet openings" other than storm water pipe from the manholes. The storm pipes outfall into the Oswego Canal. "Outlet" sizing; storm water detention; prevention of siltation or clogging; and outlet size adjustments, therefore, do not apply in this case. 7. Required Detention Volume for Developments. No detention or retention basin or ponds are included in the project. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report). The outfalls are located on the sides of Oswego Canal. Riprap will be installed in the immediate area of the outfalls to provide erosion control, (see attached project construction plans for additional details). 8. Detention Basins. No detention basins are included in the project. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report and attached project construction plans for additional details). • 9. Retention Ponds. No retentionponds are included in the project. The project will manage g storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report and project construction plans). 11.035 Standards for Maintenance (1) 1. Maintenance. No detention basins or retention ponds are included in the project. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water Quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report and project construction plans). 11.035 Procedures (1) — (3) 4111 35 pre-application conference.doc l v i) 7 1. Preparation of Drainage Plans. A drainage plan has been prepared for this project. It is included in the attached "Water Quality Report". The plan was prepared and stamped by a registered professional engineer from ODOT . City Engineer approval of the plan is pending. 2. Before and After Site Conditions. The new impervious surface created by the project is only 3388 sq.ft. This new surface is created by the new bridge which is wider than the old bridge and by the roadway tapers matching the bridge width to the existing road. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas (see attached Water Quality Report and project construction plans). Information about clearing, grading, vegetation preservation, drainage improvements and maintenance of storm drainage for the project can be obtained in the attached project Plans and Specifications; Water Quality Report; and, Landscape Design plans. An impact analysis is not included in this packet as this is a small road improvement project that will not in any way adversely impact downstream drainage facilities. As noted above, the storm water runoff from the addition of impervious surface will be managed according to the regulations as set forth in the United Sewerage Agency and City of Lake Oswego policies. • The project drainage facilities have been designed by an ODOT registered professional engineer and the calculations are in the Water Quality Report included in this packet. A hydraulics report for the Oswego Canal has been prepared as is standard ODOT procedure for bridge construction projects. The report is available upon request. 3. Storm Water Detention Feasibility. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas. The new impervious surface created by the project is only 3,388 sq. ft. This new surface is created by the new bridge which is wider that the old bridge and by the tapers matching the bridge width to the existing road. Culvert pipes greater in size than existing pipes and also riprap embankment protection at the culvert outfalls are included in this project. (see attached Water Quality Report and project construction plans). • 36 pre-application conference.d .� 'v Utt 11.040 Miscellaneous Information (1)—(3) • 1. Joint Development. There are noplans to create a drainage facilityfor this P jointg project. The new impervious surface created by the project is only 3,388 sq. ft. This new surface is created by the new bridge which is wider that the old bridge and by the tapers matching the bridge width to the existing road. The project will manage storm water runoff by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas. 2. Meeting Detention Requirements. There are no "detention" facilities planned for this project. Storm water management is met by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other drainage areas. The storm water management plan was developed and designed by a licensed professional engineer from ODOT. See also the construction plans and attached Water Quality Report. 3. Examples. Acceptable storm water management is included in the project design. Storm water management is met by a series of newly installed inlets, manholes and culverts, and exisitng ditches. Two water quality manholes built to USA standards will be installed to manage storm water runoff from the roadway surface and other • drainage areas. The storm water management plan was developed and designed by a licensed professional engineer from ODOT. See also the construction plans and attached Water Quality Report. Weak Foundation Soils 13.035 Procedures (1)—(7) 1. Confirmation of Weak Foundation Soils. The project proposes to replace the existing Childs Road bridge over Oswego Canal with a new structure. A geology report was prepared for the project site in 1995 by an ODOT geologist and is included in the application packet. The report describes where test-samples were taken; the type of soils encountered and a recommendation for slope protection on the canal embankment. This report was used by ODOT bridge engineers in determining the most appropriate structural design for cars and heavy truck loads. In this design, the bridge will be supported by a combination of steel pipe piles and reinforced concrete. The bridge design is included in the land use packet. 2. A geology report was prepared for the project in 1995 by an ODOT geologist. Two • test borings were drilled at the west and east ends of the existing bridge. The report 37 pre-application conference.doc 0 • (J� shows the soils conditions up to a depth of 36.5 feet. This geology report was used by ODOT bridge engineers to design a concrete structure that will accommodate both • cars and heavy trucks. The report does not indicate unusual site conditions that would require the use of any extraordinary bridge construction methods. The report and bridge design are included in the land use application packet. 3. The site conditions are adequate for the proposed use as evidenced by the existence of the current canal bridge structure. The soil conditions have been evaluated and the bridge design has incorporated the necessary structural elements to compensate for any deficiencies in the soil composition. The replacement structure has a design life of 75 - 100 years. Bridge design plans are included in the packet for review. 4. The project proposes to replace the existing Childs Road bridge over Oswego Canal with a new structure. A geology report was prepared for the project site in 1995 by an ODOT geologist and is included in the application packet. The report describes where test samples were taken; the type of soils encountered and a recommendation for riprap slope protection on the canal embankment. Bridge design plans are also included in the packet for review. 5. A geology report was used by ODOT registered professional bridge engineers in determining the most appropriate structural design for cars and heavy truck loads. In this design, the bridge will be supported by a combination of steel pipe piles and reinforced concrete. The bridge design is included in this land use packet. • 6. See 5 above. 7. See 1-3 above. 13.040 Miscellaneous Information (1) 1. A comprehensive soils study was undertaken for the project in 1995. The report describes where test samples were taken; the type of soils encountered and a recommendation for slope protection on the canal embankment. The report is included in the land use application packet. _ Utilities 14.020 Standards For Approval (1)—(8) • 38 pre-application conference.doc 0 7 � This is a bridge replacement project. The location of all exisitng utilities have been 1111 identified and are shown on the attached design plan. The following utility companies in the project area have been notified: • City of Lake Oswego (sewer) • Northwest Natural (gas) • GTE (telephone) • TCI (cable TV) • PGE (power) • Rivergrove Water District (water) There are no plans to include more utilities. Provisions have been made in the construction plans to adjust the existing utilities as needed. There should not be any disruption of service for water, gas, telephone or power. TCI service may be temporarily shut down during pole relocations and adjustments. Water valve covers and sewer manholes will be adjusted as needed. The bridge design includes utility openings for 1 future expansion. 1. Utilities Required. This is a bridge replacement project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. The bridge design, prepared by an ODOT registered professional engineer includes utility openings for future use. Project plans • are included in the packet. 2. Easements. Temporary easements from the Lake Corp. will be necessary for the project to provide for temporary pole relocation for TCI cable. ODOT personnel have started the process of right of way negotiation to secure the easement rights. 3. Sanitary Sewers. City of Lake Oswego sanitary sewer line currently runs parallel to the existing bridge on the south side of the existing bridge and will not be disturbed. 4. Capacity and Grade. All existing utilities located in the vicinity of the project will not be permanently affected by this project. Bridge openings are provided for future expansion. 5. Design. All existing utilities located in the vicinity of the project will not be permanently affected by this project. Bridge opeiings are provided for future expansion. 6. Utilities Service. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. S 7. Design. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing 39 pre-application conference.doc A utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to • include additional utilities. The bridge design, prepared by an ODOT registered professional engineer includes utility openings for future expansion. Project plans are included in the packet. 8. Water Service. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. The bridge design, prepared by an ODOT registered professional engineer includes utility openings for future expansion. Project plans are included in the packet. 14.025 Standards for Construction (1)—(9) 1. Utilities Easements. No utilities will be necessary for the project. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. Project plans are included in the packet. 2. Utilities Construction. TCI service may need to be relocated to a temporary pole north • of the existing bridge. Contract provisions will be written that direct the contractor to minimize impacts to the surrounding area and to mitigate any disturbances with the appropriate vegetative plantings. 3. Restoration of Disturbed Areas. Contract provisions will be made to include restoration work of disturbed areas to the prior condition. 4. Underground Utilities. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. 5. Sanitary Sewers. City of Lake Oswego sanitary sewer line currently runs parallel to the existing bridge on the south side of the existing bridge and will not be disturbed. 6. Sanitary Sewer Design. City of Lake Oswego sanitary sewer line currently runs parallel to the existing bridge on the south side of the existing bridge and will not be disturbed. The bridge design, prepared by an ODOT registered professional engineer includes utility openings for future expansion. Project plans are included in the packet. • 40 pre-application conference.doc L) 'v 72. 7. Service Laterals. No service lines will be included as part of this project. City of • Lake Oswego sanitary sewer line currently runs parallel to the existing bridge on the south side of the existing bridge and will not be disturbed. 