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Mikmio*li, ----fl.:_____•o ' 'II- '.7:4 ay - ------------ ___ "11.-46,11°11-16.Y1.,v1 ... - _ r EIS ‘11 MP' AisRlikg„ emPria Renton Parks and wi lOn /I palb fps Recreation Department Mb Ir. a/ DRAFT ENVIRONMENTAL IMPACT STATEMENT FOR PROPOSED GENE COULON MEMORIAL BEACH PARK EXTENSION • prepared by WILSEY & HAM, INC. for the RENTON PARKS AND RECREATION DEPARTMENT RENTON, WASHINGTON For the Review and Comment of Citizens, Citizen Groups, and Governmental Agencies In Compliance With: The State Environmental Policy Act of 1971 Chapter 43.21c, Revised Code of Washington SEPA Guidelines, Effective January 16, 1976 Chapter 197-10, Washington Administrative Code (Revised, 1978) City of Renton Ordinance #3060 DATE OF ISSUE OF DRAFT: December 7, 1979 DATE COMMENTS DUE: January 11, 1980 COST PER COPY: $4.00 + I Introduction Action Sponsor: • Department of Parks and Recreation City of Renton Municipal Building 200 Mill Avenue South Renton, WA 98055 (206) 235-2560 Proposed Action: Construction of an extension to Gene Coulon Memorial Beach Park and modifi- cations to the existing park. Project Location: The park is located on the southeastern shoreline of Lake Washington in Renton,, Washington. Lead Agency: City of Renton Responsible Official/Contact Person: • John Webley, Director City of Renton Department of Parks and Recreation • Municipal Building 200 Mill Avenue South Renton, WA 98055 • (206) 235-2560 Authors & Principal Contributors/Location of Background Data: Environmental Analysis and Document Preparation: Wilsey & Ham, Inc. Central Park Building 1980 - 112th Avenue N.E. • Bellevue, WA 98004 Soil Investigations: Rittenhouse-Zeman & Associates, Inc. 13837 N.E. 8th Street Bellevue, WA 98005 Aquatic Biology: Nautilus P.O,. Box 993 Sequim, WA 98382 Hydraulic Engineering Investigation: Norman Associates Coastal and Hydraulic Engineers 4605 148th Ave. N.E. Bellevue, WA 98005 II l Master Plan Development: Jones & Jones 105 South Main Street Seattle, WA 98104 Licenses Required: Bond issue . passed by citizens, Shoreline Substantial Development Permit, filling permit, State hydraulics permit, U.S. Army Corps of Engineers' per- mit, harbor area lease, Coast Guard permit, water and sewer hookup permits, building and grading permit. Cost of Copies: $4.00 Date of Issue of Draft: December 7, .1979 Return Comments to Responsible Official By: January 11, 1980 • • ii Table of Contents Page Introduction i Table of Contents iii Recipients,of the Draft EIS 1 jSummary of. Contents of the Draft EIS: The Proposed Project 3 Summary of Environmental Impacts 7 Summary of Mitigating Measures 10 Summary of Alternatives 10 Unavoidable Adverse Impacts 11 Description of the Proposal 13 Existing Conditions, Environmental Impacts and Mitigation Elements of the Physical Environment: Topography 19 Geology and Soils 19 Air 23 Water 26 Vegetation 27 Wildlife 29 Noise 32 Natural Resources 35 Light and Glare 36 Risk' of Explosion or Hazardous Emissions 36 Land Use 36 Elements of the Human Environment: Population and Housing 41 Transportation/Circulation 41 Public Services 46 Energy 49 Utilities 49 Health and Safety 52 t Aesthetics 53 Recreation 53 Archaeology/History 54 The Relationship Between Local Short-term Uses of Man's Environment and Maintenance and Enhancement of Long-term Productivity and 'Irreversible or Irretrievable Commitments of Resources 57 Alternatives to the Proposal , 59 Unavoidable Adverse Impacts 61 References 63 List of Elements of the Environment 65 Appendix: Noise 67 iii I ' 1 I I - I LIST OF FIGURES Figure 1: Vicinity Map 14 I/ Figure 2: Site Plan 15 Figure 3:. Soil Sampling Sites 20 Figure 4: Noise Measurement Sites 33 Figure 5: Generalized Land Use 37 Figure 6: Zoning 38 Figure 7: Census Tracts 42 LIST OF TABLES - Table I: Summary of Pollutant Concentrations-Renton Area 25 Table II: Existing Noise Levels 32 Table. III: Predicted Ldn Noise Levels 34 Table IV: Population Characteristics and Trends ' 43 Table V: Population Growth Projections 44 Table VI: Housing Characteristics 44 • J 1 iv . 1 Recipients of the Draft EIS Federal : Coast Guard Coast Guard Auxillary Department of Agriculture, Soil Conservation Service Department of Housing & Community Development Environmental Protection Agency Fish .& Wildlife Service NOAA - National Marine Fisheries Service " U.S.. Army Corps of Engineers State: ' Department of Commerce and Economic Development Department of Ecology Department of Fisheries Department of Game Department of Natural Resources Department of Transportation, State Highway Commission Department of Social and Health Services Governor's Office Office of Archaeology and Historic Preservation = Office of Planning and Community Affairs Office of Program Planning and Fiscal Management Parks and Recreation Commission Regional : Bonneville Power Administration Community Services Administration METRO - Water Pollution Control METRO - Transit Puget Sound Air Pollution Control Agency Puget Sound Council of Governments Seattle-King County Department of Public Health King County: County Council : District 6, Bruce Laing District 8, Bob Grieve Department of Budget and Program Planning Parks Division Planning Division, Community Planning City of Renton: Mayor City Council Fire Department Planning Commission Planning Department Police Department Public Works Department 1 I r ail Utilities/Services: • Pacific Northwest Bell Puget Sound Power and Light Renton School District No. 403 Seattle Water Department Washington Natural Gas Company Libraries: Renton Public Library Seattle Public Library Newspapers: . Daily Journal of Commerce Renton Record Chronicle Seattle Times Seattle Post-Intelligencer Private Organizations and Others: Burlington Northern Greater Renton Chamber of Commerce Griffin Boys Home Northwest Steelhead & Salmon Council. of Trout Unlimited Seattle Audubon Society Washington Environmental Council I' I/ 2 1 I Summary of Contents of Draft EIS THE PROPOSED PROJECT The City of Renton Department of Parks and Recreation proposes to construct a major extension and modifications to Gene Coulon Memorial Beach Park, located on the south shore of Lake Washington within Renton. The site is a narrow parcel of undeveloped waterfront property that was created by fill for the previous industrial use of the site. The fill resulted in angular projections and steep banks into the lake. In many locations rubble such as concrete and lumber are exposed and much of the site supports only sparse vegetation due to the glanular, infertile nature of the fill . The goal of the development is to serve the recreational needs of Renton citizens through the development of as natural a waterfront and shoreline park as possible with associated improvements and activities not possible in other park areas. This goal will be accomplished through: • Improvements to the existing swimming park to relieve overcrowding, parking and circulation problems. u Development of over one mile of Lake Washington shoreline in a manner that enhances its natural and environmental potential while providing significant unstructured recreational uses. to Expansion and improvement of the water-related activity through the expansion of boat launches, landings, day moorage, overwater piers and protected water. • Development of necessary service buildings for the purpose of recrea- tion .and maintenance. Construction of the first phase would begin in the summer of 1980 and would be completed by the end of 1982. The proposed project is further described in the fold-out plan map on the following page. 3 WHAT IS THE PARK? Gene L. Coulon Beach Park (originally Lake Washington Beach Park) consists of approximately 53 acres of land and water area at the southeast corner of the lake, one-third of which is developed. The remaining undeveloped two-thirds of the park extends approximately 5,800 feet northwest along Lake Washington and offers a unique opportunity for water -related recreational enjoyment. The resulting park development plan has been carefully prepared, taking into consideration the views of Renton citizens, the over -use of the presently developed swimming park, the future needs of a rapidly increasing population, and the natural qualities of the site. The positive interest and involvement by hundreds of persons who have assisted in planning the future of the park have been most help- ful in gaining mutual understanding of the park's goal. THE GOAL Or' THE PARK To serve the recreational needs of Renton citizens through the devel- opment of as natural a waterfront and shoreline park as possible with associated improvements and activities not possible in other park areas. This goal will be accomplished through: • Improvements to the existing swimming park to relieve overcrowding, parking and circulation problems. • Development of over one mile of Lake Washington shore- line in a manner that enhances its natural and environmental potential while providing significant unstructured recre- ational uses. • Expand and improve the water -related activity through the expansion of boat launches, landings, day moorage, over - water piers and protected water. • Development of necessary service buildings for the purpose of recreation and maintenance. PROPOSED MAIN PARK FEATURES Close-up view of renovated boat launch, trailer parking and Multi- purpose Building area. ' Entry Roads Enlarge entry road, providing separate entries for beach park, boat launch and park extension areas with appropriate screen planting. Day Moorage Day moorage would be provided for approximately fifteen boats of all sizes along a breakwater pier with additional space along a dock adjacent to the multi -purpose building. Stream Redevelopment Reshape the existing creek to create a marsh as habitat for existing waterfowl and as a separation between the existing active park area and boat launch parking. Fill material excavated during this process would be used to shape a sunning slope near the swimming beach. Multi -Purpose Building A multi -purpose building is proposed on the shore adjacent to the "Waterwalk" which would contain a large group picnic shelter, rest - rooms, a food concession area and administrative and storage space. A play area for small children is planned to be adjacent to the Multi- purpose Building. Parking for 100 cars is provided on the opposite side of the building near a rowboat rental. Day moorage and waterfront promenade with Multi -purpose Building Small children's play area and Multi -purpose Building. Northend fishing pier. North End Shoreline Development The entire shoreline will be regraded to eliminate abrupt dropoffs while minimizing off -shore fill. The land will be contoured into a series of earth mounds. Two additional shelters and an observation tower would be located on these earth mounds with views of the rowing area and sweeping Lake Washington vistas from Mount Rainier to Mercer Island. A fishing pier with shelter would provide all-weather angling opportunities for all ages and for the handicapped at the north end of the park. Three fishing piers and restrooms are planned, some piers using existing pilings if future tests prove them to be structur- ally adequate. Over 1.5 miles of paved walking and jogging trails will be provided along the shore and through wooded glades connecting picnic shelters, fishing piers and other facilities. Boat Launch Improve and enlarge the boat launch with four renovated ramps provided with side piers to allow tie-up space for boats waiting to be loaded. The ramps would be wide enough to permit simultaneous use by two vehicles during peak hours. Eighty-three drive -through spaces will be provided to minimize the need to back trailers, with an addi- tional twenty-five spaces for overflow parking. The boat launch facility will be developed so that it could remain open twenty-four hours a day, with moorage for a police boat provided along an extension of the existing pier. "Waterwalh" Pier & Log Boom The "WaterwalK an interconnected series of piers, allows people to walk well out onto Lake Washington. Three shelters will allow year - around enjoyment of the walk for various uses such as fishing, viewing and picnicking. It would enclose an area of controlled water for rental rowboats, and other related small craft. This area also connects to the adjacent water area along the north half of the park, protected by a log boom where more room is available for beginning sailboaters and other quiet water training needs. Access through the boom will be provided at both ends. Park Landscaping In keeping with the park purpose of providing essentially passive shore -related recreation, the overall character of the park would be informal and natural -appearing. Heavy use areas near the boat launch and Multi -purpose Building would be irrigated and carefully main- tained. However, as one walks north along the shoreline the landscape would become more natural by degree with increasing emphasis on lower maintenance requirements. Fencing and screen planting will separate the park from the adjacent railroad. A new maintenance facility will provide needed equipment, materials storage and a work area. ESTIMATED COSTS Demolition, fill, grading..............................$1,700,000 Landscape, utilities, parking and site work .............. 2,050,000 Boat launch area improvements ...................... 1,510,000 Waterfront piers/calm harbor improvements............ 1,940,000 Buildings and related services facilities ................ 625,000 Total .............................................. $7,825,000 Mayor: Charles J. Delaurenti Council: Earl Clymer George J. Perry Margaret L. Proctor Charles F. Shane Barbara Y Shinpoch Richard M. Stredicke Thomas W. Trimm Park Board: Nancy Mathews Joan Moffatt Ronald Regis Thomas Teasdale Nathaniel Weathers, Jr. Di rector: John E. Webley 0-3 T I kOA k, / ■ ��, eu ifilk k y r y ll� i 1 I SUMMARY OF ENVIRONMENTAL IMPACTS Topography, Geology and Soils The extension area would be extensively' graded' to reshape shoreline areas''to create a more natural, sloping shoreline. Small areas of fill (totaling ti approximately. one acre) would be utilized to. eliminate existing, artifi- c'ially angular projections into the lake, and to improve functioning of the boat launch. Shoreline grading and fill operations could result in. turbidity and silta- tion of Lake Washington adjacent to the site. Several mitigating measures jare identified to control shoreline erosion and minimize turbidity and sil- ta ti on of the lake. Water There may be an increase in stormwater runoff from the site due to increased. im permeabl a surfaces. Siltation of the lake may occur due to construction activity along the shoreline. Water quality within the existing drainage ditci would be improved because of the proposed relocation of the ditch, I ` inclusion of an oil/water separator and settling basin, shading and by aera- t'i on from the proposed weir. The Parks Department will cooperate with Public Works to assure that the proposed.settling basin and oil/water separators ;are cionstructed. i , e Vegetation . Several existing dominant groups of trees and shrubs have been incorporated into the master plan and would be retained. Much of the site would be cleared and all disturbed areas would be planted following recontouring. I An area of marsh vegetation would be established along the relocated drainage ditch at the south end of the expansion area and adjacent to the beached barges at the north end of the expansion area. W i 1 life - ! Y Diversity and extent'of upland wildlife habitat would be slightly reduced due to regrading and planting of the site. Fish habitat (salmon) would, be I mproved by elimination of angular projec.tions from the shoreline created by s previous fill. Fill projections associated with the boat launch may create ( minor disruptions to juvenile salmon migration causing confusion andlin- i crelsed predation. The Department of Fisheries' approval and a hydraulics permit will be required prior to any construction activity within the lake or l drainage ditch. I � A small area of marsh habitat would be created along the relocated drainage ditch (including nesting islands) and surrounding the proposed barges at the north end of the park. Air Quality There would be no deterioration in air quality due to the project. The increased traffic and increased emissions resulting would be offset by reduced federal emissions standards. The result would be an overall improve- ment of air quality conditions. There would be short-term increases in summertime dust levels during construction of the project. Noise There would be temporary increases in noise during construction of the pro- ,, ject. Upon completion, there would be a slight increase in noise levels on the site due to the increased activity. Light and Glare The proposed development would add several sources of light from exterior safety lighting. The lighting would be screened from adjacent residences by vegetation and distance. Land Use 1 The site would be converted from unused land to a use as recreational land. . I I, Land use on adjacent properties would not be altered. Natural Resources Normal amounts of non-renewable resources would be consumed by construction of the proposed project. Construction would commit the site to recreational i _ use for the foreseeable future. Risk of Explosion or Hazardous Emission There would be no increased risk of explosion or hazardous emission due to 9 the proposed development of the expansion area. I Population and Housing The proposed project would not have a significant effect on the population or housing characteristics in the area. Transportation/Circulation The project would result in generation of approximately 1,200 to 1,500 addi- ; tional vehicular trips 'to the site on peak use summer days. Lake Washington Boulevard has sufficient capacity to handle the projected increase without a reduction in the level of service. 8 • Proposed entrance and internal circulation improvements and the addition of a 'second entrance would improve traffic safety associated with the park. Publijc Services There would be a significant increase in recreational services offered by the Renton Park Department. 1; Additional funds would be required annually for maintenance and operation ,of r'° the expanded facility. Energy Increased supplies of energy would be required for the proposed construction and ,continued operation of the facilities. Increased fuel consumption by recreationists at the site would be offset by reduced fuel consumption in other areas. Visitors would not be using energy at home, while at the park, and the facilities would be closer to the homes of users than other beach parks in the region. • Utillities A, slight increase in demand for utilities would result in insignificant impacts to utility systems. Health No conditions would be created by the proposed development which would create health hazards to visitors at the site or to surrounding residents. I Public safety would be improved by improvements to the traffic system, stronger separation of, the swimming beach and boat launch, and by regrading 1 � Of the existing steep shorelines to gentler slopes. The expanded park would be of direct benefit to public health providing a new opportunity for active recreation. Aesthetics Aesthetics of the site would be improved by recontouring of the artificially flat fill surfaces and by extensive planting. Several provisions would be made for public enjoyment of lakeside views. _ . Recreation There would be a significant increase in the types of recreational activities and! use of the site. Existing conflicts between user groups would be reduced �by 'physical separation of activities. Archaeology/History 1/ There are no known archaeological or historical resources, and impacts due to the proposed project are unlikely. 9 1 I� 1 SUMMARY OF MITIGATING MEASURES ' Geology and Soils The use of temporary detention facilities during construction would allow settling of silt before runoff enters the lake. Construction during the dry q season and planting. immediately after construction will also minimize ' erosion. Water Silt traps and oil/water separators in all catchbasins, in parking or roadway areas, would remove silt, petroleum products and some heavy metals from 1 stormwater runoff. The use of bulkheads or the construction of the leading edge of fill first (filling in behind the leading edge) , and the use of granular fill would minimize the potential for turbidity and siltation of the li lake shoreline. Vegetation Planting immediately following regrading would mitigate the loss of vegeta- tion. Wildlife Potential impacts to fish would be mitigated by elimination of angular pro- � . jections of fill associated with the boat launch preventing potential dis- °, ruption of juvenile salmon migration along the shoreline. Limiting con- " struction activities (particularly pile-driving) to the summer and early fall would avoid potential impacts to incubating salmon eggs. Air Quality . Use of proper operational techniques during construction would minimize the level of dust resulting from. construction activities. Improvements to internal circulation would minimize vehicular pollutant emissions by reducing congestion. ' Transportation/Circulation 1 Traffic congestion and potential hazards would be reduced by proposed improvements to parking, internal circulation and entrances. SUMMARY OF ALTERNATIVES The present proposal is a substantially less intensive alternative than was previously proposed (see PROJECT DESCRIPTION) . 11 10 i No-Action A decision not to approve the proposed development would leave the site in its existing state and prohibit recreational use of the land as designated by the Comprehensive Plan. The major result of no action would be to prevent or delay all of the environmental impacts discussed in this document from occur- ring lat the expansion site. Less ;Intensive Development If the amount of fill required for development or the number of facilities and structures were reduced, there could be lower construction and mainte- nance costs to the City than the current proposal . Infinite adjustments could be made to the proposed park extension, such as no fill and no overlook tower or multi-purpose building, fill and dredging only at the boat ramps with �no stream relocation, fill only to smooth existing angular projections into the lake, or no boat ramp expansion. Any of these less intensive alternatives would have approximately the same . overall impacts. The City expenditure for construction and maintenance would be somewhat less if fewer facilities are constructed. Fish movement would not be improved from existing conditions without fill to smooth out the 1 shoreline; however, fish movement might be slightly improved by elimination of the proposed fill associated with the boat launch ramp. Alternative Location There are no comparable areas of undeveloped shoreline along, the south end of Lake, Washington that would be suitable for park development. Virtually the entire shoreline is intensively developed for residential , commercial , or ti industrial use. 1 Development away from the lake would not allow the water-oriented views and activities associated with the proposal . Existing park congestion and con- , f,lidts would continue to become worse. UNAVOIDABLE ADVERSE IMPACTS Geology and Soils Decrease in soil permeability due to buildings, paving and compaction. Repo- siti,oning and overcovering of soils. Water Possible increase in stormwater runoff volume. Temporary, slight turbidity and' siltation associated with fill .' i 11 , III , Vegetation ' Elimination of sparse second-growth vegetation and replacement with grass, shrub and tree areas. Wildlife Possible elimination of a few common species from the site resulting from a decrease in extent of habitat but offset by increase in diversity resulting from the new marshes.• 1 Noise ' Slight change in noise patterns due to changes in internal circulaltion. Natural Resources Consumption of common building materials for construction of new facilities. Transportation/Circulation Increase in traffic volumes to the park. Public Services Significant increase in funding required for maintenance and operation. 1 Energy Consumption of additional quantities of energy for heating and operation of ,' J expanded facilities, travel to and from the site, and power boat uage. Utilities ' Increased consumption of water and electricity requiring internal extensions for each system. • i • 12 I v • . Description of the Proposal 1^ . . NAME OF PROPOSAL AND SPONSOR The City of Renton Department of Parks and Recreation is proposing to con- i struct an extension to Gene Coulon Memorial Beach Park. LOCATION • The park is located on the southeastern shoreline of Lake Washington within ' . ' the city limits of Renton, Washington. The park is adjacent to and wouldlbe —., a� extension of the existing Gene Coulon Memorial Beach Park as shoWnlin , F, gures 1 and 2. • l OTHER AGENCY FILE NUMBERS Nonel , CONSTRJCTION SCHEDULE - ) '., It is anticipated that the first construction would be initiated in the .wouldi su mmer of 1980 with completion by the end of 1982. Waterfront workbe f . . completed during summer and early fall in compliance with Department ! of ` Fiisheries' requirements to avoid potential , impacts to spawning salmon. MAJOR (PHYSICAL AND ENGINEERING ASPECTS I I ,' The proposed plan for, the extension area is illustrated in Figure 2. , i• The extension area includes approximately 30 acres in a narrow shore line ti--' strip extending northward a mile from the park (15.3 acres are above water . ' and 14.1 acres are below water). ; . The site is undeveloped waterfront property that was created by fill for ithe ' Previous industrial use of the site. 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W' .W _: �... „ = ---- LAKE WASHINGTON BOULEVARD ?ZE .47 o ealr-7.aTa6 11JL1L77-4E 0 500' 1000' L_ AI.,, SITE PLAN 0 0' 1: _�� �..0- Yn= .� � ` ,� 1101n - - FIG. 2 ill II � park as possible with associatIed improvements and activities not possible in I other park areas. 1 The major elements include expansion of the existing boat launch ramp, addi- tion of a second vehicular access from Lake Washington Boulevard, internal pedestrian and vehicular circulation, day moorage for boats, picnic shel- 1 ters, concession and restroomibuildings, fishing piers, a fixed-pier wave- break, and fill , grading, and 'planting of the site. The entire shoreline will belregraded to eliminate abrupt dropoffs while minimizing offshore fill . The' land will be contoured into a series of earth mounds. Two additional shelters and an observation tower will be located on these earth mounds with views of the rowing area and Lake Washington vistas from Mount Rainier to Mercer IIsland. A fishing pier with shelter would provide all-weather angling opportunities for all ages and for the handi- capped at the north end of the' park. Three fishing piers and restrooms are planned, with some piers usinglexisting pilings if future tests prove them to be structurally adequate. Over 1.5 miles of paved walking and jogging trails will be provided along the shore and through wooded glades connecting picnic - rA 'I shelters, fishing piers and other facilities. The boat launch will be improved and enlarged with four renovated ramps provided with side piers to allow tie-up space for boats waiting to be loaded. The ramps would be wide enough to permit simultaneous use by two ' vehicles during peak hours. Eighty-three drive-through spaces will be pro- vided to minimize the need to back trailers, and an additional twenty-five ' spaces for overflow parking will be provided. The boat launch facility will II be developed so that it could remain open twenty-four hours a day, with moorage for a police boat provided along an extension of the existing pier. The "Waterwalk", an interconnected series of piers, allows people to walk well out onto Lake Washington. Three shelters will allow year-round enjoy- ment of the walk for fishing, viewing and picnicking. It would enclose an area of water for rental rowboats, and other related small craft. This area also connects to an adjacent water area along the northern half of the park, protected by a log boom where more room is available for beginning sail- boaters and other quiet water training needs. Access through the boom will be provided at both ends. In keeping with the park purpose of providing essentially passive shore- , related recreation, the overall character of the park would be informal and 16 i7 V ! natural-appearing. Heavy Use areas near the boat launch and multi-purpose building would be irrigated- and carefully maintained. However, as one walks - '?h - north along the shoreline the landscape would become more natural by degrees with increasing emphasis on lower maintenance materials. Fencing and screen planting will separate the park from the -adjacent railroad. A new main- _ tenance facility will provide needed equipment, materials storage and a work . 4- area. ' ' The proposed plan would provide for separation of boaters and swimmers. through a redesigned entrance road and separate parking areas. A substantial b„erm would visually separate the swimming beach area from the boat launch area. The separation would be further emphasized by relocation of. the 1 . ' elxisting drainage ditch. The existing drainage ditch would be moved to the southwest side of the boat launch. The water quality within the ditch would be improved by construction of a settling basin and an oil/water separator above the park. The proposed . 1-7 channel would be designed to appear as a natural stream. bed incorporating a ` marshy area and instream islands and would flow past one of the existing c' - picnic shelters. c ! I . The use of the northern portions of the park extension area would be More. - 1137 passive. . Development would consist primarily of open spaces, walkways, ' small fishing piers, a picnic shelter, an overlook tower and two small -, parkk ing areas. Two barges would be beached to recreate a feeling for 'the - , historical use of the site which was water-oriented and industrial (see ARCHAEOLOGY/HISTORY section). • ,Lake fill for the entire project would consist primarily of several small areas to "round-off" the angular fills that were created' by the previous ( yindustrial use of the site and to provide a more natural appearing shoreline. Additional fill is proposed adjacent to the boat launch to improve fi nc- �' ,ationing and safety and to provide a physical and visual separation between • the existing.,swimming. beach. and. the 'boat .launch. A total of approximately )-' • one acre of surface area would be filled. - Thi entire plan represents a scaling down of the -number of facilities and the x� quantity of fill proposed in the original master plan prepared for the 'extension area in 1976. Fifteen acres of fill were originally proposed for • • •;the park. . The presently proposed park extension represents a commitment .to . 17 . q , work with the existing site conditions and limitations rather than exten- li sively modifying the site to accommodate all recreation demands as pro- posed in the original master plan. EXISTING LAND USE PLANS AND REGULATIONS A master plan for the park entitled: Lake Washington Beach Park - The Phase II Planning Program and Master Plan was adopted by the City of Renton in April , 1977. The plan recommended. approximately 15 acres of fill and elab- orate shoreline modification and structures. The facilities recommended would have been extremely expensive and of questionable feasibility from engineering and environmental standpoints. A recognition of these and other limitations led to the the development of the present proposal . The site is zoned G (General ) .and H-I (Heavy Industry) . Both of these categories would allow the proposed park development. The City of Renton Comprehensive Plan designates the site as recreation use. The Shoreline Management Master Plan for the City of Renton allows recrea- tional use of the site and identifies restrictions and regulations for speci- fic facilities. The proposal is consistent with the City's Shoreline Manage- " ment Master Program. i . 18 . I Existing Conditions, Environmental Impacts and Mitigation; • w, ®.Elements of the Physical Environment . • TOPO;GRI{PHY • Ex�i sting Conditions "1 • Thle site is essentially a flat shelf several feet higher than Lake Washington __.', with steep banks. This topography is the result of. fill and grading for the plevious industrial use of the site. There are only minor variations in . ; topography throughout the site. Environmental Impact I . • The proposed plan recommends minor regrading. throughout the site. The banks J • along the lake. would be ' cut back in several locations to create a more • gradual, natural and accessible slope to the shoreline. The material ,from the cuts would be placed in other areas to create mounds, adding variety and providing views as well as providing more secluded spaces in the cut areas. 4 Approximately 65,000 cubic yards. of material would be repositioned within • the site. No need for significant quantities of . imported fill is antidi- ' pated. Proposed fill ,within the lake is discussed in the following section. V GEOLOGY. AND SOILS Existing Conditions A,Ige1ology and soils 'engineering consultant was engaged to evaluate 'soil . conditions of, the site. .,Onshore test .pits and borings and offshore borings were utilized to identify existing conditions (see Figure 3). The full . 