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Air Emissions Inventories

The Clean Air Act (CAA) requires states and local governments to prepare air emissions inventories for all nonattainment areas. The inventories were prepared for the 1990 base year and submitted to EPA as State Implementation Plan (SIP) submittals. Periodic inventories are then prepared at each three year interval following (i.e., 1993, 1996, 1999, etc.). The air emission sources to be inventoried are stationary point sources (large facilities), stationary area sources (groupings of a large number of small sources), on-road mobile sources (cars, trucks), off-road mobile sources (small engines, aircraft, etc.), and biogenic sources (plant life). The pollutants inventoried for Ozone nonattainment areas are VOC, NOx and CO. The pollutant inventoried for CO nonattainment areas CO. The pollutant inventoried for PM10 nonattainment areas is PM10. These inventories are the basis for plan projections and can measure progress towards attainment of the National Ambient Air Quality Standards (NAAQS).

State and local governments are also required to prepare and submit an annual state-wide inventory of criteria pollutants (NOx, VOC, SO2, CO, PM10, Lead) for large point sources.

Emission Inventory Training: www.epa.gov/ttn/chief/eidocs/training.html

Responsible staff member is: Carl Young (214) 665-6645 or Email: young.carl@epa.gov

Section Chief - Guy Donaldson (214) 665-7242;
E-Mail: Donaldson.guy@epa.gov

EPA Headquarters Home pages

1. U.S. Environmental Protection Agency (EPA)
2. EPA Office of Air and Radiation (OAR)
3. EPA Office of Air Quality Planing and Standards (OAQPS)
4. EPA Office of Transportation and Air Quality
5. Technical Transfer Network

State Web Sites Exit EPA

1. Texas Commission on Environmental Quality (TCEQ): http://www.tceq.state.tx.us/

2. Louisiana Department of Environmental Quality (LDEQ): http://www.deq.state.la.us

3. Oklahoma Department of Environmental Quality (ODEQ): http://www.deq.state.ok.us

4. New Mexico Environment Department (NMED): http://www.nmenv.state.nm.us

5. Arkansas Department of Environmenatal Quality (ADEQ): http://www.adeq.state.ar.us

6. City of Albuquerque, New Mexico: http://www.cabq.gov

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