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Table 2 <br /> Groundwater Elevation and Analytical Data(ARCO) <br /> ARCO Senace Station#2133 <br /> 2908 Benjamin Holt Drive <br /> Stockton California <br /> Well Depth Product Groundwater Groundwater Ethyl Xylenes <br /> Welt Data Elevation to Water Thickness Elevation Elevation TPHS Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled tt,MSL 14 TOC tt (ft,MSL Change tt) (ugA) (u ) _(u ) (ugll (ugA) (uV) (mg/L <br /> E 9 2/12/1991 1780 1624 031 1$000 2 600 130 610 4 700 <br /> (cont) 2/25/1991 1876 -- 1720 096 — -- <br /> 4/2311991 1689 — 1533 187 — <br /> 7/1511991 dry — — — <br /> I0181i991 dry -- — — <br /> 1122/1992 1824 — 16 6B — <br /> 4/221t 992 1745 — 1589 079 3 600 170 to 50 120 <br /> 7129/1992 dry — — <br /> t0/29/1992 1719 — 15 63 8 900 480 32 440 1 100 <br /> 1/27/1993 1610 — 1454 109 12000 390 25 310 730 <br /> 4!2911993 1419 — 1263 1 91 12 000 270 <98 150 380 <br /> B/517993 1583 — 14 27 164 16 000 370 22 220 460 <br /> 11/1011993 1618 — 1462 -035 12 000 210 21 200 390 <br /> 3/21/1994 1551 — 1395 067 6 300 170 24 200 320 -- <br /> 6/2711994 1534 — 1378 017 10 000 780 18 660 980 <br /> 9/29/1994 1636 — 1480 1 02 8 800 430 14 470 630 <br /> 12/8/1994 1597 — 1441 039 7 B00 450 20 610 810 <br /> 3/8/1995 1354 — 1198 243 8 600 100 <20 230 260 <br /> 6/1/1995 1202 — 1046 1 52 24 000 550 38 870 2000 <br /> 911 1/1995 t4 22 -- 12 66 220 150 000 1 700 7 600 3 000 14 000 <br /> 121511995 1458 — 1302 -036 45 000 960 1 500 1 000 3200 — <br /> 3/18/1996 962 — -8 06 496 8 800 290 130 240 490 <br /> 6/18/1996 1035 -- 8 79 073 1 600 110 32 69 91 110 <br /> 9!2511996 1282 — 1126 2 47 2800 130 c5 180 46 83 <br /> 1214/1996 1220 — 1064 0 62 2 800 290 32 250 80 560 <br /> 819/1997 NP 7 72 — -0 t6 4 48 <50 <0 5 <0 5 4 5 <0 5 <5 01 <br /> 6/5/1997 NP 939 — 783 1 67 <50 <0 5 <0 5 -05 <0 5 85 02 <br /> 8/19/1997 NP 1084 — 928 145 <50 <0 5 4 5 <0 5 <0 5 <5 02 <br /> 11/25/1997 NP it t0 -- 9 54 -026 <50 <0 5 4 5 <0 5 <0 5 <5 <br /> 3119/1998 P 4 80 -- 324 630 <50 <0 5 <0 5 <05 <0 5 320 09 <br /> 6!2411998 NP 676 — 520 196 <50 <05 <0 5 <0 5 <0 5 <5 22 <br /> 9/10/1998 NP 8 59 — 703 1 M <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 101711998 NP 861 — 705 -002 <50 <0 5 <0 5 <0 5 <0 5 150 <br /> 3/10/1999 NP 647 -- -491 214 <50 4 5 <0 5 <0 5 <0 5 <5 37 <br /> 6/2 211 9 9 9 IJP 839 — -683 1 92 <50 <0 5 <0 5 <0 5 <0 5 <5 2 9 <br /> 9/13/1999 NP 1007 — 851 168 <50 <0 5 <0 5 <05 <0 5 127 1 9 <br /> 12116/1999 NP 9 99 — -843 008 <50 <0 5 <0 6 <0 5 <0 5 <2 5 37 <br /> 3123/2000 NP 531 — 3 75 4 68 <50 <0 5 <05 <0 5 <0 5 <2 5 45 <br /> 6121/2000 NP 749 5 93 2 1 8 <50 <0 5 <0 5 <0 5 <0 5 <2 5 0 1 <br /> 9/1312000 NP 9 30 -- 774 1 81 907 <0 5 <0 5 <0 5 <0 5 <2 5 406 <br /> 12!1512000 P 880 — 724 0 50 392 323 <0 500 540 IOD 812 1 10 <br /> 312/2001 p 689 — 5 33 1 91 439 710 <0 500 152 402 224 4 3 <br /> 511 0120 0 1 P 680 — 524 009 343 5 34 0 601 996 26 8 892 32 <br /> 812212001 P 959 -- -803 279 160 330 089 6 2 12 10 <br /> 1215!2001 P 8 83 — 727 0 76 240 4 3 <0 50 8 2 20 20 1 35 <br /> 3/1212002 P 702 — 5 46 1 61 230 4 8 <0 50 85 22 41 1 57 <br /> I IProledslARC012133\Tableslgwtables2133 xis Page 13 of 29 <br />