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y <br /> Health Administration, US Coast Guard and US 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 four bonngs at the site using a truck-mounted drill rig equipped with <br /> continuous-flight, 8-inch diameter hollow-stem augers Three of the borings will be <br /> drilled to depths of approximately 10 feet, a fourth boring will be drilled to a depth <br /> of approximately 20 feet The proposed boring locations are depicted on Figure 2 <br /> 4) Obtain soil samples at five-foot intervals using a split-tube sampler loaded with three <br /> pre-cleaned brass sleeves One boring will be continuously sampled <br /> 5) Pieserve soil in the lead biass sleeve by covering both ends with aluminum or teflon <br /> sheets, 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) Log auger returns in accordance with the Unified Soil Classification System <br /> 9) Monitor auger returns and soil sample duplicates for the presence of volatile organics <br /> using a photo-ionization detector (PID) pre-calibrated to isobutylene <br /> 10) Decontaminate sampling equipment in an alconox solution and rinse twice with water <br /> prior to each sampling run <br /> 11) Steam-clean auger flights after drilling <br /> 12) Place soil cuttings on plastic sheeting and store on-site pending analytical results <br /> 13) Collect two groundwater samples from borings near the former UST excavation using <br /> a Hydropunch Samples will be collected using disposable plastic bailers <br /> 14) Complete the 20-foot boring as a two-inch diameter monitoring well in accordance <br /> with the well design in Figure 3 <br /> 15) No sooner than 48 hours after installation, measure to the nearest 0 01 foot, the <br /> static water level in the new wells <br /> a..bswl.\uA4 xnm. i. <br /> . acat.rtt-ia�-ouuRnss'rosrtw�rz 9s <br /> 3 <br />