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s <br /> ! i <br /> Page 5 of 20 <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 Elevation to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (it,MSL) (it,TOC) (ft, MSL) Change(ft) (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mglL) <br /> ATR-3 2/28(95A 1205 3790 000 003 <br /> (cant) 4/26/95 12 32 3761 -0 29 sheen <br /> 7127195 12 511 3742 -019 <br /> 10/26/95 (a) 1297 -- -- __ -- _- - - <br /> 2/12196 1210 -- 0 87 1,500 89 <0 5 43 150 -- - <br /> 4/18/96 1260 -050 -- -- -- -- -- -- -- <br /> 7/18/96 1260 -- 000 - 1,600 26 5 2 70 51 1,800 - <br /> 11/15/96 13 40 -- 0 80 -- -- -- -- . <br /> 3114/97 NP 13 34 -- 006 - 1,200 10 <0 5 43 19 620 005 <br /> 6/4/97 1270 0 64 -- -- - <br /> 8111/97 NP 1272 -002 3,400 20 <10 160 110 <50 -- <br /> 11/17/97 1293 -- -0 21 -- -- _- <br /> 3130/98 NP 1218 -- 075 8400 <2 5 <2 5 100 52 120 0 8 <br /> 6/25198 1241 -- -0 23 -- _- -- <br /> 9/11/98 <br /> -9/11/98 NP 1284 -043 - 1,100 61 <0 5 25 22 41 123 <br /> 12/15/98 1160 -- 124 -- - -- -- -- 21 <br /> 3(17/99 NP 1241 -- -0 81 652 141 <0 5 117 7 29 164 7 8 <br /> 5114/99 1270 -029 -- -- - -- -- -- -- 120 <br /> 9116/99 NP 1279 -009 - 2,800 175 <5 0 499 i5 1 52 3 1 9 <br /> 12!22199 1276 - 003 -- -- -- -- -- 0 37 <br /> 2129100 NP 1210 -- 066 405 235 <1 00 515 1 18 2,160 3 6 <br /> WPM NP 1281 -- -0 71 -- -- -- <br /> 9125/00 NP 13 01 -020 2,350 <2 50 565 26 9 840 464 060 <br /> 12/29/00 1147 - 154 -- -- -- -- -- - 4 2 <br /> 3/27/01 P 1249 -102 - <50 0 <0 500 <0 500 <0 500 <0 500 526" 3 2 <br /> 6/20101 1265 -- -016 -- -- — - <br /> 9112101 P 1271 -006 -- 54 053 10 056 25 83 25 <br /> 12/19/01 1256 0 15 - _- - <br /> 3114102 P 1257 -- -0 01 — 2300' <10 10 <10 <10 <5 0' 128 <br /> ATR-4 4123(87 49 03 1085 3818 -- -- 21,000 3,000 200 <10 950 -- -- <br /> 12/22/87 1100 38 03 -015 -- 5,300 310 430 270 - -- <br /> 3124/88 1098 3806 0 02 6,000 5,800 320 930 740 - <br /> 6/23188 1211 36 92 -1 13 - 5,200 237 8 8 2 10 -- - <br /> 9/29188 1072 3831 139 1,400 1,430 115 350 130 - <br /> 02y89 1091 38 12 -019 - 22,000 1,300 82 64 170 <br /> 6129/89 1100 3803 -009 1,300 590 38 97 220 <br /> 9/18/89 11 19 3784 -019 -- 630 280 13 49 100 -- _ <br /> Proiects/ARCO/2093(Reports/Tablestgwtables2093 As <br />