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AOC Work Plans <br /> In 2001,AGE drilled one boring(PB9)adjacent to the former teepee strut ire. One soil and one <br /> grab groundwater sample were submitted for laboratory analyses for TPH s gasoline(TPHg), <br /> TPHd,TPHmo, VOCs,and SVOCs from this boring. Metals concentratio s detected in the soil <br /> sample were at or below background levels and TPHg,TPHd,TPHmo,VOCs and SVOCs were all <br /> below reporting limits in soil and groundwater. All dissolved metals samp les from boring P139 <br /> were below the applicable cleanup levels. <br /> Data Gaps <br /> Additional sampling is necessary along the sidewalls and floors of the forn ter teepee structure to <br /> confirm all soils in excess of residential PRGs have been removed. <br /> Field Investigation Approach <br /> Confirmation soil sampling will be performed in the vicinity of the former teepee structure as <br /> follows. A total of ten soil samples,two samples per test pit will be collec ed. Three test pits will <br /> be excavated within the former teepee structure and two test pits will be excavated outside the <br /> boundaries of the former structure as indicated on Plate 4.3. Soil samples 'll be collected from <br /> each test pit at depths of one and three feet bgs by either driving sample tubes directly into the soils <br /> from the test pit or by driving the tube directly into the backhoe bucket. Soil samples will be <br /> analyzed for VOCs, SVOCs,Dioxins and Furans,PCBs,TPHd,TPHmo,a Lid metals. <br /> Draft <br /> KB61125 workplan-ESC MACTEC Engineering and Consulting, Inc. 31 <br /> September 28,2005 <br />