Prevention of Significant Deterioration (PSD) Permit Information
Prevention of Significant Deterioration (PSD) permits are for projects that may significantly increase air pollution. Ecology prepares PSD permits for industrial sources of air pollution, except for projects involving Washington's Energy Facility Site Evaluation Council (EFSEC).
This web page includes information about PSD permits that are being or have been drafted by Ecology, comment and appeal procedures, and information for PSD permit applicants.
The permitting process is as follows:
Certain electric power generation projects are under the authority of Washington's Energy Facility Site Evaluation Council (EFSEC). Contact EFSEC for more information.
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