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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. it is predicted that the general population, including susceptible individuals, could experience life-threatening health effects or death.”3 AEGL. See acute exposure guideline levels. Aerosol. “A suspension of liquid or solid particles in a gas.”4 Alveolar macrophage. “One of the rounded, granular, mononuclear phagocytes within the alveoli of the lungs that ingest inhaled particulate matter.”5 ATSDR (Agency for Toxic Substances and Disease Registry). The ATSDR is an agency of the Department of Health and Human Services that was created by Congress under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), commonly known as the Superfund Act. Its mission is to serve the public by using the best science, taking responsive public health actions, and providing trusted health information to prevent harmful exposures and disease related to toxic substances. ATSDR defines minimal risk levels (MRLs) for hazardous substances.6 CAMS. See central atmosphere monitoring system. CEGL. See continuous exposure guidance level. Ceiling concentration. A concentration that shall not be exceeded during any part of a working day.7 Central atmosphere monitoring system (CAMS). CAMS monitors the submarine atmosphere by using an infrared spectrometer to measure carbon monoxide and a fixed-collector mass spectrometer to measure oxygen, nitrogen, carbon dioxide, hydrogen, water vapor, and fluorocarbons 11, 12, and 114.8 Chronic exposure. A repeated exposure lasting more than approximately 10%
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