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Table 1 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 DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msi) (pg/L) (ug/L) (gglL) (UgIL) (erg/L} (PgIL) (pg/L) (mglL) Comments
<br /> MW-2 5/17/2001 -- 1083 2127 -1044 389[5] - 289 <2 5 456 <25 <2 1 5
<br /> 8/16/2001 - 1083 2257 -1174 470 - 73 <0 5 34 4 <2 29
<br /> 12/6/2001 - 1083 2355 -1272 <2,000 - 26 <20 <20 <20 <5 0* 1 3
<br /> 2/14/2002 - 1083 2202 -1119 1,800 - 300 31 60 54 <0 50 16
<br /> 6/13/2002 - 1083 2236 -1153 2,000 - 280 14 44 46 <2 5[10] 09
<br /> 8/22/2002 - 1083 2342 -1259 5,200 - 1,100 120 160 280 <0 50 1 3
<br /> 11/13/2002 - 1083 2442 -1359 620 - 110 <50 <5 0 <5 0 <50 -
<br /> 02/12/2003 P 1083 2469 -1386 400 - 30 1 1 34 3 5 <0 50 112
<br /> 05/29/2003 - 1083 - - -- -- - - - - -- - Not Sampled
<br /> 08/04/2003 P 1083 2345 -1262 430 R - 29 17 32 76 <0 50 33
<br /> 11/03/2003 P 1083 2448 -1365 650 - 74 <10 12 11 <10 149
<br /> 02/09/2004 P 1083 2426 -1343 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 107
<br /> 05/1012004 P 1083 2345 -1262 4,800 - 970 <50 <50 50 <50 206
<br /> 08/09/2004 P 1 1083 2456 -1373 1 5,300 - 980 38 J 70 1 140 <25 27
<br /> MW-3 2/16/1995 - 958 3624 -2666 37,000 -- 14,000 340 2,100 470 NA NA (53)
<br /> 5/17/1995 - 958 3149 -2191 39,000 - 13000 1,200 2,100 1,500 NA NA (53)
<br /> 8/15/1995 - 958 3106 -2148 31,000 -- 11,000 220 1,800 910 NA NA (53)
<br /> 11/29/1995 - 958 3125 -2167 41,000 - 10,000 350 1,900 860 NA NA (53)
<br /> 2/27/1996 - 958 2851 -1893 36,000 - 10,000 510 1,800 990 NA NA
<br /> 5/15/1996 -- 958 2682 -1724 40,000 - 12,000 690 2000 1,300 <500**[1] NA (53)
<br /> 8/22/1996 - 958 2735 -1777 53,000 - 14,000 2000 2,400 2,900 <500*[1] NA
<br /> 11/25/1996 - 958 2766 -1808 45,000 - 11,000 1,100 2,100 1,800 <500'[1] NA
<br /> 2/24/1997 -- 958 2355 -1397 38,000 - 9,200 460 1,800 1,200 <500*[1] NA
<br /> 5/19/1997 - 958 2342 -1384 38,000 - 9,800 620 1,900 1,100 <600*[1] NA
<br /> 8/21/1997 - 958 2449 -1491 36,000 - 9,500 910 2,000 1,500 <2,000**[i] NA (53)
<br /> 11/17/1997 - 958 2557 -1599 37,000 - 12,000 2 100 2 100 3,000 <1,000**[1] NA (54)
<br /> 2/9/1998 - 958 2307 -1349 32,000 9,700 510 2,000 2,700 <1,000*11] NA (54)
<br /> 5/22/1998 - 958 1913 -955 20,900 - 7,440 144 1,760 479 <100 NA (54)
<br /> 8/12/1998 - 958 1927 -969 13,600 -- 4,860 159 1,200 408 <20 NA (53)
<br /> 11/9/1998 -- 958 2036 -1078 26,100 -- 9,270 375 1,950 895 <2 NA (53)
<br /> 2/17/1999 -- 958 1979 -1021 31,300 - 9 820 595 2,340 1,570 846 NA (53)
<br /> 5/25/1999 -- 958 1995 -1037 24,000 - 9,320 356 2,220 1,070 107 NA (53)
<br /> 8/18/1999 - 958 2008 -1050 26,400 - 9,670 364 2,250 866 15 NA (53)
<br /> Report Date September 24, 2004 Page 4 of 12
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