Hazard Index definition

Hazard Index means the sum of two or more hazard quotients for multiple hazardous substances and/or multiple exposure pathways.

Hazard Index means the sum of the Hazard Quotients.

Hazard Index means the calculation of the potential for non-cancer health effects as a result of exposure to one or more substances with the same or similar modes of toxic action or toxic endpoints.

Examples of Hazard Index in a sentence

• Special standards for ozone, CO, and visibility apply in the Lake Tahoe Air Basin portion of the County; or • Emissions of toxic air contaminants cause cancer risk greater than 1 in 1 million (10 in 1 million if best available control technology for toxics is used) or a non-cancer Hazard Index greater than 1.

• The BANCS method was developed by Rosgen (2001) and utilizes two commonly used bank erodibility estimation tools to predict stream bank erosion; the Bank Erosion Hazard Index (BEHI) and Near Bank Stress (NBS) methods.

• The 1-hour average HCl-equivalent emission rate limit is the HCl-equivalent emission rate that ensures that the Hazard Index associated with maximum 1-hour aver- age exposures is not greater than 1.0 rounded to the nearest tenths decimal place (0.1).

• Further refinement of the cumulative risk assessment is needed if the sum of the predicted exposure as % of the AOELs exceeds 100 % (i.e. exceeds 1 of the Hazard Index).

• By adding the HQs for all contaminants within a medium or across all media to which a given population may reasonably be exposed, the Hazard Index (HI) can be generated.

More Definitions of Hazard Index

Hazard Index means the sum of individual acute or chronic hazard quotients for each substance affecting a particular toxicological endpoint, as determined in accordance with the requirements of "The Air Toxics Hot Spots Program Guidance Manual for Preparation of Health Risk Assessments," Office of Environmental Health Hazard Assessment, August 2003, which is incorporated herein by reference.

Hazard Index means the sum of more than one hazard quotient for multiple substances, multiple exposure pathways, or both. The Hazard Index is calculated separately for chronic, subchronic, and shorter duration exposures.

Hazard Index means the sum of the hazard quotients for multiple substances and/or multiple exposure pathways.

Hazard Index or “HI” means the sum of more than one hazard quotient for multiple substances and/or multiple exposure pathways. The HI is calculated separately for chronic, subchronic, and shorter-duration exposures.

Hazard Index means the sum of hazard quotients for any substance over all exposure pathways;

Hazard Index means the sum of two or more hazard quotients for chemicals of concern or multiple exposure pathways to a particular receptor.

Hazard Index means the sum of hazard quotients for multiple substances and/or multiple exposure pathways, or the sum of hazard quotients for chemicals acting by a similar mechanism and/or having the same target organ.