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Table 1 ,
<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 msl) (Erg/L) W/L) (ug/L) Wg/L) (Erg1L) (ugIL) W91L) (mg/L) Comments
<br /> MW-1C 11/13/2002 - 1021 2438 -1417 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 -
<br /> 02/12/2003 -- 1021 -- -- -- - -- - - - - - Not Sampled
<br /> 05/29/2003 - 1021 i - - - - - - - - -- - Not Sampled
<br /> 08/04/2003 P 1021 2330 -1309 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 1 1
<br /> 11/03/2003 P 1021 24 35 -1414 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 156
<br /> 02/09/2004 P 1021 2410 -1389 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 213
<br /> 05/1012004 P 1021 2348 -1327 <50 - <0 50 <0 50 <0 50 <0 50 <0 50 123
<br /> 08/0912004 P 1 10 21 1 2475 1 -1454 1 <50 I - I <0 50 1 <0 50 1 <0 50 <0 50 <0 50 3 0
<br /> MW-2 2/16/1995 - 1083 3748 -2665 36,000 - 6,300 4,600 610 2,700 NA NA (53)
<br /> 5/17/1995 -- 1083 - - -- -- -- - - - - - Well Inaccessible
<br /> 8/15/1995 - 1083 3245 -2162 20,000 - 3,500 2,000 280 1,300 NA NA (53)
<br /> 11/29/1995 - 1083 3262 -2179 30,000 -- 3,800 2,700 380 1,800 NA NA (53)
<br /> 2/27/1996 - 1083 2987 -1904 - - -- - - - - - Well not sampled
<br /> 5/15/1996 - 1083 2816 -1733 16,000 - 2 600 1,000 210 910 <200**[1] NA (53)
<br /> 8/22/1996 1083 2876 -1793 34,000 - 5,900 2,500 560 2,300 <300**[1] NA (53)
<br /> 11/25/1996 - 1083 2895 -1812 26,000 - 4,000 2,000 390 1,800 <300*[1] NA
<br /> j 2/24/1997 - 1083 24 95 -1412 22,000 - 3,100 1,300 340 1,400 <500**[i] NA
<br /> 5/19/1997 - 1083 2484 -1401 28,000 1 - 4,700 1,900 480 2,200 <300*[1] NA
<br /> 8/21/1997 -- 1083 2592 -1509 15,000 - 3,000 1,200 320 1,200 <500**[i] NA (52)
<br /> 11/17/1997 -- 1083 2694 -1611 2,200 - 510 120 44 130 <100**[1] NA (53)
<br /> 2/9/1998 -- 1083 2433 -1350 15,000 - 3,700 790 440 1,000 <500**[1] NA (53)
<br /> 5/21/1998 -- 1083 2038 -955 10,200 - 2,220 562 238 628 <100 NA (52)
<br /> 8/12/1998 - 1083 2057 -974 1,100 - 234 39 238 494 <2 NA (52)
<br /> 11/9/1998 - 1083 2167 -1084 4,420 - 1,050 212 116 278 <2 NA (52)
<br /> 2/17/1999 - 1083 2098 -1015 8,450 - 1 790 332 266 499 <2 NA (52)
<br /> 5/25/1999 - 1083 2028 -945 1,720 - 469 479 578 764 <2 NA (52)
<br /> 8/18/1999 - 1083 2140 -1057 8,870 - 2,610 176 316 411 <2 NA (52)
<br /> 12/17/1999 - 1083 2224 -1141 1 090 - 309 796 128 5 <2 NA (52),[2]
<br /> 2/22/2000 - 1083 1 21 37 -1054 4 510 1 - 1,500 138 151 207 <2 NA (52)
<br /> 6/22/2000 - 1083 2019 -936 735 - 141 174 124 21 6 <2 NA (53)
<br /> 8/30/2000 - 1083 2239 -1156 8,200 - 2,310 204 259 322 <2 NA
<br /> 11/21/2000 - 1083 2196 -1113 1,140[4] - 210 174 233 515 <2 NA
<br /> 2115/2001 - 1083 2189 1 -1106 1,240[6] - 161 <50 522 11 1 <2 1
<br /> Report Date September 24,2004 Page 3 of 12
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