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i • • <br /> TABLE I GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942, 4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Casing Depth Groundwater LPH _Concentration (pg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (feet msl) (feet) (feet ms]) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> I <br /> MW2 02/29/00 749 1442 -6 93 000 <1 <1 <1 <1 <50 <1 <br /> 05/16/00 749 1445 -696 000 <1 <1 <1 <1 <50 <1 <br /> 09/11/00 749 1682 -933 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> 12/13/00 749 1667 -9 18 000 2 6 1 5 9 69 <0 5 <br /> 03/08/01 749 1581 -8 32 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> 06/21/01 749 1715 -966 0.00 <0 5 <0 5 <0.5 <0 5 81 12 <br /> 06/21/01 749 <5* <br /> M W 3 01/87 9 14 -- -- -- 17 640 -- 400 32,000 -- <br /> 07/16/87 9 14 1926 -10 12 000 830 600 190 436 1,700 -- <br /> 04/11/88 9 14 2243 -1329 000 450 970 210 860 4,600 -- <br /> 09/13/88 9 14 2495 -15 78 004 Not sampled- LPH <br /> 11/16/88 9 14 2327 -14 13 000 <250 3,200 1,900 8,600 61,000 -- <br /> 02/09/89 9 14 2541 -1627 Sheen Not sampled- LPH <br /> 05/31/89 9 14 2643 -17 18 0 15 Not sampled- LPH <br /> 08/17/89 9 14 28 12 -1877 0 15 Not sampled - LPH <br /> 12/19/89 9 14 2849 -1926 0 13 Not sampled - LPH <br /> 03/21/90 9 14 2851 -1929 0 i 1 Not sampled - LPH <br /> 9 14 Well dry since 05/17/90 <br /> 02/17/94 9 14 2892 -1978 000 -- -- -- -- -- -- <br /> 05/10/94 9 14 2914 -2000 000 -- -- -- -- -- -- <br /> 08/02/94 9 14 Well dry -- -- -- -- <br /> 11/01/94 9 14 Well dry -- -- -- -- <br /> 02/17/95 9 14 Well dry -- -- -- -- -- <br /> 05/11/95 9 14 25 59 -1645 000 97 24 42 1,300 5,600 -- <br /> 08/24/95 9 14 2449 -15 35 000 45 5 9 19 440 2,600 -- <br /> 10/19/95 9 14 Well dry -- -- -- -- -- -- <br /> g pro}ects173942lnmasterlwp1g6OI\3942gw x[s Page 6 of 46 <br />