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11-102692
4CITY OF §-� Federal August 25, 2011 Ryan Flynn Tacoma Water 3628 South 35"' Street Tacoma, WA 98409 CITY HALL 33325 8th Avenue South y Mailing Address: PO Box 9718 Federal Way, WA 98063-9718 (253) 835-7000 www.cityoffederalway.com RE: File #11-102692-00-AD; CRITICAL AREA INTRUSION RESPONSE LETTER Palisades III Water Main Project, Federal Way Dear Mr. Flynn: The City of Federal Way's Community and Economic Development Department has completed the technical review of your request to intrude into critical area setbacks for the purposes of installation of a new water main and associated improvements in the Dumas Heights neighborhood. The project proposal is to replace 2,500 linear feet of existing asbestos cement water main with new ductile iron pipes along 44"' Avenue SW and SW 307� Street and to cross through the Palisades Retreat Center connecting to the existing water main within the Retreat Center. Improvements would be located along the public right-of-way, beneath the existing road surface or along the shoulder of the existing road. A portion of the proposed improvements intrude within a geographically hazardous area, stream setback, and wetland buffer. This project has been reviewed under State Environmental Policy Act (SEPA). Tacoma Water was the lead agency and a Determination of Nonsignificance was issued for this project on July 5, 2011. WETLAND BUFFER AND STREAM SETBACK Per Federal Way Revised Code (FWRC) 19.154.040(3), and 19.165.070(1), the Director of Community and Economic Development may permit the placement of an essential public facility, public utility, or public improvements in a regulated wetland buffer and stream setback, if it is determined that the line or improvement must traverse the buffer because no feasible or alternative location exists based on an analysis of technology and system efficiency. The specific location and extent of the intrusion into the buffer must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility. Upon review of your July 8, 2011, submittal of a project narrative and site plan, along with a wetland report prepared by Landau Associates, the City of Federal Way has concluded that no other feasible/alternative location exists based on the analysis of technology and system efficiency. The encroachments into the Category H wetland buffer and stream setback takes place beneath the existing paved surface at 44'h Avenue SW, with the paved surface being restored after the new water main is installed. Furthermore, the water main will be installed by open trench excavation, which protects the existing culverts between the wetland and the stream. GEOLOGICALLY HAZARDOUS AREAS According to the City's Critical Areas map, the water main improvements are also within a geologically hazardous area. Pursuant to FWRC 19.160.010(2), the Director of Community and Economic Development is authorized to grant approval of intrusion into such areas if the following two criteria are x, Mr. Flynn August 25, 2011 Page 2 met: (1) no reasonable alternative exists, and (2) the development activity or land surface modification will not lead to or create any increased slide, seismic, or erosion hazard. No reasonable alternative exists as the proposed water main replacement is necessary to preempt any failure in the existing asbestos cement water main. The water main provides water used for potable water, fire suppression, and fire hydrants, and the route proposed will have minimal impacts to the wetland buffer, vegetation, and stream setback areas. After reviewing the Geotechnical Report, prepared by Landau Associates, potential impacts will be mitigated by installing trench dams and using erosion control methods outlined in the geotechnical report. FISH AND WILDLIFE HABITAT CONSERVATION AREAS The applicant has stated in the submitted environmental checklist that there are known bald eagles near the site, which are a state sensitive species. However, after reviewing the City's Critical Areas map, there is no evidence of eagle nests near the site and erosion control best management practices will be used to mitigate any potential impacts to wildlife. CLOSING As such, the proposed Palisades III Water Main Replacement Project improvements are hereby authorized to intrude into the regulated wetland buffer, stream setback, and geologically hazardous area. This project has been reviewed for compliance with the FWCP, pertinent zoning regulations, and all other applicable City regulations. This approval shall not waive compliance with future City of Federal Way codes, policies, and standards relating to this decision. A City of Federal Way right-of-way permit is needed for this project. Please contact Street Systems Engineering Technician Kathy Messinger at 253- 835-2725 for information regarding right-of-way permits. If you have any questions regarding this decision, please contact Becky Chapin at 253-835-2641, or Rebecca.Chapin@cityoffederalway.com. Sincerely, Isaac Conlen Planning Division Manager for Patrick Doherty, Director enc: Approved Site Plan c: Kathy Messinger, Engineering Technician 11-102692 Doc, I.D. 58401 CITY OF Federal Way December 22, 2011 CITY HALL 33325 8th Avenue South Federal Way, WA 98003-6325 (253) 835-7000 www.cifyoffederalway.com Ryan Flynn via email: rflynn@cityoftacoma.org Tacoma Water 3628 South 35" Street Tacoma, WA 98409 RE: File #11-104740-00-AD; RESPONSE TO INQUIRY Tacoma Water Water Main Replacement, Federal Way Dear Mr. Flynn: The Department of Community and Economic Development is in receipt of your recent inquiry regarding regulatory review of proposed water main improvements in the residential neighborhood north of Lakota Creek — Lakehaven Treatment Plant. It appears portions of the improvements may be within environmentally sensitive areas or their associated buffers as identified on the city's critical areas map. Those areas have been identified as geologically hazardous areas and stream setbacks. Please find the following itemized list of city review requirements for each of the referenced areas. GEOLOGICALLY HAZARDOUS AREAS It appears the proposed improvements may be on or within 25 feet of landslide hazard and erosion hazard areas. Each of these areas is regulated under the umbrella of geologically hazardous areas pursuant to the city's Critical Areas Ordinance (CAO). The Director of Community and Economic Development is authorized to grant approval of intrusions into such areas pursuant to Federal Way Revised Code (FWRC) 19.160.010 if the following two criteria can be met: (1) no reasonable alternative exists; and (2) the development activity or land surface modification will not lead to or create any increased slide, seismic, or erosion hazard. The applicant is required to provide evidence the two criteria can be satisfied by submitting a soils report prepared by a professional geotechnical engineer. The report should describe how the improvements will impact the area and adjacent private property by detailing: slope stability, landslide hazard and sloughing; seismic hazards; groundwater; seeps, springs and other surface waters; and existing vegetation. The report should also provide recommendations for mitigating any identified impacts with supporting documents addressing the two intrusion criteria referenced above. The required soils report information may be found in its entirety at FWRC 19.160.010(3). STREAMS Intrusion into a major stream setback (100 feet) for essential public facilities, such as water infrastructure improvements, is permitted with approval from the Director of Community and Economic Development Services. FWRC 19.165.070(1) allows such intrusions if. (1) the line or improvement must traverse the setback area because no feasible alternative location exists based on an analysis of technology and system efficiency; and (2) the specific location and extent of the intrusion into the setback area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility. Please provide written responses addressing these criteria. Mr.,Plynn December 22, 2011 Page 2 STATE ENVIRONMENTAL POLICY ACT (SEPA) Any improvements within critical areas will trigger environmental review under State Environmental Policy Act (SEPA) policies adopted by the city. The work proposed within the geologically hazardous area or stream setback is not exempt from SEPA review. A completed environmental checklist (enclosed) must be submitted. The Director of Community and Economic Development will issue an environmental decision on the proposed improvements. A 14-day comment period followed by a 14-day appeal period follows the environmental determination. On past projects, Tacoma Water has been lead agency on issuing SEPA related documents. If the SEPA determination will be issued prior to submitting requests for intrusions into critical areas, please include detailed site plans and associated environmental constraints with the environmental checklist to be forwarded to the city. This will assist city staff in reviewing and commenting on SEPA related documents. The city is currently in the process of updating SEPA requirements in a critical area. The proposed code amendment would make all SEPA exemptions applicable to projects located in critical areas (wetlands and their buffers, stream buffers, steep slopes, etc.). As long as the water main lines are eight inches or less in diameter the replacement project would be exempt from SEPA review. If approved, the new code would be adopted mid January. PROJECT REVIEW No official land use application is required for the Administrative Decision approval for essential public facilities to intrude into a geologically hazardous area and stream setback area. A detailed narrative addressing the applicable criteria and associated environmental study will be used for project evaluation and the administrative decision. CLOSING If you have any questions regarding this letter please contact me at 253-835-2641 or rebecca.chapin@cityoffederalway.com. Additionally, please feel free to direct any questions you may have when completing the environmental checklist associated with your project. Sincerely, Becky Chapin Assistant Planner enc: Master Land Use Application SEPA checklist 11-104740 Doc. I.D. 59819 3628 South 35th Street RECEIVED BY COMMUNITY DEVELOPMENT DEPARTMENT TACOMA WATER July 5, 2011 Tacoma, Washington 98409-3192 TACOMA PUBLIC UTILITIES Mr. Patrick Doherty Director of Community and Economic Development City of Federal Way, City Hall 33325 8th Avenue South P.O. Box 9718 Federal Way, WA 98063-9718 RE: City of Tacoma, Tacoma Public Utilities, Tacoma Water Palisades III Water Main Project Replacement Project Federal Way File No. 10-105011-00 AD Dear Mr. Doherty: JUL 0 8 2011 The City of Tacoma, Tacoma Public Utilities, Tacoma Water, hereinafter referred to collectively as "Tacoma Water," is proposing to replace 3,500 If of 4" and 6" asbestos cement water main located in the residential neighborhood east of the Palisades Retreat Center. In order to proceed with construction of the new water main, Tacoma Water is requesting administrative approval for the following: Intrusion into a stream buffer ■ Intrusion into a wetland buffer ■ Intrusion into a geologically hazardous area The work is proposed at this time so as to replace the existing water main in a planned manner. Approximately 2,500 If of the existing asbestos cement water main is located in a heavily vegetated area along the eastern property line of the Palisades Retreat Center. Due to its location, access to the water main by Tacoma Water personnel during a main failure is very limited. Replacing this main in a planned manner will avoid potential main failures that could damage private property and nearby critical areas. The following information has been provided for your review: ■ Stream buffer intrusion request ■ Wetland buffer intrusion request ■ Wetland report by Landau Associates ■ Geologically Hazardous Area intrusion request • Geotechnical report by Landau Associates ■ Plan set of MRP2009-33 Palisades III Please feel free to contact Grant Whitley at (253) 502-8746, or myself at (253) 396-3111 shou d u have any questions regarding the project. r�pa� ma ater istribution Engineering IFS VEO BY COMMUNITY DEVELOPMENT Tftwo,14-4 TACOMA WATER July 5, 2011 3628 South 35th Street Tacoma, Washington 98409-3192 TACOMA PUBLIC UTILITIES Mr. Patrick Doherty Director of Community and Economic Development City of Federal Way, City Hall 33325 8th Avenue South P.O. Box 9718 Federal Way, WA 98063-9718 RE: City of Tacoma, Tacoma Public Utilities, Tacoma Water Palisades III Water Main Project Replacement Project Federal Way File No. 10-105011-00 AD Dear Mr. Doherty: JUL 0 8 2011 The City of Tacoma, Tacoma Public Utilities, Tacoma Water, hereinafter referred to collectively as "Tacoma Water," pursuant to FWRC 19.165.070, requests administrative approval of the above -referenced Project intrusion into a stream buffer. Contacts: Ryan Flynn, P.E., Tacoma Water 3628 South 35th Street Tacoma WA 98409 (253) 396-3111 1. Tacoma Water Palisades III project summary: Tacoma Water's main replacement project MRP2009-33 Palisades III, proposes to replace approximately 3,500 linear feet of 4-inch and 6-inch asbestos cement water main located in the residential neighborhood east of the Palisades Retreat Center. The existing asbestos cement water main was acquired by Tacoma Water from Water District 106. Due to the lack of accurate records, the exact date of installation is unknown; however, based upon the age of the neighboring residences, the date of installation is estimated to have been between 1940 and 1950. As the existing asbestos cement water main is nearing the end of its design life, Tacoma Water desires to replace the water main in a planned manner rather than responding to an increasing number of main failures as the main deteriorates with age. Of concern is the fact that any failure would likely result in a large quantity of water flowing down to the single family dwellings and environmentally sensitive areas down grade. Approximately 2,500 linear feet of the existing water main is located in the forested portion of the Palisades Retreat Center. Due to its location, vehicular access to the existing water main is extremely limited should Tacoma Water require access to the main to make repairs in the event of a failure. As stated above, a delay in obtaining access to a portion of the main in the event of a main failure could result in significant damage to residences and the environment due to soil erosion into the nearby wetland. The proposed new water main would be located in 44th Avenue SW and SW 307th Street and cross through the Palisades Retreat Center from SW 307th Street and, would connect to the existing water main within the Retreat Center. Though it is possible to construct the new main in close proximity to the existing water main, doing so would require the removal of numerous mature trees and vegetation, including trees and vegetation within the wetland buffer. By contrast, the majority of the proposed new main alignment would be beneath the existing road surface or along the shoulder of the existing roads. This will provide easy access to the proposed water main and allow Tacoma Water to provide reliable service to its customers. Replacing the asbestos cement water main with new ductile iron pipe in a planned manner will minimize service interruptions to customers and avert potential property and environmental damage resulting from water main failures. 2. The permitted intrusion into stream setbacks under FWRC 19.165.070: FWRC 19.165.070 in pertinent part reads as follows: 19.165.070 Intrusion into setbacks. (1) Essential public facilities, public utilities and other public improvements. The director of community development may permit the placement of an essential public facility, public utility or other public improvements in a setback from a stream if he or she determines that the line or improvement must traverse the setback area because no feasible alternative location exists based on an analysis of technology and system efficiency. The specific location and extent of the intrusion into the setback area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility. The proposed Project is for an essential public facility by a public utility, specifically to provide water service to the residents of the City of Federal Way, including a hydrant for fire suppression. There is no feasible alternative location for which to locate the proposed water main. The portion of the new water main within the stream setbacks will be located beneath the existing paved surface of 44th Avenue SW, with the paved surface of 44th Avenue SW being restored to its preconstruction condition in accordance with the City of Federal Way Right of Way permit. Furthermore, the proposed water main will be installed by open trench excavation, this method of construction will allow Tacoma Water to expose and protect the existing culverts between the wetland and the stream ensuring the City of Federal Way's infrastructure will be unaffected by the proposed project. 3. Conclusion: Because Tacoma Water's Project is for the construction of an essential public facility with no feasible alternative location for the facility and that construction would have minimal impacts to the stream buffer with no impacts to a stream, Tacoma Water respectfully urges that its minimal intrusion into the stream buffer be approved. Dated this !:�day of July, 2011. �� 3628 South 35th Street Tacoma, Washington 98409-3192 01 TACOMA WATER TACOMA PUBLIC UTILITIES November 23, 2011 Isaac Conlen, Planning Manager Community and Economic Development Dept., Permit Counter City of Federal Way 33325 81h Avenue South Federal Way, WA 98003 Re: Request for regulatory guidance Dear Mr. Conlen, CITY OF FEDERAL WAY CDS In 2012, Tacoma Water will begin developing plans for the replacement of water mains in the residential neighborhood north of the Lakota Creek - Lakehaven Treatment Plant in the City of Federal Way (see attached plan sheet). As part of the project Tacoma Water will install approximately 5,500 linear feet of ductile iron pipe, replacing and removing the existing asbestos -cement water mains located within the City of Federal Way right of way. In order to maintain the project schedule, Tacoma Water desires to submit all required critical areas report information as part of our right of way permit submittal. To ensure all necessary information is submitted, Tacoma Water requests a written response with guidance as to the critical areas regulations applicable to our project. Thank you in advance for your assistance. Please feel free to contact me at (253) 396-3111 or via email at rflynn a citxoftacoma.org should you have any questions regarding the regulatory guidance request. ineermg CITY OF FEDERAL WAY IF-Y.H)Urr A. LANDAU ASSOCIATES June 8, 2011 Tacoma Public Utilities Water Distribution Engineering 3628 South 35th Street Tacoma, Washington 98409-3192 Attn: Mr. Ryan Flynn, P.E. RE: GEOTECHNICAL REPORT PALISADES III WATER MAIN REPLACEMENT PROJECT PROJECT 2009-33 FEDERAL WAY, WASHINGTON Dear Mr. Flynn: This letter report presents Landau Associates' geotechnical engineering conclusions and recommendations regarding geologic hazards in the vicinity of the proposed Palisades III Water Main Replacement project in Federal Way, Washington. The purpose of our services was to complete a field reconnaissance along the proposed alignment of the replacement water main and surrounding area and prepare and submit a geotechnical report meeting the requirements of Section 19.160.010(3) of the Federal Way Revised Code (FWRC). The general project location is shown on the Vicinity Map (Figure 1). Figure 2 shows the project layout. PROJECT BACKGROUND We understand that Tacoma Water plans to replace the existing asbestos cement (AC) waterline in the Palisades area with new 4, 6, and 8 inch Ductile Iron Special Class 52 pipe. The project extends from about 450 feet (ft) north of the intersection of 313th Street SW and 440' Avenue SW along 44t1i Avenue SW, 308t" Street SW, 43rd Avenue SW, and 3076' Street SW to the west end of SW 307t" Street. The pipeline then traverses westward through an undeveloped area to the Palisades Retreat Center. The project also includes replacement of the existing AC waterline in 310t1i Street SW, west from 44t" Avenue SW; in a private road off of 44"' Avenue SW; and in 39th Avenue SW, west from SW Dash Point Road. With the exception of the portion of the new waterline from the west end of 307th Street SW to the Palisades Retreat Center, the new waterline will be within existing roadways. We understand that the City of Federal Way has identified that portions of the new waterline may lie within 25 ft of a landslide hazard and/or erosion hazard area. According to Section 19.160.010(3) of ENVIRONMENTAL I GEOTECHNICAL I NATURAL RESOURCES 950 Pacific Avenue, Suite 515 • Tacoma, WA 98402 - (253) 926-2493 • fax (253) 926-2531 • www.landauinc.com SEATTLE - SPOKANE • TACOMA • PORTLAND the FWRC, soils report is required if the proposed improvement is within 25 ft of a landslide hazard and/or erosion hazard area SCOPE OF SERVICES Landau Associates completed the following scope of services for this project: • Reviewed readily available geologic information in the project vicinity. Completed a visual geologic reconnaissance of the proposed waterline alignment to document existing conditions. Prepared and submitted this Geological Assessment in accordance with the requirements of Section 19.160.010(3) of the FWRC. EXISTING CONDITIONS The following provides a discussion of the general surface and subsurface conditions observed along the alignment of the proposed water pipelines at the time of our investigation. Interpretations of the site conditions are based on the results of our review of available infonnation and site reconnaissance. Site Reconnaissance On February 8, 2011, a representative of Landau Associates completed a site visit to observe existing conditions as they relate to landslide and erosion hazard. The following summarizes conditions observed during our site visit. From about 450 ft north of the intersection of 313"' Street SW and 4401 Avenue SW, 44"' Avenue SW consists of a narrow asphalt -paved roadway with narrow unimproved shoulders. The road grade slopes downward at about 5 to 7 percent to where 44t" Avenue SW becomes 3080' Street SW. 308'11 Street and 43`d Avenue SW consists of narrow asphalt -paved roadways with narrow unimproved shoulders. The road grade slopes upward at about 6 to 7 percent to the intersection of 307t" Street SW. Along 4401 Avenue SW, 308"' Street SW and 43`d Avenue SW, the topography along both sides of the roadway is relatively flat -lying. Residential properties are located along both sides of the roadway. A pond is located along the western side of 440' Avenue SW, south of where 44"' Avenue SW becomes 3080' Street SW. West from the intersection with 43`d Avenue SW, 307"' Street SW consists of a narrow, asphalt - paved roadway with narrow unimproved shoulders. The roadway crosses a relatively flat -lying area for the first 300 ft. The road grade slope upward at about 3 percent through this area. The roadway then traverses across and up a generally southeast facing slope with gradients as steep as 25 to 30 percent. The road grade is as steep as about 20 percent before flattening to about 10 percent at the western end of the roadway. Residential properties are located along both sides of the roadway. 