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OCR for page 60
Nineteenth Interim Report of the Committee on Acute Exposure Guideline Levels: Part A Abbreviations ACGIH American Conference of Governmental Industrial Hygienists AEGL acute exposure guideline level AN acrylonitrile ATSDR Agency for Toxic Substances and Disease Registry BCME bis-chloromethyl ether BEI Biological Exposure Index BMCL05 benchmark concentration with its lower confidence limit at a 5% extra risk BZ 3-quinuclidinyl benzilate CEEL community emergency exposure level CEO cyanoethylene oxide CMME chloromethyl methyl ether DA diphenylchloroarsine ED ethyldichloroarsine ED50 the dose of a substance that causes an effect in 50% of the exposed population EHS extremely hazardous substances EPA U.S. Environmental Protection Agency ERPG emergency response planning guidelines H2SO4 sulfuric acid HBr hydrogen bromide HCl hydrogen chloride HFA hexafluoroacetone ICt50 concentration and time of a substance that causes incapacitation to 50% of an exposed population IDLH immediately dangerous to life or health IRIS Integrated Risk Information System L liter L-1 lewisite-1 L-2 lewisite-2 L-3 lewisite-3 LC01 lethal concentration to 1% of the exposed population LC50 concentration of a substance that is lethal to 50% of the exposed population LCt50 concentration and time of a substance that is lethal to 50% of the exposed population LOAEL lowest-observed-adverse-effect level m3 cubic meter MAC maximum accepted concentration MAK maximum workplace concentration MD methyldichloroarsine Mg milligram min minute mmHg millimeters of mercury
OCR for page 61
Nineteenth Interim Report of the Committee on Acute Exposure Guideline Levels: Part A NAC National Advisory Committee on Acute Exposure Guideline Levels for Hazardous Substances NIOSH National Institute for Occupational Safety and Health NO nitric oxide NO2 nitrogen dioxide N2O4 nitrogen tetroxide NOAEL no-observed-adverse-effect level NOEL no-observed-effect level NRC National Research Council OSHA Occupational Health and Safety Administration PBPK physiologically based pharmacokinetic PD phenyldichloroarsine POD point of departure ppm part per million RD50 concentration of a substance that reduces the respiratory rate of test organisms by 50% REL recommended exposure limit (NIOSH) SMAC spacecraft maximum allowable concentration SO3 sulfur trioxide SOP standing operating procedures STEL short-term exposure limit TMB trimethylbenzene TLV Threshold Limit Value TRI Toxics Release Inventory TSD technical support document UF uncertainty factor WEEL workplace environmental exposure limit