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Table 2 GROUND WATER ELYATIONS AND SAMPLE ANALYTICAL RESULTS Ruiz Grocery Stare 4491 West Durham Ferry Road Tracy Califorrua Sample Collection TOC DTW GWE SPH TPH9 B T E X MTBE No Date (feet) (feet) (feet) (feet) (Kg/L) (jig//L) (NgIL) (per) (pg/L) (PS/L) MW-1 9/7191 9844 946 8898 000 140 23 13 <0 5 35 -- 10/13/91 98 44 1081 8763 000 -- --- --- --- --- --- 10/20/91 9844 1115 8729 000 --- --- --- --- -- -- 419192 9844 1493 8353 003 48 000 430 4 400 1 400 9200 --- 7/10/92 9844 1288 8556 000 45 000 57 1200 740 7 300 --- 117/93 9844 1632 8220 Oil --- -- --- --- --- - 4/7/93 9844 1558 8294 Oil -- --- --- --- - -- 12/30/93 9844 1498 8360 018 -- --- --- --- 3/9194 9844 1598 8259 017 --- --- - -- --- - 8/1/94 9844 1100 8744 000 - -- -- - -- 3/7/95 9844 1676 8180 016 - --- --- 10/19/95 --10/19/95 9844 1442 8407 007 -- --- --- 12119195 9844 1590 8262 0 10 -- -- -- --- --- --- 1/5/96(l) 9844 16 13 8233 003 6 600 <6 2 <6 2 <6 2 920 66 7/2196 9844 1455 8389 droplets --- --- --- -- -- --- 10/18196 9844 1463 8381 droplets --- --- --- --- --- --- 1/2J97 9844 1660 8184 sheen 79 000 870 2 600 4 100 27 000 <500 4/22/97 9844 1569 9275 droplets 38 000 370 660 l 800 11 000 <50 7/24197 9844 1277 8567 sheen 59 000 220 370 1500 12000 <100 11/14/97 9844 l5 35 8309 sheen 51 000 l 100 560 2200 17 000 <100 1/22198 9844 1629 8215 sheen 64 100 380 330 1 700 12 200 <250 511J98 9844 1545 --- sheen 89 000 l 100 250 1 500 16 000 7 7(5) 8120198 9892 1282 8610 000 69 000 210 57 590 9 300 <5 0(5) 11/4198 9892 1420 8472 sheen 64 000 340 850 520 7 900 <500(5) 313199 9892 1666 8226 000 12 000 34 18 76 830 <100 5113199 9892 1729 8163 000 1 500 <0 5 14 10 13 162 8113/99 9892 -1403 -8489 000 1900 23 100 79 290 <50 MW 2 9/4/91 9904 10 12 8892 000 6 400 710 700 130 1 300 --- 10/1-"191 9904 1122 87 82 000 -- -- -- --- -- 10/20/91 9904 1165 8739 000 --- --- --- -- -- 4/9192 9904 15 29 8375 000 2 400 1400 720 59 250 --- 7110192 9904 1333 8571 000 8 800 3 300 1 400 86 980 --- 1/7/93 9904 1599 8305 000 -- --- -- --- --- 417/93 9904 1620 8299 020 -- -- --- -- -- 12130193 9904 1531 8373 sheen 14 000 1 000 730 520 1 400 --- 3/9/94 9904 1633 8272 001 -- -- --- --- --- -- 8/1194 9904 1175 8729 000 — --- --- --- --- --- 3/7/95 9904 1691 82 13 droplets --- --- --- -- --- -- 10/19/95 9904 1486 8418 000 31 000 3 400 1 800 560 2 300 1200 12/19/95 9904 1629 8275 000 — --- --- --- --- -- 1/5/96(l) 9904 1661 8243 sheen 6 500 88 <6 2 <6 2 870 1 000 712/96 9904 15 13 8391 000 29 000 2 900 3 800 790 3 800 1 100 10/18196 9904 15 19 8385 sheen 27 000 3 000 3 600 1 000 5 700 3 500 1/22197 9904 17 It 8193 sheen 150 000 1200 1 200 440 1 500 1 300(2) 4122197 9904 1633 8271 sheen 27 000 3 400 4 500 1 100 3 600 1 200 7124/97 9904 1348 8556 sheen 27 000 1 400 3 500 660 4 100 930 11/14/97 9904 1587 83 17 sheen 21 000 1900 1 800 800 2000 2 500 1/22198 9904 1678 8226 sheen 20 900 1 700 1 300 610 1 400 l 300 5/12198 9904 1559 8352 sheen 25 000 2000 1 600 540 l 800 810(4) 8/20198 99 11 --- -- 11/498 -l1/4/98 99 11 15 25 8386 sheen 19 000 920 75 440 1 200 1 200(5) 3/3199 99 11 1694 8217 000 5 100 68 29 71 76 540 • 5/13199 99 11 1736 8175 000 800 23 <0 5 13 140 14 8113/99 9911 1445 8466 000 400 22 06 1 8 5 1 77 Page 1 of 4