618/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment_revl.docx LANDAU ASSOCIATES 2 From the west end of 307"' Street SW to the tie in on the access road to the Palisades Retreat Center, the waterline traverses across and up a moderately steep southeast facing slope at about a 5 percent slope. The overall slope has grades of about 20 to 25 percent. The area is undeveloped and forested with a mixture of deciduous and conifer tress with an underbrush typical of Western Washington. 39t" Avenue SW consists of an asphalt -paved roadway with concrete curb and gutters along both sides of the roadway. From SW Dash Point Road to the north end of 39t" Avenue SW, the road extends down a generally northwest facing slope. The roadway grade slopes downward at about 8 to 10 percent. The topography along both sides of the roadway generally slopes downward to the northwest. Residential properties are located along both sides of the roadway. Soil Conditions Our understanding of soil conditions in the project area is based on a review of readily available geological information the site. According to the Troost et al. (in review), the surficial geology over the majority of the project vicinity is mapped as Vashon advance outwash. Vashon glacial till is mapped in the vicinity of the intersection of 44"' Avenue SW and 313"' Street SW. Vashon advance outwash is generally described as consisting of stratified deposits of sand and gravel, locally containing silt and clay. The unit is generally dense to very dense, exhibits moderate to high shear strength, and has moderate to high permeability depending on silt content and density. Vashon glacial till is generally described as a heterogeneous, non -sorted mixture of subrounded boulders, cobbles, gravel, and sand in a matrix of silt and clay. The heterogeneous nature of the till is a result of it being mixed and transported before being deposited, overridden, and compacted by the weight of an advancing glacier. Glacial till typically exhibits low permeability and high shear strength. The soil observed at and in the vicinity of the site is generally consistent with the mapped geology. The United States Department of Agriculture (USDA), National Resources Conservation Service (USDA 2011) has mapped the surficial soil within 50 ft of the pipeline route that follows 44"' Avenue SW, 308th Street SW, 43rd Avenue SW, 307t" Street SW and through the undeveloped area from the west end of 307'11 Street SW to the Palisades Retreat Center entry road as Alderwood gravelly sandy loam, 6 to 15 percent slopes (AgQ. The surficial soil along the pipeline route that follows 39"' Avenue SW has been mapped as Ragnar fine sandy loam, 15 to 25 percent slopes (RgD). Both these soil types are formed by weathering of the underlying glacially -consolidated parent soil. Groundwater and Surface Water At the time of our February 8, 2011 site visit, no standing water was observed along the pipe route with the exception of the pond located on the west side of 44"' Avenue SW south of where 44t" 6/8111 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment_revl.docx LANDAU ASSOCIATES 3 Avenue SW becomes 308"' Street SW. Surface water runoff from 44"' Avenue SW, 308t" Street SW, 43`" Avenue SW, and 3070' Street SW drains onto the shoulders and into the vegetation along both sides of the roadway. Stormwater runoff from 390' Avenue SW is collected by a series of catch basins along the curb. GEOTECHNICAL CONCLUSIONS AND RECOMMENDATIONS Geologic Hazard Areas The following sections provide geotechnical conclusions and recommendations regarding the geologic hazards within the vicinity of the project area. Erosion Hazard Areas As defined in Section 19.05.070 of the FWRC, erosion hazard areas are those areas having a severe to very severe erosion hazard due to natural agents such as wind, rain, splash, frost action or stream flow. The surficial soil along the pipeline route has been classified as Alderwood gravelly sandy loam, 6 to 15 percent slopes (AgC) and Ragnar fine sandy loam, 15 to 25 percent slopes (RgD) (USDA 2011). When disturbed, the Alderwood gravelly sandy login, 6 to 15 percent slopes (AgC) has a moderate erosion hazard (USDA 1973). Therefore, the pipeline route along 44t" Avenue SW, 308t" Street SW, 43`d Avenue SW, 307"' Street SW and through the undeveloped area from the west end of 307"' Street SW to the Palisades Retreat Center entry road would not be classified as an erosion hazard area. The Ragnar fine sandy loam, 15 to 25 percent slopes (RgD) has a severe erosion hazard when disturbed (USDA 1973). Therefore, the pipeline route along 39t" Avenue SW would be classified as an erosion hazard area. Landslide Hazard Areas Section 19.05.070 of the FWRC defines landslide hazard areas as those areas potentially subject to episodic downslope movement of a mass of soil or rock including, but not limited to, the following areas: (a) Any area with a combination of. (i) Slopes greater than 15 percent; (ii) Permeable sediment, predominately sand and gravel, overlying relatively impermeable sediment or bedrock, typically silt and clay; and (iii) Springs or groundwater seepage. (b) Any area which has shown movement during the Holocene epoch, from 10,000 years ago to the present, or which is underlain by mass wastage debris of that epoch. (c) Any area potentially unstable as a result of rapid stream incision, stream bank erosion or undercutting by wave action. 6/8/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment rev1.docx LANDAU ASSOCIATES 4 (d) Any area located in a ravine or on an active alluvial fan, presently or potentially subject to inundation by debris flows or flooding. (e) Those areas identified by the United States Department of Agriculture Soil Conservation Service as having a severe limitation for building site development. (f) Those areas snapped as Class U (unstable), UOS (unstable old slides), and URS (unstable recent slides) by the Department of Ecology. (g) Slopes having gradients greater than 80 percent subject to rock fall during seismic shaking. We did not observe slopes within 50 ft of the pipe alignment that are steeper than 15 percent with penneable soil over silt or clay and/or with springs or ground seepage (criteria a). There are no snapped or visual indications of ancient landslides or past ground movements that have occurred within the last 10,000 years within 250 ft of the pipeline alignment and the pipeline alignment is not underlain by mass wasting deposits (criteria b). We did not observe any potentially unstable areas formed as a result of rapid stream incision, stream bank erosion or undercutting by wave action within 250 ft of the pipeline alignment (criteria c). The pipeline alignment is not located in a ravine or on an active alluvial fan, presently or potentially subject to inundation by debris flows or flooding (criteria d). The USDA (1973) has identified areas underlain by Alder -wood gravelly sandy loam, 6 to 15 percent slopes (AgQ as having moderate limitations for building site development and Ragnar fine sandy loam, 15 to 25 percent slopes (RgD) as having severe limitations for building site development (criteria e). There are no areas identified in the Department of Ecology Costal Atlas (2011) as Class U (unstable), UOS (unstable old slides), and URS (unstable recent slides) within 250 ft of the pipeline alignment (criteria f). There are no slopes in the project vicinity having gradients greater than 80 percent that would be subjected to rock fall during seismic shaking (criteria g). Based on our observations and review of available information, there are no areas within 25 ft of the proposed waterline pipeline alignment along 440' Avenue SW, 308t1' Street SW, 43rd Avenue SW, 3070' Street SW, and through the undeveloped area from the west end of 307t" Street SW to the Palisades Retreat Center entry road that meets any of the criteria listed above for landslide hazard area. Seismic Hazard Areas Section 19.05.070 of the FWRC defines Seismic hazard areas as those areas subject to severe risk of earthquake damage as a result of seismically induced ground shaking, slope failure, settlement or soil liquefaction, or surface faulting. These conditions occur in areas underlain by cohesionless soils of low density usually in association with a shallow groundwater table. We did not observe any areas within 250 ft of the water pipe alignment that would meet the criteria for seismic hazard areas. 6/8/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment_revl.docx t_ANDAu ASSOCIATES 5 Steep Slope Hazard Areas Section 19.05.070 of the FWRC defines steep slope hazard areas as those areas with a slope of 40 percent or greater and with a vertical relief of 10 or more feet, a vertical rise of 10 feet or more for every 25 feet of horizontal distance. A slope is delineated by establishing its toe and top, and measured by averaging the inclination over at least 10 feet of vertical relief. We did not observe any areas within 250 ft of the water pipe alignment that would meet the criteria for steep slope hazard areas. Impacts As required by Section 19.160.010 of the FWRC, the following provides a discussion of potential impacts along the pipeline alignment. Erosion Without proper erosion control measures, there is a potential for sediment to reach the pond on the west side of 44th Avenue SW, south of where 44"' Avenue SW becomes 3080' Street SW and for sediment to enter the storm sewer conveyance system of 39th Street SW. Slope Stability, Landslide Hazard, and Sloughing The majority of the pipeline alignment is within City of Federal Way maintained streets. The remaining pipeline traverses in an undeveloped area with gentle slopes of 25 percent or less. With proper construction methods, we do not anticipate any impacts to slope stability from construction of the pipeline. Seismic Hazard The project area is underlain by glacially consolidated soil that is not prone to liquefaction. In addition, the pipeline alignment is more than 250 ft from any steep slope area. Construction of the new water line will not increase the seismic hazard in the project vicinity along 44th Avenue SW, 308"' Street SW, 43rd Avenue SW, 3076' Street SW, and through the undeveloped area from the west end of 307th Street SW to the Palisades Retreat Center entry road Groundwater Without proper construction methods, the pipeline trench may act as a conduit for groundwater. Seeps, Springs, and Other Surface Waters Without implementing proper erosion control measures, both temporary and permanent, there is a potential for sediment to enter the pond along 44"' Avenue SW. 6/8/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment_revlAou LANDAU ASSOCIATES 6 Existing Vegetation The majority of the pipeline alignment is within City of Federal Way maintained roadways. There are no anticipated impacts to vegetation with the existing roadway prism. The portion of the alignment that extends from the west end of 307t1' Street SW to the Palisades Retreat Center entry road will result in clearing of a vegetation to construct the pipeline. Mitigation The following provides a discussion of mitigation measures that can be implemented to address identified potential impacts from construction of the new waterline. Erosion The erosion hazard along the pipeline route will be mitigated during construction by use of temporary erosion control measures such as installing filters at catch basins along 39t" Avenue SW to prevent sediment from entering the storm drain conveyance system, installing silt fences along the portion of 44"' Avenue SW adjacent to the pond to prevent sediment from entering the pond, installing silt fences along the down gradient side of the pipeline alignment through the undeveloped area from the west end of 307"' Street SW to the Palisades Retreat Center entry road, covering stockpiled excavated soil, daily cleaning of the roadway to remove loose soil, covering completed trenches within paved areas with cold patch, and covering completed trenches in unimproved areas with straw. Permanent erosion control measures will consist of repaving the roadway and revegetating disturbed areas as soon as practical. Groundwater Trench darns can be installed in areas where the pipe traverses down slopes to prevent the trench from acting as a conduit for groundwater. Trench darns should be placed in the trench for every 50 ft of elevation change and should be a minimum of 12 inches thick and extend to about 1 ft below the top of the trench. The trench dam should be keyed into the sides of the excavation a minimum of 1 ft. The trench dam should be constructed with controlled density fill (CDF) Seeps, Springs, and Other Surface Waters Proper erosion control measures as discussed above should provide adequate mitigation to prevent sediment for reaching the pond along 44tt' Avenue SW. 6/8/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment rev1.docx LANDAU ASSOCIATES 7 USE OF THIS LETTER REPORT This geological assessment was prepared for the exclusive use of Tacoma Water for the proposed Palisades III Water Main Replacement project located in Federal Way, Washington. The use by others, or for purposes other than intended, is at the user's sole risk. The findings, conclusions, and recommendations presented herein are based on our understanding of the project and on conditions observed during our February 8, 2011 site visit. Within the limitations of scope, schedule, and budget, the conclusions and recommendations presented in this report were prepared in accordance with generally accepted professional geotechnical engineering principles and practices in this area at the time this report was prepared. We appreciate the opportunity to be of service on this project. If you have any questions, please contact the undersigned at (253) 926-2493. , m _ LANDAU ASSOCIATES, INC. Edward J. Heavey, P.E. Principal Engineer EJH/jrc C5 A�`�SIUNAI-tip Attachments: Figure 1 — Vicinity Map Figure 2 — Site Plan REFERENCES Department of Ecology. 2011. Costal Atlas. https-.//fortress.wa.goy/ecy/coastalatlas/viewer.htrn. Accessed April 7, 2011. Troost, K.G., Booth, D.B., and Borden, R. In review. Geologic map of the Tacoma North 7.5-minute quadrangle, Washington. U.S. Geological Survey Miscellaneous Field Investigation. Scale 1:24,000. USDA. 2011. littp://websoilsurvey.nrcs.usda.gov/api)�MebSoilSunLey.agpx. Accessed March 26, 2011. USDA. 1973. King County Soil Survey. 6/8/11 Y:\658\004.010\R\Geotech\Palisades III Geological Assessment_rev1.docx LANDAU ASSOCIATES 8 o �- C N O sue= a� L P N LL 7 � � O � m A:c cca 'rn w � 3`oa`�i° -❑ L c m o U U U tZ (p N N 0 d in nuany 41�_ MS acu � U C � N -� ❑ U U c C N ❑ LL [0 N ♦` — m L — o :O \ Y N C O 11 1� O p L o a N c o W � : N � C -a I o U cu N j Y o y N \\\ I m E ►1 Y S L / r r r c j C) (0 / >d / I I I d lL •�• co c U U rn O w 4U O Q CITY OF FEDERAL WAY DEPARTMENT OF COMMUNITY DEVELOPMENT SERVICES DEVELOPMENT REVIEW COMMITTEE TRANSMITTAL DATE: TO: FROM: FOR DRC MTG. ON.• FILE NUMBER(s): RELATED FILE NOS.: PROJECT NAME: PROJECT ADDRESS: ZONING DISTRICT. - DATE Ann Dower, Senior Engineering Plans Reviewer Gordy Goodsell, South King Fire & Rescue Becky Chapin No Meeting. Email any comments. 11-102692-00-AD 10-100001I 44-1-(}21�2,-00-AD PALISADES III WATER MAIN PROJECT Dumas Heights Neighborhood/Palisades Retreat Center PROJECT DESCRIPTION: Administrative review to allow intrusions within critical area setbacks for essential public facility. The project will provide water to be used for potable water, fire suppression, and fire hydrants. Tacoma Water is lead agency for SEPA review. LAND USE PERMITS: PROJECT CONTACT. MATERIALS SUBMITTED: Administrative Decision (AD) Tacoma Water Ryan Flynn 3628 South 35"' Street Tacoma, WA 98409 Project Narrative Wetland Report & Addendum Geotechnical Report SEPA Checklist Site Plan /,A,,PO is a &_ , — December 10, 2010 Grant Whitley Tacoma Water 3628 South 351h Street Tacoma, WA 98409 RE: FILE 410-105011-00-AD; RESPONSE TO INQUIRY Palisades III Water Main Project, Federal Way Dear Mr. Whitley: The Department of Community Development Services is in receipt of your recent inquiries regarding regulatory review of proposed water main improvements in the Dumas Heights neighborhood. It appears portions of the improvements may be within environmentally sensitive areas or their associated buffers as identified on the city's critical areas map. Those areas have been identified as geologically hazardous areas, streams, and wetlands. Any improvements within critical areas, will likely trigger environmental review under State Environmental Policy Act (SEPA) policies adopted by the city. Tacoma Water has in it would provide lead agency duties when issuing SEPA related documents. Please find the following itemized list of city review requirements for each of the referenced areas. GEOLOGICALLY HAZARDOUS AREAS It appears the proposed improvements may be on or within 25 feet of landslide hazard and erosion hazard areas. Each of these areas is regulated under the umbrella of geologically hazardous areas pursuant to the city's Critical Areas Ordinance (CAO). The Director of Community Development Services is authorized to grant approval of intrusions into such areas pursuant to Federal Way Revised Code (FWRC) 19.160.010 if the following two criteria can be met: (1) no reasonable alternative exists; and (2) the development activity or land surface modification will not lead to or create any increased slide, seismic, or erosion hazard. The applicant is required to provide evidence the two criteria can be satisfied by submitting a soils report prepared by a professional geotechnical engineer. The report should describe how the improvements will impact the area and adjacent private property by detailing: slope stability, landslide hazard and sloughing; seismic hazards; groundwater; seeps, springs and other surface waters; and existing vegetation. The report should also provide recommendations for mitigating any identified impacts with supporting documents addressing the two intrusion criteria referenced above. The required soils report information may be found in its entirety at FWRC 19.160.010(3). STREAMS Intrusion into minor stream or major stream setbacks (50 feet and 100 feet, respectively) for essential public facilities, such as water infrastructure improvements, is permitted with approval from the Director of Community Development Services. FWRC 19.165.070(1) allows such intrusions if: (1) the line or improvement must traverse the setback area because no feasible alternative location exists based on an analysis of technology and system efficiency; and (2) the specific location and extent of the intrusion into Mr. Whitley December 10, 2010 Page 2 the setback area must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility. Please provide written responses addressing these criteria. WETLANDS Intrusion into wetland buffers for essential public facilities, such as water infrastructure improvements, are permitted with approval from the Director of Community Development Services. FWRC 19.175.040(3) allows such intrusions if. (1) the line or improvement must traverse the buffer because no feasible or alternative location exists based on an analysis of technology and system efficiency; and (2) the specific location and extent of the intrusion into the buffer must constitute the minimum necessary encroachment to meet the requirements of the public facility or utility. Any improvements within 200 feet of a wetland will require the applicant to submit a wetland report prepared by a qualified professional. The report must contain evaluation items listed in FWRC 19.175.010(2). The applicant will also be required to address the two above -referenced criteria. The city's CAO does not permit administrative approval for intrusions into regulated wetlands. Such intrusions require the minimum mitigation ratios listed in FWRC 19.175.030 and Hearing Examiner approval. Please contact me for further information if improvements are needed within any regulated wetlands. PROJECT REVIEW Review of geotechnical and wetland reports are conducted via contracted third party professionals. Costs associated for such review are the responsibility of the applicant. With the exception of intrusions into regulated wetlands, no official land use application is required for the administrative approval for geologically hazardous areas, stream setback, and wetland setback areas. A detailed narrative addressing the applicable criteria and associated environmental studies will be used for project evaluation and the administrative decision. If the SEPA determination will be issued prior to submitting requests for intrusions into critical areas, please include detailed site plans and associated environmental constraints with the environmental checklist to be forwarded to the city. This will assist city staff in reviewing and commenting on SEPA related documents. CLOSING If you have any questions regarding this letter please contact me at 253-835-2638 or matt.herrera e cit offederalwa .com. Additionally, please feel free to direct any questions you may have when completing the environmental checklist associated with your project. Sincerely, Matthew Herrera Associate Planner c: Kathy Messinger, Engineering Technician Doc. I.D. 56453 -•_; T9 TACOMA WATER July 1, 2011 3628 South 35th Street Tacoma, Washington 98409-3192 TACOMA PUBLIC UTILITIES Mr. Matthew Herrera City of Federal Way Community Development Services 33325 8th Ave. S. Federal Way, WA 98063 Subject: State Environmental Policy Act - Environmental Checklist SEPA File Number: SEP2010-40000155957 MRP 2009-33 To Whom It May Concern: RECEIVED BY COMMUNITY DEVELOPMENT DEPARTMENT JUL 0.5 2011 Please review the enclosed SEPA for the above project. If you have any comments or pertinent information, please submit them to me by 5:00 p.m. on July 20, 2011. If you have any questions or know of other agencies or groups who should receive a copy of this document, please call me at (253) 396-3111. Sincerely, 4(L-Ryan"Flynn,, P.E Principal Engineer Enclosures .r + Taco Determination of Nonsignificance Tacoma Water Main Replacement Project 2009-33 SEPA File Number SEP2010-40000155957 TO: All Departments and Agencies with Jurisdiction SUBJECT: Determination of Nonsignificance In accordance with WAC 197-11-340, a copy of the Determination of Environmental Nonsignificance for the project described below is transmitted: Applicant: City of Tacoma, Department of Public Utilities, Water Division 3628 South 35th Street Tacoma WA 98409 Proposal: Construction of approximately 2,300 OF of 8-inch, 950 OF of 6-inch, and 250 L/F of 4-inch ductile iron water mains, fire hydrants and water services. Location: 441h Ave SW from SW Dash Point Rd to 308th St SW, in 3081h St SW from 441h Ave SW to 43d Ave SW, in 43'f Ave SW from 3081h St SW to 3071h St SW, in 3071h St SW from 43fd Ave SW then westerly approximately 900 LIF in 3071h St. In 310" St SW west from 441h Ave SW. In 3081h St SW westerly from 44th Ave SW. In 391h Ave SW from SW Dash Point Rd to north approximately 830 feet to end of cul-de- sac. In the NE and NW 1/4 of section 11, T21 N, R3E, WM, Federal Way, WA. Lead Agency: City of Tacoma City Contact: Grant Whitley Tacoma Public Utilities Tacoma Water 3628 South 35th Street Tacoma WA 98409 (253) 502-8746 The lead agency for this proposal has determined that this project does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21C.030(2). