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C A M B R I A <br /> HYDROCARBON DISTRIBUTION IN SOIL <br /> No TPHg or benzene were detected in soil samples collected from any of the borings MTBE <br /> was detected in soil samples collected from boring CPT-1 at depths between 30 and 50 fbg at <br /> concentrations ranging from 0 9 to 3 7 ppm, but below the detection limit at depths of 60, 70, 80, <br /> and 90 fbg MTBE was not detected in soil from the well borings <br /> The soil chemical analytical data are summarized in Table 2 and TPHg, benzene, and MTBE <br /> concentrations are presented on Figure 2 Laboratory analytical reports are presented in <br /> Appendix E <br /> HYDROCARBON DISTRIBUTION IN GROUNDWATER <br /> Groundwater samples from boring CPT-1 contained 58 ppb TPHg at a depth of 74 fbg TPHg <br /> was not detected in deeper groundwater samples No benzene was detected in boring CPT-1 <br /> MTBE was detected at concentrations ranging from 15 to 57 ppb at depths between 71 and <br /> 92 fbg 1,2-DCA was detected in the groundwater sample collected at 74 fbg at a concentration <br /> of 2 4 ppb No other fuel oxygenates or lead scavengers were detected in groundwater samples <br /> collected from the boring CPT-1 <br /> Wells MW-1 and MW-4 contained 61 and 89 ppb TPHg, respectively No benzene was detected <br /> in any of the wells MTBE was detected in groundwater samples colIectedd from wells MW-1 <br /> and MW-3 at concentrations of 34 and 2 6 ppb, respectively No other fuel oxygenates or lead <br /> scavengers were detected in groundwater samples collected from the wells <br /> Groundwater chemical analytical data for CPT-1 and the groundwater monitoring wells are <br /> summarized in Table 3 Groundwater data for the monitoring wells are also summarized in <br /> Blaine's Well Concentrations table (included in Appendix D) TPHg, benzene, and MTBE <br /> concentrations for CPT-1 and benzene and MTBE concentrations for the wells are presented on <br /> Figure 3 The certified laboratory analytical report for CPT-1 is included in Appendix E and the <br /> laboratory report for the monitoring wells is presented in Blaine's report (Appendix D) <br /> SENSITIVE RECEPTOR SURVEY <br /> Cambria reviewed California Department of Water Resources (DWR) records to identify water <br /> production wells located within a 2,000-foot radius of the site and performed a 500-foot radius <br /> • door-to-door survey of private and commercial properties to identify any undocumented water <br /> 1359 6 <br />