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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.

January 1, 1978 Resumption of Operation of a Portland General Electric Plant 23.9

A source which resumes operation after being shutdown for a period of time may or may not be subject to IR. If a source is explicitly excluded from the State Implementation Plan Control Strategy and the attainment of the NAAQS is predicated upon its closure, such source would be considered a new source upon re-startup and therefore subject to IR.

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