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TABLE 1
<br /> Groundwater Monitoring and Analytical Data _
<br /> Former ARCO Service Station No 2168
<br /> 441 Charter Way
<br /> Stockton, California
<br /> Elevation
<br /> Top of Static Groundwater Depth to Ethyl- Total Dissolved
<br /> Well ID Casing Water Level Elevation Screen TPHG Benzene Toluene benzene Xylenes MtBE Oxygen
<br /> &Sample Date (feet msl) (feet bgs) (feet msl) (feet bgs) ug/L ug/L ug/L ug/L ug/L ug/L (mg/L)
<br /> MW-5 54 8/12/1998 1996 -1068 2,450 472 250 642 284 <20 NA
<br /> (cont) 54 11/9/1998 2009 -1081 13,800 2,490 1,890 337 1,640 <2 NA
<br /> 54 2/17/1999 1926 -998 3,130 438 285 864 386 <2 NA
<br /> 54 5/25/1999 1865 -937 11,800 2,060 1,060 <100 1,380 <2 NA
<br /> 54 8/18/1999 1980 -1052 34,400 23,800 1,130 342 1,500 <2 NA
<br /> 54 12Ji7/99[2] 2063 -1135 <50 336 0 616 0 565 204 <2 NA
<br /> 54 02122/00[3] 1942 -1014 3,280 942 169 134 415 <2 NA
<br /> 55 6/22/2000 1858 -930 1,170 170 39 31 106 <2 NA
<br /> 8/30/2000 1962 -1034 32,800 3,460 2,970 664 4,010 <2 NA
<br /> 11/21/2000 2037 -1109 1,920[4] 391 361 744 233 <2 NA
<br /> 2/15/2001 2042 -11 14 357[6] 269 519 487 175 <2 09
<br /> 5/17/2001 1965 -1037 1,300[5] 239 186 383 878 <2 1 1
<br /> 8/16/2001 2100 -1172 3,400 540 42 43 230 <2 26
<br /> 12/6/2001 2195 -1267 1,400 230 20 44 99 <5 0* 1 2
<br /> 2/14/2002 2049 -11 21 1,300 180 23 48 75 <0 50 1 5
<br /> 6/13/2002 2078 -11 50 1,700 200 16 51 91 <1 0[10] 08
<br /> 8/22/2002 21 83 -1255 7,300 960 270 260 1,100 <10 09
<br /> 11/13/2002 2276 -1348 <50 12 <0 50 <0 50 <0 50 <0 50 --
<br /> 2/12/2003 2276 -1348 76 41 <0 5 1 4 17 <0 5 31
<br /> 5/29/2003 21 26 -11 98 110 59 <0 5 061 27 <0 5 37
<br /> MW-6 47 2/16/1995 893 3706 -2813 300 39,000 6,400 5,200 850 4,400 NA NA
<br /> 46 5/17/1995 3064 -2171 130,000 9,900 16,000 1,800 10,000 NA NA
<br /> 48 8/15/1995 3022 -2129 120,000 7,700 9,700 1,500 8,900 NA NA
<br /> 45 11/29/1995 3030 -2137 160,000 8,200 11,000 1,700 10,000 NA NA
<br /> 2/27/1996 2755 -1862 96,000 10,000 13,000 1,400 8,100 NA NA
<br /> 47 5/15/1996 2579 -1686 99,000 8,800 12,000 1,400 8,000 <900**[i] NA
<br /> 8/22/1996 2648 -1755 98,000 8,200 7,300 1,600 9,000 <1,000**[1] NA
<br /> 11/25/1996 2661 -1768 84,000 9,300 9,500 1,500 8,800 <900**(i] NA
<br /> 2/24/1997 2277 -1384 140,000 9,700 11,000 1,400 8,500 <2,000**(1] NA
<br /> 5/19/1997 2253 -1360 69,000 7,900 5,000 1,200 7,700 <600*[1 1 NA
<br /> 45 6/21/1997 2365 -1472 86,000 7,400 4,000 1,300 7,400 <1,000**[1] NA
<br /> 41 11/17/1997 2470 -1577 42,000 5,400 2,100 1,100 6,600 <57 NA
<br /> 43 2/9/1998 2201 -1308 62,000 12,000 7,000 1,300 7,400 <1,000**(1] NA
<br /> 42 5/22/1998 1814 -921 66,100 9,740 4,620 1,180 6,820 <100 NA
<br /> 42 8/12/1998 18 42 -949 54,700 7,670 2,340 1,230 6,800 <200 NA
<br /> K1WprocessV5 BP ARM021881QuarterV2 QTR 0312168 GWMR 2Q03
<br /> 6of10
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