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Safety and Health Plan <br />Tracy Ridge Tracy, California <br />March 27, 2019 Terracon Project No. NA187052.1 lierracon <br />Fuel oil No. 6, or "Bunker Fuel", is of low volatility. It can be irritating to the eyes and skin. This <br />substance is likely to contain polynuclear aromatic hydrocarbons (PNA's), some of which are <br />considered carcinogenic. PNA's present a skin contact hazard. Avoid skin contact with potentially <br />contaminated site materials. <br />BENZENE <br />Permissible Exposure Limit <br />1 ppm OSHA PEL <br />5 ppm OSHA 15 min STEL <br />0.5 ppm OSHA Action Level <br />Benzene is a central nervous system depressant and an eye and skin irritant. Poisoning may <br />cause hemorrhages and immunosuppression. A relationship has been discovered between <br />benzene exposure and leukemia. Benzene is regulated as an occupational carcinogen. Acute <br />exposure may cause dizziness, excitation, weakness, headache, giddiness, breathlessness and <br />chest constriction. <br />TOLUENE <br />Permissible Exposure Limit <br />20 ppm ACGIH TLV <br />(Skin Absorbable) <br />Toluene is an eye, skin and mucous membrane irritant and a central nervous system depressant. <br />Poisoning may affect the liver and kidneys. Prolonged exposure may affect the heart and blood. <br />The ingestion of alcoholic beverages may enhance the toxic effects of toluene. Symptoms of <br />exposure include respiratory tract irritation, headache, dizziness and eye irritation. Toluene may <br />be absorbed to the bloodstream via skin contact. <br />ETHYL BENZENE <br />Permissible Exposure Limit <br />20 ppm ACGIH TLV <br />Ethyl benzene is a skin, eye and mucous membrane irritant. It is moderately toxic by ingestion <br />and slightly toxic by skin absorption. Ethyl benzene is a central nervous system depressant. <br />Poisoning may affect the liver. Symptoms of exposure may include a sense of chest constriction <br />and nervous disorders. Skin contact may result in first and second degree burns. The odor can <br />be detected at 140 ppm and irritation occurs at —200 ppm. <br />XYLENE <br />Permissible Exposure Limit <br />100 ppm OSHA PEL <br />7