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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.

June 13, 1989 Transmittal of Background Statement on "Top-Dawn" Best Available Control Technology (BACT) 8.51

This memorandum discusses the origins of and rationale for top-down BACT, explains why the EPA has adopted the current policy on BACT, and clarifies EPA's view that this policy is consistent with current statutory and regulatory requirements.

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