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' 26 October 2001 <br /> AGE-NC Project No 01-0839 <br /> Page 5 of 8 <br />' 3 5 GROUND WATER SAMPLING <br /> Following completion of borings B-2 and B-3,a grab water sample was collected The water sample <br />' was collected by lowering anew disposable plastic bailer through the center of the augers The water <br /> sample was transferred into four 40-m1 EPA-approved VOA vials containing 0 5 ml 18% HCl as a <br /> sample preservative After collection,the samples were labeled and placed In a chilled container for <br />' transportation under chain-of-custody to MAI <br />' 3 6 GRAB GROUND WATER ANALYSES <br />' Each grab ground water sample was analyzed for <br /> • TPH-g by EPA Method 8015 Modified, <br /> • BTEX and MTBE by EPA Method 8020, and <br /> • • Fuel additives including MTBE, TBA, DIPS, ETBE, TAME, EDB and 1,2-DCA by EPA <br /> Method 8260M <br /> 37 EQUIPMENT DECONTAMINATION <br /> The hollow stem augers were steam-cleaned prior to advancing each boring Sampling tools and <br /> brass sleeves used for sample collection were thoroughly washed with a solution of Alconox and <br /> were rinsed with tap water prior to each sampling run Wash and rinse water generated from <br /> decontaminating the equipment wasplaced in properly labeled DOT-approved model 17H 55-gallon <br /> drums and stored on-site <br /> 4.0. FINDINGS <br /> Soil descriptions were utilized to construct the site geological model, laboratory analysis of soil and <br /> ground water samples were utilized to assess the hydrocarbon-impact on soil and ground water <br /> 4 1 SOIL PROFILE <br /> Generally, brown, dry to moist, silt and sandy silt were encountered from surface grade to <br /> . approximately 45 feet bsg Brown, moist to saturated, silt and sandy silt were encountered from <br /> approximately 60 feet to 90 feet bsg Poorly graded sand was encountered at 20 feet and 25 feet bsg <br /> Advanced GeoEnvironmental,Inc <br />