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amec`9 1 ' Following the completion of remediation activities, a deed restriction will be prepared and recorded that will prohibit the use of the Site for residential or other sensitive receptor use (including schools, day care facilities, or hospitals), and will also prohibit structures in the ' vicinity of sample location GMX-13 unless further assessment, remediation activities, or engineering controls with risk management measures are implemented. The deed restriction 1 will also prohibit the use of shallow groundwater underlying the Site as a drinking water source. 5.0 PROPOSED REMEDIATION PLAN This section presents the rationale for and activities associated with the proposed remedial ' actions for the Site. 5.1 RATIONALE AND PROPOSED ACTIONS Based on the summary of the SLRA presented in Section 3.0, elevated concentrations of PAHs (and to a lesser extent TPH) were detected in shallow soil samples from borings GMX-09, GMX-25, and GMX-31. AMEC will provide engineering and remedial construction services required for the remediation of affected soil within the Site to meet the risk-based remedial goals for the project, which are presented on Table 3. Remediation will involve excavating and managing this PAH-affected soil in the vicinity of locations GMX-09, GMX-25, and GMX-31 to approximately 6 feet bgs; collecting confirmation soil samples from the excavation floor and sidewalls; profiling impacted soil for determination of appropriate off-site disposal options and off-hauling the excavated soil to an appropriate off-site disposal facility; backfilling the excavation with excess site soil from the "fill mound" located in the central ' portion of the Site and returning the excavation to an original grade; and restoration of any rerouted and/or active utilities. Engineering and remedial activities shall be performed in accordance with applicable local, State, and Federal regulations. 5.2 REMEDIAL ACTIVITIES A description of the proposed remediation activities is presented below. 5.2.1 Preliminary Activities Upon approval of this plan from the Water Board, detailed designs and planning of the excavation activities will be completed, and a qualified subcontractor will be selected. The subcontractor will obtain permits for the proposed work from the City of Tracy, San Joaquin County, and other agencies as appropriate. AMEC and the selected contractor will prepare a site-specific Health and Safety Plan (HASP) in accordance with the requirements of 40 Code of Federal Regulation (CFR) 1910.120. The HASP will be provided to all field personnel. A copy of the HASP will be maintained at the Site during all field activities. AMEC Geomatrix Inc I:\Doc_Safe\6000s\6628.001\3000 REPORTS\Excavation Work Plan-8.12.08\1 Text,cover and slips\Text.doc 5