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. Main Replacement Project (MRP2009-33) SEPA File Number SEP2010-40000155957 This Determination of Nonsignificance (DNS) is issued under WAC 197-11-340(2)(c). The City will not act on this proposal for 14 days from the date of issue. Comments must be submitted by 5:00 p.m. by the closing of the comment deadline. The Responsible Official will reconsider the DNS based on timely comments and may retain, modify, or, if significant adverse impacts are likely, withdraw the DNS. If the DNS is retained, it will be final after the expiration of the comment deadline. No permits may be issued, and the applicant shall not begin work, until the comment deadline has expired and any other necessary permits are issued. Appeals may be filed at the Superior Court of the State of Washington for Pierce County within 21 days after the final determination. Appeals to the Superior Court shall be taken in accordance with procedures and limitations set forth in RCW 43.21 C.075. A copy of the appeal shall be filed with the City of Tacoma, Department of Public Utilities, Attention: Ryan Flynn, Water Division, P.O. Box 11007, Tacoma, WA 98411-0007. Responsible Official: Linda McCrea Position/Title: Tacoma Water Superintendent Signature: r �� ��.[^ _ ;�� f Issue Date: July 5, 2011 Comment Deadline: July 20, 2011 NOTE: The issuance of this Determination of Nonsignificance does not constitute project approval. The applicant must comply with all other applicable requirements of the City of Tacoma Departments and other agencies with jurisdiction prior to receiving construction permits. File: Building and Land Use Services, Attention: Shirley Schultz cc: Contact Person/Applicant Attached List Pierce County Public Works and Utilities 2401 South 35th Street Tacoma, WA 98409-7485 Pierce County Department of Health Attention: Brad Harp 3629 South D Street Tacoma WA 98408 State of Washington Department of Ecology PO Box 47600 Olympia WA 98504-7600 State of Washington Environmental Assistance Program P. O. Box 47703 Olympia WA 98504-7703 City of Tacoma Building and Land Use Services Attention: Shirley Schultz 747 Market Street, Room 345 Tacoma WA 98402 City of Federal Way Attention: David Lee PO BOX 9718 Federal Way, WA 98063 James L. Michaels Division Manager Endangered Species Conservation and Hydropower Planning U.S. Fish and Wildlife Service Western Washington Fish and Wildlife Office 510 Desmond Dr., SE Suite 102 Lacey, Washington 98503 Chris Anderson Wildlife Biologist District 12, King County WA Dept. of Fish and Wildlife - Region 4 16018 Mill Creek Blvd. Mill Creek, WA 98012 Matthew Herrera, Associate Planner City of Federal Way Community Development Services 33325 8th Avenue South Federal Way, WA 98063 ENVIRONMENTAL CHECKLIST A. BACKGROUND Name of proposed project, if applicable: Main Replacement Proiect MRP 2009-33 2. Pro ❑nentla licant--Name and phone number: Ryan Flynn 253-396-1111 Tacoma Water Proponent/applicant--Address: 3628 South 35th Street Tacoma, WA 98409 3, Contact Person --Name and phone number: Grant Whitley— 253-502-8746 Contact Person --Address: 3628 South 35th Street Tacoma, WA 98409 4. Date checklist prepared June 29, 2011 5. Agency requesting checklist City of Tacoma 6. Proposed timing or schedule (including phasing, if applicable): Construction of water mains starting September 2011 and complete by December 2011 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No future additions. expansions or further activity with this proposal are planned at this time. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Portions of this prooect may be located within environmentally sensitive areas or their associated buffers as identified on the CitV of Federal Wa 's critical areas map. Reports addressing these issues will be submitted to the City of Federal Way for review. There has also been report of a Great Blue Heron nest located near the proiect limits. Information will be submitted to the State of Washington Department of Fish and Wildlife for review. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. Yes. City of Federal Way right of way permit. Review of environmental documents by City of Federal Way from item 8 above. 10. List any government approvals or permits that will be needed for your proposal, if known. Contract award by the Tacoma Public Utility Board. City of Federal Way Right of Way Permit Citv of Federal Wav Geologically Hazardous Area Review City of Federal Way Wetland Review City of Federal Way Stream Review 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. Install water mains, fire hydrants and water services in 44tr, Ave SW from SW Dash Point Road to 308th St SW, in 308th St SW from 44" Ave SW to 43r" Ave SW, in 43r`` Ave SW from 3081n St SW to 3071h St SW, in 307th St SW from 43r`' Ave SW then westerly approximately 900 L/F in 307'h St. and in easements. In 31 Oth St SW west from 44"' Ave SW. in 3081h St SW, westerly from 44th Ave SW. In In 39th Ave SW from SW Dash Point Road to north approximately 830 feet to end of cul-de-sacs. Located in the NE and NW quarters of section 11, T21N, R3E, WM, Federal Way Washington. This will include excavation of the existing roadways and shoulders to install new water mains, fire hydrants water services, and appurtenances, and then restoration of the road surface and other work to meet the requirements of the City of Federal Way right of way permit. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any. If a proposal would occur over a range of area, provide the range or boundaries of the site(s) See attached vicinity ma 13. Assessor Parcel Number: NA B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other: Hilly. b. What is the steepest slope on the site (approximate percent slope)? Approximately 100HA6V c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. Gravelly Sandy Loam, clay, and glacial till. d. Are there surface indications or history of unstable soils in the immediate vicinity? Portions of this area are listed on The City of Federal WaV maps as a Landslide Hazard Area. e. Describe the purpose, type and approximate quantities of filling or grading proposed. Indicate source of fill. Trench excavations will be backfiiled with stable material and surface restored to its original condition. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Potentially yes. However erosion control BMP measures will be implemented b the Contractor. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Impervious surface disturbed during construction will be restored in accordance with the City of Federal Way right of wa permit. No new impervious surfaces are proposed to be constructed as part of this project. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Proposed water main will mostly be under the paved road surface and shoulder. The road surface will be restored per the City of Federal Way Right of way permit. The Contractor will install BMP's such as silt fencing, wattles. check dams to reduce erosion. Additionally, disturbed portion of the paved roadway be temporarily atched with asphalt at the close of each working day. 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. Limited dust and equipment exhaust during construction. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. No. c. Proposed measures to reduce or control emissions or other impacts to air, if any. Water maV be used to control dust during construction. 3. Water a. Surface 1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. Yes. there are bodies of water in the immediate vicinity of the site including, saltwater Pu et Soundl, freshwater, a pond on the west side of 44 ' Ave SW south of 308 St SW). and a stream out of the pond that crosses under 44 ' Ave SW. to a wetland in Dumas Bay Park, and then flows into Puget Sound. 2) Will the project require any work in or adjacent to (within 200 feet) of the described waters? If yes, please describe and attach available plans. Yes. Near to the pond and stream. Water main will be installed in 44 ' Ave SW, and in 308 St SW west of 44 THSt SW. as well as water services from the new mains to the existing properties, see water main drawing 2009-33. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. None. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No. 5) Does the proposal lie within a 100-year flood plain? If so, note location on the site plan. No. 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. Yes. Water main flushing_ will involve dechlorinating water and using difussers, allowing a flow into existing ditches and storms stems at a rate compatible with the s stems. In areas where Tacoma Water is not permitted to dischar e dechlorinated water into the storms stem. the water will be trucked off site for disposal. This will involve approximately 75.000 gallons. b. Ground: 1) Will the ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities, if known. No. Trench de -watering is_ not anticipated to be necessary. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any. For example: domestic sewage, industrial, containing the following chemicals ... agricultural; etc. Describe the general size of the system, the number of such systems, the number of houses to be served, if applicable, or the number of animals or humans the system(s) are expected to serve. Not applicable to water main construction. c. Water Runoff (including storm water): 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. Generally not applicable to water main construction. 2) Could waste materials enter ground or surface waters? During construction waste material could potential] enter surface waters. The Contractor will implement BMP's as previous described prevent waste materials from entering surface waters. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any. As indicated above erosion control BMPs will be required, and where necessary, flushing water will be trucked off site for disposal. 4. Plants a. Check or circle types of vegetation found on the site. ® deciduous tree: alder, maple, aspen, other ® evergreen tree: fir, cedar, pine, other ® shrubs ® grass ® pasture ❑ crop or grain ❑ wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other ❑ water plants: water lily, eelgrass, milfoil, other ❑ other types of vegetation b. What kind and amount of vegetation will be removed or altered? Some grass or small shurbs when installing water mains, water meters and fire hydrants. Some trees may be removed within the Palisades Retreat Center. c. List threatened or endangered species known to be on or near the site. None known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: None known. 5. Animals a. Underline any birds and animals which have been observed on or near the site or are known to be on or near the site: birds: hawk, heron, eagle, song_ birds, other: sea ells and crows. mammals: deer, bear, elk, beaver, other: coyote, raccoons, skunks andsquirrels. fish: bass, salmon, trout, herring, shellfish, other: None known. b. List any threatened or endangered species known to be on or near the site. Bald Eagles. c. Is the site part of a migration route? If so, explain. Yes, the Pacific Flyway, for migrating birds, from Alaska and extends to Mexico. d. Proposed measures to preserve or enhance wildlife, if any. As indicated above erosion control BMPs will be required. For example, catch basin inserts will be placed in all CBs in the pr❑ject area and checked during construction. Streets will be cleaned as needed. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs: None. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any. None. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. The existing asbestos cement water main replaced b this project located within the CitV of Federal Way right of way will be removed and disposed of. The contractor will dispose of the water asbestos cement water main in accordance with State and Federal requirements. 1) Describe special emergency services that might be required. None known. 2) Proposed measures to reduce or control environmental health hazards, if any: The Contractor will remove asbestos cement water main in accordance with an approved asbestos cement water main removal plan. The Contractor will utilize water to wet the pipe and.wrap the abandoned water main in two lavers of po}Vethylene. b. Noise 1) What types of noise exist in the area which may affect your project, (for example: traffic, equipment, operation, other)? None. 2) What types of levels would be created by or associated with the project on a short-term or long-term basis (i.e., traffic, construction, operation, other)? Indicate what hours noise would come from the site. Periods of increased noise levels will occur only during the construction of the project due to the operation of the contractor or Tacoma Water crews. Those increased noise levels will usually occur weekda s 8.00 am to 5:00 pm only. Possible after hours work may be required 3) Proposed measures to reduce or control noise impacts, if any. Mufflers on construction equipment. Daytime work specified. 8. Land and Shoreline Use a. What is the current use of the site and adjacent properties? CitV of Federal Way road right -of wa, retreat center, Adjacent properties are residential homes_ and Dumas Bay Park_ b. Has the site been used for agriculture? If so, describe. No. c. Describe any structures on the site. None. d. Will any structures be demolished? If so, what? No. e. What is the current zoning classification of the site? This proiect will be constructed within street right of way as well as crossing private property. Private property is zoned. Single Family Residential. RS15.0 and SE. What is the current comprehensive plan designation of the site? This project will be constructed within Street right of way as well as within easements crossing rivat ro ert. Private property is a combination of Single Famil Medium Density, Single Famiiy Low Density. and Parks and Open Space. g, if applicable, what is the current shoreline master program designation of the site? Not applicable. h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Portions of 40' Ave SW as well as 307 St SW are within a Landslide Hazard Area and/or a Erosion Hazard Area as shown on the City of Federal Way "Critical Areas" .map. i. Approximately how many people would reside or work in the completed project? None. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any. None. I. Proposed measures to ensure the proposal is compatible with existing and projected land use and plans, if any. Not applicable - installing water mains. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. None. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. None. c. Proposed measures to reduce or control housing impacts, if any. None. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? The height of a fire hydrant is approximately three feet above ground level and is constructed mostly of cast iron. b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts, if any. Site will be returned to re- construction condition or better. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light or glare from the finished project be a safety hazard or interfere with views? No. c. What existing off -site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any. None. 12. Recreation a. What designation and informal recreational opportunities are in the immediate vicinity? Dumas Ba Park is located along the pro6ect limits. Additionally Dash Point State Park is approximately one mile to the west of the promect, with camping, icnickin . hiking, and access to the beach. b. Would the proposed project displace any existing recreational uses? If so, describe. No. C. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. None. 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state, or local preservation registers known to be on or next to the site? None known. b. Generally describe any landmarks or evidence of historic, archaeological, scientific , or cultural importance known to be on or next to the site. None known. c. Proposed measures to reduce or control impacts, if any. None. 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. See attached vicinity map. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Not applicable. C. How many parking spaces would the completed project have? How many would the project eliminate? None. d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). No. Pavement disturbed by the construction project will be restored in accordance with the Federal WaV right of way permit. This project does not propose to construct any new road improvments. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. None. g. Proposed measures to reduce or control transportation impacts, if any. All temporary traffic controls during the construction period will be subiect to the approval of City of Federal Way. 15. Public Services a. Would the project result in an increased need for public services (i.e., fire protection, police protection, health care, schools, other)? If so, generally describe. No. b. Proposed measures to reduce or control direct impacts on public services, if any. None. 16. Utilities a. Underline utilities currently available at the site: electriciit, natural gas, water, refuse service, telephone, sanitary sewer, septic sstem, other. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. install new water main. C. Signature The above answers are true and co understand that the lead agency is i Signature of Proponent/Appl Date: (0 [3449�! 15-6-st of my Ob�vledge. I m to make its d cision. Received, Buildings and Land Use Services Division. Date Submitted: Receipt # Filing Fee $ LEGAL NOTICE City of Tacoma Determination of Nonsignificance Lead Agency: City of Tacoma Applicant: City of Tacoma, Department of Public Utilities, Water Division Proposal: Construction of ductile iron water mains MRP 2009-33 Palisades 3 Location: 44th Ave. SW from SW Dash Point Road to 308th St. SW, in 308th St. SW from 44th Ave SW to 43rd Ave. SW, in 43rd Ave. SW from 308th St. SW to 307th St. SW, in 307th St. SW from 43rd Ave. SW then westerly approximately 900 L/F in 307th St. In 310th St. SW west from 44th Ave. SW. In 308th St. SW westerly from 44th Ave. SW. In 39th Ave. SW from SW Dash Point Road to north approximately 830 feet to end of cul-de-sac. In the NE and NW % of section 11 T21 N, R3E, WM, Federal Way WA. SEPA Public Information Center File Number SEP2010-40000155957 The lead agency for this proposal has made a preliminary determination that this project does not have a probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW 43.21 C.030(2)(9c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. Comments on this determination of environmental nonsignificance must be submitted by 5:00 p.m. on July 20, 2011. The City will reconsider this determination based on timely comments and may retain, modify, or if significant adverse impacts are likely, withdraw the determination. Unless modified by the City, this determination will become a final determination on July 21, 2011. Appeals may be filed at the Superior Court of the State of Washington for Pierce County within 21 days after the final determination. Appeals to the Superior Court shall be taken in accordance with procedures and limitations set forth in RCW 43.21 C.075. A copy of the appeal shall be filed with the City of Tacoma, Department of Public Utilities, Water Division, Attention: Ryan Flynn, 3628 South 35th Street, Tacoma, WA 98409. The City of Tacoma does not discriminate on the basis of disability in any of its programs or services. Upon request, special accommodations will be provided within five (5) business days by contacting 591-5363 (VOICE) or 591-5070 (TTY). Issue/Publication Date: July 5, 2011 Bill Direct MAIN REPLACEMENT PROJECT 2009-33 PALISADES III Wetland Report Palisades 111 Water Main Replacement Federal Way, Washington June 13, 2011 Prepared for Tacoma Public Utilities Tacoma, Washington LANDAU I'A" ASSOCIATES 950 Pacific Avenue, Suite 515 Tacoma, WA 98402 (253) 926-2493 I I I I J I I J J EXECUTIVE SUMMARY Tacoma Public Utilities, Water Division, plans to replace the existing asbestos cement (AC) waterline for the Palisades III Water Main Replacement project in Federal Way, King County, Washington. The project intent is to provide reliable water service, in so doing it is necessary to replace the aging portions of the system with dependable materials and locate facilities such that Tacoma Water will have continuous access. The existing AC will be replaced with new 4, 6, and 8 inch Ductile Iron Special Class 52 pipe. Fire hydrants will be installed and connected to the new waterline at select locations. The waterline project extends from about 450 ft north of the intersection of 313th Street SW and 44t" Avenue SW along 44th Avenue SW, 308th Street SW, 43'd Avenue SW, and 307t" Street SW to the west end of SW 3070' Street. The pipeline then traverses westward through an undeveloped area to the Palisades Retreat Center. The project includes replacing the existing AC waterline in 310"' Street SW, west from 44th Avenue SW, SE 308th Street, and in 39t" Avenue SW, west from SW Dash Point Road. With the exception of the portion of the new waterline from the west end of 307th Street SW to the Palisades Retreat Center, the new waterline will be within existing roadways. The project area for this wetland report includes approximately 175 ft of the water pipeline replacement along SE 308th Street and 375 ft of the water pipeline along 40' Avenue SW at the intersection of SE 308th Street and 44th Avenue SW. The project results in temporary and permanent wetland buffer impacts. The project will be adjacent to a Category III wetland and stream (Stream 0390C-1), which is connected downstream of the wetland via a culvert under 44`h Avenue SW. A fire hydrant will be installed within the wetland buffer and right-of-way adjacent to 44th Avenue SW. Permanent impacts will be less than 2 ft2 and temporary impacts will be re -planted using hydroseed. Construction best management practices will be used to prevent any stormwater, sediment, or construction material from entering the wetland or Stream 0390C-1. There will be no impacts to the stream, wetland area, or to the wetland functions. 