8. Hydrants. No hydrants will be installed for this project. No utilities will be necessary for the project. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. Project plans are included in the packet. 9. Utilities Construction. No utilities will be necessary for the project. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. Project plans are included in the packet. 14.035 Procedures (1,2) 1. Utilities Plan. No utilities will be necessary for the project. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, • power and water. There are no plans to include additional utilities. Project plans are included in the packet. 2. Easements. No permanent easements will be required for the project. All existing utilities located in the vicinity of the project will not be permanently affected by this project. The project will make use of the existing utilities; sewer, gas, telephone, cable TV, power and water. There are no plans to include additional utilities. Project plans are included in the packet. 14.040 Miscellaneous Information This is a bridge replacement project paid for in part by Federal Highway Administration, Oregon Department of Transportation, Clackamas County and City of Lake Oswego. The location of all exisitng utilities have been identified and are shown on the attached design plan. The following utility companies in the project area have been notified: • City of Lake Oswego (sewer) • Northwest Natural (gas) • GTE (telephone) • TCI (cable TV) • • PGE (power) • Rivergrove Water District (water) 41 pre-application conference.doc L `l 3 There are no plans to include more utilities. There should not be any disruption of service • for water, gas, telephone or power. TCI service may be temporarily shut down during pole relocations and adjustments. Water valve covers and sewer manholes will be adjusted as needed. The bridge design includes utility openings for future expansion. Hillside Protection Standard 16.020 Approval Standards (1)—(7) 1. Project scope: The project involves removal of the existing 20 ft. x 60 ft. steel structure and replacing it with a 38 ft. x 62 ft. concrete structure. The surrounding area is characterized by a forested canopy of alder, maple and ash trees intermixed with non-native blackberries and low growing shrubs and vines. There are about ten trees with diameters of 5 inches or greater in the project impact area that will need to be removed and mitigated for(see attached landscape mitigation plan). The stream (canal) has been subjected to high water flows in the recent past. The stream slopes are steep and in some areas nearly vertical with riprap along some sections. The construction plan calls for embankment riprap under and slightly upstream and downstream from the bridge. Riprap material is used as a means of 1111 erosion control and slope protection especially in the areas around the bridge abutments. The riprap material will be confined to the slope and held in place with steel sheet piling installed at the outside edge of the natural stream channel. The sheet pile will be installed first and the riprap material carefully installed behind it. No riprap material will be placed in the stream channel. This work will be performed at the top edge of the stream corridor and from the existing roadbed. The contractor will utilize construction equipment capable of extending the necessary construction machinery over the stream embankment from on top of the canal slope. This type of equipment is regularly available as the distance from the top of bank to the stream channel is only 7 feet or less. Construction equipment of this sort is capable of extending out to 20 feet or more. Tree and vegetation removal in the immediate area of the new bridge and the roadway sideslopes will be undertaken in accordance with ODDT specifications for Clearing and Grubbing (Section 00320.00) Sub-Section 00302.03 contains provisions that detail the restrictions on clearing and in part instruct the contractor to avoid all vegetation in the work area designated to remain and to confine all construction activities to the immediate work areas only. A landscape plan is attached that shows the area of vegetative clearing and planting mitigation. Erosion control measures have been called out in the Contract Specifications and in the Erosion Control Plans. The project will be built during the summer months, a time • 42 pre-application conference.dpc J UL74 of normally low rainfall intensity and duration. Every precaution will be taken to • protect the canal stream from sediment runoff. The erosion and sediment control plan as shown in the construction plans has been developed for anticipated site conditions. The project contractor must submit to ODOT construction engineers detailed plans that show the specific erosion control measures for each stage of the project. 2. Cuts and Fill. The project purpose is constructing a new 38 ft. wide x 61 ft. long bridge over Oswego Canal on the existing Childs Road alignment. The affected properties are owned by City of Lake Osewgo and Lake Oswego Corporation. With the exception of fill slopes, all design elements stay within the existing right of way. There will be minor impacts to the adjacent properties due to construction and toe of fill extensions. Fill slopes of maximum slope reduce right of way encroachment. 3. Cuts and Fills. — Minimum Requirements. LOC states: "In the absence of a an approved engineering report these provisions may be waived for minor fills not intended to support structures." As noted in (2) above this project includes only minor roadway fill slopes. The existing canal slopes in the immediate project area will be replaced with riprap material as a means of slope protection and erosion control in the vicinity of the bridge. 4a. Landslide Occurrences. The project crosses the Oswego Canal along Childs Road. This area has not been identified as a high risk area for landslides. Although the canal slopes are steep, measures to stabilize the slopes — riprap material and vegetative plantings -have been incorporated into the design(see attached design plans). b. This section does not apply as the project area is not in a landslide hazard area. 5. Cuts and Fills. This section applies to "land with slopes in excess of 12 percent." With the exception of the canal banks, the project area is not in an area with slopes in excess of 12 percent. The canal slopes will be reinforced with riprap material as a measure of erosion protection. The attached plans (signed by an ODOT registered engineer) show detail drawings of the riprap construction scheme. 5a. Toe of Cut and Fill. This section does not apply as an easement will be provided for roadway fill slopes. - b. Removal. The canal slopes under the new bridge will be "cut" and replaced with riprap material as shown on the attached project plans. c. Structural Fill. The canal slopes under the new bridge will be "cut" and replaced with riprap material as shown on the attached project plans (signed by ODOT registered professional engineer.) d. Retaining Walls. There are no retaining walls planned for this bridge project. This section does not apply. • 43 pre-application conference.doc l I � 6. Roads. The project purpose is to replace Oswego Canal bridge at the Childs Road overcrossing. The project provides for adequate vehicular passage and utilizes maximum roadway sideslope grades to minimize encroachment on to adjoining rights of way. Roadway and wetland drainage facilities have been provided for as shown on the attached project plans. 7. 50 Percent Slope — Density Transfer. This is a bridge replacement project. The existing bridge will be removed and replaced with a slightly longer and wider structure in the same location. A "density transfer" does not apply in this case. 16.025 Construction Standards (1,2) 1. Erosion Control. The contract specifications call for the contractor to use section 00280 — Erosion and Sediment Control - of the ODOT 1998 Supplemental Standard Specifications. These standards are equivalent to City of Lake Oswego erosion control standards. Also, see attached erosion control plans. 2a. Slope Stabilization and Re-vegetation. Contractor will obtain permits as required before initiating construction activities. b. Execution of Grading Plan. ODOT inspectors will be monitoring the project site to • ensure contractor compliance with the approved grading plan. c. Stripping of Vegetation. All "stripped" areas on slopes greater than 20-50% (canal slopes) will be either re-vegetated with native plantings or riprapped to provide maximum erosion control (see landscape and construction plans). 16.035 Procedures (1)—(6) 1. Use of Survey Information. A full survey of the project area has been completed. The survey information includes a model of the existing terrain (slope lines and grades), survey ties of the exisitng features (trees, signs, roadway and intersecting approaches) and all utilities (underground and above ground). 2. Removal of Vegetation. All vegetation in the construction zone will be removed and replaced according to the attached landscape plan. The contractor will be using ODOT Specifications 01040 —Planting as the instrument to direct the landscape work activities. The project contractor is directed to apply the ODOT Standards Specifications Section 01010 — Topsoil. A special provision (section 01040.10) is included to "replace all removed topsoil during construction with topsoil". The contractor will also be directed • 44 pre-application conference.d • r l to apply Section 00280 — Erosion and Sediment Control — ODOT 1998 Supplemental • Standard Specifications for all erosion control efforts. See also attached plans. 3. Severe Erosion and Landslide Hazard Areas. The project is not in an area considered a high risk for severe erosion or landslides. The canal banks are steep but will be reinforced with riprap material to prevent any embankment erosion. See attached project plans for construction details. 4. Plan Filing. The contractor will be directed to submit an erosion control plan for City approval. 5. Survey of Contours and Etc. A detail map showing contours, trees and other features is attached. 6. a.- d. Grading Plan. This is a bridge replacement project. The project proposes to widen the existing roadway to match the new bridge design width of approximately 38 feet. other than extendingthe existing are no plans to grade the existing landscape sideslopes and clearing vegetation to accommodate a wider road section. The canal slope under and around the new bridge will be riprapped for embankment stabilization and erosion control. There are no significant changes to the natural terrain. A contour map of the project area • is attached. There are no structures (buildings) in the vicinity of the project area. The attached project plan includes the finish bridge and roadway design and the proposed drainage design. Any "disposal of soil" will be the responsibility of the contractor, although there will not be a significant amount. The contractor is wholly responsible for obtaining the necessary disposal permit. A contractor has not been selected to date. The selection process begins after the project has been let out for bidding — approximately in March, 2000. 16.040 Miscellaneous Information Known Potential Severe Landslide Hazard Areas. The project area is not in a landslide area. This section does not apply. - Flood Plain 17.020 Standards For Approval (1)— (6) 41) 45 pre-application conference.doc -: 77 1. Permit Review. A DLS (completed) and Tree Cutting permit (to be submitted) will • be necessary. Also a design review by National Marine Fisheries Service NMFS and ODF&W (landscape mitigation plan, to be submitted) will be necessary to comply with fish mitigation requirements. 