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Field Sampling Report for Tank T-2 and T-I Areas Laura Scudders Tracy Plant Tracy, California On January 24, 1989 drillin g subcontractor' ROY F• WESTON, INC. (WESTON ntractor, spectrum Exploration � and their conducted the site investigation activities as Inc. (Spectrum) LauraWESTOs January 9, 1990 "Soil Investigation Work Plan, " in Laura Scudders Plant located at 100 W. Valpico Road in Trac California. � " at-the Y, The WESTON representatives arrived on-site at 8:00 a. 24, 1989. The Spectrum crew was already on-site, he ri on January was set up for the boring of borehole T1 over the middledrill of the i , tank T-2 area. The Spectrum crew was using a 6" hollow stem auger bit to install the borehole. According to the Spectrum crew, the auger flights had been steam cleaned prior to loading onto the truck. The borehole was located as shown on the enclosed figure. Upon reaching the depth of 20' samples were collected. ' soil sample as well lithologic California modified split Poon mplles were collected utilizing a brass tubes. The two bottom most tubesrwithin thelinedhsplitfour�spoonnwere utilized for the collect of the analytical tubes were labeled accordingly soil samples' These 21.5'} and With the correspondingatubehlocatipon in thling etsplitespoon; 20 "A" representing the first bottom most tube and the second bottom most tube. The remaining tubedr sails nwere utilized for lithologic interpretations. Each sample tube upon retrieval was sealed with either teflon lining or aluminum foil lining prior to placement of the plastic end caps. The plastic end caps were then secured with plastic electrical tape and labeled. The two tubes containing the soils were then placed into plastic ziplvck bags and kept on ice for shipment to the laboratory. This procedure was repeated ever encountered. After retrieving y 5 until groundwater was was tharhl g each sample, the split spoon sampler g y decontaminated with an alconox/water followed by a potable water rinse. mixture Groundwater was encountered at a depth of 47.9' beneath the surface. Upon encountering the groundwater, the boreholerowas extended an additional 5r. A clear teflon bailer was then lowered into the annulus of the auger flights and a standing water sample was collected. This standing water sample was examined for signs the Of floating product. None were observed. The groundwater within the total bailer was transferred to an appropriate glass - petroleum-hydrocarbonanalysis -.The bailer was_container used -- - - - - ---- --- - - - - _- - ` --- — to purge 3 standing water volumes. Upon completion of the - purge,