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Vr ry <br /> 3.0 SCOPE OF WORK <br /> The San Joaquin County Public Health Services-Environmental Health Division(PHS/EHD) <br /> is requiring further investigation of the site to determine the vertical and lateral extent of <br /> hydrocarbon impacted soil. To determine the extent of soil contamination at the site, <br /> GeoAudit proposes to drill two soil borings near the former dispenser. The borings will be <br /> drilled to depths of approximately 30 feet. Samples will be collected at five-foot intervals <br /> and field screened using a photo-ionization detector (PID). If organic vapors are <br /> encountered at depths of 30 feet, the borings will be extended to depths of 50 feet or to <br /> groundwater, whichever is encountered first. <br /> 4.0 PROCEDURES <br /> To meet the project objectives, the following procedures will be performed: <br /> 1) Prepare a Site Health and Safety Plan in accordance with the Occupational Safety <br /> and Health Guidance Manual for Hazardous Waste Site Activities - Prepared by <br /> National Institute for Occupational Safety and Health, Occupational Safety and <br /> Health Administration, U.S. Coast Guard and U.S. Environmental Protection <br /> Agency, October 1985. <br /> 2) Notify the San Joaquin County Environmental Public Health Services - <br /> Environmental Health Division (PHS/EHD) 48 hours prior to commencement of any <br /> work. <br /> 3) Drill two borings near the former dispensers using a truck-mounted drill rig equipped <br /> with continuous-flight, 8-inch diameter hollow-stem augers. The borings will be <br /> drilled to depths of approximately 30 feet. The boring locations are depicted on <br /> Figure 2. <br /> 4) Obtain soil samples at five-foot intervals using a split-tube sampler loaded with three <br /> pre-cleaned brass sleeves. <br /> 5) Preserve soil in the lead brass sleeve by covering both ends with aluminum foil, <br /> capping, and sealing with tape. <br /> 6) Label and log soil samples on a chain-of-custody form. <br /> 7) Store the samples under ice and transport the samples in a chilled container to a <br /> State certified laboratory for analysis. <br /> 8) Selected soil samples will be analyzed for total petroleum hydrocarbons (TPH as <br /> gasoline) and volatile aromatics (BTE&X), in accordance with EPA methods 8015 <br /> C—bp-h-wa S­i�I... 2 <br />