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139 South Center Street, Stockton, California January 25, 1993 <br />Chevron U.S.A. Products Company Page 3 <br />3.0 SCOPE OF WORK <br />3.1 Site -Specific Health and Safety Plan <br />Groundwater Technology prepared a Site -Specific Health and Safety Plan required by the <br />Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations and <br />Emergency Response" guidelines (29 CFR 1910.120). The Site -Speck Health and Safety flan was <br />prepared by a Groundwater Technology personnel, following a complete review of site conditions and <br />any existing Site -Specific Health and Safety Plans for the site with the project manager. The <br />document was reviewed and signed by all Groundwater Technology personnel and subcontractors <br />personnel performing work at the site. <br />3.2 Background Review <br />Groundwater Technology conducted a technical review of pertinent information prior to proceeding <br />with assessment work at the site. <br />3.3 Permitting <br />40 Monitoring well permits were obtained from the City of Stockton, Cal -Trans, and the SJCDEH prior to <br />beginning any on-site drilling (Appendix A). <br />3.4 Soil Borings <br />On November 4, 1992, Groundwater Technology drilled one soil boring utilizing a truck -mounted drill <br />rig equipped with 8 -inch diameter hollow -stem augers. The boring (MW -5) was drilled to a depth of <br />60 feet below grade surface (BGS) to accommodate monitoring well installation. The field geologist <br />maintained a log of the materials encountered during drilling using the Unified Soil Classification <br />System (Appendix B). The drilling operation was supervised by a California registered geologist. Soil <br />cuttings generated from the drilling were placed in DOT -approved 55 -gallon drums for <br />characterization and disposal at a later date. <br />3.5 Soil Sampling <br />During the drilling operations, soil samples were collected at five-foot intervals, beginning at <br />approximately 5 feet below grade to the bottom of the boring. Field screening was conducted <br />visually and with a photoionization detector (PID) at intervals of five feet beginning at five feet below <br />CA GROUNDWATER <br />TECHNOLOGY <br />