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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.

May 4, 1979 Need for Emission Offsets in Rural O3 Nonattainment Areas 12.3

The intent of this memorandum is to reiterate EPA policy concerning the need for emission offsets in rural areas for ozone.

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