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Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> Farmer ARCO Service Station No 2168
<br /> 441 W Charter Way, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Tota!
<br /> Well Date P/ Elevation Water Elevation TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) W/L) (dug/L) (pg1L) (41L) (pg/L) MIL) (P9IL) (mg/L) Comments
<br /> MW-5 11/25/1996 -- 928 2733 .1805 53,000 - 7 000 6,100 800 4,000 <600**[1] NA
<br /> 2/24/1997 -- 928 2330 -1402 40,000 - 4,400 4,700 590 3,100 <700**[1] NA
<br /> 5/19/1997 - 928 2321 -1393 43,000 - 5,500 4,300 660 3,800 <300-[i] NA
<br /> 8/21/1997 - 1 928 2429 -1501 32,000 - 5,200 3,900 560 3,100 <1,000[1]** NA (54)
<br /> 11/17/1997 - 928 2533 -1605 10,000 - 1,700 1,300 210 1,100 <500**[11 NA (55)
<br /> 2/9/1998 - 928 2262 -1334 4,700 - 740 520 110 520 <25**[11 NA (55)
<br /> 5/21/1998 - 928 1876 -948 1,380 - 167 148 264 125 <100 NA (54)
<br /> 8/12/1998 -- 928 1996 -1068 2,450 - 472 250 64 2 284 <20 NA (54)
<br /> 11/9/1998 - 928 2009 -1081 13,800 - 2,490 1,890 337 1,640 <2 NA (54)
<br /> 2/17/1999 - 928 1926 -998 3,130 - 438 285 864 386 <2 NA (54)
<br /> 5/25/1999 - 928 1865 -937 11,800 - 2,060 1,060 <100 1 1,380 <2 NA (54)
<br /> 8/18/1999 -- 928 1980 -1052 34,400 -- 23,800 1,130 342 1,500 <2 NA (54)
<br /> 12/17/1999 -- 928 20 63 -1135 <50 - 336 0 616 0 565 204 <2 NA (54).[21
<br /> 2/22/2000 -- 928 1942 -1014 3,280 - 942 169 134 415 <2 NA (54),[3]
<br /> 6/22/2000 - 928 1858 -930 1,170 - 170 392 31 106 <2 NA (55)
<br /> 8/30/2000 - 928 1962 -1034 32,800 - 3,460 2,970 664 4,010 <2 NA
<br /> 11/21/2000 - 928 2037 -1109 1,920[4] - 391 361 744 233 <2 NA
<br /> 2/15/2001 - 928 2042 -11 14 35716] - 269 519 487 175 <2 0 9
<br /> 5/17/2001 - 928 1965 -1037 1,300[51 - 239 186 383 878 <2 1 1
<br /> 8/16/2001 - 928 21 00 -1172 3,400 - 540 42 43 230 <2 26
<br /> 12/6/2001 - 928 2195 -1267 1,400 - 230 20 44 99 <5 0* 12
<br /> 2/14/2002 -- 928 2049 -1121 1,300 - 180 23 48 75 <0 50 1 5
<br /> 6/13/2002 - 928 2078 -1150 1,700 - 200 16 51 91 <1 0(10] 0 8
<br /> 8/22!2002 -- 928 21 83 -1255 7,300 - 960 270 260 1,100 <10 09
<br /> 11/13/2002 -- 928 2276 -1348 <50 - 12 <0 50 <0 50 <0 50 <0 50 -
<br /> 02/12/2003 P 928 2276 -1348 76 - 41 <050 14 17 <050 307
<br /> 05/29/2003 P 928 2126 -1198 110 -- 59 <0 50 061 27 <0 50 368
<br /> 08/04/2003 P 928 2186 -1258 390 R - 29 18 32 75 <0 50 261
<br /> 11/03/2003 P 928 2291 -1363 620 -- 58 <50 10 93 <50 261
<br /> 02/09/2004 P 928 2225 -1297 <50 -- 096 <0 50 <0 50 <0 50 <0 50 197
<br /> 05/10/2004 P 928 21 83 -1255 <50 - <0 50 <0 50 <0 50 <0 50 <050 159
<br /> 08/09/2004 P 928 22 94 j -1366 1 1,300 1 - 1 220 1 17 1 40 47 <50 25
<br /> i
<br /> MW-6 2116/1995 - 893 3706 -2813 1 39,000 -- 6,400 5,200 850 4,400 NA NA (47)
<br /> Report Date September 24,2004 Page 7 of 12
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