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Tae P.0of 18 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Blvd,Tracy California <br /> Floating <br /> Well Depth product Groundwater Groundwater Total <br /> Date L7evation to Water thickness Elevation Elevation Change TPHg Benzene Toluene Ethylbenzene Xylenes MTBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mWI) <br /> ATR 1 04123/87 6068 1249 -- 3809 -- <100 <0 5 <0 5 <0 5 23 <br /> 12/22/87 1263 3795 -014 - 59 <0 5 09 <0 5 <br /> 03/24188 1254 -- 3804 009 <0 5 <0 5 <0 5 <0 5 <br /> 06/23/88 1283 -- 3775 -029 <0 5 Is 43 22 <br /> 09/29/88 1301 -- 3757 -018 <0 5 <0 5 <0 5 <0 5 <br /> 02/22/89 1246 3812 055 <100 14 <0 5 <0 5 18 <br /> 06/21/89 1237 -- 3821 009 520 360 08 21 36 <br /> 09/18/89 1288 3770 -051 27,000 250 1,200 570 7,100 <br /> 12/27/89 1268 3790 020 <50 34 <0 3 13 14 <br /> 04/18/90 1284 -- 3774 -016 13 21 15 16 16 <br /> 10/16/90 -- -- -- -- <50 1 <0 5 2 2 <br /> 10/19/90 1310 3748 -- -- -- -- - -- <br /> 01/10/91 1278 -- 3780 032 <50 24 <0 5 57 23 <br /> 04/10/91 1252 3806 026 73 Is <0 5 48 <0 5 <br /> 07/10/91 1295 -- 3763 -043 90 2 <0 5 47 17 <br /> 09/24/91 1330 -- 3728 -035 <50 <0 5 <0 5 <0 5 <0 5 <br /> 01/23192 1277 -- 3781 053 <50 <0 5 <0 5 <0 5 <0 5 <br /> 04/20/92 1258 -- 3800 019 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/08/92 1290 -- 3768 -032 <50 <0 5 <0 5 06 <0 5 <br /> 10/07/92 1309 -- 3749 -019 <50 <0 5 <0 5 <05 <0 5 - <br /> 1118193 -- <br /> 04/14/93 1231 -- 3827 -- <50 <0 5 <0 5 15 <0 5 <br /> 08130(93 1318 -- 3740 -087 <50 <0 5 <0 5 <05 <0 5 <br /> 10/27/93 1313 3745 005 <60 <0 5 <0 5 <0 5 <0 5 <br /> 07118/94 1265 -- 3793 048 17 06 1 1 08 <br /> 05/20/94 1271 3787 -006 27 06 03 14 <0 5 <br /> 10/07/94 1314 -- 3744 -043 <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/16/94 1274 3784 040 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 02/28/95 1265 -- 3793 009 <50 <0 5 <0 5 1 <0 5 <br /> 04/26/95 1290 -- 3768 -025 <50 <0 5 <0 5 <0 5 <0 5 <br /> 07/27/95 1322 - 3736 -032 -- -- -- <br /> 10/26/95 1340 -- 3718 -018 - -- -- - - <br /> 10/27/95 -- -- -- -- <50 <0 5 <0 5 <0 5 <0 5 <br /> 02/12/96 1230 -- 3828 120 <0 5 <0 5 22 <0 5 <br /> 04/18/96 1290 3768 -060 - -- -- -- -- <br />