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LFR Inc. was no evidence of burnt tires or other debris; therefore, no samples were collected at BP14 for characterization. Figure 5 shows the locations of the confirmation soil sampling locations within the remaining 33 burn pile areas. Cleanup Goals Confirmation soil samples results were compared to cleanup goals established for the Site. The following discussion provides information on the cleanup goals for metals and organic compounds. Metals. LFR prepared and submitted a "Determination of Background Concentrations of Metals in Soil, Tracy Tire Fire Site," dated December 8, 2004 (LFR 2004; "the Background Report"). In response to comments included in a letter (dated April 7, 2005) to the CIWMB from the RWQCB, LFR prepared a "Revised Determination of Background Concentrations of Metals in Soil Tracy Tire Fire Site Former Royster Tire Facility, Tracy, California" ("the Revised Background Report"), dated July 20, 2005 (LFR 2005; "the Revised Background Report"). The Revised Background Report supersedes the Background Report and presents a summary of analytical results and calculated background concentrations for metals detected in background soil samples collected at the Site on July 13, 2004, and on May 2, 2005, under the guidance of the CIWMB, DTSC, and the RWQCB. Results of the statistical evaluation presented in the Revised Background Report provide a.calculated 95 percent UCL for the 10 metals detected in the background soil samples. These calculated concentrations can be used to represent background concentrations (presented in Table 1 below) for comparison with metals data collected during remedial activities at the Site. Table 1: Calculated Background Metals Concentrations Analyte Arsenic Barium Beryllium Chromium Cobalt Copper Lead Nickel Vanadium Zinc Background Concentration 6.6 209 0.46 32 10.4 48 19.3 38 43 121 (mg/kg) Organics. Cleanup goals proposed for VOCs and SVOCs in soil were presented in the "Draft Screening Evaluation and Recommended Cleanup Goals for VOCs, SVOCs, and TRPH in Soil, Tracy Tire Fire Site," prepared by LFR and dated October 27, 2005, and provided to the CIWMB, DTSC, and RWQCB. To respond to the RWQCB's request, soil cleanup goals for organic compounds were calculated using the "Designated Level Methodology (DLM) for Waste Classification and Cleanup Level Determination" (copyright 1986), prepared by Jon Marshack of the Central Valley RWQCB and dated June 1989 (RWQCB 1989). Water-quality goals, leachability factors, and attenuation factors were used to calculate cleanup goals (or total designated Page 20 rpt-RA_summ-Nov06-final-09025TNC