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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.

October 28, 1988 Review of De Minimis Emissions - Sanctions 4.39 4.42

De minimis net emission increases that accumulate within a contemporaneous (5 year) time frame should not be combined and would not trigger PSD review when significance levels are reached. However, de minimis increases do consume PSD increment, and, in nonattainment areas, aggregated de minimis emissions will trigger sanctions when significance levels are reached.
Notebook Entries: 5.24; 27.5

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