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Note: EPA no longer updates this information, but it may be useful as a reference or resource.

Please see www.epa.gov/nsr/ for the latest information on EPA's New Source Review program.

July 28, 1987 Letter Concerning Best Available Control Technology (BACT) Determinations 8.20

    1) The role of NSPS in BACT determinations - describes the reasons why BACT determinations almost always should be more stringent than NSPS for any given source.

    2) The relationship between BACT and air quality impacts - BACT is a specific requirement for a PSD permit regardless of air quality impact or amount of increment consumed, provided all else was acceptable.

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