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Table 1
<br /> Groundwater Elevation and Anaiytical Data -
<br /> Former ARCO Service Station No 2168
<br /> 441 W Charter Way, Stockton CA
<br /> Top of Depth to Water Level Ethyl- Total
<br /> Well Date PI Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes M IBE DO
<br /> Number Sampled NP Elevation (feet bgs) (feet msl) (aglL) (pg1L) (pg1L) (lrglL) (pg1L) (pglL) (pglL) (mg1L) Comments
<br /> MW-6 2/17/1999 - 893 1879 -986 53,500 - 9,870 2,720 1,540 8,320 <2 NA (45)
<br /> 5/25/1999 - 893 1812 -919 43,900 -- 7 020 1,880 1,520 8,290 <2 NA (45)
<br /> 8118/1999 -- 8 93 1926 -1033 40,900 - 6,260 1,590 1,470 7,460 4 78 NA (45)
<br /> 12/17/1999 - 8 93 20 08 -11 15 4,080 -- 536 149 122 75fi <2 NA (45),[2]
<br /> 2122!2000 -- 8 93 19 29 -10 36 38,200 -- 8,430 1,800 1,330 6,390 <2 NA (45)
<br /> 6/22/2000 893 1815 -9 22 2,150 - <2 51 14 9 14 1 <2 NA (48)
<br /> 8/30/2000 -- 893 1912 -1019 37,900 - 5,290 1,260 1,280 5,570 <2 NA
<br /> 11!2112000 - 893 1983 -1090 30,100[5] - 5,120 1,080 1,150 5,150 <2 NA
<br /> 2/15/2001 -- 8 93 19 72 -1079 58,200[6] -- 5,930 1,400 1 540 5,820 <2 1 1
<br /> 5/17/2001 -- 893 1911 -1018 31,700[5] -- 5,210 1,090 1,300 5,020 <40 09
<br /> 8/16/2001 - 8 93 20 50 -11 57 39,000 - S,D00 1 300 1 600 5,500 <50* 07
<br /> 12/6/2001 - 8 93 21 50 -12 57 28 000 - 5,800 <100 1,300 4,800 <100* D 6
<br /> j 2/14/2002 - 893 1980 -10 87 32,000 4,100 1,100 1,400 4,800 <50[10] 0 S
<br /> 6113!2002 - 8 93 2020 .1127 34,000 -- 3 600 1,100 1,30Q 4,000 <25j10] 09
<br /> 8/22/2002 - 893 2123 -1230 27,000 -- 5,000 950 1,100 4 500 <25 1 1
<br /> 11/13/2002 8 93 22 23 -13 30 37,000 - 5,000 900 1,400 4,600 <100 -
<br /> 02/12/2003 P 893 2248 -1355 31,000 -- 4,200 900 1,200 5,700 <50 101
<br /> 05!2912003 P 893 2058 -1165 26,000 - 4,000 1,000 1,100 5,200 <120 4 67
<br /> 08/04/2003 P 893 2126 -12 33 27,000 -- 4,100 870 730 6,000 <50 1 48
<br /> 11/03/2003 P 8 93 2222 -1329 220 R - <25 R <25 R <25 R <25 R <2 5 R 211
<br /> 0210912004 P 893 2204 -1311 25,000 - 3,900 740 670 4,800 <50 149
<br /> MW-7 12/1/1994 - 888 38 87 -2999 24,000 - 800 5,700 560 4,500 NA NA
<br /> 2/16/1995 - 888 - -- - - - -- -- - -- - Well Inacoessible
<br /> 5/17/1995 -- 888 3050 -2162 40,000 - 2,300 8,200 820 4,800 NA NA
<br /> 8/15/1995 -- 888 3041 -21 53 30,000 - 1,400 4 400 490 2,800 NA NA (48)
<br /> 11/29/1995 - 8 88 3056 -21 68 45,000 2,100 6,400 800 3,600 NA NA (48)
<br /> 2127/1996 - 888 2775 -18 87 40,000 -- 2 700 7,800 740 4,000 NA NA
<br /> 5/15/1996 - 8 88 26 13 -17 25 38 000 2,504 7 300 790 4,100 <500"[1] NA (48}
<br /> 8/22/1996 -- 888 2667 -1779 52,000 - 4 400 9,900 790 4 600 <500*[1] NA
<br /> 11/25/1996 - 888 2687 -1799 52,000 - 3 500 9,10D 810 4,700 <600*"[1] NA
<br /> 2/24/1997 -- 8 88 22 89 -14 01 25,000 -- 1,300 3,700 500 2,20D <700'*[1] NA
<br /> 5/19/1997 - 8 88 22 77 ±tl3 89 19,000 970 2,800 390 1,700 <300"[1] NA
<br /> 8/21/1997 -- 888 2389 5 01 99,000 - 1 100 2,600 490 2,000 <500""[1] NA (47)
<br /> Page 8 of 12
<br /> Report Date April 21,2004
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