6113/11 Y:\658\004.010\R\Wetland\Palisades III Wetland Delinea5on.docx LANDAU ASSOCIATES ii Cifn tnf—mn inn Location Site Name(s) County City Section (Y., %), Township, Range Latitude, Longitude Watershed WRIA Number FACT SHEET Information Tacoma Water Main Replacement Project 2009-33 Palisades III King Federal Way Section 11, Township 21 North, Range 03 East 470 19' 33"N, 1220 23' 19"W Puyallup/White 10 Summary of Delineated Wetlands including, wetland type, wetland tunctions, butferwimn, ano wettana size: Designation: Type within Study Area Category Water Quality Hydrologic Habitat Buffer Size°: (Cowardin/HGM): (Rating): Rating Rating Rating Width: Wetland A PEM/depressional III (32) 4 8 20 Key: PEM — Palustine emergent Size based on delineated wetland area and estimated boundary outside of project area. 50 ft 66,371 ft2 Summary of Droiect. including proposed type and location of work , goals and objectives, wetland functions, impacted and mitjuated (note assessment method used), and the general design concept include where it has been done before . Tacoma Public Utilities, Water Division, plans to replace the existing asbestos cement (AC) waterline in the Palisades area with new 4, 6, and 8 inch Ductile Iron Special Class 52 pipe. Fire hydrants connected to the new waterline will be installed at selected locations. The project extends from about 450 tt north of the intersection of 313'" Street SW and 44"' Avenue SW along 44'" Avenue SW, 308W' Street SW, 43'" Avenue SW, and 307"' Street SW to the west end of SW 3071" Street. The pipeline then traverses westward through an undeveloped area to the Palisades Retreat Center. The project also includes replacement of the existing AC waterline in 310'" Street SW, west from 441" Avenue SW, SE 308`" Street, and in 39`" Avenue SW, west from SW Dash Point Road. With the exception of the portion of the new waterline from the west end of 3071" Street SW to the Palisades Retreat Center, the new waterline will be within existing roadways. The project will be adjacent to a Category III wetland and major stream, Stream 0390C-1, which is connected downstream of the wetland via a culvert under 441" Avenue SW. A fire hydrant will be installed within the wetland's buffer area and right-of-way adjacent to 44'" Avenue SW. Permanent impacts will be less than 2 ft2 and temporary impacts will be re -planted using hydroseed. Construction best management practices will be used to prevent any stormwater, sediment, or construction material from entering the wetland or Stream 0390C-1. There will be no impacts to the stream, wetland area, or to the wetland functions. 6/13/11 Y:\658\004.010\R\WeUand\Palisades III Wetland Delineation.docx LANDAU ASSOCIATES iv l l 1 l I I i J I J J TABLE OF CONTENTS Page 1.0 INTRODUCTION 1-1 1.1 SITE DESCRIPTION 1-1 1.2 REGULATORY BACKGROUND 1-2 2.0 METHODS 2-1 2.1 BACKGROUND INFORMATION REVIEW 2-1 2.2 WETLAND DELINEATION 2-1 2.3 WETLAND CLASSIFICATION, RATING, AND BUFFER WIDTH 2-2 3.0 RESULTS 3-1 3.1 BACKGROUND INFORMATION REVIEW 3-1 3.2 FIELD INVESTIGATION 3-2 3.2.1 Wetland A 3-3 3.2.1.1 Vegetation 3-3 3.2.1.2 Soils 3-3 3.2.1.3 Hydrology 3-4 3.2.1.4 Wetland Determination 3-4 3.2.1.5 Upland Characterization 3-4 3.2.2 Stream 0390C-1 3-5 4.0 PROJECT IMPACT ASSESSMENT AND MITIGATION 4-1 4.1 AVOIDANCE/MINIMIZATION 4-1 4.2 UNAVOIDABLE IMPACTS 4-2 4.3 MITIGATION 4-2 5.0 USE OF THIS REPORT 5-1 6.0 REFERENCES 6-1 Fire Title 1 Vicinity Map 2 Site Plan FIGURES TABLES Table Title 1 Methods for Wetland Determination 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetland Delinealion.dou LANDAU ASSOCIATES Vl APPENDICES Appendix Title A Background Infonnation Review Figures B Soil Profile Reports C Precipitation Data D Data Sheets E Selected site Photographs F Wetland Rating Form 6/13/11 Y:\658\004.010\R\Wetland\Palisades III Wetland Delineabon.dom LANDAU ASSOCIATES vii I 1 I 1 1 I I I I I LIST OF ABBREVIATIONS AND ACRONYMS AC Asbestos Cement BGS Below Ground Surface BMPs Best Management Practices City City of Federal Way DNR Washington State Department of Natural Resources Ecology Washington State Department of Ecology E2USN Estuarine, intertidal, unconsolidated shore, regularly flooded FAC Facultative FACU Facultative Upland FACW Facultative Wetland FEMA Federal Emergency Management Agency ft Feet FWRC Federal Way Revised Code HGM Hydrogeomorphic HPA Hydraulic Project approval NCDC National Climatic Data Center NRCS Natural Resources Conservation Service NWI National Wetlands Inventory OBL Obligate PEM Palustrine Emergent PFO Palustrine Forested PSS Palustrine Scrub -Shrub PUBH Palustrine Unconsolidated Bottom, Permanently Flooded RCW Revised Code of Washington ROW Right -of -Way Tacoma Water Tacoma Public Utilities, Water Division USACE U.S. Army Corps of Engineers USDA U.S. Department of Agriculture USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey WDFW Washington Department of Fish and Wildlife WRIA Water Resource Inventory Area 6113/11 Y.\658\004.010\R\WeUand\Palisades III Wetland Delineation.docx LANDAU ASSOCIATES J Vlll I I 1.0 INTRODUCTION Tacoma Public Utilities, Water Division, (Tacoma Water) plans to replace the existing asbestos cement (AC) waterline for the Palisades III Water Main Replacement Project in the City of Federal Way, King County, Washington (Figure 1). The existing main is located east of the pond and runs north/south along the eastern property line of the Palisades Retreat Center. Due to its current location, the existing main is virtually inaccessible should the aging asbestos cement main experience a failure. The intent of the project is to provide reliable water service, thus it is necessary to replace the aging portions of the system with dependable materials and locate facilities such that Tacoma Water will have continuous access. The existing AC will be replaced with new 4, 6, and 8 inch Ductile Iron Special Class 52 pipe. Fire hydrants connected to the new waterline will be installed at selected locations. The project extends from about 450 ft north of the intersection of 313th Street SW and 44"' Avenue SW along 440' Avenue SW, 308th Street SW, 43rd Avenue SW, and 307t" Street SW to the west end of SW 307"' Street. The pipeline then traverses westward through an undeveloped area to the Palisades Retreat Center. The project also includes replacement of the existing AC waterline in 310th Street SW, west from 44th Avenue SW, SE 308th Street, and in 39"' Avenue SW, west from SW Dash Point Road. With the exception of the portion of the new waterline from the west end of 307th Street SW to the Palisades Retreat Center, the new waterline will be within existing roadways. The project area for this wetland report includes approximately 175 ft of the water pipeline ` replacement along SE 308th Street and 375 ft of the water pipeline along 44"' Avenue SW at the intersection of SE 308th Street and 40' Avenue SW as shown on Figure 2. Landau Associates, under contract to Tacoma Water, conducted this investigation to assist in determining potential impacts to wetlands and other "waters of the U.S.," and other critical areas regulated by the City. Installation of the new waterline will be within existing paved roadways and will not impact the wetland, wetland buffer, or stream within the area. The installation of one fire hydrant, an J essential public facility/public utility (Federal Way Revised Code 19.175.040 subsection 3), will be installed within the right-of-way (ROW) of 44'11 Avenue SW which is within the vegetated buffer area between 44th Avenue SW and an identified wetland area. As a result of the proposed project, minor, unavoidable impacts will occur to one wetland buffer. 1.1 SITE DESCRIPTION The project is located in the City of Federal Way (City) near the Puget Sound, within the Puyallup/White watershed [Water Resource Inventory Area (WRIA) 10] in Section 11, Township 21 6/13/11 Y:\656\004.010\R\Welland\Palisades III Welland Delinealion.doa LANDAU ASSOCIATES I - I North, and Range 3 East. Land use is primarily residential within the vicinity of the project. The project location is shown on Figure 1. The City has' identified a wetland (Wetland A) located southwest of the intersection of 40' Avenue SW and SE 308"' Street. According to the Federal Way Revised Code (FWRC) Section 19.175.010, a wetland report is required for all wetlands that may exist on or within 200 ft of the project site. The study area for this delineation consists of the water line replacement area adjacent to the known wetland. One stream (Stream 0390C-1) receives hydrology from Wetland A through a culvert under 44t" Avenue SW. 40 Avenue SW is adjacent to the west of Stream 0390C-1 and goes through the stream's setback area; however, all project work will be entirely within the paved roadway, and will not impact the stream, its associated culverts, or impact, alter or change the existing setback area. Therefore, the stream was not delineated as part of this project. Additionally, all delineations were limited to accessible private properties with pennission within the project area. Wetlands and waterways located on private property outside of the project area, or where permission was not obtained, were estimated based on site observations and information described in Section 3.1. 1.2 REGULATORY BACKGROUND The Clean Water Act requires authorization for the discharge of dredged or fill material into the "waters of the U.S." under Section 404. FWRC contains requirements for establishing wetland and stream buffer widths and building setbacks for any alteration, including fill, of wetlands, streams, and their buffers. The Washington State Department of Ecology (Ecology) requires compliance with the State Water Pollution Control Act (RCW 90.48), and it has administrative oversight of Section 401 of the Clean Water Act for water quality certification in the case of impacts to U.S. Anny Corps of Engineers (USACE) jurisdictional "waters of the U.S." Any work that will use, divert, obstruct, or change the bed or flow of state waters, including streams and rivers, must do so under the terms of Hydraulic Project Approval (HPA) issued by the Washington Department of Fish and Wildlife (WDFW). WDFW HPA is administered under RCW 77.55 and rules set forth in WAC 220410. Wetlands and certain waterways are regulated by federal, state, and local governmental agencies and compliance with one agency does not necessarily fulfill permitting requirements of any other agencies. In this instance, the wetland area was delineated and it was determined only minor impacts will occur to the wetland buffer. No fill will be placed into waters and no water will be diverted. For this project, the City has requirements for establishing wetland buffer widths and building setbacks, as well as for any alteration, including fill, of wetlands and their buffers. Given an adequate enhancement plan, the City may allow a reduction of standard buffer widths along with averaging of buffer widths, provided that 6/13/11 Y:\658\004.010\R\Welland\Palisades III Wetland Delinea6on.docx LANDAU ASSOCIATES 1-2 I at no single point the buffer width is less than 50 percent of the original buffer width in accordance with FWRC Section 19.175.040. I I j 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Welland Delineation.dom LANDAU ASSOCIATES j 1-3 I I I —1 J-] I I I 1 2.0 METHODS Landau Associates conducted this wetland investigation in accordance with the USACE Wetland Delineation Manual (USACE 1987), the USACE Regional Guidance letter on the 1987 Manual (USACE 1994), and the USACE Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Regional Supplement) (USACE 2010). As of March 01, 2011, Washington State Department of Ecology (Ecology) has adapted USACE's Regional Supplement for wetland investigations. Therefore, Ecology's Washington State Wetlands Identification and Delineation Manual (Ecology 1997) was not applied. In general, the USACE and Ecology recommend gathering preliminary data and synthesizing available background information, followed by a field investigation. 2.1 BACKGROUND INFORMATION REVIEW Landau Associates reviewed the following public domain resources to determine existing conditions and potential wetlands and other "waters of the U.S." within the study area: ■ Topographic map (image data source: USDA, 1999) ■ Aerial photograph (image data source: I3 Imagery Prime, 2009) ■ National Wetlands Inventory (NWI) map (Image data source: USFWS, 2010) ■ Federal Emergency Management Agency (FEMA) Flood Map (image data source: FEMA, 2011) ■ USDA NRCS Web Soil Survey (image data source: USDA 2006) ■ National Hydric Soils List (USDA, NRCS website 2011) ■ City of Federal Way Stream Rating Map (Federal Way, 2005) • Washington Department of Fish and Wildlife (WDFW) SalmonScape (WDFW 2011) ■ Precipitation data (USDA NRCS website 2002, National Climatic Data Center website 2011). 2.2 WETLAND DELINEATION Both USACE and Ecology outline a three -parameter approach to determine the presence or absence of wetlands that requires evaluating vegetation, soil, and hydrology (Table 1). Landau Associates biologists completed the field delineation using the routine onsite method, where data are collected at locations representative of typical wetlands and/or uplands of the study area. Following this method, an area is determined to be wetland if each of the following three criteria are met (also see Table 1): • The dominant vegetation is hydrophytic. • Soils are hydric. 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetland Delineation.docx j 2-1 LANDAU ASSOCIATES 0 Wetland hydrology is present. "Difficult wetland situations" may occur in which one or more of the required criteria have been disturbed by human or natural events (atypical situations) or are absent due to natural variability (problem areas). In cases of difficult wetland situations, a wetland determination can be based on the best available information of the site, knowledge of the ecology of wetlands in the region, and/or the other undisturbed/ present criteria. 2.3 WETLAND CLASSIFICATION, RATING, AND BUFFER WIDTH Any wetlands identified as part of this project were classified according to the U.S. Fish and Wildlife Service's (USFWS's) Cowardin classification system (Cowardin et al. 1979) and the USACE's hydrogeomorphic (HGM) classification system (Brinson 1993). Wetlands were rated according to the Washington State Wetlands Rating System for Western Washington (Hruby 2004), and classified as required by the FWRC Section 19.175.020. This system categorizes wetlands based on their existing functions, including water quality, hydrology, and habitat, as well as the wetland's rarity, sensitivity to disturbance, or inability to replace. Wetland buffers were determined according to FWRC Section 19.175.020. 6/13/11 Y:\656\004.010\R\Wedend\Palisades III Welland Delinealion.docx LANDAU ASSOCIATES 2-2 3.0 RESULTS This section provides the results of the background information review and field investigation. 3.1 BACKGROUND INFORMATION REVIEW Wetlands The USGS topographic map for the project area (Appendix A, Figure A-1) identifies an area of open water within the project area. An island is shown within the open water area. The USGS topographic map does not identify any additional streams, depressions, or water features in the study area. The aerial photograph (Appendix A, Figure A-2) shows the project area to be forested and open grass (lawn) area with private residences. The open water area and associated island is easily identifiable on the aerial photograph. No other streams or water features are identifiable. The National Wetlands Inventory Map (Appendix A, Figure A-3) identifies one wetland within the project area. The wetland within the project area, at the location of the open water area identified on the USGS topographic map and aerial photograph, is shown as a palustrine, unconsolidated bottom, permanently flooded (PUBH) wetland. Floodplains The FEMA flood map does not show any flood zones within the project area (Appendix A, Figure A-4). A flood zone is identified approximately 600 ft to the north of the project area along the Dumas Bay shoreline. Soils JThe USDA NRCS Web Soil Survey identifies an area of "water" and one soil series within the project area (Appendix A, figure A-5; complete soil profile reports are provided in Appendix B): I I I J + Alderwood gravelly sandy loam, 6 to 15 percent slopes (AgQ consist of moderately deep to a cemented pan, moderately well drained soils formed in glacial till (USDA, NRCS 2007). The typical profile generally consists of gravelly sandy loam from 0 to 12 inches below ground surface (BGS) over very gravelly sandy loam to 60 inches BGS. A perched water table can be found in these soils as high as 18 to 36 inches from January through March (USDA, NRCS 2007). The National Hydric Soils List (USDA, NRCS website 2011) lists Alderwood gravelly sandy loam, 6 to 15 percent slopes as a hydric soil in depressions that contain components of the Norma, Bellingham, Seattle, Tukwila, Shalcar, soil series. • Water is identified in the open water area identified on the snapping sources described above. 6113/11 Y:\656\004.010\R\Wetland\Palisades III Wetland Delineation.docx LANDAU ASSOCIATES 3-1 Surface Waters The City of Federal Way Stream Ratings Map (Appendix A, Figure A-6) identifies the open water area and perimeter of the associated island identified on the mapping sources described above in the project area as wetland. The Stream Ratings Map identifies Stream 0390C-1 as a Major Stream adjacent to the open water area. However, there were no fish species identified within Stream 0390C-1 in the WDFW SalmonScape mapping system (WDFW 2011). Precipitation Precipitation data for the 3-month period prior to the field investigation in the Puget Sound Lowlands (National Climatic Data Center website 2011) indicate recorded precipitation levels were within the normal range for February, however, they were above the normal range for the months of December, January, March and April as listed in NRCS WETS tables (USDA, NRCS website 2002) (Appendix C) and as shown in the table below: Normal (a) Lower Limit Upper Limit Month Year of Normal of Normal Recorded (b) December 2010 3.94 6.68 7.98 January 2011 3.58 6.10 6.20 February 2011 2.73 5.02 3.26 March 2011 2.77 4.40 6.00 April 2011 1.71 3.11 4.83 (a) USDA NRCS 2002 (b) NCDC 2011 3.2 FIELD INVESTIGATION Landau Associates project scientist, Jessica Stone, conducted field investigations on March 29 and on May 4, 2011. This time period was within of the official growing season recognized by the Seattle District USACE (1994). The weather during the site investigation in March consisted of rain and temperatures in the low 50s. In May it was sunny and in the mid 50s. A sampling point was recorded in areas suspected to meet the mandatory wetland criteria, and nearby upland to determine corresponding wetland/upland boundaries. The wetland boundary was delineated using numbered flagging. Detailed information on soils, vegetation, and hydrology was recorded at two sampling points within the wetland and upland location, as shown on Figure 2. The boundary of one wetland was delineated and boundaries extending off site were estimated based on aerial photographs and existing background information. The sampling point locations and 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetland Delineation.doa LANDAU ASSOCIATES . 3-2 I delineated system are shown on Figure 2, and the completed data sheets describing the sampling points and site photographs are provided in Appendix D and Appendix E, respectively. Wetland rating information is included in Appendix F. 3.2.1 WETLAND A 1 Wetland A is approximately 66,371 ft2 (1.5 acres), approximately 50,000 ft2 of which was delineated, and consists of a man-made pond located to the west of 44t' Avenue Southwest (see Figure 2). Wetland A is identified on the NWI map as a PUBH wetland, the City of Federal Way Stream Ratings Map as wetland, and USGS topographic map and USDA NRCS Web -Soil Survey as an area of open water (Appendix A, Figure A-1, A-3, A-5 and A-6). Sampling point DP-02 was recorded to describe the wetland and is located northeast of the permanently flooded area. Two upland sampling points; Sampling Point DP-01 located between the pond and 40 Avenue Southwest and Sampling Point DP-03 located between the pond and 3080' Street Southwest (DP-03) were recorded to describe the upland conditions. Based on soil, hydrology, and vegetation conditions near the wetland (Section 3.2.1.5), the wetland is primarily contained within permanently flooded (i.e. the ponded) area. Two grated culverts maintain the water level within the wetland and prevent overbank flooding (Section 3.2.2). 3.2.1.1 Vegetation Wetland A is dominated by hydrophytic vegetation located along the water's edge and in the shallower areas of the pond. The dominant plant species observed within sampling point DP-O 1 include: Cattail (Typha latifolia., OBL) • Spirea (Spiraea douglasii, FACW) ■ Red alder (Alnus rubra, FAC). Additional non -dominate species include veronica (Veronica americana, OBL), curly dock J(Rumex crispus, FAC), big -leaf avens (Geum macrophyllum, FACW), and creeping butter cup (Ranunculus repens, FACW). Pondweed (Potamogeto sp., OBL) was observed outside the sampling point in the pond. J3.2.1.2 Soils The soils in Sampling Point DP-02 are characterized as a hydrogen sulfide; the soil contained a Jdistinct hydrogen sulfide odor (hydric soil indicatory A4). From 0 to 3 inches below ground surface (BGS), the soils were very dark grayish brown (2.5Y 3/2) silty loam with high in organic material, and 6/13/11 \\tacomal\data\DATA\PROJECT\656\004.010\R\Welland\Palisades III Welland Delinealion.dou LANDAU ASSOCIATES 3-3 very dark gray (2.5Y 3/1) sandy loam with dark yellowish.brown (10YR 4/4) redox features from 3 to 16 BGS. 3.2.1.3 Hydrology The primary indicators of wetland hydrology observed at sampling point DP-02 are surface water (indicator Al), high water table (indicator A2), and saturation to the surface (indicator A3). Wetland A receives its hydrology from perched groundwater over glacial till, from surface water runoff, and from stormwater conveyed to the pond from a roadside ditch and culvert along 44"' Avenue Southwest that drains into the pond. 3.2.1.4 Wetland Determination All three mandatory wetland criteria are satisfied for Wetland A. Landau Associates classified Wetland A as a palustrine emergent/unconsolidated bottom, permanently flooded (PEM/ depressional (Cowardin/HGM classification) wetland. Using the Ecology wetland rating form, Wetland A is rated as a Category III wetland, with a total score of 32. Wetland A scored highest for habitat functions, receiving a score of 20. Hydrologic functions received a score of 8 and water quality received a score of 4. In accordance with the FWRC, Category III wetlands greater than 10,000 ftz require a 50-ft buffer. 