Volume 2: Draft Gorst Planned Action Environmental Impact Statement

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GORST PLANNED ACTION EIS | AFFECTED ENVIRONMENT, SIGNIFICANT IMPACTS, AND MITIGATION MEASURESMitigation MeasuresIncorporated Plan Features• Focusing growth in existing UGAs and cities where solid waste services already exist would reduce impactsrelated to providing curbside pickup for added population and promote more curbside customers. Therewould also be less need for additional RAGFs.Applicable Regulations and Commitments• Coordination and monitoring at transfer facilities and RAGFs would be ongoing to ensure adequate solid wastecapacity. Service levels for curbside collection as outlined in the CFP would continue or improve to encouragerecycling.Other Potential Mitigation Measures• Based on available landfill capacity at the County’s current contracted landfill location a new or extendedcontact could be enacted to provide landfill capacity well beyond the 2025 planning horizon.Significant Unavoidable Adverse ImpactsFuture population growth and development would continue to increase the amount of solid waste generated inthe county under any alternative, especially the action alternatives. With Solid Waste Management Plans, regularlyupdated as appropriate, no significant unavoidable adverse impacts are anticipated.3.13.3. Water, Wastewater, and StormwaterThis section describes the environmental considerations related to utilities in the study area. An evaluation andreview of existing levels of service, estimated needs and demand for service, and projected levels of service undereach alternative for water, wastewater, and stormwater is provided. Surface water, groundwater, and waterquality was previously described in Section 3.2 Water Resources. The utilities analysis is based on the stormwaterplan and capital improvement program. Utilities information was collected from the City of Bremerton CityServices Element of the Comprehensive Plan (City of Bremerton 2010) and City of Bremerton GIS data. Othersources used in this analysis include: Gorst Creek Watershed Characterization Report (City of Bremerton 2012),Gorst Creek Watershed Inventory and Characterization Technical Memorandum (Parametrix 2011), and KitsapCounty’s 2013-2025 CFP (Kitsap County 2012).Affected EnvironmentWatershedWaterWater (drinking) for residents in the watershed is supplied from City of Bremerton utility lands and also theAnderson Creek aquifer. Primary water service is provided by both the City of Bremerton and Port Orchard in thestudy area. The Sunnyslope Water District No. 15 provides water to unincorporated rural areas in the watershed.The Gorst aquifer currently has five wells and six wellhead protection areas. The City of Bremerton supplies waterto the Gorst UGA and portions of the SKIA UGAs (City of Bremerton 2012). The City of Bremerton partially supplieswater to the McCormick Woods area. There is one reservoir in the watershed, which is not in the City ofBremerton, located near the Twin Lakes area, just upstream from the Gold Mountain Golf Course. There are twomajor water mains in the watershed. One of the water mains is a 28-inch diameter pipe installed in 1950 along WBelfair Valley Road and Gorst Creek that supplies water from the Union River reservoir and surrounding wells formthe Gorst UGA. The other 18-inch water main, which was installed in 1976, follows the shoreline of Alexander Lakeand then heads along Heins Creek to the Gorst UGA. Two water pump stations are located in the watershed, one inthe central portion of Gorst Creek (Pump Station #3) and the other along W Belfair Valley Road near DivisionDraft | June 2013 3-222
GORST PLANNED ACTION EIS | AFFECTED ENVIRONMENT, SIGNIFICANT IMPACTS, AND MITIGATION MEASURESAvenue W (Pump Station #17). The two major water mains converge at this pump station, which is near theconfluence of Gorst Creek with Heins and Parish creeks. The 18-inch is the discharge pipe for Pump Station #17.See Figure 3.13-1 Gorst: Drinking Water and Wastewater Systems for a map of water facilities water mains andwells in the Gorst UGA vicinity.WastewaterWastewater (sanitary sewer) in the watershed is managed on most parcels with on-site septic systems. Twowastewater systems exist in the watershed. One wastewater system, maintained by the City of Port Orchard PublicWorks and West Sound Utility District, is located in the southeastern portion of the watershed and servesdevelopments connected to SW Old Clifton Road. The other wastewater system, maintained by the City ofBremerton, includes two sewer pump stations and is associated with the Gorst UGA and described later.See Figure 3.13-1 Gorst: Drinking Water and Wastewater Systems for a map of pump stations and sewer mains inthe Gorst UGA vicinity.StormwaterIn 2006, Kitsap County analysis of its Comprehensive Plan indicated the level of impervious area in differentwatersheds (Kitsap County 2012a). The Gorst Creek Watershed was found to have approximately nine percentimpervious area, which is relatively low due to the Bremerton CULs that remain forested, as well as the as yetundeveloped SKIA, which is slated for much employment growth in the future.The urban areas of Port Orchard, part of Bremerton, and Gorst currently occupy 6,650 acres (24 percent) of thelarger Sinclair Inlet watershed encompassing the Gorst Creek Watershed and other territory including the City ofBremerton and the PSNS occupying the majority of the north shoreline, and the City of Port Orchard centrallylocated on the south shore. Other commercial centers in the watershed include Annapolis, Manchester, andSunnyslopeStormwater runoff in the watershed that is not naturally dispersed and infiltrated is conveyed over impervioussurfaces including