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Mr Cecchim August 24, 1993 - Page 2 disposable nylon cord. The filled bailer was retrieved, emptied, then filled again. The ground water from this bailer was then decanted into appropriate laboratory supplied glassware The containers were filled such that no headspace was present in the samples in order to avoid volatilization of the sample. The filled sample containers were then labeled and placed in a cooler under ice for transport under chain of custody documentation to ESE's California certified laboratory in Peoria, Illinois ESTE then documented the sampling procedures on the attached Well Sampling Field log(Attachment A). Purge water was stored in labeled drums and remains on site in a secure area of the site. A trip blank consisting of deionized water, was provided by the ]ESE laboratory as a check on sample handling procedures. The trip blank accompanied the samples to the laboratory. The ground water sample from UST-1 and accompanying trip blank were analyzed at the laboratory for: Total Petroleum Hydrocarbons (TPH) as gasoline and diesel using EPA Methods 3350.8015 and 5030/8015 Modified, and o Benzene, Toluene, Ethylbenzene, and Xylenes (BTEX) using EPA Method 8020. The two ground water supply wells, designated "small well" and 'big well", were sampled by Mr. Robert Cecchini on June 17, 1993 at the request of the PHS-ED. Theses samples were submitted to and analyzed by Fruit Growers Laboratory (IFGL) of Stockton, California for a the following analysis: G TPH - as gasoline and diesel using EPA Method 8015 modified, Purgeable Halocarbons using EPA Method 601, G Colliform, C Gross Alpha, General Mineral Analysis, O Color, Odor and Turbidity, Inorganics - drinking water, G volatile halogenated organic - drinking water, and O Pesticides and PCBs - drinking water. Findings The ground water levels in wells SI-1, SI-2, SI-3 and UST-1 on July 28, 1993 were approximately 82 feet below the top of casing. No free product was observed. ESE noted that the interior of well UST-1 was clean and free of surface leakage. Table 1 - Ground Water Monitoring Well Measurements tabulates water level measurements and elevation calculations for these wells and Figure 2 - Relative Ground Water Elevation July 28, 1993 shows these data in map view. The ground water elevation data were not able to be contoured because of the extremely flat surface projected. a