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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.

April 8, 1981 Time that the National Park Service (NPS) has to Review Prevention of Significant Deterioration (PSD) Permit Applications for Facilities Which May Impact Class I areas 9.5

EPA presents guidelines for transmittal of PSD permit applications in response to National Park Service (NPS) concerns about limited time afforded for review of applications that might significantly affect a Class I area.

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