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� • i <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#6020 <br /> 1711 E Yosemite Ave,Manteca,CA <br /> Well Depth Groundwater Groundwater Ethyl- Xylenes <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) MtBE DO <br /> !Number Sampled (ft,MSL) (ft,TQC) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> MW-5 2/15101 4361 2088 22 73 -- <50 0 <0 500 <0 500 <0 500 <0 500 <2 5 - <br /> 6/1101 21 22 2239 -034 <50 <0 50 <0 50 <0 50 <0 50 <25 - <br /> 9111101 2248 2113 -126 <50 <0 50 <0 50 <0 50 <0 50 <2 5 246 <br /> MW-6 2115/01 4365 20 92 22 73 -- <500 <5 000 <5 000 <5 000 <5 000 1,260 - <br /> 6/1101 2127 2238 -035 <500 <5 0 <5 0 <5 0 <5 0 4,200 - <br /> 9/11/01 2251 2114 -124 <5,000 <50 <50 <50 <50 3,800 081 <br /> MW 7 2115101 4306 20 25 22 81 -- <50 0 <0 500 <0 500 <0 500 <0 500 <2 5 - <br /> 6/1/01 20 60 2246 -035 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <br /> 9/11/01 2186 2120 -126 <50 <0 50 <0 50 <0 50 <0 50 <2 5 188 <br /> MW-8 2/15101 43 41 2042 2299 -- <50 0 <0 500 <0 500 <0 500 <0 500 <2 5 - <br /> 6/1/01 2076 2265 -034 <50 <0 50 <0 50 <0 50 <0 50 <2 5 - <br /> 9/11/01 2195 2146 -1 19 <50 <0 50 <0 50 <0 50 <0 50 <2 5 187 <br /> MW-9 2115101 4369 20 80 2289 -- <50 0 <0 500 <0 500 <0 500 <0 500 <2 5 -- <br /> 6/1/01 21 18 2251 -038 <50 <0 50 <0 50 <0 50 <0 50 <2 5 - <br /> 9111/01 2241 2128 -123 <50 <0 50 <0 50 <0 50 <0 50 <2 5 138 <br /> MW-10 2115101 4209 1902 2307 <50 0 <0 500 <0 500 <0 500 <0 500 <2 5 - <br /> 6/1/01 1940 22 69 -038 <50 <0 50 <0 50 <0 50 <0 50 <2 5 - <br /> 9111/01 2097 21 12 -157 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 81 <br /> (Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl tert-butyl ether <br /> DO=Dissolved oxygen <br /> ft=feet <br /> MSL=mean sea level <br /> TOC=top of casing <br /> ppb=parts per billion <br /> mg/L=milligrams per liter <br /> <=below given laboratory detection limit <br /> =not measured or analyzed <br /> Prolects/ARCO/6020/ReportslTables/gwtables6020 As <br />