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MITTELHAUSER <br /> corporation <br /> Unocal Corporation September 1992 <br /> Tracy, California Rev.0 <br /> Quarterly Monitoring & Sampling Report 1745T007.wkl <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) (ug/1) (ug/1) <br /> MW-1 ;0711,5191. ND ND NQ >... ND . ND <br /> 08/15/91 ND ND ND ND ND <br /> ::MW .2 <br /> SID ND <br /> 08/15191 ND ND ND ND ND <br /> 121fi191 Np .. ND ....ND:.. .;:NW:-. ND . <br /> 03/13/92 ND ND ND ND ND <br /> "- 0611;0192 ND. . ND N.D (VD ND <br /> 09/21/92 ND ND ND ND ND <br /> 071#;5J9� 35 <br /> 14 <br /> 08/15/91 550 110 ND 94 14 <br /> 03/13/92 ND ND ND ND ND <br /> :. <br /> -:06140192 .....:' 200 39 ND.: ND <br /> 09/21/92 240 86 1 ND 12 2.8 <br /> M1N-4 071:1'S191 5Q. SVD ND.'; 075 3 .< <br /> 08/15/91 ND ND ND ND ND <br /> ;0911:2191 . <br /> ND . N[7 <br /> 12/11/91 ND NO ND ND ND <br /> 03113192 ND . ND ND ND ND <br /> 06/10/92 ND ND ND ND ND <br /> Detection Limits: 50 0.5 1 0.5 1 0.5 0.5 <br /> NOTES: <br /> Results are in micrograms per liter(ug1l). <br /> TPM-G =Total petroleum hydrocarbon as gasoline. <br /> ND = Not detected at analytical detection limits. <br />