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17 April 2000 <br /> AGE-NC Project No. 95-0100 <br /> Page 2 of 6 <br />' Soil samples were collected from soil boring MW-1 at five-foot intervals beginning at five feet <br /> below surface grade (bsg) and soil samples were collected from soil borings MW-2 and MW-3 at <br /> five-foot intervals beginning at forty-feet bsg, using a California-modified split tube sampler loaded <br />' with three clean 2-inch by 6-inch brass sleeves. A 140-pound hammer was utilized to advance the <br /> sampler 18 inches; the number of blows required to advance the sampler over 6-inch increments was <br /> recorded on the boring logs. <br /> Both ends of the soil sleeve of each sample collected for laboratory analysis were covered with <br /> Teflon sheets, capped and sealed with tape. The selected soil samples were stored in a chilled <br />' container, transported under chain-of-custody to McCampbell Analytical Inc. (MAI), in Pacheco, <br /> California, and were analyzed for the following: <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in <br /> accordance with EPA Method 8015 Modified; <br />' • Volatile aromatic compounds-benzene,toluene,ethylbenzene and total xylenes(BTEX)and <br /> methyl tertiary butyl ether (MTBE) in accordance with EPA Methods 8020; <br />'• • Fuel oxygenates including MTBE, tertiary butyl alcohol (TBA), di-isopropyl ether (DIPE), <br /> ethyl tertiary butyl ether(ETBE) and tertiary amyl methyl ether(TAME) in accordance with <br /> EPA Method 8260 Modified. <br /> 1 <br /> 2.1.1. EQUIPMENT DECONTAMINATION <br /> Hollow stem augers were steam cleaned prior to boring advancement. Sampling tools and brass <br /> sleeves used for sample collection were thoroughly washed with a solution of Alconox and were <br /> ' thoroughly rinsed with tap water prior to each sampling run. Following drilling activities, rinseate <br /> generated from decontaminating the equipment was placed in properly labeled D.O.T. model 1714 <br /> ' 55-gallon drums and stored on-site in an area lacking public access. <br /> ' 2.1.2. WELL COMPLETION <br /> Soil borings MW-1 through MW-3 were completed as conventional ground water monitoring wells <br /> MW-1 through MW-3, respectively_ Field numbering of the wells was determined .prior to <br /> installation of each well to aid the PHS-EHD in field inspections. The summary of the construction - <br /> details are depicted in the soil boring logs (Appendix A). <br /> • <br /> ' Advanced CeoEnvironmental,inc. <br /> 1 , <br />