3.2.1.5 Upland Characterization The upland area adjacent to Wetland A is characterized by Sampling Point DP-01 and DP-03, which do not satisfy all of the three mandatory wetland criteria (see Figure 2 and Appendix D). Sampling Point DP-01 is located at the edge of the ROW of 40 Avenue SW between 44th Avenue SW and the edge of Wetland A, and DP-03 is located between Southeast 308th Street and the edge of the Wetland A (Figure 2). No wetland hydrology indicators were observed within the upland Sampling Points surrounding Wetland A. Vegetation at sampling point DP-01 consisted of forest cover with a scrub -shrub understory. Vegetation at sampling point DP-03 consists of mowed grasses which are assumed to be hydrophytic (FAC). Dominant vegetation in uplands adjacent to Wetland A include: • Red alder (Alnus rubra, FAC) • Japanese knotweed (Polygonum cuspidatum, FACU) Salmonberry (Rubus spectabilis, FAC) Indian -plum (Oemleria cerasiformis, FACU) 6/13/11 \\tacomal\data\DATA\PROJECn656\004.010\R\Welland\Palisades III Wetland Delineation.docx LANDAU AssocIATE$ 3-4 I I J J J J ■ Fringe cup (Tellima grandiflora, FACU) ■ Grasses (area is mowed; grasses did not have inflourescence or other distinguishable features useful for identification to genus or species. Species present assumed to be FAC based on growing conditions.) Additional non -dominant species in adjacent uplands include Himalayan blackberry (Rubus armeniacus, FACU), velvet grass (Holcus lanatus, FAC) and common dandelion (Taraxacum. oflicinale, FACU). During the field investigation, the soil within the upland sample point DP-01 was moist, but not saturated to depth necessary to satisfy the wetland hydrology parameter. The soils were very dark gray (10YR 3/1) sandy loam from 0 to 13 inches BGS and were very dense with fine to coarse woody roots. From 13 to 16 inches BGS the soils consisted of black (10YR 2/1) sandy loam and the soil contained a larger granular structure and fewer roots. Soils at sampling point DP-03 consisted of black (10YR 2/1) loamy sand from 0 to 5 inches BGS, then very dark brown (10YR 2/2) loamy sand from 5 to 12 inches. Soils from 12 to 18 inches were brown (10YR 4/3) silty sand with dark yellowish brown (10YR 4/4) redox features. No hydric soil indicators were observed in the upland sampling points. 3.2.2 STREAM 0390C-1 Stream 0390C-1 is a permanently flowing stream that receives hydrology from two culverts located at the eastern edge of Wetland A (see Figure 2). One culvert has a grated cover at the surface elevation of the pond. A second culvert is at the water surface elevation of the ponded area of the wetland and is adjacent to the 44'" Street Southwest road prism. Photograph 5, Figure E-3, in Appendix E shows the two culvert openings. Based on the project survey, as shown on Figure 2, it appears as though the two culverts drain water from the ponded wetland area, connect under 440' Street Southwest, and have a combined outfall structure on the east side of the roadway into Stream 0390C-1. From the culvert under 440' Street Southwest, Stream 0390C-1 flows east to west into Dumas Bay Park, and then flows north into Dumas Bay. Stream 0390C-1 is listed as a Major Stream, by the City of Federal Way Stream Ratings Map (see Appendix A, Figure A-6 in). However, no fish are shown to be present in Stream 0390C-1 in the WDFW SalmonScape mapping system (WDFW 2011). The setback area for a major stream includes all areas within 100 ft outward from the ordinary high water mark of a major stream, however, the setback area to the west of Stream 0390C-1 is interrupted by 44t11 Avenue SW. 6113/11 Y:\658\004.010\R\Wetland\Palisades III Wetland Delinea0on.docx LANDAU ASSOCIATES A 3-5 I I 4.0 PROJECT IMPACT ASSESSMENT AND MITIGATION As previously stated, the intent of the project is to provide reliable water service, and thus necessary to replace the aging portions of the system with dependable materials and locate facilities such that Tacoma Water will have continuous access. This will include installing one fire hydrant and replacing the water pipelines within 200 ft of the delineated wetland area and Stream 0390C-1. This part of the project is within the existing roadway of 44"' Avenue SW and SE 308"' Street, 44"' Avenue SW consists of asphalt and SE 308tt' Street consists of a compacted soil surface. A fire hydrant will be installed within the ROW adjacent to 44"' Avenue SW. Both roadways are within the buffer of Wetland A. The excavation for pipeline replacement will occur within the existing roadways. Excavation and installation of the fire hydrant will extend several feet into the vegetated buffer of Wetland A as shown on Figure 2. 4.1 AVOIDANCE/MINIMIZATION The proposed project is an essential public facility/utility and regulated under the FWRC. Replacement of the water pipelines will be entirely within the existing roadways of 40' Avenue SW and SE 3080' Street. Although these roadways are within the 50 ft buffer area of Wetland A, they are in a permanently altered state and do not provide any buffer functions. Therefore, the work does not impact Wetland A or a functioning buffer area of Wetland A, Stream 0390C-1, associated culverts of Stream 0390C-1 or the setback area of Stream 0390C-1. The fire hydrant will be located adjacent to the 44`h Avenue SW road prism and entirely within the road's ROW area. All equipment staging will be located away from the wetland and outside of the wetland buffer and from Stream 0390C-1 and its surrounding setback area. No trees or large shrubs will be removed within 200 ft of Wetland A or Stream 0390C-1. Best management practices (BMPs) will be used to prevent stormwater or construction materials from entering the wetland or Stream 0390C-1. The buffer area of Wetland A is currently in a permanently altered state due to the presence of 44th Avenue SW located entirely within the wetland's 50 ft buffer area. The proposed project, to include the fire hydrant installation, will not impact or reduce any of the wetland or wetland buffer's functions or J values. The proposed project will not adversely affect water quality, wetland or buffer habitat, drainage or stormwater capabilities, cause unstable earth conditions or erosion hazards. The proposed project will have a positive impact on public and private property by upgrading an essential public facility/utility and by providing a fire hydrant to the area to protect adjacent private residences. i 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetland Delineation.dom LANDAU ASSOCIATES 4-1 4.2 UNAVOIDABLE IMPACTS The fire hydrant will be installed within the ROW of 401 Avenue SW between 40' Avenue SW and Wetland A. Buffer vegetation near the fire hydrant location is described in sampling point DP-01 (Section 3.2.1.5), and is dominated by Japanese knotweed (Polygonum cuspidatum), Indian plum (Oemleria cerasiformis), salmonberry (Rubus spectabilis), and grasses along the road prism and roadside. Installation of the fire hydrant and its associated waterline will cause minimal ground disturbances. The fire hydrant, which contains a footprint of less than 2 ft2, will permanently remain in the wetland buffer area. Additionally, there is a potential for soils and vegetative surfaces adjacent to 440' Avenue SW and SE 308a' Street in the roadway prism to be temporarily impacted during the replacement of the water pipeline due to heavy equipment. 4.3 MITIGATION All soils temporarily disturbed as a result from the installation of the fire hydrant or potentially impacted by the pipeline replacement will be re -graded to their original condition and re -vegetated with a native hydroseed mix. This is consistent with the current buffer vegetation within the ROW. All re - vegetation will be in -place and will not extend beyond the temporarily disturbed areas. 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetland DelineaGon.docx LANDAU AssocIATES 4-2 -1 5.0 USE OF THIS REPORT The findings presented herein are based on our understanding of the Federal Way Municipal Code, the USACE and Ecology wetland delineation methodology, and on our interpretation of the vegetative, soil, and hydrology conditions observed during the site reconnaissance on March 29 and on May 4, 2011. Within the limitations of scope, schedule, and budget, the findings presented in this report were prepared in accordance with generally accepted sensitive area investigation principles and practices in this locality at the time the report was prepared. We make no other warranty, either expressed or implied. This report was prepared for the use of Tacoma Water and applicable regulatory agencies. No other party is entitled to rely on the information, conclusions, and recommendations included in this document without the expressed written consent of Landau Associates. Further, the reuse of information, conclusions, and recommendations provided herein for extensions of the project or for any other project, without review and authorization by Landau Associates, shall be at the user's sole risk. Wetland areas delineated by Landau Associates are considered preliminary until the USACE and/or local jurisdictional agencies validate the wetland boundaries. Because wetlands are dynamic communities, wetland boundaries may change over time. The agencies typically recognize wetland delineations for a period of five years following an approved jurisdictional determination. In addition, changes in government code, regulations, and/or laws may occur. This document has been prepared under the supervision and direction of the following key staff. LANDAU ASSOCIATES, INC. J Jessica C. Stone Project Scientist Theresa M. Turpin Associate Planner JCS/TMT/jrc 6/13/11 Y:\658\004.010\R\Wetland\Palisades III Wetland Delineation. docx LANDAU ASSOCIATES 5-1 1 j I I I j J 6.0 REFERENCES Brinson, M. 1993. Final Report: A Hydrogeomorphic Classification for Wetlands. Wetlands Research Program Technical Report WRP-DE-4. East Carolina University, Biology Department. Greenville, North Carolina. Prepared for U.S. Army Corps of Engineers. August. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Government Printing Office. Washington, D.C. Ecology. 1997. Washington State Wetlands Identification and Delineation Manual. Publication No. 96-94. Washington State Department of Ecology. Olympia, Washington. March. Federal Way. 2005. City of Federal Way Stream Rating Map. City of Federal Way GIS Division. Available at htip:!/www.cityoffederalway.com/Pa e.as x?view--3 9. January. Greytag Macbeth. 1994. Munsell Soil Color Charts. New Windsor, New York. Hruby, T. 2004. Washington State Wetland Rating System for Western Washington — Revised. Publication No. 04-06-025. Washington State Department of Ecology. Olympia, Washington. NCDC. 2011. Divisional Data. National Climatic Data Center website. littp-//www7.nedc.noaa.gov/CDO/CDODivisionaISelect.isp#. Accessed May 09. Reed, P.B., Jr. 1993. National List of Plant Species That Occur in Wetlands: Northwest (Region 9). Available at hh!W://www.fws.&Qv/nwi/bha/]ist88.htm1. U.S. Fish and Wildlife Service Biol. Rep. 88 (26.9). Washington, D.C. Reed, P.B., Jr. 1988. National List of Plant Species that Occur in Wetlands: 1988 National Summary. Available at http:l/www.fws.goov/nwi/bhallist88.html. U.S. Fish and Wildlife Service. USACE. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). Technical Report ERDC/EL TR-10-3. U.S. Army Corps of Engineer Research and Development Center Environmental Laboratory. Vicksburg, Mississippi. May. USACE. 1994. Washington Regional Guidance on the 1987 Wetland Delineation Manual. U.S. Army Corps of Engineers, Seattle District Regulatory Branch. May 23. USACE. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1. U.S. Army Corps of Engineers Waterways Experiment Station. Vicksburg, Mississippi. March. USDA, NRCS website. 2011. National Hydric Soils List. htt ://soils.usda. ov/use/hdric/. U.S. Department of Agriculture, Natural Resources Conservation Service. Accessed March 28. USDA, NRCS. 2006. Field Indicators of Hydric Soils in the United States. Version 6.0. Available at littp.//soils.-usda.gov/use/hydric . G.W. Hurt and L.M. Vasilas, eds. U.S. Department of Agriculture, Natural Resources Conservation Service in cooperation with the National Technical Committee for Hydric Soils. 6/13/11 Y:\658\004.010\R\WeUand\Palisades III Wetland Deli neation.docx LANDAU ASSOCIATES 6-1 USDA, NRCS website. 2002. Climate Information — Wetlands Retrieval for Washington, WETS Station: Seattle Tacoma. WSCMO. btip://www.wcc.nrcs.usda.p ovlc binl etwetco. ]?state=wa. Accessed March 28, 2011. USDA, NRCS website. 2007. Aldenvood Series. htt ://www2.ftw.nres.usda. ov/osd/dat/A/ ALDERWOOD.html. U.S. Department of Agriculture, Natural Resources Conservation Service. Accessed January 04, 2011. USFWS. 2011. National Wetlands Inventory Map. U.S. Fish and Wildlife Service. Available at http:llwww.fws.govlw_e_tlandslDatalindex.html. Accessed March 23. WDFW. 2011. SalmonScape. Available at http://wdfw.wa.gov/iiiapping/�salinonscape/index.btinl. ovfnaappinsfsalmonscape/index.btml. Washington Department of Fish and Wildlife. Accessed June 2. 6/13/11 Y:\656\004.010\R\Wetland\Palisades III Wetand Delineaticn.docx LANDAU ASSOCIATES 6-2 Puget Sound Dumas Bay Project Location is Ba.y.Park�, 1 1 1 I a'es Pa y T l ,Fede�alNCNa �71 ,y,, L ile Lake l .. — -1 i Bane Lake 1 p , �AfizSho'eGolfC (sa flmmencement Bay J C sGenl•HeiTht.f a E 1 T 0 o_s 1 rn YS N Miles S — Data Source: ESRI 2008 m s Palisades III Main ' Replacement Project 1ALANDAU Wetland Report ASSOCIATES Federal Way, Washington 1�E 1 i zA 1, I I 4Q Everett $CatilE Spokane 7acons= Washington Granger Project � Vicinity Map Figure 1 r v % N —0 LL 0Q )k/ )%a �f \ \ mrg %0a 7 \ CU \ � CD �k/) I \ \ 0� 2 ® \ 4) ' © = \ m j \ 22 § _ - ` ����-- - gEmu#¥m#_ § z� \ 7 2 \\ §@ §I {® \ \ƒ — n . G §/ f \ c : / r \ cƒ E5 §+=\I\ r CA(D § §=Ec/ 2f)/_ lu CD a) \ ) § ƒ \ / 2 /55 \ 2 / \ k k § 00E o 2 $ K § / \ \ 7 a 2 \ c Cl [ » \ ® 7 ) s E § k / ` ° f ƒ ) \ k k \ k .IL �\ j . k \ 7k 4 t-1-09 > 41 > m N3ov M C L cn co p M M r_ C: rm M w CD w =3 CL m CL j. 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The U.S. Fish and Wildlife Service has More than 50 percent of the dominant plants totaled from all vegetation strata are hydrophytic, i.e., those species with indicators of OBL, FACW, or FAC 1. Dominance: The dominant plants and their wetland indicator status are evaluated quantitatively within data plots and visually throughout the study area. If the test for (a) assigned a wetland indicator to each plant species that denotes its frequency of occurrence within (regardless of modifier), or dominance fails, and indicators of wetland soils and hydrology are present, the Prevalence wetlands (Reed 1988 and 1993). These are: • Obligate (OBL) wetland plants occur almost always in wetlands under natural conditions (more A plant community has a visually estimated cover percentage of OBL and FACW Index is calculated. than 99 percent of the time). species that exceeds the coverage of FACU and UPL specles. it dominance is • Facultative wetland (FACW) plants usually occur in wetlands (67 to 99 percent of the time) but not met, the Prevalence Index is calculated, or consideration is given to morphological adaptations and/or non -vascular plants observed. 2. Prevalence Index: A weighted average of the percent cover of each indicator status is are occasionally found in nonwetlands. • Facultative (FAC) plants are equally likely to occur in wetlands or nonwetlands (34 to 66 calculated (see data sheets in Appendix D). An index of 3 or less is considered meeting the percent of the time). hydrophytic vegetation criterion. If the Prevalence Index is not met, the consideration is given • Facultative upland (FACU) plants usually occur in nonwetlands, but are occasionally found in to morphological adaptations andfor non -vascular plants. wetlands (1 to 33 percent of the time). • Obligate upland (UPL) plans almost always occur in uplands (more than 99 percent of the time). 3. Morphological Adaptations/Non-Vascular Plants: Some plants develop recognizable * Tentative assignment based on limited information from which to determine the indicator status. morphological adaptations when occurring in wetland areas. These features must be observed on >50 percent of the individuals of an FACU species living in an area where indicators of hydric soils and wetland hydrology are present. Wetland non -vascular plants can include bryophytes (mosses, liverworts, hornworts). The cover of wetland bryophytes must be >50 percent of the total bryophyte cover in a plot in coastal Washington forested wetlands. Wetland Soils (b) Sails are classified as hydric, or they possess characteristics that are associated with reducing soil Hydric soils have an identifiable color pattern, which occurs if the soil is flooded, or for a long period of time. Faint or washed-out A shovel is used to dig holes at least 20 inches BGS at multiple locations in the study area. Direct observation of the soil is made at multiple locations in both wetlands and uplands, as conditions, A hydric soil is formed under conditions of saturation, flooding, or ponding long enough during the growing season to develop anaerobic conditions in the upper part of the soil. saturated, ponded colors typically form in the soil, and mottles of bright color, such as rust (known applicable. Soil organic content is determined visually and texturally, and soil color is the Munsell color chart (Greytag Macbeth 1994). Depth to water as redoxymorphic features), forth. Accumulations of organic matter at the surface, a sulfur odor, and organic matter stains may also be present. determined using soil saturation and/or inundation is also observed (see Wetland Hydrology). The characteristics "sandy "loamy observed are compared to the hydric soil indicators for "all soils," soils," and clayey soils,' as described in the USACE Regional Supplement (USAGE 2010); and for hydric soils indicators as described in the Ecology wetland delineation manual (Ecology 1997). Wetland Hydrology The area is inundated either permanently or periodically at mean water depths less than or equal to Primary indicators of welland hydrology include surface inundation (standing water), saturated soils, water marks, drift lines, sediment deposits, and drainage During investigation of soils, soil pits are allowed to stand for up to 20 minutes in order to allow percolation of any groundwater into the pit to determine groundwater level in the soil profile. (c) 6.6 It, or The soil is inundated or saturated to the surface for at least 14 consecutive days during the growing patterns. Secondary indicators of hydrology include water -stained leaves, or local soil survey data for identified soils. In the Additional digging may occur to 24 inches BGS during the dry season to investigate groundwater levels. In addition, the extent of soil saturation and presence/absence of season (d). oxidized root channels, absence of any primary indicators, at least two secondary indicators are required oxidation are determined in the soils removed as part of the soils investigation (see Wetland to meet the wetland hydrology criterion. Soils). Other indicators of wetland hydrology are observed at ground surface. Notes: (a) Categories were originally developed and defined by the USFWS National Wetlands Inventory and subsequently modified by the National Plant List Panel. (b) USACE 1987 2010; USDA, NRCS 2006. (c) USACE 1987. 2010. (d) The growing season Is the time during which two or more non -evergreen vascular plant species growing in a wetland or surrounding area exhibit biological activity, such as new growth. Growing season can also be determined by soil temperature. LANDAU ASSOCIATES 6/13/11 YA658\004.01MMetland\Welland Delineation_tb1.docx APPENDIX B Soil Profile Reports LOCATION ALDERWOOD WA Established Series Rev. AD/RJE/NTR 04/2007 I ALDERWOOD SERIES The Alderwood series consists of moderately deep to a cemented pan, moderately well drained soils formed in glacial till. Alderwood soils are on glacially modified foothills and valleys and I have slopes of 0 to 65 percent. The average annual precipitation is about 40 inches, and the mean annual temperature is about 50 degrees F. TAXONOMIC CLASS: Loamy -skeletal, isotic, mesic Vitrandic Dystroxerepts TYPICAL PEDON: Alderwood gravelly ashy sandy loam - forested. (Colors are for moist soil unless otherwise noted.) Ap--O to 7 inches; very dark grayish brown (I OYR 3/2) gravelly ashy sandy loam, brown (1 OYR 5/3) dry; moderate fine granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many fine roots; few fine irregular pores; slightly acid (pH 6.2); abrupt smooth boundary. (3 to 7 inches thick) 1 Bwl--7 to 21 inches; dark yellowish brown (1 OYR 4/4) very gravelly ashy sandy loam, yellowish brown (1 OYR 5/4) dry; weak medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; many fine roots; many fine tubular and irregular pores; 35 percent gravel; diffuse smooth boundary; slightly acid (pH 6.2). 