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EXPOSURE ROUTE (PATHWAY): The course a chemical or physical agent takes from a source to an exposed organism. EXPOSURE SCENARIO: A characterization of the behavior, lifestyle, and activities of the potentially exposed population to be evaluated. HAZARD IDENTIFICATION: A qualitative assessment containing a review of biological and chemical information used to determine whether exposure to a chemical or agent may pose a hazard or increase in the incidence of an adverse health condition or effect (e g, cancer) HAZARD: The inherent ability of a chemical or agent to cause harm INDICATOR CHEMICAL: Chemicals that are site-related and whose data are of sufficient quality for use in the quantitative risk assessment INGESTION EXPOSURE: Contact with chemicals from ingestion of food, liquid, or particulates INHALATION EXPOSURE: Contact with chemical vapors or particulate matter which is inhaled via the nose or mouth into the respiratory system INTAKE: The quantity of the chemical that enters the body through all routes of exposure LIFETIME AVERAGE DAILY DOSE (LADD): The dose of a chemical ingested or absorbed on a daily basis and averaged over a seventy year lifetime LOAEL: Lowest observable adverse health effect level - The amount of chemical that, when absorbed by the body, is known to create adverse health effects MEAN: The numerical value obtained by dividing the sum of a set of observations by the number of individual observations MEDIAN: That value above which and below which half of the population in the set lies, ex 1,2,5,617 -- 5 is the median value NOAEL: No observable adverse effect level - The smallest amount of chemical that, when absorbed by the body, is not expected to create adverse health effects NONCARCINOGEN: A chemical or substance which is not considered to cause cancer PARTITION COEFFICIENT: The ratio of the solubility of a substance in organic solvents to its solubility to water. G 00071MANPAFE FNL1kmo 26 93 CbcmRuk* 1993