2. Encroachment Within Floodways. This project proposes to replace Childs Road bridge over Oswego Canal. A Hydraulics Report is attached that shows "no rise" in the 100 year flood elevations from this project. 3. Restrictions Within Floodplains. This project proposes to replace Childs Road bridge over Oswego Canal in the same location as the existing bridge. The new bridge will be elevated approximately 1 foot higher than the existing. The bridge is designed to accommodate canal flow during 50 year flood events. A 100 year flood event will overtop the bridge as it does currently. Studies were made to determine the affects of raising the structure above the 100 year flood plain. The study showed that the roadway sideslopes would encroach on the adjoining wetland areas to an unacceptable level. The decision was made to balance the need to minimize sideslope encroachment and reducing structure overtopping probability. The resulting design is the compromise solution. a. This is a bridge replacement project. The bridge will be constructed in a known flood hazard area. The existing bridge is in the flood hazard area. Construction materials will be used (rock, concrete, steel, asphalt) that eliminate flood damage to the new structure. See also No. 3 above. b. There will be no application for a building permit as this is a bridge replacement project. c. See No. 3 above. d. See No. 3 above. e. All vegetation removed for the project will be replaced with native plantings as shown on the attached landscape plans. f. See No. 3 above and the attached Hydraulics Report. 4. Vehicular Access and Circulation. This project proposes to replace Childs Road bridge over Oswego Canal in the same location as the existing bridge. The new bridge will be elevated approximately 1 foot higher than the existing. The bridge is designed to accommodate canal flow during 50 year flood events. A 100 year flood event will overtop the bridge as it does currently. The western approach to the new bridge is below the 100 year flood plain. Therefore, vehicles will not be able to access the bridge during flood events. The road would have to be closed at that point. The new bridge has no affect on the existing flood level as the Hydraulics Report indicates. 5. Storage. There will be no materials stored at the bridge site. This section does not apply. • 46 pre-application conferere.doc u :;78 6. Alteration of Watercourses. There will be no alteration of the Oswego Canal. This • section does not apply. 17.025 Standards For Construction (1)— (6) 1. Elevation Certificate. Flood elevations are provided in the attached Hydraulics Report. Bridge elevations are shown on the project plans. 2. Anchoring. The hydraulics report clearly shows that the bridge will be overtopped during 100 year flood events. The bridge design is certified by a Iicensed professional ODOT bridge engineer and takes into consideration the overtopping probability. See also the attached project plans. 3. Construction Materials and Methods. This is a bridge replacement project. The bridge designer is aware of the probability of water cresting over the bridge. All materials used in construction of the new structure takes this fact into account. See also attached bridge plans. 4. a. Utilities. All existing utilities in the project area will not be affected by this • project other than minor adjustments to manhole covers and water valve boxes. b. No new water supply systems are planned for this project. c. No new sanitary sewer systems area planned for this project. d. No new waste disposal systems area planned for this project. e. No electrical, heating, ventilation, plumbing, air-conditioning, equipment systems area planned for this project 5. Unified Building Code. This is a bridge replacement project. All precautions have been made to reduce the risk of bridge structural damage in the event of a 100 year flood occurrence. See project plans. 6. Manufactured Homes, This is a bridge replacement project. This section does not apply. 17.035 Procedures (1)—(3) 1. Information Required. All required information can be found in the attached Hydraulics Report and project plans. 1111 2. Variances. This is a bridge replacement project at the same location, and slightly elevated. No FEMA approval is required. See also Hydraulics Report. 47 pre-application conference.doc ►"1 Ill li .. lJ 3. Records. No comment • Access 18.020 Standards For Approval (1)—(6) This section applies to residential or commercial developments that create or generate increase traffic volumes. This is a bridge replacement project and will not have a direct impact to traffic volumes. The section, Access, from 1-6 does not apply to this project. 1. See above 2. See above 3. See above 4. See above 5. See above 6. See above Site Circulation — Driveways and Fire Access Roads • 19.020 Standards For Approval (4) 4. Fire Access Lanes. This a bridge replacement project. The project proposes to replace the existing Canal Road bridge on Childs Road. The new bridge will provide a wider street section than the existing roadway. The new bridge will be constructed to handle loads in excess of the weight of any fire truck in the area. See also attached bridge plans and "Preliminary Narrative". 19.025 Standards For Construction (1)—(6) This a bridge replacement project. The project proposes to replace the existing Canal Road bridge on Childs Road in the same location. At the west end of the bridge are located Canal Road and the entrance to Bryant Woods Park. These two road approaches will not be relocated. There will be some additional paving and curb returns at the intersection with Childs Road. See also the attached project plans. 1. See above • 2. See above 48 pre-application conference.doc 7 • 3. See above 4. See above 5. See above 6. See above Site Circulation — Bikeways, Walkways, Accessways 20.020 Standards For Approval (3) —(4a), (5) 3. Walkways. 5 foot wide sidewalks are provided in the project. Ramps are provided at the termini of each sidewalk end. See attached plans. 4a. See above. 5. Accessways. There will not be any accessways included in the project. Sidewalks and shared bicycle lanes on the north and south side of Childs Road are provided. All bicycle and pedestrian facilities are located adjacent to and parallel to the roadway. 20.025 Standards For Construction (1) —(6) • 1. Surfacing. Sidewalk along the roadway is constructed of four inches of concrete over crushed rock. Bikeway is shared with vehicles. See project plans for pavement design. 2. Sidewalk Width. Sidewalk is five feet wide. See project plans. 3. Sidewalk Cross Slope. Sidewalk cross slope varies. See project plans. 4. Sidewalk Ramps. Ramps are provided at the sidewalk ends. See project plans. 5. Surface Drainage. The sidewalks are sloped perpendicular to the roadway surface and provide for sheet flow off the surfacing. The drainage along the bikeway of Childs Road will, by design, have to flow longitudinally to the surface as this is normal drainage procedures for a roadway surface. See projectplans. 6. Accessway. There are no accessways included in this project. This section does not apply. • Chapter 42 Streets and Sidewalks 49 pre-application conference.dgc - � " 81 42.02.010. no comment • 42.02.020. plans and draft specifications are attached. no comment 42.03.005 Purpose. no comment 42.03.010 Functional Classification. Childs Road is classified a Major Collector. This project to replace Oswego Canal bridge meets the roadway requirements for a major collector. See project plans. 42.03.015 Application. Childs Road is classified a Major Collector. According to the City Engineer, Mark Schoening, and planner, Morgan Tracy, this project to replace Oswego Canal bridge meets the roadway requirements for a major collector. 42.03.05. no comment 42.03.025 Standards. All factors ,1-11, have been addressed in this report. See also attached project plans, Hydraulics Report and Landscape Plan. 42.03.030 Arterial Streets. The project is located on Childs Road, a designated Major Collector. This section does not apply. • 42.03.035 Arterial Streets — Standards . The project is located on Childs Road, a designated Major Collector. This section does not apply. 42.03.040 New Collector, General Standards, 1-6. This project proposes to replace the existing Oswego Canal bridge on Childs Road. This is not a new street. The design roadway width meets city standards as part of the bridge project. See attached plans. 42.03.045 Collector Streets, Specific Standards 1,2. This project proposes to replace the existing Oswego Canal bridge on Childs Road. This is not a new street. The design roadway width meets city standards as part of the bridge project. See attached plans. All other criteria have previously been addressed in this report. 42.03.050 Local Residential Streets, General Standards. Thg project is located on Childs Road, a designated Major Collector. This section does not apply. 42.03.055 Local Residential Streets, General Standards. The project is located on Childs Road, a designated Major Collector. This section does not apply. 42.03.58 Utilities. The existing utilities along and or under Childs Road will not be displaced as a result of this project. 50 r, • 0n pre-application conference.d 42.03.060 Grades. The grade of Childs Road will be adjusted to approximately 6%. This is IIIbelow the standards of 10% for a collector. See project plans. 42.03.70 Curves. The project will adjust the existing alignment of Childs Road slightly. Curves will remain above the minimum standards for a collector. See project plans. 42.03.70 Intersections. The existing street connections to Childs Road will remain the same in the project area. See project plans. 42.02.075 Miscellaneous Streets—Standards. This code has been addressed. 1. The right of way width of Childs Road will be adjusted to accommodate the added roadway width and fill slope extensions due to widening. See attached plans. 2. Loop streets. Do not apply to this project. 3. Alleys. Do not apply to this project. 4. One-Way Streets. Do not apply to this project. 42.03.085 Cul-de-Sacs and Dead End Streets. Do not apply to this project. • 42.03.090 Street Names. No name changes to the existing streets are proposed for this project. This section does not apply. 42.03.095 Modifications. No modifications are necessary for this project. This section does not apply. 42.03.100 Reserve Strips. No reserve strips or street plugs are planned for this project. This section does not apply. 42.03.105 Provision for Future Extensions. This is a bridge replacement project on existing Childs Road. This section does not apply. 42.03.110 Provision for Widening Street. Childs Road will be adequately widened for future use. See project plans. This section does not apply. -a 42.03.115 Half Streets. This is a bridge replacement project. A full roadway design is provided for Childs Road. This section does not apply. 42.03.120 Rules . . . Railroads. There are no railroads in the vicinity of the project. This section does not apply. • 42.03.125 Regulations For Marginal Access Streets. This is a bridge replacement project. This section does not apply. 51 pre-application conference.doc 0 ..- 83 • Article 42.04 Construction Permits 42.04.110 Permits to Construct. Contractor to apply for permits before construction start. 42.04.130 Conditions on Issuance. The grade lines for Childs Road in the project area have been reviewed and approved by city engineering staff. 42.04.140 When May Be Refused. No comment 42.04.150 What Permit To Specify. No comment 42.04.160 What to be Printed on Back. Project plans and specifications addressing sidewalks have been reviewed and approved by city staff. See also project plans. 42.04.170 Costs. Costs shall not be borne by applicant. They will be borne by city as this project is constructed for the city at city request. 