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taking air samples)from the time the fire was pyrolitic oil needed to be conducted. The draft RAP discovered through August 10, 1998. However, outlines cleanup alternatives considered for the emergency response activities did not include putting interim remedial action,and proposes one alternative the fire out completely. as the most effective. The draft RAP is available for public review and comment for 30 days beginning Once preliminary emergency response activities had July 29,2003 throughAu gust 29,2003. A public been performed,the Federal, State,and local meeting to accept verbal and/or written comments on agencies involved determined that the best course of the draft RAP will be held on August 18,2003 at the action to deal with the fire was to let it"burn itself Tracy Public Library. out". The evaluation criteria considered in selecting the This decision was based on several factors including interim remedial action for cleaning the Site includes: the geography of the Site,and concern that putting overall protection of human health and the water on the fire might generate excessive amounts environment;compliance with State and Federal of hazardous wastewater and in-turn,impact local requirements;long-term effectiveness and groundwater. The involved agencies continued to performance;reduction of toxicity,mobility,and monitor the Site until the fire,which steadily voluune through treatment;short-term effectiveness, diminished overtime,became small enough to be implementability; cost;regulatory agency extinguished with foam and water in December acceptance;and community acceptance. The initial 2000. Since that time,the Site has remained vacant. screening processes identifiedfive potentially viable remedial action alternatives for soil. The interum From October 15 through December 13,2001field remedial action alternatives are as follows: sampling activities were conducted to determine the impact on soil and groundwater quality at the Site #1) No Further Action due to the tire fire.Additionally,analytical data was In this alternative,all interim remedial actions would gathered to determine the extent of contamination at be discontinued No remedial action would be taken the Site and to characterize waste for removal. at the Site except continued monitoring of the Based on data collected cluing 2001,it was deter- groundwater. This alternative could cause further mined that surface soil was adversely affected by impacts to Site groundwater. the tire fire and needed to be addressed Data obtained during the field sampling activities is sum- #2)Capping marized in the"Tracy Tire Fire Site Removal Assess- This alternative would involve capping the ash, ment Report"dated October 2002,and is available burned material,and surface soil with an engineered for public review at the Tracy Public Library,20 E. earthen cap or asphalt.This interim remedial action Eaton Avenue,Tracy,California 95376, altnerative would mitigate or eliminate potential (209)831-4250. exposure pathways and significantly reduce the potential for contaminants to leach and affect In mid-March 2003,removal of surface debris(e.g. groundwater quality. However,this alternative does metal tire runs,oil filters,rusted automobiles and not remove the source of contamination from the Site debris)was conducted Debris removal did not and would require long-term operations and include removing partially burned tires or any soil that maintenance of the cap and lona term monitoring of appears to have been contaminated by the burned the groundwater to ensure protection to human tires. health and the environment. PROPOSED REMEDIAL ALTERNATIVES #3) Excavation of Pyrolitic Oil and Metals- Information obtained during previous sampling Affected Soil for Off-Site Disposal activities was analyzed and the DTSC determined This interim remedial action alternative would include that before characterization of the entire Site could excavation of ash,burned material,and pyrolytic oil- be accomplished,an interim remedial action to address ash, soil impacted by the burned tires,and and metals-affected soil for off-site disposal. This