COMPLIANCE INFO_2024 FINAL SITE CHARACTERIZATION WORK PLAN

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Site Health and Safety Plan Page 9 Symptoms of exposure may include headaches, loss of coordination, dizziness and confusion. High levels of exposure may cause high in respiratory irritation, skin irritation, and difficulty breathing. The OSHA PEL for xylene is 435 mg/m3 (100 ppm). 3.3.7 Trichloroethylene CAS # 79-01-6 Trichloroethylene is a halogenated alkene that exists at room temperature as a clear, colorless, or blue freely flowing liquid with a slight solvent odor. Trichloroethylene is slightly soluble in water, soluble in ethanol, acetone, diethyl ether, and chloroform, and is miscible in oil. Trichloroethylene is used as an intermediate in the production of hydrofluorocarbons, refrigerants, and is a degreaser for metal parts. Other uses include spot removal in the dry- cleaning industry, vapor and coal decreasing operations for metal products, electronics and electronic equipment, and miscellaneous manufacturing applications. Trichloroethylene is also been used as an industrial solvent in the rubber industry, in paints, lacquers, varnishes, adhesives, and paint strippers. Workers are principally exposed to print trichloroethylene by inhalation and through skin contact with vapors and liquids. Ingestion of contaminated water and food items represents an additional pathway of potential exposure to trichloroethylene. Symptoms of exposure to trichloroethylene may include headache, high irritation, dizziness, airway irritation, weakness and exhaustion. The OSHA PEL for trichloroethylene is 5,370 mg/m3 (100 ppm) Trichloroethylene is a known human carcinogen based on sufficient evidence of carcinogenicity from studies in humans. 3.3.8 Tetrachloroethylene CAS # 127-18-4 Tetrachloroethylene is a halogenated alkene existing at room temperature as a colorless liquid with mildly sweet odor. It is slightly soluble in water but is miscible with alcohol, ether, chloroform, benzene and solvent hexane. Tetrachloroethylene may be oxidized in air and sunlight and reacts with chemically active metals (e.g., barium or lithium). Tetrachloroethylene is used primarily as a cleaning solvent and as a chemical precursor for fluorocarbons. Tetrachloroethylene is also been used as an insulating fluid and cooling gas and electrical transformers, as paint removers, solvents and printing inks, and adhesive formulations, paper coatings, and leather treatments. Moreover, tetrachloroethylene is commonly found in aerosol formulations such as water repellents, automotive and break cleaners, silicone lubricants, and spot removers. The primary routes of exposure to tetrachloroethylene are inhalation and ingestion of contaminated water or food. Dermal exposure may occur, but may be considered less than inhalation or ingestion.