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Pal1 of 19 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy,CA <br /> Well Depth Groundwater Groundwater Product Ethyl- Xylenes <br /> Well Date EJevahon to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(it) (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> ATR-7 2/28/95 1200 3765 -006 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> (cant) 4125/95 1241 3724 -0 41 -- <50 <0 5 <0 5 <0 5 <0 5 - -- <br /> 7/27195 1261 3704 -020 <60 <0 5 <0 5 <0 5 <0 5 <br /> 10/26/95 1267 3698 -006 -- <60 <0 5 <0 5 <0 5 <0 5 - <br /> 2112/96 1196 3770 072 -- <60 <0 5 <0 5 <0 5 <0 5 - <br /> 4/18/96 1235 3730 -040 <60 <0 5 <0 5 <0 5 <0 5 <br /> 7118/96 1245 3720 -010 -- <50 <0 5 <0 5 <0 5 <0 5 28 -- <br /> 11/15/96 1311 36 54 -066 -- <50 <0 5 <0 5 <0 5 <0 5 120 -- <br /> 3114/97 1320 3645 -009 <50 <0 5 <0 5 <0 5 <0 5 6 3 0 10 <br /> 6/4197 NP 1244 37 21 076 -- <50 <0 5 <0 5 <0 6 <0 5 <2 5 013 <br /> 8/11197 NP 1272 3693 -0 28 -- <50 <0 5 <0 5 <0 5 <0 5 22 -- <br /> 11/17197 NP 1266 3699 006 - <50 <0 5 <0 5 <0 5 <0 5 3 5 -- <br /> 3/30/98 NP 1211 3754 055 - <50 <0 5 <0 S <0 5 <0 5 <5 0 13 <br /> 6/25/98 NP 1246 3719 -0 35 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 2 5 <br /> 9/11/98 NP 1261 3714 -005 <50 <0 5 <0 5 <0 5 <0 5 <2 5 1 14 <br /> 12/15198 NP 1241 3724 010 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 220 <br /> 3117199 NP 1223 3742 018 - <50 <0 5 <0 5 <0 5 <0 5 <5 0 200 <br /> 5114/99 NP 1241 3724 -018 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 1 90 <br /> 9116/99 NP 1258 3707 -0 17 -- <60 <0 5 <0 5 <0 5 <0 5 <5 0 360 <br /> 12/22/99 NP 1252 37 13 006 -- <50 <0 5 <0 5 <0 5 <0 5 <2 50 420 <br /> 2129100 NP 1206 3769 046 -- <50 <0 5 <0 6 <0 5 <0 5 <2 50 470 <br /> 617100 NP 1266 3710 -049 -- <50 <0 5 <0 5 <0 5 <0 5 572 -- <br /> 9/25/00 NP 1271 36 94 -016 -- <50 <0 5 <0 5 <0 5 <0 5 <2 50 0 50 <br /> 12/29/00 P 1243 3722 028 -- <50 0 <0 500 <0 500 <0 500 0 656 17 5* 6 7 <br /> 3127/01 P 1233 37 32 010 <50 0 <0 500 <0 500 <0 500 <0 500 305' 3 8 <br /> 6/20101 P 1247 3718 -014 -- <50 <0 50 <0 50 <0 50 <0 50 580* -- <br /> 9/12/01 P 12.50 3715 -003 -- <50 <0 50 <0 50 <0 50 <0 50 140 12 <br /> ATR-8 8/25/91 4598 -- -- -- -- 2,700 110 <0 5 130 98 <br /> 9/25/91 885 3713 -- 1,400 95 <0 5 51 97 -- <br /> 1/23192 829 3769 0 56 - <50 2 5 <0 5 <0 5 <0 5 -- <br /> 4/20/92 811 3787 018 - -. .- _- <br /> 4121/92 -- -- -- -- 140 14 0 9 14 9 3 - - <br /> 7/8/92 848 3760 -- 67 4 0 <0 5 9 2 0 8 -- -- <br /> 1017/92 869 37 29 -0 21 -- -- .. — -- _ <br /> 10/8192 -- — -- 140 7 8 3 2 11 8 8 - - <br /> Projects/ARCO/2093/ReportsrTables/gwtables2093 As <br />