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I <br /> I <br /> 3.0 JOB HAZARD ANALYSIS <br /> A. CHEMICAL HAZARDS <br /> The possible major contaminants to be encountered on the project are Petroleum <br /> Hydrocarbons and volatile organic compounds (VOCs). It is not anticipated that VOC <br /> emissions in the direct breathing zone of personnel working around the monitoring wells or <br /> i borings will be higher than background levels. <br /> 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 /> s 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 Valves, <br /> published by the ACGIH (American Conference of Governmental Industrial Hygienists, 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 /> f <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 /> 9110081A/SSP 3 December 22, 1997 <br /> I <br /> k <br />