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EXHIBIT A1 <br />City of Everett – Replacement of Reservoir 3 <br />Contract Amendment No 1 5 Scope of Services <br />perfluorinated compound (PFC) environmental laboratory analysis by an independent <br />firm working under subcontract. Due to the environmental sampling requested, the <br />drillers decontaminated the drilling equipment prior to arriving at the site, in between <br />each boring location, and upon completion of the drilling. All investigation derived waste <br />(IDW; i.e., soil cuttings, purged groundwater, and decontamination water) were placed in <br />55-gallon drums and stored onsite pending analytical results for proper disposal. As part <br />of the IDW disposal requirements, one composite soil sample collected from both of the <br />borings will be collected for analysis of diesel, oil, and gasoline-range total petroleum <br />hydrocarbons; benzene, toluene, ethylbenzene, and xylenes (BTEX), and Resource <br />Conservation and Recovery Act (RCRA) 8 metals. <br />3. Revised Draft Geotechnical Engineering Report to provide geotechnical engineering <br />recommendations from the additional geotechnical bores and associated laboratory <br />analysis. <br />4. Performed additional geotechnical analysis based on new soil bearing capacity at the 8 <br />MG site which differed from the twin 4 MG site. <br />5. Performed additional geotechnical analysis related to the construction of stormwater <br />detention vaults adjacent to the steep slopes on the west side of the site. <br />Client Responsibilities <br />1. City to coordinate with the fire department to relocate equipment within the fire training <br />facility to perform the additional field explorations. <br />Assumptions: <br />1. The Draft Geotechnical Report will be delivered prior to the 60% design milestone. <br />Deliverables: <br />1. Revised Draft Geotechnical Report (PDF format) <br />2. Additional geotechnical analysis documented in Final Geotechnical Report. (PDF format) <br />Subtask 700.6 – PFAS Reuse Plan <br />Consultant Services <br />The following is added to the scope of work for Task 500: <br />1. Contamination Management Plan and Land Use Control Documentation: The <br />objective of the contamination management plan (CMP) is to support the potential for <br />handling and reuse of PFAS-contaminated soil at the Reservoir 3 site. The objective of <br />the land use control (LUC) documentation is to specify the long-term use and monitoring <br />requirements of the PFAS-contaminated soil reuse location. The development of the <br />CMP and LUC document will address safe soil handling and State of Washington <br />Department of Ecology (DOE) requirements for soil reuse. This task will consist of the <br />following activities: <br />a) Review of existing documents regarding subsurface soil chemical characteristics and <br />groundwater depth <br />b) Review of evolving PFAS regulations <br />c) Identification of project-specific soil and groundwater screening levels