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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.

August 5, 1987 Implementation of Revised Prevention of Significant Deterioration (PSD) Program for Particulate Matter 5.27

The purpose of this memo is to highlight the potential differences as to when the new PM10 indicator must be subject to PSD review under EPA's Part 52 PSD regulations versus the PSD rules in approved SIP's, and to encourage Regions to communicate with affected State and local agencies to ensure that all parties understand their PSD role concerning the new PM10 requirements.
Notebook Entries: 15.12

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