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approximate depth of 65 feet or ten feet into the first <br /> groundwater whichever is encountered first. JPCA will use a C-57 <br /> licensed driller and 8-inch diameter hollow-stem augers. Three - <br /> two inch diameter monitoring wells will be constructed so as to <br /> extend at least five feet into the saturated zone. The location <br /> of the proposed monitoring wells is shown in Figure 2 . <br /> Soil samples will be collected at each 5 ft level interval or at <br /> significant changes in stratigraphy commencing at a depth of ten <br /> feet, using a split spoon tube sampler loaded with pre-cleaned <br /> brass tubes. These soil samples will be checked in the field <br /> utilizing a PID instrument to ascertain if the samples contain <br /> fuel elements above background. <br /> Soil samples collected in the lowest brass liner will be <br /> preserved by covering both ends with Teflon tape, capping with <br /> plastic caps and sealing the caps with plastic tape. Soil <br /> samples, with readings found to have above background levels on <br /> the PID will be labeled and logged under Chain-of-Custody (COC) <br /> control . Soil samples will be stored in a cooler with ice, <br /> transported to a state certified laboratory for analysis with COC <br /> documentation. <br /> One groundwater sample will be collected from each boring. A <br /> clean dedicated bailer will be used to obtain the samples, then <br /> the sample will be placed in two 40 ml VOAs with Teflon septa, <br /> labeled, held in a cooled (4 Degraes C) ice chest and transported <br /> to a State Certified Laboratory, under COC documentation, for <br /> analyses. <br /> Sampling equipment will be decontaminated using tri-sodium <br /> phosphate solution (TSP) and twice rinsed with the last rinse <br /> using distilled water prior to sampling. <br /> Soil cuttings will be stored on and covered with visqueen. Rinse <br /> and wash water will be stored in 55 gallon drums. <br /> Task 3 <br /> The boring will be logged by inspection of the samples and <br /> classified using the Unified Soil Classification System by a <br /> California Certified Engineering Geologist. <br /> Task 4 <br /> The soil and groundwater samples collected will be analyzed for <br /> Total Petroleum Hydrocarbons as Gasoline (TPHG) ; Benzene, <br /> Toluene, Ethylbenzene and Xylene (BTEX) ; and Oxygenates; <br /> The groundwater samples will be analyzed for TPHG by EPA, Method <br /> 8015 modified with purge and trap preparation 5030 (GC/FID) with <br /> detection limits of 50ug/l. EPA Method 602 will be utilized for <br /> 2 <br />