1 Bw2--21 to 30 inches; brown (1OYR 4/3) very gravelly ashy sandy loam, pale brown (l OYR f 6/3); dry; weak medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; common fine roots; few very fine tubular pores; 40 percent gravel; slightly acid (pH 9 6.2); clear wavy boundary. (Combined Bwl and Bw2 horizons are 15 to 30 inches thick) j 2Bg--30 to 35 inches; 50 percent olive brown (2.5Y 4/4) very gravelly sandy loam, light yellowish brown (2.5Y 6/4) dry and 50 percent dark grayish brown (2.5Y 4/2) iron-mangenese nodules with strong brown (7.5YR 5/6) coatings on fragments, light brownish gray (2.5Y 6/2) and reddish yellow (7.5YR 6/6) dry; massive; slightly hard, very friable, nonsticky and j nonplastic; few fine roots; common fine tubular and interstitial pores; 45 percent gravel; J moderately acid (pH 6.0); abrupt wavy boundary. (0 to 15 inches thick) 2Cd1--35 to 43 inches; dark grayish brown (2.5Y 4/2) very gravelly sandy loam, light brownish gray (2.5Y 6/2) dry; dark yellowish brown (1 OYR 4/4), olive (5Y 4/4), yellowish red (5YR 4/6) and strong brown (7.5YR 5/6) in cracks; massive; extremely hard; extremely firm, nonsticky and nonplastic; few fine roots; few fine tubular pores; 40 percent gravel; moderately acid (pH 6.0); abrupt irregular boundary. (5 to 20 inches thick) 2Cd2--43 to 60 inches; grayish brown (2.5Y 5/2) dense glacial till that breaks to very gravelly sandy loam, light gray (2.5Y 7/2) dry; massive; extremely hard, extremely firm, nonsticky and nonplastic; 40 percent gravel; moderately acid (pH 6.0). TYPE LOCATION: Snohomish County, Washington; about 5 miles east of Lynnwood on Maltby road; 200 feet south and 400 feet east of the center of sec. 28. T. 27 N., R. 5 E. RANGE IN CHARACTERISTICS: The mean annual soil temperature is estimated to range from 47 to about 55 degrees F. These soils are usually moist, but are dry between depths of 8 and 24 inches for 60 to 75 consecutive days in the summer in most years. The soil is strongly acid to slightly acid above the 2Cdl horizon and slightly acid or moderately acid in the 2Cd1 horizon. Depth to 2Cd1 horizon is 20 to 40 inches. Rock fragments in the particle -size control section range from 35 to 50 percent total including 35 to 50 percent gravel and 0 to 10 percent cobbles. The A horizon has hue of 1 OYR or 7.5YR, value of 2 or 3 moist, 3 through 5 dry, and chroma of 2 to 4. It has weak or moderate granular structure. Some pedons have an E horizon less than 1 inch thick. The BwI and Bw2 horizons have hue of IOYR or 7.5YR, and value and chroma of 2 through 6 dry or moist. It is very gravelly loam or very gravelly sandy loam and has weak or moderate blocky structure. The Bw 1 is gravelly loam in some pedons. This horizon contains none to many hard concretions presumed to be of iron and manganese compounds. The 2Bg horizon, or the 2BC or 2CB horizon has hue of 1 OYR or 2.5Y, value of 5 through 7 dry, and chroma of 2 through 4 moist and dry. They have redox concentrations in some pedons, but lack depletions of 2 or lower chroma within 30 inches of the surface. These horizons are very gravelly sandy loam or very gravelly loam. They have weak subangular blocky structure or are massive. The 2Cd horizons (densic layers) have hues of 10YR or 2.5Y, value of 4 through 8 dry, and chroma of 1 through 3 moist and dry and are mottled in some pedons. It is very gravelly sandy loam, very gravelly loamy sand, gravelly sandy loam, or gravelly loamy sand when crushed. COMPETING SERIES: These are the Baldhill, Neausite, Dabob, Fidalgo, and Whistle series. The Baldhill soils are very deep and lack densic materials. The Beaustie and Fidalgo soils are 20 to 40 inches deep to a lithic contact. The Whistle soils are 40 to 60 inches deep to a lithic contact. Dabob soils have an albic horizon and lack densic materials within 60 inches. GEOGRAPHIC SETTING: These soils are on till plains and moraines at elevations of 0 to about 800 feet. Slope is 0 to 65 percent. The soils formed in glacial till. Alderwood soils are in a cool marine climate. The summers are cool and dry, and the winters are mild and wet. Mean annual precipitation ranges from 25 to 60 inches, most of which falls as rain from November through March. Mean January temperature is 38 degrees F, mean July temperature is 60 degrees F, and mean annual temperature is 50 degrees F. The growing season (28 degrees F) is about 200 days. GEOGRAPHICALLY ASSOCIATED SOILS: These are the Beausite, Dick, Everett, Hoogdal, Indianola, Kiisap, Norma, Quilcene Skipopa and Whidbey series. All of these soils except Whidbey soils lack a deaisic layer within 40 inches. in addition, the Beausite soils have a lithic contact at 20 to 40 inches. Dick, Hoogdal, Indianola, Kitsap, and Skipopa soils have less than 35 percent coarse fragments. Everett soils are sandy -skeletal. McKenna soils have an aquic moisture regime. Norma soils have an aquic moisture regime of less than 35 percent coarse fi-agments in the upper part of the control section. Quilcene soils are in a fine family. Whidbey soils have an E horizon 2 to 5 inches thick and have a higher base status. DRAINAGE AND PERMEABILITY: Moderately well drained; slow to medium runoff, moderately rapid permeability to the densic layer and very slow permeability below. A perched water table is as high as 18 to 36 inches at times from January through March. USE AND VEGETATION: Used mostly for woodland, field crops, hay and pasture, orchards, vineyards, wildlife habitat, watershed, and non -farm uses. The native vegetation is Douglas -fir, western hemlock, western redcedar, and red alder with an understory of salal, Oregon -grape, western brackenfern, western swordfern, Pacific rhododendron, huckleberry, red huckleberry, evergreen huckleberry, and Orange honeysuckle. DISTRIBUTION AND EXTENT: Northwestern Washington; MLRA 2. The series is ' extensive. MLRA OFFICE RESPONSIBLE: Portland, Oregon SERIES ESTABLISHED: Snohomish County, Washington 1936. 1 REMARKS: Classification only changed 4/94 because of recent amendments to Soil Taxonomy, except the horizon nomenclature was updated, and fragments of ortstein and ortstein were changed to iron-mangenese nodules and a densic layer. Classification changed 1/2000 from mixed, mesic Vitrandic Durochrepts to isotic, mesic Vitrandic Dystroxerepts based on revision to Soil Taxonomy. Diagnostic horizons and features include: Ochric epipedon Cambic horizon - from 7 to 35 inches Densic material - from 43 to 60 inches Vitrandic feature - assumed to be from 0 to 30 inches Oxyaquic feature - perched water table of 18 to 36 inches at times from January to March. All depths to diagnostic horizons and features noted in the range of characteristics are measured from the top of the first mineral horizon. More investigation is needed to differentiate the Alderwood from the Dabob series. ADDITIONAL DATA: Partial data available for this series. Sample # S71 WA-033-002, Riverside Lab., 11/73. JNational Cooperative Soil Survey U.S.A. Map Unit Description: Alderwood gravelly sandy loam, 6 to 15 percent slopes — King County Area, Washington King County Area, Washington AgC—Alderwood gravelly sandy loam, 6 to 15 percent slopes Map Unit Setting Elevation: 50 to 800 feet Mean annual precipitation: 25 to 60 inches Mean annual air temperature: 48 to 52 degrees F Frost -free period: 180 to 220 days Map Unit Composition Alderwood and similar soils: 95 percent Minor components: 5 percent Description of Alderwood Setting Landform: Moraines, till plains Parent material: Basal till with some volcanic ash Properties and qualities Slope: 6 to 15 percent Depth to restrictive feature: 24 to 40 inches to dense material Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 37 inches Frequency of flooding: None Frequency of ponding: None Available water capacity: Very low (about 2.5 inches) Interpretive groups Land capability (nonirrigated): 4s Typical profile 0 to 12 inches: Gravelly sandy loam 12 to 27 inches: Very gravelly sandy loam 27 to 60 inches: Very gravelly sandy loam Minor Components Norma Percent of map unit. 1 percent Landform: Depressions Bellingham Percent of map unit: 1 percent Landform: Depressions Seattle Percent of map unit. 1 percent Landform: Depressions Tukwila Percent of map unit. 1 percent USDA Natural Resources Web Soil Survey 3/28/2011 am Conservation Service National Cooperative Soil Survey Page 1 of 2 Map Unit Description: Alderwood gravelly sandy loam, 6 to 15 percent slopes — King County Area, Washington Landform: Depressions Shalcar Percent of map unit: 1 percent Landform: Depressions Data Source Information Soil Survey Area: King County Area, Washington Survey Area Data: Version 6, Sep 22, 2009 USDA Natural Resources Web Soil Survey 3/2812011 Conservation Service National Cooperative Soil Survey Page 2 of 2 J �r CA Z ov o� Co. CD CL � CD o v��� o3 3n G 7 n v Q- CD CD a vCDm Coo m ch� �- 3 m �0 5CD v a (p O N 7 0 N CS � CD U) 3 Cl) n � Cn rh -oh 0 CCL C M N � N C) o Q 3 o m -n �CD x C- a CD C N W,< co �� Fn B SD o C crn rn c.0 co 00 CD C Q 0 -h 0 C W CD 0 CO rn w 3 r� it o �v i; CD O CD EEOCD r ' cDn A n T ! cn Z o Q N (D .� U O (D O O CD 7 - - 1 • y.Z • ' CD v a m N O pN O 7 U) - IF n O < i CD O N U p (D 0 (D N � _O CD -0 7 O N O CDCD CD D 0 O D V "I CD �I 00 ® f N � r � I o w a i -n N l O CD o m o Q C C D 4 _ CDC N < fl1 m (D (CD N CD CD CDv �OCD N O cn CD (D (D (D (D U) O O ✓J (D (D % f (A 0 N� > 1 �� to D� 6: 1 I I fl I I I 4 d I I WETS Station : SEATTLE TCOMA WSCMO AP, WA7473 Creation Date: 09/10/2002 Latitude: 4727 Longitude: 12218 Elevation: 00400 State FIPS/County(FIPS): 53033 County Name: King Start yr. - 1971 End yr. - 2000 ----------f------_----p--------------------------------------------------- Temperature Precipitation [ (Degrees F.) I [ 1 ,_______________________I__-__________ [ I -(Inches) ___-________-______1 [ 30% chance Iavg I I [ I [ I [ will have 1# of[ avg I [------- -I-------[------- ----------------- days[ total Month [ avg I avg [ avg I avg less [ more w/.lf I snow I [ daily I daily [ I than [ than or fall [ max min [ I I [more - ----------- January ---------------------------------------------------------------� [ 45.8 35.9 [ 40.9 i 5.13 3.58 I 6.10 1 11 [ 2.4 I February [ 49.5 [ 37.2 [ 43.3 [ 4.18 2.73 I 5.02 10 1 1.3 [ March [ 53.2 [ 39.1 [ 46.2 3.75 [ 2.77 I 4.40 [ 10 [ 0.6 [ April [ 58.2 [ 42.1 [ 50.1 [ 2.59 [ 1.71 [ 3.11 [ 7 [ 0.1 I May 64.3 [ 47.2 [ 55.7 ! 1.77 [ 1.16 ! 2.13 [ 5 1 0.0 I June 69.5 [ 51.7 [ 60.6 [ 1.49 [ 0.96 ' 1.79 [ 4 [ 0.0 I July 75.2 [ 55.3 I 65.3 [ 0.79 [ 0.43 0.97 [ 2 [ 0.0 I 1 August f 75.5 [ 55.7 [ 65.6 [ 1.02 I 0.38 1.24 [ 2 I 0.0 11 September [ 70.1 [ 51.9 [ 61.0 [ 1.63 I 0.62 2.03 I 4 [ 0.0 October [ 59.7 I 45.7 I 52.7 [ 3.19 I 1.96 [ 3.86 7 I , 0.1 November 50.5 [ 39.9 I 45.2 I 5.90 f 4.10 I 7.02 13 1.1 1 December [ 45.4 [ 35.9 I 40.7 I 5.62 [ 3.94 [ 6.68 [ 11 [ 1.9 [ Annual' [ ----- [ ----- [ ----- ------ [ ------ [ 33.52 [ 1 40.09 [ I ----------[------- I ------- I----�- I 1 52.3-� _��_�_ -------I--------[--------+----[ _----- ------ -- -----I -----I -� '_Average- Total ---------- --59- � I ------- I I ------- 1--"-- I ------- I 37.07 [-------- I------ I------ I -------- ;-------- 1 86 I [----I------I 7.5 I GROWING SEASON DATES ----------------------------------------------------------------- I Temperature ------------------- �- ------_--------------------------------------- Probability 124 F or higher 1 28 F or higher 1 32 F or higher --__-----------------1------------------I----------------- I------------------ J 1 Beginning and Ending Dates Growing Season Length 50 percent * 1 1/20 to 12/28 I 2/ 7 to 12/ 8 [ 3/ 9 to 11/15 1 343 days 304 days I 252 days I 70 percent * > 365 days 1/31 to 12/15 I 3/ 3 to 11/21 1 > 365 days I 319 days I 263 days --------------------------------_-__----f--------_____----------------__---- * Percent chance of the growing season occurring between the Beginning Jand Ending dates. APPENDIX D Data Sheets WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project/Site: Palisades III Main Re lacement Project 2009-33 City/County: Federal Wav/Kino Sampling Date:312912011 Applicant/Owner: Tacoma Water State: Washington Sampling Point: DP-01 Investigator(s): Jessica Stone Section, Township, Range: Se ion 11 T 21 N. R3 Landform (hillslope, terrace, etc.): lence Local relief (concave, convex, none): Concave Slope (%): 0 Subregion (LRR): Northwest Forests and Coast LLR A Lat: 47' 19' 32" Long: 122° 23' 21" Datum: NAD 84 Soil Map Unit Name: King County Area Washinglon NWI classification: NIA funlandl Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation No, Soil No, or Hydrology No significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation No, Soil No, or Hydrology No naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transacts, important features, etc. I Hydrophytic Vegetation Present? Yes ❑ No ® Is the Sampled Area Hydric Soil Present? Yes ❑ No ® within a Wetland? Yes ❑ No Wetland Hydrology Present? Yes ❑ No Remarks: Sample plot is located near the edge of 44" Avenue Southwest right-of-way near a man-made pond and wetland area. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stralum (Plot size: 10 m) % Cover ? Status Number of Dominant Species 1. Alnus rubra 40 ves FAC That Are OBL, FACW, or FAC: 2 (A) 2. 3, 4. 40 = Total Cover SapiinalShrub Stratum (Plot size: 5 m 1. Polyaonum cusnidatum 50 yes FACU 2. Oemleria cerasiformis 25 yes FACU 3. Rubus soectabilis 25 yes FAC 4. Rubus armeniacus 1 no FACU 5. 101 = Total Cover Herb Stratum (Plot size: 3 m 1. Tellima grandifiora 5 yes FACU WA 3. 4. 5. 6. 7. 8. 9. 10. 11. Woody Vine Stratum (Plot size: 1. 2. % Bare Ground in Herb Stratum 95% Remarks: Ground surface primarily cc 5 = Total Cover = Total Cover of moss and bare ground surface. Total Number of Dominant Species Across All Strata: 5 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 40% (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by OBL species x 1 = FACW species x 2 = FAC species 65 x 3 = 195 FACU species 81 x 4 = 324 UPL species x 5 = Column Totals: 146 (A) 519 (B) Prevalence Index = B/A = 3_6 Hydrophytic Vegetation Indicators: ❑ Rapid Test for Hydrophytic Vegetation ❑ Dominance Test is >50% ❑ Prevalence Index is s3.0' ❑ Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) ❑ Wetland Non -Vascular Plants' ❑ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes ❑ No ED US Army Corps of Engineers Western Mountains, Valleys, and Coast —Version 2.0 SOIL Sampling Point: DP-01 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color L oist) % Color (mois9 % Tyne' Loc2 Texture Remarks 0-13 10 YR 3/1 100 sandy loam moist, many fine anqMngdy Mols 13-16 10 YR 2/1 100 sandy loam rne§l to wet, larger granular structure, few rgot�, noire rgots_ 'Type: C=C on central ion. D=De letion. RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 21-ocation: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soil Present? Yes ❑ No Remarks: Soil test -pit conducted between the pond and 44 ' Avenue Southwest roadway prism at a lower elevation then surrounding upland. The pond is man-made (date unkown, prior to 1998), assumed that the soils have been disturbed in the past. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators fmi_nimum of one required_Lcheckatl that apply) ❑ Surface Water (Al) ❑ Water -Stained Leaves (139) (except MLRA ❑ High Water Table (A2) 1, 2, 4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (1311) ❑ Water Marks (131) ❑ Aquatic Invertebrates (1313) ❑ Sediment Deposits (132) ❑ Hydrogen Sulfide Odor (C1) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Iron Deposits (135) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stressed Plants (D1) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ® No ❑ Depth (inches): 16 Secondary Indicators (2 or more required) ❑ Water -Stained Leaves (69) (MLRA 1, 2, 4A, and 413) ❑ Drainage Patterns (1310) ❑ Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (D3) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks (D7) Saturation Present? Yes ® No ❑ Depth (inches): 15.5 Wetland Hydrology Present? Yes ❑ No Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 WETLAND DETERMINATION DATA FORM —Western Mountains, Valleys, and Coast Region Project/Site: Palisades III, Main Replacement Project 2009-M City/County: Federalydny)Kirto Sampling Date:510412011 Applicant/Owner: Tacoma Water State: Washi_n I_ og n Sampling Point: DP-02 Investigator(s): Jessica atpne Section, Township, Range: Section 11 T 21 N. R3 E Landform (hillslope, terrace, etc.): terrace Local relief (concave, convex, none): Concave Slope (%): 0 Subregion (LRR): Northwest Forests and Coast (LLR A) Lat: 47' 19' 32" Long: 122" 23' 21" Datum: NAI7 84 Soil Map Unit Name: King County Area, Washington NWI classification: PUBH Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation No, Soil No, or Hydrology No significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation No, Soil No, or Hydrology No naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ® No ® Is the Sampled Area Hydric Soil Present? Yes ® No ® within a Wetland? Yes ® No ❑ Wetland Hydrology Present? Yes ® No Remarks: Sample plot is located at the very edge of the permanently ponded area. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Dominance Test worksheet: Tree Stratum (Plot size: 10 m) % Cover Sneci_ss? Status Number of Dominant Species 1. Alnus rubra 40 yes FAC That Are OBL, FACW, or FAC: 3 (A) 2 Total Number of Dominant 3, Species Across All Strata: 3 (B) 4. Percent of Dominant Species 40 = Total Cover That Are OBL, FACW, or FAC: 100%, (A/B) Sapling Shrub Stratum (Plot size: 5 m Prevalence Index worksheet: 1. Spiraea douglasii 50 yes FACW 2 Total % Cover of: MUItiDIv by: 3 OBL species x 1 = 4 FACW species x 2 = 5 FAC species x 3 = 50 = Total Cover FACU species x 4 = Herb S ra urn (Plot size: 3 m) UPL species x 5 = 1. Ty?ha iatifolla 60 yes OBL Column Totals: (A) (B) 2. Veronica americans! 10 no OBL 3. Rumex cris us 2 no FAC Prevalence Index = B/A = Hydrophytic Vegetation Indicators: 4. Ge m macro h Ilum 2 no FACW 5. Ranunculus re ens 1 no FACW ❑ Rapid Test for Hydrophytic Vegetation ® Dominance Test is >50% 6 ❑ Prevalence Index is :53.0' 7 ❑ Morphological Adaptations' (Provide supporting 8 data in Remarks or on a separate sheet) 9. ❑ Wetland Non -Vascular Plants' 10. ❑ Problematic Hydrophytic Vegetation' (Explain) 11. 'Indicators of hydric soil and wetland hydrology must 5 = Total Cover be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 1. Hydrophytic 2. Vegetation = Total Cover Present? Yes ® No ❑ % Bare Ground in Herb Stratum 25% US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 SOIL Sampling Point: DP-02 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type' Locz Texture Remarks 0-3 2.5Y 3/2 100 silty loam saturated, high_ in orgynjcs 3-16 2.5Y 3/1 97 10YR 4/4 3 C PL sandy loam saturated 'Type-, C=Concentration. D=De lesion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pare Lining. M =Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ® Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (176) 3Indicators of hydrophytic vegetation and ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type: Depth (inches); Hydric Soil Present? Yes ® No ❑ Remarks: Hydrogen sulfide odors were detected within the upper six inches of soil. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one reauired: check all that apply) ® Surface Water (Al) ❑ Water -Stained Leaves (139) (except MLRA ® High Water Table (A2) 1, 2, 4A, and 4B) ® Saturation (A3) ❑ Salt Crust (B11) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (613) ❑ Sediment Deposits (62) ® Hydrogen Sulfide Odor (Cl) ❑ Drift Deposits (B3) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Iron Deposits (65) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stressed Plants (D1) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) ❑ Sparsely Vegetated Concave Surface (68) Field Observations: Surface Water Present? Yes ® No ❑ Depth (inches): 1 5econdary Indicators (2 or more required) ❑ Water -Stained Leaves (139) (MLRA 1, 2, 4A, and 4B) ❑ Drainage Patterns (B10) ❑ Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (133) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks (D7) Water Table Present? Yes ® No ❑ Depth (inches): 4 Saturation Present? Yes ® No ❑ Depth (inches): to surface Wetland Hydrology Present? Yes ® No ❑ includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Data plot adjacent to a permanently ponded area. US Army Corps of Engineers Western Mountains, Valleys, and Coast —Version 2.0 WETLAND DETERMINATION DATA FORM — Western Mountains, Valleys, and Coast Region Project/Site: Palisa s III Main Re lacemgnt Proinct 2009-33 City/County: Federal WaylKing Sampling Date:3/29/2011 Applicant/Owner: Tacoma Water State: Washin ton Sampling Point: DP-03 Investigator(s): Jessica Stone Section, Township, Range: Section 11. T 21 N, R3 E Landform (hillslope, terrace, etc.): slope Local relief (concave, convex, none): none Slope (%): 3% Subregion (LRR): Northwest Forests and Coast_(LLR A) Lat: 47" 19' 32" Long: 122" 23' 21" Datum: WAD 84 Soil Map Unit Name: King County Area. Washington _ NWI classification: N/A (unland) Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation Yes, Soil No, or Hydrology No significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation No, Soil No, or Hydrology No naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ❑ No ® Is the Sampled Area Hydric Soil Present? Yes ❑ No ® within a Wetland? Yes ❑ No ED Wetland Hydrology Present? Yes ❑ No Remarks: Sample plot is located on the sloped, grassy upland between the pond and 3e Street. VEGETATION — Use scientific names of plants. Tfee Straftinl (Plot size: jkft 1. 2. 3. 4. Saoling/Shrub Stra im (Plot size: Lft 1. 2. 3. 4. 5. Herb Stratum (Plot size: 1. Mowed grasses 2. Holcus lanatus 3. Taraxacum officinale 4. 5. 6. 7. 8. 9. 10. 11. Woody Vine Stratum (Plot size: 1. 2. Absolute Dominant Indicator Dominance Testworksheet: % Cover Species? Status Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) Total Number of Dominant Species Across All Strata: 1 (B) = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100% (A/B) Prevalence Index worksheet: Total % Cover of: MUltiDly by: OBL species x 1 = FACW species x 2 = FAC species x 3 = = Total Cover FACU species x 4 = UPL species x 5 = 90 yes FAC Column Totals: (A) (B) 5 no FAC 1 no FACU Prevalence Index = B/A = Hydrophytic Vegetation Indicators: ❑ Rapid Test for Hydrophytic Vegetation ® Dominance Test is >50% ❑ Prevalence Index is 53.0' ❑ Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) ❑ Wetland Non -Vascular Plants' ❑ Problematic Hydrophytic Vegetation' (Explain) 5 = Total Cover 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation = Total Cover Present? Yes ® No ❑ % Bare Ground in Herb Stratum % j Remarks: The data plot is located on a mowed lawn adjacent to the wetland area. Grass species but are assumed to be FAC. US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 SOIL Sampling Point: DP-03 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type: LocZ Texture Remarks 0-5 10 YR 2/1 100 loamy sand moist 5-12 10 YR 2/2 100 loamy sand moist 12-18 10 YR 4/3 98 10YR 4/4 2 C M silty sand moist °T e: C=Concentration, D=De letion. RM=Reduced Matrix. CS=Covered or Coated Sand Grains. 'Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils': ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Very Shallow Dark Surface (TF12) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Other (Explain in Remarks) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) wetland hydrology must be present, ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) unless disturbed or problematic. Restrictive Layer (if present): Type. Depth (inches): Hydric Soil Present? Yes ❑ No ED Remarks: HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one reouired: check all that apply) ❑ Surface Water (Al) ❑ Water -Stained Leaves (69) (except MLRA ❑ High Water Table (A2) 1, 2, 4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (611) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (613) ❑ Sediment Deposits (132) ❑ Hydrogen Sulfide Odor (C1) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Iron Deposits (65) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Surface Soil Cracks (66) ❑ Stunted or Stressed Plants (D1) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) ❑ Other (Explain in Remarks) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Secondary Indicators 12 or more required) ❑ Water -Stained Leaves (B9) (MLRA 1, 2, 4A, and 4B) ❑ Drainage Patterns (1310) ❑ Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (D3) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks (137) Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — Version 2.0 APPENDIX E Selected Site Photographs I __J 1. Facing north at 44th Avenue Southwest 2. Facing northwest at the buffer of Wetland A and right-of-way between 44th Avenue Southwest and Wetland A. Tacoma Water Figure Palisades III Main Selected Site Photographs LANDAU Replacement Project E_ 1 ASSOCIATES Federal Way, Washington j 3. Sampling Point DP-1, facing west at the edge of the right-of-way between 40 Avenue Southwest and Wetland A. 4. Wetland A, facing northwest Tacoma Water Figure Palisades III Main Selected Site Photographs LANDAU Replacement Project E-2 14 ASSOCIATES Federal Way, Washington 5. The culvert openings adjacent to 441h Avenue Southwest that drain Wetland A and discharge into Stream 0390C-1. 