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} CALIFORNIA ENVIRONMENTAL QUALITYACT DRAFT NEGATIVE DECLARATION Project Title: Remedial Action Plan for Pyrolytic Oil—and Metals—Affected Soil at the Tracy Tire Fire Site State Clearinghouse Number: I Contact Person and Telephone#: Chris Sherman, 916-255-3706 Project Location(include County): The Tracy Tire Fire Site is located at 29425 South MacArthur Drive, approximately 3 miles south of Tracy in San Joaquin County, California.The geographic 1 coordinates for the Site are 37°41' 12"north latitude and 121°25' 21"west longitude(Section 9, Township 3 south,Range 5 east of the Mount Diablo Base Meridian). Project Description: The project described herein("the project")has been proposed to remediate contaminants present at the Tracy Tire Fire Site("the Site")as a result of the tire fire(Figure 1).An Initial Study has been prepared to evaluate the potential for impacts to the Site due to remediation activities.A Draft Remedial Action Plan(RAP)has been prepared as an interim remedial measure to remove the majority of Class I California non-Resource Conservation and Recovery Act(non-RCRA) hazardous waste and Class II designated waste identified at the Site. Once the majority of the waste has been removed from the Site,the California Integrated Waste Management Board(CIWMB)will authorize a comprehensive remedial investigation/feasibility study(RDFS) and preparation of a Final RAP.Clean up criteria will not be required for the interim removal activity,but will be established and approved by i the involved State regulatory agencies during preparation of a later Final RAP. Based on data from the preliminary RI/FS, impact to soil at the proposed Site from contaminants related to the fire fire has occurred. Seven metals were analyzed using soluble threshold limit concentration r (STLC),total threshold limit concentration(TTLC),and toxicity characteristic leaching procedure j (TCLP)methods.Zinc was the only metal that significantly exceeded the STLC(250 mg/1)and the TTLC (>30,000 mg/kg).No metals exceeded the representative action level for the TCLP.Impact to soil appears to be limited to those areas where tires burned and primarily consists of elevated concentrations of metals. Contaminated soil and ash and other residual materials such as steel radials and solidified pyrolytic oil will be excavated and disposed to mitigate impact on groundwater beneath the Site. The Site consists of 34 distinct bum-pile areas(Figure 2).The bum-pile areas have been grouped into three separate units for phased excavation.Unit 1 is the most northerly of the three units and consists of bum-pile areas 1, 2,3,4, 5,and 9.Unit 2 is located adjacent to Unit 1 on the south and consists of bum- pile areas 6, 7, 8, 10, 11,and 12.Unit 3 is located adjacent to Unit 2 on the south and east,and consists of bum-pile areas 13 -34. Based on the initial geodetic survey of the 34 bum piles,there is approximately 564,000 square feet of bum pile area.Assuming the removal of approximately the top two feet,there will be an initial removal of approximately 1.13 million cubic feet(41,800 cubic yards) of ash and soil.The excavation extent may be modified in the field based on visual observation to assure that soil obviously affected by the fire is removed.The contaminated soil from the bum areas will be transported to Class I and II landfill facilities depending on soil characterization results.The Work Plan to conduct these activities will be prepared by the CIWMB field contractor. i v,