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1 <br /> PENN AMENDMENT NO. 3 <br /> u <br /> TO AGREEMENT BETWEEN <br /> TOWN OF MASHPEE, MASSACHUSETTS <br /> AND <br /> GHD INC. <br /> WHEREAS GHD(ENGINEER)and the Town of Mashpee, MA by its Sewer Commission (OWNER/TOWN)entered <br /> into an Agreement for Site 4 Wastewater Treatment Facility Design Services dated August 2018; and <br /> WHEREAS, TOWN and GHD executed Amendment No. 1 and Amendment No. 2; and <br /> NOW, THEREFORE, GHD and TOWN agree to proceed with the Route 151 Sewer (Phase 2 Infrastructure on <br /> Route 151 between Old Barnstable Road and Mashpee Town line)—"Phase 2a", as detailed below. <br /> ADDITIONAL SCOPE OF SERVICES <br /> Task No. Task Description <br /> 1 EVALUATION PHASE <br /> 1.1 Update planning level flows for areas outlined in West Mashpee Study Area (as defined in <br /> Attachment A)with three years of water use data(2018 to 2020),Water use data to be provided <br /> by the Town. <br /> 1.2 Review Implementation Plan outlined in the `Town of Mashpee Watershed Nitrogen <br /> Management Plan - Final Recommended Plan / Final Environmental Impact Report' (WNMP <br /> RPR), prepared by GHD and dated May 2015 in order to do the following: <br /> A. Identify Town decisions that are needed to size Phase 2a infrastructure, including: <br /> i. Raw wastewater conveyance routes for Phase 2a (force main, low pressure and/or <br /> gravity). GHD to identify up to five (5) alternate scenarios for raw wastewater <br /> conveyance from Phase 2a infrastructure to potential treatment sites and effluent <br /> disposal locations for Town review. Alternative scenarios are anticipated to evaluate <br /> conveyance to Joint Base Cape Cod (JBCC) and a future Back Road Site Facility. <br /> Each alternative scenario will outline a proposed service area for Phase 2a. <br /> ii. Input on feasibility of sites for future pump station locations for Phase 2a infrastructure <br /> (GHD to identify up to five (5) potential sites for Town consideration). Town decision <br /> will be needed on feasible pump station locations for the preferred force main route to <br /> the proposed treatment facility. <br /> iii. Decision on whether any wastewater flow designated to be conveyed and treated at <br /> the Mashpee Commons WWTF in the WNMP RPR should be considered in the sizing <br /> of Phase 2a infrastructure. GHD will evaluate up to three (3) alternatives for the <br /> conveyance, treatment, and disposal of wastewater designated for the Mashpee <br /> Commons WWTF in the WNMP RPR, as outlined below: <br /> a) Treatment and effluent disposal at JBCC. <br /> b) Treatment and effluent disposal at Back Road Site. <br /> c) Town to negotiate capacity with Mashpee Commons for treatment and recharge. <br />