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i
<br /> 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) (Frg1L) (ug1L) (pglL) (pg1L) (pglL) (ErgIL) (YglL) (mg/L) Comments
<br /> MW-3 11/21/2000 - 958 2073 -1115 31,300[4] - 7,820 341 2,550 1,750 844 NA
<br /> 2/15/2001 - 958 2079 -11 21 39,800[6] -- 9 680 176 2 420 1,230 603 Q 6
<br /> 511712001 -- 958 2004 -1046 27,100[5] - 8,790 219 2 270 1,210 <10 0 5
<br /> 8/16/2001 - 958 21 32 .1174 30,000 8,700 320 2,800 1,800 <100- 69
<br /> 12/6/2001 - 958 22 45 1287 26,000[8] -- 10,000 <200 2,000 770 <10D* 0 8
<br /> 2!1412002 958 2090 -1132 25 000 6,900 380 2,000 1,500 <100[10] 19
<br /> 6/13/2002 958 21 09 -1151 22 000 - 5,400 63 1,800 750 <50[14] 0 8
<br /> 8/22/2002 - 958 2213 1255 24,000 - 9 600 100 2200 780 <25 0 9
<br /> 1111312002 - 9 5$ 2300 -1342 <50,000 -- 8,400 <5D0 1 500 <500 <500 -
<br /> 02/12/2003 - 958 -- -- -- -- - -- -- - - Not Sampled
<br /> 05/29/2003 P 9 58 2153 -11 95 23,000 - 8,004 <50 1 900 430 <120 4 73
<br /> 08104/2003 P 9 58 22 16 -12 58 22 DOD R - 8,100 <100 1 700 310 <100 329
<br /> 11/03/2003 P 9 58 23 29 -13 71 18,000 - 6 900 <50 1,7QD 350 <50 0 86
<br /> 02/09/2004 P 9 58 23 17 13 59 17,000 7,100 <120 1,100 300 <120 331
<br /> 05/1012004 P 9 58 2217 -12 59 16,000 -- 5,400 <250 91Q <250 <250 256
<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 34 65 -22 31 89,000 -- 11,400 -T7,000 2 100 9,900 NA NA {58}
<br /> 8/15/1995 - 1234 3430 -21 96 74 000 - 6,400 10,000 1 600 7,600 NA NA (59)
<br /> 11/29/1995 -- i 34 34 42 -2208 92,000 7 800 12,000 1 700 7,600 NA NA (59)
<br /> 2127/1996 - 1234 31 67 -19 33 61,000 -- 7,600 8,500 1,600 6,600 NA NA
<br /> 5/15/1996 - 12 34 30 09 -17 75 64 000 - 8,104 8,600 1 600 6,400 <500-[1] NA (58)
<br /> 8/22/1996 - 12 34 30 72 -18 38 79 000 -- 9,200 11 000 1,800 7 400 <700"[1] NA
<br /> ---
<br /> -T1125!1996 -- 12 34 30 78 -18 44 72,000 - 8,800 9,300 1,600 6104 <500-[1] NA
<br /> 2/24/1997 1234 2682 -1448 40,000 6 700 2,200 900 2 600 <600'*[1] NA
<br /> 5!1911997 - 12 34 2667 -1433 57 000 - 8,700 6,700 1 300 5,000 <600-(1] NA
<br /> 8!2111997 - 12 34 27 74 -15 40 4$004 - 7,200 5 ODD 1,200 3 900 <1,000--[i] NA {38)
<br /> 1111711997 - 1234 2879 -1645 12 000 - 4 800 180 370 280 58 NA (59)
<br /> 2/9/1998 12 34 26 27 -13 93 17 000 - 5,200 540 690 730 <500-*[1] NA (59)
<br /> 5/22/1998 -- 12 34 22 21 -9 87 1fi,700 - 5 360 611 663 715 <104 NA (58)
<br /> 8/12/1998 - 1234 2234 -1000 19 300 -- 5 880 890 678 911 <20 NA (58)
<br /> 91/9/1998 12 34 2342 -1108 23,600 - 6 340 720 692 875 459 NA (58)
<br /> 2/17/1999 1234 2265 -10 31 �241131100U�- 6970 950 907 1,030 666 NA (58)
<br /> 5/25/1999 - 1234 2202 -9 68 9,870 4 870 <100 4,600 64 6 NA (58)
<br /> Page 5 of 12
<br /> ReportDate Jury 15,2004
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