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Table 2-Groundwater Chemical Analytical Data <br /> Former Unocal Service Station#0187 <br /> 437 East Miner Avenue <br /> Stockton,California <br /> Sample Sample TOC DTW GWE TPHg Benzene Toluene Ethylbenzene Xylenes MtBE"' TBA DIPE ETBE TAME <br /> No Date (feet MSL) (feet) (feet MSL) (ppb) (ppb) (ppb) (ppb) (pph) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> NP-2-22 11120/2000171 1161 2574 -14 13 431"1 42 406 225 285 <5 001<2 00 <100 Q 00 <2 00 Q 00 <br /> 1217100 1161 ---- ---- 630124 548 329 302 157 ---- ---- ---- ---- <br /> NP-2-60 11/20/2000181 1163 2601 -1438 13,300121 4,350 191 498 527 <500/<66 7 <3330 <66 7 <66 7 <66 7 <br /> 1217100 1163 ---- ---- 20,400121 5,580 257 587 678 ---- ---- ---- ---- ---- <br /> NP-2-116 11120/2000191 1179 2752 -1574 211121 245 3 13 119 224 <5 001Q 00 <100 <2 00 <2 00 <2 00 <br /> 1217100 1178 ---- ---- 126121 166 0 601 0 594 <0 500 ---- ---- ---- ---- <br /> ---- <br /> Trip Blank 11/20/00 ---- ---- ---- <50 0 <0 500 <0 500 <0 500 <0 500 <5 001---- ---- ---- ---- ---- <br /> Explanation. Analytical Method <br /> TPHg=Total Petroleum Hydrocarbons as gasoline TPHg BTEX,and MtBE by DHS LUFT Method <br /> BTEX=Benzene Toluene Ethylberizene Xylenes Oxygenates by EPA Method 82606 <br /> MtBE=Methyl Cert-butyi ether <br /> THA=Tett-butyl alcohol Analytical Laboratory <br /> DIPS=Di-isopropyl ether Sequoia Analytical(FLAP#1271&#2360) <br /> ETBE=Ethyl tert-butyl ether <br /> TAME=Tert-amyl methyl ether <br /> TOC=Top of casing <br /> DTW=Depth to water <br /> GWE=Groundwater elevation <br /> MSL=Mean sea level <br /> ppb=parts per billion <br /> Notes. <br /> 1iiMtI3E by DHS LUFT Method/EPA Method 8260E <br /> i2tChromatogram Pattern Gasolme C6-C12 <br /> 11ISample collected at top of water column in well using disposable bailer/sample collected from screened interval in well(bottom of well)using bomb sampler <br /> 14'Reported as NP-I-111 in analytical report and on Monitoring Well Observation Sheet(Appendix D)due to morntonng and sampling error <br /> IslReported as NP-1-22 in analytical report and on Monitoring Well Observation Sheet(Appendix D)due to monitoring and sampling error <br /> 240042 08 <br />