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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) (pglL) MIL) (pg/L) (pg/L) (pgtL) (E.g/L) (ugIL) (mg/L) Comments
<br /> MW-3 12/17/1999 - 958 2094 -1136 26,900 - 8,800 113 2,070 610 582 NA (53),[2]
<br /> 2/22/2000 - 958 2052 -1094 1,300 - 487 192 122 654 652 NA (53)
<br /> 6/22/2000 - 958 1887 -929 21,300 - 7,430 616 1,610 349 244 NA (53)
<br /> 8/30/2000 - 958 1998 -1040 22,900 -- 9,540 313 2,410 791 127 NA
<br /> 11/21/2000 - 958 2073 -1115 31,300[4] - 7,820 341 2,550 1,750 844 NA
<br /> 2/15/2001 -- 958 2079 -1121 39,800[6] - 9,680 176 2,420 1,230 603 0 6
<br /> 5/17/2001 -- 958 2004 -1046 27,100[5] - 8,790 219 2,270 1,210 <10 0 5
<br /> 8/16/2001 - 958 2132 -1174 30,000 - 8,700 320 2,800 1,800 <100* 09
<br /> 12/6/2001 -- 958 2245 -1287 26,000[8] - 10,000 <200 2000 770 <100* 08
<br /> 2/14/2002 - 958 2090 -1132 25,000 - 6,900 380 2,000 1,500 <100110] 1 9
<br /> 6/13/2002 - 958 2109 -1151 22,000 - 5,400 63 1,800 750 <50[10] 08
<br /> 8/22/2002 - 958 2213 -1255 24,000 -- 9,600 100 2,200 780 <25 09
<br /> 11/13/2002 - 958 2300 -1342 <50,000 - 8,400 <500 1,500 <500 <500 -
<br /> 02/12/2003 - 958 - -- - - - -.. - - - -- Not Sampled
<br /> 05/29/2003 P 958 2153 -1195 23,000 - 8,000 <50 1,900 430 <120 473
<br /> 08/04/2003 P 958 2216 -1258 22,000 R - 8,100 <100 1,700 310 <100 329
<br /> 11/03/2003 P 958 2329 -1371 18,000 - 6,900 <50 1,700 350 <50 09
<br /> 02/09/2004 P 958 2317 -1359 17,000 - 7,100 <120 1,100 300 <120 331
<br /> 105/10/20041 P 1 958 2217 -1259 18,000 5 400 <250 910 <250 <250 256
<br /> 108/09120041 P 1 958 2325 -1367 <25,000 - 7,800 <250 1,600 620 <250 17
<br /> MW-4 2/16/1995 - 1234 3925 -2691 77,000 - 9,200 13,000 1,700 8,000 NA NA (58)
<br /> 5/17/1995 -- 1234 3465 -2231 89,000 -- 11,000 17,000 2,100 9,900 NA NA (58)
<br /> 8/15/1995 - 1234 3430 -2196 74,000 - 6,400 10,000 1,600 7,600 NA NA (59)
<br /> 11/29/1995 - 1234 3442 -2208 92,000 - 7,800 12,000 1,700 7,600 NA NA (59)
<br /> 2/27/1996 - 1234 3167 -1933 61,000 - 7,600 8,500 1,600 6,600 NA NA
<br /> 5/15/1996 - 1234 3009 -1775 64,000 - 8,100 8,600 1,600 6,400 <500*[1] NA (58)
<br /> 8/22/1996 - 1234 3072 -1838 79,000 - 9,200 11 000 1,800 7,400 <700**(1] NA
<br /> 11/25/1996 - 1234 3078 -1844 72,000 - 8,800 9,300 1,600 6,100 <500*[1] NA
<br /> 2/24/1997 - 12 34 2682 -1448 40,000 - 6,700 2,200 900 2,600 <600**[i] NA
<br /> 5119/1997 - 1234 2667 -1433 57,000 -- 8,700 6,700 1,300 5,000 <600*[1] NA
<br /> 8/21/1997 -- 1234 2774 -1540 48,000 - 7,200 5,000 1200 3,900 <1,000**[1] NA (38)
<br /> 11/17/1997 - 1234 2879 -1645 12,000 - 4,800 180 370 280 58 NA (59)
<br /> 2/9/1998 - 1234 2627 1 -1393 17,000 - 5,200 540 690 730 1 <500**[1] 1 NA (59)
<br /> Report Date September 24,2004 Page 5 of 12
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