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PagR 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 Elevation to Water Elevaton 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) (mg/L) <br /> TEX-1 7118196 1152 - -017 - -- -- - - <br /> (cont) 11/15/96 1230 -- -0 78 -- -- - - -- - <br /> 3114/97 -- -- -- -- <br /> 6/4/97 -- - -- -- -- - -- <br /> 8111/97 <br /> 11/17/97 - -- - -- -- <br /> 3130/98 1100 -- - - - <br /> 6125198 100 - 1000 - - -- - <br /> 9/11/98 -- -- -- -- <br /> 12/15/98 1147 -- -- -- -- -- - 01 <br /> 5!14/99 1160 -- -003 -- -- -- -- -- 480 <br /> 9/16199 1170 -- -020 - -- - 2 4 <br /> 12/22/99 1156 -- 014 - - - - - 183 <br /> 2129100 1098 -- 058 -- -- - - 4 0 <br /> 617100 -- - -- -- -. _ - -- - - -- <br /> 9125100 -- .. -- - -- -- -- -- <br /> 12/21/00 1188 — -- -- -- - -- -- - <br /> 3127101 1134 -- 054 -- — -- -- -- - <br /> 6/20101 1153 -- -019 -- -- -- <br /> 9l12101 1162 -- -009 — — — -- -- -- — 16 <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tort-butyl ether <br /> DO=Dissolved oxygen <br /> It=feet <br /> MSL=mean sea level <br /> TOG=top of casing <br /> ppb=parts per billion <br /> mg/L=milligrams per liter <br /> PINP=purged/not purged <br /> "=analyzed using EPA Method 8260 <br /> A=groundwater elevation corrected by adding 0 77 X product thickness <br /> <=below given laboratory detection limit <br /> —=not measured or analyzed(in case of product thickness,none found) <br /> (a)=top of casing altered and casing not resurveyed,water-level measured from highest point of casing i <br /> Projec4s/ARCO/2093/Reports7abWgwtables2093 As <br />