i
<br /> Table 'I
<br /> Groundwater Elevation and Analytical Data
<br /> Former ARCO Service Station No 2168
<br /> 441 W Charter Way, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date P! Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE %NA (48)
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pgll-) (pg1L) (pg/L) (!rg/L) (pg/L) {pg1L) (pglL) omments
<br /> MW-7 8/15/1995 -- 888 3041 -2153 30,000 - 1,400 4,400 490 2,800 NA
<br /> 11/29/1995 - 888 3056 -2168 45,000 - 2,100 6,400 800 3,600 NA 2/27/1996 - 888 27 75 -18 87 40,000 -- 2,700 7,800 740 4,000 NA 5/1996 -- 888 2613 -1725 38,000 - 2,500 7300 790 4,100 <500*[1]8!2211996 8 88 2667 -1779 52,000 - 4,400 9,900 790 4,600 <500*[1]
<br /> 11/25/1996 8 88 26 87 -17 99 52 000 - 3,500 9 100 810 4,700 <600**[1] NA
<br /> 2/24/1997 -- 8 88 22 89 -1401 25,000 - 1 300 3,700 500 2,200 <700"111NA
<br /> 5/19/1997 - 8 88 22 77 -i3 89 19,000 -- 970 2,800 390 1,700 <300*[1] NA
<br /> 8/21/1997 -- 8 8$ 23 89 -15 01 19,000 - 1 10Q 2,600 490 2 000 <500"*[i] NA (47)
<br /> 11/17/1997 -- 8 88 24 91 -16 03 2,300 - 120 190 20 100 <5011] NA (48)
<br /> 2/9/1998 - $88 22 21 13 33 21,000 -- 1,100 2,800 660 2,70D 4,400[1] NA (47)
<br /> 5/22/1998 8 88 1836 -948 9 580 -- 593 919 282 942 <1D0 NA {47)
<br /> 8/12/1998 - 888 1857 -969 5,690 - 289 460 197 628 <2 NA (47)
<br /> 11/9/1998 888 1968 -1080 4,970 - 406 612 119 520 <2 NA (47)
<br /> 2/17/1999 - S 88 18 90 -10 02 42 300 -- 3,650 8 230 942 5,030 <2 NA (47)
<br /> 5/25/1999 - 8 88 18 31 -9 43 9 910 944 1 910 287 1,550 <2 NA (35)
<br /> 8/18/1999 - 888 1938 -1050 10 400 - 681 E905F,
<br /> 331 1 500 <2 NA (47)
<br /> 12/17/1999 888 2030 -1142 1 790 -- 833 966 8 08 <2 NA {47) [2]
<br /> -2122/2000 8 88 1936 -1046 2,240 15 9 14 9 39 9 <2 NA {47)
<br /> 6/2212000 - 888 1799 -911 33 900 -- 6,560 1,090 4,610 <2 NA (41)
<br /> 8/30/2000 - 888 1926 .1038 1 590 -- 222 49 102 <2 NA
<br /> 11/21/2000 888 1996 -1108 2,260161 - 106 768 542 216 <2 NA
<br /> 2/15/2001 - 8 88 1997 -1109 18,400[7] - 1 400 2,530 656 2,420 <2 12
<br /> -i/17/2001 - 8 88 19 22 -1034 2 320[5) -- 20 7 119 407- 991 <10 0 8
<br /> 8/16/2001 -- 888 2059 -11 71 2200 - 30 14 49 95 <2 0 6
<br /> 12/6/2001 8 88 2163 .1275 6,800 580 270 210 930 <5 0* 0 9
<br /> 2/14/2002 888 2003 -11 15 62[8] - <0 50 <0 50 0 53 <0 50 <0 50 2414 4
<br /> 6/13/2002 - 8 88 20 35 11 47 1,400[8] -- 2 9 4 12 13 <0 50 1 4
<br /> 8/22/2002 - 888 21 38 1250 1 400 - 11 <50 15 10 <0 50 0 9
<br /> 11/13/2002 - 8 88 22 33 -13 45 1,400 - 4D <10 18 34 <10---
<br /> 020212003 _ 8 88 2316 -1428 820 - <50 <50 <5 0 <50 <50
<br /> 05/29/2003 P 8 88 20 80 -11 92 380 <0 50 <0 50 1 9 1 3 <1 0 5 02
<br /> 08/04/2003 P 888 2141 -1253 620 - <050 <0 50 <0 50 <0 50 <0 50 198
<br /> I
<br /> Page 9 of 12
<br /> Reporl Date July 15,2004
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