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Preliminary Investigation and Evaluation Report— California Cedar Products <br /> Up-gradient sample B2-3 collected at 23 feet bgs contained toluene was at 0 89 <br /> mg/Kg, ethylbenzene at 0 31 mg/kg, and total xylenes at 0 02 mg/Kg <br /> Cross-gradient sample B3-3 collected at 23 feet bgs contained benzene at 1 5 <br /> mg/Kg, ethylbenzene at 4 1 mg/kg, and total xylenes at 2 3 mg/Kg <br /> Down-gradient sample 84-3 collected at 23 feet bgs only contained ethylbenzene at <br /> 0 45 mg/kg <br /> 3.3 Groundwater Analytical Results <br /> Groundwater grab sample 134-W, was collected from probe B4 located on the <br /> groundwater down-gradient side of the tank pit Hydropunch was used to expose <br /> the aquifer from the depth of 23 feet bgs to 19 feet bgs The analytical results of the <br /> groundwater grab sampling are presented below <br /> 3.3.1 Groundwater TPH-d <br /> TPH-d was detected in fine sandy soil at a concentration of 2,600 ug/L <br /> 3.3.2 Groundwater BTEX and Fuel Oxygenates <br /> Only two aromatic fuel hydrocarbons were detected Ethylbenzene was detected at <br /> 34 ug/L, and xylenes were detected at 7 1 ug/L Benzene and toluene were below <br /> detection limits The five fuel oxygenates were also below detection limits <br /> 34 Quality Control <br /> Quality control samples included a trip blank (prepared by McCampbell Analytical) <br /> No target analytes were detected in trip blank sample <br /> RAB Consulting <br /> 7 <br />