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March 10, 1980 Emission Offset Requirements in Secondary Standard Total Suspended Particulate Plans 25.4
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25.4
MEMORANDUM: SUBJECT: Emission Offset Requirements in Secondary Standard Total Suspended Particulate Plans FROM: David G. Hawkins, Assistant Administrator for Air, Noise, and Radiation TO: Regional Administrator, Regions I-X
The purpose of this memorandum is to reiterate Agency policy regarding emission offset requirements in State Implementation Plans (SIPs) for areas in which only the secondary TSP standard is violated. For TSP nonattainment areas violating the secondary standard only and where the Federal offset policy remains in effect, emission offsets are required for all major new sources permitted prior to approval of the SIP for that area. The Federal offset policy remains in effect during any extended time allowed under Section 110(B) for development and approval of a SIP revision for an area that violates the secondary standard only (44 FR 20379; April 4, 1979, and 44 FR 50600; August 29, 1979). If the Federal offset policy expires, however no major new sources may be permitted to commence construction prior to final approval of the SIP for the area impacted by the source. Following approval by EPA of the secondary standard SIP, emission offsets would no longer be required for any new source locating in or impacting a secondary standard nonattainment area dominated by agricultural and related fugitive dust sources if offsets from industrial sources are not reasonably available. In order to assure thorough dissemination of Agency policy and procedures with regard to the requirements of Part D of the Act, I am having this memorandum published in the Federal Register. cc: Director, Air and Hazardous Materials Division Regions I-X |