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SITE HEALTH & SAFETY PLAN 3. 0 JOB HAZARD ANALYSIS The possible major contaminants to be encountered on the project are Petroleum Hydrocarbons and Volatile Organic Compounds (VOCs) . i There is currently no known air concentration data available for VOCs emissions in the direct breathing zone of personnel working around the piezometers or exposed soils. Inhalation and dermal (absorption) hazards are the major area of concern, regarding the exposure to VOCs. Results of toxicological studies on animal exposure to pure concentrations of the VOCs that have been detected at the site are detailed in "Handbook of Toxic and Hazardous Chemicals", by M. Sittig (1981) , and "Dangerous Properties of Industrial Materials" , by N. Irving Sax (1984) . An additional reference source used for the development of this Site Safety Plan is the "Documentation of the Threshold Limit Values" , published by the ACGIH (American Conference of Governmental Industrial Hygienists, Inc. Gasoline Gasoline has an appearance of a clear, aromatic, volatile liquid, and is a mixture of aliphatic hydrocarbons. The flash point is listed at -500F, and has an LEL (Lower Explosive Limit) of approximately 1. 30 . The TLV for gasoline is listed as 300 ppm in air. Diesel Fuel This material currently has no TLV specifically adopted by NIOSH. However, it has been listed as a suspect carcinogen, and is currently being tested for carcinogenicity. Benzene Benzene is a common constituent of gasoline and other petroleum product materials. It is a clear, colorless liquid, with a flash point listed at 120F. The currently established TLV for Benzene is 10 ppm in air. However, the American Conference of Governmental Hygienists (ACGIH) has recommended a TLV of 1 ppm be adopted. 3