42.04.180 Cash Deposit . . . Applicant is not depositing money to cover expenses of the city. This is a city project at city request. • 42.04.190 Duties of City Engineer. This is a city project at city request. No expenses will be incurred by applicant for permits or work performed by the city for this project. 42.04.200 Records. No comment 42.04.210 Work to be Done Under Supervision . . . No comment Article 42.06 Offences These articles, Depositing Trash; Fishing on Bridges; Obstructing Traffic; Cellar Doors; do not apply to this project. Article 42.08 Sidewalks 42.08.400 Sidewalks. Five foot wide sidewalks on both sides of Childs Road are included in the project. See project plans. • 52 pre-application conference y 4 • 42.08.410 Sidewalks to be Kept in Repair. The project abuts city owned and Lake Oswego Corporation property on both sides of the project. See project plans. 1. See above 2. See above 3. See above 42.08.420 Notice to Repair. Does not apply. See 42.08.410 above. 42.08.430. Time Limitation . . . Does not apply. See 42.08.410 above. 42.08.440 Correction by City. Does not apply. See 42.08.410 above. 42.08.450 Lien Perfected. Does not apply. See 42.08.410 above. 42.08.460. How Lien Recorded. Does not apply. See 42.08.410 above. 42.08.470. How Lien Collected. Does not apply. See 42.08.410 above. • Article 42.10 Christmas Decorations This article does not apply. Article 42.12. Permit 42.12.610 Permit. Permits have been addressed previously. Contractor will obtain necessary permits for this, a city project to replacement Oswego Canal bridge. 42.12.620 Application. See above - 42.12.630 Minimum Fee. See above 42.12.640 Cash Bond. See above 42.12.650 Conditions. Permits have been addressed previously. 42.12.660 Issuance. No comment S42.12.670 Corrections . . . No comment 53 pre-application conference.doc 0 4) • Article 42.18 Public Rights of Way and Easements This project to replacement Oswego Canal bridge will require permanent easements for roadway and temporary easements utilities relocations. Other right of way issues have been addressed previously. Article 42.20 Vacation of Public Rights of Way No vacation of public rights of way are need for the project. Chapter 52 Erosion Control ODOT contract provisions stipulate that full erosion control measurers will be implemented during construction activities — ODOT Specifications Section 00280 Erosion and Sediment Control. • Chapter 55 Tree Cutting The project proposes to replace Oswego Canal bridge on Childs Road. This work will involve widening the existing roadway approximately 18 feet and constructing sidewalks along both sides of Childs Road. The sidewalks will extend east and west of the new bridge. There are ten trees (5 Ash, 3 Maple, 2 Alder) with diameters greater than five inches that will need to be removed due to the effects of road widening and sidewalk construction. An attached landscape plan shows the location of the subject tress and also the mitigation plan to make up for the loss. The contractor is directed in the contract provisions —ODOT Specifications Section 00320 Clearing and Grubbing to limit construction impacts to the immediate project area as_indicated on the attached plans showing the project impact area. End S 54 pre-application conferenc oc - L (,b Oregon Department of Transportation INTEROFFICE MEMO • Bridge Section 986-4200 986-3407 FAX To: Memo to File DATE: November 15, 1999 FROM: Eric E. Bonn Structural Design Engineer SUBJECT: Preliminary Narrative Oswego Canal (Childs Rd. ) Bridge Section Childs Rd. Clackamas County Bridge #18095 Key 07253 Project Justification This project originated due to the low sufficiencyratingon • the existing bridge . The existing bridge was built in 1925 using steel turntable members dating from the 1880 ' s. The current width of 20 ' is also substandard for the recorded traffic levels . Upon completion of the new bridge, the facility will be turned over from the County to the City. Right-Of-Way Additional easements will be required from the Lake Oswego Corporation and the City of Lake Oswego. Permits Clackamas County and ODOT Region 1 will handle permits required for this project . :fir Utilities The following utilities were reviewed for possible impacts due to the new construction: Portland General Electric, US West Telephone, Northwest Natural Gas, Lake Oswego Water, Lake Oswego Sanitary Sewer, Rivergrove Water District, and Columbia Cable TV. Of these, none have yet requested to hang their lines on the new bridge. Blockouts will be provided in EXHIBIT 15 LU 99-0069 n.- J .: L) ( Memo to File - Oswego Canal Bridge Section November 15, 1999 Page 2 the abutments to allow for future utility placements under • the sidewalk . Special care will be taken to avoid the Rivergrove Water District main on the north side of the structure . Geometry and Layout The existing horizontal alignment is to be matched to the degree possible . The vertical alignment will be modified to raise the west end of the bridge 0 . 2 - 0 . 3 m. The bridge starts on a slight horizontal curve that ends approximately halfway through the structure . The bridge will lay virtually east/west . The vertical alignment at the bridge is a 40 meter long sag vertical curve with an entrance grade of 1 . 41% and exit grade of 6 . 55% . The banks of the Oswego Canal are at slight angles to the roadway alignment . The end bents will be parallel . The layout is made up of two 3 . 0 m wide travel lanes, two 1 . 2 m wide shoulders, and one 1 . 8 m wide raised sidewalk on the south side seperated from the travel lanes with a traffic rail . An exception is required for this layout due to • substandard roadway width. The new bridge is to be designed in metric units according to AASHTO' s Load and Resistance Factor Design (LRFD) Specification, Second Edition, 1998 . Hydraulics The bridge spans the Oswego Canal . This canal carries water from the Tualatin River to Oswego Lake . The canal is controlled under normal flow levels by head gates at the Tualatin River . High water is taken as the 50 year flood event with an elevation of 35 . 14 meters . Riprap will be used for channel protection. The Lake Oswego Corporation requested large enough stones be used so they will remain in place in a flood event and iildren would not be able to throw rocks . • , 85 Memo to File - Oswego Canal Bridge Section November 15, 1999 Page 3 • Foundations The Foundation Designer has recommended pile-supported footings at each end on the new bridge. The piling will be 323 . 8x9 .5 PP, a steel pipe pile, driven closed-ended. Structure Features The new structure will be 19 meters long. Eight prestressed slabs (660 Slab, dwg. BR420) will be used. The roadway will have two 3 . 0-meter lanes with 1 . 2-meter shoulders . A 1 . 5- meter sidewalk will be mounted on both sides of the roadway. Standard sidewalk mounted combination rails (concrete parapets with a steel tube mounted above) will be constructed on the outside of each sidewalk. No end panels are to be constructed on this project . The design vehicle will be an HL-93 truck. Design Concepts • Public Input--The local citizens were very vocal in the determination of the bridge width. When initially proposed, the structure was to carry two twelve-foot travel lanes, two six-foot shoulders, and two five-foot, raised sidewalks . The City of Lake Oswego garnered the services of architect Curtis Finch, FAIA, to provide aesthetic input into the bridge design. Agreed upon elements include the arch facia treatment, pedestrian rail design and color, concrete texturing and color, and wingwall/abutment details . Alternatives Considered--A spead-box beam with concrete deck alternatives were considered. This option was approximately $30, 000 more expensive than the slab option selected. Staging--Through traffic on Childs Road will be closed during construction. A detour route using Pilkinglon Rd. , Jean Rd. , and Bryant Rd. will be created. Staging construction to allow the existing bridge to remain open was not acceptable due to the amount of vegetation clearing and impact to park lands that would be required to realign Childs Rd. The existing structure type width does not permit using portions of it during staged construction. Cost--The estimated structure cost for this structure, based • on quantities is $178, 000 as shown on the attached estimate Memo to File - Oswego Canal Bridge Section November 15 , 1999 Page 4 sheet . This includes 10o for mobilization and 20o for • engineering and contingencies . Bid Schedule--The anticipated let date is May 22 , 1997 . i • ( V �. .)a/ S Name of applicant O 1, O Ta45- ,/Gl 7,Pre-App. No. • Subject Property: Tax Lot(s) Tax Map(s) Address or General Location: (�,e7r / 6 � C C1j;/l5 2_4 , AFFIDAVIT OF POSTING NOTICE I, 2441 . do swear or affirm that I am (represent) the party initiating interest in (_/a proposed a6 Rc i 0( L,,a7,60.,,,// /e.e2,1, e �, /7-affecting the land located at eazn Q/gie./ j ir&S. �f/� , and that pursuant to LOC 49.36.705, did on the i day of 5572 >?,/L) 4 , 19_ personally post the notice indicating that the site may be proposed for a ./.(, )'jr1 /,e 5 P application. • The sign was posted at ,AP�h/tn f 44 a...a eJ/ dd-'I.J2 .e. 6:.?, stC 4 era. (state location or/property) This .2.( day of5 / A . 19 77 O Sit .� Si tune ✓ Subscribed and sworn to, or affirmed, before me this Li - day of , 19 q.1. ergfct g B JEANNE TAOEH GIBSON�� NOTARYPUBLIGOREGON //// A,(24.& `;;,� COMMISSION NO.a23sas No CPublic for the State of Oregon MY COMMISSION EXPIRES MAY 18,2003 IPMy Commission Expires: 5-18- 03 EXHIBIT 16 LU 99-0069 ; 31 Y 1V 2Od( l ' L. \L, Childs Road Canal Bridge Replacement October 14th, 1999, 7:00 p.m. Lake Oswego City Hall Municipal Court Room ODOT: Rick Keene Jane Estes Steve Harry Steve Harry: Welcomed everyone and requested that attendees sign in and fill out comment cards. Explained that the meeting is informational and introduced Rick Keene. Rick Keene: Explained that the meeting is being held as part of the land use process. Bridge width: The width had been controversial, and it has shrunk from 58' to 40'. This minimized the impact, although some of the west end touches ditches. ODOT is minimizing impacts by lifting drainage pipes. We are steepening the slopes to minimize the footprint and using native plants to revegetate. Detour: The bridge is being taken out in one piece. Couldn't build a temporary bridge because of the impact on wetlands, so there will be a detour for 4-6 • months. Q: Why so long? A: Normal construction time using daylight hours. Must be done in summer (2000) because may have salmon and steelhead. Q: Is the water flowing into Lake Oswego from the Tualatin River? A: Yes. Federal regulations regarding salmon and steelhead. Detour will be about 1-Y2 miles and take about five minutes. Not all traffic will use detour, some will find other ways. Q: Will local people on Canal Road be able to get to their homes? A: Yes. If they can't they should contact the Project-Manager's office. Q: Why is Clackamas County involved? A: State law. When done, the bridge will belong to Lake Oswego. Q: What will it look like? A: Powdered forest green rail, with a light brown arch beneath. • Q: How can we build without being on the canal bottom? • A: This is a sensitive area, so we are using extraordinary means, working from the top of the bank. We will require erosion control measures and riprap on the slopes. Schedule: Starts June 2000, and should take 4-6 months. Neighborhood meeting tonight, then ODOT will file a land use application, and there will be a public meeting. Q: Who maintains signs for the detour? A: The contractor. Q: How is that enforced? A: Contractor can't enforce the detour, but can make sure signs are up. There will be signs at 65th and Stafford, a pre-warning a couple miles before the project. Q: Is the County or ODOT doing anything about