SITE INFORMATION AND CORRESPONDENCE

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Sunland Gasoline March l4, 2000 208S Fremont Street, Stockton, California Page S Il. Report of Findings, Site Characterization The oxygenates Di-isopropyl Ether (D1PE), Ethyl tertiary-Butyl Ether (ETBE) and tertiary-Amyl Methyl Ether (TAME) were not detected in any sample above the reporting limits. The reporting limits were elevated due to the high levels of j contaminates present in the samples, therefore it is possible that these constituents exist in the soils underlying the site at levels below the minimum detectable levels set by the laboratory. i I 4. 2 Boring B-2 - Soil Analytical Data ' The laboratory data from B-2 indicate that a low level of soil contamination exists in the vicinity of boring B-2. TPH-G contamination is present throughout the soil column. Benzene contamination is only found in the 30' sample. MTBE is only found in the 25 ' and 30' samples. No other oxygenates were identified by ' laboratory analysis. Table 2 provides a summary of the laboratory analytical data for B-2. The laboratory data and Chain of Custody Reports can be found in Appendix C. Table 2 : B-2 Soil Analytical Data FT(@j TPH G Benzene Toluene E Benzene Xylenes MTBE 330, ,. ND 2S0`- 2,600 1 ,200!: ND ST ND d1 . ND X7 ND ND ND ND 5 S3 ND ND ND ND ND ND 6 9 7 3 31 5 B-2 30 2 ? 58 3501 78 380 A3 f : Units: mg/Kg - TPH-G; ug/Kg - BTEX, MTBE "ND" - None Detected at or above the reporting limits 4. 3 Boring B-Z — Groundwater Analytical Data The groundwater underlies this site at approximately fifty-eight feet (58 ') below ' ground level (b.g.l.). During the water sample collection process, the water in the boring rose to approximately forty-seven feet (47') b.g.l. The water sample did not contain any oxygenates except MTBE. A summary of the analytical findings is ' presented in Table 3 . 1