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' 14 June 2004 • AGE-NC Project No 99-0592 ' Page 2 of 3 opened and water was allowed to run until the pump turned on The samples were transferred Into ' laboratory-supplied 40-mL EPA-approved volatile organic analysis(VOA)vials containing 0 5 mL 18%hydrochloric acid as a sample preservative The sample containers were then labeled with the well designation, date, time and the sampler's Initials The samples were transported in a chilled ' container under chain-of-custody to Cal Tech Environmental Laboratories (CTEL), a California Department of Health Services(DHS)-certified laboratory, for analysis The samples were analyzed for ' Total petroleum hydrocarbons quantified as gasoline (TPH-g) In accordance with EPA Method 8015M, • Benzene, toluene, ethylbenzene and total xylenes (BTEX) and methyl tertiary butyl ether (MTBE) in accordance with EPA Method 8021 or EPA Method 8260B, and ' Fuel additives di-isopropyl ether (DIPE), ethyl tertiary-butyl ether(ETBE), MTBE, tertiary amyl methyl ether(TAME), tertiary butanol (TBA),methanol, ethanol,`1,2-dibromoethane ' (EDB) and 1,2-dichloro ethane (1,2-DCA) in accordance with EPA Method 8260B 10 3.0. FINDINGS Ground water elevation, flow direction, and gradient were determined from field data collected on 1 12 March 2004 Laboratory analysis of ground water samples were used to quantify the impact to ground water 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION ' On 12 March 2004, depth to ground water was measured between 61 70 feet and 62 41 feet below the top of the well casings, ground water elevations at the site ranged from 34 62 feet below mean ' sea level (MSL) in MW-1 to 35 40 feet below MSL in well MW-4 The ground water flow was directed toward the northeast with a hydraulic gradient calculated at approximately 0 0010 foot/foot ' Ground water elevation data from well MW-1 was not used to determine the gradient for the March monitoring event, this well is screened at a different Interval than wells MW-2 through MW-4 Depth to water and ground water elevations are summarized in Table 1 Monitoring data from MW- 2, MW-3 and MW-4 was combined with monitoring data collected from the adjacent Cherokee Truck Stop property to determine an approximate regional ground water flow direction Figures 3 and 4 illustrate the contoured ground water elevations I Advanced GeoEnvironmental,Inc