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I 27 October 2006 AGE-NC Project No 04-1168 IPage 2 of 4 ' • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA Methods 8015M, • Benzene,toluene, ethylbenzene and total xylenes (BTEX) in accordance with EPA Method I8260B, and • Fuel additives di-Isopropyl ether(DIPE), ethyl tertiary-butyl ether(ETBE),methyl tertiary- butyl. ether (MTBE), tertiary-amyl methyl ether (TAME), tertiary butanol (TBA), 1,2-dichloroethane (1,2-DCA) and ethylene dibromide (EDB) in accordance with EPA Method 8260B ' 23 NON-HAZARDOUS WASTE DISPOSAL On 31 August 2005, Slaby Environmental, Inc of Borrego Springs, California manifested and transported 18 drums of non-hazardous soil cuttings, weighing 8,136 pounds, to L&D Landfill located at 8635 Fruitridge Road, Sacramento, California for disposal The Non-hazardous Waste Manifest is provided in Appendix E 3.0. FINDINGS Ground water elevation, flow direction, and gradient were determined from field data The contaminant impact to ground water was quantified from laboratory analytical data I 31 GROUND WATER GRADIENT AND FLOW DIRECTION ' At the time of the November 2005 sampling event, depths to ground water ranged from 57 76 (MW-2)to 58 64 feet(MW-3)below the tops of the well casings Ground water elevations at the site ' averaged approximately 33 82 feet below MSL (Table 1) During this monitoring event,the ground water levels in wells MW-I through MW-3 were below the tops of the well screens, indicating that Ithe wells are properly screened and representative of shallow ground water conditions Ground water flow was inferred to be flowing towards the southwest under an average hydraulic gradient of approximately 0 014 foot/foot (ft/ft) Figure 3 illustrates the contoured ground water elevations as measured on 04 November 2005 I Advanced GeoEnvironmentai,Inc