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Desert Petroleum 2- 17 August 1993 <br /> Table 1. Summary of Ground Water Sampling Results* <br /> Well # Date Sampled TPH-G Benzene Toluene Ethyl Benzene Xylene <br /> (PPM) (Ppb) (ppb) (Ppb) (ppb) <br /> 1 13 May 1988 <0.2 13 38 5 160 <br /> 1 June 1988 4.0 41 71 610 164 <br /> 5 July 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 11 August 1988 <0.2 0.6 0.5 <0.5 4.1 <br /> 23 May 1990 <0.5- <0.3 <0.3 <0.3 <0.9 <br /> 18 March 1993 <0.5 <0.3 <0.3 <0.3 <0.9 <br /> 2 13 May 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 1 June 1988 <0.2 <0.5. <0.5 <0.5 <0.5 <br /> 5 July 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 11 August 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 23 May 1990 <0.5 ;<0.3 <br /> 0.3 <0.3 <0.3 <0_9 <br /> 18 March 1993 <0.5 <0.3 <0.3 <0.9 <br /> 3 13 May 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 1 June 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 5 July 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 11 August 1988 <0.2 <0.5 <0.5 <0.5 <0.5 <br /> 23 May 1990 <0.5 <0.3 <0.3 <0.3 <0.9 <br /> 18 March 1993 <0.5 <0.3 <03 <0.3 <0.9 <br /> 4 18 March 1993 <0.5 --,0.3 <0.3 <0.31 <0.9 <br /> *All well samples were also non-detect(detection limit 50 ppb) for organic lead on 18 March 1993 <br /> Based on the information provided, Board staff has determined that appropriate response actions <br /> have been completed, that acceptable remedial practices were implemented and at this time, no <br /> further investigation, remedial or removal action or monitoring is required at the former Desert <br /> Petroleum Service Station, 950 11th Street, Tracy, San Joaquin County. <br /> Nothing in this determination shall constitute or be construed as a satisfaction or release from <br /> liability for any conditions or claims arising as a result of past, current, or future operations at this <br /> location. Nothing in this determination is intended or shall be construed to limit the rights of any <br /> parties with respect to claims arising out of or relating to deposit or disposal at any other location of <br />