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disorientation, euphoria, giddiness, and confusion. Most hydrocarbons are also very lipid soluble, which enables them to penetrate the skin easily, which can result in potential dermatitis conditions. Benzene is a colorless liquid with an aromatic odor and is considered a human carcinogen. Exposure to benzene can result in the irritation of the eyes, nose, and respiratory system. Prolonged exposure can result in giddiness, headache, and lassitude. Dermal exposure can result in a dermatitis condition. Benzene is used in this HASP as a chemical of concern because of its known toxicity. Protecting a worker against benzene exposure should be considered conservative. Benzene is a known cancer-causing agent(carcinogen). Avoid inhalation of vapors. Workers are required to wear appropriate respiratory protection for exposures to benzene in excess of the OSHA Permissible Exposure Limit(PEL) of 1 PPM. Toluene is a component of gasoline, which may pose a health risk to workers performing tank cleaning and removal operations. Health hazards associated with toluene exposure include; irritation of the eyes and nose, fatigue, weakness, confusion, dizziness, headache, dilated pupils, lacrimation, muscle fatigue, insomnia, paresthesia, and dermatitis. Long-term (chronic) exposure can result in liver and kidney damage. Workers must be instructed to prevent skin and eye contact, and avoid breathing vapors. The OSHA PEL for toluene is 200 PPM, averaged over an eight- (8) hour workday. The ceiling limit for toluene exposure is 300 PPM, and the ten(10) minute peak exposure is 500 PPM. Toluene, in its pure form, is a colorless flammable liquid with a sweet pungent, benzene-like odor. Personal protective equipment(PPE) for prevention of toluene exposure to workers at this job site, if detected, includes they use a half or full-face air purifying respirator equipped with organic vapor cartridges. Skin exposure can be prevented by the use of rubber or nitrile gloves,boots. PHYSICAL HAZARDS Hazards associated with AST installation activities most commonly are generated with the operation of heavy equipment, which produces elevated levels of noise, and may induce dust into the air. To reduce the risk of noise during the operations, field personnel will wear earplugs when necessary. Should dust pose a hazard, particulate filter dust masks rated as N95 are to be worn. Additionally, the following procedures will be followed during work activities: the AST area is to be inspected for hazards before work begins; personnel, other than the equipment operator and his helpers, are to stay clear of the equipment; the operator will be in/on the equipment at all times when the equipment is running; all equipment will be safely stored/racked; Lifting equipment, at all times, will be in good and operable condition-malfunctioning equipment will not be used, or the operation will be stopped for repair of equipment. JUL 14 2017 Eby J� l