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i <br /> Ietc. ) and were field screened for volatile hydrocarbons using a <br /> CGT calibrated to hexane. At a minimum, the soil sample <br />' exhibiting the highest instrumental reading and/or located near <br /> the capillary fringe from each boring was submitted for <br /> laboratory analysis. <br /> Those soil samples selected for possible chemical analysis were <br /> retained in the brass tubes, labeled, covered with teflon liner, <br /> capped with plastic end caps, sealed with duct tape, and placed <br /> I on ice. Selected soil samples were delivered to Applied P & Ch <br /> Laboratory (State of California (Department of Health Services) <br /> licensed laboratory] for chemical analyses. <br /> All borehole cuttings generated during drilling operations were <br /> stockpiled on site and covered with plastic sheeting for <br /> temporary storage. <br />' TPE's protocols relative to hollow-stem auger drilling and soil <br /> sampling procedures, sample handling procedures, and waste <br />' handling and decontamination procedures are included as <br /> Appendices B, C, and D, respectively. <br /> 3 . 1. 3 Chemical Analytical Results <br /> I <br /> Each borehole soil sample submitted for chemical analysis was <br /> analyzed for TPHG (EPA Method 8015) and BTEX (EPA Method 8020) . <br /> In addition, one sample collected from monitoring well MW-1 was <br /> tested for total lead (EPA Method 7420) . Certified laboratory <br /> analytical data sheets and chain-of-custody documentation is <br />' included in Appendix F and the results of the chemical analyses <br /> are summarized in Table 1 . <br /> 3 . 1. 3 . 1 Monitoring Well Boring MW-1 <br /> Chemical analyses were performed on soil samples collected at <br />' depths of 31. 5, 48 . 8 , 55. 5 , and 75. 5 feet below ground surface. <br /> TPHG concentrations ranged from nondetectable at 75 . 5 feet to 80 <br /> ppm at 48 . 8 feet. BTEX compounds were detected in each sample <br /> tested. <br />' 3 . 1. 3 . 2 Monitoring Well Boring MW-2 <br />' Chemical analyses were conducted on soil samples taken at depths <br /> of 51 . 5 and 81 5 feet below ground surface. TPHG and BTEX were <br /> not detected in the sample collected at 81 . 5 feet. TPHG, <br /> benzene, and xylenes were detected in the sample obtained at 51. . 5 <br />' feet at concentrations of : 1 . 1 ppm, . 046 ppm, and . 019 , <br /> respectively. <br /> 3 . 1. 3 . 3 Monitoring Well Boring MW-3 <br />' 4 <br />