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LFR Inc. <br /> • Soil Characterization Sampling Results for Burn Pile Areas 1 through 6 and the <br /> North Slope, Tracy Tire Fire Site, Former Royster Tire Facility, Tracy, California, <br /> prepared by LFR and dated May 12, 2005 <br /> Appendix C includes the figures with confirmation soil sampling analytical results for <br /> each of the burn pile areas that were included in the reports outlined above. The project <br /> objectives were met and soil containing hazardous concentrations of metals was <br /> removed from the Burn Pile Areas, Southeast Staging Area, and the North Slope Area <br /> in accordance with the RAP (LFR 2003b). Based on visual inspection and laboratory <br /> analytical results, the excavated soil was transported to a California-permitted Class I <br /> landfill facility (due to elevated zinc concentrations). <br /> Class H Waste Removal. Excavation activities were conducted from mid-2005 <br /> through April 2006 to remove pyrolytic oil-affected soil from the Site. LFR prepared <br /> the report entitled, "Soil Confirmation Sampling Results for Pyrolytic Oil-Affected <br /> Areas at the Tracy Tire Fire Site Former Royster Tire Disposal Facility, Tracy, <br /> California" ("the Pyrolytic Oil Confirmation Sampling Report"), dated May 17, 2006 <br /> (LFR 2006b). Appendix C includes the figures with confirmation soil sampling <br /> analytical results for each of the burn pile areas that were included in the Pyrolytic Oil <br /> Confirmation Sampling Report. <br /> The Pyrolytic Oil Confirmation Sampling Report provides a summary of excavation <br /> activities and analytical results for soil samples collected from burn pile areas affected <br /> with pyrolytic oil (a petroleum hydrocarbon with carbon chains ranging from C10-C24 <br /> [diesel range] to C24-C36 [motor oil range] derived from melted tires). Excavation and <br /> soil sampling activities were performed in accordance with the RAP (LFR 2003b). <br /> Pyrolytic oil-affected soil detected at or near Burn Pile Areas 1 through 4, 10, 12, 18, <br /> 24, 25, and 30 (BPO1, BP02, BP03, BP04, BP10, BP12, BP18, BP24, BP25, and <br /> BP30) were excavated by SCI to remove elevated concentrations of organic compounds <br /> known to be present in the soil. The excavated soil was transported to Forward <br /> Landfill, a licensed Class II landfill located in Stockton, California. <br /> LFR personnel collected confirmation soil samples from the burn pile areas identified <br /> above to characterize the remaining soil and verify that soil containing elevated <br /> concentrations of organic compounds had been removed. <br /> During excavation activities in the northwestern area of the Site (within BP02, BP03, <br /> and BP04), pyrolytic oil-affected soil was observed to extend into the groundwater. <br /> Based on these observations and based on soil samples collected from the slope by use <br /> of a hydraulic lift (Photographs 10 and 11), it was determined that soil at the base of <br /> the slope along the northwestern extent of the Site would need to be removed by <br /> excavation. The pyrolytic oil-affected areas within BP02, BP03, and BP04 were <br /> excavated to below the static groundwater table. Confirmation soil samples were not <br /> Page 24 rpt-RA_summ-Nov06-final-09025:FNC <br />