Childs @ Stafford? A: (from county rep.) No. There is a project in the 5-year CIP, but no funds. Q: What does the railing look like? A: Fairly modern, square tubes. • Q: How high is the rail? A: About four feet. Q: Will the bike lane be striped? A: No. Shared use lane. Lanes are 14' total. Comment: Bikes go on sidewalk or on road. City is planning sidewalk extension to Bryan, asphalt sidewalk. Q: Is the bike lane on one side or both? A: The bridge is symmetrical. -� Q: If UGB expands, what plan is there for the bridge if traffic increases? What provisions? A: No provisions. We picked this width because City of Lake Oswego has no plans to widen Childs Road. A wider bridge would impact wetlands. County Comment: This bridge design lends itself to widening if needed. • OL, 33 Q: Why would we ever need to widen the bridge? A: Lake Oswego dries up? 11111 Comment: Six-month detour. People will find a new way. Don't want bigger Childs Road. Q: Will there be a crosswalk or a light? A: No. Not justified. Q: New bridge will be smoother so traffic will speed up. How will it be controlled? A: Childs is a major collector, so no speed bumps. Q: Will Lake Oswego do anything? Signs? A: Ask Lake Oswego. Q: Do we have a set date for public hearing? A: No. Lake Oswego has up to 120 days after land use app is filed. Lake Oswego Comment: We give property owners within 300 feet thirty days notice. Please fill out comment cards. Q: Will ODOT monitor water quality during construction? • A: Yes, part of the project. Sensitive times—placing riprap and sheet pile. Q: When Lake Corp. built new dam, did they include a fish passage? A: No. (from Lake Corp. rep) Q: Provisions for fire and police service? A: Fire can't go over bridge now because of weight, will use the same route they already use. Q: Are we driving piles. _ A: Yes. Should take about two days, during daylight hours. Q: Does the project start in June or July? A: Work starts in June, in-stream work starts in July. Q: How will the railroad turntable be removed? A: Contractor will figure it out. • v ' 94 Childs Road • Canal Bridge Replacement Lake Oswego Comments from Neighborhood Meeting October 14, 1999 Lake Oswego City Hall Linda Childs 4902 SW Childs Road, Lake Oswego, OR 97034 My primary concern with the addition of the new bridge is that speed of traffic be decreased in some way. Although a 25 MPH limit is posted — it is not enforced. The old bridge is a natural deterrent because of the uneven grade of the pavement. Donald Burdick, Director, Lake Oswego Corporation, P.O. Box 203, Lake Oswego, OR 97034 Construction is proposed for the summer months, a time when Lake Oswego Corporation needs to flow the canal. Elevations are delicate under the bridge area, as flows cannot be impeded • by any construction by closing in the side slopes or raising the bottom elevation. Our upstream head gate is engineered only for the existing canal constraints. Flows are slow, perhaps 57.3 cfs at a maximum. And, elevations are critical. Therefore, debris and siltation would have a significant detrimental impact on Lake Oswego Corporation's ability to manage its lake. Please communicate with Lake Oswego Corporation as to any periods our operations need to accommodate ODOT construction activity. Call Stuart Dunis, LOC Operations Supervisor @ 636-1422. Steve Lundt, 700 McVey, Lake Oswego Corporation, Lake Oswego, OR 97034 A crosswalk and bike path requests have been voiced at the canal open space area advisory committee meetings. Many residents have a strong concern for safety when crossing Childs road from Bryant Woods 'ark to Canal Nature Space. Please do what it takes to make Childs Road safe to cross. S 5 • • • CD Name Org Address City State Zip Phone Notes Gloria and Don Ferris 4601 SW West Road Lake Oswego, OR 97035 639-2874 Nancy Floerke 4011 Coho Lane Lake Oswego, OR 97034 638-5309 Dave George 18978 SW Indian Springs Circle Lake Oswego, OR 97035 639-4686 Amelia Aguine Jeanne Fleming 4185 SW Childs Road Lake Oswego, OR 97034 638-7726 #7 on Map Lorie James LWVWEE 3335 SW Childs Road Lake Oswego, OR 97034 638-3207 Philip and Alice Ashou 19330 River Run Drive Lake Oswego, OR 97034 638-1822 #16 on Map Don Burdick Lake Oswego Corp. P.O. Box 203 Lake Oswego, OR 97034 636-1422 Mike Marchione 4948 SW Childs Road Lake Oswego, OR 97034 624-5466 Kathleen Eisele 4948 SW Childs Road Lake Oswego, go 97034 624-5466 Deborah Shimkus 19653 River Run Drive Lake Oswego, ' OK 97034 638-7774 Linda and Russell Childs 4902 SW Childs Road Lake Oswego, OR 97035 684-7280 Elaine Feifers 19026 Indian Springs Road Lake Oswego, OR 97035 639-9299 Mike and Sue Salch 5255 SW Childs Road Lake Oswego, OR 97034 624-2311 Lynn Huck 19493 SW Olson Avenue Lake Oswego, OR 97034 638-0594 Russ Garrett 19472 SW Olson Avenue Lake Oswego, OR 97034 638-1179 Susan Grayston-Miller 5205 SW Childs Road Lake Oswego, OR 97034 684-5628 Julie and Denny Dempster 4165 SW Childs Road Lake Oswego, OR 97034 638-5630 #8 on Map Michael Good 4161 SW Childs Road Lake Oswego, OR 97034 638-3780 Karl Rohde P.O. Box 227 Lake Oswego, OR 97034 636-2452 Jan and Robert Ellison 19678 SW Perch Court Lake Oswego, OR 97034 638-9342 Dan Zinzer Clackamas County 902 Abernethy Road Oregon City OR 97045 650-3320 Doug Van Dyke Clackamas County 902 Abernethy Road Oregon City OR 97045 Rod Raney Clackamas County 902 Abernethy Road Oregon City OR 97045 Christine Roth 18951 Indian Springs Road Lake Oswego, OR 97035 624-9716 Kathy and Greg Melcher 19445 SW Olson Avenue Lake Oswego, OR 97034 638-7236 Judy and Allen Smith 19398 River Run Drive Lake Oswego, OR 97034 Lorinda and Gary Pearson 4060 Bass Lane Lake Oswego, OR 97034 #21 on Map Sean Finn 19080 SW Indian Springs Circle Lake Oswego, OR 97035 639-9305 Connie Emmons 5101 SW Dawn Lake Oswego, OR 97035 City of Lake Oswego P.O. Box 369 Lake Oswego, OR 97034 1-2-3-5-17 Steve Lundt Lake Oswego Corp. P.O. Box 203 Lake Oswego, OR 97034 4 Carl Lund 4201 SW Childs Rd. Lake Oswego, OR 97035 6 Michael & Suzanna Rood 4161 Childs Rd. Lake Oswego, OR 97034 9 .J Geraldine Potter 4163 1/2 SW Childs Rd. Lake Oswego, OR 97035 10 ' Michael & Sheila Forget 19225 SW Bryant Rd. Lake Oswego, OR 97034 11 Anthony & Katherine Canlas 3977 Bass Ln. Lake Oswego, OR 97034 13 Richard & Patricia Hover 4007 Bass Ln. Lake Oswego, OR 97034 14 Duane & Janice Eicher 4045 Bass Ln. Lake Oswego, OR 97034 15 William & Karen Otto 19364 River Run Dr. Lake Oswego, OR 97034 18 Phillip Bind 19398 River Run Dr. Lake Oswego, OR 97034 19 Joseph & Rita Valdes 19428 River Run Dr, Lake Oswego, OR 97034 20 Erin Fleming, Co-Chair Blue Heron N.A. 17211 Blue Heron Road Lake Oswego, OR 97034 635-9457 Cert Lynne Paretchan, Co-Chair Blue Heron N.A. 17339 Blue Heron Road Lake Oswego, OR 97034 636-9842 Cert Laura Wallace Dickson, Chair Childs N.A. 3778 River Edge Drive Lake Oswego, coft 97034 638-0916 Cert Susan Harrell, Chair Rosewood Action Group 18831 Reao Court Lake Oswego, ' OK 97035 620-6931 Cert Linda Apodaca Blue Heron N.A. 17976 Cardinal Lake Oswego, OR 97034 Linda Brown Blue Heron N.A. 17917 Kelok Road Lake Oswego, OR 97034 Lois Isbell Blue Heron N.A. 16525 Maple Circle Lake Oswego, OR 97034 Joel Johnson Blue Heron N.A. 16634 Maple Circle Lake Oswego, OR 97034 Morgan Tracy City of Lake Oswego P.O. Box 369 Lake Oswego, OR 97034 Jerry Baker City of Lake Oswego P.O. Box 369 Lake Oswego, OR 97034 Donald Burdick 434 Ridgeway Road Lake Oswego, OR 97034 638-3935 Mr. & Mrs. Kelly McCarthy 19666 SW Canal Road Lake Oswego, OR 97034 639-7737 Curtis Finch 2711 Lakeview Lake Oswego, OR 636-9270 Ron Henkle 2300 SW Childs Road Lake Oswego, OR 97034 638-3732 Fred Biatus 2590 SW Childs Road Lake Oswego, OR 97034 638-6246 Stuart Dunis Lake Oswego Corp. 700 McVey Avenue Lake Oswego, OR 97034 636-1422 Mary Mann 5215 Childs Road Rivergrove, OR 97035 620-0898 1111 1111 III Canal Bridge Replacement Neighborhood Meeting 10/14/99, 7 p.m. Lake Oswego City Hall NAME/Interest Area ADDRESS PHONE ifi !1 c,c1 ( ,5_),-4 'rl4I; Rd') 9-I6/ cod, 4 2 q -- 3 7 ? . \ ,/-) - N .._.?_33$.- P,4„,:i2,1-, 1,c_cli 61 frrio 1-.- Li o, 3F-2:_2 ,o`..1 Th...)c)V1AA \_.:YtAiki•c -7-4- .‘c r w&►.r RA . LA), ci7a34 63;,-3q 3.1 1 -ttie--tm fi C)?Cc h-Y /qk :AT 5(1) L 4iJQ f2-17) • 6 30-,7-1.- -cJ -r7 c F 1AJ c— . 7-2 I / LA I=L-�/L 7-E,-- L,"5 .)----7 7.24-7> PoIN\ OAAK , 3CL_, �c. . � c ...., F °- 63 %- 3 -73 J/ ,, r -7D L, 097'2 r t-fa 11- C7i , L? ---li rT (6V NI,/ C_0(2 1 CC) IA(--Q 1= ,j ►i\)t s- L- 6-sc-, (t-t_.- ,_. C �t...ci.= i0. - ci O ,:- (_).\ r LLL c.L, Rri cr'fri- (ip L j- 12 6.) -, � ���CS 7 7a�Ll.1/ - . �/�1 i,y } .5 A/ �.-rl.L.-/.4-id A C1 C<<?e- 1 /�i �PZ')Ki , 6) 0 dO '`?� J L ti_ elf, 1 v ,,.� I -7 'u / 7 /. p76r ire�.i L . O 97o3c (6 -151? JS I % C) C. C�4.10 0 IP • 11 Oregon Department of Transportation Bridge Section • TO: Distribution List_ RECEIVED FROM Ron Reisdorf,P_E., P.L.S Preliminary Managing Engineer JA N 14 1997 pM SUBJECT: Oswego Canal (Childs Road)Bridge#18095 �pM C. Childs Road, City of Lake Oswego lit) Clackamas County Attached is the Hydraulics Report for the subject project Attachment Distribution"List: Bruce Johnson,FHWA Bruce Warner,Region 1 Manager Tom Lauer,Region 1 Interim Construction Engineer Fred Gustafson,Roadway Engineering Manager Alan Lively,Roadway Engineering Section Kamal Kamadoli,Bridge Section ! Eric Bonn,Bridge Section David Vournas,Bridge Section Li Gong,Bridge Section 13-17 darn , ' • 7;1;5 /5 4e Aydr4U/c5 repel, ja, 6ccss'CsT;w''s yu/s , comer/sow °� ��e c �.0-s -"4a-rise. fn /44�yPgc �� oer P/i-vgr-iah . e cJa u hd ve. av ,1 • EXHIBIT 17 LU 99-0069 9 J ' 1 • HYDRAULICS REPORT Project Title: • Oswego Canal (Childs Road) Bridge#18095 Childs Road, City of Lake Oswego Clackamas County Project Location: Road Name Section(WM) Stream New Bridee# Childs Road T2S, R1E Section 20 Oswego Canal 18095 Project Type: Existing Structure/Old Bridee# Proposed Replacement Structure 20' wide by 50' long single span bridge/#6429 Bridge, See Figure 2 Hydrology: Design Freauencv Drainage Area Peak Discharges 50 years N/A-Flow is diverted from Adopted from FEMA's Flood Tualatin River Insurance Study for City of Lake Oswego(Aug. 4, 1987) Hydraulic Analysis: Computer Model Attached Data Sheets Attached Drawings • HEC-RAS' Tables 1,2 Figures 1,2 *The starting water-surface elevations were from Section"H"in FEMA's FIS for the City of Lake Oswego.To comply with local flood regulations,no additional backwater during the 100-year flood was the main hydraulic design criteria used for this project. Potential Scour Elevation for Proposed Structure during 100-year flood: Abutment Tvne Contraction Scour Depth Potential Scour Elevation Spillthrough 0.61 m 29.39 m Riprap Protection for Proposed Structure: Embankment Abutment Pier N/A Class 50(metric) %N/A Detour&In-Channel Work: Detour Needed Recommended Pipe Size In-Channel Work Period No N/A June 1 -September 30 • Other Concerns: • Check Box Issues ❑yes 0 no Has ice been a problem? ❑ yes 0 no Has debris been a problem? Dyes 0 no Has erosion been a problem? oyes 0 no Has scour been a problem? ❑yes 0 no Has channel aggradationldegradation a problem? Dyes ❑no Has roadway been overtopped? ❑yes 0 no Is fish passage required? ❑yes 0 no Is threatened and endangered species on this project? O yes❑no Is flood plain development regulation involved? o yes❑no Is"no rise"in 100 year floodplain required? ❑yes 0 no Is navigational clearance required? Prepared by: Li Gong,P.E. Hydraulics Designer • ted Profe‘Y GINE�. s`o (DampReviewed by: David W.Bryson,P.E. e Hydraulics Engineer ORCsOr� y 30, O fq'. /1-3/.-97 L- . 