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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.

February 13, 1981 Baseline Date in Determining Net Emissions Increases 4.15

Increases or decreases in SO2 can only be creditable if the increase or decrease is required to be considered in computing the amount of available increment. Changes in PM10 or SO2 emissions commencing prior to January 6, 1975 cannot be considered creditable. The only limitation on creditable decreases or increases for criteria pollutants other than PM10 and SO2 is the 5 year period before construction of the modification commences.

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