6. Facing south at 44th Avenue Southwest at the location where the culverts cross under 44th Avenue Southwest. Tacoma Water Figure Palisades III Main Selected Site Photographs LANDAU Replacement Project E-3 14 ASSOCIATES Federal Way, Washington 1 -1 I I J J J 7. Culvert discharge into Stream 0390C-1 on the east side of 44th Avenue Southwest. 8. SE 308th Street and the north end of Wetland A, facing west. MLANDAU ASSOCIATES Tacoma Water Palisades III Main Replacement Project Federal Way, Washington Figure Selected Site Photographs C_^ J APPENDIX F Wetland Rating Form 1 Wetland name or number: Wetland A WETLAND RATING FORM — WESTERN WASHINGTON Version 2 — Updated July 2006 to increase accuracy and reproducibility among users Name of wetland (if known): Wetland A Date of site visit: 3/29/2011 Rated by; Jessica Stone Trained by Ecology? Yes X No Date of training: 6/18/200 ISEC: 11 TWNSHP: 21 North RNGE: 3 East Is S/T/R in Appendix D? Yes No_X 1 J_ j Map of wetland unit: Figure 2 Estimated size 66,371 SF SUMMARY OF RATING Category based on FUNCTIONS provided by wetland: I II III X IV Category I = Score > 70 Category II = Score 51 - 69 Category III = Score 30 — 50 Category IV = Score < 30 Score for Water Quality Functions Score for Hydrologic Functions Score for Habitat Functions TOTAL Score for Functions 4 8 20 32 Category based on SPECIAL CHARACTERISTCS of Wetland I II Does not apply X Final Category (choose the "highest" category from above") III Summary of basic information about the wetland unit. Wetland C�IR' Estuarine Natural Herita a Wetland Bo Mature Forest Old Growth Forest Coastal Lagoon Interdunal None of the above X eressional I Xiverineake-frine Slo Flats Freshwater Tidal Check if unit has multiple HGM classes present Does the wetland being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protecl the wetland according to the rc_acilatic?ns rcgaEdine the special characteristics found in the wetland. Cheek List for Wetlands 1`Ieeci Additional Protection YES Al to the prolec SP1. Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species (TIE species)? X For the purposes of this rating system, "documented" means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, "documented" means the X wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category 1 Natural Heritage Wetlands see p. 19 of data form). SP3. Does the wetland unit contain individuals o Priorit species listed b the WDFW or the state? X SP4. Does the wetland unit have a local significance in addition to its functions? For example, the X wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To corn lete the next M of the data sheet you will need to determine the H dro mo hie Class of the wetland being rated. The hydrogeomorphic classiEcation groups wetlands into those that function in similar ways. This s tMlifies the quesdons meded to annver how well the vxdand fiMons. TheHydrogaomorpluc Class ofa wetland can bedeterrT med using the key below. Seep.24 formoredeiailed moacbms on classifying wetlands. Wetland Rating Form — western Washington, version 2 (7/06) Page 1 of 9 Wetland name or number: Wetland A Classification of Vegetated Wetlands for Western Washington °,If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with ;multiple HGM classes. In this case, identify which hydrologic criteria in questions 177 apply, and go to Question 8. 1. Are the water levels in the entire unit usually controlled by tides (i.e. except during floods)? NO — go to 2 YES — the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES — Freshwater Tidal Fringe NO — Saltwater Tidal Fringe (Estuarine) Ifyour wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is a Saltwater Tidal Fringe it is rated as an Estuaizne wetland. Wetlands that were call estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the tern "Estuarine" wetland is kept. Please note, however, that the characteristics that define Category I and It estuarine wetlands have changed (see p. ). "entire wetland unit is flat and precipitation is only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. NO — go to 3 YES — The wetland class is Flats If your wetland can be classified as a "Flats" wetland, use the form for Depressional wetlands, 3. Does the entire wetland meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) where at least 20 acres (8ha) in size; At least 30% of the open water area is deeper than 6.6 (2 m)? NO — go to 4 YES — The wetland class is Lake -fringe (Lacustrine Fringe) 4. Does the entire wetland meet all of the following criteria? The wetland is on a slope (slope can be very gradual). The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these types of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than I foot deep). NO — go to 5 YES — The wetland class is Slope 5. Does the entire wetland meet all of the following criteria? The unit is in a valley or stream channel where it gets inundated by overbank flooding from that stream or river. The overbank flooding occurs at least once every two years. NOTE: The riverine unit can contain depressions that are filled with water when the river- is not flooding.. NO —go to 6 YES — The wetland class is Riverine 6, Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time of the year. This means that any outlet, if present is higher than the interior of the wetland. NO — go to 7 YES — The wetland class is Depressional 7. Is the entire wetland located in a very flat area with no obvious depression and no overbank flooding. The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. No — go to 8 YES — The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within your wetland. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the class listed in column 2 is less than 10% of the unit, classify the wetland using the class that represents more than 90% of the total area. HGM GXasse's within the Nvetland unit beiqk, rated :, ' ;, .. `; .`H6M Class to Use in Rating Slope + Riverine Riverine Slope + Depressional De sessional Slope + Lake -fringe Lake -fringe Depressional + Riverine along stream within boundary De ressional Depressional. + Lake -fringe Depressional Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE under wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating Form — western Washington, version 2 (7/06) Page 2 of 9 Wetland name or number: Wetland A score WATER QUALITY FUNCTIONS — Indicators that wetland functions to improve water quality. (only l per box) D 1 Does the wetland have the potential to improve water quality? (see p.38) D 1.1 Characteristics of surface water flows out of the wetland; Figure 2 g • Unit is a depression with no surface water leaving it (no outlet) ........................................... points = 3 • Unit has an intermittently flowing, OR highly constricted, permanently flowing outlet ........ points = 2 • Unit has an unconstricted, or slightly constricted, surface outlet (permanently flowing) ....... points = 1 • Unit is a "flat" depression (Q.7 on key), or in the Flats class, with permanent surface 1 outflow and no obvious natural outlet and/or outlet is a man-made ditch ........................... points = 1 (If ditch is not vermanent1v flowingtreat unit as "in term ittendy ffowing Provide Rhoto or drawing D 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS definitions) 0 YES pojnts = 4 NO points = 0 D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class): Figure F-1 • Wetland has persistent, ungrazed vegetation > = 95% of area ............................................... points = 5 • Wetland has persistent, ungrazed vegetation > = 1/2 of area.................................................points = 3 • Wetland has persistent, ungrazed vegetation > = I A 0 of area..............................................points = I 1 • Wetland has persistent, ungrazed vegetation < 1/10 of area..................................................points = 0 Map of CowardIn vegetation classes D 1.4 Characteristics of seasonal ponding or inundation: This is the area of the wetland Mat is pondedfor at Figure F-2 least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 years. • Area seasonally ponded is > 1/2 total area of wetland....................................................................... points = 4 • Area seasonally ponded is > 1/4 total area of wetland... ....................................................... points = 2 0 • Area seasonally ponded is < 1/4 total area of wetland.......................................................... points = 0 Map of N dro eriods Total for D 1 Add the ❑finis in the boxes above 2 D 2 Does the wetland have the opportunity to improve water quality? (see p. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland? Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft 3 Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft. of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut lagging X Residential, urban areas, golf courses are within 150 ft. of wetland Multiplier Wetland is fed by groundwater high in phosphorus or nitrogen _ Other 2 YES multiplier is 2 NO multiplier is 1 f TOTAL — Water Quality Functions M ul filil y the score from D1 by 172' then add score to table on p. 1 4 HYDROLOGIC FUNCTIONS — Indicators that wetland unit functions to reduce floodiny and strum de dation. D 3 Does the wetland have the ate to reduce flooding and erosion? (see p.46) D 3.1 Characteristics of surface water flows out of the wetland unit • Unit is a depression with no surface water leaving it (no outlet) ........................ points — • Unit has an intermittently flowing, OR highly constricted permanently flowing outlet ......... points = 2 ■ Unit is a "flat" depression (Q.7 on key) or in the Flats class, with pennanent surface 0 outflow and no obvious natural outlet and/or outlet is a man-made ditch ........................... points = 1 (If ditch is not permanently flowing treat unit as "intermittently flowing') • Unit has an unconstricted or sliLhtly constricted surface outlet(permanently flowing) .. points = 0 D 3.2 Depth of storage during wet periods. Estimate the height ofponding above the bottom of the outlet. For units with no outlet measure from the surface ofpermanent water or deepest part (if dry). • Marks of ponding are 3 ft. or more above the surface or bottom of the outlet ....................... points = • The wetland is a "headwater" wetland.................................................................................. points 5 5 • Marks of ponding between 2 ft. to < 3 ft. from surface or bottom of outlet.......... ................. points = • Marks are at least 0.5 ft. to < 2 ft. from surface or bottom of outlet ...................................... points = 3 • Wetland is flat (yes to Q.2 or Q.7 on key)but has small depressions on the surface that trap water points = 1 • Marks of ponding less than 0.5 ft......................................................................................... points = 0 D 3.3 Contribution of wetland unit to storage in the watershed: Estimate t e ratio o t :e area o upstream basin contributing surface water to the wetland to the area of the wetland unit itself. • The area of the basin is less than 10 times the area of unit ................................................... points = 5 3 . The area of the basin is 10 to 100 times the area of the unit ................................................ points = 3 . The area of the basin is more than 100 times the area of the unit .......................................... points = 0 otnts 5 • Entire unit is in the FLATS class = Total for D 3 Add the points in the boxes above __8 D 4 Does the wetland have the opportunity to reduce flooding and erosion? (seep. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, Multiplier it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood t tide Wetland Rating Form — western Washington, version 2 (7/06) Page 3 of 9 Wetland name or number: Wetland A gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems. Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems Other YES multiplier is 2 NO multiplier is 1 [ ♦ [ TOTAL —Hydrologic Functions Multiply the score from D3 by D4; then add score to table on. P. I F_ Comments: D 3.2: Wetland is a "headwater" for Stream 0390C-1 which begins at the culverts discharging from the wetland on the east side of 44`h Avenue Southwest. D 4: These culverts maintain a consistent surface water level for the wetland (see selected site photographs in Appendix E) which prevents seasonally flooding or inundation outside of the permanently flooded/ponded wetland area. Untreated stormwater runoff from 44`h Street Southwest drains directly into the wetland, no other streams or waterways discharge into the wetland and it is estimated that more than 90% of the water in the wetland is from groundwater. Wetland Rating Form — western Washington, version 2 (7/06) Page 4 of 9 Wetland name or number: Wetland A M.Kscq_ HABITAT FUNCTIONS — Indicators that wetland functions to provide important habitat. f per box)t� p H 1 Does the wetland have the potential to provide habitat for many species? H 1.1 Ve etation structure (see P. 72): Figure F-1 Check the types of vegetation classes present (as defined by Cowardin) — Size threshold for each class is 114 acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic Bed X Emergent plants ] Scrub/shrub (areas where shrubs have a 30% cover) 2 Ji Forested (areas where trees have > 30% cover) 1 t le unit has a forested class check if. - The forested class has 3 out of 5 strata (canopy, sub -canopy, shrubs, herbaceous, moss/ground- cover) that each cover 20% within the forested polygon. Add the number of vegetation types that qualify, if you have: Map of Cowardin vegetation classes 4 structures or more....... points = 4 3 structures.... ............... points = 2 2 structures .................... points = 1 I structure.................... points = H 1.2 Hydroperiods (seep.73): Figure F-2 Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or 114 acre to count (see text for descriptions of hydroperiods). X Permanently flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 or more types present...... points = 2 Occasionally flooded or inundated 2 types present ...................points = I 2 X Saturated only 1 type present ....................points = 0 X Permanently flowing stream or river in, or adjacent to, the wetland Seasonally flawing stream in, or adjacent to, the wetland Lake -fringe wetland .................= 2 points Y Freshwater tidal wetland ......... = 2 points Map of hydroperiods H 1.3 Richness of Plant Species (seep. 75): Count the number of plant species in the wetland that cover at least 10 ftZ (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canarygrass, purple loosestrife, Canadian Thistle. If you counted: > 19 species ...................... points = 2 1 5 — 19 species .................... points = 1 List species below if you want to: < 5 species ........................ points = 0 H 1.4 Interspersion of Habitats (seep. 76): Decided from the diagrams below whether interspersion between Cowardin vegetation (described in H1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, medium, ]ow, or none. Note: If you have 4 or more classes Figures or 3 vegetation classes and CD 1 and F-2 open water, the rating is None — 0 points Low - I point Modemte - 2 points always "high". 3 Use map of Cowardin classes [riparian braided chsnnels] Hiah =3 ints H 1.5 Special Ha itat Features (seep. 77): Check the habitat features that are present in the wetland. The number of checks is the number of points you put into the next column. X Large, downed, woody debris within the wetland (> 4 in. diameter and 6 ft. long) Standing snags (diameter at the bottom > 4 inches) in the wetland _ Undercut banks are present for at least 6.6 ft. (2m) and/or overhanging vegetation extends at feast 3.3 ft. (Im) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft. (I Om) 3 Stable steep banks of fine material that might be used by heaver or muskrat for denning _ (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned greylbrown) X At least 1/4 acre of thin -stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated (structures for egg -laying by amphibians) Invasive plants cover less than 25% of the wetland area in each stratum of plants 78 is NOTE: The 20% stated in early printings of the manual on page an error. H 1 TOTAL Score - potential for providing habitat Add the points in the column above 11 Wetland Rating Form — western Washington, version 2 (7/06) Page 5 of 9 Wetland name or number: Wetland A H 2 Does the wetland have the 2pRprtunity to provide habitat for many species? (only l scor per box) s H 2.1 Buffers (see P. 80): Choose the description that best represents condition of buffer of wetland unit. The highest scoring Figure F-3 criterion that applies to the wetland is to be used in the rating. See text for definition of "undisturbed". 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% of circumference. No structures are within the undisturbed part of buffer (relatively undisturbed also means no grazing, no landscaping, no daily human use) ............. points = 5 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference..............................................I........ ....... points = 4 ...................................... 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 95% circumference.................................................................................................... points = 4 100m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water I > 25% circumference.................................................................................................... points = 3 50m (170 ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference.............................................................................................. points = 3 If buffer does not meet any of the criteria above: No paved areas (except paved trails) or buildings within 251n (80 ft) of wetland > 95% circumference. Light to moderate grazing or lawns are OK .................................. points = 2 No paved areas of buildings within 50m of wetland for > 50% circumference. Lightto moderate grazing or lawns are OK................................................................... points = 2 Heavygrazing in buffer................................................................................................ points = 1 Vegetated buffers are < 2m wide (6.6 ft) for more than 95% circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland) ............................. points = 0 XBuffer does not meet any of the criteria above.............................................................. points = 1 Arial photo showing buffers H 2.2 Corridors and Connectians (seep. 81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft. wide, has at least a 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (Dams in riparian corridors, heavily used gravel roads, paved roads, are considered breaks in the corridor). YES = 4 points (go to H 2.3) NO = go to H 2.2.2 H. 2.2.2 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian 2 or upland) that is at least 50 ft. wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake - fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H 2.3) NO = go to H 2.2.3 H. 2.2.3 Is the wetland: • Within 5 mi (8km) of a brackish or salt water estuary OR • Within 3 miles of a large field or pasture (> 40 acres) OR YES = 1 point • Within 1 mile of a lake greater than 20 acres?' NO = 0 points Comments: H 2.1: Paved and compacted dirt roads surround the wetland for over 50% of the 80 ft buffer area. Sections of these roads are obscured in Figure F-3 by tree cover. Wetland Rating Form — western Washington, version 2 (7/06) Page 6 of 9 1 Wetland name or number: Wetland A H 2.3 Near or adjacent to other priority habitats listed by WDFW (see p. 82): Which of the following priority habitats are within 330 ft. (loom) of the wetland? NOTE: the connections do not have to be relatively undisturbed. These are DFW definitions. Check with your local DFW biologist if there are any questions. X Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Aspen Stands: Pure or mixed stands of aspen greater than 0.8 ha (2 acres) _ Cliffs: Greater than 7.6m (25 ft) high and occurring below 5000 ft. Old -growth forests: (Old growth west of Cascade Crest) Stands of at least 2 tree species, forming a multi -layered canopy with occasional small openings, with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. X Mature forests: Stands with average diameters exceeding 53cm (21 in) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old -growth; 80 — 200 years old west of the Cascade Crest. _ Prairies: Relatively undisturbed areas (as indicated by dominance of native plants) where greases and/or forbs form the natural climax plant community. _ Talus: Homogenous areas of rock rubble ranging in average size 0.15 — 2.Om (0.5 — 6.5 ft), composed of basalt, andesite; and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Caves: A naturally occurring cavity, recess, void, or system of interconnected passages. Oregon white Oak: Woodlands stands of pure oak or oak/conifer associations where canopy coverage of the oak component of the stand is 25%. X Urban Natural Open Space: A priority species resides within or is adjacent to the open space and uses it for breeding and/or regular feeding; and/or the open space functions as a corridor connecting other priority habitats, especially those that would otherwise be isolated; and/or the open space is an isolated remnant of natural habitat larger than 4 ha (10 acres) and is surrounded by urban development. Estuary/Estuary-like: Deepwater tidal habitats and adjacent tidal wetlands, usually semi -enclosed by land but with open, partly obstructed or sporadic access to the open ocean, and in which ocean water is at least occasionally diluted by freshwater runoff from the land. The salinity may be periodically increased above that of the open ocean by evaporation. Along some low -energy coastlines there is appreciable dilution of sea water. Estuarine habitat extends upstream and landward to where ocean -derived salts measure less than 0.5 ppt. during the period of average annual low flow. Includes both estuaries and lagoons. Marine/Estuarine Shorelines: Shorelines include the intertidal and subtidal zones of beaches, and may also include the backshore and adjacent components of the terrestrial landscape (e.g., cliffs, snags, mature trees, dunes, meadows) that are important to shoreline associated fish and wildlife and that contribute to shoreline function (e.g., sand/rock/log recruitment, nutrient contribution, erosion control). If wetland has 3 or more priority habitats..