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Soil samples were collected at approximately five foot intervals <br /> . commencing at five ft using a split spoon tube sampler loaded with <br /> pre-cleaned brass tubes . The sampling equipment was decontaminated <br /> using tri-sodium phosphate solution (TSP) and twice rinsed with the <br /> last rinse using distilled water prior to sampling. <br /> Soil samples were collected in the lowest brass liner and preserved <br /> by covering both ends with Teflon tape, capping with plastic caps <br /> and sealing the caps with plastic tape. The soil samples were <br /> labeled and logged under Chain-of-Custody (COC) control. They <br /> were stored in a cooler with ice, transported to a state certified <br /> laboratory for analysis with COC documentation. <br /> The soil samples were labeled as to well and depth, ie the soil <br /> sample collected from MW-1 at the 5 foot level was marked MW-1 51 . <br /> The soil cuttings were stored on and covered with visqueen awaiting <br /> the results of the soil analysis. <br /> Groundwater Sampling <br /> On June 5, 1995, six days after the installation of the wells, John <br /> N. Alt and John P. Cummings of JPCA went to the site to collect <br /> groundwater samples. Michael Infurna of SJCEHD was also on site. <br /> The wells were developed by pumping, purging and collecting the <br /> purged groundwater in 55-gallon drums labeled awaiting analysis. <br /> • Each of the wells was pumped to dryness three times. The wells <br /> were slow in recovering but the wells were considered stabilized <br /> when the following indicator parameters were within the ranges <br /> established below. Temperature (plus or minus 0. 5 degrees <br /> Centigrade) , pH (within plus or minus 0. 1 pH unit) and Specific <br /> Conductance (within plus or minus 5% of the reading range) . Well <br /> data sheets are contained in Appendix A. <br /> The pump was decontaminated using tri-sodium phosphate solution <br /> (TSP) and twice rinsed with the last rinse using distilled water <br /> prior to being used in each well. <br /> Three groundwater samples, one from each well, was collected by a <br /> clean dedicated bailer, placed in two 40 ml VOAs with Teflon septa, <br /> labeled, held in a cooled (4 Degrees C) ice chest and transported <br /> to a State Certified Laboratory, under COC documentation, for <br /> analyses. <br /> Chemical analysis <br /> The soil and groundwater samples collecred were analyzed for Total <br /> Petroleum Hydrocarbons as Gasoline (TPHG) and Benzene, Toluene, <br /> Ethylbenzene and Xylene (BTEX) . The groundwater samples were <br /> analyzed for TPHG by EPA Method 8015 modified with purge and trap <br /> preparation 5030 (GC/FII?) with detection limits of 50ug/l. EPA <br /> Method 602 will be utilized for BTEX with a detection limit of <br /> 6 <br />