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TABLE 2 - GROUNDWATER CHEMICAL ANALYTICAL DATA <br /> Former Unocal Service Station No. 0187 <br /> 437 East Miner Avenue <br /> Stockton, California <br /> Ethyl- Total <br /> Well ED/ Date DTW GWE TPHg Benzene Toluene benzene Xylenes MTBE <br /> TOC (ft) Collected (feet) (msl) (Ppb) (ppb) ( b) (Ppb) (22b) (22b) <br /> U-9/ 8125197 3298 -2106 9901 130 <25 30 <25 12 <br /> 1192 <br /> Tnp Blank ---- ---- ---- <50 <0 50 <0 50 <0 50 <0 50 <25 <br /> Explanation <br /> TOC = Top of casing elevation Analytical Laboratory <br /> (ft) = feet Sequoia Analytical (ELAP€11210) <br /> DTW = Depth to Water <br /> GWE = Groundwater elevation Analytical Methods <br /> msl = Measurement referenced relative to mean sea Ievel TPHg/BTEX/MTBE = EPA Method 8015 Mod/8020 <br /> TPHg = Total Petroleum Hydrocarbons as gasoline <br /> BTEX = benzene, toluene, ethylbenzene, total xylenes <br /> MTBE = methyl-t-butyl-ether <br /> ppb = parts per billion <br /> Chromatogram pattern indicated unidentified hydrocarbons C6-C12 <br /> ---- = not applicable <br /> 482721 <br />