1 i PROJECT: COMPILED BY: LI GONG Oswego Canal (Childs Road) Br#06429 Childs Road, City of Lake Oswego DATE: December 26, 1995III Clackamas County TABLE 1 HYDRAULIC DATA 1 Existing Bridge 06429 Oswego Canal ROADWAY MAXIMUM ' Clackamas County UNITS DESIGN OVERTOPPING BASE PROBABLE (SI) FLOOD FLOOD FLOOD FLOOD .. Discharge m3/s 41.3 45.6 59.9 124.0 Frequency years 50 60 100 500 1 H.W. Elevation @ Approach Section' with Natural Channel m 34.65 34.78 35.13 35.88 H.W. Elevation @ Approach Section' with Bridge m 34.67 34.80 35.18 35.90 1 Backwater m 0.02 0.02 0.05 0.02 .1 I. III H.W. Elevation @ Upstream Face of Bridget m 34.65 34.78 35.12 35.90 H.W. Elevation @ Downstream Face of Bridge3 m 34.64 34.77 35.12 35.89 Waterway Area @ Downstream Face of Bridge's m2 47.72 48.10 48.58 48.58 Average Velocity @ Downstream Face of Bridge m/s 0.87 0.95 1.14 1.10 REMARKS & FOOTNOTES: - -= * 55.5 m3/s through the bridge and 4.4 m3/s over the road =. ** 53.4 m3/s through the bridge and 70.6 m3/s over the road 1. at stream station 1+020 2. at stream station 1+003 3. at stream station 0+997 4. waterway normal to channel centerline Existine Structure: a 16.15 meters single span bridge 0 r' .' 1rl 04. 4, 40 -• • ... .... Figure 1. Existing Oswego Canal Bridge 16.15 m —36 . `7 100 Year Hlah Welter Flevnttml : 35.12 m.waterway area : 48.50 eauare metere CO �! 50 Year Hlah Water Elevotlon • 3N.64 m 11 L. I _ �r /' + —34 t / a) \ Bottom of beam / E N. / N.\ Croundline • center // C \ / o —32 > \� / / v i. —3 0 1 1 0+145 0+150 0+155 0+160 Station Scale 1 : 100 MEr RIC d:•\data\dgn\osw-des.dgn Apr, 12. 1996 13: 15:30 F-. r w PROJECT: COMPILED BY: LI GONG Oswego Canal (Childs Road) Br#06429 • Childs Road, City of Lake Oswego DATE: February 13, 1996 Clackamas County TABLE 2 HYDRAULIC DATA Replacement Bridge with Spillthrough Abutments ROADWAY MAXIMUM Oswego Canal UNITS DESIGN OVERTOPPING BASE PROBABLE :i Clackamas County (SI) FLOOD FLOOD FLOOD FLOOD Discharge m3/s 41.3 45.6 59.9. 124.0.. Frequency years 50 60 100 500 H.W. Elevation @ Approach Section' with Natural Channel m 34.65 34.78 35.13 35.88 H.W. Elevation @ Approach Section' with Bridge m 34.67 34.80 35.18 35.91 Backwater m 0.02 0.02 0.05 0.03 1111/ H.W. Elevation @ Upstream Face of Bridget m 34.65 34.78 35.14 35.91 H.W. Elevation @ Downstream Face of Bridge' m 34.64 34.77 35.12 35.88 Waterway Area @ Downstream Face of Bridge' m2 45.72 47.51 49.98 49.98 I Average Velocity @ Downstream Face of Bridge m/s 0.90 0.96 1.11 1.08 1 REMARKS & FOOTNOTES: - * 55.7 m3/s through the bridge and 4.2 m3/s over the road ** 54.0 m3/s through the bridge and 70.0 m3/s over the road 1. at stream station 1+020 2. at stream station 1+006 3. at stream station 0+994 4. waterway normal to channel centerline Replacement Bridge: a single span bridge with spillthrough abutments III 61L'4 • • • Figure 2. Oswego Canal Replacement Bridge with Spillthrough abutments Station : 0+153 Elevation: 33.75 m 16.I m I Elev. ■ 35.10 m 36 - - -- Eiev.+ 34.57 m _ • �I 100 Year High Water Elevation • 35.12 m.waterway area • 49.9E eauare meters / J ' to I - _ — - - •t•. l J'� / ii.r. 34 '..ti: s 's�•es. ProDaeed bottom of beam e..mw :.�.- `�;���� f/ Extetlnq bottom of beam ° ��-�- 3 2 ...lark.,o .;�.. • 0;0-= ..�.es CD • ..- ` =: d"v. Croundllne • center .: t, ,e Vie... 0+145 0+150 0+155 0+160 Station • Scale 1 : 100 0 450mm thick Class 50 (metric) riprap METRIC , OPotential Scour Elevation 29.39 m (occurs during 100-yr flood) ir 1 c.\data\dip\osw-des.dgn Aor. 12. 1996 14: 27: 39 `. is -- F Cil • 0106 • OSWEGO CANAL (CHILDS RD) BRIDGE # 06429 ODOT KEY# 07253 WATER QUALITY REPORT prepared by Elaine "Jinx" Kuehn, PE 10/10/99 The project, Oswego Canal (Childs Rd Bridge # 06429), is located within the Tualatin River Watershed. This project is therefore required to address water quality concerns both for compliance with the Tualatin River TMDL and with endangered species concerns under National Marine Fisheries Service due to the potential presence of endangered fish within the canal. Water Quality for the Tualatin River TMDL The City of Lake Oswego sets the implementation standards for compliance with OAR 340-34-455 (Tualatin River TMDL). The letter attached (which was for this project, even though it says Bryant Road - this was confirmed by phone by Russ Chevrette of the City of Lake Oswego) indicates that this project may meet it's requirements for water quality for new impervious surface by providing an oil separating manhole. This is allowed under City code because the project adds only 314.8 sq. m (3388 sq. ft) of new impervious surface and because it is difficult to treat such small areas (less than • 6060 sq. ft.). In compliance with the letter from Russ Chevrette, the project will provide a water quality (oil separating) manhole which is constructed to USA manual standards. The new impervious surface created by the project is only 314.8 sq. m (3388 sq. ft). This new surface is created by the new bridge which is slightly wider that the old bridge and by the tapers matching the bridge width to the existing road. The water quality manhole will be of USA design and will collect water from three areas: - 930 sq. m of road surface will drain to the inlet on the east end of the bridge. - 378 sq. m will drain from the road east of the bridge to the ditch, then to the WQ MH. - 14,447 sq. m of wetlands in the park will drain to the ditch and then to the WQ MH. Most of the water from the wetlands will have already been filtered through the wetlands/ground. The water quality manhole will be designed with a sump of 2 c�`t'i. m (70.6 cu. ft). This is conservative since the basic requirement would be 1.21 cu. m of sump volume. The calculations and manhole diagram are attached as Appendix 1. In addition to the water quality manhole, the project will be designed to include erosion control meeting USA and Lake Oswego standards, and will include restoration of vegetation disturbed during construction and replacement of any trees removed in accordance with the lake Oswego land use code. • EXHIBIT 18 #07253 WQ Report 10/18/99 LU 99-0069 Endangered Species Act - Fish Sedimentation Manhole for Compliance with • Biological Assessment Originally, Clackamas County and ODOT were told by ODFW that there were no fish concerns in the canal, but in the spring of 1999, it was determined that there could be fish in the canal and that the canal is part of the designated ESA area. After several meetings with ODFW and NMFS, it was agreed that the project design would includes several mitigation actions for fish concerns. These included: 1. No riprap at base of the canal: 2. Limiting riprap along sides of canal to the area immediately under the bridge and 1 m out from it as well as the area under the outfall on the SE bridge corner; 3. Restoration of the riparian zone (similar to what is required by the City); 4. Planting a mitigation area in River Run Park to improve the riparian zone along the Tualatin River within 300 ft of the water line; 5. Installing a manhole to improve water quality/reduce sedimentation at the outfall on the SE of the bridge. This outfall drains 57 acres of residential area in Lake Oswego (information provided by Jerry Baker of City of Lake Oswego (may 1999). Therefore, this manhole is designed primarily for sedimentation and a standard baffled manhole type is used (OK'd by Baker of Lake Oswego). The sump is designed to USA standards of 0.245 cu. m /ha. Because there is no flow splitter for this flow, Jerry Baker of Lake Oswego agreed in Sept. 1999 that City maintenance crews would vactor the manhole 2-3 times/year. • Appendix 2 contains the calculations and details for this fish sedimentation manhole. For questions, please call Rick Keene, 731-3289. PR6,,c t::il 'j 1 b22.yPE r- 4� Expires: 6/30/1('99 C r�:v�¢.c YJ / 6/ Z O o prepared by Elaine Kuehn, PE #19229PE S #07253 WQ Report 10/18/99 2 c i t,.,! J �vo Y•w5 N, Ch.) • of rjp 1•rc.J✓1W - ELF OS� t% RECEIVED FEB 0 6 1997 PM APM oREGON DEPARTMENT OF PUBLIC WORK Jinx Kuhen ODOT 123 NW Flanders Portland, OR 97209 January 29. 1997 Cvoi_ os 12 13v2. iP�C- Subject: Stormwater treatment requirements fo ge project Dear Ms. Kuhen, S r7� We understand that the-B-PtoRt Road Bridge widening project has gone through the preliminary design phase illustrating a sand filter to intercept storm water running off the pavement. The inclusion of the filter was apparently in response to language in the City's surface water management design manual (June 1996) which states that an exemption will be considered "...when the net increase in impervious area from proposed buildings is less than the equivalent of two single family dwellings or 6060 square feet This exemption does not apply to parking areas, driveways, or streets." (Emphasis added) The exemption for small areas was allowed because there are few treatment facility designs that will work effectively on a small scale. The exemption did not include streets, etc. because we wanted to retain some degree of treatment for roadway pollutants. Please note, however, that our design manual.- ,.still in the draft stage. After discussing the minimal nature of the new pavement involved with the bridge widening with City staff, we have decided not to make a sand filter a mandatory requirement. We will, however, require oil separator catch basins or manholes. As we continue to refine the language in our design manual, we are realizing the need to emphasize Best Management Practices on small projects, and our final draft will be more sensitive to the unique problems of small projects. Of course, you are not precluded from installing a sand filter if you believe it is the BMP for this application. • Sin y, — t i1_1J ussell hevrette, Engineering Tech. Ill Appendix 1 : Water Quality Manhole Detail and Calculations ID • #07253 WQ Report 10/18/99 3 \ 0 1_:: -0 v-._, 0 0 .....: WATER QUALITY MANHOLE -Mt Pixtrqsrods At tn.1102 heifers alittew;10.AVMs") --- ,----NI.%Clear Wart Area(Ste Cele'ai ,.....-..... .../.. ,.-eek,ere 5:.2,1 Or / LAYeth''';'4-7-7_TR'' *Z. \ ,./ ., i 1 \ \., ., At .. 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' , • • N, 's 1.4 ;:' 2 0 çS Q 2-5 c S - o ( ■ CTr (\ � r V S • • OnOn • December 20, 1995 DEPARTMENT OF TRANSPORTATION TO: Mark Beeson C2031904 Project Manager Region 1 FROM: Ron Jennison le Project Geologist FILE CODE: RECEIVED SUBJECT: GEOLOGY REPORT DEC 2 1 1qq5 Oswego Canal Bridge Childs Road ,c; t- ( Clackamas County {\i ti The attached geology report contains the results of our recent foundation investigation. Copies of this report have been distributed to the Salem Bridge Foundation and Geotechnical Units. Additional copies of this report can be obtained from the Region 1 Geology office. The drill core samples are stored at • Allen Avenue in Beaverton and can be viewed by contacting this office (731- 8306). RJ:jp cc: Bridge Foundation Geotechnical Unit EXHIBIT 19 123 NW Flanders LU 99-0069 t 1 Portland, OR 97209-4037 3 e 1850(11-94) (503).731-8200 FAX (503) 731-8259 S GEOLOGY REPORT OSWEGO CANAL BRIDGE Childs Road Clackamas County • December 18, 1995 C203-1904 • • GEOLOGY REPORT Oswego Canal Bridge Childs Road, Clackamas County By: Ron Jennison (Project Geologist) 1. GENERAL: The project is located (Figure 1) within the City of Lake Oswego (NW 1/4, NW 1/4, Sec. 20, T2S, R1 E). The purpose of this project is to replace an existing structure (Figure 2) with one which will be longer and wider. The bridge crosses over Oswego Canal, which supplies Tualatin River water to the lake. 2. GEOLOGY: The geology of this area (Figure 3) consists of Holocene • (Recent) alluvium (Qal) over Pleistocene flood deposits (Off, Ofch). There is Neogene mudstone below the flood deposits. This mudstone is Miocene to Pleistocene in age and may be equivalent to Sandy River Mudstone which is Miocene to Pliocene in age. These units are not shown on Figure 3, however. Figure 3 indicates a unit (Tgww) of the Columbia River Basalt, north of the bridge site. The borings (TB-501, 502) did not penetrate deep enough to reach this rock. Also of interest on Figure 3, there is a NE trending fault, just east of the project area. 3. FOUNDATION DRILLING: Two test borings (Figure 2) were drilled on 12- 4-95 (TB-501) and 12-6-95 (TB-502). The borings were drilled using a Mobile B- • 53 truck mounted rotary drill and HQ casing with a diamond bit. TB-501 encountered extremely soft- very soft Siltstone (Neogene Mudstone) at 11.6 meters. Standard penetration tests (SPT) were taken in the siltstone. N values • varied from 16 to 43 with an average value of 28. The drilling was terminated at • 18.29 meters. TB-501 encountered the same siltstone at 13.11 meters with N values of 18 to 32 and an average of 27. TB-502 was completed to 19.80 meters. The water level in both borings corresponded to the canal water level at about 4.79 meters. 