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e. <br /> el <br /> 139 South Center Street, Stockton, California January 21, 1994 <br /> Chevron U.S.A. Products Company Page 3 "r <br /> 3.0 SCOPE OF WORK <br /> 3.1 Site-Specific Health and Safety Plan <br /> Groundwater Technology had previously prepared a site-specific Health and Safety Plan required by <br /> the Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations <br /> and Emergency Response" guidelines (29 CFR 1910.120). The Health and Safety Plan was reviewed <br /> and amended by Groundwater Technology personnel, following a complete review of site conditions <br /> and the new scope of work. The document was reviewed and signed by all Groundwater Technology <br /> personnel and subcontractors personnel performing work at the site. <br /> Groundwater Technology conducted a technical review of pertinent information prior to proceeding <br /> with assessment work at the site. Monitoring well permits were obtained from the City of Stockton, <br /> and the SJCDEH prior to beginning drilling (Appendix A). <br /> 3.2 Sol] Barings <br /> On September 14, 1993, Groundwater Technology drilled one soil boring utilizing a truck-mounted <br /> drill rig equipped with 8-inch-diameter hollow-stem augers. The boring (MW-6) was drilled to a depth <br /> of 60 feet below ground surface (BGS) to accommodate monitoring well installation. The field <br /> geologist maintained a log of the materials encountered during drilling using the Unified Soil <br /> Classification System (Appendix B). Soil cuttings generated from the drilling were placed in <br /> DOT-approved 55-gallon drums for characterization and disposal at a later date. <br /> 3.3 Soil Sampling <br /> During drilling, soil samples were collected at 5-foot intervals, beginning at approximately 5 feet BGS <br /> to the bottom of the boring. Samples were collected using a 2.5-inch outside diameter (O.D.) <br /> split-spoon sampler, lined with three 2-inch-diameter by 6-inch-long brass sample tubes. The sampler <br /> was driven 18 inches ahead of the augers at each sample point. Soil samples were analyzed for <br /> hydrocarbon vapors in the field using a portable photoionization detector (PID). One sample from <br /> GROUNDWATER <br /> TECHNOLOGY <br />