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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 PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (VgIL) (pg1L) (pglL) (pg/L) (pglL) (pg1L) U191L) (mglL) Comments
<br /> MW-5 5/21/1998 - 928 1876 -948 1 380 167 148 264 125 <100 NA (54)
<br /> 8112!1998 -- 928 1996 -1068 2 450 - 472 250 642 284 <20 NA (54)
<br /> 11/9/1998 - 928 2009 -1081 13,800 -- 2,490 1,890 337 1,640 <2 NA (54)
<br /> 2117!1999 - --6-2-8- 19 26 -9 98 3,130 - 438 285 864 386 <2 NA (54)
<br /> 5!2511999 - 928 18 65 -937 11,800 - 2060 1,060 <100 1,380 <2 NA (54)
<br /> 8!1811999 - 9 28 19 80 -14 52 34 400 - 23,800 1,130 342 1 500 <2 NA (54)
<br /> 12/17/1999 - 928 2063 -1135 <50 - 336 0 616 0 565 204 <2 NA (54),[2]
<br /> 2/22/2000 -- 928 19 42 -1014 3,280 - 942 169 134 415 <2 NA (54),[31
<br /> 6/22/2000 - 928 18 58 -9 30 1,170 - 170 39 2 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 1920[41 -- 391 361 744 233 <2 NA
<br /> 2/15/2001 -- 928 2042 -11 14 357[61 - 269 519 487 175 <2 0 9
<br /> 511712001 - 928 1965 -1037 1 300[51 239 186 383 878 <2 1 1
<br /> 8/16/2001 -- 9 28 2100 -11 72 3,400 -- 54Q 42 43 230 <2 2 6
<br /> 12!612001 -- 9 28 21 95 -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!1312002 - 9 28 2078 -1150 1,700 - 200 16 51 91 <1 0[10] 0 8
<br /> 8/22/2002 - 928 2183 -1255 7,300 960 270 260 1,100 <10 09
<br /> 11!1312002 - 928 22 76 -1348 <50 - 1 2 <0 50 <0 50 <0 50 <0 50 --
<br /> 02/1202003 P 928 2276 -i 348 76 -- 41 <0 50 14 17 <0 50 307
<br /> 05/29/2003 P 9 28 21 26 -11 98 110 - 5 9 <0 50 061 27 <0 50 368
<br /> 08/04!2003 P 928 2186 -1258 390 R - 29 1 8 32 7 5 <0 50 261
<br /> 11/03/2003 P 9 28 22 91 -13 63 620 -- 58 <5 0 1 a 9 3 <5 0 2 61
<br /> 02/09/2004 P 9 28 22 25 -12 97 <50 0 96 <0 50 <0 50 <0 50 <0 SD 197
<br /> 05/1012004 P 928 2`183 -1255 <50 - <050 <0 50 <0 50 <0 so <0 50 159
<br /> MW-6 2/16/1995 -- 893 3706 -2813 39,000 - 6,400 5,200 850 4,400 NA NA (47)
<br /> 5/17/1995 -
<br /> 893 3064 -21 71 130,000 -- 9,900 16,000 1,$00 10,000 NA NA (46)
<br /> 8115!1995 -- 8 93 30 22 -21 29 120,000 - 7 740 9,700 1,500 8,9aD NA NA (46}
<br /> 11!2911995 -- 8 93 30 30 -21 37 160 000 -- 8 200 11,000 1,700 10,000 NA NA (45)
<br /> 2!27/1996 - 893 27 55 -1862 96,000 - 10,000 13,000 1 400 8,100 NA NA
<br /> 5/15/1996 - 8 93 25 79 -16 86 99,000 - 8,800 12 000 1,400 8,000 <900"(1] NA (47)
<br /> 8122l199fi - 8 93 26 48 -1755 98,000 - 8200 7,300 1,600 9,000 <1,000'*[1] NAEEHEHI
<br /> 11/25/1996 -- $93 26 61 -1768 84,Oaa - 9,300 9,500 1,500 8,8DD <900"[i1 NA
<br /> I
<br /> Page 7 of 12
<br /> Report Date July 15,2004
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