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Related Information


Scorecard is a website provided by the Environmental Defense Fund. By entering your zipcode into an entry field you can access air pollution estimates for your community.

United States Environmental Protection Agency

1996 National Air Toxics Assessment

The National-Scale Air Toxics Assessment

As part of EPA's National Air Toxics Assessment activities, EPA conducted a national-scale assessment of 33 air pollutants (a subset of 32 air toxics on the Clean Air Act's list of 188 air toxics plus diesel particulate matter (diesel PM)). The assessment includes four steps that look at the year 1996. Note: As of May 2002, the results posted for all four steps include revisions based on input from scientific peer review.

  1. Compiling a national emissions inventory of air toxics emissions from outdoor sources. Available here
  2. Estimating ambient concentrations of air toxics across the contiguous United States. Available here
  3. Estimating population exposures across the contiguous United States. Available here
  4. Characterizing potential public health risk due to inhalation of air toxics including both cancer and noncancer effects. Available here

The goal of the national-scale assessment is to identify those air toxics which are of greatest potential concern, in terms of contribution to population risk. The results will be used to set priorities for the collection of additional air toxics data (e.g., emissions data and ambient monitoring data).

Technology Transfer Network

Air Toxics Website

The Technology Transfer Network Air Toxics Website: There are many different Federal, State, Tribal and Local Agencies performing work in the air toxics arena. The work one State may be doing could directly benefit another State with similar air toxics scenarios. Within the USEPA there are many different program offices working on different pieces of the the air toxics puzzle. We call this site a "network" because this website is a central clearinghouse and repository for air toxics information from all of these entities--and by sharing information and data, reduce duplication of effort wherever possible.

(NACAA) National Association of Clean Air Agencies

State and local air pollution control officials formed NACAA (formally known as STAPPA and ALAPCO) over 30 years ago to improve their effectiveness as managers of air quality programs. The associations serve to encourage the exchange of information among air pollution control officials, to enhance communication and cooperation among federal, state and local regulatory agencies, and to promote good management of our air resources.

Northeast States for Coordinated Air Use Management

Northeast States for Coordinated Air Use Management: An interstate association of air quality control divisions in the Northeast states. NESCAUM's purpose is to exchange technical information, and to promote cooperation and coordination of technical and policy issues regarding air quality control among the member states.

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Last Updated: 1/18/13


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