4. RECOMMENDATIONS: Although the canal flow rate is not very swift, it appears that some riprap should be placed at both ends of the proposed structure to protect the slope. This material can be obtained from any one of the commercial rock sources in the Beaverton/Tualatin area. • childs S • .4 ILL 4.4 :r.. -{ ' ,'� ! -1 `, ,.t �.• \nor ,x wse I - f. 1, ' tltr •ill !,C •io.v: --sw �vFi _--- ^ Vr. .,__ a � _ • z• :•'e., —y�`� , AM?, TI�FARM� .� . - • ' TIIIT I Y.411114. � \ ��f .l� • \OL 0 A PORFF�� J/<e •�O•_ •',° -/7a ' :", /../M• -ke Qewego •,••: .•r'. - 'ai. 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Open Depth I "U" — Undisturbed Sample,Size No. Total Depth is•zrf,•, I 'Date Started I Date Completed Sample Data Sheet No. le2 - Y- 9S /2 -Li-9'5 117 Material Description o m Z o c 4). u 5 a, Color Wet-Dry .e h > °m 'tAO- t m Consistency Jointed-Broken n a o Driving m 8, ¢ r/,- 5 z 1.7. Plasticity Angular-Rounded 8 a- 4-Z Resistance 2¢ 0 0 e 2 Organic Content Drill Remarks etc I o - .G .., r( LL C-1 I a.3M 24 I I C-I ; ...Q 3 G.n .A e. a., ) Cr•t..cLp, Bccp Reek I t.c3 I I I I - I 8 N-1 I 3 - 3 - '/ _ 14.18 14'O I 1` I__ Iv-e: CA.:. w/co,.aP S;17- A✓.75o�iF aiopinr r&rk -r41. Ir bro.iyi . mP. nio; -,1- rrl[d;.e.n 5-i:-cF nkfnceouS. I C=2 I — Io.gp,, 16yl c2; S,lt_ML brown, NP, wef, �1•GaceoKs__ 3.05 _I ' , .lc - ir:/rn S/L T 51 N-2 3 - 8- 5 Io,37 &0 � 136 N-2 : $;lf, /1?L, 6r>wr?. NP, wef,_.Sf;,'; , I I I mike°,.S , L L = 3 I . - C - 3 I G. �Q I N C-3: 7Lvo-Si/74 - /ewer-gave/S -- I I I II — — — ' — — — — — — — q.57I I I I I v/--5.8 rn trip_6VfL_5- 5_7 1 N-3 I 3O -3 3- 11 I c.IS 33 I N-3 : Gravel. arav . de%is ro. ,kbec!. S';/t., ma-rrix . i II 1 < 1 C-Y I I c 37 24/ I \ I C- y: 54,+e a S t'-3 w//e•'S c/.7 . .oe t. a.ro I • 5.8 - 1l.6,., S1/ 7Y- CLAY WSJ N y 1 - 1 -_3 O.VL /OG I St: N-41: S;lfr - c{,ar, /11l - CL, yr#-r, we-1 .5o 4'71'. /,1P,i, _ i C:- S c,36 20 �- I I 7./,21 I rr1 G I lU-S r - 2 - 3 o.r/4 /op 1 )J 5 7 i (' -5:-C,-.-^e s N-i 1-1-= °18 , P I = /9, .,,pd.. n, slt-4F- C- 0.6/ 40 Iv I C.- L ' 5>,..0 . 5 N-y I I ; I _ 9.111I ; — 6 rN-6 I- 2 -S O,YC 10o ,n S2 I tJ-b: 5a...,, 4.5 N -if , rn<d:...n Sf•r{-', • I C- 7 - 1.13 7q I C.- 7: Sn... a 4.•-5 t11-II MO I 1,13 N-7 / - / - / 0,'a /oo 47 I N-7. 5a,., < 0..5 N-K : 504-E-. I -1 .-,t 73a•396 (REV. 12-82) — -- - _.- - - - .-.. - Hole No TB-5o I Page 2 of 2:' el . 1 Material Description lfdCli5 - P o e 2 Z > Dc° -) q o Color Wet-Dry en 8 u o` O L ? Consistency Jointed-Broken g $o Driving m m ¢ �Q o Z o Plasticity Angular-Rounded11111 a ►- r'-Z Resistance ¢ �e p Organic Content Drill Remarks etc. c-c; 1 o.bl I No C-S : Top- 5%Ny- C/4y /La...cr- S;/1/5t4ee I Fa.14 11.6-/8.29m SILTSTONE (ALe9 ctt oL411S-0„p) .1,4r N-8 `/- 6 - /O l o,VC /o o K9 N-B: Sil45fPne i_ra7, Fx-tre rely Sofi ov/fiber t I I /Arn;,A-f:on5 ( :tic/;neeri /S°-Zo°) I c 1o.41 it t Q: Sn.rse d s N—R f3.7?] I I I N-9 7 - 12- /8 16.f4 /Oo I i 81 N-9: Sarre as 1J-S . l'id71 I C-/D - 11.19 7R I co I C-/o : 5..•�e 0-5 N-S . I I o � i .2qI I - I .5-•7f `�-`= S - - /J ID,ab 13 s I N-/o: Sa...,r as N- e . I c C-II 11.37 9e) Rd/RI C-/l; 3;/tt'tLone u,/#';rt lenses Ire C;Kr Sa•.r35-oat, I 0) I 9r°'N, t1,iM�i IAM t';n - d (iwL/:Mrd 15°) PY-1r<NI{IY'I 4.74 I l So-c4 - vtri 5off, S/,r keHgic @ /b. 1 rrt - 92?4 N-ll II - /8 -2S I o,lS 33 �I //-/I: SaMt ks C.-it.I i o C-12. 1.22 .o 12e Q/ V C-rZ: 5-awe a5 G- 11 iJ/gt'avC/ lenses (green-qrsi Aravels /1.A7 - 2, S'/ ern) ea 4reMrlr sod+ - I 4.21 I I very 50C-/- . I I Bo-/- °-1 hole III else) 'I bags - Oen-o,ii4e avicI ----- Sealed d /oa fA A C cap . r I • -- • - - - t:' I- .v i o ss Page / of _2_ n' �r, SOILS AND GEOLOGICAL EXPLORATION LOG HIGHWAY DIVISION 11#Project G 5w o f ea a:,a1 Briciae Hole No. !P-,j o`L IHighway Ch:/ds 1e04d r ICounty C/dL4aM45 Prefix C�o2 I96y I Purpose of Work Bridle iaune4Tio✓t Jn✓eiILIR'f-/rrt _ Bridge No. 'Equipment (lI4,b:le 5 -53 I Tube Elev. I 1 'Geologist Amy Pce;ere r 'Driller Lau,nfer, Lee jRecorder c7e1.1M;so., IHole Location �' d51.v" Line,St& 14 y..Z . 3 IA. pct. Rt. J, 9,,, I Ground Elev. 33-.0 3 ,,,i Tests Drilling Method Groun,water Level "N" —Standard Penetration, No. 12 Auger Depth Date I Depth "M"—Oregon Miniature Pile. No. rL/(i 1 Casing Depth /9.8 . r2-G_ %S I cree' /Cae/ "C" —Core, Barrel Type Al Q 3 No. /3 Open Depth J "U" — Undisturbed Sample,Size No. Total Depth /9.8.1 !Date Started o 'Date Completed 1SampleDataSheetNo. Bkfm_ � Material Description m 6. > 0. J an d Color Wet•p y t j o 6- .. v 7 Consistency Jointed-Broken 7 - L d Driving el o cc r,.. m Z 171 Plasticity Angular•Rounoed ,..(2 Resistance 3¢ 6 a Organic Content Drill Remarks etc. I f I 0— 2.1/4/.17 1/L L - c-i I I0.21,n /4/ I C-/: (I.S/e.n f9C a....J Cr,aci,od )3„se Rack (7.S- 5c., i•I _ I I I I 1.s2I I I I N-1 3 - c-1 - 7 )027 60 4.. 1 N-1 :�.5;/f4_CJ&v io/'i o -r.•.,r S4.,2, ara.,nirr,rS 11�_1 s- ..cr • v,1 _Glreau S. I C- 2 0,15" /0 I C-2 : sane 43-3 N-/ 14,/a.:9.;/c.r be54/ L �rafnif/ifs,' 2.'0/- 5.18 m ,.0/L T 1 ¶78 a51 3.51 _N-2 �- y- b2 0.37 $D I i{3 /V-2- : .S'1/f w/frFce orc1ar:c.5 7 L. firAr . .. e-f. LL y2 . N 1u P twee.c ns . ve ry 5-4:-4 e IC 3 `►- c- 2 - s� . . j d C N- 2 I qsi l j N-3 �J Do 3 - 2 - c. o.3`V 7.3 I (73 N-3: ,54.,,e a5 14-.2, /.•..,er c.t=, .,, < < -� qta —,s_, ,f I C-`/ 0,3o a 5.J -742.., ( kAVELS -1 1 C-Y: 61 rnveli, 5rAy, 6�soi .�, 64r`- i Gm , 6, il i N- H i - 37- :Z7 Io,12 27 N- 9 : sa.,,e-ate C-y very Q` 7).5P 1 . C-5 c.18 12 3, C-5 : 54-r`e 5 C.-V. i 7.62 I j --6VJ N-5 I- 3 - 3 ID. /co 53 Z62:13,/!m 5/LTY- CLAY j - N-5: 5:/ -C/sr. a , AIL- CL. 7rv. ,.7Pk A?,‘\' LL = Y _ I C- to 1,19 7$ PI -/(o, mec3iurrf s'1-;4-c ro:ca c eau..t. I C- s : 5 pm e 4.5 hi-5 I 4,1Y ELI _ 1 - / - / IU•4 boo I 'f9 N-6 : srk>ne 0-5N-5. so;-- . • I I I c--67 a 1 1 � 1 I /0,47 I +I I fL(3 0-7 2 - y -,S 1O.y6 too I 157 N-7: 54-iC Gs N-c„ 54!. 4 - -- I I I I I y 734.3976(REV. 12-821 • Hole Nn 7 ' 62- Page 2 of --, cuter; - O Material Description 14 o Z m'o .a Q. o o m Color Wet•Dry . o Driving v) o % S0 O' a m N Consistency Jointed-Broken III ICI) Ct Q. m Z o Plasticity Angular-Rounded t- Z Resistance ¢ .�° c a Organic Content Drill Remarks etc. I C-.Q 10.7$I &,4' I I f C-8: - .he a5 N-s _ 1 12.14I I I I I .b,-I N-8 1/c,3•n — 6 Ia.Y4,I /04 I 75 1 N S -'/t-8:Sa.,,,e A5 N- race -1i•+e Sand »tel.cn- S4, FI I I I I I c-9 I0,34I2a I Ro 13.11-19.8r, SILT5ToNE (NOc/ene.. /nt,ds-flo e) 13.721 I I I C-9: 5;14 5 /one , 9rA,e/ 1X;11 her;s-o a1 la.cljrac.-1;0 o5S N-9 S Pii -/8 la.Vd I /o0 1 exfre r, J So4'f . I 6(o I I I C-/D I l.a/ N-5'/e-/o : Sp as C-cf . I ' 2YI I 5 I 1i,vI N-/D 7 - 9 — 13 'olio(' g� -/o : Sa..e 45 C-9 . 1 I C-// I1.13I 7c{ C- Ii : Sa.,,e cs C- 4 . I I I I 0 14.7b 1 I I I z 1 N-ll 5- 7- // Io.VGl too. 1 1221 ki-11: 5a. e a.5 �4 ua/•1-rc cP .-C;-eid-- he 3a•,ci a,,,I wcoc.). 1 C-/2- I1.o7 70 I I C-12: Sa..,, o..5 C-9. 1 ,21 I gj1 $.75- N-11 r- //- /1? 0.'4 /00 wI 07 N-1.Z:-S'a.., as C-9, L L = 5-2, P . oI I III C.- 13 1.19 7R I C-is . Sa.re as ("--9 w/trace gr.ve 1. I I 4.84 I _ I 1 I6 -74744,,. f/a/e I I Ilscd 4a4f r o� e.,-4.0i fF a«) 1 I I 5eele1 , ., Ca,-‘li C. cc? , I I I 1 • 1 1 1 = I 1 1 1 1 1 1 1 I 1 � 1 • 1 - — — - I i i 1 ,..] J O • 0 o • .. ..-.� 1 i I 1 '36-.--_-- N N F ( 1 . \ 1 1 / 0Existing Bridge 6424 I j / // -' •fI I I I ,1I • — I I�. mI/ "OW"L I I 1 I i I :� I f Test Hole TB-501 hh I I I • I I I OSW"510.0.162.75.M.1.5 m Test Hole T8-502Y I 1 ~osw Sla.0v 142J.Rf.1.9 m �� + T + - J-c - — - a Proposed Bridge 18095-{- PLAN -• 0 1 \\ '. swim woo \ 1 N g --Test Hole TB-502 2 .rest Hole TB-501 12-6-95 12-4-95 ro •0 0 - o P `Z. o 3" AC I V !? `Grovel(crushed base rock net. I 35 Grovel(crushed Bose rock fill). I. N 7, .I:. Cloy with some Silt and Gra/eh brown,medium plasticity.moist(Fill!, - Silty Cloy with some fine Sand and i 11 N / —Silt:brown.nonelastic.wet(Fill!. Grovel:brown.moist.nonelastic.(Fill!. ' 13 - 16 \ / Silt:brown.nonelastic.wet. - - Sin with tract Organics: 45, 12-4-95 - _ gray,wet.nanelostic to low plasticity. 4 --�- I.-r • Silty Grovehgray.rounded grovel, - - I li,' / 4 t Graveh gray.bosom particles to 70 mm. ii) 64 L Approximate exist%nay •, gramdllne at"OSW"$ 5, - i. {r6 - - •7 7, t 2 lt g ray, , iuly. - 2�- - - --- - ------- - - t - rr.�Clayey Sil EiL - 25 Clayey Silt:gray,medium plasticity.wet. 9 C-8 2� Teatwet Holemed TB-m501pasticit - +1 - i6'I I fore X Rec. Hardness.-I-R.�,D, _ Ir 7/450 mm C-9 I_ �- - Test Hole TB-502 .'1•32 CC10- C-10 301• it(C 0 I y�(J�ji I - I _ - -- - - --- I Core X Rea Hardness R..O.I I ill 22 23 I C- J I 8l5 I RJ 1 I I __ ..— C-71 - I .-9 11�� C-!1 _ I- r) _ - �, Ii 43' SRstoner gray.extremely soft, $illslpne:gray extremely _ I� 18 C-12 I'`(? I n I - " I Safi,trace sand,wood, t� C-12 Sandstone and gravel len3Bs. � I' S I /8 1 - - I and gravel in places. � ik 27 V -- .s` C-13 15 - — - FOUNDATION DATA Foundation data shown on this drawing Is a consoiiaotion cot IntormotIon METRIC and/orrevision In terminology tram the Sole and Geologica Exploration Logs. i�/ytlN(7�l/� Scale:1:100 The Soils ono Geological Exploration Logs used In compiling this drawing ore available upon reauest. DESIGNER, BRIDGE NO. ET fl9stondore Penetration Test. sR� OSWEGO CANAL BRIDGE REPLACEMENT z- . . �„vaWe. TOREGDN DEPARTMENT OF TRANSPORTATION OSWEGO CANAL (CHILDS ROAD)BRIDGE SECTION °F eOMO Ann Burley "' �FCHILDS ROAD _ C • Core Sample. u • Undisturbed sample. o, 18095 p GE041YDR0 SECTION CLACKAMAS COUNTY DRAWING NO. 'r-•Sea . Rock Clarity Designation. demo , - a . Elevation of groundwater measured Glen Theorem - �� L n the test nae on the data sra.a nits.be b 96`�4 IO$tkrlR-1999 FOUNDATION DATA iJ • Cr.) S S • • TUALATIN SOBBASIN FISH MANAGEMENT PLAN 411 Prepared by Tom Murtagh Vicki Niles-Raethke Robert Rohrer Mike Gray Tom Rien Jay Massey ik Oregon Department of Fish and Wildlife January 1992 • EXHIBIT 21 `'a 1 • LU 99-0069 �, 1 0! I 1111M ,111 100 WV60 : 6 6661 • l? • IeW • A private dam is operated at Balm Grove on Gales Creek, 13 miles from its confluence with the Tualatin. Originally the dam was a simple stoplog structure that backed up water to provide a recreational setting for picnicking, camping, swimming and fishing at Balm Grove Park. Without conferring with ODFW, the owners added a concrete apron in 1980, which raised the height of the dam and obstructed fish passage during low flow conditions. Railroad ties have been placed on the apron to improve passage by concentrating the spill in low water conditions. However, anglers have reported that adult salmon and steelhead are still delayed by the structure. Clear Creek, a tributary of Gales Creek (Gales Creek RM 11. 1) , has a dam owned and operated by the city of Forest Grove. A fishway was constructed by the city in 1974. An inspection in 1989 revealed that the current structure needs to be repaired as it is not allowing adequate passage (personal communication with J. Massey, ODFW, Lower Willamette District Fish Biologist) . The Bureau of Reclamation has proposed a fifth dam (at RM 65 . 