EPA Indoor Air Quality Glossary of Terms, Oct 1997

NYC 9/11 Public Portal Document Indoor Air (Quality (IAQ) - Glossary of Terms Page 1 of 8

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An Introduction to Glossary of Terms Indoor Air Quality Terms not defined herein shouid have their ordinary meaning within the context of Frequently Asked their use. Ordinary meaning is as defined in "Webster's Ninth New Coliegiate Questions Dictionary." Glossary of Terms ACID AEROSOL: Acidic liquid or solid particles that are small enough to become airborne. High concentrations of acid aerosols can be irritating to the lungs and have lAQ Publications been associated with some respiratory diseases, such as asthma. lAQ Hotlines Recursos en ACTION LEVEL: A term used to identify the level of indoor radon at which remedial Espahol action is recommended. (EPA's current action level is 4 pCi/L.) lAQ Links ACTION PACKET: In reference to the lAQ Tools for Schools Kit - contains three Public Service components - an introductory memo, iAQ Backgrounder, and lAQ Checklist - to assist Announcements school personnel to implement an effective yet simple IAQ program in their school. Asthma and Indoors AHU: See "Air Handling. Unit." Radon AIR CLEANING: An IAQ control strategy to remove various airborne particulates Secondhand and/or gases from the air. The three types of air cleaning most commonly used are SmokeZ Smoke-free particulate filtration, electrostatic precipitation, and gas sorption. Homes Mold Resources EXCHANGE RATE: The rate at which outside air replaces indoor air in a space. Expressed in one of two ways: the number of changes of outside air per unit of time air I-BEAM Program changes per hour (ACH); or the rate at which a volume of outside air enters per unit of lAQ in Homes time - cubic feet per minute (cfm).

lAQ in Schools AIR HANDLING UNIT (AHU): For purposes of this document refers to equipment that lAQ in Large includes a blower or fan, heating and/or cooling coils, and related equipment such as Buildings controls, condensate drain pans, and air filters. Does not include ductwork, registers About Homeland or grilles, or boilers and chillers. Security AIR PASSAGES: Openings through or within walls, through floors and ceilings, and Cleveland Air Toxics around chimney flues and plumbing chases, that permit air to move out of the Pilot Project conditioned spaces of the building. An Introduction to ANIMAL DANDER: Tiny scales of animal skin. Indoor Air Quality ALLERGEN: A substance capable of causing an allergic reaction because of an Frequently Asked individual’s sensitivity to that substance. Questions ALLERGIC RHINITIS: Inflammation of the mucous membranes In the nose that is Glossary of caused by an allergic reaction. Terms lAQ Publications ANTIMICROBIAL: Agent that kills microbial growth. See "disinfectant," "sanitizer," and lAQ Hotlines "sterilizer." Recursos en

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