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a <br /> excavation. The boring will be completed as a 2-inch groundwater <br /> monitoring well. The proposed location is illustrated in Figure 2. <br /> If soil or groundwater contamination is encountered, the <br /> installation of additional soil borings and/or monitoring wells may <br /> be required. <br /> To meet the project objectives, the following procedures will be <br /> performed: <br /> 1) Prepare a site health and safety plan in accordance with the <br /> occupational Safety and Health Guidance Manual for Hazardous <br /> Waste Site Activities - Prepared by National Institute for <br /> Occupational Safety and Health, occupational Safety and Health <br /> Administration, U. S. Coast Guard and U.S. Environmental <br /> Protection Agency, October 1985. <br /> 2) Notify the San Joaquin County Environmental Public Health <br /> Services - Environmental Health Division (PHS/EHD) 48 hours <br /> prior to commencement of any work. <br /> 3) Drill one boring immediately southwest of the tank excavation <br /> using truck-mounted, continuous-flight, 8-inch diameter <br /> hollow-stem augers. The boring will be drilled to a depth of <br /> approximately 30 feet. <br /> 4) obtain soil samples at five-foot intervals using a split-tube <br /> sampler loaded with three pre-cleaned brass tubes. <br /> 5) Preserve soil in the middle brass tube by covering both ends <br /> with aluminum foil, capping, and sealing with tape. <br /> b) Label and log soil samples on a chain-of-custody form. <br /> 7) Store the samples under ice and transport the samples in a <br /> chilled container to a State certified laboratory for <br /> analysis. Soil samples will be analyzed for total petroleum <br /> hydrocarbons (TPH as gasoline and diesel) and volatile <br /> aromatics (BTE&X) , in accordance with EPA methods 8015 and <br /> 8020, respectively.. <br /> 8) Log auger returns in accordance with the Unified_ Soil <br /> Classification System. <br /> 9) Monitor auger returns and soil sample duplicates for the <br /> presence of volatile organics using a photo-ionization <br /> detector (PID) pre-calibrated to isobutylene. <br /> 10) Decontaminate sampling equipment in a tri-sodium phosphate <br /> solution (TSP) and rinse twice with water prior to each <br /> sampling run. <br /> 2 <br />