4 report of the findings is available . f or review at the Renton Parks. and y Recreation- Department'. A summary is presented here. The portion of the proposed park expansion, presently above lake level , has all been developed by previous filling and is nearly level . The property was -- pi^eviously used as "acargo transfer area, and log storage area as suggested by the numerous iles, driven offshore. The lakeshore itself is r ; - P characterized • by a line of logs and timbers, large concrete -blocks, some quarry stones; and considerable miscellaneous debris. The shoreline generally is. steep; and appears to be subject to active undercutting by wave action. Immediately offshore are a series of pile clusters and submerged concrete blocks and . tip` metal service ladders. . ' 19 z_ . . . .. . , • . • , • • /-=,"-- . . . . . . . • . . . . . NoKTH(2) . . • i,ake tAlr-AiiiI4ista- ' I .. • ••• . . , .••• • •, . . ..• . .00 e . . . . . . . . . . • ;•9/fgeox#Pire,g,e.5.9-op'pie.i- . . . `.‘ • i 4,. . . - „A .... ..,,, .;:, .•.;••• _ \ \ ...... 1.1r .,(5 ° •...,,..,;. /3•3 79,9440100/41X.AREA eFF Pitt- -‘ .0........... • ..... ........ • ......, 1144.3,,,, • • AL :.15-4 ...t ' \ _......0........... 8-1 0-- •.... Ir./-MI '"•ss- \ . ••• .... .00. .... • ., 8'2- 7-P-2. -7P-3 ' ....------7----. El\ • ,,,;%3: 00 000,........ .1 Aimixiss...............2 , -vas-0 .......'" . .... :.... . ,:, , . v.) c), , , ................... ,..... . ..............................................................4............................................................................................................................. - LAK 4-'-71,Arre.0' Zow4a •,e-1:, ' r . • . . . . . , • . . .. . . . . . . . • . . • --iroe-Jr-Pirterilami . . , . . . . • 0 avefiv& z-Oenr1eNV ' ' • • • 0-• 500' .1000' . • 0 eirRoXlitfire ;dtie4- op-pia- . . . , • t_rL_IL__I . • . • . -. . . . . . . .. . . • • . ' . .. [' SOIL SAMPLING- ...: __ ______ 4 0-.;. . - --..„ . — SITES ' . . 1 ' -,• -•;.77illiw-'40 •'•011 'ilr ' -- -1 lirq -No- !Xi -I . . • FIG. 3 . • . • . . • . . • . _ __ _ ,,.. . , _.....,-. ,, • . . . . ,, ) • • .. - I f The onshore borings encountered very loose to medium dense, gravelly; sandy fill to depths of 12 to 18 feet. Underlying the. fill in the borings are ' '---• medium dense to dense, saturated, -fine to coarse sands with gravel . Boring i7 nImbit 2 had approximately 4 feet of peat beneath the fill, followed by very "___ loose to loose sand and' gravel grading to 'medium dense, silty, fine to medium sand and gravel at 36 feet. Although •massive. rubble. was not encountered !in . • the borings, exposures along the shoreline indicate that large quantitiesof wood, concrete, bricks, and other materials may be present. N At the offshore boring locations, very loose to' soft sand and silts were present to depths of 13 feet. Underlying these soft, saturated soils are it \ medium dense to dense, 'saturated, fine to medium sands with gravel . , The offshore soils are characterized by surficial, very loose to loose, and soft '. ''-,'i . _ miaterials to depths about ten feet below mudline at the borings. Closer' to shore, the near-surface muds 'and soft soils are approximately one to three • �; feet deep. i 1 Groundwater at the onshore boring locations was encountered at approximately' . r*. 7 feet. The groundwater table is probably at lake level near the shoreline. v Some borings indicate rises with increasing distance from the lakefront. 1In ' addition, the fill probably has lenses of permeable soil containing perched Vf or trapped water. AlSo, 'the silty areas, that appear in the fill , trap water at .he ground surface and result in ponding during wet weather. j ;'! Environmental Impact ' . - OnsIore clearing and grading, within the areas already filled will expose rubble or debris which should be covered by soil . Clearing and grading will . result in minor, temporary increases in erosion potential . 1' Due to the silty nature of the on-site soils, proper compaction will be 1 'dif icult or impossible when the soils are more than a few percent above • their "optimum moisture" content. Periods of warm, dry weather are the most 'L.._' desirable condition for a successful filling program. If filling is required •�:-., 'during periods of wet weather, the fill should consist .of clean sand and g •ravel . Clean sands and gravels are not normally moisture sensitive, and can I sually be com• pacted under a variety of climatic conditions. �I i i + Mounds rising up to' 20 feet above surrounding grade are proposed f oritwo 'locations in the park. Because of the weak .nature of ,the• subsoil ;these •f • 21 ! ' fills will undergo settlements of approximately one foot. This would not be . a problem in a park setting. Considering that the existing onshore fills are of variable density and 1 contain quantities of both organic and inorganic rubble, lightweight frame structures supported by conventional spread or continuous footings may be subject to substantial settlement; this will be caused more by long-term settlement of the fill than from the imposed loads. Therefore, consideration should be given to the use of driven timber piling for support. Approximately 21,000 cubic yards of clean, granular fill is proposed along the lakeshore as shown in, Figure 3. In addition, approximately 9,000 cubic yards of rip-rap is proposed (much of this will be above water) . Placing 1 thick layers of fill within the lake atop the loose or soft soils can cause localized shear failures, thereby displacing the mud and causing significant turbidity. The volume of soft soil or mud displaced would be least from fills near the shore, and greater from fills at greater depths. A Hydraulics Permit and Department of Fisheries' approval will be required ' for any construction activity within the lake. Mitigating Measures I Onshore clearing and grading should be completed during the summer months to ' minimize the potential for erosion and siltation of the lake. Disturbed areas should be seeded immediately after grading is completed to stabilize surface soils. Temporary silt traps should be constructed above the shore- line within drainage swales. Fill should be placed according to technical specification identified by the consulting soils engineer to minimize settlement and other potential prob- lems. Building foundation design must consider possible soil settlement as identified in the soils report. Depending on final design configurations, several approaches are available which can reduce mud displacement resulting from filling within the lake. One approach would be to build vertical or near vertical bulkheads, then i placing fill behind them. This tends to trap the mud, but does increase long-term settlements of the fill . If this approach is utilized, it is important to remove the mud immediately behind the bulkhead to, reduce "active" lateral earth pressures. Mud displacement can also be reduced by building the leading edge of the fill first, and trapping the mud as if with a bulkhead. 22 r, In the southern portion of the park where a steep or near vertical bankIis ,+ planned, a rip-rap bank covered by a walkway would be constructed with provision for daylighting the 'water below to allow fish passage. 1 YTo the north, "sliver beaches" and minor shoreline 'modification have been 'I planned. , Water depths of about 6-15 feet are present near areas where existing park grade is some 3-6 feet above lake elevation. In these areas, I` ; it would be appropriate, to excavate the above-water portion of the park sf oreline downward to the lowest practical .elevations to minimize the poten- .` t al for erosion and shear failures or mud displacement beneath the water surf ace. AIR sue, ' 1 Existing Conditions - The Gene Coulon Memorial Beach Park is part of the Puget Sound basin and has a typical northwest Pacific Coast marine climate. Temperatures are mild and - precipitation moderate, with the majority of rain occurring in the winter months. Winds are generally southerly during the winter and northerly during 1 ti`_; the summer. 1 Temperatures in the area vary from a monthly average of 40°F (4°C) in January r__ tb 65°F (17°C) in July. The annual average temperature is about 50°F (10°C) . Precipitation can vary from 25 to 65 inches (64 to 165 cm), but averages about 45 inches (114 cm) annually. Snow occurs occasionally during the winter but rarely lasts longer than, or three days. ' . Winds are of moderate speed with the prevailing direction generally south- J westerly. It is expected that winds at the park will be out of the south; to southwest during the winter months and out of the north to northwest during ;__ the summer. Meteorology creating the "worst case" air quality conditions is most likely. to occur for several days during the late winter months with overcast skies FT and light southerly winds. Localized inversions can occur under northerly - winds during the late summer and fall months, but usually disperse ' each = afterrnoon. The air drainage condition associated with stagnant air will flow . `_ generally from the hill westerly towards Lake Washington. The expansion site is located,within the Puget Sound Air Pollution Control ._,.J Agency non-attainment areas for carbon monoxide, _ oxidant and particulate f 23 ' matter secondary standard. The major source of these.pollutants is ,the auto- mobile, with stationary source activity reponsible for particulate matter. It is currently projected that these pollutants will be 'in compliance :with the ambient air quality standards by the 1982 deadline:— ' I I Table I summarizes the data taken from air monitoring stations in the Renton area. As shown on Table I, the particulate levels are within the standards. . Carbon monoxide levels are approaching. the eight-hour standard during the "worst case" winter months in downtown Renton. Hydrocarbons (non-methane), are in excess of the standard. Oxides of nitrogen are well within the annual • standard and show the highest average levels during the summer months. • Based on the data, .it is expected that the conditions in the vicinity of the park are similar to the recorded•concentrations at the monitoring sites. Back- ground concentrations of carbon,monoxide are expected to be about 3 ppm. There is a small amount of pollutant emissions'due to railroad activity on adjacent -� rail lines, although the activity level is quite low. The emissions produced • . are negligible when compared to the total emissions from vehicles;•on Lake Washington Boulevard. Environmental Impact . , r. Air pollution will be created almost solely from vehicles using the park. , Pollutants associated with heating .buildings and the railroad are expected to _ be negligible. The.major impact will be the increase in carbon monoxide concentrations from the additional traffic volumes. For the purpose of estimating :air :quality I. impacts, it may be assumed that the proposed expansion will generate approxi • - j mately 1,000 additional vehicle trips daily by 1982.. By 1990, an additional 2,200 trips will be .added to the current traffic levels independent of any . expansion. A California Division of Highways line source model was 'used to . predict the existing and future concentrations of carbon monoxide at a receptor ;r in the park. . 9 The increase in traffic will increase the peak hour carbon monoxide 'concen- trati on less than O.1 .mg/m3 by 1980. By 1991, concentrations will be about 20% of the present levels, even with normal increases in the :traffic. . The current federal standards for vehicle emissions are becoming morestrin- s_ gent which will cause a decline in vehicle-related emissions. 'Based on, exist, i ing data and implementation of federal law, vehicle emissions are expected to decline about 7% by 1980 and about 85% by 1990. 1 . 1 24 • it TABLE I SUMMARY OF POLLUTANT CONCENTRATIONS RENTON AREA . Particulate Matter p? , (ug1m3) Location 1978 1977 1976 ' 1975 Standard S.EI District Health Center 36 38 38 ' 27 60 L i`.i Renton Municipal Building 37 - 51 50 . - 37 60 `- , -.. . - - - . . 1. .- l ' Carbon Monoxide Hydro- ; Nitrogen . ppm carbons IDioxide Locati n Period 1-Hour 8-Hour 6-9 AM ; Study `�, Max. Max. Max. Period Average 1 .Airport Way & Logan Ave'. January-March 1977 9.0 8.0 - - Puget Power Yard June-July 1977 3.2 2.0 0.70 , 0.02 1 March-April 1977 4.2 3.3 1.37 i - October-November 1976 8.1 6.6 - 10.01 - June-July 1976 2.2 . 1.3 - 10.04 ' i Standards: • Carbon Monoxide 1-Hour 'Standard- - 35 ppm Carbon Monoxide 8-Hour Standard - 9 ppm 1 ti !, Hydrocarbons 6-9 AM, 3-Hour Average-0.24 ppm j • Nitrogen Dioxide Annual Average-0.05 ppm j There may be a short-term increase in dust levels due to summertime construc- ti on. However, this would be confined to the area under construction and would crease upon completion. Watering procedures and good operational techniques should keep dust levels to a minimum. Mitigating Measures . Dust resulting from construction work can be minimized through the use of good operational techniques such as watering of exposed areas. Puget Sound Air Plollution Control Agency regulations require that precautions be taken to • minimize the entrainment of dust -in the ambient air. 25. I WATER i Existing Conditions Surface water of the site consists of roughly one-mile of Lake Washington I shoreline and a portion of a City of Renton drainage ditch that flows into the , lake. A few small , intermittent streams enter culverts east of the expansion area and flow under the fill to the lake. Water quality within the lake is generally high. The lake supports a substan- ' tial fish population and is used intensively for recreation. 1 The quality of the drainage ditch water is low. Oil , discolored water, high temperatures, concentrations of certain heavy metals and occasional fish kills II have been observed in the ditch. These factors are apparently the results of runoff from the adjoining industrial area, streets and extensive parking areas. Stormwater within the park either infiltrates the soil and enters the ground- 'water table or runs off directly into the lake. The groundwater ;table is generally near the lake level but is higher at increasing distances from the 1 lake. " I Environmental Impact Two proposed construction activities could result in significant temporary , turbidity and siltation of the waters of Lake Washington. These are the minor fill and the proposed grading of the expansion area. Fill could displace soft mud deposits on the lake bottom resulting in turbidity flows. Exposure of soils on land areas can result in erosion and subsequent siltation ,,and tur- bidity due to the proximity of the lake. Measures to control each 'of those potential impacts are discussed in the GEOLOGY AND SOILS section. Since the project would utilize sanitary sewers, there would be no point source impact to water quality other than from site runoff. Impacts to site runoff 1 water quality could result from pollutants washed from paved surf aces and potential nutrients washed from planted areas. Runoff from paved surfaces 1 contains silts, , oil products, nutrients and heavy metals. Nutrients from planted areas are a result of fertilizing lawns and gardens. The drainage ditch at the south end of the expansion area will be relocated and • modified to create a marsh environment. This will have a minimal impact on water quality within the ditch or lake. Due to the existing low water quality, 26 j . i any collection of aquatic life from the ditch for human consumption shouldibe discouraged until water qual i"ty'i s. improved. A settling basin and of 1'trap has been suggested for the ditch on adjacent property but it is not part of the 17 present proposal . The' settling basin would remove silt and many heavy metals. "�'' The oil trap would be,necessary to prevent oil slicks'which may remain in the proposed marsh for longer periods than in. the present ditch. due to increased L surface area ,and slower moving water. Any construction activity within the drainage ditch will require a Hydraulics Permit and Department of Fisheries :% approval . Mitigating Measures Silt traps and oil/water separators for the on-site storm sewer system would • be i corporated within all catchbasins in parking lots or roadways. These devices will remove oil. products, silt and many heavy metal compounds before the stormwater enters the lake. The effectiveness of 'such devices is entirely • -+ dependent on routine maintenance. The responsibility for maintenance would be -_j placed! with the Parks Department'. (.- • Frequent sweeping of the streets and parking areas could also significantly , reduce impacts to runoff q'ual i ty by reducing silt, litter and some of the he!avy • metals and nutrients. Use of fertilizers, herbicides, and pesticides on the Site should be carefully controlled to minimize the excess nutrients or poisons %Dashing into the lake. C., The settling basin and. oil/water separators suggested for the drainage ditch ' would. improve the appearance of water within the proposed marsh area. Estab- lishment of tall vegetation along the banks of the ditch would shade the water I and might result in reduced water temperatures which .would be favorable to fish . i.) life. Frequent sweeping of city streets and the expansive industrial parking L. l�gts where paved would also improve the quality of water within the drainage ditch. The quality of water within the ditch should be monitored periodically ', y due to potential human recreational use and consumption of aquatic life. I VEGETATION . Existing Conditions ,- • ; The site was previously cleared and graded for industrial use, but not paved. '+ Thus, the entire- site'is in the early stages of vegetation succession. IThe j I 7 r 2/ 1 1 it ,-- vegetation is primarily alder, cottonwood, scotch broom, blackberry and ' grasses. The site comprises a variety of open grass areas, shrub areas, and small stands of young trees. Ii Limited surveys of the nearshore lake bottom indicate that aquatic plants are restricted to the shallower portions of the project area, especially in the silty southernmost portion, where algal assemblages were the only plants found. Macrophytic plants (El ode.a sp. ) appear to be limited to the less silty northern portions of the site, undoubtedly due to effects of increased water turbidity and associated limitation of light, depressing photosynthetic activ- ity. I No marsh habitat is found within the study area, although some minim',al marsh vegetation is found on the island adjacent to the original park. No' rare or endangered species are known to exist on the site. Environmental Impact Vegetation from most of the site would be eliminated due to the extensive grading proposed, and it would be replaced by new plantings. The plantings would primarily be formal lawns and trees in the southern portion of the extension area with more natural open grassy areas and groves of shrubs and trees to the north. Maintenance of open areas in grass will require periodic 1 mowing to suppress weed, shrub and tree growth. Many of the desirable trees adjacent to the present boat launch ramp would be retained in a grove adjacent to the proposed multi-purpose buildings. This location includes several of the largest trees in the extension area. Limited aquatic vegetation will be eliminated in fill areas. Silt from fill areas may cloud the water, reducing sunlight penetration and thereby reducing plant growth. After construction activity ceases, the aquatic plants will grow back. - A new marsh area is proposed within the relocated drainage ditch west, of the boat launch area and would probably support a productive stand of cattails along the banks and on the small nesting islands proposed for the channel . A ' marsh area will also he created surrounding the barges in the northern portion of the park. Mosquitoes are not expected to be a problem since the native mosquitoes do not feed during normal park-use hours. 28 r- fff) I H1 Mitigating Measures - Mitigating measures that are incorporated in the proposal include the follow- , , c ing. - 1. Retention of existing shrubs and trees in areas where grading is not proposed. , 2. Replanting of all areas upon completion of construction. 3. Construction in phases so that entire site is not stripped of vegeta- tion at one time. r , ,j 4. Creation of a new marsh habitat. , 5. Creation of several areas of shrubs and trees that will be allowed. to grow essentially in a natural condition. These would be located ,r generally in the northern. portion of the park. WILDLIFE , Existing Conditions i . i Ijnformati on related to wildlife use of the site was obtained from several ,-' s,1ources. A thorough study of aquatic biology in the vicinity of the park was conducted in 1975 and .1976 for the Puget Sound Power and Light Company. A sub7nsultant (Nautilus Association) was hired by Jones & Jones in 1979 to further investigate aquatic and terrestrial biology of the park expansion area. The results of these investigations were supplemented with site visitsr t during preparation of this Draft EIS. Terrestrial habitat of the site consists of grassy areas, shrubby areas ,Iand' tree groves all in early stages of succession following industrial use ofithe L' site. When compared to more natural shorelines, the edge effect alongjthe lake shoreline is of limited value because of prior disturbances and indus- H_-_..: . trial use. Only two locations have dense shrubs along the lakeshore, ithe area immediately east of the boat launch ramp and a small area near ;the proposed location for the beached barges. . ' i 1 Terrestrial wildlife populations are correspondingly limited and comparable i to (most undeveloped suburban land. . re- The lake provides habitat for waterfowl and fish populations. Waterfowl L. 'include migratory and resident wild bird populations, and resident domestic breeds. . ' r-, __ Fish species are abundant and diverse in the waters of the park. Over twenty species of fish were captured in or adjacent to the park during the' Puget ' . I r , I 29 ; • • • Sound Power and Light studies, including sockeye. salmon; rainbow trout and steelhead, cutthroat trout and coho, salmon. , Cedar River sockeye salmon are a species which were introduced to Lake Washington in 1935 and are' perhaps the most important species in the lake relative to commercial fisheries management. The behavior of sockeye fry • (juveniles just after emergence from the egg) and the wide range in time of emergence from the egg lead to extensive, short-term use of the', littoral shoreline during the, period from• January through May, even though 90% of l spawning occurs in the Cedar River. A limited beach spawning occurs along the eastern shore, which•also contributes fry to the littoral habitat. After - emergence, fry remain in the littoral zone for a short. period bef or;e moving offshore for a 12•-15 month period of feeding on planktonic crustacea pri or•to I smoltification. and migration to salt water. I • Environmental Impact ' . . r • Roughly one-half of the terrestrial wildlife habitat would be disturbed or destroyed during construction. 'Much of this would be re-created as the proposed plantings become established. Although diversity and total popu•la- tions of 'terrestrial habitats would be reduced due to the more', uniform vegetation types, overall populations and diversity would be increased due to the newly created marsh habitat along the drainage .ditch and adjacent to ' : the proposed barges in the extension area. Filling operations on top of the heavily silted bottom will. not only cover important littoral zones with resulting local destabilization of the fish ' 1 community, but may also have more widespread effects due to siltation of adjoining areas. Siltation may depress plant. activity• (photosynthesis) due 1 to light reduction effects of turbidity, both for single-celled plants floating in the'. water (phytoplankton) and for plants attached to the bottom • I and other substrates. ' Reduced plant production could lead to overgrazing ' 1 effects. Visual planktonic. feeders such as juvenile sockeye and • longfin . smelt will experience impaired feeding due to decreased light intensities. Large amounts of suspended materials lead to gill damage in small fish such • • - as juvenile sockeye. . If the mitigating measures identified in the SOILS and WATER sections of this document are followed, siltation and its effects should be slight and 'tempor- ary. Although some shallow-water shoreline habitat would be buried; the 30 _; F- 1 J gradual slopes and granular fill proposed should minimize impacts to sockeye salmon. Pile-driving in the lake, could damage salmon eggs within shoreline gravels. ti Anilgular projections such as those proposed adjacent to the boat launch con- fu'se juvenile salmon migrating along the shoreline and may force them into areas of increased predation. In contrast, the curved areas of fill proposed in several locations north of the boat launch may improve conditions Eby el1iminating existing angular projections of fill and the resulting steep shorelines. The proposed piers and breakwaters will be designed to permiit passage of fish along the shoreline. Thle roposed marsh along the existing drainage ditch and surrounding the L barges will result in additional habitat; however, intense human activity and lack of surrounding habitat immediately adjacent to the small marsh area may limit wildlife use of the marsh to common, relatively tolerant species. Ind winter, when human activity is reduced, this area may become attractive to . '11 wintering waterfowl, particularly those species that may graze on the adj'ia- cent lawns. Impacts of the proposed construction to waterfowl habitat should be relatively minor. Mitigating Measures Allowing the vegetation within the expansion area to grow essentially wild with a minimum of maintenance (mowing, weeding, pruning) would improve the d quality of terrestrial wildlife habitat. Planting trees and shrubs along the sfior lines of the lake and drainage ditch would reduce shallow water temp'era- - tires and improve conditions for aquatic life. The inclusion of food- producing species would further improve the value of the proposed plantings for wildlife. Any measures to minimize water quality impacts would also benefit wildlife. 1- Elimination of the proposed fill areas projecting into the lake adjacent to the boat launch ramp would improve migration movement of juvenile sockeye ,—, salmon along the shoreline. To meet Department of Fisheries regulations, all pile-driving should be conducted between the months of July and October to avoid potential impactto _ incubating salmon eggs. r-r 31 o i I , NOISE Existing Conditions To determine the existing noise levels on the site, measurements were taken at two locations at three different times on the site (see Figur,e 4) . A summary of the noise readings is shown in Table II. TABLE II EXISTING NOISE LEVELS (dBA) 1 1 Site 1 Site 2 Time Park Entrance Northern Portion Midday: (2-3 PM) L10 53 56 L50 50 49 I L90 48 ' 40 11 Peak Hour: (5-6 PM) L10 62 73 L50 58 .60 L90 52 55 Night:- 1 (12-1-AM) L10 54 47 L50 51 37 L90 47 35 ,Noise measurements were taken on Tuesday, August 28, 1979, with a Bruel and )Kjaer 2209 Type I -Sound Level Meter with a, 4165 microphone and wind screen attached, calibrated with a 4230 calibrator. Weather was overcast and tempera- ture was about 70°F cooling to 50°F at night. Winds were northerly in the daytime at 7-10 MPH and were calm during the night readings. . The principal sources of noise at Site 1 included cars and light plane flyovers yrom.Renton Municipal Airport during the day. A lawnmower in the park was also audible. ' Trains pass the park occasionally through the day but none were measured during the monitoring period. Night readings were due to sounds from occasional cars, and I-405 noise was also detectable in the background. • 32 ' -.. -------1 --- r - ; t. _ j • L __ _1 .. - ,, ...„. - ----, r-• ----' r-- , J ,_, 1 • _ • . ', , 1 -----] - -- - • . . . . . . . . • . . • _ , . . . , . . . , . • - . . . . . - . . . . . . .. . .. .. . _.. --- -- --- _______ . . . . . . . . . . • . . .• . .- •. . .- . . ...... . • • 00 . . . ....''- . . e . . . ' , •• . , . . . . • . . . . . . . . .- . . . . . ..$ • . I . . . • • . . . • . . ..- . . , . • ' .... . '''''''' . . . . . . ....c. . , . . . . • . . • .... ......... . .. • - . • . •••........ . . 4 . . . . , . - . ............ . • . . _ .,... . . .. ......... . . • . . . . . . . . . . • ,..z..., . • . . . . --...-- . • P - i - . l's---a- 4•^Q) . . . .00....4..1.0. . ............. . '..".......• .•......... . . ...... ........................................................................4..............................................................................................................................,....) . . _ t . . . . . . . . . _ . . . . . . . . . - , . . . .. . . . . . . - . . . . . . . . . . . . _ . . ' . . . . . . . - - • . . . . . . • . 0' 500" - . 1000" - • 1.. 1__ LI . . . . . . - .. . . . . . . • -. . . • -. ... .. . .,..... -,•,.,,.1.... ...h ---._. .• .... .. .. .. . : . • A..li- . bvib On_ 1 [ NOISE S. E - F-IG. . i. iI SITES „ - - .Di1k _ 4_•_ • -- _. __._. . . .. . . . . . . . . . . .. . . . • . Site 2 noises included traffic on Lake Washington Boulevard, light plane fly- overs and a police siren. Night noises were mostly due to cars on Lake Washington Boulevard, and I-405 traffic was audible in the background. Based on the readings shown in Table II, the existing Ldn noise levels are ' approximately as follows: • Site 1 - 58 dBA Site 2 - 53 dBA Based on EPA guidelines, adverse noise impacts exist at Site 1 at' the park entrance. Levels at Site 2 are in the "generally acceptable" category: The noise levels at all sites are within the: state standards (see APPENDIX for a general description of noise). Environmental Impact The proposalincludes expansion of the park facilities and a resultant increase in traffic volumes. Therefore, the two principal noise impacts created by the expansion will be the long-term increase in noise levels created by additional traffic in the vicinity of the site and a short-term • 1 increase in noise during construction of the new facilities. Table III shows i the predicted Ldn with and without park expansion. TABLE III r PREDICTED Ldn NOISE LEVELS (24-hour average) Noise Existing Predicted Level Predicted Level Measurement Level Without Expansion With Expansion Site '(1979) (1980) Change (1980) Change 11 58 58 0 • 58 0 2 53 53 0 -53 0 As shown in Table III, there will be no increase in noise levels at Site 2. The daytime noise levels will increase adjacent to Site 1 by about 1 ABA, but when averaged over 24 hours there will be no discernable increase. By 1990, the additional traffic will create no increase in noise levels at Site 1 without the park expansion. The Ldn is predicted to increase'1 dBA by 1990 with the expansion, and levels at Site 2 will remain unchanged. • 34 U-' According to EPA criteria, there will be only a slight increase in noise l,lvels due to the proposed expansion. Three dBA is the required increase before the human ear can detect a significant change i.n noise levels. since the increase in traffic is confined principally to daytime hours on weeke ds si and in summertime, the late night noise levels will remain essentially uyich nged from existing levels. The area will remain in compliance ;with state standards. T ere will also be a short-term increase in daytime noise levels due to construction activity;. (For information on construction noise levels, refer to APPENDIX.) Noise 'from construction activities will generally range from 69 to 95 dBA, with some higher peaks if impact equipment is used. Con- struction noises around the site will cease upon completion of the project. Mitigating Measures , j LiongLterm mitigating Measures are difficult to implement because the princi- pal noise increase is due to traffic generated by the site expansion. ', The noise levels predicted are based on the traffic generation predicted by the City of Renton. Noise abatement procedures during construction could include: The use and maintenance of properly operating mufflers and quieting devices; - The use of quietest available machinery and equipment; i- - 7 The use of electric equipment in preference to gas, diesel or pneumatic machinery; Locating construction equipment as far from nearby noise sensitive pro- perties as possible; L- 2,J Shutting off idling equipment; !, � Limitation of construction hours to coincide with the normal workday period (e.g. 8:00 AM to 6:00 PM). f NATURAL RESOURCES The vacant land designated for the park expansion has no significant value as r agricultural land or as a source of mineral or timber resources. The site fould be converted to public use for the foreseeable future. Much of,the dominant natural vegetation of the site would be retained and the more desirable species would be encouraged. { . . 35 I , Normal amounts of non-renewable resources would be consumed duing the con- struction of parking lots, trails, and buildings in the . expanded park. ' Materials used would include concrete, lumber, metals, asphalt and fossil fuels. LIGHT AND GLARE Existing Conditions There are presently no sources of. light and glare within the expansion area with the exception of sunlight and reflection from the lake. Environmental Impact Limited exterior lighting will be provided within the southern half of the expansion area. Lighting will be of low intensity, as necessary for safety, and will generally be separated from adjacent properties. by distance and screened by vegetation. Thus, there will be no significant impact from the proposed expansion due to light or glare. .I RISK OF EXPLOSION OR HAZARDOUS EMISSION There are no unusual risks of explosion or hazardous emission connected to the expansion of the Gene Coulon Beach Park except a potential temporary risk during construction. Safety requirements and precautions would be observed during the time of construction, and would largely compensate for any poten- tial construction hazards. Paint and fuel will. be stored 'in .the, park main- tenance building but implementation of standard safety requirements will avoid potential hazards. LAND USE Existing Conditions , The City of Renton Comprehensive Land Use Plan (1976 Revision) designates recreational use' for the area of the existing Gene Coulon Beach Park and adjoining expansion property. A designation of heavy industry is given to the area south of the park, high density multi-family is assigned to the area ? ' to the east, and .at the northern end, single-family residential use is specified. Existing land use conforms to the Plan designations (see Figure 5). The land between the Burlington Northern railroad right-of-way and the Interstate 405 corridor is primarily vacant, with a golf driving range, a mobile home park, 36 ( l I 1 \\\ I\ 1 . ..,,,.