= 4 points If wetland has I priority habit .. = 1 point If wetland has 2 priority habitats ...............= 3 points No habitats............................... = 0 points Note: All vegetated wetlands are by definition a priority habitat but are not included in this list. _ (Nearby wetlands are addressed in question H 2.4). H 2.4 Wetland Landscape: Choose the one description of the landscape around the wetland that best fits (seep. 84) • There are at least 3 other wetlands within 1/2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development .......... points = 5 • The wetland is Lake -fringe on a lake with little disturbance and there are 3 other lake -fringe wetlandswithin 1/2 mile.....................................................................................................points = 5 • There are at least 3 other wetlands within 1/2 mile, BUT the connections between them are disturbed.......................:.....................................................................................................points = 3 • The wetland fringe on a lake with disturbance and there are 3 other lake -fringe wetlands within1/2 mile....................................................................................................................points = 3 • There is at least 1 wetland within 1/2 mile...........................................................................points = 2 • There are no wetlands within 1/2 mile ................ ... ... ... .....points = 0 H 2 TOTAL Score — opportunity for providing habitat Add the scores from H2.1, H2.2, H2.3, H2.4 TOTAL for H 1 from page 8 ♦ I Total Score for Habitat Functions Add the points for H 1 and H 2; then record the result on p. 1 Comments: Wetland Rating Form — western Washington, version 2 (7/06) Page 7 of 9 Wetland name or number: Wetland A CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the wetland meets the attributes described below and circle the appropriate answers and Category. Wetland Type — Cheer off any criteria that apply to the wetland. Circle. the Category when the appropriare criteria are met. SCl Estuarine wetlands? (see p.86) Does the wetland unit meet the following criteria for Estuarine wetlands? _ The dominant water regime is tidal, Vegetated, and With a salinity greater than 0.5 ppt. YES = Go to SC 1.1 NO X SC L I Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC Cat. 1 332-30-151? YES = Category I NO = go to SC 1.2 SC 1.2 Is the wetland at least 1 acre in size and meets at least two of the following conditions? YES = Category 1 NO = Category II Cat. 1 The wetland is relatively undisturbed (has no diking ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native Spartina sp are only sppecies ,. that cover more titan 10% of the wetland, then the wetland should be given a dual rating (l/Il). Cat. I1 The area of Spartina would be rated a Category 11 while the relatively undisturbed upper marsh with native species would be a Category 1. Do not, however, exclude the area of Spartina in determining the size threshold of 1 acre. Dual At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed Rating or un-mowed grassland 1/II The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. SC2 Natural Heritage Wetlands (seep. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland being rated in a Section/Township/Range that contains a natural heritage wetland? (This question is used to screen out most sites before you need to contact WNHP/DNR.) S/T/R information from Appendix D or accessed from WNHP/DNR web site X YES Contact WNHP/DNR (see p. 79) and go to SC 2.2 NO X SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as a site with state threatened or endangered plant species? Cat I YES = Category 1 NO not a Heritage Wetland SC3 Bogs (seep. 87) Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below to identify if the wetland is a bog. If you answer yes you will still need to rate the wetland based on its function. 1. Does the unit have organic soil horizons (i.e. layers of organic soil), either peats or mucks, that compose 16 inches or more of the first 32 inches of soil profile? (See Appendix B for a field key to identify organic soils)? YES = go to question 3 NO = go to question 2 2. Does the wetland have organic soils, either peats or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on a lake or pond? YES = go to question 3 NO = is not a bog for purpose of rating 3. Does the unit have more than 70% cover of mosses at ground level, AND other plants, if present, consist of the "bog" species listed in Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Table 3)? YES = Is a bog for purpose of rating NO = go to question 4 NOTE: If you are uncertain about the extent of mosses in the understory you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16" deep. If the pH is less than 5.0 and the "bog" plant species in Table 3 are present, the wetland is a bog. 4. Is the unit forested (> 30% cover) with sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann's spruce, or western white pine. WITH any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover (> 30% coverage of the total shrub/herbaceous cover)? Cat. I YES = Category I NO = X Is not a bag for purpose of rating Wetland Rating Form — western Washington, version 2 (7/06) Page 8 of 9 I I Wetland name or number: Wetland A SC4 Forested Wetlands (seep. 90) Does the wetland have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife's forests as priority habitats? If you answer yes you will still need to rate the wetland based on its function. Old -growth forests: (west of Cascade Crest) Stands of at least two three species forming a _ multi -layered canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81 cm or more), NOTE: The criterion for dbh is based on measurements for upland forests. Two -hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and "OR" so old -growth forests do not necessarily have to have trees of this diameter. Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 — 200 years old OR have an average diameters (dbh) exceeding 21 inches (53 cm); crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old -growth. Cat. I YES = Category 1 NO = X not a forested wetland with special characteristics SC5 Wetlands in Coastal Lagoons (seep. 91) Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? The wetland lies in a depression adjacent to marine waters that is wholly or partially separated _ from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks. The lagoon in which the wetland is located contains surface water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom.) YES = Go to SC 5.1 NO X not a wetland in a coastal lagoon SC 5.1 Does the wetland meet all of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing) and has less than 20% cover of invasive plant species (see list of invasive species on p. 74). At least 3/4 of the landward edge of the wetland has a 100 ft. buffer of shrub, forest, or un-grazed or un-mowed grassland. Cat. I The wetland is larger than 1/10 acre (4350 square ft.) YES = Category I NO = Category II Cat. II SC6 Interduna] Wetlands (seep. 93) Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? YES = Go to SC 6.1 NO X not an interdunal wetland for rating If you answer yes you will still need to rate the wetland based on its functions. In practical terms that means the following geographic areas: • Long Beach Peninsula -- lands west of SR 103 • Gray] and -Westport -- Iands west of SR 105 . Ocean Shores-Copalts — lands west of SR 115 and SR 109 SC 6.1 Is the wetland one acre or larger, or is it in a mosaic of wetlands that is one acre or larger? YES = Category II No. = go to SC 6.2 Cat. II SC 6.2 Is the wetland between 0.1 and 1 acre, or is it in a mosaic of wetlands that is between 0.1 and 1 acre? YES = Category III at. III Category of wetland based on Special Characteristics Choose the "highest" rating if wetland falls into several categories, and record on p. 1. If you answered NO for all types enter "Not Applicable" on p._1_ Comments: J Wetland Rating Form — western Washington, version 2 (7/06) Page 9 of 9 PAb ,7� ♦� 4 ;i - w �:0N+=' I�� It it; Cat 5. Legend ® Forested (PFO) O Wetland Boundary (Estimated) 1 ® Emergent (PEM) 0 ® Scrub Shrub (PSS) Wetland Buffer (50 ft) Data Source: 13 Imagery Prime 0 } Palisades III Water Main Project J LANDAU Wetland Report ASSOCIATES Federal Way, Washington Note 1. Black and white reproduction of this color original may reduce its effectiveness and lead to incorrect interpretation. 0 80 160 Scale in Feet Wetland A Figure Cowardin Vegetation F-1 �� •mat ! , J �` �• � �. 5• 'F�� 1 �r�r � I � 1 i fit r •� r�T �,,. " r r � �� •��,�• .' rPr,r�y4� i:tYf�'•� � ` �' ",, i y POP lilt 14 wS Xyl 11 r.,s h:.. �, l.r.... •i *�., � "7�- 7s� � -fir, r � � ' ti i � • ' + � �._ �. �, •��, fib_ � 44 t � , i'�r It.f�' � •r�� I VT f A � � y air * ` � • +ir � d Q a LL O Z i ! I / r \ \ \ /80 ft Buffer / \ \ 170 ft Buffer \ /350 ft Buffer / I J Wetland Boundary (Estimated) J Wetland Buffers Data Source: 13 Imagery Prime Palisades III Water Main Project LANDAU Wetland Report ASSOCIATES Federal Way, Washington 1. Black and white reproduction of this color original may reduce its effectiveness and lead to incorrect interpretation. 0 150 300 Scale in Feet Figure Wetland Buffers F-3 MAIN REPLACEMENT PROJECT 2009=33 PALISADES III DUMAS BAY SHEET 1 OOM SHEET SHEET 2 LEGEND AND ABBRIWTIONS SHEET 3 44TH AVE SW PLAN & PROFILE SW 313TH ST TO STA 15+00 SHEET 4 44TH AVE SIN PLMI & PROFILE STA 15+00 TO STA 21 +00 SHEET 5 44TH AVE SW PLAN & PROFILE STA 21+00 TO STA 26+50 SHEET 6 44TH AVE SW PLAN & PROFILE STA 26+50 TO 307TH ST SW PALISADES RETREAT CENTER SHEET 7 PN.15M RET CTR PLAN do PROFILE STA 30+00 TO STA 33+43-86 AND STA WOO TO STA WOO ST N do SHEET 8 SW 307TH ST PLAN & PROFILE STA 14+00 TO 43RD AVE sw SHEET 9 48TH AVE SW PLAN PROFILE INT 49 H AVE SIN & SW BASH POINT RD SiiEET 7 SHEU a ) SW 31OTH ST PLM & PROFILE INT 44M AVE SW TO END OF CLL DE—SA►G SHEET 10 39TH AVE SW PLAN & PROFILE SW DASH POINT RD 70 STA 14+00 SHEET 11 39TH AVE SW PLAN & PROFILE STA 14+00 TO END OF OIL —DE —SIC m a F SHEET 9 spy dAs Sp91 A S1v STY 313TH ST Shy DASH POINT RD (SR 509) IT" x ch P U G E T SOUND ya Kew Tarr 4�e SHEET` ►b q+� �R DASH $ 1 POINT 8 $ 9y8 Sy Or 0� �, �a 4 r■ u�sx aaxr In m 50) 110 SmST SUPPLY HEAD 346' WAM SMOL QTHER SYMRO S PAYEMMT ABBREYIATfQ sTAMURD NOTES LLYIETYEE n� SIOIl � NO STN5711111a1 � 11991K5 OOBgUf IiODR Ali'IgllE EXISTING PROPOSED DESCRIPTION EXISTING PROPROSED DESCRIPTION EXISTING PROPROSED DESCRIPTION EXISTING CRUSHED ROCK/GRAVEL A ABAN ANGLE ABANDONED MAXMAXIMUM MH MANHOLE O F TM.gM UM AC ASBESTOS CEMENT WIC NON IN CASE ILL ♦1M 1OIMM 51ir1 OE KWO N MCpDA1L7E OIIH WI M W8 J !� 4 BYPASS Fo O Fo O FIBER OPTIC MANHOLE APP'D APPROVED APPROXIMATELY MR.MLLIMETER MN MINIMUM ON 17-0 -1. 9M - _! BUILDING LINE EXISTING COBBLE STONE/PAVER APPROX XL A* 800 AND VS 9ft K MIKFXnM N a CHECK VALVE FO FO FIBER OPTIC VAULT ASPH ASPHALT NO MECHANICAL JOINT MONUMENT VOW M 17-0F1. X--. FENCE � m ® GAS MANHOLE AVE AVENUE MON MRP MAIN REPLACEMENT PROJECT tL 11LVE 0= VG LLM N PON WWRE A W DAIIIW OMOWIE OPEN VALVE 0 0 GAS VALVE EXISTING ASPHALT/OIL MAT B/F BUTTERFLY PFA Ni T}BL NTH 1-1/Y HW A CUM 3/E• PO NS4-22 RKM PER VO M - - GUARDRAIL 8/0 BLOW OFF N NORM Im m RAILROAD TRACKS CLOSED VALVE 9 O MONUMENT B/O ASSY BLOW OFF ASSEMBLY N/A NOT APPLICABLE 71E Cxwu 9100 NE 11" NO BMW OF AIL MW ® ® POWER MANHOLE BLVD BOULEVARD NGVD NATKW GEODETIC VERTICAL DATUM P 10 M' +rD®as1 +7a®2s1 PRESSURE REDUCING VALVE (ARV) EXISTING CONCRETE SM BENCH MARK NO NUMBER RETAINING WALL o POWER POLE BNSF BURLINGTON NORTHERN SANTA FIE RAILWAY NIS NOT TO SCALE VE %W LENIM OF PFE �� I AS f M 11O A MOMM �- - CENTERLINE TEE W y POLE ANCHOR BVC BEGIN VERTICAL CURVE F/illm wm No NET' H 11-1/4' ELL [] [] POWER VAULT LANDSCAPING OD OUTSIDE DIAMETER M#W'M A ♦BOLE E1F FOE LYIpILM a 10 flF COM ��� �� RIGHT OF WAY ., CB CATCH BASIN OH OVERHEAD I�pe p THE W lam 11O lElo lTITN'l1IS N THE RISK >NLT7t RAILROAD SIGN CDF CONTROLLED DENSITY FILL � 1i71JTH 36h1 STfO�7 A1O 1�,11 AEMJC NT;O11O1. TO am ----------- EASEMENT F� 22-I/7 ELL CI CAST IRON PC PIERCE COUNTY gym," -___----- • • SANITARY MANHOLE APAAOX MIORATION UL6i5 CL CLEAN UNEOUT OR CLASS PC POINT CULVERT 45 ELL �" k..,...-, SHRUB CO CLEAN OUT PC CURVET POINT OF CURVE IT FT 90 ELL ® ® SPRINKLER HEAD PAVEMENT R£STORAfIOH CON CONCRETE RE PG POLYETHYLENE PERFORMANCE GRADE D D DITCH 0 O STORM CATCH BASIN CONN CONSTR CONNECTION CONSTRUCTION PI POINT OF HORIZONTAL INTERSECTION - SIDE SEWER s T + CROSS 0 O STORM MANHOLE WATER MARE COT CITY OF TACOMA PKWY PARKWAY VERTICAL ELL W/ CSBC CRUSHED SURFACING BASE COURSE PL PLACE - 14%s - - 14%s - SANITARY SEWER -44- CONCRETE ANCHOR 0-9 h-:w; STREERIGHT CSTC CRUSHED SURFACING TOP COURSE PROM PROJECT -� 8929 -i'D WATER SERVICE ® t.:.r STREETUG14T JB CT CULV COURT CULVERT PROP PRP PROPOSED PUBLIC ROAD PROJECT - 16'FM - - 167M - FORCED SANITARY m m TELEPHONE A CY CUBIC YARD PTV PRESSURE REDUCING VALVE - 20so - - 20so - STORM DRAM SAMPLE STATION 8 8 TELEPHONE MANHOLE PT POINT OF TANGENCY DI DUCTILE IRON PVC POICHLORIDE - GAS CONCRETE ANCHOR � � --0-TELEPHONE POLE CIA DIAMETER PN NT OF OF VERTICAL INTERSECTION POINT - 1o'c - - 10•G REDUCER W/CONCRETE ® ® TEEV19ON JB DWG DRAWING pvr POINT OF NCY TEE TEL TELEPHONE Q ANCHOR DWY DRNEWAY PIMA PUBLIC WORKS ADMINTICAL ISTRATION BLOW OFF ASSEMBLY TRAFFIC SIGNAL FAST R RADIUS Fo Fo FIBER OPTIC ® ® TRAFFIC SIGNAL JB IS R RANGE TV Tv TElEVI510N (GAIN) E-- CAP-.� : '' ^- z., TREES (CONIFEROUS) EA ELEC ELEC ELECTRICAL R/R RAILROAD PLUG, a TREES (DECIDUOUS) ELEV EDP ELEVATION EDGE OF PAVEMENT ROW R/W RIGHT OF WAY RIGHT OF WAY PWs - _ case POWER STRELTllGHf -(� SOUD SLEEVE EO EVC EQUATION END VERTICAL CURE RD'NY ROADWAY � -F� TRANSITION COUPLING EX EXISTING S SOUTH TS TRAFFIC SIGNAL �� � END CAP COUPLING FPS FINISHED FLOOR ELEVATION SAN SBM SANITARY SUURFACCEE BRASS MON EX 12" AC MAIN 12" DI PIPE PH FIRE HYDRANT SEC SMALL END BELL DISTRIBUTION MAINS I FIRE HYDRANT F FMM FLANGE FORCE MAIN SEC SECTION EX 58* STL MAIN 50' STL PIPE FT FOOT SES SMALL END SPIGOT z TRANSMISSION MAINS SP SPECIAL GALV GALVANIZED SSB SUB SURFACE BRASS GIs GEOGRAPHIC INFORMATON SYSTEM ss5 SUB SURFACE STONE GM CAS METER ST STREET FOUND REBAR AND CAP GNO GROUND STL STEEL NORTHING: 732927.99' 1fRT1GM, CONTROL MIC GV GATE VALVE SW SIDEWALK BASTING: 1171770.78' NORTHING: 2 T TANGENT �0 7 81.51'' EASDNG: 1172361.51' HOPE HIGH DENSITY POLYETHYLENE S7 JlL777'11R ST �! ELEVATION: 91.39 HMA HOT MIX ASPHALT T TOWNSHIP 1a602.94, A8<;09'27W HP HIGH PRESSURE TEMP TEMPORARY pp! L=149.70' NBT24'47"E L••T53.61' N01'12'33E HYD HYDRANT TL TRUE LENGTH R=15 TV TYPICAL LC=152.8 R=60 ID INSIDE DIAMETER T=I 10.61' 26 LC=90.26' IE INVERT ELEVATION UG UNDERGROUND A=10T00'00" sr T=56.14' IN INCH UNK UNKNOWN A-3611'31" .y, IP INTERvEDIATE PRESSURE L•82.62' FOUND MIC 0 39TH AVE SW VC VERTICAL N19'35"13'W R=449.37' NORTHING: 732071.65' ygy�a JB JUNCTION BOX VERTICAL CURVE LC=218.69' EASING: 1173608.02' T"tiv AT2T5302" L=155.02' N861C'311V �0 FOUND MIC IN CENTER OF L LENGTH W W/ WEST . WITH - R-3C},07' ! LC=130.93' L-149.69' N0617'51'E SM ATi dr RsZ00.99' %N PL SW CUL-DE-SAC NORTHING: 732082.12' LC LF LENGTH OF CHORD UNEAR FEET WDP WATER DIVISION PROJECT LC=318.17' FASTING: 1173772.41' LEB LARGE END BELL WM ERNE MERIDIAN SUPPLY HEAD 346' AT19'35'00" FOUND SSB IN 44TH AVE SW T=203,47' LLS LARGE END SPIGOT WO WORK DER FOUND MIC IN CENTER OF FOUND MI CENTER SAC 1.42 CUL-DE-SAC NORTHING: 731037.33' A=9D42'06• L=103.76' NO2'23'37T be UD LOCAL IMPROVEMENT DISTRICT SW 310TNORTHING: N 700.13' H27-51-09-E BASTING: 1172102.73' FOUND MIC 0 39TH AVE SW R=200.17' YR YEAR BASTING: 1171879.28' 1*1 NORTHING: 731852,35' LC=213.69' 0k2• 471 J� 1�'78'IY FOUND SSB IN 44TH AVE SW FASTING: 1173802.90' T=118.30' NORTHING: A=61'09'S4' LC=180 5' W EASTING:117203328' FOUND MIC 0 39TH AVE SW � (F VM T=92.53' "' NORTHING: 173 7 8.69'8.57' EASIING: 1173798.57' 4 i FOUND A9C 0 INi S4 DASH PINT RD � � T�� ��� IF~ � �� �� �M g L.11Tr$5' A=3D33'20" z o �,r 6 39TH AVE SW OLM�r1 N0i40,.V w �7 NORTHING: 731579.16' TACOMVA WATER 'AM �x FOUND SSB IN 44TH AVE SW FASTING: 1173894.79' PTA1H0 MIC QUARTER SECTION NORTHING: 7QUART R FOUND MIC IN 313TH ST 8 SW R=312.ZO' NORTHING: 731531.82' EASTING: 1171994.33' 3 �A� �.�1 y ��p � AM UL,Uf�N{M MR BASTING: 1169718.17' NORTHING: 730874,31' FASTING: 1171607.64' ,� LC=202.29' 2 0 L=2609.71' N8609'27W A=3T0J830" 1 .t/fW�� atC �1fmWnJ dI 44H aI E ah � X M� Sri & 3M AVE 5w ypN DVE H� APP'D SG11SFWNO MIC CENTER OF SECTION w1E �z NETS +PPBO�EDSiam NORTHING:731OU0.81' I�ODN DESgGNED GW Sr FASTING: 1172326.53' DR�MN SRS MM1OI boabiD�� CHEtl6D RMF fMRLrW NOT TO SCALE ML6 F SUkhl'INC ENtlIEDd1K: NSPELTKIN FIELD BOOK 1403 LP N0. 21}/{I, 42, k 43 BILE 800K 2 •WFA-00.Vs�-12 20000029973 WLR-OOb56-12-01 20000029974 SHEET Z OF_IL 44r& AVE -SW NW1 /4-SEC 11 -T21 N-R3E-WM v ��.r • • CONFRACTOR TO VERIFY LOCATION AND ELEVATION OF EXISTINGCONCRETE FIRE N ANCHOR TEE, REMOVE CONNECTION. PLUG AND CONCRETE ANCHOR AND MAKE THE CONNECTION. 03 \• 4pir 8' GATE VALVE MJ \ : r 8" ELL TE ' • r / ��' CONCRETE ANCHOR 03 CONTRACTOR TO VERIFY LOCATION AND ELEVATION OF cv) +,�" EXISTINC FEE, RE310YE EXISTING 8" DI MAIN /S NEEDED 12- C Rf � \ti\ 1�\ AND RANAWALL PLOD D AFTER TESTING, SAMPLING AND SEANCE 8" PLUG MJ e ! • p Am RUN ■EIE t 12'C6LVERi ]Ij442 1, 4 W CULVERT 8" 01 MAIN CL 52412jo,", 12" CULVERTROTC WALL35H2004-43) (200EXlST 92 DI MAIN CL 52 4" CUTLAJ 94341992-7) (1992) ROCK WALL 12" CULVERT77 — EX 12" DI MAIN SP CL 52 (MRP 2004-43) (2005) \\ tuae 6' DI PIPE SP CL 52 !s t Z_ tj _ sioo /r - �A8ANO0NE0 tt 44TH AVE SW \\t —ABANDONED (PC 1992EX W III —77) (1992)SP CL� �' ARAt�ONED = 2711 7'ry 9Ysi 2"iY , 2'fH 27M 2T11 2TM 2'f11 2�4 YFM 2"G Y P'0 1M17 -2 C — F.. -__—__—__«—____�_ ��yyJJ AeMg1DH0ED tA� 04 SW MTH ST EX MON LINE GRADE EX FLOW UNE 12' MAIN PROFILE OF 44TH AVE SW 20 10 0 20 40 60 SCALE IN FEET EX MON LINE GRADE W EX FLOW LINE 8" MAIN O 'a + Ln W ` Z GW7 FLOW UNE 8" MAIN �" N MAINTAIN MIN 3,5COVER SUPPLY HEAD 30' + F1') � M W Z tzi :3 W S = N W Z LG.7F 2 3j H +� N v MTN 8' ELL NJ 11-1/4' CONCRETE ANCHOR RESTORE GROUND AND/OR PAVEMENT 12• WIN COMPACTED TRENCH BACKFlLL AS PER COMPACTED TRENCH BACKFILL 12 wh WSDOT 7-08.3 (3) AND 2-09.3 (I)E PER WSDOT 7-08,3 (3) AND .. AS AMMENDED BY THE Cltt OF 2-09.3 (1)E AS AMMENDED B1 TACOMA., THE CITY OF TACOMA. -HEW 8' DI PIPE L- CONTROLLED DENSITY FlLL UNDISTURBED SOIL WATER MAIN TRENCH DAM NOT TO SCALE uui. /. a r-^4 4 rr%4 \I n7r \A111,A EX MON LINE GRADE F- APPROX GRADE OVER MAIN ROW LINE 8' MAIN MAINTAIN MIN 3.5' OF COVER PROFILE OF 44TH AVE SW Tr_arr�srnm.�ma .IT SECTIQH @ NOT TO SCALE W 8' DI PIPE CONTROLLED DENSITY FILL NDISTURBED SOIL Nm 29 CONTRACTOR TO VERIFY LOCATION AND ELEVATION OF h (/� EXISTING SANITARY FORCE INNS � 2-B' GATE VALVE NJ 8'X 4' TEE NJ SEE SHEET 9 a 0 CONCRETE ANCHOR nw„ 20' LENGTHS OF 14' CM PVC (OR 18) CASING PIPE (S E DCASING ffT STOiS AND CASING END SEALS I i5 25' 8'X 6' TEE NJ 3' 6' GATE VANE AI 6+� 6' FIRE HYDRANT NJ (DWG 17-56-1) 3 ,Y 4-6' MJ RESTRAINING GLAND+ �' } o = 0 f mw E>allp am AS TIQ UL IBA1 p 'AS IX wll .>F�1' 17.111/11 m mou mwn NE CORSE Gd111 It TO PIE F� TIE N!i✓lwlE 9AE FORA PA ail 4F newoaNta era umm" R wa W. IE AICGIIA 1 m SpI1R1 Me wo Nllq IIICII Jim Trim WL p10 ommv r) sy 310TH sf FLOW LINE 8' MAIN MAINTAIN MIN 3.5' OF COVER 20 10 0 20 40 60 SCALE IN FEET N W Z 4�7j 2yN� IV- W N EX MON LINE GRADE w sow BE mm I SUPPLY HEAD 346' 20 LF 14' PVC CASING J t: t o— N W Y Z :3 _ ]tops = N U W o N CONTRACTOR TO VERIFY LOCATION AND ELEVAT10N OF EXISTING SANITARY FORCE MAINS. 2-20' LENGTHS OF 14' C905 PVC (DR 18) CASING PIPE WITH CASING INSULATORS AND CASING END SEALS (SEE DETAIL THIS SHEET) w � a e IRi 1� n OTID fit—, 8' DI PIPE SP CL 52 12' CULVERTS Q Q IkN TOR r EX MON LINE GRADE 14' P/C CASING I PSI MODEL C12G-2 CASING SPACERS (OR APPROVED EQUAL) MAXIMUM 2.0' FROM EACH S1DE OF JOINT 8.0' W00MUM BETWEEN SPACERS FLOW LINE 8' MAN L 20 LF 14' PVC CASING 14' PVC CASING PIPE, AWWA C905, DR 18 PSI END SEAL MODEL V W/STAINLESS STEEL BANDS (TYPICAL) "8' DI PIPE SP CL 52 140 PVC CASING PIPE_ DETAIL 1 NOT TO SCALE NW1 /4-SEC11-T21 N-R3E-WM POND WETLAND FLAG 8'X 6' TEE MJ 6' GATE VALVE MJ 6' FIRE HYDRANT MJ (DWG 17-56-1) 4-6' MJ RESTRAINING GLAND M u .00� 1 �Y 8a SIP N go 5 Q s� Epp Q PROFlLE OF 44TH AVE SIP CASING PIPE, AWWA R 18 MINIMUM 1' CLEARANCE PSI MODEL clzc-z �87 DI PIPE SP CL 52 CASING SPACER (OR APPROVED EQUAL) SECTION A NTS 12��5���� EX MON LINE GRADE FLOW LINE 8' MAIN Ili 20 10 0 20 40 60 SCALE IN FEET N W Z HV— N go N c0 m Z tj ::3 4JJ = N N=29 SUPPLY HEAD 346' om a+L am OWL Sw I N � W � 2 WN En 8' CATE VALVE NJ 2-8- ELL NJ 11-1/4- 4-8- ELL W 22-1/7 6-CONCRETE ANCHOR 8lk 6' TEE NJ 6' GATE VALVE NJ 6' FIRE HYDRANT NJ (DWG 17-56-1) 4-5' NJ RESTRAINING GLAND NW1 /4-SEC11-T21 N-R3E-WM e SF W �I 5002 8ELL NJ 49 2-8' ELL 22-1/7 3-CONCRETE ANCHOR s� 20 10 0 20 ♦u uu SCALE IN FEET SEE SHEEP 8 Lo 2 \ ` 1 \``1 \ \, s ■� ♦ [� �'1! � ■ • _ � ^l Jos 13 4 � \ ♦ ?6 ■■ ■L t • 'ice/ ,♦L \� 8�' ►� pip r GkIE VALVE 14 •■•1 ♦■• ••• ■•■ J 2-r EFL W 46, 2-CONCAEEE ANCHOR I , ■\. 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TAPPING BY SPEER TAPS INC, HD SUPPLY OR SUPERIOR TAPPING ONLY. 8TAPPING GATE VALVE MJ / 8' TAPPING SLEEVE I CONCRETE ANCHOR ROCK WALL G APPROXIMATE EX GRADE OVER MAIN MAINTAIN MIN 3.5' OF COVER 8' ELL MJ 45' 8' ELL MJ II-1/4' 8' SOLID SLEEVE LU (LONG) 3-CONCRETE ANCHOR ry =- :2 IX 6" AL MAIN (ACQURED FROM WATER D15TZ<CT E106) TO BE ABUMO B:D CONTRACTOR TO VERIFY LOCATION AND ELEVATION OF THE EXISTING 12'X 6' CROSS, CUT AND REMOVE A SECTION OF 6' DI PIPE AND INSTALL A 6' NJ PLUG WITH CONCRETE ANCHOR AFTER TESTING, SAMPLING AND SERVICE TRANSFERS ARE COMPLETE. 6' PLUG NJ CONCRETE ANCHOR ti Y I O�0 Q ' r i � r f F3 CIO f.3 SIY SOTH ST NW /4—SEC11—T21 N—R3E—WM Ci S . 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TAPPING BY SPEER TAPS INC, HD SUPPLY OR SUPERIOR TAPPING ONLY. B' TAPPNG CATE VALVE MJ w 8' TAPPING SLEEVE CONCRETE ANCHOR f 2-8' ELL MJ 22-1/2' 8' ELL MJ 11-1/4' 8' SOLID SLEEVE MJ (LONG) go 3-CONCRETE ANCHOR 8'X 6' TEE MJ 6' GATE VALVE MJ 6' TIRE HYDRANT MJ (DWG 17-56-1) 4-6" MJ RESTRAINING GLAND 12+94 / 41 CONTRACTOR TO VERIFY LOCATION, ELEVATION AND OD OF E)OSTING 8' AC MAIN, AND CUT AND REMOVE THE EXISTING 8' TEE, VALVE AND CONCRETE ANCHOR, AND MSTALL A SECTION OF d, 8' (1 PIPE, 8' GATE VALVE AND 8' TRANSITION COUPLINGS, AND MAKE CM4ECWG AFTER P NC AND SERVILE TRANSFERS ATit ING, 11:STSAM [I COMPLETE. 8' GATE VALVE MJ 2-8" TRANSITION COUPLING W/7' CENTER RING (AC TO DI) �Q- o � 4 ��," s•c z7v 39TH AVE SW H' DT PEE SP CL 52 _ � - 1 o rn Elf 6' AC MAIN VMIRED FROM WATER DISTRICT 0106) ► - TO BE REMOVED 2-8' ELL MJ 11-1/4' 2-CONCRETE ANCHOR Y Odl@I =1G F1r71&7 QM+lre iYNG All TIE 'ILLIi11111 M SWAM kML 70 SVFJIL AN S>O= 711100 B ME camm omwo 1C POW rXS = fK HIMM R TAE FIK. 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