5 near Gaston, Oregon or at RM 68 near Mercer Creek) on the mainstem of the Tualatin River to provide additional water and power. Power generation was reportedly not cost effective at the proposed dam (U.S. Bureau of Reclamation 1983) . Since 1983 the project has been on hold. Presently the project's feasibility is being reevaluated and power generation potential will likely be41/ considered again. The proposal does not include fish passage facilities for anadromous or resident fish. This is a natural production area for winter steelhead and coho salmon. There are no immediate plans to build this facility, however, future water needs in the subbasin may make it necessary (personal communication with J. Budolfson, U.S. Bureau of Reclamation) . Diversions and Withdrawals Oswego Lake Canal, an unscreened diversion at RM 6. 8 , diverts an average of 56 acre-feet annually. Juvenile salmonids entering Oswego Lake must exit through the Oswego Lake Dam turbines before entering the Willamette River. Also, returning adult salmonids are often attracted to Tualatin River water exiting Oswego Lake's outlet, where there is no passage (DEQ 1987) ,ii Substantial amounts of water are diverted from the Tualatin for municipal, industrial and agricultural purposes (Table 6) . Water rights presented in the table are potential amounts of water that may be withdrawn during a given year, resulting in decreased flows for fish passage and fish production. Minimum perennial streamflows established in the Tualatin subbasin are given in Table 7 . Oregon Senate Bill 140 (ORS 537 . 346 and OAR 690-77-050) will convert all minimum streamflows • to instream water rights. No appropriations of water will be granted when flows are below the levels specified, however, according to ORS 536 . 310 (12) , preference shall be given to human - 13 g1111 11►M 93a 103 Wv60 : 6 6661 ' ZZ ' ' W 404 EGON DEPARTMENT OF FISH AND WILDLIFE FAX Cover Sheet Clackamas 503)6S7-4.eo 8-FAX (503)657-2000-Otflce • j . • DATE: s/-7,/�9' - �—:4vim =!�5��.•1L� /�,'V:�Z;r C1 PAGESTO •FOLLOW: `r =t'C�- ~' --- TO: ie 6 • PHONE: • • c1��jr� isi'r{ PRONE: • SUB SECT: COMMENTS: . • • • i. 3 nin� • pu 3!13WV11IM 638 100 NV80: 6 6661 ' ZZ '.JeW • 0134 •,;.2i J -t i, 15 y.. rti .: S: u , ... _. ..t '- ,. -.. S &,:: �-a.- ". v t'+t 'r 'r" t y.r Sv !`t i, Est i �' s ,l'' 7, t '.+ W , !`4,,. f/ .F} v. �"c Fb,� - ' �' ` zl`yw,r S'I•Y�r4'R�' �r,Cv.y' ' ;'r e;� yv't� �y xr v.�in3?r'Yi<`s�.r jj�LTI.3,L,rw� S•t5• + . } �y�../��t(- y�,''j9a �� y�i R f.� ,.,j �{ k � Imp�-• ' • 17 l'� 4effi, v 1*,Cry '50 '{F3'.f� F i . l'�'s `R Y.,.r4. .a3F11K�is.1_ ,7.(:' 1r''k,1I;. b. t r4:P_ " -�'. " r�1l X.4 4i�•d'71,4�cr.`E 1"p •�f44. '��•'I,i,7,iif r �s YY '''.' ?t,.4.� c•.o r 4 _-I 7 ivy;. r�. :;ei.-Si it;la�sr ..r`: -:..,1•n: . _ 1 'v p�. v a i `f; . I t n ,, p11 t r fFnrlr INCn Lnurrinr, c F;rtlsSIOH 2 OF 1111 1 3 [Iry 01 Lnrr n;trr G0 x , 4 A RfQIICS1 FORAPPRONAl 0f A ? SO 29-J3 1 I44-LOT '.;1,IGI L-I AMI LY lll'I+I v I c hill 1 I a 5 Oil PROPERTY LOCATED AII.JAd fUT TO i FINDINGS, CONCLUSIONS (HI LIP. I`HAil, TIII T:,ALATII PI VIP j AHII PRUIR ' 6Af1U I III flr,!•1E GI) CAtli t. ) `` 7 IIATURf OF ,1f'1LICi,IIOU • • t.4 S • Thi.•i.. .t cnntr-.t.'I . ..'..• in„c.•.•,lir.; to r,-':i.•., an .dillicttion by the owners _ 9 of the suhi, Ct pro's—ft.,. lot aI'prtrv,tl ,.f ., 114-Int Sirrlle-farti ly subdivision. • 1O IifARIIiC ; �: 11 The I ,,„• r'in,1 on this it,:l ...t•. I. -I,t on :. .-i .:'•.v 13. l'I/.''I. Ai.1,t.rartric ...tore 12 made alit: vxI,il.ttti ••r,t••:•,,I .,•. tndic,,lr.t in the rinutes of that rr:••'Linn and in _ 13 theStoll t',•,+orr t t !i••f••t•.!n'I• , i ,,,•". 'ft 14 CRITERIA t _; � IS Review of su hdivisioI, I•rn,-,:e,I111•1'. is nov-•rrlt•d ,lry the Section'% of tht •:-1 a+'' � t' .4 16 Subtl.viSic:n Code fr,u:ld in I .,...C. 1.4.0I•S t11t•r.u,I I,tl.`:.i!. 40 ''t ,t 17 f INDItICS 18 I. Il.r property invt•Iv.••I I'. in the '.r,n_,•,••. .. Ilr..•:,i! inn to the Cily • f tc • (• 20 2. The afutt:•.�,,.I 1rr—i•rrl�• {}II4I44', iI f,rr- dvv,•Ini,:-..•uL lri a-v.lil.ihln to it all city , i'L " .' 21 -Vrvic., . thin III., - - •I'I i..,. ..l ..n,il.n y .. •I Iasi c%, whi4 1, will • he . -iJtL, 22 prnvitlrtl or the .ry,l,li..,nl n'.. , - ` 23 3. The af4trm:.tid t•roln•rt, if, t,ndevrlolr.•d and i - ,i i icrnt to prir:rlri.Iy vacant • . "l 24 llrctl.t•r t y Iot,ll,•41 ill County R-Iti ,,n,l R-?0 :.....••.. .. "76- 25 1,, Tl,t• nru'rr „•r str•t•.•1,. Itrv.t,.••..-,I 1,7 lh. 01.1,1it.,1111 or.: ,1.'. .;11ate It) •iCct•nipIisit 'AP . '`y. 26 11,•• iiiir;ru•,,' for It,,ltic tII(I.l,lti,. I. .,rr t,nr.i••I,'nl vilh Ihr present thinking ' . P u;c I >C; . �) 5 ►, ' ,tY, EXHIBIT 22 r-. 4";'" LU 99-0069 - , _ . ,./.• ;p..::.J,..4,4':: +%' ,' v`. 't' .r,• ' f s E.. s 1 d: r ,y�.•••, h.:r,,{pa i -S a .f r-' Y x . 4� !, -,15 tt t .:•�i{ .t y. .' 'r ."yd"r.. 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Y.t i s f r,!l)Gn•. .,t!7 ill l u.,.al! ,I, . :!I 41 t ~ r uI uo t.tlt t,niSul•� {.l i. r, .1 ,I.I', .1'.. e;Ii•!r: 1• a i . +,I1 7 cil _aJI I .I• , � y1 JIB £( - ! : • II I:•a•I:k 1 ;: . 1.:,• _ :'!".• • J.,ttt.tn4 u�.!• !,...: .1 .•�,• - .. .•. - •t, • l ! 1 . '1 ll''11 %I �J,: 3�!nJac hJe • I.t :r, • ,tl jj �.•4•: s.,n113;'Ittt, !ma, .11•U11 •,I ;1•,! • t.h.i• ,it ,:. i. ,"4 ,, j iY put Ol '' tnl!uur' y ?' uU? UI tiI (1'••).1t,II, ,Isll iru ,1,1 :l I ,. .i1 1.1 ,-, • 4l ��1t�t'tilmfn li • :r :ttl u!tlt I:a tilut l•.u,, . l '' ' :• •., I ,.\ �41 Jo Jsnup)i SlJ) lcIp,I ! lj • - r .,I'. I!" 1.1.•r1 I? ..I• 1' • 2a. 1 4 •' h11D 11 11 I IjIr1 1 : . 1I• .,•1 • ,III- l I•,• ••I J.IfU••.•J I I •A1.1.1t1u1 II Vllt1'.1' U111.,.1 1 I' tA i . . - r. � 6u1ne; �yl u1 1lnt. ).f I1I': : l 1 ' uI u,rl .Ir 1 ,t I ) . t a 1� — • .ti. _ 'i • :t• r t f.; ' 1 err it r r' 1D • J 1 3�• r •f� • f• • 1 a p'l r ". ,•� 'Y'fF" °3 i .i...: 4t,.. .,�t � ki. 4 ,•,',.• - f • r ' p ', , • A T_ ' 1 2. Cott,,trllrtinn tf the Child•. Road at.cns, he .1.. shownon Exhibit "t", with r•� ,, y .r.• - 2 adequate sight distance approved by the City Engineer. - . 3 3. Road of Child% Rro to afull 211•font. rural standard frith gravel •ti• „ ,r • ..i , .} •tutut,t,•r • ;aI1l�IrlJr.t by the City fngir ..•n• r. ...} 5 It. Cnrtstruition id 'Pi-loot street•. with mountable curbs and no sitlt•w.tlk;, on Gt ln' tt:o r.0 t'•-.t. - .." . F 1 i ,, ititit:ltlri;_ ttf •.tt?rit drainage !„ ;II, iu.11•� River, with nil separation, ,n � � :/ !� 7 �• l tin ki 1 vo • / 8 ,s +'.tttstt•r .u+ .•,,t.aht•- to th,• fit , f.r.Iin. rr. y ,1 ''• 9 6. (�tur,lt'uctit>ss id aon !+-itt[h ;•'„tr•r line in Chi1,15 Road betweenbetweenBryant Road and / • ill 10 the ,aoaI . II ¢, 11 7. Cun•.;ttlt•tI trt t•t tttc,••..,try olf-`.it.• ..Ytitary ',,'irrr fjcilitit". .iccordin.l to •� - 1 12 t:ion,. . htr,cv, .! it•: I:. City Ett,tics .•r. ' 1 . 13 8. ,1t,t.lrtv.tl rot lot width :.1ri.U,r. . torl,•1•. I:-10, 70-7'. 2`t-31. and ''2 ,. 11 R.•iu.ti..rt of trunl-,.tr.l .. .•'tl'.ac .,, ut• lt.t', .'0-72, 30 and ?1 to 15 fet I r $. 15 IC. Incr.la%e of Trim-:.trd •.etb,v_t.•. on all othyr lutti to /5 feet. 16 II. Approval by Il;.• City Inrlinrt•r of no erosion-control program for kiovf•loptnent • ?:: 17 ,.ry of Ito. pruicc! : 18 IT IS lLtiCO that I:te i'I.snnino C,,r:::.I' iurr h.•teb, I Ct .:Taro ,t,tltroval of the r,'•i ' 19 prttl+o.ed River font Scal.divi•.i.,n on su•,,;•••:l . I s adoption yt he _ Council , u i: - 20 subject to the above condi l icon• . . - u. 21 DATCO this I I ill day ttt it.-c. 1u•1 , '1. .• , t 22 ,, ,Ir ri 1 I % [ ': , . •• ,kph Jn'.t i Ir• I,• 'r•, thnirnt,n t+t' u, , 24 PI it Commi".ion i ' ' (ftjaL\ elk E.. • ` • •.�, - _ 7.,1.,,•:6444tmJ,Qt.' s .;: t ,• :'.r ^ N.24a ` n :.__.- I v:fi p - � 1/ELO Foe C. A/JGLE oT r4cwr. . 'mo t. S.x GS.N�.\\.»G fA aCD "/,R.INIGGrr'1D0rV) za' "- .;I •} :{y - .aOVY�....�+aGe¢v�4R Cl.CEL1_A'7. 9' 'Iv S4T0 ¢ y� 1aI tl1 - - _ RIE, .GON _ ;, :: a f.,9 rA� s5 ► ' j' • y 979 ` • ' , r+.Mr4Z, ,AI � �, OSWEGO �4 4 • I �+s r. r,.Ia•' ro,or�r ;/osad ? ' - _ 'Ai . (: 'w 1. . — } k' 7 i • a :s r1 ,L_ ,b 4a OFSl.: . .••ie IN •••••.•• ,: r + , •, • • O4 3 ,LAWE dS 4119A .41fSNTS me LA ••• . '".L: - : &... r -. .i , .r..ra. V •w"r �V37 la • • .01•CY , - as 1Cie P5.. i trz' ;•.a ♦ •: 1 '$W5J//Y Z __ "$ .•. . ' +� Qom`mot• �1 1 11083i n,as[r' i ,Y •---c --4,-" s1-� • �CIONf t .iA00tr'' A.LL'1 8 yfuz '-.4Gl'AMAS CLWTY, •• • • 1" rr + !1 ,4 &V4514/AKs7Li4/ coo `' :a# a•q s �- 'NE�('X.4A(4S C4Z1N7'r r-1 t, t - M! .`+g%.. . , , B )'5 .CCNO CC r )• � ... . • ti i• .4 ., • 'J ° ' . �. Ufa , T7 y ;'r • }9•N1- d• w 4w A,iE 1` ``r • I 6 aR GALKIN/tF0 i 3I� r •. *� cold ✓ • � i ct G4L R7Y,t/T U'- VI'S!A r.JOV'' :.- ' r.7 t7A��M '' `g VT/MV/A/G 5 C10'29'24'_'1 /='? g - ''. 'f • ',,+s i /0.a9 0'E - C>F THE LFFT A4/VA, Cic 7'4V,a _ d INLLc-R5 G� IWE' LEFT G�4NK_ "'0 �� t' r 1 >.alo rr7.33 7'4' 9l39D FEET 70,diAF s-:"'•?' 3`• 1. 1' y ,,,frf` t r 7L7 4N /[pn/ QEd IK: 'f _ -4'.Y -pN05 d ;.4_e: TWEMCE N 7..3-..10'42"LY" .. `- �•; et..-!,:. - y..,•s a >,! - 10 p 5 N2.2'97'/8E 8a'9la0 �•• - p ,4•S99o'� EN/4•59'45'S 2'7X./O FiEiT. . Ps Iv/P lh, o5eo• , y M ... ,@Fd4Ae; TNE/VCE (LW- ..AI7w.S9'54'E 0. , --� i, i 12 Y // a TE.e UNC CW CN/LOS ,f040 33 y• Ip,pp9d 100004' 't 4t�/ /,may(A'LIO(Nrle.eOW - - d F is4. - yj,N3 is yJ TAIRWCE 5GZ"29'24 E" `� er3r of oo ea V6, CGW7ii4/N/NG ?O-39/ nil f� ,p fir" .5 Do•Si SZiR • to /N CZ=ff4,d. ALL y � .r 3 � FPS 73"l'RV//vGly IRON A?ERA.Q - , /3 ` . /.7 I. /4 /5 . g /b o n SENT4T, 41 OF 7.�/E ,..ma r0 T9'!r. RcLiOa° r'o•axwoV, •RC A I ' .45 44,7E0. • y *4 rj , �' A/ c2 TN/5 PLAT '0 S0 , 'o,545 0, ' a fy. `*ms `'• 1• eo.� r Sc7 -�. • N 7 . w ,7.9 ...e/✓E2 .P1.IV" „ ,Mn 'r ya q•1r .'s �m"4 '�oa`sM11e)rv'aC a S,irr `�.fii�ew 5FFC7PE �I•ro'+#ewe J 1n u =. I atoo M.4Y ,/c+f Fa R'/R. 1 / 34 • Y . F • N /YC4°/9'/3-F /OM 8 , /0•7 ' ' Z d�Y ZS tie 17 8 IC FOR $TQ FR yt'G(� ��-so-�W /P4f7 o- N°$ /O.21r4° 414 10.092 a. R TEOF 5,zyp'/7GOr5 k8 t9.1ss OP1`C!W I GO s z Alj�3 33 ; 3b z NDY90. E it I //3Q7 Ear'IeES I ' list, A0, S'' 0z5 0- n J .4 . o Z7 +b 6 24 • ' 1 ' • l ,� ooto. Mfg V.r5Sa ao,,i a T ', // ¢8� Pt W ! /zZ • ' ,y2.05 \ yM , I•) p573 ._ 3'- N.-.30'3i/ ' 98r30•Y•- V v ? '/ 32 /4004ri ZO K ., f „j CO t�' a s le• z ZB p 23 7A D t` (f 3W-r QsS i .,, .oOjQo• • 6 %r90o' • `- 19 M' tr V uy r K'.* v /gZ• III =s Se,racr s P .s'47 E \ C ,V 11? w,.r7 .V 9 T,... r sq \� • / is Qs- S { ZZ _ yv.: • + A'Av F� ��� \3 ,2.xra' ..Ng n. :- 'F 21O�, �tIV', +J .a• .2.u•7o• \'•. ? _ h - - _ _ -_ Q p •wr-"31K i-2 - - /b3Lb—� 'w�`� g y 5 . 33 3-— 0 -Q 9� , t + 43 L` .A` / •90 a .. „a.. N DOS 501 3�"E 5 _s. o i EDGE E5 rIT 4, ,4A n / i i 4// 4 \/ • I IN • P ,rk C.,Div A II Z V b 4��y J ."/ LOT 45 1 io ;1) ••0V c'/' 3p9.(v40a' I Im q ` / Iry / i 1 4 N - 1.111 c� / AO.1-G1I P r ~ 3.-�• ' PO' •/.e 5P9 5l'24.E N00'39'4/-E P53 1 74- W/[ASMc c ifl R-D7 "I 1,--iz:;„:1,,, Atr ti U -`fic`�o G9 • / � r/.fir - 'V�'"-3'4.2'W P77.So - 't SD5'al.5n' p�/,f/ \. co V6'/.Q W :A,WELL CAP�•\ .c0•3"s / W/ %-t t L CAP k 1 vE 12 W/CASW Li G4P F0 2-61 P EXHIBIT 23 03'27 00-E rr.07 LU 99-0069 v `� 1Q . !I o_ 15 1 el o 0 G o ` 462.44 �` `` 784.51 - A ° M r' ! 324,59 230.oj P30.0 O A f C r 3 �`I 32 .� �`J ® o t o 0 2 M � ( , m c � �/ O roe.47 ,4 • 46S,3o t 1 _ 274.s/ oti --1 28R¢y 30. .0e 0.0 Q0 � �w � � ,� N e � 0-- e� S� 4113 ". 33 a tV a �� r80.o f G a Z m O o • 0 10 oils 314.►5 i 237.0 - 210.0 L.3o.o j 138.23 ,A p 0 0 1 134.45 . 1.. 217.0 Ic.ao 100.0 /00.0 /00.0 r. -" . r 0 y ': "4or ..72E '� 20 10 0 0 4 �d1 0 k � ci o • • 18acitW� '�7 a At to. e 43 ° a ise.07 li 6-1.,;,,s1 v..90 e ) a ,/ i r I I IZ ti 4,I - C ; 0 A. • o o I� o \l‘i ® oc .1 N �0 tam 1 fR 3 !q0.?'R 197.E ,1 , .ar. +- • • , •-•.• .0 , rlr 177.41 L. _ -. _ _ .42* - - f- - 338_38_ _ -200.0 -# CI,/LOS_ A ,_ - - - . 5 0.9s -y' _ _ -- 5.� 180.23 r 90.23 2/3.44 3 7; i �. .9.,389� r✓ N. 89e 3�2'E. l✓,8G?24 f _. V ,Isl kJ CO n. 05 ti e N O N. b c1' O , O ® ; t.ii l �D 7 � � a i�, n1- a' �' `� /1�o/�-,' /i-on pipe _s•�•f v// /c f c .1 ,I1i leo.o 180.o 2E17.95 till ' >' �47.�5 .0Q� 4, ~ c I N ,:, :, . fy 57_5.92r 1:� ri fl 0 e, A / iti ,I/ 474"?. t O80.0 8v.a 22e•31 , f' • ,r 0. /i/ t © Qh 4i 0 co, / , d Pi � N M f2� • EXHIBIT 24 -,`3 M LU 99-0069 .