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20 October 2002 <br /> • AGE-NC Project No 99-0592 <br /> Page 2 of 3 <br /> opened and water-was allowed to run until the pump turned on The samples were transferred into <br /> laboratory-supplied 40-m1 EPA-approved VOA vials containing 0 5 ml 18% hydrochloric acid as <br /> a sample preservative The sample containers were then labeled with well designation,date,time of <br /> sampling and the sampler's initials The samples were transported in a chilled container under chain- <br /> of-custody to McCampbell Analytical, Inc (MAI), a California Department of Health Services <br /> (DHS)-certified laboratory, for analysis The samples were analyzed for <br /> I Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 modified, <br />' Benzene, toluene, ethylbenzene and total xylenes(BTEX) in accordance with EPA Method <br /> 8021B, and <br /> • Fuel additives di-isopropyl ether(DIPE), ethyl tertiary-butyl ether(ETBE), methyl tertiary- <br /> butyl ether(MTBE),tertiary-amyl methyl ether(TAME),tertiary-butanol(TBA),methanol, - <br /> ethanol, and 1,2-dibromoethane (EDB) and 1,2-dichloro ethane (1,2-DCA) in accordance <br /> with EPA Method 8260B <br /> lie 3.0. FINDINGS <br /> Ground water elevation, flow direction, and gradient were determined from field data collected on <br /> 29August 2002 Laboratory analysis of ground water samples was used to quantify the impact to <br /> ground water <br />' DIRECTION <br /> 3 1 GROUND WATER GRADIENT AND FLOW C <br />' Depth to ground water was measured between 70 22 feet and 70 83 feet bsg on 29 August 2002 <br /> Ground water elevations at the site ranged from 43 57 feet below mean sea level (MSL) in well ' <br />' MW-4 to 44 42 feet below msl in well MW-2 Ground water elevation data are presented on Table 1 <br /> Monitoring data from the site was combined with monitoring well data collected on 29 August 2002 <br />' from the adjacent former Cherokee Truck Stop site (3535 East Cherokee Road) to determine the <br /> approximate ground water flow direction,which was determined to be toward the west The ground <br /> water gradient at the site was approximately 0 011 ft/ft (Figure 3) <br /> I <br /> 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br />' None of the target analytes were detected in samples collected from monitoring wells MW-2,MW-3 <br /> • and MW-4 and the active domestic well DW-1 <br /> 1 Advanced GeoEnvironmental,Inc <br /> 1 <br />