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City of Bainbridge Island Eagle Harbor Beach Mains Replacement 30% Design Wing Point Country Club CarolloTemplateWaterWave.pptx July 15, 2013 Agenda • Introductions • Project History • Project Overview • Project Schedule • Project Costs CarolloTemplateWaterWave.pptx • Questions and Answers 2 Introductions • City Staff – Larry Ward – Project Manager – Chris Hammer – Engineering Manager • Carollo Engineers – Lara Kammereck – Project Manager – Anh Quach – Project Engineer • Roth Hill CarolloTemplateWaterWave.pptx – Erik Waligorski – Design Manager • ESA – Pete Lawson - Permitting 3 CarolloTemplateWaterWave.pptx PROJECT HISTORY 4 CarolloTemplateWaterWave.pptx The City of Bainbridge Island has two sewer service areas serving portions of the island 5 CarolloTemplateWaterWave.pptx The Winslow sewer service area is served by the City’s WWTP Source: 2004 City of Bainbridge Island Comprehensive Plan 6 CarolloTemplateWaterWave.pptx The South Island service area is served by Kitsap County Sewer District 7 Kitsap Co. Sewer District 7 WWTP Source: 2004 City of Bainbridge Island Comprehensive Plan 7 CarolloTemplateWaterWave.pptx Wastewater in Winslow conveyed to WWTP via Hwy 305 and Wing Point PS 8 CarolloTemplateWaterWave.pptx Treated effluent from the Winslow WWTP discharges to Puget Sound via a 16-in diameter force main 9 Force mains have failed several times due to corrosion triggering replacement Hwy 305 PS failed spilling 400K gallons sewage into Puget Sound Commenced 30% Design BHC performed study Wing Point PS failed 3 times CarolloTemplateWaterWave.pptx 2003 2009 2011 2012 10 CarolloTemplateWaterWave.pptx Several alternative routes were evaluated for the Hwy 305 PS force main 11 CarolloTemplateWaterWave.pptx Several alternative routes were evaluated for the Hwy 305 PS force main 12 CarolloTemplateWaterWave.pptx Several alternative routes were evaluated for the Wing Point PS force main 13 City recommended alignment along the beach • Utilize current Easements • Repair and Replacement Focus • Less ROW Improvements CarolloTemplateWaterWave.pptx • Less neighbor/traffic disturbance 14 CarolloTemplateWaterWave.pptx PROJECT OVERVIEW 15 The design project consisted of several components • Topographical Survey • Environmental Permitting • Biological Assessment • Critical Areas and Cultural Resources Evaluation • Geotechnical Exploration • Trenchless Technologies Analysis CarolloTemplateWaterWave.pptx • Easements and Construction Permitting • 30% Design 16 CarolloTemplateWaterWave.pptx Design engineers have completed the 30% level design 17 Design Summary • Hwy 305 FM replaced with ~ 3,370 LF 12-inch HDPE pipe • Wing Point FM replaced with ~ 3,860 LF 6-inch HDPE pipe CarolloTemplateWaterWave.pptx • Effluent FM replaced with ~ 3,730 LF 16-inch HDPE pipe 18 Geotechnical explorations revealed various constructability issues • High Water Table (Tidal Influence) • Need for Buoyancy Calculations • Dewatering • Trench Stabilization CarolloTemplateWaterWave.pptx • Flowing Sand 19 Several trenchless construction methods were evaluated in order to minimize disturbances Trenchless Method Pipe Bursting Considerations • Ground surface heaving possible due to expansion of pipe during bursting. • Additional excavation pits required where pipe trenchless construction methods bends. • Bypass system required aboveground deemed feasible, and the projectthrough wetlands. Ultimately, were NOT will be constructed using an open cut Sliplining • Additional pull and insertion pits required construction method. where pipe bends. CarolloTemplateWaterWave.pptx • Bypass system required aboveground through wetlands. Horizontal Directional Drilling • Potential for drilling fluid released to wetlands and Puget Sound. • Alternate alignment required due to minimum bending radius of HDD tool. 20 Construction activities will impact a total of 45 parcels • The replacement force mains will be constructed within the existing easement where possible • ~ 5,500 SF of permanent easement must be acquired (3 parcels) CarolloTemplateWaterWave.pptx • ~ 18,000 SF of temporary construction permit required (42 parcels) 21 Construction along the beach will require federal, state and local permits Federal CarolloTemplateWaterWave.pptx Permit Agency Section 404/10 Nationwide Permit US Army Corps of Engineers Endangered Species Act Section 7 Consultation US Fish and Wildlife Service/National Marine Fisheries Service National Historic Preservation Act Section 106 Consultation Washington Department of Archaeology and Historic Preservation 22 Construction along the beach will require federal, state and local permits State Permit Agency CarolloTemplateWaterWave.pptx Section 401 Water Quality Certification Washington State Department of Ecology Coastal Zone Management (CZM) Certification Washington State Department of Ecology Aquatic Lands Lease and/or Rights of Access Agreement Washington Department of Natural Resources Hydraulic Project Approval (HPA) Washington Department of Fish and Wildlife NPDES Permit for Construction Activity Washington State Department of Ecology WSDOT Utility Crossing Permit Washington State Department of Transportation 23 Construction along the beach will require federal, state and local permits Local CarolloTemplateWaterWave.pptx Permit Agency Shoreline Conditional Use/Substantial Development Permit City of Bainbridge Island Critical Areas Review City of Bainbridge Island Clearing and Grading Permit City of Bainbridge Island 24 The Biological Assessment revealed that several animal species may be affected Effect** Common Name Coastal-Puget Sound DPS Bull Trout ESA Status * Critical Habitat Species/ Critical Habitat Threatened No NLAA Threatened No NLAA Threatened Yes Yelloweye Rockfish Threatened No NLAA Canary Rockfish Threatened No NLAA Bocaccio Rockfish Endangered No NLAA Southern DPS Eulachon Threatened No NLAA Marbled Murrelet Threatened No NLAA Southern Resident Killer Whale Endangered Yes Stellar Sea Lion Threatened No NLAA Humpback Whale Endangered No NE Puget Sound DPS Steelhead CarolloTemplateWaterWave.pptx Puget Sound ESU Chinook Salmon NLAA/ NLAA NE/ NLAA 25 CarolloTemplateWaterWave.pptx The project area falls within several regulated critical areas Source: Kitsap County, 2007; USFWS, 2010; NWI, 2009; Roth Hill Engineering Partners 26 Cultural resources evaluation demonstrated that no historic properties will be impacted CarolloTemplateWaterWave.pptx • ESA photo of sites? 27 Project Schedule critical path are Easements, Permits and Fish Window • Easement Acquisition in 2013 to meet 2014 construction window • Permit Approval may take 6 – 9 months • Fish window for beach work July 16 – Aug 31 CarolloTemplateWaterWave.pptx • Easement and permit timelines may push construction to 2015 fish window 28 CarolloTemplateWaterWave.pptx Next Steps for 2014 Construction • August – December 2013 Easement Acquisition • September – February 2014 Final Design • August 2013 – June 2014 Permit Approval • June – October 2014 Construction 29 Project Schedule for 2015 Construction Sep 2013 Oct Nov Dec Jan Feb Mar Apr May 2014 Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar 2015 Apr May Jun Jul Aug Notice to Proceed CarolloTemplateWaterWave.pptx 60% Design City Review 90% Design City Review Final Design Easement Acquistion Temp Permit Acquisition Permitting Project Bidding Contract Award Construction 30 CarolloTemplateWaterWave.pptx Project Costs • ANH 31 CarolloTemplateWaterWave.pptx QUESTIONS 32 CarolloTemplateWaterWave.pptx PARKING LOT 33 CarolloTemplateWaterWave.pptx Three permanent easements must be acquired 34 CarolloTemplateWaterWave.pptx Three permanent easements must be acquired 35 Forty-two temporary construction permits must be acquired CarolloTemplateWaterWave.pptx • ERIK – ENHANCE?? 36