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Levine-Fricke-Recon • • <br /> ' Section: F1-1 <br /> Date Initiated:September 23, 1996 <br /> Revision No.: 1 <br /> Date Revised:August 21, 1998 <br /> Page 1 of 4 <br /> CHEMICAL DESCRIPTIONS <br /> The following chemical descriptions are presented for chemicals that may be present at <br /> ' the Site. Each chemical description includes physical and odor recognition <br /> characteristics, the health effects associated with exposure, and exposure limits <br /> expressed as an 8-hour time-weighted average (TWA). Provided are Federal OSHA <br /> (OSHA) permissible exposure limits (PELs; located in 29 CFR 1910.1000); California <br /> OSHA (Cal/OSHA) PELs (located in 8 CCR 5155); and the American Conference of <br /> Governmental Industrial Hygienists (ACGIH) threshold limit values (TLVs). <br /> ' Benzene <br /> ' Benzene is a clear, volatile, colorless, highly flammable, and toxic liquid with a <br /> characteristic odor. It is a severe eye and moderate skin irritant. Human effects by <br /> ' inhalation and ingestion include: euphoria, changes in sleep and motor activity, nausea <br /> and vomiting, other blood effects, dermatitis, and fever. In industry, inhalation is the <br /> primary route of chronic benzene poisoning. If the liquid is aspirated into the lung it <br /> ' may cause pulmonary edema. Poisoning by skin contact has also been reported. <br /> Exposure to high concentrations (3,000 ppm) may result in acute poisoning, which is <br /> characterized by the narcotic action of benzene on the central nervous system. Chronic <br /> ' poisoning occurs most commonly through inhalation and dermal absorption. Benzene is <br /> a known human carcinogen that can cause leukemia. The ionization potential (IP) for <br /> benzene is listed as 9.24 electron volts (eV). <br /> ' The OSHA PEL is listed as 1 ppm. <br /> The Cal/OSHA PEL is listed as 1 ppm. <br /> The TLV is listed as 0.5 ppm. <br /> Note: Published exposure limits designate a skin notation that indicates dermal contact <br /> can contribute to the overall exposure. <br /> 1,2-Dichloroethene (1,2-DCE) <br /> ' 1,2-DCE, a mixture of the cis and trans isomers, is a liquid with a slightly acrid odor. <br /> Available data conflict on whether there is significant difference in the toxicity from <br /> ' short-term exposure to trans-1,2-DCE versus cis-1,2-DCE. Narcosis has been <br /> identified as the important effect of inhalation. The IP for 1,2-DCE is listed as 9.65 <br /> eV. <br /> ' RIFSWP-AppF-ARFI-RCVI-041II:SRL Page F1-1 <br />