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December 16, 1992 Az- <br /> Unocal Service Station No 6981, Stockton, California Working To Restore Nature <br /> TABLE 7 <br /> HYDROCARBON CONCENTRATIONS IN GROUND-WATER SAMPLES <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> (page 3 of 4) <br /> Sample Ethyl- Total <br /> Number Date TPHg Benzene Toluene benzene Xylenes <br /> W-51-MW5 02/22/90 3,600 77 16 <0 50 17 <br /> 10/18/90 NS NS NS NS NS <br /> 11/19/90 NS NS NS NS NS <br /> 12/27/90 NS NS NS NS NS <br /> 01/28/91 NS NS NS NS NS <br /> 04/02/91 NS NS NS NS NS <br /> 07/18/91 NS NS NS NS NS <br /> 09/30/91 NS NS NS NS NS <br /> 11/14/91 NS NS NS NS NS <br /> 03/09/92 NS NS NS NS NS <br /> 07/30/92 NS NS NS NS NS <br /> • 09/08/92 NS NS NS NS NS <br /> 10/22/92 NS NS NS NS NS <br /> W-52-MW6 03/09/92 <50 <05 <05 <05 <05 <br /> MW-6** 07/30/92 410* <05 <05 <05 <05 <br /> W-0908-MW-6 09/08/92 65 28 <05 <05 0 79 <br /> MW-6** 10/22/92 180 22 08 <05 079 <br /> W-52-MW7 03/09/92 13 000 1,400 13 99 190 <br /> MW-7** 07/30/92 950 320 19 57 25 <br /> W-0908-MW7 09/08/92 550 61 4 1 22 92 <br /> MW-7** 10/22/92 240 35 19 26 32 <br /> W-50-MW8 03/09/92 860 20 23 12 50 <br /> MW-8** 07/30/92 <50 17 <05 <05 <05 <br /> W-0908-MW8 09/08/92 <50 19 <05 <05 0 58 <br /> MW-8** 10/22/92 <50 <05 <05 08 <05 <br /> W-56-MW9 08/19/92 <50 <05 <05 <05 <05 <br /> MW-9** 10/22/92 <50 <05 <05 <05 <05 <br /> See notes on page 4 of 4 <br /> 38032-10 <br />