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OCT <br /> ' 1, 2-Drbromoethane (EDB) and 1, 2-Di-chloroethane (1, 2-DCA) <br /> using EPA Method 8260 <br /> ' The samples were analyzed on a normal 5-day turnaround basis . <br /> 6 0 INVESTIGATION RESULTS <br /> ' The field observations and laboratory analytical results are <br /> presented below. The Laboratory analytical results are presented <br /> below and summarized in Tables 1 and 2 . Laboratory certificates <br /> are included in Appendix A. <br /> 6 . 1 Fmeld Observations <br /> The Site was generally underlain by a stiff brown silty clay to the <br /> total depth of the borings Groundwater was encountered at a depth <br /> ' of approximately 28 to 30 feet bgs . <br /> The soil samples were neither stained nor discolored, with the <br /> exception of the sediments encountered at boring SB-1 at a depth <br /> ranging from approximately 20 feet to 30 feet bgs Additionally, <br /> no odor was detected from the soil and groundwater samples, with <br /> the exception of the soil and groundwater samples collected from <br /> boring SB-1 at depths of approximately 20, 25, and 30 feet bgs <br /> 6 2 Laboratory Analytical Results <br /> ' Analysis of the soil samples indicated that <br /> ° TPHg concentrations ranged from less than 1 . 0 mg/kg (not <br /> detected) to 94 mg/kg <br /> ° TPHd concentrations ranged from less than 1. 0 mg/kg (not <br /> detected) to 1, 400 mg/kg. <br /> ° TPHmo concentrations .ranged from less than 5 . 0 mg/kg (not <br /> detected) to 1, 300 mg/kg <br /> ' BTEX concentrations were less than 0 . 005 mg/kg to 0 . 025 mg/kg <br /> (not detected) <br /> EDB concentrations were less than 0 005 mg/kg to 0 . 050 mg/kg <br /> (not detected) . <br /> 4 <br /> 1 <br />