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f ' <br /> Table 2 - Groundwater Chemical Analytical Data <br /> Former Unocal Service Station#0123 V` <br /> 1034 Central Avenue <br /> Tracy,California <br /> Well/Sample Sample TOC DTW GWE TPHd TPHg Benzene Toluene Ethylbenzene Xylenes MtBE <br /> No Date (feet MSL) (feet bloc) (feet MSL) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-1 1216100 4858 ---- ---- Well not monitored or sampled,inaccessible <br /> U-2 1216100 4831 964 3867 37011 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <br /> U-3 1216100 4889 1003 3886 39011 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <br /> U-4 1216100 4830 968 3862 37011 149 368 <0 500 0 969 <0 500 <2 50 <br /> U-5 12/6100 4967 1064 3903 360111 <50 0 <0 500 , <0 500 <0 500 <0 500 <2 50 <br /> U-6 1216100 4832 996 3836 43011 <50 0 <G 500 <0 500 <0 500 <0 500 <2 50 <br /> U-7 1216100 4853 1006 3847 42011 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <br /> U-8 1216100 4797 934 3863 29011 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <br /> I <br /> TB-LB 1216100 ---- ---- ---- <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 <br /> Explanation, Analytical Method <br /> TPHg=Total Petroleum Hydrocarbons as gasoline TPHg,BTEX 8c MtBE by DHS LUFT Method <br /> MtBE=Methyl tert-Butyl Ether TPHd by DHS LUFT Method with Silica Gel Cleanup <br /> BTEX=benzene,toluene,ethylbenzene,xylenes <br /> TPHd=Total Petroleum Hydrocarbons as diesel Analytical Laboratories <br /> ppb=Parts per billion Sequoia Analytical(ELAP#1624) <br /> TOC=Top of Casing <br /> DTW=Depth to Water Notes, <br /> GWE=Groundwater Elevation 111Reported as diesel range hydrocarbons based on discrete peaks on the <br /> bloc=below top of casing chromatograms(Appendix G) Upon further review,Sequoia Analytical <br /> MSL=Mean sea level indicated that the peaks are not caused by diesel,nor did any other type <br /> of petroleum hydrocarbons cause them <br /> 24007305 <br />