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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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