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MITTELHAUSER <br /> corporation <br /> Unocal Corporation July 1992 <br /> Tracy, California Rev 0 <br /> Quarterly Monitoring & Sampling Report 1745TO01 wk1 <br /> TABLE 2 <br /> SUMMARY OF GROUNDWATER ANALYTICAL RESULTS <br /> WELL SAMPLING TPH-G BENZENE TOLUENE ETHYL- XYLENES <br /> NUMBER DATE BENZENE <br /> (ug/1) (ug/1) (ug/1) (ugll) (ug/1) <br /> MW-1 07/15/91 ND ND ND ND ND <br /> 08/15/91 NO ND NO ND ND <br /> MW-2 07/15191 ND ND NO NO ND <br /> 08/15/91 NO ND NO NO ND <br /> 12/11191 NO ND NO NO ND <br /> 03/13/92 NO ND NO ND ND <br /> 06/10/92 NO NO NO NO ND <br /> MW-3 07/15191 230 35 05 12 14 <br /> 08/15/91 550 110 NO 94 14 <br /> 12/11/91 390 70 11 60 46 <br /> 03/13/92 ND NO ND ND ND <br /> 06/10/92 200 39 ND ND 070 <br /> MW-4 07/15/91 50 ND ND 07 53 <br /> 08/15/91 NO ND ND ND ND <br /> 09/12/91 NO ND ND ND ND <br /> 12/11/91 NO ND ND ND ND <br /> 03/13/91 NO ND ND ND ND <br /> 06/10/91 NO ND ND ND ND <br /> Detection Limits 50 05 05 05 05 <br /> NOTES <br /> TPN-G = Total petroleum hydrocarbon as gasoline <br /> ND = Not detected at analytical detection limits <br />