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Page 1 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 Bevation to Water Bevaton Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mglL) <br /> ATR-1 4123187 5658 1249 38 09 -- <100 <0 5 <0 5 <0 5 23 <br /> 12/22/87 1263 3795 -014 -- 5 9 <0 5 0 9 <0 5 <br /> 3124/88 12 54 3804 009 -- -- <0 5 <0 5 <0 5 <0 5 - - <br /> 6123/8B 1283 3775 -029 - - <0 5 13 4 3 2 2 - <br /> 9129/88 1301 3757 -018 -- <05 <0 5 <0 5 <0 5 -- <br /> 2/22f89 1246 3812 055 -- <100 14 <0 5 <0 5 18 <br /> 6121/89 1237 3821 009 -- 520 360 0 8 2 1 36 <br /> 9118189 1288 3770 -0 51 - 27,000 254 1,200 570 7,100 <br /> 12(27/89 1268 3790 020 -- <60 3 4 <0 3 13 14 <br /> 4/18190 1284 3774 -016 13 21 15 16 16 - - <br /> 10/16/90 -- -- -- -- <50 1 <0 5 2 2 <br /> 10/i9/90 1310 37 48 -- <br /> 1/10/91 <br /> -1/10/91 1278 3780 032 <50 2 4 <0 5 57 2 3 <br /> 4/10/91 1262 3806 026 - 73 13 <0 5 4 8 <0 5 <br /> 7/10/91 1295 3763 -0 43 - 90 2 <0 5 47 17 -- <br /> 9/24191 1330 3728 -036 - <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/23(92 1277 3781 053 -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 4/20/92 1258 3800 019 -- <60 <0 5 <0 5 <0 5 <0 5 <br /> 718/92 1290 3768 -032 <50 <0 5 <0 5 0 6 <0 5 -- <br /> 10/7/92 1309 3749 -019 <50 <0 5 <0 5 <0 5 <0 5 <br /> 1/18/93 — -- <br /> 4/14/93 1231 3827 -- <50 <0 5 <0 5 1-5 <0 5 -- <br /> 8(30/93 1318 3740 -0 87 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 10/27/93 1313 3745 005 <50 <0 5 <05 <0 5 <0 5 - <br /> 2/18/94 1265 3793 048 17 0 6 1 1 0 8 - <br /> 5/20/94 1271 3787 -006 27 0 6 0 3 1 4 <0 5 -- <br /> 10/7/94 1314 37 44 -0 43 <50 <0 5 <0 5 <0 5 <0 5 - <br /> 12/16/94 1274 37 84 040 <50 <0 5 <0 5 <0 5 <0 5 <br /> 2128195 1265 3793 009 <50 <0 5 <0 5 1 <0 5 - <br /> 4/26(95 1290 3768 -025 -- <50 <0 5 <05 <0 5 <0 5 -- <br /> 7/27/95 1322 37 36 -032 -_ __ <br /> 10/26/95 1340 3718 -018 - <br /> 10/27/95 -- -- -- -- <50 <0 5 <0 5 <0 5 <0 5 - - <br /> 2112196 1230 38 28 -- 120 <0 5 <0 5 2 2 <0 5 -+ - <br /> 4/18/96 1290 3768 -0 60 _. __ - - <br /> 7/18/96 1328 3730 -038 - <60 <0 5 <0 5 <0 5 <0 5 <5 <br /> Prolects/ARC0/2093/Reports/Tables(gwtables2093 xis <br />