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TABLE 2 GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH Concentration ( /L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> V3 12/13/00 763 1745 -982 000 11 110 440 1,150 6,000 <2 5
<br /> V3 03/08/01 763 1670 -9 07 000 <25 640 2,100 8,900 40,000 <25
<br /> V3 06/21/01 763 1807 -1044 000 <0 5 3 1 20 34 6 1,500 30
<br /> V3 06/21/01 763 <5*
<br /> V3 09/20/01 763 1925 -l 1 62 000 9 8 18 46 132 950 <0 5
<br /> V3 12/04/01 761 1904 -1143 000 <50 260 960 4,200 19,000 <5*
<br /> V3 03/05/02 7 61 18 20 -10 59 000 -- -- __ __ --
<br /> V3 03/06/02 761 -- -- -- 260 484 1,390 5,280 13,900 h 102
<br /> V3 03/06/02 761 <10*
<br /> V3 06/11/02 7 61 1867 -1106 Sheen 720 117 548 2,000 8,300 h 100
<br /> V3 06/11/02 7 61 <2 5*
<br /> V4 05/02/91 938 32 10 -2268 0 05 31,000 58,000 5,700 29,000 200,000 --
<br /> V4 07/16-17/91 938 33 06 -2365 004 Not sampled- LPH
<br /> V4 10/15/91 938 33 74 -2434 003 Not sampled- LPH
<br /> V4 01/28/92 938 31 92 -22 54 Sheen 23,000 63,000 5,300 27,000 220,000
<br /> V4 04/30/92 938 31 48 -2209 0 01 Not sampled- LPH
<br /> V4 08/13/92 938 33 60 -24 17 0 07 Not sampled-LPH
<br /> V4 10/08/92 938 3420 -24 73 0 12 Not sampled- LPH
<br /> V4 02/23/93 938 3085 -21 47 000 15,000 35,000 4,300 23,000 150,000 --
<br /> V4 05/18/93 938 2935 -1997 000 13,000 47,000 5,900 28,000 240,000 --
<br /> V4 08/22/93 938 2960 -2022 000 9,400 42,000 3,900 21,000 150,000 --
<br /> V4 12/30/93 938 2926 -1988 000 10,000 36,000 4,800 26,000 150,000
<br /> V4 02/17/94 938 28 89 -1951 000 -- __ __
<br /> V4 05/10/94 938 28 54 -19 16 0 02 Not sampled- LPH
<br /> V4 08/02/94 938 2993 -2055 002 Not sampled- LPH
<br /> V4 11/01/94 9 38 30 34 -2096 000
<br /> V4 02/17/95 9 38 27 82 -1844 000
<br /> V4 05/11/95 938 25 12 -1574 Sheen
<br /> V4 08/24/95 938 -- --
<br /> V4 10/19/95 938 2685 -1747 Sheen
<br /> V4 02(13196 938 2474 -1536 Sheen
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