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AUNWEPS ESIGNEPS:CQvSULiwB <br /> All soil samples will be screened in the field with a photoionization detector (PID) by placing <br /> the tip of the detector between soil sample tubes as the tubes are separated from the sampling <br /> device. Soil samples will also be screened with the PID after placing the sample in a sealed <br /> plastic bag. <br /> _ Push locations SB-2, SB-3, and SB-4 will be advanced with a hand auger to 5 feet bgs or until <br /> undisturbed native soil is encountered. Hand auguring will not be necessary at SB-1 since this <br /> boring will be located over the former excavation. All sample holes will be advanced using a <br /> direct push sampling device. This method of sampling has the advantage of not generating soil <br /> cuttings. The soil sampling device will be advanced to the groundwater table (approximately <br /> 45 feet bgs) at each location. <br /> If soil samples are submitted for analysis the stainless steel liners containing the samples will be <br /> capped with Teflon' sheeting and plastic caps. The samples will be placed in plastic bags and <br /> stored on ice at a temperature of approximately 4°C for transport to an analytical laboratory. <br /> r <br /> All soil samples will be described following the Unified Soil Classification System under the <br /> direction of a California Registered Geologist. Borehole locations will be measured in the field <br /> relative to prominent land marks with a tape measure. <br /> r <br /> 2.3.2 Groundwater Sampling <br /> Grab groundwater samples will be collected at 45 feet bgs at all sampling locations and at 65 <br /> feet bgs from the tank location (SB-1) and down (SB-2) and up gradient (SB-3) locations. The <br /> 45-foot grab groundwater sample will be collected from a 3/4" PVC well screen placed in the <br /> bore hole. The 65-foot groundwater sample will be collected from a Hydropunch type sampler. <br /> 2.3.3 Borehole Abandonment <br /> Sample locations will be abandoned by backfilling boreholes with a cement/bentonite slurry <br /> placed in the hole with a tremie pipe. <br /> 2.4 ANALYTICAL METHODS <br /> Soil and groundwater samples will be analyzed for benzene, toluene, ethylbenzene, and total <br /> xylene (BTEX) by EPA Method 8020 and for total petroleum hydrocarbons as gasoline (TPH-G) <br /> by an analytical laboratory certified by the State of California. <br /> L\PROJECfS\PEPBOYS.WP 3 January 1997 <br /> r <br />