•L f H L, I ,I I I I I I I I I I E I I I, I I I L�ir 1 • lll1.P N. W •1N • h E 3a.Yg n • II \\ % • -1'1111111'11111111111111 - - i �A �• ynv�cE fflhULy 1 ' , a IIN91 ;11111IIIIII I --1. iIIIu111/11111111111111' I '\''\ '' ,�}/ a'D '� �f'oR111111u1M1 I mn .. \ ' � • 3T ID�N r/f L wL t IV I ! T /zPf __ A J _t c ink- , r i! c I ' • . plip • .t 1 �J &o1 F DRI t,YN& RANG* r 1 s L "` : ' - '. Si` -,.- 4kij, SINGLE FAMILY, '1 '�� _, i a /Q �DENT/A'1- • ",-- I • , 4ee/9- V VtAt‘ V 1 ? i,r1, .-:. _i_ _L_____. .- ,b.,.... . , !.,,„„400, , .. -..-.{-7. \ .4. ,, r /5Tl/U6 P , J/I A ,:,- \ - . F k,.-. ( i g ' j, S1A/G[ PAili/Gfri ,46). / t L! R,SlDo7A'L �� `` RuoRR e 1 4t1 --N E.- _' P4ILkOA-D - 151NP. 46TON ,, \ - — c- ^�, � � 1 ,_s .. o,_ ,,, C, 25t9E//v , / • .1,1 \ .. , ‘ , � L0,7,7_ ,O /�' r` /Nixe xyJ 1 \T7_.. . _ _\ ,, ,.. 0. 1 _ ... ., 1 , 3...., , • GENERALIZED • —•- !° . . sic n LAND USE FIG. 5 . r / i 37 ' . - . • . . . -• • • . ,. • 1 . I • • . . ., , . . • • I .. . . .. . . . I. , \ 7". rm : ' r-111-0 . .. . . 4 -GS"I • :, -, : \'.V:2 iiiIK1111111111111111111111ct•E MI . , : i. f•;,; .- - ' s R 54 : . • i.M1111011111111111111111111111111 .: II 1111/1 s, ‘•'7' -2 ,.• _ .,..,,,.. 1 /.•• 1 it.,--, •„,,c.cbA5-1- . MIMI 11 111M111111P111111111111!:, - -I I li!i '1 '1 -• C '- . . ?ir.---,- • , 1..ii. ill111111111111111M11111, G 72 rt .iil ,.-\... 1R-1 . -2.S., •-- .•,!.11i l'IMIIIIIIIIE111111111111 l' . - 1111 - .... ,1 ., . 53 1 'Pr. — 1 128s : MO 2,9 . ,—,- , •, : \ \ \ . 'Fi..-5-T. - ::::, 1..ii. :: . . ' . , --;\ill • ' -,-- is-- im......--':-,—z-__ ..._._ 1 7.• . 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' — * , A.•:;, ilik , • • . . . . ii,...,, . .• • FIG 6 . ilirc,:-'.„,-,Ak, , . 10n. ZONING . . - • , . • .. • . • • 38 1 and the Griffin Home (foster home for boys) located at the northern end of the area. Single-family residences adjoin the site to the north. and extend, along the eastern side of Interstate'405. Thle western edge of the expansion area is coincident with the shore of Lake Washington and was formerly used as an area for log shipping and storagie. iThe Shuffleton Power Plant, a steam-generating plant operated by Puget Sound i_,_' Power' and tight Company, is located at the southwest corner of the park, and the large plant buildings. and parking lots of the Boeing Company and Pacific Car nd Foundry occupy the area south of the park. Zoning Single-family residential (GS-1 and G) is the zoning designation for the 9is ing park, and heavy industry (H-1) is specified along the lakeshore extending northward as shown in Figure 6. Heavy industry zoning also covers the entire area south of the park. { A small area of B-1, business use, is applied to a trailer storage business located east of the park entrance and this is adjoined by a multi--ram-Hy residential (R-4) area. The remainder of the land around the east and north sides of the park is zoned single-family residential (G-6000) except fort a i trailer park (T) and a public use (P-1) zone. . , , Environmental Impact - i The expansion of. recreation use in the area north of the existing park would be consistent with the land use policy of the City of Renton. Developmentiof i park facilities and access would alter vacant land and convert it to passive recreational use. . i�' - Land use patterns in the adjacent areas would not be expected to change, and ' no significant impact to land use is expected due to the expansion. r Recreational development would be permitted under the present zoning desig- `J nation (G and H-1) and therefore, no zoning change would be necessary. ; , , i I ' I i 39 1 I 1 , � ® Elements of the Human Environment POPULATION AND HOUSING l Existing Conditions The! Gene Coulon Beach Park is located in Census Tract 253, shown in Figure, 7, which is coincident with PSCOG's AAM District 3820. For purposes of clam- parison, the area was analyzed (see Table IV) to assess the characteristics and growth trends of the population closest to the site, as well as the "Ci ty of Renton and King County as a whole. Table V shows the projected area growth for the surrounding AAM Districts as compared to the County, and Table VI shows the housing characteristics. The housing information is collected from the 1970 Census tables and is therefore ten years out-of-date (especially note dollar figures). Environmental Impact 1 The proposed park expansion is not expected to have a significant effecti on exifsti g population or housing characteristics or trends. Visitors to the park mostly live in southern' King County, and as these areas grow in population, the park isitation figures are expected to increase proportionately. The park expjansi on itself, however, is not expected to draw a significant increase of new1 people or housing to the Renton area. TRANSPORTATION/CIRCULATION . Existing Conditions 1 The City of Renton Traffic Engineering Division has reviewed the proposed' plark expansion and has provided the following information related to traffic. 6 1- Access to the park is provided by both Lake Washington Boulevard with vehicular access at the south end, and by water (Lake Washington) for pleasure boat users. Most boat users arrive at the park by means of the street system,; so this lection will concentrate on automobile traffic on adjacent streets land withiri the park.. ' The capacity of Lake Washington Boulevard at Level of Service "C" is 1,200 vehicles per hour. The 1979 Average Daily Traffic (ADT) is 6,000. Peak hour traffilc demand on Lake Washington Boulevard occurs on weekdays between 6:30 land 8:i0 AM and between 3:30 and 5:00 PM. The projected 1990 ADT without the proposed park expansion is 8,200. 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( ; t -.-,,,.., •-. \- — .... ._, • — .-- -.,' .__ .• — - . . • -- — 1111111 alit IND Ile TABLE IV POPULATION CHARACTERISTICS AND TRENDS AAM Districts: 4000 3850 3860 3820 3840 3830 Renton King County Census Tracts: 247 250 251 252 254 255 253 256 257 258 1970 Population 6,416 5,230 4,156 4,968 4,840 3,036 5,917 3,558 3,488 12,300 25,258 1,159,230 1978 Population* 6,824 5,462 4,628 4,692 4,401 2,754 6,056 3,567 4,871 11,906 29,300 1,186,903 AGE 0-9: 22.3% 23.1% 25.1% 23.5% 18.5% 23.7% 13.4 27.3% 23.0% 26.9% 19.6% 17.6% 10-19: 21.5 25.0 20.9 20.0 16.3 20.6 15.8 16.5 16.2 19.8 17.2 18.7 20-34: 20.1 16.8 25.4 23.7 25.4 23.8 22.0 28.6 30.5 27.1 25.1 22.9 w 35-64: 33.6 33.0 25.6 27.6 30.2 29.3 35.6 24.7 27.2 24.4 30.5 32.0 65+ : 2.5 2.1 3.0 5.2 9.6 2.6 13.2 2.9 3.1 1.8 7.6 8.8 SEX % Female: 49.7% 49.6% 48.9% 50.6% 53.5% 49.7% 51.0% 49.4% 50.8% 49.8% 51.0% 51.1% RACE % Black: 1.1% 1.0% 1.6% 0.5% 0.5% 1.5% - 2.0% 0.6% 0.4% 0.8% 3.5% MEDIAN INCOME ($) : 14,757 16,589 11,356 11,376 10,248 11,337 10,282 11,741 12,212 12,066 11,120 11,886 Source: 1970 Census *PSCOG Estimate TABLE V POPULATION GROWTH PROJECTIONS AAM Districts: 3820 3830 3840 3850 3860 4000 King Co.*** 1970 Population* 5,971 11,770 7,026 4,156 12,844 11,472 1,136,064 1978 Estimate** 6,056 11,906 8,438 4,628 11,847 12,286 1,186,903 1980 Forecast 5,912 11,931 8,518 5,458 11,626 13,186 1,170,803 1990 Forecast 6,394 12,866 11,310 7,275 12,760 14,079 1,349,136 2000 Forecast 6,629 13,751 14,177 9,561 13,981 16,193 1,529,186 * 1970 Census data. ' ** PSCOG estimate (T-208 run; February, 1977). *** Represents urbanized portion of King County only. TABLE VI . . HOUSING CHARACTERISTICS AAM Districts: 4000 3850 3860 3820 3840 3830 Renton King County Census Tracts: 247 250 251 252 254 255 253 256 257 258 All Housing Units* 1,942 1,390 1,179 1,524 1,823 930 2,656 1,064 1,719 3,628 9,655 . 423,783 Percent Owner Occupied 71.7% 86.6% 78.2% 62.7% 48.7% 75.3% 49.4% 83.7% 36.5% 71.3% 52.0% 58.5% Median Value ($) 29,033 31,700 21,186 20,945 17,500 18,545 17,524 22,169 23,976 21,389 19,600 21,700 Median Rent ($) 165 154 120 99 117 120 100 126 118 144 - 109 114 Persons per - - ---- Dwelling Unit** 2.91 3.21 2.84 2.81 2.28 2.82 1.91 2.88 2.28 3.05 - 2.42 * 1970 Census data ** 1978 PSCOG estimate . . •• City of Renton's Six-Year Street Capital , Improvement Program for widening 'to four lanes with curbs and gutters, .sidewalks, lighting and channelization.: The . • estimated construction period for the improvements is 1983-1985 although funds for the construction have not presently been identified. The improvements will increase the capacity of the boulevard to 1,500 vehicles per hour at Level �!of . Service "C".. Traffic generated by the park and using Lake Washington Boulevard fluctuates seasonally, daily and hourly. The heaviest traffic occurs on sunny, summer 1, weekends between 11:00 AM and 12:00 Noon. The summer peak day -traffic averages 2,500 vehicle trips with 10% of these occurring between 11:00 AM and Noon. , Weekday peak. traffic generation is also heaviest in summer with 2,000 ADT, but the ,peak demands occur between 12:00 Noon and 1:00 PM, and between 5:30 and .6:30 PM. Thus, the peak park traffic generation. does not generally coincide `', withpeak commuter traffic on Lake Washington Boulevard. . , I . _ Congestion within the park occurs during peak hours and conflicts arise due to i insufficient parking for boat trailers. Congestion at the boat ramp occurs primarily due to• inefficient use of the ramp because of a lack of finger piers or other facilities for I handling boats in the water. . - The part is presently served, by METRO Bus Route 240. A bicycle route circling Lake.Washington and serving the park has been .proposed. and- partially impl - mented, but not within the vicinity of the park. Except for an existing pedestrian walkway from the Renton Highlands beneath Interstate 405 to 'the entr, nce, the park is ' not easily accessible to pedestrians due to a lack of ( pedestrian routes and heavy. automobile traffic in the area. 1 Environr�rental Impact . (= • The expansion of the Gene Coulon Beach Park is expected to increase peak day ; traffic generation. by approximately 1,200 to 1,500 vehicle trips per day. The type' of traffic and peak hour demand should remain unchanged after the park . expansion. The increased traffic generation. is well within the capacity of . Lake, Washington Boulevard without a reduction in level of 'service. • I Access nd traffic safety for the park will be improved by the expansion due to ', I I ll .1) provision of a secondary entrance, 2) improved internal circulation incllud- ` i'ng separation of parking for different park uses, and 3) provision of expanded turning lanes on Lake Washington Boulevard. . 45 II ' r Ii 1 Additional finger piers and separation of lanes for the boat launch should. greatly improve the circulation and efficiency of the boat launch. Additional boat launch parking will be provided. The proposed improvements are! shown in the Master Plan (Figure 2). Bicycle and pedestrian access and circulation will be improved due to the provision of a. trail system through the park with possible linkage to future trails outside the park. 'UBLIC SERVICES is I ire • The Renton Fire Department answers all fire and emergency aid calls for Gene Coulon Beach Park; average response time to the park is 21 minutes. The main _ ! fire station, located at 211 Mill Avenue South, will supply a pumper, ladder and aid-car unit on any fire call , and back-up service, provided by the High- lands Station, will supply a pumper and an aid-car. Problems commonly dealt with include car fires, boat fires, fires set by vandals, and occasionally a !. call for an injury or accident. The expansion of the park and increase in use would require a slight increase in fire protection services. The design of the expansion area would conform to requirements of the Renton ,Fire Department and Uniform Fire Code. These requirements include: - an emergency access road to the northern end of the expansion area with an adequate turnaround; - fire hydrants at 500-foot intervals along access road; - fire hydrants within 150 feet of all piers; - fire hoses of 12 inches at the moorage pier; - portable fire extinguishers in the multi-purpose building. Police Existing Conditions Adequate police protection is currently provided to the park by the Renton Police Department. City-wide, the Department is reported to be understaffed. The City of Renton ratio of police officers per thousand population is 1.67, slightly below the national average (2.3). and consequently, a request for three additional officers has been submitted in the current City budget. ' 46 I. J i . I r • • t . Patrol calls to the park- deal most commonly with problems of drinking, rowdyism • and noise. These problems are greatest in the early summer, as longer days and warm weather promote the heaviest use of park facilities. Problems of parking enforcement and traffic control require continous q police attention during holiday weekends and Seafair week. . Environmental Impact ti Although! ugh some pressures of overcrowding should be alleviated, expansion of' the parka and an. increase in use could require an increase in patrolling by police and park personnel . With the requested additional personnel , there should be no 'problems of adequate police protection. 1 i The proposed observation tOwer may present opportunities for vandalism, as has occurred previously with, the existing tower in the children's play area. . The 'Cit of Renton pays :for King County patrol boat service along the shore • - line and since the response time of the County patrol is slow, the City would p like,to purchase its own. fire. and police patrol boat. Moorage space would be - ' prov1ded at the park. In all cases, funding for increased services is a policy issue that must be ti considered by the City Council. Mitigating Measures - The expansion area could provide for a separation of user groups: family groups • utilizing the existing beach area and teenagers using the northern expansion area, This type of voluntary separation happens at several other beach parks • in the Seattle area and could reduce any potential conflicts. between the two groups (see RECREATION). . Hospitals Valley General Hospital in Hospital District No. 1 serves the areas of Renton and Kent. The hospital is operating above capacity at the present time and as I i ! a consequence, an $18 million expansion program is proposed to begin next year: One of the major areas o,f expansion is to be for emergency services where, demand is projected to approximately double in the next five years. There would be no significant impacts to hospitals associated with the expand, . . sion of Gene Coulon Beach Park and any calls for emergency treatment could.'�be readily met. I 47 L � I Schools The park expansion would not significantly affect current or future enrollment in the Renton public schools. Increased learning opportunities for study of vegetation and wildlife habitat would become available with the expansion of the park. laintenance The Renton Parks and Recreation Department is responsible for a maintenance program now in effect for the 22-acre developed portion of the Gene Coulon Beach Park. With the exception of the lifeguard staff, the current total budget for the park is $120,000 for all utilities, supplies and services. While the park expansion is expected to double the site capacity, maintenance costs would only increase by about 65%. An estimated total budget for the expanded park is $200,000, mostly as a result of the addition of two full-time staff members and a part-time summer helper and as a result of increased building maintenance for the multi-purpose building. The current level of care would be continued, but design requirements for the new section call for a substantial return to native vegetative cover which requires little or no long-term maintenance. In the northern portion, initially, irrigation would be used to help establish the native landscape and ' undesirable species would be weeded out, but this level of care would end after the first year. Parks and Recreation Provision of a large swimming beach and a boat launch ramp make the existing Gene Coulon Beach Park a popular and heavily used recreation site for south King County residents. More than half of the park's patrons come from areas other than Renton, according to user surveys. The site provides good, level public access to the Lake Washington shoreline, which is an area largely foreclosed to the public. Other park and recreation sites in the vicinity include Mothers Park, Liberty Park, Cedar River Park and Trail system, Windsor Hills Park, and North High- lands Park. Boat launch ramp are available at the mouth of the Cedar River, at 1 Atlantic City Park and Seward Park in south Seattle, and at Newport Shores in Bellevue. 48 1 i The 'addition of four boat launch ramps would relieve some of the demand on the existing launch facility, and would provide additional access for boaters from the metropolitan areas ;south and east of Lake Washington (see RECREATION). - Expahsion is expected to, double the, capacity of the site and thereby alleviate ti recreation demands on other surrounding parks. ENERGY, !._' Existing Conditions Energy consumption at the park is limited to electrical use for lighting and irrigation equipment and fuel used for park maintenance vehicles. Park use i electricityf t was 204,330; KWH in 1977 and 176,670 KWH in 1978, reflecting the conservation efforts of the Department of Parks and Recreation. ,! Energy in the form of gasoline is also used by park patrons traveling to the sit1 and by boaters using the launch facilities. i Envi;ronnental Impact , By providing recreation opportunities' in the midst of a heavily urbanized area, the !need to travel long distances for such opportunities would be eliminated. In a{ddition, public transportation would be readily available, resulting in a - saving of gasoline. The ' ex anded park would require only a slight increase in energy with ; the addition of .a multi-purpose building and lighting for parking areas and piers. Use 'of low-level , low-intensity lighting would mitigate the added energy costs °,_ and, with utilities already in place or nearby, the energy costs of installa- tion would be minimized. 1 Fuel would be needed for equipment during the construction period. Energy coss associated with construction materials for paving roads, trails and parking lots is estimated to be about 5 billion Btus. Site preparation! and manufacturing and transportation of materials for the multi-purpose building would require 3.6 billion Btus. fl UTILITIE . Electricity - Existing Conditions __ Electrical service to the park is provided by Puget Sound Power and L1ig1 ht Company and is the,only energy source presently utilized there. An underground, 49 1 1 service of 7200 volts has been furnished and provision made for future develop- ment. The total electrical energy used -by the park in..1978 was 176,670 KWH. 1 Environmental Impact j There would be an insignificant increase in electrical energy demand asso- ciated with the expansion of the park. The addition of a multi-purpose build- ing, requiring provisions for cooking, and an increase in the amount of light- , ing would add to the current demand. An active conservation effort, currently • applied by the Renton Parks and Recreation Department, would keep use of electricity to a minimum. ) atural Gas j Natural as is available. from a trunk main alon Lak W 9 e ash'g ington Boulevard, but it is not used as a source of energy for the present park. If a need for heating of buildings becomes a factor in future development, natural gas could be a primary choice for heat, and connection could be made within two; or three • • weeks of notification to the utility. iiommunications Adequate telephone service is provided to the area by Pacific Northwest Bell and adequate capacity is available for additional demands. i II . ater - Existing Conditions The City of Renton has adequate water supply originating from wells (50%), springs (40%), and City of Seattle 'reserves (10%) . The water receives primary treatment with chlorine. A 6-inch waterline at the south end connects the park with a 12-inch main that runs along Lake Washington Boulevard. Another 6-inch stub extends to the northern boundary of the proposed expansion area. 1 iEnvironmental Impact !_ I Park expansion will have an insignificant effect on the demand for water service. A connecting waterline through the park would be necessary to create a pressure loop for adequate fire protection. The line would also be needed for occasional irrigation during times of drought. + , With the addition of a multi-purpose building to the park, there would be a need for a fire hydrant for fire protection. The size and uses of the .building would dictate the size of the service line needed. . • 50 i . Sanitary Sewer Existing Conditions A large METRO gravity sewerline is located along the eastern boundary of the park and an. 8-inch cast' iron connects park facilities to this sewerline. s The City is under contract with the METRO plant in west'Renton for primary and 4 secondary sewage treatment. . .--; The low elevation along the , l akeshore has made the installation of two i l ft sta ions necessary, one at the south end of the park and one at the north end. Environmental Impact Only a minimal increase in demand for sewer service is expected from expansi 1. on . of .the park.' The needs for additional connections and another lift station wo•uld be considered in the final design of park facilities. �- StormDrainage Existing Conditions i - A deeply cut drainage ditch runs through the park. It carries stormwater that ��' originates in the residential/industrial area between Interstate 405 and the Cedar River, plus runoff from the lowlands and hillside area southeast of the • _park. Erosion is a problem in the watercourse due to upstream flooding, but the ,depth of the ditch prevents flood 'problems in the park. . • i `f • Storm detention is required by the City of Renton when any portion of landiis paved, and installation of oil/water separators are required in every catch- • basin. . . Environmental Impact . ' , • A detention pond with the necessary oil/water separators is proposed to be located just outside the southern boundary to improve 'water quality in, the • • drainage ditch flowing through the park. The drainage ditch would be moved ,to , thelother side of the boat launch and a more natural stream bed would ibe designed according to the proposed plan. Given sufficient funds, .the City utility would construct a series of detention • basins to, alleviate upstream flooding. • Solid iWaste . . Solid waste removal is contracted by the City to General Disposal Corporation. The garbage is hauled to the Renton transfer station and subsequently taken ;to landfills in the Maple Valley and the Newcastle areas. i -7 151 1 1 II ' J1EALTH AND SAFETY Existing Conditions The location of the existing park facilities providing green, open space in the midst of an industrial area is a benefit to many people. This is evidenced by the increase in use of Gene Coulon Beach Park during shift turnovers for Boeing and Pacific Car and Foundry. The popularity of the park is such that it is. often overcrowded, creating some potentially unsafe conditions. 'Safety considerations at the park include a full complement of lifeguards to protect the swimming beach area, and a signalized crossing and fenced ,right-of- way along the railroad. The play tower at the west end of the park has been closed at the upper level because misuse presented a hazard to park ,patrons.. The expansion area is presently hazardous due to steep shoreline and lack of supervision. ' Environmental Impact Expansion of the park would improve public health and safety by cleaning up a 1 section of shoreline containing debris such as logs, bottles, chains, and metal , and by eliminating hazards from that shoreline. It would also provide community residents with an additional leisure area for outdoor activity and exercise. Several health and safety features of the proposed park design include pro- tection of the area inside of the outer harbor line by a log boom to ensure quiet waters and to eliminate the conflict between motor boats, water skiers and fishermen; improvements in access and circulation (see TR;ANSPORTA- TION/CIRCULATION section); and concentration of bird feeding stations at the proposed marsh area. c The conflict of traffic and a railroad crossing would be reduced by the provi- sion of improved parking and internal circulation. A new signalized crossing and an additional crossing into the park would mitigate potential traffic hazards. The water quality of the existing drainage ditch would require improvement. Periodic monitoring of water quality would be necessary to assure the health and safety of visitors that may enter the water or take aquatic life' from the ditch. S 52 I AESTH', TICS istin Ex g Conditions The, expansion area is a long (nearly a mile), narrow (50-350 feet) parcel of sho, el1ne set against an undeveloped, wooded hillside. It is primarily a 'flat shelf resting several feet above the lake with fairly steep banks sloping 'iito J thejlake, making access to the lake difficult. The site is sparsely vegetated due) to recent disturbances related to the former industrial use. Litter, discarded lumber and concrete blocks can be found in several locations,, and r unused pilings occur all along ' the shoreline, although the pilings provide foreground reference and interest. Views from the site consist of the south end of Lake Washington with Mercer ' Island to the north. The developed portion of the park, the Puget Sound Power and; Light power plant and the huge Boeing manufacturing buildings may be seen to the south and Mt. Rainier can be seen in the distance. I 1 Environmental Impact I r The, ovIrall appearance of the site would be improved, primarily due to grading andjfi 1 (resulting in a more natural appearing shoreline) and proposed land- scaping. The grading will also result in a more accessible shoreline by redUci g the slopes which lead to the water's edge. A series of small bowls or - shalll o ravines will be: created that will provide a feeling of seclusion'; and separate beach areas. These areas will be separated by mounds and plantings. The mounds will provide more distant views across the lake. On one of these ' areas, an observation tower is proposed to provide still longer views. I ' .Areas of the park will. be linked by a series of walkways that will provide r I I . peaceful , quiet walks to the northern, less developed portion of the park. The fishing piers may also provide places for peaceful viewing of the lake. At' the southern end, visual interest will be created by the more intense activity associated with the boat launch, boat rentals, moorage and picnic facilities. F1 Visual and noise conflicts between the swimming beach and, boat launch would be by the proposed ,berm separating the two areas. - RECREA{TIO,N Existing Conditions Records of recreational use of the existing park indicate that it presently , receives approximately 300,000 visitors annually. The park is a large swim-, _ ming beach and boat launch with associated lawns, picnic shelters, playground 53 _ i I ' and tennis courts in a formally developed setting. The park primarily serves the residents of the City of Renton and surrounding communities. The variety of activities within the park presently leads to conflicts between some user groups. Boaters utilize the parking lot needed for swimmers and others. Teenagers• on the lawns and in parking areas sometimes annoy families using the beach or picnic shelters. Environmental Impact The proposed park expansion is expected to double park patronage within five years. The capacity of the boat launch will be increased by adding additional lanes and associated finger piers. The parking for the boat launch will be greatly expanded and separated from the beach parking. • Several fishing. piers will be added, along with walks, an observation tower, day moorage facilities for boats, additional picnic shelters, a space fjor small boat rentals, and other facilities. Collectively, these facilities will result in significantly greater volume and variety of water-related recrea- tional use. Previous conflicts between user groups will be reduced due to the proposed separation of the types of activity. Experience at other park areas indicates, for example, that teenagers will voluntarily separate themselves from other ifgiven the opportunity. For this reason, much of the teenage use may groups PP Y• gi be expected to be diverted to the northern parking lots of the. expansiljon area, and thereby reduce conflicts with swimming beach and picnickers. The more passive nature of the proposed park expansion is well-directed toward handicapped and senior citizens. Wide, paved pathways .would-follow the shore- line and would be connected to the fishing piers which are also wide enough to allow wheelchair access. The ends of the piers would be covered to be usable throughout the year. ARCHAEOLOGY/HISTORY ' The expansion area of the Gene Coulon Beach Park is located on several feet of previous industrial fill and therefore it appears unlikely that any archae- ological or historical resources would be affected by enlargement of the park. According the Washington State Office of Archaeology and HistoricPreser- vation, there are no known resources within the area of the expansion. 54 I , L_ The proposed plan includes placement of two barges on the beach to suggest a visual tie with the historic, industrial use of the site. Vegetation would be - allowed to grow around the barges and visitor access would be provided. The historical use of the site would be explained to visitors by means of inter- pretive devices. } • • . I ' • � I ' I l I � 55 • i Short-Term Environmental Uses VS. .L ng-Term Productivity (THE RELATIONSHIP BETWEEN,LOCAL SHORT-TERM USES OF MAN'S ENVIRONMENT AND MAINTENANCE AND ENHANCEMENT OF LONG-TERM PRODUCTIVITY) and Irrwe sible or Irretrievable Commitments of Resources Implementation of the, proposal will, for all practical purposes, irreversibly commit the land area in question to the proposed use. The long-term for,e- cl osure of future options will be offset by the short- and long-term public gains o be realized from the provision of needed park and recreation spade. The; land is not uniquely suited to any foreseeable alternative type of use and that proposed will serve the recreation needs of future generations. I 1 Thelarrd is not now utilized for agriculture or mineral production and does not provide unique wildlife 'habitat. '. It is unlikely that these or similar economic or environmental uses would increase in the future if the site were not devel- oped for water-oriented; recreation use. Delaying implementationlof the proposal until some future time would not pro- duce any anticipated environmental benefit in the long term. Delay would significantly increase construction costs and reduce the value of bond funds due, to inflation. Financial, labor, material and energy resources would be irreversibly comm.it- tedito the development in quantities typical for comparable development. Natu- ral ' resources expended would include construction materials and energy 'sup- plies. Material commitments. would include the use of water, wood, steel, gravel ,II glass, plastic,; asphalt and cement. Energy would be expended during constrilct'ion . and for lighting, heating, transportation and .other domestic uses.. Long-term maintenance would require the commitment of funds for services such as sewers, fire protection, and the continued use of water and energy rescurces. , The' public service ' and, facility needs of the new park would be essentially irreverlsible as demands on water supply, solid waste disposal, and 'sewage treatment would be increased requiring long-term maintenance. Certain resour- ces, inpluding non-hydro energy, building materials and land are irretrievable and,mut be accounted for in this and future generations. 1 57 ' ' ' Alternatives to the Proposal "NO-ACTION" • A di ec1sion not to approve the proposed development would leave the site iniits 1 existing state and prohibit recreational use of the land as designated on :the Comprehensive Plan. The major result of no action would be to prevent or .delay all of the environmental impacts discussed in this document from occurring at the expansion site. A '"no-action" .decision would result in prime waterfront property left vacant, with the industrial waste and trash remaining on the expansion site. iThe bluffs along the shoreline would remain in their present state, presenting a safety problem to any trespassers using the site. The existing parking , and traffic con9estion problems at the park would continue on peak days, and likely worsen. Costs to the City of Renton for park maintenance and staff would remain approximately at existing levels (allowing for standard inflation rates) with- out expansion of the park, rather than being increased by the proposal . , Con- struction costs would not be incurred. MORE INTENSIVE DEVELOPMENT A more intense development alternative was submitted to the Department of Parks and Recreation in 1976'; the Lake Washington Beach Park - The Phase II Planning Prl,ogriam and Master Plan was adopted by the Renton City Council in April of 1S77. The Plan recommended approximately 15 acres of fill (as opposed to' the one acre currently proposed) and extensive shoreline modification and struc- t9resl (see DESCRIPTION OF THE PROPOSAL) . • The facilities and structures were also more extensive, including an arnphi- t ieatre, playgrounds, boat rental, water-ski. launch and boat marina fori day moorage and had a potentially greater environmental impact. The construction' and maintenance costs- to the City of Renton would also have been greater., I I ! LES5 I TENSIVE DEVELOPMENT If the amount of fill required for development of the number of facilities and structures were reduced, there could be lower construction and maintenance ! 