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5431 Grant Line Road, Banta, California April 7, 1994 <br /> Chevron USA Products Company Page 3 <br /> 3.0 ADDITIONAL ASSESSMENT WORK <br /> 31 Site-Specific Health and Safety Plan/Background Review/Permitting <br /> Groundwater Technology prepared a site-specific Health and Safety Plan as required by the <br /> Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations and <br /> Emergency Response" guidelines (29 CFR 1910 120) The Health and Safety Plan was prepared by <br /> Groundwater Technology personnel, following a complete review of site conditions The document was <br /> reviewed and signed by all Groundwater Technology personnel and subcontractors prior to performing <br /> work at the site <br /> Groundwater Technology conducted a technical review of all pertinent information prior to proceeding <br /> with assessment work at the site Temporary groundwater monitoring well/soil boring installation <br /> permits were obtained through the SJCPHS-EHD (Appendix A) <br /> 32 Soil Borings <br /> On January 5, 1994, Groundwater Technology personnel supervised the drilling of three soil borings to a <br /> depth of approximately 15 feet below grade utilizing a truck-mounted dnll rig equipped with 8-inch <br /> outside-diameter (O D ) hollow-stem augers All drilling equipment was steam cleaned prior to drilling <br /> each boring, and sampling equipment was washed between sampling intervals All soil generated from <br /> the borings was placed on and covered with plastic sheeting pending characterization On February 8, <br /> 1994, approximately 0 8 cubic yard of soil was removed from the site by Integrated Wastestrearn <br /> Management, Inc of Milpitas, California and hauled to the BFI facility in Livermore, California <br /> 33 Sal Sampling <br /> During the drilling operations, soil samples were collected at 5-foot intervals, beginning at approximately <br /> 5 feet below grade to the bottom of each boring Samples were collected using a 2 5-inch 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 field screened for <br /> hydrocarbon vapors using a photo-ionization detector (PID) One sample from each 5-foot interval was <br /> sealed with aluminum foil, capped, taped, labeled, placed on ice in an insulated container, and delivered <br /> __'__j GROUNDWATER <br /> 4894EAR aiTr _.____j r _2 TECHNOLOGY <br />