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Ile 31 July 2000 <br /> AGE-NC Pioject No 98-0433 <br /> I <br /> Page 2 of 5 <br />' one 1-liter amber bottle and three chilled 40-m1 volatile organic analysis (VOA) vials containing 0 5 <br /> nil hydrochloric acid(18%) as a sample preservative After collection, the samples were labeled and <br /> placed to a chilled container for transportation under chain-of-custody to McCampbell Analytical <br />' Labor atones (MAI), a DHS-certified analytical laboratory Each sample was analyzed for the <br /> following <br />' • Total pets oleum hydi ocarbons quantified as gasoline and diesel (TPH-g and,TPH-d) in <br /> accordance with EPA Method 8015 Modified, <br /> • Volatile aromatic hydrocarbons benzene, toluene, ethyl benzene and total xylene (BTE&X) <br />' In accordance with EPA Method 8020, <br /> • Oxygenated fuel additives methyl butyl ether (MTBE), tertiary butyl alcohol(TBA), dt- <br />' Isopt opyl ether (DIPS), ethyl tertiary butyl ether (ETBE) and tertiary amyl methyl ether <br /> (TAME) to accot dance with EPA Method 8260 Modified <br /> 2 3 ' DOMESTIC WELL SAMPLE COLLECTION <br />' A water sample was collected from the domestic drinking water well located on site After the well <br /> pump was opet aced for one minute, a sample was collected from the a dedicated sample tap The <br />' sample was placed into one 1-liter amber bottle lacking preservative and three chilled 40-m1 VOA <br /> vials containing 0 5 ml.hydrochloric acid (18%) as a sample preservative <br />' The sample was labeled and stored to a chilled container and transported under chain-of-custody to J <br /> MAI to be analyzed for constituents listed to Section 2 2 <br />' 3.0. FINDINGS <br /> 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION <br /> Gauging data from 02 May 2000, indicated an extraordinary steep gradient of 0 024 ft/ft from well <br /> MW-5 toward well MW-3 This gradient and flow direction was inconsistent with previously <br /> modeled data, thet efot e, gt ound water depths were t e-gauged on 20 June 2000 Depth to gi ound <br /> water at the site on 20 June 2000 ranged from 16 48 to 18 17 feet below well casing tops The <br /> gt ound water elevations at the site t anged from 40 58 feet to 40 77 feet above mean sea level (msl) <br /> The data indicates an average increase of the ground water elevation at the site of 1 98 feet since the <br /> pt evtous quarterly monitoring event <br /> IAdvanced GeoEnv►ronmental,Inc <br /> T J <br />