59 ' I ! I costs to the City than those of the current proposal . Infinite adjustments could be made to the proposed park extension, such as no fill and no overlook tower or multi-purpose building, fill and dredging only at the boat ramps with no stream relocation, fill only to smooth existing angular projections into the lake, or no boat ramp expansion. Any of these less intensive alternatives would have approximately the same overall impacts. The City expenditure for construction and maintenance would be somewhat less if fewer facilities are constructed. Fish movement would not be improved from existing conditions without fill to smooth out the shoreline; however, fish movement might be slightly improved by elimination of the pro- posed fill associated with the boat launch. ALTERNATIVE LOCATION ;There are no comparable areas of undeveloped shoreline along the south end of Lake Washington that would be suitable for park development. Virtually the entire shoreline is intensively developed for residential , commercial , or industrial use. Development away from the lake would not allow the water-oriented views and activities associated with the proposal . Existing park congestion and con- flicts would remain. 1 I 60 Unavoidable Adverse Impacts Geology and Soils Decirease in soil permeability due to buildings, paving and compaction. Reposi- tioning and overcovering of soils. F Water 1 Increase in stormwater 'runoff volume. Temporary, slight turbidity and silta- tion associated with fill. I Vegetation Elilmirlation of some second-growth vegetation and replacement with grass, shrub and tree areas. i Wi lldlife Possible elimination of a few common species resulting from a decrease; in diversity and extent of habitat within the land portion of the undeveloped expansion area. Noise Slight change in noise- patterns due to changes` in internal circulation. Natural Resources Consumption of common building materials for construction of new facilities. Transportation/Circulation Increase in traffic volumes to the park. Public Services - - Significant increase in funding required for maintenance and operation. 1 Energy Consumption of additional quantities of energy for heating and operation of expanded facilities, travel to and from the site, and power boat usage. Utilities Increased consumption of water and electricity requiring internal extensions of' each system. f 61 I i Regerences Beaton, J. L., A. J. Ranzieri, E. C. Shirley and J. B. Skog, Mathematical Approach to Estimating Highway Impact on Air Quality, CA-HWY-MR 6570825(4)- •72-08, State of California - Division of Highways, 1972. Census Bureau, Characteristics of the Population - 1970 Census of Population, Washington, D.C. , 1973. City f Renton Planning Department, Community Development Plan, 1976. City of Renton Planning Department, Final Environmental Impact Statement :for Renton, Washington, 1979. City of Renton Subdivision Ordinance. City of Renton Zoning Ordinance and Code. Environmental Protection Agency, A Manual for the Review of Highway Noise Impact, 55/9-77-356, Washington, D.C. , 1977. Environmental Protection Agency, Compilation of Air Pollutant Emission; Fac- tors, AP-42 (with revisions), Research Triangle Park, N.C. , 1973. Environmental Protection Agency, Information on Levels of Environmental Noise Regtiisite to Protect Public Health and Welfare with an Adequate Margin of Safety, 55019-74-004, Washington, D.C. , 1974. Har, ader, Mebust, Edlund, Thorson, Lake Washington Beach Park, the Phase II Planning Program and, Master Plan, Seattle, Washington, 1976, Adopted April , 1977. Jones & Jones, (City of Renton Department of Parks and Recreation), Evaluation' Of: Gene L. Coulon Beach Park, Phase II Planning Program and Master Plan, Renton, Washington, '1979.. Nautilus Associates, Ltd., Impact Evaluation - Lake Washington Beach. Park Phase II Plan, Sequim, Washington, January, 1979. Norman Associates, A Review of Gene Coulon Memorial Beach Park, Bellevue, (Washington, 1979. Pacific Northwest River Basins Commission, Climatological Handbook - Columbia Basin States, Vancouver, Washington, 1968. Preston, Richard, North American Trees, Iowa State University. Press, Ames, Iowa, 1961. Puget Sound Air Pollution Control Agency, Air Quality Data Summary, Technical Services Division, Seattle, Washington, Published Annually. • Puget Sound Council of Governments, Central Puget Sound Region - Populatilon, and Housing Estimates as of April 1, 1976, Seattle, Washington, 1977. 63 Puget Sound Council of Governments, Comparison of IRDP, METRO 201/208 RIBCO and ' RDPI AAM Population Forecasts, Seattle, Washington, 1977. I ,Rittenhouse -• Zeman and Associates, Inc., Soils -Investigation, Bellevue, Washington, 1979. United States Department of Agriculture - Forest Service, Natural Vegetation of Oregon and Washington, Pacific Northwest Forest and Range Experiment Station, Technical Report PNW-8, Portland, Oregon, 1973. g P Wahl, T. R. and D. R. Paulson, A Guide to Bird Finding .in Washington, ,Whatcom ! ' Museum Press, Bellingham, Washington, 1974. Washington State Department of Ecology, Ambient Air Quality Standards, Olympia, Washington, 1971. 9y., Levels, rashington State Department of Ecology, Maximum Environmental Noise , ' (WAC 173-60), Olympia, Washington, 1975. ashington State Department of Ecology, Motor Vehicle Noise Performance Stan- dards, (WAC 173-62), Olympia, Washington, 1975. ORGANIZATIONS CONSULTED: . City of Renton Fire Department City of Renton Parks & Recreation -Department ' City of-Renton Police Department _ • City of Renton Public Works Department . General Disposal Company , IMuskoxen Committee Pacific Northwest Bell ( Puget Sound Power and Light Company U.S. Army Corps of Engineers U.S. Department of Energy ! Valley General Hospital ; , Washington Natural Gas Company • I • 64 1 • List of Elements of the Environment ELEMENTS OF THE PHYSICAL ENVIRONMENT PAGE Earth Geology 19 Soils . 19 Topography 19 Uniduelphysical features 19 Erosion 21 Accretion/avulsion 19 Air Air quality 23 Odor 1 N/A Climate 23 Water Surface water movement 26 Runoff/absorption 26 Floods 51 Surface water quantity 26 Surface water quality 26 Ground! water movement 26 Ground; water quantity 26 Ground! water quality 26 Public water supplies 50 Flora Numbers or diversity of species 27 ' Unique species 28 Barriers and/or corridors 28 Agricultural crops N/A Fauna Numbers or diversity of species 29 Unique species 29 Barriers and/or corridors 30 Fish or wildlife habitat 29 Noise ' 32 Light and Glare 36 • Land Use 36 Natural ; Resources Rate Of use 36 Nonrenewable resources 35 Risk; of! Explosion or Hazardous Emissions 36 65 ILEMENTS OF THE HUMAN ENVIRONMENT • PAGE opulation 41 lousing 41 ransportation/Circulation Vehicular transportation generated 41 Parking facilities 45 Transportation systems 45 . Movement/circulation of people or goods 41 Waterborne,rail and air traffic 45 ( Traffic hazards 45 '°ubl is Services Fire 46 I . Police 46 Schools 48 Parks or other recreational facilities 48 Maintenance 48 Other governmental services 47 viergy ' Amount required 49 Source/availability 49 Utilities . ( Energy 49 Communications 50 • 'Water 50 ,Sewer 51 Storm water 51 Solid waste 51 H man Health (including mental health) 52 A-sthetics 53 1 R-creation 53 A,,cheological/historical 54 ' • Additional Population Characteristics N/A it 1 I 66 A i Appendix NOISE General Description of Noise • Noise is, any sound which is undesirable because it interferes with speech, and hearing or is otherwise annoying (the term "environmental noise", as used by the 'Environmental Protection Agency, means the intensity, duration and charc- ter'of sound from all sources). Noise is a physical phenomenon created primar- ily. from mechanical vibration. Noise occurs in a predictable fashion where free sound radiation is governed, with minor variance, by an inverse rela tionship (as the distance from the source increases, the sound is reduced) and itsjtransmission is determined by the physical properties of the transmitting medium (usually air). . Man is response to noise is determined by the sound level emanating from the source of noise and the frequency spectrum of the sound. Noise intensity represents the level of sound which is weighted in accordance to the apparent loudness perceived by an average human observer. . This number is expressedlin "A "weighted decibels and is written as dBA. This descriptor is the one genlerally accepted as 'having the best correlation with human judgements' of loudness. Each increase of 10 dBA in the noise level is subjectively judged as an approximate doubling of loudness. Noise intensity covers such a broad range that it is measured logarithmically and noise levels usually represent a statistical average for a given period of time. Since noise is rarely steady or constant for long periods, average noise levels do not readily account for very high noise levels of very short dura- tion. For example, a long-term average of a 60 decibel (dBA) sound level, over a 24-hour period might include peak sound levels of 110 dBA, but such an event might be less than one second in duration. This fluctuating noise can. be described statistically by noise levels exceeded for given percentages of time during a prescribed time period. The commonly used statistical levels are L90, L50, and L10, for which the number in the subscript indicates the percentage of time that the given level is exceeded. The L90 is indicative of background noise in the absence of local noise events. The L50 is the median or "average" sound level exceeded 50 percent of the time. The L10 is usually indicative of maximum noise from recurring events, such as traffic during peak volumes. ! ' I 1 67 . 1 The total noise exposure for a prescribed time period is given by the Leq, or equivalent level , which is the dBA level of a constant. sound having the amount of acoustical energy contained in the time-varying measured noise. The Ldn, or . • day-night sound level ," is the Leq over 24 hours with a 10 dBA weighting applied . to the nighttime (10:00 PM to 7:00 AM) noise. The Ldn environmental noise • descriptor is preferred by the U.S. Environmental Protection Agency. Ldn levels in this report were computed from,the measured noise levels bynormaliz- 1 ing these levels for traffic variations, over a 24-hour period. - The criteria used for evaluation of noise impacts areas follows: Regulations and Guidelines for Environmental Impact Statements The U.S. Environmental Protection Agency Noise Guidelines for Environmental , - I Impact Statements identify levels •which can be used to evaluate noise impacts. These levels are not to be construed as standards. The document states that t "until more definitive guidelines are established for various types) of pro- ;ejects, EPA personnel will be guided by the general considerations" indicated below for residential areas: - II Ldn 55 dBA Levels are generally acceptable; no noise impact is gen- erally associated with these levels. Ldn 55-65 dBA Adverse noise impacts exist; lowest noise level ',possible should be strived for. I Ldn 65-70 dBA. Significant adverse noise, impacts exist; allowable only j in unusual cases where .lower levels are clearly demon- II I strated not to be possible. • Ldn 70 dBA Levels have unacceptable public' health and ' welfare II impacts. , . 'IThe guidelines classify noise increases over the present •ambient as follows: II I •0-5 dBA slight impact II 5-10 dBA significant. impact , over 10 dBA • very serious impact '. The guidelines also specify the information that is needed to evaluate noise (impacts and the abatement measures that should be considered if abatement .is . (required. I I 1 68 The Washington State Department of Ecology (WAC 173-60) has also specified 1 I , regulations relating to maximum environmental noise levels. They have classi- fied'1vaious areas or zones and established maximum permissible noise levels. These "EDNA's" (Environmental Designation for Noise.Abatement) are classified as: a) !esidential area - Class A EDNA b) Commercial areas - Class B EDNA c) Industrial areas - Class C EDNA The maximum permissible noise levels for these zones are shown below. NOISE LIMITATIONS _ f - EDNA OF NOISE SOURCE EDNA OF RECEIVING PROPERTY CLASS A CLASS B CLASS C CLASS A 55 dBA 57 dBA 60 dBA - CLASS B 57 60 65 CLSS1 C 60 65 70 Between the hours of 10:00 PM and 7:00 AM, the noise limitation of the ,above table s all be reduced by 10 dBA for receiving property within Class A EDNA's. These noise levels may be exceeded on the receiving property by 15 dBA for 1.5 mi nues, 10 dBA for. 5 minutes, 5 dBA for 15 minutes for any one hour, d,ay;' or night. The limitations suggested by the State are approximately equivalent to theILdn levels indicated by the EPA in residential areas. Motor vehicle noise is controlled under a different standard (WAC 173-62). I Because the use of motor vehicles would regularly violate the maximum permissible levels in the EDNA's, additional regulations have been established to cover ithis category. The following, standard has been promulgated by the State of Washington to control the noise levels from motor vehicles: "No person shall operate any motor vehicle upon any public highway 'or any combination of such vehicles under any conditions or grade, load, iaccel- eration or deceleration in such a manner as to exceed the following maximum permissible sound levels for the category of vehicle, , as measured lat a distance of 50 feet from the center of the lane of travel within the speed (limits specified, under procedures established by-the State Commission on quipment". ' 69 I . he maximum permissible sound levels referred to are shown in below. Other con- 'ditions on motor vehicle noise are also established, but relate primarily to the mccurence of noise from specific activity. MOTOR VEHICLE NOISE PERFORMANCE STANDARDS EHICLE CATEGORY 35 MPH OR LESS OVER 35 MPH MANUFACTURED AFTER 1975 otor vehicles over 10,000 lbs. 86 dBA 90 dBA 86 dBA 1 BVWR* or GCWR** potorcycles . 80 84 83 1 I11 other motor vehicles 75 80 80 , *GVWR - Gross Vehicle Weight Rating *GCWR - Gross Combination Weight Rating 1, Typical noise levels which can be expected from the types of equipment used in ( construction are listed below: NOISE LEVEL (dBA at 50 feet) Earth-Moving Equipment ' 1 Tractors 70 - 95 I Trucks 1 82 - 94 1 Backhoes 71 - 93 I Graders 80 - 94 Compactors (rollers) 73 - 74 Materials-Handling Equipment I I Concrete Mixers 75 - 88 Concrete Pumps 81 - 84 I 1 Impact Equipment ! Pneumatic Wrenches 82 - 88. I II Jack Hammers (and rock drills) - 1 -81 - 98 Other • 1I Vibrators - 69 - 82 Saws . 72 - 82 II I I I 70 I 1 A I ti W7.7 .; At‘-7,It 7 73' I ' ylk � ate= : A, , ` � , ` mow• • ,., :fin 1 ii". ko . , \ylA• ,•1.\\w_ .. , \ 1 I ' it ► yN o. p� R � Ytw�A ip ��j-, \�.11�� 4 b y� i;� 1a' _ 'd. sin 11-at ��. '�4, eii (M 7 }'�3*r .' :: 7► its'. 'i�iit �>."si � fs _' - t )ft} Mkt rt i+r c: . A\A1n9'►, ,w.. ---,",\ . �•r 1 - - ii 1 w` r4 ',j% i r ,r r :s - [ III Illi SW 14\ lirm II [F n a:21tment • J FINAL ENVIRONMENTAL IMPACT STATEMENT FOR PROPOSED GENE COULON MEMORIAL BEACH PARK EXTENSION prepared by WILSEY & HAM, INC. for the RENTON PARKS AND RECREATION DEPARTMENT RENTON, WASHINGTON In Compliance With: • The State Environmental Policy Act of 1971 Chapter 43.21c, Revised Code of Washington SEPA Guidelines, Effective January 16, 1976 Chapter 197-10, Washington Administrative Code (Revised, 1978) City of Renton Ordinance #3060 DATE OF ISSUE OF DRAFT: December 7, 1979 . DATE OF ISSUE OF FINAL: March 13, 1980 E 4114 COST PER COPY: $5.00 I x #) eft • `ur Introduction Action 'Sponsor: Department of Parks and Recreation City 9f Renton Municipal Building 200 Mill Avenue South Renton, WA 98055 (206) 235-2560 Proposed Action: Construction of an extension to Gene Coulon Memorial Beach Park and modifi- cations to the existing park. Project 'Location: . The park is located on the southeastern shoreline of Lake Washington in Renton', Washington. Lead Agency: City of Renton Responsible Official/Contact Person: John Webley, Director ' . City of Renton Department of Parks and Recreation Municipal •Building 200 Mill Avenue South Renton, 'WA 98055 (206) 235-2560 Authors &;Principal Contributors/Location of Background Data: Environmental Analysis and Document Preparation: Wilsey. &' Ham, Inc. Central Park Building 1980 - 112th Avenue N.E. Bellevue, WA 98004 Soil Investigations: Rittenhouse-Zeman & Associates, Inc. 13837 N.E. 8th Street Bellevue, WA 98005 Aquatic Biology: Nautilus P.O. Box 993 Sequim, WA 98382 Hydraulic Engineering Investigation: Norman Associates . Coastal and Hydraulic Engineers 4605 148th Ave. N.E. Bellevue, ;WA 98005 I Master Plan Development: ' Jones & Jones 105 South Main Street Seattle, WA 98104 Licenses Required: Bond issue passed by citizens, Shoreline Substantial Development Permit, filling permit, State hydraulics permit, U.S. Army Corps of Engineers ' per- mit, harbor area lease, Coast Guard permit, water and sewer hookup permits, building and grading permit. Cost of Copies: $5.00 Date of Issue of Draft: December 7, 1979 Date of Issue of Final : March 13, 1980 11 I . • • Table of Contents ;Page :Introduction . i TableHf Contents . ' - ' iii •Recipients of the Final EIS 1 1 . Summary of Contents of the Draft EIS: 1 The Proposed. Project • � 3 Summary' of Environmental Impacts , . ,7' • . Summ ry of Mitigating Measures . - ; 10 Summ ry of Alternatives 10 Unavoidable Adverse Impacts, - • i11 ' Description of the Proposal. 113 1/ 1 Existing Conditions, Environmental Impacts and Mitigation Elements of -the Physical Environment: . 'Topography. ',19 • ;Geology and Soils i19 Air 23' . Water 26 Vegetation 27, • Wildlife - ' 29' Noise • 32 { • . Natural Resources • 35 ' Light and Glare • 36 • ' Risk of Explosion or Hazardous Emission - 36 Land Use 36 Elements of the Human Environment: Population and Housing 41 Transportation/Circulation 41 ' Public Services ' • 46 1 - Enery • ' - • 49 Utilities • 49 Health and Safety 52 Aesthetics 53 . Recr.eliati on • . . 53 Ar'chaiology/History • 54 The Relationship Between Local Short-term Uses of Man ' s Environment ,I' i . ' and Maintenance and Enhancement of Long-term Productivity V and Irreversible or Irretrievable Commitments of Resources 57. ' Alternatives to the Proposal 591 Unavoidable Adverse Impacts 611 References 63 , List of Elements of the Environment 65 ' • Appendix: Noise • ' • 67 i Letters of Comment to Draft EIS 1 • 71 Response' to Comments • 95 . 1 iii LIST OF FIGURES F�:gure 1: Vicinity Map 14 pgure 2: Site Plan 15 igure 3: Soil Sampling Sites 20 igure _ 4: Noise Measurement Sites 33 gure 5: Generalized Land Use 37 figure 6: Zoning 38 igure 7: Census Tracts 42 'IST OF TABLES able I: Summary of Pollutant Concentrations-Renton Area 25 able II : Existing Noise Levels 32 able III : Predicted Ldn Noise Levels 34 able IV: Population Characteristics and Trends 43 [ able V: Population Growth Projections 44 Table VI: Housing Characteristics 44 II I 1 i iv Recipients of the Final EIS Federl : Coast Guard Coast Guard Auxiliary Department of Agriculture, Soil Conservation- Service Department of Housing & Community Development Environmental Protection Agency Fish & Wildlife Service NOAA - National Marine Fisheries Service U.S. Army Corps of Engineers • State:1 Department of Commerce and Economic Development Department of Ecology Department of Fisheries Department of Game Department of Natural Resources Department of Transportation, State Highway Commission Department of Social and Health Services Governor's Office Office of Archaeology and Historic Preservation Office of Planning and Community Affairs Office of Program Planning and Fiscal Management Parks; and Recreation Commission Regional : Bonneville Power Administration Community Services Administration METRO -- Water Pollution Control METRO H Transit PugetlSound Air Pollution Control Agency Puget Sound Council. of Governments Seattl\e-King County Department of Public Health King Coulnty: County Council : District 6, Bruce Laing District 8, Bob Grieve Department of Budget and Program Planning Parks Division Planning Division, Community Planning City of Renton: Mayor City CoLunci l Fire Department Planning Commission Planning Department Police Department Public Works Department 1 ftilities/Services: i Pacific Northwest Bell Puget Sound Power and Light Renton School District No, 403 Seattle Water Department Washington Natural Gas Company ibraries: Renton Public Library11 Seattle Public Library Newspapers: Daily Journal of Commerce Renton Record Chronicle Seattle Times Seattle Post-Intelligencer Private Organizations and Others: Burlington Northern Greater Renton Chamber of Commerce Griffin Boys Home Northwest Steelhead & Salmon Council of Trout Unlimited Seattle Audubon Society Washington Environmental Council • 2 • . . I i . • ! Summary of Contents of Draft EIS ' THE PROPOSED PROJECT The City of Renton Department Of Parks 'and Recreation proposes to construct ' a °major extension -and modifications to Gene _Coulon . Memorial. Beach Park, located on the south shore of Lake Washington within Renton. ! The, site is a narrow parcel of undeveloped waterfront property that! was created. by fill for the previous industrial use of the site. The fill resulted in angular projections and steep banks into the lake. In 'many ' I IL locations rubble such as concrete and- lumber are exposed and much of the site supports only sparse vegetation due to the glanular, • infertile nature of, the fill . . ! . The goal ' of the development is to serve the recreational needs of Renton • H. ' citizens 'through the development of as natural a waterfront and shoreline parkas possible with. associated improvements and activities not possible in ' • other. .ipark areas. 0 . This goal, will be. accomplished through: • '- Improvements to the existing swimming park~to relieve overcrowding, parking and circulation problems. •. Development of over one mile of Lake Washington shoreline in a mannerl that enhances its natural and environmental potential while providing significant unstructured recreational uses. •, - Expansion and improvement of the water-related activity through the • expansion of boat launches, landings, day moorage, overwater piers and . protected water. • ' Development of necessary service buildings for the purpose of recrea- . . tion and maintenance. . i Construction l of the first phase would begin in• the summer of. 1980 and Would be completed by the end of 1982. The proposed project is further described in the fold-out plan map on the, following page. . . . 3 . 1 I I liN.� SUMMARY-OF ENVIRONMENTAL IMPACTS . '`, Topography, Geology and Soils L: NNThe extension area would be extensively graded to reshape shoreline areas to ',ate a more natural , sloping shoreline. Small areas of fill (totaling I \4 mately one acre) would be utilized to eliminate existing, artifi-. ' ' i ar projections into the lake, and to improve functioning of the C' `d. fill operations could result in turbidity and si�lta- LI ` 94jacent to the site. Several mitigating measures N,,r, line erosion and minimize turbidity and lsil- N l lil �, L �° \',ff from the site due to increased `nay occur due to construction N'•.i,n the existing drainage J ' ' ation of the ditch, ding and by aera- IL '"qwith Public torsh are 1 r J 1 L 1 r . fil L. I! A small area of marsh habitat would be created along the relocated drainage ditch (including nesting islands) and surrounding the proposed barges at the north end of the park. �I Air Quality IJ There would be no deterioration in air quality due to the project. The increased traffic and increased emissions resulting would be offset by reduced federal emissions standards. The result would be an overall improve- •ment of air JS quality conditions. There would be short-term increases in summertime dust levels during construction of the project. Noise There would be temporary increases in noise during construction of the pro- ject. Upon completion, there would be a slight increase in noise levels on the site due to the increased activity. Light and Glare The proposed development would add several sources of light from exterior safety lighting. The lighting would be screened from adjacent residences by } vegetation and distance. Land UseVI The site would be converted from unused land to a use as recreational land. Land use on adjacent properties would not be altered. Natural Resources 1 Normal amounts of non-renewable resources would be consumed by construction of the proposed project. Construction would commit the site to recreational use for the foreseeable future. ^? Risk of Explosion or Hazardous Emission There would be no increased risk of explosion or hazardous emission due to - the proposed development of the expansion area. Population and Housing l The proposed project would not have a significant effect on the population or housing characteristics in the area. �? Transportation/Circulation The project would result in generation of approximately 1,200 to 1,500 addi- -H tional vehicular trips to the site on peak use summer days. Lake Washington Boulevard has sufficient capacity to handle the projected increase without a reduction in the 'level of service. 8 1 Proposed entrance and internal circulation improvements and the addition of 1 a second entrance would improve traffic safety associated with the park. , I ' Public Services There would be a significant increase in recreational services offered by the, Renton Park Department. Additional funds would be required annually for maintenance and operation of the expanded facility. Energy Increased supplies of energy would be required for the proposed construction and continued operation of the facilities. Increased fuel consumption by recreiati oni sts at the site would be offset by reduced fuel consumption in other! areas. Visitors would not be using energy at home, while at the park, and the facilities would be closer to the homes of users than other beach IIparks in the region. Utilities A slight increase in demand for utilities would result in insignificant impacts to utility systems. Health No conditions would be created by the proposed development which would create health hazards to visitors at the site or to surrounding residents. Public safety would be improved by improvements to the traffic system, stronger separation of the swimming beach and boat launch, and by regrading i of the existing steep shorelines to gentler slopes. The expanded park would be of direct benefit to public health providing a new opportunity for active recreation. I Aesthetics Aesthetics of the site would be improved by recontouring of the artificially flat fill surfaces and by extensive planting. Several provisions would be made for public enjoyment of lakeside views. Recreation There would be a significant increase in the types of recreational activities and usejof the site. Existing conflicts between user groups would be reduced by physical separation of activities. Archaeology/History There are no known archaeological or historical resources, and impacts due to the proposed project are unlikely. I 9 SUMMARY OF MITIGATING MEASURES Geology and Soils The use of temporary detention facilities during construction would allow settling of silt before runoff enters the lake. Construction during the dry season and planting immediately after construction will also minimize erosion. Water Silt traps and oil/water separators in all catchbasins, in parking or roadway I areas, would remove silt, petroleum products and some heavy metals from I stormwater runoff. The use of bulkheads or the construction of the leading edge of fill first (filling in behind the leading edge) , and the use of granular fill would minimize the potential for turbidity and siltation of the j lake shoreline. Vegetation ' 1 Planting immediately following regrading would mitigate the loss of vegeta- tion. . Wildlife ! Potential impacts to fish would be mitigated by elimination of angular pro- jections of fill associated with the boat launch preventing potential dis- I ruption of juvenile salmon migration along the shoreline. Limiting con- 1 struction activities (particularly pile-driving) to the summer and early fall would avoid potential impacts to incubating salmon eggs. Air Quality Use of proper operational techniques during construction would minimize the level of dust resulting from construction activities. Improvements to internal circulation would minimize vehicular pollutant emissions by reducing congestion. Transportation/Circulation Traffic congestion and potential, hazards would be reduced by proposed improvements to parking, internal circulation and entrances. . SUMMARY OF ALTERNATIVES . 1 The present proposal is a substantially less intensive alternative than was previously proposed (see PROJECT DESCRIPTION) . . 10 No-Action A decision not to approve the proposed development would leave the site in its existing state and prohibit recreational use of the land as designated by the Comprehensive Plan. The major result of no action would be to prevent or delay all of the environmental impacts discussed in this document from occur- ring at the expansion site. LessIntensive Development If the amount of fill required for development or the number of facilities and structures were reduced, there could be lower construction and mainte- nance costs to the City than the current proposal . Infinite adjustments could be made to the proposed park extension, such as no fill and no overlook tower or multi-purpose building, fill and dredging only at the boat ramps with iIo stream relocation, fill only to smooth existing angular projections into the lake, or no boat ramp expansion. Any of these less intensive alternatives would have approximately the same overall impacts. The City expenditure for construction and maintenance would be somewhat less if fewer facilities are constructed. Fish movement would not be improved from existing conditions without fill to smooth out the shoreline; however, fish movement might be slightly improved by elimination of the proposed fill associated with the boat launch ramp. Alternative Location There are no comparable areas of undeveloped shoreline along the south end of Lake Washington that would be suitable for park development. Virtually the entire shoreline is intensively developed for residential , commercial , or industrial use. Development away from the lake would not allow the water-oriented views and 1/ activities associated with the proposal . Existing park congestion and con- flicts1would continue to become worse. UNAVOIDABLE ADVERSE IMPACTS Geology and Soils Decrease in soil permeability due to buildings, paving and compaction. Repo- 11 sitioning and overcovering of soils. Water Possible increase in stormwater runoff volume. Temporary, slight turbidity and siltation associated with fill . . 11 Vegetation Elimination of sparse second-growth vegetation and replacement with grass, shrub and tree areas. Wildlife Possible elimination of a few common species from the site resulting from a decrease in extent of habitat but offset by increase in diversity resulting from the new marshes. Noise Slight change in noise patterns due to changes in internal circulation. Natural Resources Consumption of common building materials for construction of new facilities. • Transportation/Circulation Increase in traffic volumes to the park. Public Services Significant increase in funding required for maintenance and operation. Energy Consumption of additional quantities of energy for heating and operation of expanded facilities, travel to and from the site, and power boat usage. Utilities Increased consumption of water and electricity requiring internal extensions for each system. 11 • 12 Description of the Proposal NAME OF PROPOSAL AND SPONSOR The' City of Renton Department of Parks and Recreation is proposing to con- struct an extension to Gene Coulon Memorial Beach Park. LOCATIOIN The park is located on the southeastern shoreline of Lake Washington within the city limits of Renton, Washington. The park is adjacent to and would be an extension of the existing Gene Coulon Memorial Beach Park as shown in Figures 1 and 2. 1 OTHER AGENCY FILE NUMBERS None. CONSTRUCTION SCHEDULE It is anticipated that the first construction would be initiated in the summer) of 1980 with completion by the end of 1982. Waterfront work would be complejted during summer and early fall in compliance with Department of Fisheries' requirements to avoid potential impacts to spawning salmon. MAJOR PHYSICAL AND ENGINEERING ASPECTS The proposed plan for the extension area is illustrated in Figure 2. The extension area includes approximately 30 acres in a narrow shoreline strip extending northward a mile from the park (15.3. acres are above water and 14!1 acres are below water) . 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'.' ..' lit\••,, , , , ., ......e. - -..... .4.4,,,i .z..hie.e.,.diRs et A.............., ,. ._ . . . ...4111114014rWrov,- -.0%,--.1%--004,-. - . -.yr- ....• : .:...... . • ..,...... iticaliamiliraimi . ..,..iiir_f r;-':-:-'AP•1,,,,---,`;--=_..., ...1--, Cn 11.11Lii -_,- - ----- ••••••••••••m...................................nvzryxa;...............