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Table 1 Pag0of 31 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton,CalLfomia <br /> i <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH G Benzene Toluene Ethylbenzene Xylenes MtBE DQ <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mgll <br /> E-9 1018191 Dry -- - - <br /> (cont) 1/22/92 1824 -- -1668 - -- - - -- -- <br /> 4122192 1745 -- -1589 0 79 3,600 170 10 50 120 <br /> 7129192 Dry -- -- - - <br /> 10/29/92 1719 - -1563 -- 8,900 480 32 440 1,100 <br /> 1127193 1610 -- -1454 1 09 12,000 390 25 310 730 <br /> 4/29/93 1419 -- -1263 1 91 12,000 270 <98 150 380 <br /> 8/5/93 1583 -- -1427 -164 16,000 370 22 220 460 <br /> 11/10/93 1618 -- -1462 -035 12,000 210 21 200 390 <br /> 3/21194 1551 - -1395 067 6,300 170 24 200 320 <br /> 6/27/94 1534 -- -1378 017 10,000 780 18 660 980 <br /> 9/29194 1636 - -1480 -102 8,800 430 14 470 630 <br /> 12/8194 1597 -1441 039 7,800 450 20 610 810 <br /> 3/8/95 1354 -1198 2 43 8,600 100 <20 230 260 <br /> 6/1/95 1202 -- -1046 152 24,000 550 38 870 2,000 <br /> 9111/95 14 22 -- -1266 220 150,000 1,700 7,600 3,000 14,000 <br /> 1215/95 1458 -- -1302 -036 45,000 960 1,500 1,000 3,200 <br /> 3/18/96 962 -- -806 4 96 8,800 290 130 240 490 - <br /> 6/18/96 1035 -- -879 -073 1,600 110 32 69 91 110 - <br /> 9/25/96 1282 -11 26 -247 2,800 130 <5 180 46 83 <br /> 1214196 1220 -- -1064 062 2,800 290 32 250 80 560 <br /> 3/19/97 NP 772 - -616 448 <50 <0 5 <0 5 <0 5 <0 5 <5 01 <br /> 615/97 NP 939 -- -783 -167 <50 <0 5 <0 5 <0 5 <0 5 85 0 2 <br /> 8/19/97 NP 1084 -- -928 -145 <50 <0 5 <0 5 <0 5 <0 5 <5 0 2 <br /> 11/25/97 NP 11 10 -954 -026 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 3/19198 P 4 80 -324 630 <50 <0 5 <0 5 <0 5 <0 5 320 0 9 <br /> 6124/98 NP 676 -- -520 -196 <50 <0 5 <0 5 <0 5 <0 5 <5 2 2 <br /> 9/10198 NP 859 -703 -183 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 12/17/98 NP 8 61 -- -705 -002 <50 <0 5 <0 5 <0 5 <0 5 150 <br /> 3/10199 NP 647 -- -491 214 <50 <0 5 <0 5 <0 5 <0 5 <5 37 <br /> 6122199 NP 8 39 -683 -192 <50 <0 5 <0 5 <0 5 <0 5 <5 2 9 <br /> 9113/99 NP 1007 -851 -168 <50 <0 5 <0 5 <0 5 <0 5 127 1 9 <br /> 12/16/99 NP 999 -- -843 008 <50 <05 <0 5 <0 5 <0 5 <25 37 <br /> 3/23/00 NP 5 31 -- -375 468 <50 <0 5 <0 5 <0 5 <0 5 <2 5 4 5 <br /> 6/21/00 NP 749 - 593 -218 <50 <0 5 <0 5 <0 5 <0 5 <2 5 01 <br /> 9113/00 NP 930 -- -774 -181 907 <0 5 <0 5 <0 5 <0 5 <2 5 406 <br /> 12/15/00 P 880 - -724 050 392 323 <0 500 540 100 812 1 10 <br /> 3/2/01 P 689 -533 191 439 710 <0 500 15 2 402 224 43 <br />