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0 04 of 21 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 42093 <br /> 3425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Well Date Elevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft MSL) (it TOC) (ft,MSL) Change(ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (mg/L) <br /> ATR 2 2/29/2000 NP 1150 3772 064 <50 <0 5 <0 5 <0 5 <0 5 483 5 1 <br /> (cont) 6/7/2000 NP 1211 37 11 061 <50 <0 5 <0 5 <0 5 <0 5 126 -- <br /> 9/25/2000 NP 1211 37 11 000 <50 <0 5 <0 5 <0 5 <0 5 141 030 <br /> 12(29/2000 P 1203 3719 008 <50 0 <0 500 <0 500 <0 500 <0 500 89* 5 6 <br /> 3/27/2001 P 1192 3730 Oil <50 0 <0 500 <0 500 <0 500 <0 500 37 2* 4 1 <br /> 6/20/2001 P 1203 3719 -011 - <50 <0 50 <0 50 <0 50 <0 50 96* -- <br /> 9/12/2001 P 1218 3704 -016 - <500 <5 0 <50 <5 0 <5 0 500 2 9 <br /> 12119/2001 P 1197 3725 0 21 <500 <5 0 <5 0 <5 0 <5 0 250* 082 <br /> 3/1412002 P 1200 3722 -003 <500 <5 0 <5 0 <5 0 <5 0 98* 082 <br /> 6/28/2002 P 12 12 3710 -0 12 170 <0 5 <0 5 <0 5 <0 5 300* 15 <br /> 9/11/2002 P 1210 37 12 002 -- 54 <0 5 <0 5 <0 5 <0 5 110* 1 9 <br /> 12/17/2002 P 1144 3778 066 -- <50 <0 5 <0 5 <0 5 <0 5 16* 1 4 <br /> 3/31/2003* P 1220 3702 -0 76 -- <50 <0 5 <0 5 <0 5 <0 5 5 0 14 <br /> ATR-3 4/23/1987 49 93 1179 3814 -- - 17,000 2,300 180 <5 0 2,300 -- -- <br /> 12/22/1987 11 93 3800 -0 14 5,000 50 530 250 <br /> 3/24/1988 1258 37 35 0 65 -- 43,000 8,300 8,700 4,400 7,800 <br /> 6/23/1988 1117 3876 141 70,000 6,160 4,221 1,800 4,750 <br /> 9/29/1988 1223 3770 106 57,400 8,850 17,600 2,190 8,170 -- <br /> 2/22/1989 1182 3811 041 110,000 1,000 2,100 480 2,000 - <br /> 6/29/1989 -- - - 4,500 890 520 250 1,100 -- - <br /> 9/18/1989 1219 3774 7,400 1,000 1,300 460 2,200 - - <br /> 12/28/1989 1201 3792 018 27,000 840 1 400 840 5,600 - <br /> 4/18/1990 1215 3778 -014 - 4,800 1,000 490 340 1,500 -- <br /> 10/16/1990 1235 3758 -0 20 14,000 1900 1,300 780 4,600 <br /> 10/19/1990 1228 3765 007 -- -- -- - -- <br /> 1/10/1991 1201 3792 027 -- 2 600 610 230 160 670 -- -- <br /> 4/10/1991 1182 3811 019 - 3,000 910 120 110 190 <br /> 7/10/1991 1223 3770 041 19,000 420 300 340 760 -- <br /> 9/24/1991 1257 3736 034 2,000 280 81 69 130 - - <br /> 1/23/1992 1212 3781 045 sheen -- -- - - <br /> 4/20/1992 1193 $800 019 sheen -- - - <br /> 7/8/1992 1222 3771 -029 sheen -- - -- <br /> 10/7/1992 1238 3755 -016 sheen - -- -- - -- <br /> 1/18/1993 1122 3871 1 16 sheen - -- - <br /> 4/14/1993 1149 38 44 -027 sheen - -- -- - <br /> 8/30/1993 1243 3760 -094 sheen -- <br /> 10/27/1993 1239 3754 004 sheen -- - - -- -- <br /> 1 <br /> K IWprccaasV5 9P ARC0W0931Quarteriyll QTR=2093 OWMAIQ03 <br />