•••••••••••••••••••••7•••••••••maitsisAlL...." ' LAKE WASHINGTON BOULEVARD g lr- -... . ea 7:elic. \Aft4Z.-n-,41/2/42,sE . 577e.E.Itrl - . g•pe..X/A16 Dti/L17/AJG . . . ,• - . • . . • • -• 0. • 500 1000' . . . I__I-1_111 • - '... . . • • . • .,„,.. ' • AI . - . Ali. .. I,. . i , ... *-1 .. • , SITE PLANk . , . .A. . • ... ...... . , _ • _. II - . „ Alh ____ _... 10...lip-.00.- -10,.. - • i- 0, - - iw. ' " Ion1 •___ - - FIG. -2 .- - , ...„.: . _ . . . . . . • park as possible with associated improvements and activities not possible in other park areas. The major elements include expansion of the existing boat launch ramp, addi- tion of a second vehicular access from Lake Washington Boulevard, internal pedestrian and vehicular circulation, day moorage for boats, picnic shel- rI ters, concession and restroom buildings, fishing piers, a fixed-pier wave- break, and fill , grading, and planting of the site. The entire shoreline will be regraded to eliminate abrupt dropoffs while minimizing offshore fill . The land will be contoured into a series of earth mounds. Two additional shelters and an observation tower will be located on these earth mounds with views of the rowing area and Lake Washington vistas from Mount Rainier to Mercer Island. A fishing pier with shelter would provide all-weather angling opportunities for all ages and for the handi- capped at the north end of the park. Three fishing piers and restrooms are planned, with some piers using existing pilings if future tests prove them to be structurally adequate. Over 1.5 miles of paved walking and jogging trails will be provided along the shore and through wooded glades connecting picnic shelters, fishing piers and other facilities. The boat launch will be improved and enlarged with four renovated ramps provided with side piers to allow tie-up space for boats waiting to be loaded. The ramps would be wide enough to permit simultaneous use by two vehicles during peak hours. Eighty-three drive-through spaces will be pro- vided to minimize the need to back trailers, and an additional twenty-five spaces for overflow parking will be provided. The boat launch facility will be developed so that it could remain open twenty-four hours day, with moorage for a police boat provided along an extension of the existing pier. The "Waterwalk", an interconnected series of piers, allows people to walk well out onto Lake Washington. Three shelters will allow year-round enjoy- ment of the walk for fishing, viewing and picnicking. It would enclose an area of water for rental rowboats, and other related small craft. This area also connects to an adjacent water area along the northern half of the park, protected by a log boom where more room is available for beginning sail- boaters and other quiet water training needs. Access through the boom will be provided at both ends. In keeping with the park purpose of providing essentially passive shore- related recreation, the overall character of the park would be informal and 16 natural-appearing. Heavy use areas near the boat launch and multi-purpose building would be irrigated and carefully maintained. However, as one walks north along the shoreline the landscape would become more natural by degrees with increasing emphasis on lower maintenance materials. Fencing and screen planting will separate the park from the adjacent railroad. A new main- , tenance facility will provide needed equipment, materials storage and a: work area! The proposed plan would provide for separation of boaters and swimmers • through a redesigned entrance road and separate parking areas. A substantial berm would visually separate the swimming beach area from the boat launch area. The separation would be further emphasized by relocation of the existing drainage ditch. The existing drainage ditch would be moved to the southwest side of the boat launh. The water quality within the ditch would be improved by construction of a !settling basin and an oil/water separator above the park. The proposed channel would be designed to appear as a natural stream bed incorporating a marshy area and instream islands and would flow past one of the existing picnic shelters. The use of the northern portions of the park extension area would be more passive. Development would consist primarily of open spaces, walkways, small fishing piers, a picnic shelter, an overlook tower and two small parking areas. Two barges would be beached to recreate a feeling for the historical use of the site which was water-oriented and industrial (see ARCHAEOLOGY/HISTORY section) . Lake fill for the entire project would consist primarily of several small areas) to "round-off" the angular fills that were created by the previous industrial use of the site and to provide a more natural appearing shoreline. Additlional fill is proposed adjacent to the boat launch to improve func- tioning and safety and to provide a physical and visual separation between the existing swimming beach and the boat launch. A total of approximately one acre of surface area would be filled. The entire plan represents a scaling down of the number of facilities ,and the quantity of fill proposed in the original master plan prepared for the extension area in 1976. Fifteen acres of fill were originally proposed for the park. The presently proposed park extension represents a commitment to 17 work with the existing site conditions and limitations rather than exten- sively modifying the site to accommodate all recreation demands as pro- posed in the original master plan. :XISTING LAND USE PLANS AND REGULATIONS A master plan for the park entitled: Lake Washington Beach Park - The Phase II Planning Program and Master Plan was adopted by the City of Renton in April , 1977. The plan recommended approximately 15 acres of fill and elab- orate shoreline modification and structures. The facilities recommended would have been extremely expensive and of questionable feasibility from engineering and environmental standpoints. A recognition of these and other limitations led to the the development of the present proposal . The site is zoned G (General ) and H-I (Heavy Industry) . Both of these categories would allow the proposed park development. The City of Renton Comprehensive Plan designates the site as recreation. use. The Shoreline Management Master Plan for the City of Renton allows recrea- tional use of the site and identifies restrictions and regulations for speci- fic facilities. The proposal is consistent with the City' s Shoreline Manage- ment. Master Program. 18 I , Existing: Conditions, Environmental Impacts and Mitigation :II Elements of the Physical Environment TOPOGRAPHY . Existing Conditions The site is essentially a flat shelf several feet higher than Lake Washington with steep banks. This topography is the result of fill and grading for the previous industrial use of the site.. There are only minor variations in topography throughout the site. ! ; Environmental Impact The proposed plan recommends minor regrading throughout the site. The blanks along the lake would be cut back in several locations to create a more ' gradual , natural and accessible slope to th'e shoreline. The material from the cuts would be placed in .other areas to create mounds, adding variety1and providing views as well as providing more secluded spaces in the cut areas. Appro imately 65,000 cubic yards of material would be repositioned within the site. No need for significant quantities of imported fill is antici pated. Proposed fill within the lake is discussed in the following section. GEOLOGY AND SOILS Existikg Conditions 1 A geology and soils engineering consultant was engaged to evaluate., soil conditions of the site. Onshore test -pits and borings and offshore borings were utilized to identify existing. conditions (see Figure 3) . The flull report of the findings is' available for review at the Renton Parks land Recreation Department. A summary is presented here. 1 The portion of the proposed park expansion, presently above lake level , has . all been developed by previous filling and is nearly level . . The property was previously used as a cargo transf er 'area, and log storage area as suggested by the IInumerous piles driven offshore. The lakeshore itself is characterized by a .lihe of logs and timbers, large concrete blocks, some quarry stones, and considerable miscellaneous debris. The shoreline generally is steep, and appears to be subject to active undercutting by' wave action. Immediately offshore are a series of pile clusters and submerged concrete blocks and metal service ladders. 19 / / . 0S. // 4 I/ ......cr ' ;::� 8"3 ,490/200/47X-%wen of fizz- /// N •7.` t2-.) . M,TRb 8 z T T • �l � _ I� p • 1 7/a5. .00 • ZAK /N D sou La ..et, r ■ 7 �PirleCffTlAV /9PYR.OX101re AREil- dF F/GL 0" 500" 1000' 1 [ . • .} •• . SOIL SAMPLING oildens [ . } i ;1� SITES -FIG. 3 . I. The onshore borings encountered very loose to medium dense, gravelly, sandy fill to depths of 12 to 18 feet. Underlying the fill in the borings are medium dense to dense, saturated, fine to coarse sands with gravel . Boring number 2 had approximately 4 feet of peat beneath the fill , followed by very loose to loose sand and gravel grading to medium dense, silty, fine to medium sand, and gravel at 36 feet. Although massive rubble was not encountered in the borings, exposures along the shoreline indicate that large quantities of wood, concrete, bricks, and other materials may be present. 1 At the offshore boring locations, very loose to soft sand and silts were present to depths of 13 feet. Underlying these soft, saturated soils are medium dense to dense, saturated, fine to medium sands with gravel . The offshore soils are characterized by surficial , very loose to loose, and' soft materials to depths about ten feet below mudline at the borings. Closer to shor , the near-surface muds and soft soils are approximately one to three feet !deep. Groundwater at the onshore boring locations was encountered at approximately 7 feet. The groundwater table is probably at lake level near the shoreline. Some borings indicate rises with increasing distance from the lakefront. In addition, the fill probably has lenses of permeable soil containing perched or trapped water. Also, the silty areas, that appear in the fill , trap water at the ground surface and result in ponding during wet weather. Environmental Impact Onshore clearing and grading, within the areas already filled will expose rubble or debris which should be covered by soil . Clearing and grading will result in minor, temporary increases in erosion potential . Due to the silty nature of the on-site soils, proper compaction will be difficult or impossible when the soils are more than a few percent above their) "optimum moisture" content. Periods of warm, dry weather are the most desirable condition for a successful filling program. If filling is required during periods of wet weather, the fill should consist of clean sand and gravel . Clean sands and gravels are not normally moisture sensitive, and can. usually be compacted under a variety of climatic conditions. Mound rising up to 20 feet above surrounding grade are proposed for two locations in the park. Because of the weak nature of the subsoil , these 21 , fills will undergo settlements of approximately one foot. This would not be a problem in a park. setting. Considering that .the existing onshore fills are of variable density and contain quantities of both organic and inorganic rubble, lightweight frame structures supported by conventional spread or continuous footings may be subject to substantial settlement; this will be caused more by long-term , settlement of the fill than from the imposed loads. Therefore, consideration should be given to the use of driven timber piling for support. Approximately. 21,000 cubic yards of clean, granular fill is proposed along the lakes'hore as shown in Figure 3. In addition, approximately 9,000 'cubic yards of rip-rap is, proposed (much of this will be above water) . Placing thick layers of fill within the lake atop the loose or soft soils can cause localized shear failures, thereby displacing the mud and causing significant turbidity. The volume of soft soil or mud displaced would be least from fills near the shore, and greater from fills at greater depths. A Hydraulics Permit and Department of Fisheries' approval will be required . for any construction activity within the lake. 1 Mitigating Measures Onshore clearing and grading should be completed during the summer months to minimize the potential for erosion and siltation of the lake. Disturbed areas should be seeded immediately after grading is completed to stabilize 1surface soils. Temporary silt traps should be constructed above the shore- line within drainage swales. Fill should be placed according to technical specification identified by the consulting soils engineer to minimize settlement and other potential prob- Ilems. Building foundation design must consider possible soil settlement as identified in the soils report. Depending on final design configurations, several approaches are available which can reduce mud displacement resulting from filling within the lake. One approach would be to build vertical or near vertical bulkheads, then placing fill behind them. This tends to trap the mud, but does increase 1 long-term settlements of the fill . If this approach is utilized, it is ' important to remove the mud immediately behind the bulkhead to reduce "active" lateral earth pressures. Mud displacement can also be reduced by building the leading edge of the fill first, and trapping the mud as if with a bulkhead. 22 In the southern portion of the park where a steep or near vertical bank is planned, a rip-rap bank covered by a walkway would be constructed with provision for daylighting the water below to allow fish passage. To the north, "sliver beaches" and minor shoreline modification have been planned. Water depths of about 6-15 feet are present near areas where existing park grade is some 3-6 feet above lake elevation. In these areas, it would be appropriate to excavate the above-water portion of the park shoreline downward to the lowest practical elevations to minimize the poten- tiallfor erosion and shear failures or mud displacement beneath the water surface. AIR Existing Conditions The Gene Coulon Memorial Beach Park is part of the Puget Sound basin and has a typical northwest Pacific Coast marine climate. Temperatures are mild and precipitation moderate, with the majority of rain occurring. in the winter months. Winds are generally southerly during the winter and northerly during the Summer. Temperatures in the area vary from a monthly average of 40°F (4°C) in January to 65°F (17°C) in July. The annual average temperature is about 50°F (10°C) . Precipitation can vary from 25 to 65 inches (64. to 165 cm) , but averages about 45 inches (114 cm) annually. Snow occurs occasionally during the winter but rarely lasts longer than two or three days. Winds are of moderate speed with the prevailing direction generally south- westerly. It is expected that winds at the park will be out of the south to southwest during the winter months and out of the north to northwest during the summer. Meteorology creating the "worst case" air quality conditions is most likely to occur for several days during the late winter months with overcast skies and light southerly winds. Localized inversions can occur under northerly winds during the late summer and fall months, but usually disperse each afternoon. The air drainage condition associated with stagnant air will flow generally from the hill westerly towards Lake Washington. The expansion site is located within the Puget Sound Air Pollution Control Agency non-attainment areas for carbon monoxide, oxidant and particulate 23 matter secondary standard. The major source of these pollutants is the auto- mobile, with stationary source activity reponsible for particulate matter. It is currently projected that these pollutants will be in compliance with the ambient air quality standards by the 1982 deadline. Table I summarizes the data taken from air monitoring stations in ..the Renton area. As shown on Table I, the particulate levels are within the standards. Carbon monoxide levels are approaching the eight-hour standard -during the "worst case" winter months in downtown Renton. Hydrocarbons (non-methane) are in excess of the standard. Oxides of nitrogen are well within the annual , standard and show the highest average levels during the summer months. Based on the data, it is expected that the conditions in the vicinity of the park are similar to the recorded concentrations at the monitoring sites. Back- ground concentrations of carbon monoxide are expected to be about 3 ppm. There is a small amount of pollutant emissions due to railroad activity on, adjacent : rail lines, although the activity level is quite low. The emissions produced fare negligible when compared to the total emissions from vehicles on Lake ;Washington Boulevard. Environmental Impact Air pollution will be created almost solely from vehicles using the park. Pollutants associated with heating buildings and the railroad are expected to 'be negligible. The major impact will be the increase in carbon monoxide concentrations from ;the additional traffic volumes. For the purpose of estimating air quality ,impacts, it may be assumed that the proposed expansion will generate approxi- • 'mately 1,000 additional vehicle trips daily by 1982. By 1990, an additional 2,200 trips will be added to the current traffic levels independent of any ;expansion. A California Division of Highways line source model was used to jpredict the existing and future concentrations of carbon monoxide at a receptor ;in the park. The increase in traffic will increase the peak hour carbon monoxide concen- tration less than 0.1 mg/m3 by 1980. By 1991, concentrations will be about 20% of the present levels, even with normal increases in the traffic. :The current federal standards for vehicle emissions are becoming more strin- ;gent which will cause a decline in vehicle-related emissions. Based on exist- ling data and implementation of federal law, vehicle emissions are expected to decline about 7% by 1980 and about 85% by 1990. 24 TABLE I SUMMARY OF POLLUTANT CONCENTRATIONS RENTON AREA Particulate Matter (ug/m3) Location 1978 1977 1976 1975 Standard S.E. Djistrict Health Center 36 38 38 27 60 Renton Municipal Building 37 51 50 37 60 r - i Carbon Monoxide Hydro- Nitrogen PPm carbons Dioxide Location Period 1-Hour 8-Hour 6-9 AM Study Max. Max. Max. Period Average Airport Way & Logan Ave. January-March 1977 9.0 8.0 - - Puget Power Yard June-July 1977 3.2 2.0 0.70 0.02 March-April 1977 4.2 3.3 1.37 - October-November 1976 8.1 6.6 - 0.01 June-July 1976 2.2 1.3 - 0.04 Standards: Carbon Monoxide 1-Hour Standard - 35 ppm Carbon Monoxide 8-Hour Standard -' 9 ppm Hydrocarbons 6-9 AM, 3-Hour Average-0.24 ppm Nitrogen Dioxide Annual Average-0.05 ppm • There! may be a short-term increase in dust levels due to summertime construc- tion. However, this would be confined to the area under construction and would cease; upon completion. Watering procedures and good operational techniques should keep dust levels to a minimum. Mitigating Measures Dust resulting from construction work can be minimized through the use of good • operational techniques such as watering of exposed areas. Puget Sound Air Pollution Control Agency regulations require that precautions be taken to minimize the entrainment of dust in the ambient air. 25 VA,ATER Existing Conditions Surface water of the site consists of roughly one-mile of Lake Washington shoreline and a portion of a City of Renton drainage ditch that flows i nto the lake. A few small , intermittent streams enter culverts east of the expansion area and flow under the fill to the lake. ( Water quality within the lake is generally high. The lake supports a substan- tial fish population and is used intensively for recreation. The quality of the drainage ditch water is low. Oil , discolored water, high temperatures, concentrations of certain heavy metals and occasional fish kills have been observed in the ditch. These factors are apparently the results of runoff from the adjoining industrial area, streets and extensive parking areas. 1 1 Stormwater within the park either infiltrates the soil and enters the ground- water table or runs off directly into the lake. The groundwater table is generally near the lake level but is higher at increasing distances from the lake. Environmental Impact Two proposed construction activities could result in significant temporary. ( turbidity and siltation of the waters of Lake Washington. These are the minor fill and the proposed grading of the expansion area. Fill could displace soft mud deposits on the lake bottom resulting in turbidity flows. Exposure of soils on land areas can result in erosion and subsequent siltation and tur- bidity due to the proximity of the lake. Measures to control each of those ( potential impacts are discussed in the GEOLOGY AND SOILS section. Since the project would utilize san-itary sewers, there would be no point source impact to water quality other than from site runoff. Impacts to site runoff water quality could result from pollutants washed from paved surfaces and potential nutrients washed from planted areas. Runoff from paved surfaces contains silts, oil products, nutrients and heavy metals. Nutrients from planted areas are a result of fertilizing lawns and gardens. The drainage ditch at the south end of the expansion area will be relocated and modified to create a marsh environment. This will have a minimal impact on water quality within the ditch or lake. Due to the. existing low water quality, 26 any collection of aquatic life from the ditch for human consumption should be discouraged until water quality is improved. A settling basin and oil trap has been suggested for the ditch on adjacent property but it is not part of the present proposal . The settling basin would remove silt and many heavy metals. The oil trap would be necessary to prevent oil slicks which may remain in the proposed marsh for longer periods than in the present ditch due to increased surface area and slower moving water. Any construction activity within the drainage ditch will require a Hydraulics Permit and Department of Fisheries approval . Mitigating Measures Silt traps and oil/water separators for the on-site storm sewer system would be incorporated within all catchbasins in parking lots or roadways. These devices will remove oil products, silt and many heavy metal compounds before the stormwater enters the lake. The effectiveness of such devices is entirely dependent on routine maintenance. The responsibility for maintenance would be placed with the Parks Department. Frequent sweeping of the streets and parking areas could also significantly reduce impacts to runoff quality by reducing silt, litter and some of the heavy metals and nutrients. Use of fertilizers, herbicides, and pesticides on the site should be carefully controlled to minimize the excess nutrients or poisons washing into the lake. The settling basin and oil/water separators suggested for the drainage ditch would improve the appearance of water within the proposed marsh area. Estab- lishment of tall vegetation along the banks of the ditch would shade the water and might result in reduced water temperatures which would be favorable to fish life. Frequent sweeping of city streets and the expansive industrial parking I lots where paved would also improve the quality of water within the drainage ditch. The quality of water within the ditch should be monitored periodically due to potential human recreational use and consumption of aquatic life. VEGETATIION Existing Conditions The site was previously cleared and graded for industrial use, but not paved. Thus, the entire site is in the early stages of vegetation succession. The 27 vegetation is primarily alder, cottonwood, scotch broom, blackberry and grasses. The site comprises a..variety of open grass areas, shrub areas, and small stands of young trees. Limited surveys of the nearshore lake bottom indicate that aquatic plants are restricted to the shallower portions of the project area, especially in the silty southernmost portion, where algal assemblages were the only plants found. Macrophytic plants (Elodea sp. ) appear to be limited to the less silty northern portions of the site, undoubtedly due to effects of increased water turbidity and associated limitation of light, depressing photosynthetic activ- ity. No marsh habitat is found within the study area, although some minimal marsh vegetation is found on the island adjacent to the original park. No rare or endangered species are known to exist on the site. Environmental Impact Vegetation from most of the site would be eliminated due to the extensive grading proposed, and it would be replaced by new plantings. The plantings would primarily be, formal lawns and trees in the southern portion of the extension area with more natural open grassy areas and groves of sh'rubs' and trees to the north. Maintenance of open areas in grass will require periodic Mowing.. to suppress weed, shrub and tree growth. . Many of the desirable trees adjacent to the present boat launch ramp would be . , retained in a grove adjacent to the proposed multi-purpose building. This ' location includes several of the largest trees in the extension arela. Limited aquatic vegetation will be eliminated in fill areas,. Silt from fill areas may cloud the water, reducing sunlight penetration and thereby reducing ' plant growth. After construction activity ceases, the aquatic plants will grow back. A new marsh area is proposed within the relocated drainage ditch west of the - oat launch area and would probably support a productive stand of cattails along the banks and on the small nesting islands proposed for the channel . A IJnarsh area will also be created surrounding the barges in the northern portion of the park. Mosquitoes are not expected to be a problem since the native ' mosquitoes do not feed during normal park-use hours. ' 28 . , . . .. : ' .. . . . . , . • . . . . ,. .. . . . ,. . . . . . , - , • . , . . .-. . . . . . . . f • . • . . • . . • . . .. . . . . , . • • . . . Mitigating. Measures • , . • " . . . Mitigating measures that are incorporated• inthe proposal include the follow- ', • ihg. - - , • . , • • . . . , . . .. . . • • . . . . . . . . . . , , .. 1. - Retention of existing shrubs and trees in areas where grading is. not proposed. ' 2. Replanting of all areas upon completiOn of construction.. • ' . . . , - . . • 3. Construction in phases so'that entire site is not• stripped .of vegeta- • ) . : • , • - tionatone time. . . LI. Creation of.A new marsh habitat. 5. . Creation of several areas of shrubs and trees that will be alloW,eolto . , grow essentially in a natural condition. These would be lOcated generally in the northern portion of the park. I ' (-- • WILDLIFE ' r • , . ' . . •. • EXis'6ng Conditions . . . , - I • . • , . ,! 1 . i ' •1 Information related to Wildlife use of the site wasobtained: from sveral • . . ' saures. A .thorough study of aquatic biology in the., vicinity of ,the park was conducted in 1975 and 1976 for the Puget Sound Power and Light Company., A sUbcnsultant (Nautilus AssOciation) Was hired by Jones & 'jones in 1979' to ,•-• ' , further -investigate aquAticand.terrestrial biology • ofthe-park .expansion areal The resUliS Of these investigations wee supplemented with •site. vLisits -• . .• dOring breparatior.rof this Draft EIS. . • . . . . .. , . • • Terrestrial .habitat of the site consists of grassy 'areas, shrubby areas and tree groves all in early stages of succession following industrial use, Of the site When compared to more natural shorelines,. the edge effect along the , . lake shoreline, is of limited value because of prior disturbances ancrindus- , - 1 . • tria use. Only two loCations. have dense shrubs along the lakeshorel, the . 1 ' , - area immediately 'east of' the boat launch ramp and 'a - small area near the . , .. ....- .. • proposed location for the beached barges. , Terr!strial wildlife populations_ arecorrespondingly limited and comparable , . • . to most undeveloped suburban land. . , I. , • . . . . , . • • : The lake provides habitat for: waterfowl ancifish populations.. Waterfowl include migratory And resident- wild bird populations, and resident domestic i 1-.---. breeds. . . . , . . . . . ! , • • . Fish species •are Abundant and diverse in the waters ofthe park. OvertWenty • , 1 . . , . species offish ..were captured in or adjacent to the park during the Puget ,. : . . . . . .. . , . . • ' ' H ., . , . 29 . . . . . • . ' t Sound Power and Light studies, including sockeye salmon, rainbow trout and steelhead, cutthroat trout and coho salmon. Cedar River sockeye salmon are a species which were introduced to Lake Washington in 1935 and are perhaps the most important species, in the lake relative to commercial fisheries management. The behavior of sockeye fry (juveniles just after emergence from the egg) and. the wide range in time of emergence from the egg lead to 'extensive, short-term use of the littoral shoreline during the period from January through May, even though 90% of spawning occurs in the Cedar River. A limited beach spawning occurs, along the eastern shore, which also contributes fry to the littoral habitat. After emergence, fry remain in the littoral zone for a short .peri od. before moving • offshore for a 12-15 month period of feeding on planktonic crustacea prior to smoltification and migration to salt water. • Environmental Impact Roughly one-half of the terrestrial wildlife habitat would be disturbed or destroyed during construction. Much of this would be re-created as the proposed plantings become established. Although diversity and total popula- tions of 'terrestrial habitats , would be reduced due to the more uniform vegetation types, overall populations and diversity would be increased due to the, newly created marsh habitat along the drainage ditch and adjacent to the proposed barges in the extension area. Filling operations on top of the heavily silted bottom will not only cover important littoral zones with resulting local destabilization of the fish community, but may also have more widespread effects due to siltation of adjoining areas. Siltation may depress plant activity (photosynthesis) due to light reduction effects of turbidity, both for single-celled plants floating in the water (phytoplankton) and for plants attached to the bottom and other substrates. Reduced plant production could lead to overgrazing effects. Visual planktonic feeders such 'as juvenile sockeye and longfin smelt will experience impaired feeding due to decreased light intensities. Large amounts of suspended materials lead to gill damage in small fish such as juvenile sockeye. ' If the mitigating measures identified in the SOILS and WATER section of this document are followed, siltation and its effects should be slight and tempor- ary. Although some shallow-water shoreline habitat, would be buried, the 30 0 gradual slopes and granular fill proposed. should minimize impacts to sockeye . salmon. Pile-driving in. the lake could damage salmon eggs within shoreline gravels. . Angular projections such as those proposed adjacent to the boat launch con- fuse juvenile- salmon migrating ..along the shoreline .and may force them into area! of increased predation.. In contrast, the curved areas of fill proposed in several locations, north of the boat launch may improve conditions by ' eliminating existing angular projections of fill and the resulting steep ,� . shoreIlines. The. proposed. piers and . breakwaters will 'be . designed to .permit passge of fish along the shoreline. • The proposed marsh along the existing drainage ditch. and surrounding the barg s will result .in additional habitat; however, intense human activity and lack of surrounding habitat immediately adjacent to the small marsh area' may limit wildlife use of the marsh 'to common, relatively tolerant species. In. wi ter, when human activity is reduced, this area may become .attractive ,to winte ing waterfowl , particularly those species that may graze on the adja- cent awns.,. Impacts` of the proposed .constructioh to waterfowl habitat should ' be,• re' ati ve'ly minor. , Mitig ting Measures . A llow'ng the vegetation ,within the expansion area to grow essentially wild . with. a minimum of maintenance (mowing, weeding, pruning) would improve the ' quali ..y. of terrestrial wildlife habitat. Planting trees and shrubs along the shorelines of the 'lake and drainage ditch would reduce.shallow water temper - ' tures and improve conditions for aquatic life. The inclusion . of foo,d- produl ing species would further improve' the value of the proposed plantings for wildlife. , Any mgasuresto minimize water quality impacts would also benefit wildlife. Elimination of the ,proposed fill areas projecting into the lake. adjaceni to the boat launch ramp would improve mi grati on. movemen.t of juvenile sockeye 1 ' salmor along the shoreline. ' To ,meet Department ' of ' Fisheries regulations, all pile-driving should be • ' conducted between the months of July and October to avoid potential impact to incubating salmon eggs. ' • � 31 ' l , NOISE c Existing Conditions V To determine the existing noise levels on the site, measurements were taken at two locations at three different times on the site (see Figure 4) . A summary of the noise readings .is shown in Table II . TABLE II EXISTING NOISE LEVELS (dBA) Site 1 Site 2 Time Park Entrance Northern Portion Midday: (2-3 PM) L10 53 56 L50 50 49 L90 48 40 Peak Hour: (5-6 PM) L10 62 73 ' L50 58 60 • L90 52 55 Night: (12-1 AM) L10 54 " 47 L50 51 37 L90 47 35 Noise measurements were taken on Tuesday, August 28, 1979, with a Bruel and K Iaer 2209 Type I Sound Level Meter with a 4165 microphone and wind screen a tached, calibrated with a 4230 calibrator. Weather was overcast and tempera- t re was about 70°F cooling to 50°F at night. Winds were northerly in the d ytime at, 7-10 MPH and were calm during the night readings. T e principal sources of noise at Site 1 included cars and light plane flyovers f'om Renton Municipal Airport during the day. A lawnmower in the park was also a dible. Trains pass the park occasionally through the day but none were m asured during the monitoring period. Night readings were due to sounds from occasional cars, and I-405 noise was also detectable in the background. 