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Inhalation and dermal (absorption) hazards are the major area of concern, regarding the <br />exposure to VOCs. Results of toxicological studies on animal exposure to pure <br />concentrations of the VOCs that have been detected at the site are detailed in Handbook of <br />Toxic and Hazardous Chemicals, by M. Sittig (1981), and Dangerous Properties of <br />Industrial Materials, by N. Irving Sax (1984). An additional reference source used for the <br />development of this Site Safety Plan is the Documentation of the Threshold Limit Values, <br />published by the ACGIH (American Conference of Governmental Industrial Hygienists, <br />Inc.). <br />Gasoline <br />Gasoline has an appearance of a clear, aromatic, volatile liquid, and is a mixture of aliphatic <br />hydrocarbons. The flash point is listed at -50 degrees Fahrenheit, and has an LEL (Lower <br />Explosive Limit) of approximately 1.3 percent. <br />The TLV for gasoline is listed as 300 parts per million (ppm) in air. <br />Diesel Fuel <br />This material currently has no TLV specifically adopted by NIOSH. However, it has been <br />listed as a suspected carcinogen, and is currently being tested for carcinogenicity. <br />Benzene <br />Benzene is a common constituent of gasoline and other petroleum product materials. It is a <br />clear, colorless liquid, with a flash point listed at 12 degrees Fahrenheit. <br />The currently established TLV for Benzene is 10 ppm in air. However, the American <br />Conference of Governmental Hygienists (ACGIH) has recommended a TLV of 1 ppm be <br />adopted. <br />Toluene <br />This material is a flammable, colorless liquid, with a benzol -like odor. The flash point is <br />listed at 40 degrees Fahrenheit. The currently established TLV is 100 ppm in air. <br />920-124.1A/SSP.DOC 3 December 8, 1997 <br />