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• Groundwater Sampling One monitoring well was sampled on March 29, 2001, monitoring well MW-1 (inadvertently marked MW-3 in the attached field sheet and chemical analysis reports) The well was purged using calculated well volume based upon the depth to water in the casing Depth to groundwater measurements were made to the nearest one-one hundredth of one foot, and the well was checked for the presence of separate phase product The well was purged to remove stagnant water in the well casing As each purge volume was removed, measurements of pH, electrical conductivity and temperature were taken until these parameters stabilized over two purge volume removals, which is interpreted to represent aquifer water entering the casing The well was allowed to recover to about 80% of the initially measured water level, after which the sample was collected The water sample was carefully collected with a clean bailer and poured into the appropriate laboratory prepared container with minimum cavitation The water sample was labeled, logged onto a chain-of-custody form, and placed in a chilled ice chest Upon completion of well sampling, the well was sealed with an expansion plug and well box cover bolted down Groundwater Gradient Water levels were measured in the Tracy Auto well in Grant Line Avenue and an additional water level measurements were collected on the Gemelos Property and More for Less Station Property (see Figure 1) Water level data was collected from the wells on December 21, 2000 The groundwater flow gradient is flowing north-northeasterly at a calculated gradient of 0 006 Water levels have risen since the previous sampling Chemical Analysis One (1) groundwater sample was analyzed at a State certified analytical laboratory from the exploratory boring These samples were chemically analyzed for the following Total Petroleum Hydrocarbons as Gasoline (TPHG), Benzene (B), Toluene (T), Ethylbenzene (E) and Xylene (X), Methyl-tert-butyl-ether (MTBE) and fuel oxygenates, 1,2- Dichloroethane and Ethylene Dibromide using EPA Methods 3510/8015, 8020, 8240 and 8260 The analyses were performed on an "normal" turnaround The results are attached and presented in Table 2 below The contract sampler inadvertently marked the sample "MW-3" although the proper well number for Tracy Auto Stereo monitoring well designation is MW-1 Page 2