32 ..Y"... - • .01 1 - uiK O BDNLe ,eo • • 0- 500- 1000' r 1 ..,,.. ,- ,- . . .,.- NOISE MEASUREMENT iT .�0r :� ,£ SITES 4 T i r X1'�' a,' =111:Am ' ��', t t ,t "' " z+; _ A T. ,•= - , I'w . FIG. 4 Site 2 noises .included -traffic on Lake Washington Boulevard, light plane fly- . overt and a police siren., .Night noises were mostly.'due to cars! -on Lake . • Washington Boulevard,_ and I-405 traffic was audible in the background. Based on the readings. shown' in Table .II, the existing Ldn noise. levels are approximately as. fo'llows: Site 1 - 58. dBA Site 2 - 53. dBA ' Based on EPA guidelines, adverse' noise' impacts exist at Site 1 atLthe park . . entrance. Levels at Site 2 are in the "generally acceptable" category. The . noise' levels:at .all.-sites are within the. state standards (see APPENDIX.for a ' general description. of noise) . Environmental Impact . . ' • . - The proposal includes. expansion of the park • f acilities and a resultant . increase in traffic volumes. Therefore, the two principal noise impacts created by the expansion will, be . the long-term increase in noise levels created 'by additional traffic in the vicinity of the site •and a short-term increase in noise during construction of the new f aci.liti,es. Table III shows , . the predicted Ldn with and without park expansion. • - TABLE III , PREDICTED Ldn NOISE LEVELS . � (24-hour average) , . . Nilise . . Existing Predicted 'Level . Predicted Level • . Mea'1.urement Level Without Expansion With Expansion Si� e ' (1979) " . (1980). Change (1980) • Change r . . 1 ' 58 58 0 58 ' . . 0 . 2 ' . 53 53 • 0 53 ' 0 As shown in Table III , there will be no increase in' noise levels at Site 2. The daytime noise levels will increase adjacent to Site 1 by about 1 dBA, but when averaged over 24 hours there will be no discernable increase. ' By 1990,, the additional traffic will create no increase in noise level's at Site 1 without the park expansion.. The Ldn is predicted.to increase. 1 dBA by 1990 with the expansion-, and levels 'at Site 2 will remain unchanged. , 34 According to EPA criteria, , there will be only a slight increase in noise y. ::i evel_s due to the proposed expansion. Three dBA is the required increase bef ore the human ear can detect a significant change in noise levels. Since the increase in traffic is confined principally to daytime hours on weekends and in summertime, the late night noise levels will remain essentially unchanged from existing levels. The area will remain in compliance with stage standards. There will also be a short-term increase in daytime noise levels due to consitruction activity.. (For information on construction noise :levels, refer to APPENDIX. ) Noise from construction activities will generally range from 69 to 95 dBA, with some higher peaks if impact equipment is used. . Con- struction noises around the site will cease upon completion of the project. Mitigating Measures Longterm mitigating measures are difficult to implement because the princi- pal noise increase is due to traffic generated by the site expansion. The noise levels predicted are based on the traffic generation predicted by, the City of Renton. Noise abatement procedures during construction could include: - The use and maintenance of properly operating mufflers and quieting devices; - The use of quietest available machinery and equipment; The use of electric equipment in preference to gas, diesel or pneumatic machinery; - Locating construction equipment as far from nearby noise sensitive pro- p;erties as. possible; - Shutting off idling equipment; - Limitation of construction hours to coincide with the normal workday period (e.g. 8:00 AM to 6:00 PM) . NATURAL RESOURCES The vacant land designated for the park expansion has no significant value as agricultural land or as a source. of mineral or timber resources. The site would be converted to public use for the foreseeable future. Much of the dominant natural vegetation of the site would be retained and the more desirable species would be encouraged., 35 • Normal amounts of non-renewable resources would be consumed duing. the con- struction of parking lots, trails, and buildings in the expanded park. Materials used would include concrete, lumber, metals, asphalt and fossil fuels. IGHT AND GLARE Existing Conditions There are presently no sources of light and glare within the expansion area with the exception of sunlight and reflection from the lake. Environmental Impact Limited exterior lighting will be provided within the southern half of the expansion area. Lighting will be of low intensity, as necessary for safety, hand will generally be separated from adjacent _ properties by distance and ( screened by vegetation. Thus, there will be no significant impact from the proposed expansion due to light or glare. ',ISK OF EXPLOSION OR HAZARDOUS EMISSION There are no unusual risks of explosion ! or hazardous emission connected to the expansion of the Gene Coulon Beach.Park except a potential temporary risk ( during construction. Safety requirements and precautions would be observed during the time of construction, and would largely compensate for any poten- tial construction hazards. Paint and fuel will be stored in the park main- tenance building but implementation of standard safety requirements will avoid potential hazards. AND USE Existing Conditions The City of Renton Comprehensive Land Use Plan (1976 Revision) designates recreational use for the area of the existing ,Gene: Coulon Beach Park and adjoining expansion property. A designation of heavy industry is, given to the area south of the park, high density multi-family is assigned to the area to the east, and at the northern end, single-family residential use is specified. Existing land use conforms to the Plan designations (see Figure 5) . The land between the Burlington Northern railroad right-of-way and the Interstate 405 corridor is primarily vacant, with a golf driving range, a mobile home park, 36 iSith, - V' 'I' iiW'11111111111n yhv�LE rAMu. _ �� `, a i ::::' AESIDENTIAL ` 'vim RE �, INIIIIIIOIIIIIIW , • ;, i !,--, . }// fJD \% r''•s'NIIIIIIILIIIIIIIIIIII _ . : E , ; \,--/_ -_,_i_ • " \ % UNDQI J / D $ i tea- I\-- . \ R.C5ID�rlA2_ V l )1\14\..\\* I lINI i w,Q „ .--. GDGF DRJ vl/t/C� ieANG0 . 1 ,/# , s• a zit S,M1Gl E Ffl�J/LN © ;i 0.% z 4 ifi R i NTIRL z' ,Ot.4 ,. .,' 4.....„.„ •T . :. , 14 \): fi$4\\‘. *4 - ] 1-._. ' . ' .f ; ,.ditt. ; • zi • _. _,________ . • # \\I' \ . //4 - 40A. %, ,. (/:' Ll--C / A A i E• ---12-.---.7z . 0 1 I ` - iNGLg MMI/al/Gil �• ��� , ,2EiL6 TT7A- ,____-, 1 i I R V.gq 7Z'R4&e_ PSI/LED'D - 51oPPLEToN — . ,.//ei g,teele__ /./ /7 - , : ra / ,, ..., --110- - I - , ., o ; .,-- ./ LI6ot-r- :21\ , A i iNA9ar,Qy� > \../z- ab • • t- b•'•, • GENERALIZED ,, ICfl LAND USE FIG. 5 . J 37 . . . • -• . , . • . . ,. . .1' , \`—',__, . ' ,:i.• 'la .ViEli cm ' ' ' .,G,;ii - mamma' -, 1111J ' - -es., : • \ .,f,..:-.11110.1111:11111111111111111111in i holm • WA :: , ,... crIIIIIIII 11 # • !-4%.&-\ ,•---S Rt 2 __\ '' "1 saliiiiiiiiiiTIMM1K. G 72 r, • \ N 1 . 1 ;,I • .L, .-, - -. • • . , \ , , . NV\ .,.,:e:.„-...i.fa•mwri., ,,,...1:„..,....17:: LiE„,,,. 'I .. , • . — i -• • \ \ /.- '' z • • z Bo 1 • • :"-------1 _ ! 276 17---i-••-• Pei ,•-: ', P'•rt"6'0 e' . i" ' • ' 277 '---- 2.97 • f - , • • _____,_ '-,--j - v - ... 'i' '- 27‘ 1,-—r—r-t-,-,.-,—.? ' \ -r ...?;:N; ' \' • "".... al 'l I. ' 17' h1:-------=- I-1-74 - 's. " . . I •. • as I . •.' ' i a• ,1: • 0.• 1, 7. , 1 -,51 -1 • . 46 - Is I A.c 1 t.-.= • \ \ *6 . V _ . .240 I • c - •> • . • , ' li 1 1 • 1E • _ _ : /\_, . . • , • \-\ i ' • 4‘:" :1• :- M . \, \:\ • , .7I?X 7 !i .c: j---„ - •• . , \\ . .. 333 • — - • : . . . . 1 'i: I'"C' ': - .1 ii i•: 41 . '- 283 - 2--3 2O2___ 'ill I • -: 'li :In It>. • 4.1 • 335. ‘-'.- .. -11 T . , - ! 5[T. Gig . - • I I 325 01 1 00 er,: . • 1. , — ',4 p4_ I ' . - •. .- . .***i . . , \ 4 V ' 342 *1543 : -.,: • Ili . G . i- ' ‘... . ..., . Residential Lj • - . • \ 4‘ ssa . . . . . •'!11,111 i.GS-1 0\\ „,:•• , . • li - _R7-1 ••_11- ,- . • . . . . . ' . Of4\\ ' i'it' rR-2----.71 Residential - family gXP,94)6/4/U - / vr " ,• . \., As k," / -,..k , ::•Si -2 _i. I ,‘;. - ,R-3 -1,_ReTiswi den ti al' - • ' v4i\ \i . b— ..1, :R-1=Li Multi-family . . ),-///rF . . ..t. :T' ]—Trai 1 er Park - • - • ! 1.i le\II) 2. 1' 1B-1 .0—BuS i nes s Use . - \T., '-‘::, ' \"; '.---- —— - • • “;-• 'FI-1. 1—Heavy Industry ' . *4.\\"1\ - \, 1-0-7T=--- D-2 ulp 1 i c Use • • . -• * 0 ' ' \ - \ gx i 6r/NG ilier,c ----7 -410- . .-, ) ... 'Ix -71 .1-- • ., .s1 ,:t7,F,,- ‘,1,.7z-:-----; -* — \,• 1 , . it. • 'Tei ' ‘..•• I : : '• ___= _ -- • . A- 4. . 289 ' 288 ''en "' - ' ' ' • / Ar •'4k I i ' n". / 4' .10'' '1 • • 'n\ 7 -2 , — — ._ . . , .7 t - • #‘ j •" 4,4 1 . 1,, . . . - ,., ,-= z--, -' - ,-- . • / I -,- / . ;:.I '7, .-t? --'• •r. .i— . /& 9: I VA 1 \-' .\ • \\k . .. . . / //' ..- I . . ' \ -*A'• V . // ' • 1 , ‘.11\ I . - • \, ( / . . / /_, , . \ /1-.' . " • 4 . , \ z, V i ,Q, •H-1 . . • • v• . 7',,\ Y /.. . ' \ • / /' k ' . , 1 ..i • . 1 • . • \ . : a. 9WIllctens. • . ) . • . I • . 1 • ill Mit lor-,di'IP Ma •[ ZONING : FIG. -. 6 . r . , . ,• • , . . 1 . . . j . and he . Griffin 'Home . (foster home for boys) located at the. northern ,end of the rea. ' Single-family residences adjoin the site to the north and extend ' . along the eastern side of Interstate .405. . , , The western. edge of the expansion area is coincident with the shore of1Lake • Washington and was formerly used as an area for log shipping- and storage. The Shuffleton Power Plant, a•steam-generating plant operated by .Puget Sound Power and Light Company, i's. located at the southwest corner of the park; and the large plant buildings and parking lots of the Boeing• Company !and Pacific Car nd. Foundry occupy the area south of the- park. ' o Zning . . SiLLngle-family residential (GS-1 and G) is the zoning designation for, the • . ex!,isting, park,' and . heavy industry' (H-1) is specified along the lakeshore I extending northward as shown in Figure.6. Heavy industry zoning also covers • the ntire- area south of the park. , ! 1 A 'sm 11 area of B-1, business use, is applied to a trailer storage business l o'catled east of the park entrance and this is adjoined by .a mu-1 ti-;family ' . resi ential (-R-4) area. The remainder of the 'land around the east and north • sides of the park is zoned. single-family residential (G-6000) except for a trailer park (T) and a public use (P-1) zone. I j . . En:vironmental ' Impact . • • . The expansion. of recreation use in the area north of the existing park would • .be` cohsi stent w'i th the land use policy of the City of Renton. Devel opment of 1 park facilities and access would alter vacant land and convert it to passive recr ational use. Land use patterns in the adjacent areas would. not be .expected to change; and no, significant impact to land use is expected due to the expansion. , Recreational development would be permitted under the present zoning desig- . nati I •n (G and H-1) and therefore., no zoning change would 'be necessary. ' 1 , t . . . i j i 39 . i i . ■ Elements of. the Human Environment • , , - • - POPULATION AND HOUSING - ' . 'Existing Conditions • • • : . The -Gene Coulon'.Beach Park is located in Census Tract 253, shown in Figur,'e '7, • ".which is • coincident with PSCOG' s AAM District 3820.' . For purposes of !com- .:parison,-the..area"was analyzed .(see.Tabl a IV) to assess the characteristics and • • growth .trends of :the population .closest to the site, ..as well as the City •of __ Renton. and King County•as a, whole. Table V shows the ,projected area•growth for 'the ,surrounding AAM Districts as compared to the County, and Table VI shows the housing characteristics. The housing information is collected from the ,1970 Census tables and is therefore ten years out-of-date , (especially note dollar figures)'. . . • . Environmental Impact , The proposed park expansion is not expected to have a •significant effect on existing population or housing characteristics or trends. Visitors to thejpark . mostly live in 'southern King County, .and as these areas grow in. population', the . ' ' park visitation figures are expected to increase proportionately. Thepark expansion itself, however', , 'is not expected to draw a significant, increase'.of 'new.people orhousing to the Renton- area. ' . • TRANSPORTATION/CIRCULATION . • Existing Conditions - . , The,:City of Renton Traffic Engineering Division has reviewed the. proposed� park expans-on and has provided the following i nformati on related to traffic.j Access to t'he. park is .provided. by both Lake Washington Boulevard with vehicular . access at the south end, .and by water (Lake Washington) for pleasure ' boat users. Most boat users arrive at the park: by means of the street. system, so • this section will concentrate on automobile . traffic on adjacent streets and • within the park. ' The, capacity of Lake Washington Boulevard at Level of Service "C" is .1,200 vehicles per hour. The 1979 Average Daily Traffic . (ADT) is 6,000. ' Peak; hour . traffic demand on. Lake Washington Boulevard occurs on weekdays between 6:30 and • 8:00 AM and.' between 3:30 and 5:00 PM. The projected 1990 ADT without the ' ' proposed park expansion is 8,200. 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I' ' , '!� TABLE IV POPULATION CHARACTERISTICS AND TRENDS AAM Districts: 4000 3850 3860 3820 3840 3830 Renton King County Census Tracts: 247 250 251 252 254 255 253 256 257 258 1970 Population 6,416 5,230 4,156 4,968 4,840 3,036' 5,917 3,558 3,488 12,300 25,258 1,159,230 1978 Population* 6,824 5,462 4,628 4,692 4,401 2,754 6,056 3,567 4,871 11,906 29,300 1,186,903 AGE 0-9: 22.3% 23.1% 25.1% 23.5% 18.5% 23.7% 13.4 27.3% 23.0% 26.9% 19.6% 17.6% 10-19: 21.5 25.0 20.9 20.0 16.3 20.6 15.8 16.5 16.2 19.8 17.2 18.7 20-34: 20.1 16.8 25.4 23.7 25.4 23.8 22.0 28.6 30.5 27.1 25.1 22.9 w 35-64: 33.6 33.0 25.6 27.6 30.2 29.3 35.6 24.7 27.2 24.4 30.5 32.0 65+ : 2.5 2.1 3.0 5.2 9.6 2.6 13.2 2.9 3.1 1.8 7.6 8.8 SEX % Female: 49.7% 49.6% . 48.9% 50.6% 53.5% 49.7% 51.0% 49.4% 50.8% 49.8% 51.0% 51.1% RACE . % Black: 1.1% 1.0% 1.6% 0.5% 0.5% 1.5% - 2.0% 0.6% 0.4% 0.8% 3.5% MEDIAN INCOME ($) : 14,757 16,589 11,356 11,376 10,248 11,337 10,282 11,741 12,212 12,066 11,120 11,886 Source: 1970 Census *PSCOG Estimate TABLE V - -_ POPULAI-IONTGROWTH-PROJECTIONS- AAM Districts: 3820 3830 3840 3850 3860 4000 King Co.*** 1970 Population* 5,971 11,770 7,026 4,156 12,844 11,472 1,136,064 1978 Estimate** 6,056 11,906 8,438 4,628 11,847 12,286 1,186,903 1980 Forecast 5,912 11,931 8,518 5,458 11,626 13,186 1,170,803 1990 Forecast 6,394 12,866 11,310 7,275 12,760 14,079 1,349,136 2000 Forecast 6,629 13,751 14,177 9,561 13,981 16,193 1,529,186 * 1970 Census data. - ** PSCOG estimate (T-208 run; February, 1977) . *** Represents urbanized portion of King County only. TABLE VI 4, -P HOUSING CHARACTERISTICS AAM Districts: 4000 3850 3860 3820 3840 3830 Renton King County Census Tracts: 247 250 251 252 254 255 253 256 257 258 All Housing " Units* - 1,942 1,390 .1,179 1,524 1,823 ' 930 2,656 1,064 1,719 3,628 9,655 423,783 Percent Owner Occupied - 71.7% 86.6% 78.2% 62.7% 48.7% 75.3% 49.4% 83.7% 36.5% 71.3% 52.0% 58.5% Median Value ($) 29,033 31,700 21,186 20,945 17,500 18,545 17,524 22,169 23,976 21,389 19,600 21,700 Median Rent ($) 165 154 120 99 117 120 100 ' 126 118. 144 109 114 Persons per Dwelling Unit** 2.91 3.21 2.84 2.81 2.28 2.82 1.91. 2.88 2.28 3.05 - 2.42 * 1970 Census data ** 1978 PSCOG estimate City of Renton ' s Six-Year Street. Capital Improvement Program for widening to four lanes with curbs and gutters, sidewalks, lighting and channelization. The , estimated construction period for the improvements is. 1983-1985 although funds for the construction have not presently been identified. The improvements will increase the capacity of the boulevard to 1,500 vehicles per hour at Level of Service "C". Traffic' generated by the park and using Lake Washington Boulevard fluctuates seasonally, daily and hourly. The heaviest traffic occurs on sunny, summer weekends between 11:00 AM and 12:00 Noon. The summer peak day traffic averages 2,500 viehicle trips with 10% of these occurring between 11:00 AM and Noon. Weekday peak traffic generation is also heaviest in summer with 2,000 ADT, but the peak demands occur between 12:00 Noon and 1:00 PM, and between 5:30 and 6 :30 Pg. Thus, the peak park traffic generation does not generally coincide with peak commuter traffic on Lake Washington Boulevard. Congestion within the park occurs during peak hours and conflicts arise due to insufficient parking for boat trailers. Congestion at the boat ramp occurs primarily due to inefficient use of the ramp because of a lack offinger piers or other facilities for handling boats in the water. The park is presently served by METRO Bus Route 240. A bicycle route circling Lake Washington and serving the park has been proposed and partially imple- 1 mented,� but not within the vicinity of the park. Except for an existing pedestr; an walkway from the Renton Highlands beneath Interstate 405 to the entrance, the park is not easily accessible to pedestrians due to a lack of pedestrian routes and heavy automobile traffic in the area. Environmental Impact The expansion of the Gene Coulon Beach Park is expected to increase peak day trafficgeneration_ by approximately 1,200 to 1,500 vehicle trips per day. The type of traffic and peak hour demand should remain unchanged after the park expansion. The increased traffic generation is well within the capacity of Lake Washington Boulevard without a reduction in level of service. Access and traffic safety for the park will be improved by the expansion due ,to 1) provision of a secondary entrance, 2) improved internal circulation includ- ing separation of parking for different park uses, and 3) provision of expanded turning lanes on Lake Washington Boulevard. 45 additional finger piers and separation of lanes for the boat launch should 4reatly improve the circulation and efficiency of the boat launch. Additional ;oat launch parking will be provided. The proposed improvements are shown in he Master Plan (Figure 2) . :icycle and pedestrian access and circulation will be improved due to the rovision of a trail system through the park with possible linkage to future rails outside the park. PU:LIC SERVICES F4e the Renton Fire Department answers all fire and emergency aid calls for Gene ' oulon Beach Park; average response time to the park is 22 minutes. The main lire station, located at 211 Mill Avenue South, will supply a pumper, ladder nd aid-car unit on any fire call , and back-up service, provided by the High- ands. Station, will supply a pumper and an aid-car. Problems commonly dealt ith include car fires, boat fires, fires set by vandals, and occasionally a mall for an injury or accident. • "he expansion of the park and increase in use would require a slight increase 1n fire protection services. The design of the expansion area would conform to raequirements of the Renton Fire Department and Uniform Fire Code. These requirements include: - an emergency access road to the northern end of the expansion area with an adequate turnaround; - fire hydrants at 500-foot intervals along access road; - fire hydrants within 150 feet of all piers; - fire hoses of 12 inches at the moorage pier; - portable fire extinguishers in the multi-purpose building. Poliice • istin• Conditions Adequate police protection is currently provided to the park by the Renton Police Department. City-wide, the Department is reported to be understaffed. The City of Renton ratio of police officers per thousand population is 1.67, slightly below the national average (2.3) and consequently, a request for three dditional officers has been submitted in the current-City budget. 46 Patrol ',calls to the park deal most commonly with problems of drinking, rowdyism and noise. These problems are greatest in the early summer, as longer days and warm weather promote the heaviest use of park facilities. Problems of parking enf orcelment and traffic control require continous police attention during holiday weekends and Seafair week. Environmental Impact Although some pressures of overcrowding should be alleviated, expansion of the park an'd an increase in use could require an increase in patrolling by police and park personnel . With the requested additional personnel , there should be no problems of adequate police protection. The proposed observation tower may present opportunities for _vandalism, as has occurred previously with the existing tower in the children's play area. , The City of Renton pays for King County patrol boat service along the shore- line, and since the response time of the County patrol is slow, the City would like to, purchase its own fire and police patrol boat. Moorage space would be provided at the park. In all cases, funding for increased services is a policy issue that must be considered by the City Council . Mitigating Measures The expansion area could provide fora separation of user groups: family groups utilizing the existing beach area and teenagers using the northern expansion area. This type of voluntary separation happens at several other beach parks in the Seattle area and could reduce any potential conflicts between the two groups (see RECREATION) . Hospitals Valley General Hospital in Hospital District No. 1 serves the areas of Renton and Kent. The hospital is operating above capacity at the present time and as a consequence, an $18 million expansion program is proposed to begin next year. One of the major areas of expansion is to be for emergency services, where demand is projected to approximately double in the next five years. There would be no significant impacts to hospitals associated with the expan- sion of Gene Coulon Beach Park and any calls for emergency treatment could be readily met.. 47 • S.h00ls he park expansion would not significantly affect current or future 'enrollment in the Renton public schools. ncreased learning opportunities for study of vegetation and wildlife habitat ' ould become available with the expansion of the park. Ma'ntenance the Renton Parks and Recreation Department is responsible for a maintenance rogram now in effect for the 22-acre developed portion of the Gene Coulon each Park. With the exception of the lifeguard staff, the current total ludget for the park is $120,000 for all utilities, supplies and services. i Ilhile the park expansion is expected to double the site capacity, maintenance osts would only increase by about 65%. An estimated total budget for the xpanded park is $200,000, mostly as a result of the addition of two full-time taff members and. a part-time summer helper and as a result of increased building maintenance for the multi-purpose building. The current level of care would be continued, but design requirements for the new section call for a substantial return to native vegetative cover which • equires little or no long-term maintenance. In the northern portion, fnitially, irrigation would be used to help establish the native landscape and ndesirable species would be weeded out, but this level of care would end after fie first year. Pa ks and Recreation provision of a large swimming beach and a boat launch ramp make the existing eene Coulon Beach Park a popular and heavily used recreation site for south ding County residents. More than half of the park ' s patrons come from areas other than Renton, according to user surveys. The site provides good, level slublic access to the Lake Washington shoreline, which is an area largely ",oreclosed to the public. I ether park and recreation sites in the vicinity include Mothers Park, Liberty 'ark, Cedar River Park and Trail system, Windsor Hills Park, and North High- lands Park. Boat launch ramp are available at the mouth of the Cedar River, at q lantic City Park and Seward Park in south Seattle, and at Newport Shores in B l l evue. 48 The addition of four boat launch ramps would relieve some of the demand on the existing launch facility, and would provide additional access for boaters 'from the metropolitan areas south and east of Lake Washington (see RECREATION) . Expansion is expected to double the capacity of the site and thereby alleviate recreation demands on other surrounding parks. ENERGY Existing Conditions i Energy consumption at the park is limited to electrical use for lighting and irrigation equipment and fuel used for park maintenance vehicles. Park use of electricity was 204,330 KWH in 1977• and 176,670 KWH in 1978, reflecting the conservation efforts of the Department of Parks and Recreation. Energy in the form of gasoline is also used by park patrons traveling to the site and by boaters using the launch facilities. Environmental Impact By providing recreation opportunities in the midst of a heavily urbanized area, the need to travel long distances for such opportunities would be eliminated. In addition, public transportation would be readily available, resulting in a saving jof gasoline. • The expanded park would require only a slight increase in energy with the addition of a multi-purpose building and lighting for parking areas and piers. Use of low-level , low-intensity lighting would mitigate the added energy costs and, with utilities already in place or nearby, the energy costs of installa- tion would be minimized. Fuel would be needed for equipment during the construction period. Energy costs associated with construction materials for paving roads, trails and parking lots is estimated to be about 5 billion Btus. Site preparation and manufacturing and transportation of materials for the multi-purpose building would require 3.6 billion Btus. II • UTILITIES Electricity Existing Conditions Electrical service to the park is provided by Puget Sound Power and Light Company and is the only energy source presently utilized there. An underground 49 iervice of 7200 volts has been furnished and provision made for future develop- pent. The total electrical energy used by the park in..19.78 was 176,670 KWH. :nvironmental Im•act Ihere would be an insignificant increase in electrical energy demand asso- i'iated with the expansion of the park. The addition of a multi-purpose build- ing, requiring provisions .for cooking, and an increase in the amount of light- , ing would add to the current demand. An active conservation effort, currently .plied by the Renton Parks and Recreation Department, would keep use of =lectricity to a minimum. Nat ral Gas Ntural gas is available from a trunk main along Lake Washington Boulevard, but ill Is not used as .a source of energy for the present park; If a need for hating of buildings becomes a factor in future development, natural gas could bl a primary choice for- heat, and connection could be made within two or three wleks of notification to the utility. Co lunica'tions i Alequate telephone service is provided to the area by' Pacific Northwest Bell a d adequate capacity is available for additional demands. Wat:r Elstin• Conditions i. T !e City of Renton has adequate water supply originating from wells (50%) , s•rings (40%) , and City of Seattle reserves (10%) . The water receives, primary t eatment with chlorine. A 6-inch waterline at the south end connects the park wi' h a 12-inch main that runs along Lake Washington Boulevard. Another 6-inch s lib extends to the northern boundary of the proposed expansion area., E ironmental Im•act r '' se' expansion will have an insignificant effect on the demand for water se vice. A connecting waterline through the park would be necessary to create a ressure loop for adequate fire protection. The line would also be needed fo occasional_ irrigation during times of drought. I Wi ,h the addition of a multi-purpose building to, the park, there would be a ned for a fire hydrant for fire protection. The size and uses of the building would dictate the size of the service line needed. 50 Sanitary Sewer Existing Conditions A large METRO gravity sewerline is located along the eastern boundary of the park and an 8-inch cast iron pipe connects park facilities to this sewerline. The City is under contract with the METRO plant in west Renton for primary and secondary sewage treatment. The low elevation alongthe 1 s r ake hoe has made the installation of two lift stations necessary, one at the south end of the park and one at the north end. Environmental Impact Only a minimal increase in demand for sewer service is expected from expansion of the park. The needs for additional connections and another lift station 11 would be considered in the final design of park facilities. Storm Drainage 9 Existing Conditions A deeply ,cut drainage ditch runs through the park. It carries stormwater that originates in the residential/industrial area between Interstate 405 and the Cedar River, plus runoff from the lowlands and hillside area southeast of the park. Erosion is a problem in the watercourse due to upstream flooding, but the depth of the ditch prevents flood problems in the park. Storm detention is required by the City of Renton when any portion of land is paved, and installation of oil/water separators are required in every catch- basin. Environmental Impact A detention pond with the necessary oil/water separators is proposed to be located just outside the southern boundary to improve water quality in the drainage ditch flowing through the park. The drainage ditch would be moved to the other side of the boat launch and a more natural stream bed would be designed according to the proposed plan. • Given sufficient funds, the City utility would construct a series of detention basins: to alleviate upstream flooding. Solid Waste Solid waste removal is contracted by the City to General Disposal Corporation. The gaibage is hauled to the Renton transfer station and subsequently taken to landfills in the Maple Valley and the Newcastle areas. 51 4LTH AND SAFETY , 1 _______ .. 1 ,. Existing Conditions u, the location of the existing park facilities providing green, open space in the lidst of an industrial area is a benefit to many people. This is evidenced by he increase in use of Gene Coulon Beach Park during shift turnovers for Boeing nd Pacific Car and Foundry. The popularity of the park is such that it is 11 often overcrowded, creating some potentially unsafe conditions. ',af ety considerations at the park include a full complement of lifeguards to protect the swimming beach area, and a signalized crossing and fenced right-of- ay along the railroad. The play tower at the west end of the park has been •posed at the upper level because misuse presented a hazard to park patrons. he expansion area is presently hazardous due to steep shoreline and lack of 11 supervision. Environmental Impact pansion of the park would improve public health and safety by cleaning up a section of shoreline containing debris such as logs, bottles, chains, and 4tai , and by eliminating hazards from that shoreline. It would also provide community residents with an additional leisure area for outdoor activity and e ercise. S;veral health and safety features of -the proposed park design include pro- t ction of the area inside of the outer harbor line by a log boom to ensure giiet waters and to eliminate the conflict between motorboats, water skiers ald fishermen; improvements in access and circulation (see TRANSPORTA- T��ON/CIRCULATION section) ; and concentration of bird feeding stations at the . p I,oposed marsh area. Tre conflict of traffic and a railroad crossingwould be reduced bythe i- prov Sion of improved parking and internal circulation. A new signalized crossing aId an additional crossing into the park would mitigate potential traffic hazards. The water quality of the existing drainage ditch would require improvement. P riodic monitoring of water quality would be necessary to assure the health a d safety of visitors that may enter the water or take aquatic life from the - d Itch. 52 11 AESTHETICS Existing Conditions The expansion area is a long (nearly a mile) , narrow (50-350 feet) parcel of , shorelilne set against an undeveloped, wooded hillside. It is primarily a flat shelf jesting several feet above the lake with fairly steep banks sloping into the lake, making access to the lake difficult. The site is sparsely vegetated due to recent disturbances related to the former industrial use. Litter, discarded lumber and concrete blocks can be found in several locations, and unused pilings occur all along the shoreline, although the pilings provide foreground reference and interest. 