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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(ltg/L,)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date __(feet) (feet) (feet) (feet) Benzene- Toluene benzene Xylenes TPH-g MTBE
<br /> MW 10 06/27/90 861 3252 -23 91 000 9,700 4,800 2,400 5,300 51,000 --
<br /> MW 10 09/25/90 861 33 95 -2534 000 13,000 9,900 2,700 8,900 71,000 --
<br /> MW 10 12/19/90 861 3379 -25 18 000 16,000 16,000 3,300 11,000 81,000 --
<br /> MW 10 01/30/91 861 3424 -2563 000 18,000 15,000 2,600 9,900 62,000 --
<br /> MW 10 05/02/91 861 3424 -2563 000 6,900 5,700 2,100 5,900 27,000 --
<br /> MW10 07/16-17/91 861 35 13 -26 52 a 000 -- -- -- -- -- --
<br /> MW10 10/15/91 861 Dry
<br /> MW10 01/28/92 8 61 33 86 -2525 000
<br /> MW 10 04/30/92 861 3352 -2491 000 -- -- -- -- -- --
<br /> MW10 08/13/92 861 3500 -2639 000 -- -- -- -- -- --
<br /> MW10 10/08/92 861 Dry -- -- -- -- __
<br /> MW10 02/23/93 8 61 3285 -2424 000 1,100 17,000 3,300 15,000 91,000 --
<br /> MW 10 05/18/93 861 3132 -2271 000 6,200 9,200 1,400 5,300 44,000 --
<br /> MW 10 08/22/93 861 3170 -2309 000 7,800 15,000 1,700 7,900 66,000 --
<br /> MW 10 12/30/93 861 3079 -2218 000 -- -- -- -- -- --
<br /> MW10 02/17/94 861 3025 -2164 000 870 1,300 310 770 9,400 --
<br /> MW10 05/10/94 8 61 29 75 -21 12 000 1,400 3,800 470 1,700 21,000 --
<br /> MW 10 08/02/94 861 31 33 -2272 000 510 130 150 400 5,700 --
<br /> MW10 11/01/94 8 61 3176 -23 15 000 4,100 16,000 1,600 7,500 64,000 --
<br /> MW10 02/17/95 861 2929 -2068 000 1,300 4,400 780 2,500 21,000 --
<br /> MW10 05/11/95 861 2646 -1785 000 360 750 230 480 6,300 --
<br /> MW10 08/24/95 861 2758 -1897 000 150 1,100 190 590 3,100 --
<br /> MW10 10/19/95 8 61 2793 -1932 000 5 5 1 1 8 2 1 1 300 21
<br /> MW10 02/13/96 861 2567 -1706 000 1,600 15,000 1,400 6,500 64,000 --
<br /> MW10 04/18/96 8 61 2320 -1459 000 1,100 8,900 1,100 4,400 42,000 <500
<br /> MW10 08/08/96 861 2427 -1566 000 58 340 61 230 1,500 <50
<br /> MW10 11/04/96 8 61 2451 -1590 000 140 3,400 410 1,600 15,000 <250
<br /> MW10 02/03/97 8 61 2024 -1163 000 1,500 18,000 2,100 9,500 66,000 1,800
<br /> MW 10 05/08/97 729 1928 -1199 000 40 51 64 110 I,300 38
<br /> MW 10 08/26/97 729 21 11 -13 82 000 2 1 14 3 7 <0 5 63 <2 5
<br /> MW 10 11/11/97 7 29 2162 -1433 000 18 060 084 <0 5 <50 3 1
<br /> MW I0 03/03/98 729 1630 -9 01 000 360 7,800 1,300 5,000 23,000 940
<br /> MW10 03/03/98 729 <200*
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