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i <br /> 3.0 JOB HAZARD EVALUATION <br /> r <br /> 3.1 OVERALL HAZARD EVALUATION <br /> Hazard Level: High ( } Moderate O Low (X) Unknown ( ) <br /> Hazard Type: Liquid (X) Solid (X) Sludge O Vapor/Gas (X) <br /> Known or suspected hazardous materials present on-site: <br /> (1) Petroleum Hydrocarbons <br /> (2) BTEX Compounds <br /> Characterisitcs of hazardous materials included above_ (complete for each chemical present): <br /> Petroleum Hydrocarbons: . <br /> This class of compounds causes irritation of the upper respiratory tract, and nervous <br /> system effects ranging from dizziness and headaches to coma and respiratory arrest if <br /> inhaled in large quantities. Ingestion causes throat, lung, and stomach irritation. Skin <br /> exposure causes a burning sensation_. <br /> ., Benzene: <br /> Benzene is a component of gasoline that can cause liver and kidney damage. Benzene <br /> . can also affect the bone marrow resulting in blood cell changes. <br /> Toluene: <br /> This chemical is irritating to the skin, eyes, nose and throat. Inhalation .may cause <br /> nausea, vomiting, headache, dizziness, difficult breathing or loss of consciousness. <br /> Xylene: <br /> A component of gasoline can cause minor effects to the pulmonary system. Xylene can <br /> cause acute Central Nervous System Depression. <br /> TETRA TECH: HEALTH AND SAFETY PLAN PAGE 8 <br /> �r <br />