1 Views from the site consist of the south end of Lake Washington with Mercer Island to the north. The developed portion of the park, the Puget Sound Power and Light power plant and the huge Boeing manufacturing buildings may be seen to the south and Mt. Rainier can be seen in the distance. Environmental Impact 11 The overall appearance of the site would be improved, primarily due to grading and fill (resulting in a more natural appearing and shoreline) proposed land- scaping. scaping. The grading will also result in a more accessible shoreline by 11 reducing the slopes which lead to the water's edge. A series of small bowls or shallow' ravines will be created that will provide a feeling of seclusion and separate beach areas. These -areas will be separated by mounds and plantings. The mounds will provide more distant views across the lake. On one of these areas, An observation tower is proposed to provide still longer views. Areas of the park will be linked by a series of walkways that will provide peaceful , quiet walks to the northern, less developed portion of the park. The fishing piers may also provide places for peaceful viewing of the lake. At the southern end, visual interest will be created by the more intense activity associatted with the boat launch, boat rentals, moorage and picnic facilities. Visual and noise conflicts between the swimming beach and boat launch would be reduced by the proposed berm separating the two areas. RECREATION Existing Conditions Records of recreational use of the existing park indicate that it presently receives approximately 300,000 visitors annually. The park is a large swim- ming beach and boat launch with associated lawns, picnic shelters, playground 53 • 5 d tennis courts in a formally developed setting. The park primarily serves . e residents of the City of Renton and surrounding communities. e variety of activities within the park presently leads to conflict's between sme user groups. Bo'aters utilize the parking lot needed for swimmers and - , ohers. Teenagers on the lawns and in parking areas sometimes annoylfamil'ies "x u ing the beach or picnic shelters. E, vironmental Im•act, ' . Tie proposed park expansion is expected to double park patronage within five y=ars. The capacity of the boat launch will be increased by adding additional lines and associated finger piers. The parking for the boat launch' will be g1eatly expanded and separated from the beach parking. Several fishing piers will be added, along with walks, an observation tower, dy moorage facilities 11for boats, additional picnic shelters, a space for small boat rentals, and other facilities. Collectively, these facilities will rl'sult in significantly greater volume and variety of water-related recrea- t onal use. Previous conflicts between user groups will be reduced due to the proposed separation of the typesof activity. Experience at other park areas indicates, for example, that teenagers will voluntarily separate themselves from other groups if given the opportunity. For this reason, much of the teenage use may be expected to be diverted to the northern parking lots of the 'expansion area, and thereby reduce conflicts with swimming beach and picnickers. Th more passive natures of the proposed park expansion is 'well-directed toward h ' dicapped and senior citizens. Wide, paved pathways would follow the shore-' 1i a and would be connected to the fishing piers which are also wide enough to al ow wheelchair access]. The ends of the piers would be covered to be usable th; oughout the year. ARCHEOLOGY/HISTORY ' Th expansion area of the Gene Coulon Beach Park is located on several feet of pr-vious industrial fill and therefore it appears unlikely that any archae- ological or historical resources would be affected by enlargement of the park. Acelording t;o the Washington State Office of Archaeology and Historic Preser- vation, there are no known resources within the area of the expansion. ' 54 The proposed plan includes placement of two barges on the beach to suggest a visual tie with the historic, industrial use of the site. Vegetation would be allowed to grow around the barges and visitor access would be provided. The historical use of the site would be explained to visitors by means of inter- pretive devices. 1/ • 11 it 55 • i ti�` Short-Term Environmental Uses vs.. LoJJng-Term Productivity (THE RELATIONSHIP' BETWEEN LOCAL SHORT-TERM USES OF MAN'S . EN.VIRONMENT AND , MAINTENANCE AND ENHANCEMENT OF.LONG-TERM PRODUCTIVITY) . ' and I - . ' Irreversible Or Irretrievable Commitments of Resources . Implementation of the proposal will , for all practical purposes, irreversibly 1 commit the land area in .question to the proposed. use. The - long-term, fore closure of future options will ' be offset, by the short- and long-term • publ i c gains to be realized from the provision of needed park and recreation space. 1 The land is not uniquely suited to any foreseeable alternative type of use and that:proposed will serve .the recreation' needs of future generations. •The land is not now ,uti l i zed for agriculture or mineral production and does not 1 . provide unique wildlife habitat. It is unlikely that these or' similar economic -= . or environmental .uses would .increase in the, future if the site were not devel- oped. for water-oriented recreation use. ' Delaying -implementation of the proposal until some future time. would notipro- - duce any anticipated environmental benefit in the long term. Delay would - . • significantly increase :construction costs ' and reduce the ' value of- bond funds ' . due to inflation. ' ' ' ' ' II Financial , labor, material and energy resources would be irreversibly commit- 11 ted to the development in quantities typical for comparable.develdpment. , Natu- ' ra_1 resources expended would include construction materials and energy ' sup • plies. Material commitments would include the use of water, . wood, steel , gravel , glass, plastic, asphalt and cement. Energy would be expended during construction. and for lighting, heating, transportation and• other domestic uses.- Longterm maintenance would require the commitment of funds for services such' as sewers, fire protection, and the. continued . use of water and energy • . resources. ' 1 . The public service ' and facility needs of the new park would • be essentially irreversible as demands on water 'supply, solid waste disposal , and sewage treatment would be increased requiring long-term maintenance.. Certain resour ces including non-hydro energy, building materials and land are irretrievable and must be accounted for in this and future generations. • 57 1 1 Alternatives'to the Proposal i ' "NO-ACTION" , 1 ' ' - A decision not to. approve the proposed development would leave the site in its _ existing state and prohibit recreational use of the land as designated on the Comprehensive Plan. The major result of no action would be to prevent ordelay . all lof the environmental impacts discussed in this• document from occurring at - the expansion site. A "no-action" decision would result in prime waterfront property left vacant, with the industrial waste and trash remaining on the expansion site. I . The bluffs along the shoreline would remain in their present state, presenting a ' safety problem to any trespassers. using' the site. The- existing parking and traffic congestion problems 'at the park would continue on peak days, and1-lkely ' worsen. - 1 .. . Costs to the City of Renton for park maintenance and staff would remai n approximately at existing levels (allowing for standard inflation rates) with- ( .. out expansion- of the park, rather, than being ,increased by the proposal . ; Con- struction costs would not be incurred. , MORE INTENSIVE DEVELOPMENT ' A more intense development alternative .was submitted to the Department of Parks an&Recreation in 1976; the Lake Washington Beach Park - The Phase II Plahn,inq --- . Program and Master Plan was adopted by the Renton City Council in April of . 1977. The Plan. recommended approximately 15 acres of fill (as opposed to the one acre currently., proposed) and extensive shoreline modification and struc- tures. (see DESCRIPTION OF THE PROPOSAL) . • • The facilities and structures .were al so• more extensive, _including an amphi- • theatre, playgrounds, boat rental , water-ski launch and boat marina 'for day moorage and had a potentially greater environmental impact. The constru1ct,ion . and maintenance costs to the 'City of Renton would also have been greater. LESS INTENSIVE DEVELOPMENT • If the amount of fill required for development of the number of facilities and structures.. were reduced, there could be lower construction and maintenance 1 •• 59 . osts to the City than those of the current proposal . Infinite adjustments :.ould be made to the proposed park extension, such as no fill and no overlook lower or multi-purpose building, fill and dredging only at the boat ramps with o stream relocation, fill only to smooth existing angular projection into the lake, or no boat ramp expansion. ! 'ny of these less intensive alternatives would have approximately' the same Iverall impacts. The City expenditure for construction and maintenance would le somewhat less if fewer facilities are constructed. Fish movement would not me improved from existing conditions without fill to smooth out the shoreline; owever, fish movement might be slightly improved by elimination o( the pro- 'dosed fill associated with the boat launch. AL 1ERNATIVE LOCATION There are no comparable areas of undeveloped shoreline along the south end of i Lake Washington that would be suitable for park development. Virtually the ntire shoreline is intensively developed for residential , commercial , or industrial use. Development away from the lake would not allow the water-oriented views and .ctivities associated with the proposal . Existing park congestion and con- licts would remain. • f., 60 Unavoidable Adverse Impacts Geology and Soils Decrease in soil• permeability due to buildings, paving and compaction. Re osi- tioning and overcovering of soils. Water Increase in stormwater runoff volume. Temporary, slight turbidity and s lta- tion associated with fill . Vegetation Elimination of some second-growth vegetation and replacement with grass, shrub and tree areas. Wildlife Possible elimination of a few common species resulting from a decrease in diversity and extent of habitat within •the land portion of the undeveloped expansion area. Noise Slight change in noise patterns due to changes in internal circulation. 11 Natural Resources Consumption of common building materials for construction of new facilit es. Transportation/Circulation Increase in traffic volumes to the park. Public Services Significant increase in funding required for maintenance and operation. Energy Consumption of additional quantities of energy for heating and operation of expanded facilities, travel to and from the site, and power boat usage. Utilities Increased consumption of water and electricity requiring internal extensions of each system. 61 • • • 4 I Refer nces r Beaton, • J. L. ,' A. J. Ranzieri , E. C. Shirley and J. B. .Skog, Mathematical . Approach to Estimating -Highway Impact on Air Quality, CA-HWY-MR 6570825(4)- 72-08, State ,of California - Division 'of Highways, 1972. Census Bureau, Characteristics of the Population '- 1970 Census of Population, • Washington, ..D.C. ,. 1973. City of Renton Planning Department, Community Development Plan, 1976. Renton' Planning Department, Final '.Environmental Impact' Statement for Renton, Washington, 1979. . ' City ofl Renton Subdivision Ordinance. { City of RentonrZoning Ordinance and Code. Environmental Protection Agency, ' A' Manual .for the' Review of Highway Noise . Impact, 55/9-77-356, Washington, D.C. , 1977. . • Environmental Protection Agency, Compilation of Air Pollutant' EmissioniFac- tors, AP-42 ;(with revisions) , Research Triangle Park, N:C. , 1973. Environmental Protection Agency,' Inf ormation on Levels. of Environmental 'No ise - -Requisite to Protect Public Health _and .Welf ar.e with an Adequate Margin . of • Saf et!y', 55019-74-004., Washington, D.C. , 1974.: ' Hara'der, Mebust, Edlund,_ Thorson, Lake 'Washington Beach Park, t.he_ Ph'ase : II Planning Program and Master Plan, Seattle, Washington, 1976, Adopted ,Apri.l , • 1977. Jones & Jones, (City of Renton Department of Parks and Recreation), Evaluation of: Gene L. Coulon Beach Park, Phase II Planning Program and Master Plan, Renton, Washington, 1979. Nautilus Associates, Ltd. , Impac.t ' Evaluation '- ' Lake Washington Beach Park Phase II Plan, Sequim, Washington, January, 1979. ' Norman Associates, A Review of Gene Coulon Memorial B'each . Park, Bellevue, .Washington,- 1979. Pacific Northwe.st •River Basins Commission, Climatological Handbook - Columbia Basin States, Vancouver, Washington, 1968. Preston, Richard, North American Trees, Iowa State University Press., Ames, Iowa, -1961. . • ' Puget Sound Air Pollution Control Agency, Air Quality Data Summary, Technical - Services Division, Seattle, Washington, Published Annually. Puget Spund Council of Governments, Central Puget Sound Region - Population and Housing Estimates as of April 1, 1976, Seattle,- Washington, 1977. 63 - . r °uget Sound Council of Governments, Comparison of IRDP, METRO 201/208;RIBCO and RDPI AAM. Population Forecasts, Seattle, Washington, 1977. °iittenhouse - Zeman and Associates, Inc. , Soils Investigation, Bellevue, Washington, 1979. 1 nited States Department of Agriculture - Forest Service, Natural Vegetation of Oregon and Washington, Pacific Northwest Forest and Range Experiment Station, Technical Report PNW-8, Portland, Oregon, 1973. ahl , T. R. and D. R. Paulson, A Guide to Bird Finding in Washington, Whatcom Museum Press, Bellingham, Washington, 1974. W shington State Department of Ecology, Ambient Air Quality Standards, Olympia, / Washington, 1971. W.shington State Department of Ecology, Maximum Environmental Noise Levels, il (WAC 173-60) , Olympia, Washington, 1975. 1 Washington State Department of Ecology, Motor Vehicle Noise Performance Stan- dards, (WAC 173-62) , Olympia, Washington, 1975. • I O'GANIZATIONS CONSULTED: ;City of Renton Fire Departmentii City of Renton Parks & Recreation Department11 City of Renton Police Department City of Renton Public Works Department General Disposal Company uskoxen Committee 'acific Northwest Bell 'uget Sound Power and Light Company .S. Army Corps of Engineers 1i .S. Department of Energy ' alley General Hospital ashington Natural Gas Company • • • 64 List of Elements of the Environment ELEMENTS OF THE PHYSICAL ENVIRONMENT PAGE , Earth Geology 19 Soils 19 Topography 19 Unique 'physical features 19 Erosion 21 Accretion/avulsion 19 Air Air quality 23 Odor N/A Climate 23 Water Surface' water movement 26 Runoff/absorption 26 Floods 51 Surface water quantity 26 Surfacer water quality 26 Ground water movement 26 1 Ground water quantity 26 Ground 'water quality 26 Public water supplies 50 Flora Numbers or diversity of species 27 Unique species 28 Barriers and/or corridors 28 Agricultural crops N/A Fauna Numbers or diversity of species 29 Unique species 29 Barriers and/or corridors 30 Fish or wildlife habitat 29 Noise 32 Light and Glare 36 Land Use 36 Natural Resources Rate of use 36 Nonrenewable resources 35 Risk of Explosion or Hazardous Emissions 36 65 • EL MENTS OF THE HUMAN ENVIRONMENT PAGE Po ,ulation 41 Ho5i'n 41 Tr nsportation/Circulation lehicular transportation generated 41 `arking facilities 45 transportation systems 45 Movement/circulation of people or goods 41 laterborne,rail and air traffic • 45 raffic hazards 45 Pu.lic Services • Ore • 46 lice 46 • school s 48 darks or other recreational facilities 48 aintenance 48 et • her governmental services 47 Energy • Pnount required 49 111 ource/availability 49 • Uti�l ities Energy 49 0ppmmunications 50 wter ' 50 Sewer 51 S1torm water 51 Solid waste 51 Hum6n Health • (including mental health) 52 . Aesthetics 53 • Recreation 53 Arc ; eolo•ical/historical 54 • Addtional Posulation Characteristics • N/A • • • • 66 Appendix NOISE _ I ' General Description of Noise Noise iIs any sound which is undesirable because it interferes with speech and hearing or is otherwise annoying (the term "environmental noise", as used by the Environmental Protection Agency, means the intensity, duration and charac- ter of sound from all sources) . Noise is a physical phenomenon created primar- ily from mechanical vibration. Noise occurs in a predictable fashion where free sound radiation is governed, with minor variance, by an inverse rela- tionship (as the distance from the source increases, the sound is reduced) and its transmission is determined by the physical properties of the transmitting medium ;(usually air). Man ' s response to noise is determined by the sound level emanating from the sourceiof noise and the frequency spectrum of the sound. Noise intensity represents the level of sound which is weighted in accordance to the apparent loudness perceived by an average human observer. This number is expressed in "A"-weiighted decibels and is written as dBA. This descriptor is the one generally accepted as having the best correlation with human judgements of loudness. Each increase of 10 dBA in the noise level is subjectively judged as an approximate doubling of loudness. Noise intensity covers such a broad range that it is measured logarithmically and noise levels usually represent a statistical average for a given period of time. Since noise is rarely steady or constant for long periods, average noise levels !do not readily account for very high noise levels of very short dura- tion. For example, a long-term average of a 60 decibel (dBA) sound level over a 24-hour period might include peak sound levels of 110 dBA, but such an event might be less than one second. in duration. This fluctuating noise can be described statistically by noise levels exceeded for given percentages of time during a prescribed time period. The commonly used statistical levels are, L90, L50, and L10, for which the number in the subscript indicates the percentage of time that the given level is exceeded. The L90 is indicative of background noise in the absence of local noise events. The L50 is the median or "average" sound level exceeded 50 percent of the time. The L10 is usually indicative of maximum noise from recurring events, such as traffic during peak volumes. 1 67 the total noise exposure for a prescribed time period is given by the Leq, or =quivalent level , which is the dBA level of a constant sound having the amount of acoustical ,energy contained in the time-varying measured noise. The Ldn, or oay-night sound level , is the Leq over 24 hours with a 10 dBA weighting applied iio the nighttime (10:00 PM to 7:00 AM) noise. The Ldn environmental noise descriptor is preferred by the U.S. Environmental Protection Agency. Ldn levels in this report were computed from the measured noise levels by normaliz- rng these levels for traffic variations over a 24-hour period. -he criteria used for evaluation of noise impacts are as follows: Regulations and Guidelines for Environmental Impact Statements. Ihe U.S. Environmental Protection Agency Noise Guidelines for Environmental Impact Statements identify levels which can be used to evaluate noise, impacts. These levels are not to be construed as standards. The document states that ' until more definitive guidelines are established for various types of pro- jects, EPA personnel will be guided by the general considerations" indicated •elow for residential areas: Levels are generally acceptable; no noise impact is gen- Ldn 55 dBA erally associated with these levels. Ldn 55-65 dBA Adverse noise impacts exist; lowest noise level possible should be strived for. 1 Ldn 65-70 dBA Significant adverse noise impacts exist; allowable only in unusual cases where lower levels are clearly, demon- strated not to be possible. Ldn 70 dBA Levels have unacceptable public health and welfare . impacts. he guidelines classify noise increases over the present ambient as follows: 0-5 dBA slight impact 5-10 dBA significant impact over'10 dBA very serious impact 11 The guidelines also specify the information that is needed to evaluate noise. impacts and the abatement measures that should be considered if abatement is r1 qui red. . 68 1 i The Washington State Department of Ecology (WAC 173-60) has also specified regulations relating to maximum environmental noise levels. They have classi- fied various areas or zones and established maximum permissible noise levels. These "EDNA' s" (Environmental Designation for Noise Abatement) are classified as: a) Residential area - Class A EDNA b) Commercial areas - Class B EDNA c) Industrial areas - Class C EDNA The maximum permissible noise levels for these zones are shown below. NOISE LIMITATIONS EDNA OF NOISE SOURCE , EDNA OF RECEIVING PROPERTY CLASS A CLASS B CLASS C CLASS A 55 'dBA 57 dBA 60 dBA CLASS.IB 57 60 65 CLASSIC 60 ' 65 70 Between the hours of 10:00 PM and 7:00 AM, the noise limitation of the above table shall be reduced by 10 dBA for receiving property within Class A EDNA' s. These noise levels may be exceeded on the receiving property by 15 dBA for 1.5 minutes, 10 dBA for 5 minutes, 5 dBA for 15 minutes for any one hour, day or night. The limitations suggested by the State are approximately equivalent to the Ldn levels indicated by the EPA in residential areas. Motor vehicle noise is controlled under a different standard (WAC 173-62) . Because the use of motor vehicles would regularly violate the maximum permissible levels i'n the EDNA' s, additional regulations have been established to cover this category. The following standard has been promulgated by the State of Washington to control the noise .levels from motor vehicles: "No person shall operate any motor vehicle upon any public highway or any combi nati on of such vehicles under any conditions or grade, load, accel- eration or deceleration in such a manner as to exceed the following maximum permissible sound levels for the category of vehicle, as measured, at a distance of 50 feet from the center of the lane of travel within the speed limits specified, under procedures established by the State Commission on Equipment" . 69 i Th maximum permissible sound levels referred to are shown in below. Other con- dilions on motor vehicle noise are also established, but relate primarily to the oc urence of noise from specific activity. MOTOR VEHICLE NOISE PERFORMANCE STANDARDS VEI IICLE CATEGORY 35 MPH OR LESS OVER' 35 MPH MANUFACTURED 1 AFTER 1975 ill vehic les over 10,000 lbs. 86 dBA 90 dBA 86 dBA VWR* or GCWR** Motorcycles 80 84 83 Alj, other motor vehicles 75 - 80 1 80 *QVWR - Gross Vehicle Weight Rating **1CWR - Gross Combination Weight Rating 1 typical noise levels which can be expected from the types of equipment used in construction are listed below: ' NOISE LEVEL (dBA at 50 feet) Earth-Moving Equipment Tractors 70 - 95 Trucks 82 '- 94 i Backhoes 71 - 93 Graders 80 - 94 1 Compactors (rollers) 73 - 74 1 1 Materials-Handling Equipment Concrete Mixers 75 - 88 . Concrete Pumps 81 - 84 1 Impact Equipment Pneumatic Wrenches 82 - 88 Jack Hammers (and rock drills) 81 - 98 Other • Vibrators 69 - 82 Saws 72 - 82 70 . Letters of Comment to Draft EIS This section contains Letters of Comment to the Draft EIS reproduced in full . The Renton Department of Parks and Recreation wishes to express their apprecia- tion to agencies and citizens for their time and effort in reviewing and comment- ing on the Draft EIS. • Comment Response Page" Page Date January !11, 1980 U.S. Army Corps of Engineers 72 95 January 23, 1980 U.S. Coast Guard 73 95 January122, 1980 U.S. Department of the Interior 76 95 January17, 1980 U.S. Environmental Protection Agency 74 95 January 8, 1980 Washington State Department of Ecology 77 96 January 9, 1980 Washington State Department of Fisheries . . . 78 97 January 14, 1980 Washington State Department of Game 80 98 December 19, 1979 Washington State Department of Trans- portation 83 99 December 14, 1979 Washington State Office of Archaeology and Historic Preservation 81 99 December 11, 1979 Washington State Parks and Recreation Commission 82 99 January 4, 1980 METRO 84 100 January 11, 1980 Puget Sound Air Pollution Control Agency 85 100 January 14, 1980 King County Department of Budget and Program Development 86 100 December 11, 1979 King County Division of Parks and Recreation 87 100 January 8, 1980 Renton Fire Department 87 100 January 11, 1980 Renton Planning Department 88 100 December 20, 1980 Renton Public Works Department (Engineering Division) 91 102 January 18, 1980 Renton Public Works Department (Building Division) 92 102 December 10, 1979 Leonard Steiner 93 103 71 I oT' 0p ���' d� DEPARTMENT OF THE ARMY � �" /\i. SEATTLE DISTRICT, CORPS OF ENGINEERS q i P.O. BOX C-3755 L SEATTLE, WASHINGTON 98124 1 O F TA7E5 OFF • 'NPSEN-PL-ER 1 1 J A N 1980 • TSA John Webley, Director '�j�� � '/�` ' City of Rentor. ; S.� � ' IP Department of Parks & Recreation 'ter ,.`'irk. ,-s i' Municipal Building • —! • \ :: s._ 0 i j 200 Mill Avenue South• — I Renton, Washington 98055 `� `� : %` ' - ' `�' Dear Mr.. Webley: We have reviewed the draft environmental impact statement for the proposed 1 Gene Coulon Memorial Beach Park Extension, Renton, Washington, with re- spect to the U.S. Army Corps of Engineers` areas of responsibility for flood control, navigation, and regulatory functions. The city of Renton should be advised that Lake Washington is a navigable water of the United States. A Department of the Army' permit is required for all work in navigable waters of the United States and for the dis- charge of dredged or fill material into waters of the United States in- _cluding adjacent wetlands. Thank you for the opportunity to review this statement. . If you have any 1 questions, please contact Dr. Steven F. Dice, telephone (206) 764-3624, of my staff. Sincerely, 1 . ,41.;e1/44" /6-114.411/ SIDNEY KNUTSON, P.E. Asst Chief,Engineering Division • 72 • • • • f+ `y• ti~ i.,:s.:ai'.:l i id9:n .` a7'ii. .: ,. i"... . • if/,ct��� +' MAILING ADDRESS '4 19( `,t t, �'a . �Z.) S 2 t�%✓ f..,u 72;AST _ �..:.i'�.;' CO""A��: (llp1 ) • r .,'1IZ��-�i Rh THIRTEENTH _i:Ai3 - \ J= 75 SECOND A..E `.,t-`"-• J� SEATTLE. :DASH. PHONE 206 442-7523 16476 • DPL79-1279 • Mr . ! John E. Webley . 2 3 J d i 8O Director , Parks and Recreation The City of Renton Municipal Building 200Mill Avenue , South Renton, WA 98055 • • • Dear Mr . Webley: We have reviewed your draft environmental impact statement (SEPA) , of 7 December 1979 , addressing the proposed Gene Coulon Memorial Beach Park Extension. Our review has not identified any items of Coast Guard concern with this proposed project as presented in your document ; therefore ,' we have no' comments . • Thank you for the opportunity. to review this project . Sincerely, ICHA R.D r o MALM ptain, C .S. Coast Guard Chief of Staff • 13th Coast Guard District k,(911• i��`` • ``,S • • t 1, . N./ • 73 . I •' .$T_OP r - i .' T, United States Department of the Interior �'�•• / a FISH AND WILDLIFE SERVICE ' ""je Ecological Services 2625 Parkmont Lane, S.W. , Bldg. B-3 , • . Olympia, WA 98502 January 22, 1980 Mr. John Webley, Director Renton Parks and Recreation Department Municipal Building 200 Mill Avenue South Renton, WA 98055 Re: Draft Environmental Statement Gene Coulon Memorial Beach Extension i Dear Mr. Webley: We have completed our review of the referenced document as requested by your office. We wish to commend you for meeting with the various resource management agencies at "Muskoxen" during the early planning stages of- your project. This helped eliminate possible conflicts between your proposal and Federal regulations and guidelines. Your EIS reflects a final product basically approved by all .agencies prior to your drafting this document. We appreciate your cooperation in reducing the 15 acre fill . Hopefully this has not effected your initial goals for the project. Our specific comments would only repeat those stated by Washington Department of Game; therefore, we will have no further statement. We hope your city and our agency can maintain this good working relation- ship on future projects. Sincerely, ic:). -<X6 R. G. Starkey ��\� �\ Acting Field Supervisor ��/ 7 aa !7�{ \--- 1:---111' d: +S L4.9�vi ia� ' If:;----ti, ,,.:, • ,:J�� �� `9"/ / 1 ;,1 `` - J 74 U. S. ENVIRONMENTAL PROTECTION AGENCY J�cc ST aTF REGION X rO s. x'" 01200 SIXTH AVENUE SEATTLE, WASHINGTON 98101 jr e O � lq� PROS �/ //�\ REPLY TO M/S 443 : / y L.I ATTN OP: \ ,'• . ,'i' ;t 'z3Ci Mr. John Webley, Director .cj �.XS D PT, %, City of Renton, Department of Parks and Recreai�an, \\\ Municipal Building _. j II�!,� 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Webley: We have reviewed the SEPA draft Environmental Impact Statement (DEIS) for the proposed Gene Coulon Memorial Beach Park extension. We have the following comments for your consideration. We wish to commend you for planning to extend such a park which will increase the opportunities for public access to Lake Washington, with aminimum of serious environmental impacts. We are particularly pleased that the earlier proposal which required 15 acres of fill has been modified into the present plan. However, we do have some questions even about the currently proposed fills . It is not clear whether the fills will have gentle slopes which will create 1 some shallow water areas useful for fish habitat or whether vertical bulkheads are proposed to reduce construction turbidity. It would be useful to know how deep the water is and the total area of lake bottom L.which will be covered by these fills. The effect of the various in-water structures on water circulation is not addressed. Adequate water circulation is necessary to maintain 2 high water quality - a very desirable goal in such recreation areas. For instance, it is unclear whether the entire "waterwalk" will be floating . Water circulation changes in the enlarged boat ramp/moorage area and by ......the piers should particularly examined. —The DEIS indicates that the shoreline within the park extension will be 3 extensively regraded to eliminate steep. drop-offs. If these regrades _extend below the water surface, they should be considered as fills. 75 1 2 The water quality in the drainage ditch appears to be a major problem. Improved water quality would be adventageous to the public to insure 4 the success of the marsh —wildlife habitat area, and to reduce pollution in an area of water contact recreation as well as the pollutions loads to Lake Washington. We urge that the city include all measures neccessary _to end the problem as part of the implementation of the park plan. 1 We appreciate the opportunity to comment on this DEIS. Please 'contact . Judi Schwarz, 442-1285, if you have any questions regarding our, comments . Sincerely, _: C ff-r ,_- V 1 = V" �d,/,•L. Roger) K. Mochnick, Acting Chief ; . Environmental Evaluation Branch • • • I . 1 1 76 STATE OF DEPARTMENT OF ECOLOGY i- - WASHINGTON ': = sYF' Mail Stop PV-11 206i753.2800 env, ' I Lee Ray Dixy Olympia,Washington 98504 Gouernor i•y � � January 8, 1980 John Webley. Renton Department of Parks and Recreation • 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Webley: Thank you for the opportunity to comment on the draft environmental impact statement for the Gene Coulon Memorial Beach Park extension. We have reviewed the EIS and offer the following comments for your consideration. 'Water quality in the existing city drainage ditch should be carefully evaluated before allowing any use for human recreation. 1 Accidental spills of chemicals or petroleum products .from any of the industries upstream could cause serious water quality ' _problems. The final EIS should address the effects of a fixed pier-wavebreak 2 on the normal circulation pattern of the water. A discussion Lof possible water stagnation problems should also be included. (1Every effort should be made to minimize turbidity problems in �, the lake. If you have any questions, please contact Mike Dawda of our Northwest Regional Office at 885-1900. Sincerely, L . Barbara J. Ritchie Environmental Review Section BJR/mgh cc: Mike Dawda, DOE, Northwest Region ' ` • • 77 3 = I. � STATE OF DEPARTMENT OF FISHERIES Lr WASHINGTON 115 Genera!Administration Building,Olympia,Washington 9,504 206/753-6600 ..'.;�sy Dixy Ray Lee Governor • j 9� r1i! i f� January 9, 1980 / 2 Mr. John Webley • / City of Renton • — 'l1 ; Parks and Recreation Department Municipal Building •• -� 200 Mill Avenue South - • % ��� Renton, ' Washington 98055 , 1Dear Mr. Webley: Draft. Environmental Impact Statement • for Gene Coulon Beach Park Extension King County WRIA B-08 • IThe Department of Fisheries has reviewed the above-referenced statement and offers the following comments. This Department has been aware of the City of Renton ''s desire to expand ,recreational opportunities at this location for several months. The ;alternative presented is a result, in part, of project design modification which has occurred during this coordination process. We find the description of fishery resources under our jurisdiction and anticipated impacts generally to be accurately stated. However, we wish to raise the following points : -`For those areas of fill in Lake Washington which will result in a permanent vertical waterward face greater than 1.5 feet below Ordinary High Water 1 (OHW = 21.8 feet) we will request that the entire waterward face be sloped 1.5 feet horizontal to each 1.0 foot vertical to provide shallow water areas __Ifor juvenile salmonid predator avoidance. On page 22 it is stated that as a mitigating measure vertical or near vertical el bulkheads could be built with fill material being placed behind them to reduce turbidity. Will these bulkheads be permanent or temporary? If permanent Lsee the comment immediately above. Is the proposed fixed wave break near the boat launch ramp a floating structure 3 on piles or will fill material be used? If fill material is used how will this affect surface water circulation or sediment deposition? TWill any dredging be necessary, maintenance or otherwise? 5 Since juvenile salmon migration may be adversely affected by artificial lighting their use should be held to a minimum and not illuminate surface waters directly. The proposed channel change to relocate the stream and create the marsh is not _ 6 clearly depicted in detail . Additional detailed plans will be required when application is made for Hydraulic Project Approval . This is also true for • • • Mr. John Webley - 2 - January 9, 1980 Lotherlaspects of in water work activities. Inclusion of these plans. in the FinallEIS would not be inappropriate. 