COMPLIANCE INFO_1985-1997 - Laserfiche WebLink

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and xylene (BTX), ethylbenzene, tetraethyl lead, and ethylene dichloride. These chemicals are volatile, flammable and moderately to extremely toxic. They present a possible inhalation, absorption and ingestion hazard to onsite personnel. They may damage an unprotected individual's liver, kidneys, central nervous system, and bone marrow. Benzene is a known human carcinogen and ethylbenzene in vapor and liquid form is a skin irritant. Gasoline vapors in high concentrations (>300 parts per million -ppm) can cause eye, nose and throat irritation, headaches, dizziness, and anesthesia. Skin contact with liquid gasoline may result in irritation, dermatitis and absorption of specific toxic petroleum fractions. OSHA and the American Conference of Governmental Industrial Hygienists (ACGIH) have established exposure limits for these chemicals. The Permissible Exposure Limit (PEL) is the maximum permitted 8 -hour time -weighted average (TWA) airborne contaminant that an employee may be exposed to. The Short Term Exposure Limit (STEL) is a 15 -minute TWA exposure which is not to be exceeded at any time during a workday even if the 8 -hour TWA is below the PEL. The Ceiling Limit (CL) is the maximum concentration of an airborne contaminant to which an employee may be exposed at any time. PEL, STEL and CL are measured in parts er million (ppm) and/or milligrams per meter cubed (mg/m ). Exposure limitz established by OSHA and ACGIH for contaminants which may become •• at this site are listed in the table below, Values are • OSHA unless otherwise noted. compognd M M STEL CL (in ppm) (in ppm) (in ppm) (in ppm) Gasoline 300 500 Benzene 1.0 5.0 0.10* 1.0* Ethyl benzene 100 100 125 Toluene 100 150 100 500 Xylene 100 150 100 300 0