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CAMBRIA <br /> INVESTIGATION FINDINGS <br /> Groundwater samples collected from well MW-11-82 contained 770 parts per billion (ppb) <br /> TPHg, 110 ppb benzene, and 3 6 ppb methyl tertiary butyl ether (MTBE) Groundwater samples <br /> from well MW-11-122 contained 390 ppb TPHg, 36 ppb benzene, and 0 56 ppb MTBE <br /> Groundwater samples collected from well MW-18-80 contained 6,700 ppb TPHg, 1,900 ppb <br /> benzene, and <10 ppb MTBE Groundwater samples collected from MW-18-120 contained 430 <br /> ppb TPHg,49 ppb benzene, and<0 50 ppb MTBE <br /> Groundwater samples collected from well MW-19-81 contained 63,000 ppb TPHg, 8,800 ppb <br /> benzene, and 450 ppb MTBE Groundwater samples collected from MW-19-120 contained <br /> 11,000 ppb TPHg, 520 ppb benzene, and 9 0 ppb MTBE <br /> Groundwater chemical analytical data are summarized in Blaine's table (Appendix D) and <br /> presented on Figure 3 The certified analytical reports for the groundwater samples are presented <br /> in Appendix D <br /> Groundwater elevation measurements collected on September 27, 2002 for the new deep <br /> screened wells are shown in the table below (and In Blaine's groundwater monitoring report — <br /> Appendix D) The groundwater elevation data for well MW-11 is included for comparison <br /> purposes <br /> Groundwater Elevation Data— September 27, 2002 <br /> Well Groundwater Elevation <br /> MW-11 -1414 <br /> MW-11-82 -1470 <br /> MW-11-122 -1476 <br /> MW-18-80 -1421 <br /> MW-18-120 -1430 <br /> MW-19-81 -1419 <br /> MW-19-120 -14 25 <br /> These data show that the groundwater elevations for the wells screened from approximately 110 <br /> to 120 fbg are slightly deeper than groundwater elevations in the wells screened from <br /> approximately 70 to 80 fbg The groundwater elevation of Well MW-11 was higher than the <br /> . groundwater elevations of the MW-11-82/MW-11-122 well cluster <br /> 1399 5 <br />