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<br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH _ Concentration(pg/L)
<br /> Well Elevatton to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> RW 1 06/29/04 768 -- -- -- 102 85 7 264 335 3,520 h 367
<br /> RW I 06/29/04 768 <0 5*
<br /> RW 1 09/27/04 768 20 83 -13 15 000 134 939 217 304 4,300 h 816
<br /> RW I 09/27/04 7 68 <0 5*
<br /> R W 1 12/01/04 7 68 2048 -1280 000 -- -- ._ -- -_ --
<br /> RW I 12/02/04 768 -- -- -- 110 978 272 345 4,060 h 436
<br /> RW 1 12/02/04 768 <0 5*
<br /> RW 1 03/24/05 768 1860 -1092 0 00 565 295 135 910 1,810 h 3 0
<br /> RW i 03/24/05 768 <0 5*
<br /> RW1 06/22/05 7.68 1857 -1089 000 -- -- -- -- -- --
<br /> RW1 06/23/05 768 -- -- -- 80.9 54.4 195 195 3,390 h 287
<br /> RW1 06/23/05 7 68 <1*
<br /> RW2 05/22/90 8 13 2940 -2127 000 2,000 6,100 1,800 10,000 51,000 --
<br /> RW2 09/25/90 8 13 3079 -2266 000 1,000 5,200 1,600 8,600 33,000 --
<br /> RW2 12/19/90 8 13 30 62 -2249 000 940 3,500 860 5,200 16,000 --
<br /> RW2 01/30/91 8 13 3108 -2295 000 580 2,300 580 3,600 13,000 --
<br /> RW2 05/02/91 8 13 3097 -2284 000 1,600 3,400 1,600 7,900 32,000 --
<br /> RW2 07/16-17191 8 13 3195 -23 82 000 600 1,900 730 3,900 21,000 --
<br /> RW2 10/15/91 8 13 3253 -2440 000 510 2,700 720 3,300 22,000 --
<br /> RW2 01/28192 813 3076 -2263 0 00 260 1,200 590 2,500 17,000 --
<br /> RW2 04/30/92 8 13 Not accessible -- -- -- -- --
<br /> RW2 08/13/92 8 13 3247 -2434 000 130 630 280 1,100 8,500 --
<br /> RW2 10/08/92 8 13 3303 -2490 000 130 630 250 1,400 11,000 --
<br /> RW2 02/23/93 8 13 2971 -2158 000 130 580 1,000 2,000 9,700 --
<br /> RW2 05/18/93 8 13 2830 -20 17 000 420 1,400 750 2,400 16,000 --
<br /> RW2 08/22/93 8 13 2857 -2044 000 330 1,100 620 1,900 15,000 --
<br /> RW2 12/30/93 8 13 2788 -19 75 000 620 870 690 2,600 26,000 --
<br /> RW2 02/17/94 8 13 2749 -1936 000 170 140 150 540 5,600 --
<br /> RW2 05/10/94 8 13 27 17 -1904 000 230 750 410 1,100 10,000 --
<br /> RW2 08/02/94 8 13 28 65 -20 52 000 -- -- -- --
<br /> RW2 11/01/94 8 13 28 99 -2086 000 -- -- -- -- --
<br /> RW2 02/17/95 8 13 2644 -1831 000 220 680 460 1,400 11,000 --
<br /> RW2 05/11/95 8 13 2383 -1570 000 350 670 560 1,500 12,000 --
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