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Tab <br /> Groundwater Monitoring ll�nd Analytical Results <br /> Chevron Service Station#9-0557 <br /> 139 South Center Street <br /> Vertical Measurements are in feet. Stockton,California Analytical p (ppb) <br /> cal resulEs are in arts per billion b <br /> We11. Graund NIA <br /> DATE Head Water. T..4 paha TIP]& Benzene Toluene Ethyl- Xylenes MTBE Fecal <br /> Elev. Elev. Wxter'; Gilaulirte Benzene Coliform' <br /> MW-5 <br /> 11/10/92 12.09 -35.56 47.65 - ND ND ND ND ND -- - <br /> 02/16/93 12.09 -33.88 45.97 - ND ND ND ND 0.7 -- -- <br /> 05/17/93 12.09 -31.57 43.66 - 600 12 33 18 110 -- -- <br /> 08/17/93 12.09 -31.54 43.63 -- 145 1.0 ND 0.9 0.8 --11/22/93 12.08 -31.93 44.02 - 180 9.0 17 3.0 10 -- -- <br /> 02409/94 12.08 -31.73 43.81 - 290 ND 0.9 2.0 2.0 -- -- <br /> 05/27/94 12.08 -30.69 42.77 -- 160 0.5 1.1 2.2 1,3 -- <br /> 08/05/94 12.08 -30.95 43.03 -- 320 ND 1.5 1.8 0.8 -- -- <br /> 11/22/94 12.08 -31.90 43.98 -- 59 <0.5 <0.5 1.0 0.5 - -- <br /> 02/24/95 12.08 -28.21 40.29 -- 540 2.5 IA 4.6 2.4 -- -- <br /> 05/16/95 12.08 -24.43 36.51 -- 420 0.81 <0.5 1.8 3.6 -- -- <br /> 08/03/95 12.08 -23.67 35.75 -- 680 7.1 4.6 <0,5 7.0 -- -- <br /> 11/16/95 12.08 -23.50 35.58 - 540 20 1.3 2.8 1.7 -- - <br /> 02/22/96 12.08 -21.78 33.86 - 760 40 7.2 <2.5 13 -- -- <br /> 05/07/96 12.14 -19.36 31.50 - 530 81 5.0 5.2 2.6 15.00 -- <br /> 08/21/96 12.14 -19.75 31.89 -- 330 23 <0.5 1.6 1.1 19.00 -- <br /> 09/24/96 12.14 -19.83 31.97 - -- -- -- -- - -- -- <br /> 11/06/96 12.14 -19.93 32.07 - 880 62 2.0 <1.0 7.5 10.00 -- <br /> 02/27/97 12.14 -15.03 27.17 - 2000 38 2.2 <1.2 18 18.00 -- <br /> 05/20/97 12.14 -15.54 27.68 -- 1700 62 <2.5 6.5 13 <12 - <br /> 09/02/97 12.14 -16.32 28.46 - 800 28 1.1 4,3 5.5 <2.5 -- <br /> 11/24/97 12.14 -16.76 28.90 ** 560 17 <2.0 <2.0 8.4 <10 -- <br /> 02/11/98 12.14 -14.16 26.30 - 1000 34 5.7 3.1 14 <2.5 -- <br /> 06/09/98 12.14 -10.65 22.79 *** 98 0.58 1.1 <0.5 <0.5 <2.5 -- <br /> 07/30/98 12.14 -10.61 22.75 -- 1100 35 7.3 6.7 20 100.00 -- <br /> *•Oxygenates by EPA 8260 and Methanol by EPA 8015 were not detected;see lab report for detection limits. <br /> ***Oxygenates by EPA 8260 were not detected;see lab report for detection Iimits. <br /> 9-0557.xis/#386843 9 As of 08/14/00 <br />