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other reports and they were consistent with the findings from other reports. {Turpin, 1984; <br />Allen, 1984; Turpin, 1984) <br />FIIVDINGS <br />Tire Fire Composition <br />The EPA's report entitled Burning Tires for Fuef and Ttre Pyrolysis: Air Implications (EPA, <br />1991) shows the chemical products of burned tires as follows: <br />64-8746 carbon <br />5 - 746 hydrogen <br />2 - 54b oxygen <br />< 14b nitrogen <br />1 - 246 sulfur <br />3 -2596 ash <br />22 separate metals <br />Ranges are reported because the amount varies depending on the type of tire. <br />A summary by the Goodyear Tire and Rubber Company indicated fire composition to be as <br />follows: synthetic rubber, natural rubber, sulfur and compounds, clay phenolic resin, oil, <br />fabric, petroleum waxes, pigments, carbon black, fatty acids, inert materials and wire. <br />Target Chemical Selection <br />The Acurex data set contained 82 chemicals and the EPA data set contained 68 chemicals. A <br />list of all the chemicals and their maximum reported values is shown in Table 1. From these <br />150 chemicals, 38 were selected as target chemicals. Table 2 gives the list of target chemicals <br />and the criterion for selection. This selection was based upon the decision process shown in <br />Figure 1. <br />Suspected or Confu-med Auman Carcinogens <br />Table 3 lists 26 chemicals that aze suspected or confirmed human carcinogens and their <br />maximum reported value. Al] suspected or confirmed carcinogens were chosen as target <br />chemicals regardless of their value. Cancer is considered a result of chronic exposure. It is <br />unlikely that there would be a chronic exposure to smoke from a fire fire, and therefore, <br />unlikely that someone would contract cancer from a fire fire. However, extra caution in <br />protecting human health is being taken by including the carcinogens as target chemicals. <br />Many of the chemicals that ate detected are poiycyclic aromatic hydrocarbons (PAHs). PAHs <br />are a class of compounds consisting of various arrangements and substitutions of multiple <br />benzene rings. They are formed during the incomplete burning of coal, oil and gas, garbage, <br />