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I <br /> GeoStrategies Inc. <br /> I Unocal Corporation <br /> January 28, 1993 <br /> Page 2 <br /> Ground-water samples were collected on October 21 , 1992 Ground- <br /> water monitoring wells MW-1 , MW-2, MW-3, MW-4 and MW-5 were <br /> dry and therefore, not sampled Samples were analyzed for Total <br /> Petroleum Hydrocarbons calculated as Gasoline (TPH-Gasoline) according <br /> to EPA Method 8015 and for Benzene, Toluene, Ethylbenzene and <br /> Xylenes (BTEX) according the EPA Method 8020 These ground-water <br /> samples were analyzed by National Environmental Testing (NET) Pacific <br />` Inc , a California state certified laboratory located in Santa Rosa, <br /> California Groundwater samples from Wells MW-6, MW-7, MW-8, MW- <br /> 11 and MW-12 were also analyzed for Total Coliform and Fecal <br /> Coliform The laboratory analytical reports and Chain-of-Custody forms <br /> are presented in Appendix B TPH-Gasoline and BTEX data are <br /> presented in Table 2 A chemical concentration map for benzene is <br /> r presented on Plate 4 Ground-water sampling field methods and <br /> procedures are included in a previous GSI report dated August 4, <br /> 1992 <br /> If you have any questions, please call <br />�. GeoStrategies Inc by, <br /> Ellen C Fostersmith <br /> Geologist <br /> fLun4dqat, <br /> QR4FESSrC,yqL U0 <br /> Dune ME <br /> Senior Engineer No 046725 <br /> C 46725 ' <br /> sT CIVtI. �`a <br /> 10 ATE OF CA1.14��a <br /> Plate 1 Vicinity Map <br /> Plate 2 Site Plan <br /> Plate 3. Potentiometric Map <br /> Plate 4 Benzene Concentration Map <br /> 0 Appendix A Field Data Sheets <br /> Appendix B Laboratory Analytical Reports and Chain-of-Custody <br /> Forms <br /> 1111116 QC Review <br /> 785501-3 <br />