7 [Will sewage pump-out facilities be available at the moorage areas? • 8 E What plans have been made to deal with viscera if cleaning of fish is to L occur at the park? A mitigating measure listed on page 31 states that all pile driving shall be conducted between the months of July and October. This timing requirement is designed to avoid damage to incubating eggs deposited by lake shore spawning • 9 sockeye salmon. Although the use of this shoreline area by lake shore sockeye . for spawning purposes may be minimal due to the fine texture of sediment, if pile driving and all fills in the lake are scheduled from July through October this will avoid turbidity induced increased predation rates upon juvenile sockeye outmigrating from the Cedar River. We appreciate the opportunity to review this statement and hope that you 'will find ur comments useful . Sincerely, ' • • Gordon Sandisdn, Director • mr cc: Bob Zeigler-Game • • • • • 79 iI ^t,E•'r•rF. STATE OF . " ion F� WASHINGTON DEPARTMENT OF GAME ' • y,;. ; 600 North Capitol Way,al-11 Olympia,WA 98504 206/753-5700 . rr i. ' ,' Dixy Lee Ray — r,`\ '-r.39�°y Governor i% \`?; 1 ' // i� , ; �� ` /�O\ Ja I uary 14, 1980 / N./ jQ' �%\ 7 Mr John Webley, Director \ j J ;°�,,t�%' Re,Iton Parks and Recreation Department \/, t '... .� Mu�iicipal Building 4 1 • \\� 201 Mill Avenue South . `I I 1 N� Renton, Washington 98055 DRAFT ENVIRONMENTAL. IMPACT STATEMENT: Gene Coulon Memorial Beach Park Extension Mr Webley, Yo r document was reviewed by our staff as requested; our comments follow. . WeIcommend you for contacting resource agencies in the early planning stages - of your project. This helped eliminate potential problems. Your EIS is basically accurate and .well written. However, we have the following comments , on Your proposal. . We appreciate your scaling down the number of facilities; and eliminating most of the proposed 15-acre fill. From a fish and wildlife standpoint, yot'r final proposal is a much better project. We have two general recommendations. 1) We recommend a settling basin and oil trap to clean storm water runoff. This facility should be as close to the source of pollution as possible. Water entering the constructed wetlands should be free of storm water Lpollutants. • 2) We recommend you use native vegetation as much as possible. Increased Use of native vegetation for landscaping would reduce the need for , 2 Fertilizers and thereby reduce storm water pollutants entering the lake. 1 Many types of native plants can be aesthetically pleasing and also benefit wildlife (for example, dogwood, snowberry, and so forth) . Th.' k you for sending your document. We hope you find our comments helpful. Sincerely, THE DEPARTMENT OF GAME • -C Ie...... Bob Zeigler ' App412 d Ecologist Environmental Affairs Program Habitat Management Division BZ:cv cc: Regional Manager • ' Agencies ' 80. ;TA7p- • • STATE OF • �\?' DEPARTMENT OF TRANSPORTATION KF 01 • A.. , WASHINGTON highway Administration Building,Olympia,Washington 98504 206/753-6005 Dixy Lee Ray December 19 , 1979 Governor Mr. John Webley, Director r .<.,� � v Parks and Recreation Municipal Building /;� \` 2i00 Mill Avenue / lam)) • Renton, Washington 98055 • 1 City of R ntnn Gene Coulon Memorial Beach Park Draft Environmental Impact Statement Dear Mr. Webley: W,e have reviewed the subject document and have no comments to offer regarding the proposal . Thank you for the opportunity to review this information. I I Sincerely, ROBERT S. NIELSEN Assistant Secretary for Public Transportation and Planning • / 7.7 •,..;V// By: WILLIAM P. ALBOHN . • Environmental Planner RSN:lp WPA/WBH • dc: J . D. Zirkle/T. R. Burke Environmental Section • R. Albert • • • • • 81 . STATE OF PRESERVATION OFFICE OF ARCHAEOLOGY AND HISTORIC PRES R WASHINGTON 111 West Twenty-First Avenue,Olympia,Washington 98504 206/753-4011 .J:yF*rr ,r ?y Dixy Lee Ray December 14, 1979 I. ti • Governor John Webley, Director City of Renton Dept. of Parks In reply refer to: 101-F-COE-05 Municipal Building 200 Mill Avenue South Renton, WA 98055 Re: Gene Coulon Memorial Beach Park Extension Dear Applicant: We have reviewed your draft environmental impact statement and find there are no historic/archaeological properties on the State or National Register of Historic Places , or the Washington State Inventory of Historic Places , that will be impacted by the project. In the event that unknown archaeological resources are inadvertently unearthed during construction activities , please notify the Office of Archaeology and Historic Preservation in Olympia, and the Was,h- ington Archaeological Research Center, Pullman, Washington. Sincerely, 1 Jeanne M. Welch, Deputy State Histo • Preser atio ficer and 1 Sheila . Stump, Archaeologis 1 ,d?1 1 i„ i cP/77' t C 1 1 • • 82 Form AHP R-ol (1/79) sTArA, STATE OF WASHINGTON STATE PARKS AND RECRE,ATI9N,COMMISSION WASHINGTON 7150 Cleanwater Lane,Olympia,Washington 98504 .S , 206/753-5755 1314. • :.•,, Dmy Lee Ray Governor December 11 , 1979 \ 1"• , ;1 VZ-3 7r. DEpr, Ay. 35-2650-182 ic141•\ -7 DEIS - Gene Cou on Memorial Beach Park Extension (E-1831 ) Mr. 'John Webley, Director City of Renton Parks and Recreation Department • Municipal Building 200 Mill Avenue South Renton , Washington 980.55 • Dear Mr. Webley: • The staff of the Washington State Parks and Recreation Commission has reviewed the above-noted document and does not wish to make any comment. • Thank you for the opportunity to review and comment. Sincerely, if David W. Heiser, E.P. , Chief Environmental Coordination DWH/PJP:jh • • • - 83 3 a ;, sr ®Ilk CAI) o- - Municipality of Metropolitan Seattle Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 , ij January 4 , 1980 • John Webley, Director , City of Renton . Department of Parks & Recreation Municipal Building 200 Mill Avenue South Renton, Washington 98055 Dear Mr. Webley: Draft Environmental Impact Statement Gene Coulon Memorial Beach Park Extension Metro staff has reviewed this proposal and a' ticipates no adverse impacts to its wastewater facilities or the public transportation system. The measures designed to minimize.. adverse wa er quality ' I impacts are adequate and consistent with the objectives of the 208 Areawide Water Quality Plan. . Thank you for the opportunity to review and omment. Very truly yours , '''' .-:k..;ic,—,_1(:-2_,7=2:1-'7;----ce-1-' , Rodney G. Proctor Environmental Planning Division RGP :apj ` , \ i -- Y---- -,\ • I —I \`�,� `' _ , j Cyr. -7 -'-__--;;:•//- • Cv 1 84 , ® - • 410 West Harrison Street,P.O.Box 9863 (206)344-7330 :=_4 "" , Seattle,Washington 98109 . • January 11 , 1980 I Mr. John Webley, Director • _ City of Renton - Department of Parks and Recreation • • Municipal Building ' 200 Mill Avenue South ' Renton, Washington 98055 , • Dear Mr. Webley: Gene Coulon Memorial Beach Park Extension • • ' In response to the proposed Draft Environmental Impact ' Statement for the Gene Coulon Memorial Beach Park Extension ., this Agency concludes that it adequately addresses the • i i•acts of the proposed zoning changes on air quality. , ,Thank you for the opportunity to comment. . , -Very truly yours • . . . R , . . . , , . . . . . A. R. Dammkoehler Air Pollution Control Officer ' Si . . 'RVING: �� �1 .�\ i/ KING COUNTY �\ , ?West Harrison St. '/ - ^``•`� .,�• I.Box 9863 I (I *`•'� 1 ' 'ittle,98109 1 -. �� C.�' ._.16)344-7330 1 �--� e •• '' :r) ��. 3_ a lam: KITSAP COUNTY ` -++It `'s . ' e.:' .+�� J ' it Operator for Toll —\ r" F„, '' '^),', le Number Zenith 8385 \\\ w'� ''.' �� i nbridge Isla.d,98110 '`�\ .; rs l /�.'' , Dial 344.7330 ���/� - \J� 3CE COUNTY t t \ V Hess Building \/t1rt I 1 Dma,98402 — . . _ ,..,bl 383-5851 GNOHOMISH COUNTY . 61 259-0288 BOARD OF DIRECTORS - AIRMAN:Gene Lobe,Commissionet Kitsap County; • "" VICE CHAIRMAN:Patrick J.Gallagher,Commissioner Pierce County; ones B,Haines,Commissioner 8noho ish County; Glenn K.Jarstad,Mayor Bremerton; William E.Moore,Mayor Everett; Mike Parker,Mayor Tacoma; :._.vey S.Poll,Member at Large; Charles Royer,Mayor Seattle; John D.Spellman,King County Executive; A.R.Dammkoehler,Air Pollution Control Officer. King County,State of Washington 't, John D.Spellman,-.County Executive • Department pf Budget 9nd Program Development Mary Ellen McCaffree,Director -� - Budget Division � x Room 400, king County I ourthouse 516 Third Avenue Seattle,Washington 98104 John M. Rose,Manager (206) 344-7370 January 14 , 1980 Mr . John Webley, Director Renton Department of Parks & Recreation Municipal Building 200 Mill Avenue South Renton , WA 98055 Dear Mr . Webley: The draft EIS for Gene Coulon Memorial Beach Park Extension has been reviewed by several King County departments , and we have no comments to offer at this time . Thank you for the opportunity to review this impact statement . Sincerely, Mary7.en McCaf f r e Chairman Environmental Impac ommittee MEM/pt xVly 1 86 t 1 5+ King County f DIVISION OF PARKS & RECREATION State of Washington i ., z, James E. Webster, Director John D. Spellman, County Executive = ., : lr, 709 Smith Tower Department of Planning and Community Development ~ -�•'`_�• Seattle, Washington 98104 John P. Lynch, Director :; (206) 344-4232 fQ . i December 11 1979 ,.‘� iT Mr. John Webl Director of Parks & Recreation City of Renton a 11_) Municipal Building 200 Mill Avenue South Renton, Washington. 98055 Dear Mr. •Webley, The King County Division of Parks & Recreation has .reviewed your Draft E . I .S . for Gene Coulon Memorial Beach Park and has no comments to make at this time . Thank you for the opportunity to review'. Sincerely Bob Jacobs S Capital Improvements Manager BJ:db - i • • 87 • INTEROFFICE M E M O ` ,r. \I llt 1E1- IrI TO: John Webley, City of Renton Parks Director DATE FROM: 1 Jim Matthew; Battalion Chief SUBJE T : Gene Coulon Memorial Beach Park Draft E.I .S . The draft E .I .S . addresses the concerns of the Fire Department Baer , well . Pre-construction conferences will be necessary for specific details on installation of fire protection equipments . 4,4tOggitAl'gdgiVe4f," • • 88 OF R4,4 ii o THE CITY OF RENTON z U * MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 n ' n.=u CHARLES J. DELAURENTI , MAYOR • PLANNING DEPARTMENT 235- 2550 0947. SE °° MEMORANDUM• • �� li I`/ (( January 11 , . 1980 • TO : John Webley, Director • Department of Parks & Recreation 'N.// .F FROM: Gordon Y. Ericksen, .Planning Director By : David R. Clemens , Senior Planner ' RE : Gene Coulon Memorial Beach Park Expansion Draft Environmental Impact Statement • • We h v,e reviewed the Draft EIS for Gene Coulon Beach Park • Expansion and have the following comments to offer : • . 1 . The City of Renton Shoreline Master Program is the primary mechanism for regulating development along the shores of Lake Washington within the City . The provisions of the Master Program ' supplement the City ' s Comprehensive Plan and Zoning Ordinance . Approva of a Substantial Development Permit , under the Shoreline Master Program and RCW 90 . 48 , is a prerequisite for .approval of other development permits . Where existing land use plans and regulations ' and the necessity for securing various permits are noted in the Draft EIS (e . g. page 7 , 18 and 22 ) , appropriate mention of the 1 Shoreline Master Program should be provided. The Gene Coulon Park Expansion proposal is located almost . • entirely within the designated shoreline of the City of Renton. Therefore, construction of boat ramps , bulkheads , piers and docks , parking, trails and filling and stream alteration must conform with the specific use regulations of the Master Program. Construction of the piers and docks may require a variance from these regulations , which) must be approved by the State of Washington . . —2 . Portions of the park development , specifically the floating piers, docks and log booms , extend beyond the inner harbor line and 2 out to the outer harbor line . The inner harbor line defines the City of Renton ' s corporate limits and the City ' s jurisdiction does not extend beyond. In order to accomplish development of the park in 89 Me,' orandum to John Webley Ja�, uary 11 , 1980 Pa=e Two this portion of Lake Washington , approval from the State of Washington ma, be required. This situation should be investigated and clarified inithe Final EIS . fl3 . 1 The discussion of air quality impacts from additional vehicular traffic generated by the proposal should be expanded. The, reduction in II ov-rall vehicle emissions predicted for 1982 and 1990 as a, result of . 3 tighter Federal guidelines is emphasized in the Draft EIS . We feel it wo 'ld be more appropriate to address the additional air quality im acts of the proposal that could be expected over and above the pr dieted future pollutant levels , whatever they may be . 4 . 1 Regarding reduced conflicts between user groups that may result frim park expansion, it is unclear whether this result is a goal of park 4 detelopment and design or not . The implications of potential \separatio.n which are noted. as mitigating measures should be eplored further with re pect to vandalism, traffic patterns , and the need for police protection - _an park maintenance . Th nk you for the opportunity to review this docum nt . Other than the arias of concern noted above , we feel that the Dra t EIS adequately ad resses the impacts of the proposed action . , I • If you have any further questions , please contact this department . 1 I GYE:DRC : sh I I • 1 , 90 INTEROFFICE CORRESPONDENCE Date December 20, 1979 TO: Warren C. ' Gonnason FROM: Richard C. Houghton SUBJECT: EIS Gene Coulon Park r—The water line should be extended along Lake Washington Blvd. rather than through the park. Extensions then could be made as needed into the park. 1 Also some reimbursement to the park could be derived from other parties (_connecting to the line on the east side of Lake Washington Blvd. 2 Noiproblems with sewers. Should be able to connect to Metro by special �pefmit. The need for a pump station should be re-evaluated considering Ldepth of Metro line. Improvements to Lake Washington Blvd. will be necessary. Probably addi- `� C tion of a left turn lane with lots of storage. This being really the only area on the southeast end of the lake that has 4 a boat launch facility close attention should be given to developing as many facilities for that purpose as is possible. Especially auto-trailer parking facilities. / / i RCH:pmp ° %'N 4 O n ,. % c, '',%s 91 bvi � A 4 . �i D? O PUBLIC WORKS DEPARTMENT z r-TA, o BUILDING DIVISION 235 - 2540 O,9 m` m co- MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 09 O SFcjE�O�P January 18, 1980 BARBA"IA Y. SHINPOCH MAYOR TO: Warren Gonnason FROM: Ron Nelson - SUBJECT: Review EIS Gene Coulon Park 1 I 1 CWould suggest work hours be established 'in order to minimize noise entering the residential areas. Other than that the project looks okay. • RGN/mp Attach. • • 92 RECEIVED 9- DECIa Imo -12 CITY ®f i3N R.NZ DEPT 13239 N. E. 100th %f • \ Kirkland, Wa. 98033 */ /ell ` \• December 12, 1979 • Renton Parks & Recreation Dept. 20,0 Mill Avenue South Renton, Washington 98055 Dear Sir: The proposed extension by the city of Renton of the Gene Coulon Memor- ial Beach Park could have some desireable side benefits to wildlife. If the vegetation removal can be held to a minimum and all vegetation replanting of trees and shrubs were beneficial to wildlife, then a unique habitat could be created. Generally a good mix of evergreen and deciduous that produce berries and provide cover are the most bene- ficial . This could be accomplished in some of the passive use areas. 2 If the log-boom was made three or four logs wide, then it could provide, a resting area for the water fowl that use these environs. With these slight modifications this could be a very desireable addition to the community for both humans and wildlife. • Sincerely, f_e7(f71/., _ , Leonard Steiner, President East Lake Washington Audubon Society LS:sf 93 Responses to Comments COMMENT LETTER FROM U.S. ARMY CORPS OF ENGINEERS January 11, 1980 Comment: The city of Renton should be advised that Lake Washington is a navigable water of the United States. A Department of the Army permit is required for all work in navigable waters of the United States and for the discharge of dredged or fill material into waters of the United States including adjacent wetlands. Response:' The City of Renton Parks and Recreation Department is aware of the Department of the Army requirements. A U.S. Army Corps of Engineers ' permit is listed as a license required on page ii of the Draft EIS. COMMENT LETTER FROM U.S. COAST GUARD - DEPARTMENT OF TRANSPORTATION January 23, 1980 No comment. No response necessary. COMMENT LETTER FROM U.S. DEPARTMENT OF THE INTERIOR, FISH AND WILDLIFE SERVICE January 22, 1980 Thank you for your comment. No response necessary. COMMENT LETTER FROM U.S. ENVIRONMENTAL PROTECTION AGENCY January 7, 1980 Comment 1: We do have some questions even about the currently proposed fills. It is not clear whether the fills will have gentle slopes which will create some shallow water areas useful for fish habi- tat or whether vertical bulkheads are proposed to reduce con- struction turbidity. It would be useful to know how deep the water is and the total area of lake bottom which will be covered by these fills. Response 1: The slopes of any fill below water level would not exceed 12 horizontal to 1 vertical (refer to Comment 1 from Department of Fisheries) . The water is up to ten feet deep in areas of fill . The several small areas of fill would total approximately one acre. Comment 2: The effect of the various in-water structures on water circula- tion is not addressed. Adequate water circulation is necessary to maintain high water quality - a very desirable goal in such 95 recreation areas. For instance, it is unclear whether the en- . tire "waterwalk" will be floating. Water circulation' changes in the enlarged boat ramp/moorage area and by the piers should be particularly examined. Response 2: All pier structures are to be floating or ile-supported struc- tures allowing water circulation beneath. In recent revisions to the master plan, projections adjacent to the boat launch have been reduced and boat launch ramps extended reducing the irregu- larity of the shoreline to improve circulalion. Thus„ the proj- ect would not significantly affect water circulation. ' Comment 3: The DEIS indicates that the shoreline within the park extension will be extensively regraded to eliminate steep drop-offs. If these regrades extend below the water surface, they should be considered as fills. Response 3: The regrades referred to in the Draft EIS are exclusively on- shore and will not extend below the water (refer to 'Response 1 above for discussion of fills) . Comment 4: The water quality in the drainage ditch appears to ibe a major. problem. Improved water quality would be advantageous to the public to insure the success of the marsh-wildlife habitat area, and to reduce pollution in an area of water contact recreation as well as the pollution loads to Lake Washington. We urge that the city include all measures necessary to end the problem as part of the implementation of the park plan. Response 4: Thank you for your comment. The city is examining several approaches to mitigate this problem; however, the complete solu- tion is beyond the scope of this project. COMMENT. LETTER FROM WASHINGTON STATE DEPARTMENT OF ECOLOGY January 8, 1980 Comment 1: Water quality in the existing city drainiage ,ditch should be carefully evaluated before allowing any use for human recrea- tion. Accidental spills of chemicals or petroleum products from any of the industries upstream could cause serious water quality problems. Response 1: Direct recreational use of the ditch is not anticipated; how- ever, the ditch will be posted prohibiting human use' until tests indicate that water quality is adequate. Comment 2: The final EIS should address the effects of a fixed pier- wavebreak on the normal circulation pattern of the water. A discussion of possible water stagnation problems should also be included. 96 Response 2: Due to recent modifications in the plans for the boat launch and the fact that all piers and wavebreaks would either be floating or pile-supported, no significant impact to water circulation will result. Comment 3: Every effort should be made to minimize turbidity problems in the lake. Response 3: Detailed descriptions of the measures used to control turbidity will not be available until final designs are completed. How- ever, clean, coarse material will be used for fills in th.e water. COMMENT LETTER FROM WASHINGTON STATE DEPARTMENT OF FISHERIES January 9, 1980 Comment 1: For those areas of fill in Lake Washington which will result in a permanent vertical waterward face greater than 1.5 feet below Ordinary High Water (OHW = 21.8 feet) we will request that the entire waterward face be sloped 1.5 feet horizontal to each 1.0 foot vertical to provide shallow water areas for juvenile sal- monid predator avoidance. • Response 1: Thank you for this information. Comment 2: On page 22 it is stated that as a mitigating measure vertical or near vertical bulkheads could be built with fill material being placed behind them to reduce turbidity. Will these bulkheads be permanent or temporary? If permanent see the comment immedi- ately above. Response 2: The intention of the mitigating measure was installation of a permanent bulkhead for underwater fills; however, these will not be required since all underwater fill will be at .a. slope of 1.5 to 1 or less. Comment 3: Is the proposed fixed wavebreak near the boat launch ramp a floating structure on piles or will fill material be used? If fill material is used how will this affect surface water circu- lation or sediment deposition. Response 3: The entire fixed wavebreak and pier is either a floating struc- ture or supported by piles, thereby allowing water to circulate. Comment 4: Will any dredging be necessary, maintenance or otherwise? Response 4: A minimal amount of dredging associated with the proposed new boat launch will be necessary. Comment 5: Since juvenile salmon migration may be adversely affected by artificial lighting their use should be held to a minimum and not illuminate surface waters directly. 97 Response 5: Artificial lighting will avoid illuminating surface waters directly. Comment 6: The proposed channel change to relocate the stream, and create the marsh is not clearly depicted in detail . Additional de- tailed plans will be required when application is made for Hydraulic Project Approval . This is also true for other aspects of in-water work activities. Inclusion of these plans in the Final EIS would not be inappropriate. Response 6: Detailed plans are presently being prepared and are. not avail- able for inclusion in the Final EIS. They will be supplied with application for a Hydraulics Permit and Corps of Engineers Permits. Comment 7: . Will sewage pump-out facilities be available at the moorage areas? , Response 7: The potential for sewage pump-out facilities for the moorage areas is still . being investigated with the Department of Ecology. Comment 8: What plans have been made to deal with viscera if cleaning of fish is to occur at the park? - Response 8: For waste disposal , drains from fish-cleaning stations will be connected to the sanitary sewer system or to sewage pump-out facilities. Comment 9: A mitigating measure listed on page 31 states that all pile- driving shall be conducted between the months of July. and October. This timing requirement is designed to avoid damage to incubating eggs deposited by lake shore spawning sockeye salmon. Although the use of this shoreline area by lake shore sockeye for spawning purposes may be minimal due to the fine texture of sediment, if pile driving and fills in the lake are scheduled from July through October this will avoid turbidity induced in- creased predation rates upon juvenile sockeye outmigrating from the Cedar River. Response 9: Thank you for this information. OMMENT LETTER FROM WASHINGTON STATE DEPARTMENT OF GAME January 14, 1980 Comment 1: We recommend a settling basin and oil trap to clean storm water runoff. This facility should be as close to the source of pollution as possible. Water entering the constructed wetlands should be free of storm water pollutants. • 98 Response 1: A detention pond for stormwater runoff is proposed upstream of the marsh area. (Refer to page 51 of the Draft EIS. ) In addition, oil/water separators and si-it traps will be installed in the catch basins for all the roads and parking lots within the project. (Please refer to Response 4 to the Environmental Pro- tection Agency and to page 27 of the Draft EIS. ) Comment 2: We recommend you use native vegetation as much as possible. Increased use of native vegetation for landscaping would reduce the need for fertilizers and thereby reduce storm water pollu- tants entering the lake. Many types of native plants can be aesthetically pleasing and also benefit wildlife (for example, dogwood, snowberry, and so- forth) . Response 2: The use of native vegetation wherever possible is part of the plan for the park expansion. (Please refer to page 29 of the Draft EIS. ) Inclusion of food-producing species (e.g. , haw- thorne, dogwood, willow, snowberry, vine maple and wild rose) was stated as a mitigating measure on page 31.. Along with reducing stormwater pollutants, maintenance costs and problems would be minimized by the planting of native vegetation (Refer to page 48 of the Draft EIS) . ' I COMMENT LETTER FROM WASHINGTON STATE DEPARTMENT OF TRANSPORTATION December 19, 1979 No comment. No response necessary. COMMENT LETTER FROM WASHINGTON STATE OFFICE OF ARCHAEOLOGY AND HISTORIC PRESERVATION December 14, 1979 Comment: In the event that unknown archaeological resources are inadver- tently unearthed during construction activities, please notify the Office of Archaeology and Historic Preservation in Olympia, and the Washington Archaeological Research Center, Pullman, Washington. Responise: If any archaeological resources are discovered during construc- tion, the office of Archaeology and Historic Preservation will be notified. 1 COMMENT LETTER FROM WASHINGTON STATE PARKS AND RECREATION COMMISSION December 11, 1979 No comment. No response necessary. 99 COMMENT LETTER FROM METRO January 4, 1980 • No response necessary. COMMENT LETTER FROM PUGET SOUND AIR POLLUTION CONTROL AGENCY January 11, 1980 No response necessary. COMMENT LETTER FROM KING COUNTY DEPARTMENT OF BUDGET AND PROGRAM DEVELOPMENT January 14, 1980 No comment. No response necessary. COMMENT LETTER FROM KING COUNTY DIVISION OF PARKS & RECREATION December 11, 1979 No comment. No response necessary. ;COMMENT LETTER FROM RENTON FIRE DEPARTMENT January 8, 1980 Comment: Pre-construction conferences will be necessary for specific de- tails on installation of fire protection equipments. 'esponse: Specific details for the installation of fire protection equip- ment will be determined with the help of the Fire Department. Construction plans for park structures will then be finalized. 'OMMENT LETTER FROM RENTON PLANNING DEPARTMENT anuary , 9:s Eominent 1: The City of Renton Shoreline Master Program is the primary mechanism for regulating development along the shores of Lake Washington within the City. The provisions of the Master Pro- gram supplement the City' s Comprehensive Plan and Zoning Ordi- nance., Approval of a Substantial Development Permit, under the Shoreline Master Program and RCW 90.48, is a prerequisite for approval of other development permits. Where existing land use plans and regulations and the necessity for securing various permits are noted in the Draft EIS (e.g. page 7, 18 and 22) , appropriate mention of the Shoreline Master Program should be provided. 100 The Gene Coulon Park Expansion proposal is located almost en- tirely within the designated shoreline of the City of Renton. Therefore, construction of boat ramps, bulkheads, piers and docks, parking, trails and filling and stream alteration must conform with the specific use regulations of the Master Program. Construction of the piers and docks may require a variance from these regulations, which must be approved by the State of Wash- ington. Response 1: The Shoreline Master Program and/or the need for a shoreline management Substantial Development Permit are referenced on pages ii and 18 of the Draft EIS. Representatives of the Department of Ecology, the Renton Plan- ning Department and the Parks Department and its consultants j attended a meeting to resolve this question. It was agreed that no amendment to the City Shoreline Master Program, conditional use permit or variance to the shoreline regulations would be appropriate or necessary to allow the proposed development. A substantial development permit will be required under the Renton Shoreline Master Program. Comment 2: Portions of the park development, specifically the floating piers, docks and log booms, extend beyond the inner harbor line and out to the outer harbor line. The inner harbor line defines the City of Renton' s corporate limits and the City' s jurisdic- tion does not extend beyond. In order to accomplish development of the park in this portion of Lake Washington, approval from the State of Washington may be required. This situation should be investigated and clarified in the Final EIS. Response 2: The area between the inner and outer harbor limit is controlled by the Port of Seattle on behalf of. the Department of Natural Resources and portions of this are presently under lease to the City of Renton. Additional leases will be obtained from the Port for the entire length of the park. Comment 3: The discussion of air quality impacts from additional vehicular traffic generated by the proposal should be expanded. The re- duction in overall vehicle emissions predicted for 1982 and 1990 as a result of tighter Federal guidelines is emphasized in the Draft EIS. We feel it would be more appropriate to address the additional air quality impacts of the proposal that could be expected over and above the predicted future pollutant levels, whatever they may be. Response 3: The air quality impacts of the proposal will be less in 1990 than they are at present. The concentration of carbon monoxide is not . predicted to exceed 1 ppm. Even after adding all the projected traffic, the 1990 concentrations will be about 80% lower than the existing levels. (Refer to letter from Puget Sound Air Pollution Control Agency. ) Comment 4: Regarding reduced conflicts between user groups that may result from park expansion, it is unclear whether this result is a goal of park development and design or not. The implications of potential separation which are noted as mitigating measures 101 should be explored further with respect to vandalism, traffic patterns, and the need for police protection and park mainte- nance. Response 4: The possible reduction in conflicts and separation of uses should result in reduced requirements for maintenance and police protection relative to the volume of park use. COMMENT LETTER FROM RICHARD HOUGHTON - RENTON PUBLIC WORKS DEPARTMENT (ENGINEERING DIVISION) - December 20, 1979 • Comment 1: The water line should be extended along Lake Washington Blvd. rather than through the park. Extensions then could be made as needed into the park. Also some reimbursement to the park could be derived from other parties connecting to the line on the east side of Lake Washington Blvd. 1 Response 1: Construction of the water line along Lake Washington Boulevard would require numerous supply lines across the railroad line into .the park with associated complicated easement negotiations. This alternative would be significantly more expensive to the Renton Parks Department. Comment 2: No problems with sewers. Should be able to connect to Metro by special permit. The need for a pump station should be re- evaluated considering depth of Metro line. Response 2: The need for a pump station will be re-evaluated during design phases. Comment 3: Improvements to Lake Washington Boulevard will be necessary. Probably addition of a left turn lane with lots of storage. Response 3: Improvements to Lake Washington Boulevard as suggested are shown on the plan and discussed in the text of the Draft EIS. omment 4: This being really the only area on the southeast end of the lake that has a boat launch facility close attention should be given to developing as many facilities for that purpose as is possi- ble. • Especially auto-trailer parking facilities. response 4: Consistent with other park uses, the maximum amount of boat launch facilities and associated parking have been included in • the expansion plan. • 102 COMMENT LETTER FROM RON NELSON - RENTON PUBLIC WORKS DEPARTMENT (BUILDING DIVISION) January 18, 1980 Comment: Would suggest work hours be established in order to minimize noise entering the residential areas. Response: A suggested mitigating measure on page 35 of the Draft EIS was to limit working hours to the period 8:00 AM to 6:00 PM in order to lessen the impact of construction noise on residential areas. COMMENT LETTER FROM LEONARD STEINER December 10, 1979 Comment 1: If the vegetation removal can be held to a minimum and all vegetation replanting of trees and shrubs were beneficial to wildlife, then a unique habitat could be created. Generally a good mix of evergreen and deciduous that produce berries and provide cover are the most beneficial . This could be accom- plished in some of the passive use areas. Response 1: Thank you for your comment. (Please refer to Response 2 to the Washington State Department of Game. ) Comment 2: If the log-boom was made three to four logs wide, then it could provide a resting area for the water fowl that use these ;envi- rons. Responie 2: The suggestion for providing a resting area for waterfowl is an interesting one and will be considered 'for the final park design. Thank you for your recommendation. • 103