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LFR Inc. lead smelting process. The previous site owner was likely melting wheel balancing weights into lead ingots that were then stored in a semi-truck trailer at the Site. The semi-truck trailer burned and melted during the tire fire. As a result, the trailer floor melted and the lead ingots were deposited on the ground surface in the area where the trailer was parked. SCI was directed by the CIWMB to recycle the slab of lead before excavation and characterization sampling. The slab of lead was picked up by a licensed metal-recycling company (Universal Recyclers of Lodi, California) in February 2003. Soil in the area shown in Figure 2 was excavated to approximately 3 to 5 feet bgs to remove the lead- affected soil. LFR set up an approximate 10-foot grid, collected soil samples from the excavated area, and submitted the samples to the laboratory for analysis of lead. Based on the analytical results, it was determined that the Class I RCRA hazardous waste was successfully removed from the area. The excavated soil was transported to Chemical Waste Management's Kettleman City Class I landfill for disposal (Kettleman City Landfill) as Class I RCRA hazardous waste. Additional confirmation sampling was necessary to confirm that hazardous concentrations of lead were removed from the soil. A 10-foot sampling grid was set up in the lead-affected soil area and soil samples were collected from the soil within the grid to confirm that hazardous concentrations of lead had been removed. The soil samples were analyzed on site with an X-ray fluorescence (XRF) spectroscope by the DTSC Project Manager and 10 percent of those samples were submitted to an analytical laboratory for XRF validation. In this case, analytical results were evaluated and additional excavation was recommended in areas where soil sampling results indicated that concentrations of lead were above the DTSC soil screening action level of 150 mg/kg as recommended in the DTSC's Preliminary Endangerment Assessment Guidance Manual (DTSC 1999). As a conservative measure, soil was excavated and additional soil samples were collected and analyzed until lead concentrations were below 100 mg/kg. Based on XRF field screening and laboratory analytical results, soil containing lead concentrations exceeding 100 mg/kg was removed from the sampled area. The excavated soil was transported to Kettleman City Landfill for disposal as a Class I non- RCRA waste. Details regarding the confirmation sampling results are provided in the report entitled, "Field Screening and Laboratory Analytical Results for the Lead- Affected Soil Area, Tracy Tire Fire Site, San Joaquin County, California," prepared by LFR and dated January 21, 2005. 5.4.3 Burn Pile Areas Six reports (see Section 3.0 of this report for reports numbered 21, 22, 24, 27, 31, and 32) were submitted to the CIWMB, DTSC, and RWQCB providing the results of confirmation soil samples collected in the 33 of 34 distinct burn pile areas. BP14 was incorrectly identified as a tire pile burn area based on review of aerial photographs. After conducting a site inspection of BP14, LFR and the CIWMB concluded that there rpt-RA_sunun-Nov06-fina1-09025 Page 19