roofs, streets, and parking lot into roadside ditches that eventually discharge directly to streamswater bodies including Gorst Creek and Sinclair Inlet. Currently, only the McCormick Woods development haswater quality treatment ponds. No other formal water quality facilities or flow control structures in the watershed.As previously stated in Section 3.2 Water Resources and Section 3.4 Plants and Animals the majority of the upperand central portions of the watershed is forested and owned by the City of Bremerton. The forested land naturallydisperses and infiltrates stormwater, recharging groundwater in the Gorst aquifer. In the lower portion of thewatershed, stormwater runoff from roads including SR 3 and scattered rural residences is conveyed throughroadside ditches and culverts. Sediment accumulation occurs at culverts and sediment removal occurs often as amaintenance practice.Existing conditions of water flow and habitat were analyzed in the Gorst Creek Characterization Report (City ofBremerton 2012). The water flow assessment is based on the major watershed-scale hydrologic processes thatnaturally contribute to and affect stream flows; the subcomponents of the water flow process include an analysisof surface water delivery, storage, discharge, and recharge capacity (Stanley et al. 2010). Stormwater runoff frompollutant generating impervious surfaces often impact water resources including water flow. The characterizationreport (City of Bremerton 2012) included a model that integrated individual components of the water flowprocess, as well as human activities that are impairments to the process and contribute to stormwater runoff. Thereport divided the watershed into assessment units and identify areas for protection, restoration, conservation,and development.In general, the characterization report (City of Bremerton 2012)and model output provided data that supportedland use planning for protection of the north central portion of the watershed, the tributaries, and the estuary,while allowing for additional growth and development in the south, and southeastern portions of the watershed.Draft | June 2013 3-223
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KITSAP COUNTYCITY OF BREMERTONHED P
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VOLUME 2: GORST PLANNED ACTIONENVIR
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FACT SHEETProject TitleGorst Creek
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GORST PLANNED ACTION EIS | FACT SHE
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TABLE OF CONTENTSFact Sheet .......
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GORST PLANNED ACTION EIS | TABLE OF
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1.0 SUMMARY1.1 Purpose of Proposed
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GORST PLANNED ACTION EIS | SUMMARY
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2.0 ALTERNATIVES2.1 IntroductionThe
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FIGURE 2-1 GORST CREEK WATERSHED AE
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FIGURE 2-2 GORST URBAN GROWTH AREAW
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FIGURE 2-3 GORST WATERSHED PLANNING
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FIGURE 2-4 GORST UGA LAND USE: ALTE
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FIGURE 2-10 GORST WATERSHED ASSESSM
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FIGURE 2-11 GORST CREEK WATERSHED:
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FIGURE 2-12 GORST WATERSHED PLANNIN
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FIGURE 2-13 PROPOSED FISH PASSAGE B
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GORST PLANNED ACTION EIS | AFFECTED
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Lake UnionReservoirQgdQaQgoQgoBreme
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City UtilityLandsBremerton West UGA
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GorstCreek.Jarstad CreekBremerton W
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FIGURE 3.2-3 GORST: IDENTIFIED EXIS
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FIGURE 3.4-1 GORST CREEK WATERSHED:
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Bremerton West UGAW BELFAIR VALLEY
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FIGURE 3.7-1 GORST WATERSHED PLANNI
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FIGURE 3.7-2 GORST CREEK WATERSHED:
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Lake UnionReservoirBremertonHeinsCr
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GORST PLANNED ACTION EIS | APPENDIC
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GORST CREEK WATERSHED PLAN, GORST S
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Date Name/Agency Summarysharedpatht
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Exhibit 2. SWOT AnalysisStrengths -
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IhaverentalpropertiesthatarezonedHT
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ATTACHMENTSA. Scoping Advertisement
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What is an Environmental Impact Sta
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ORDINANCE NO.________AN ORDINANCE O
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PLANNED ACTION ORDINANCEfor the pla
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PLANNED ACTION ORDINANCE(4) Element
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PLANNED ACTION ORDINANCESection 5.
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PLANNED ACTION ORDINANCEEXHIBIT BPL
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Volume 2: Draft Gorst Planned Action Environmental Impact Statement

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