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1 <br /> 1 <br /> 1 4.0 Data Evaluation <br /> 1 4.1 Soil and Groundwater Investigation <br /> Petroleum hydrocarbons were not detected in soil samples collected during this investigation. <br /> Groundwater grab samples collected from the two HSA locations had detectable concentrations <br /> ! of TPHd and TPHo. The laboratory report indicated the diesel chromatography pattern was not <br /> typical and may be weathered diesel. This may indicate the hydrocarbons detected in the <br /> 1 groundwater are from an old release. <br /> 1 <br /> i <br /> i <br /> 1 <br /> 1 <br /> ! <br /> i <br /> 1 <br /> 1 <br /> 1 -IISACRFPTIG0 OWWOP12002LPR.BPJ61B31B34760.2a@.dac <br /> 4-1 <br />