EPA Approves New Hampshire’s Infrastructure Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standards
On 8 July, 2016 the U.S. EPA approved elements of New Hampshire’s State Implementation Plan (SIP) submissions regarding infrastructure requirements of the Clean Air Act (CAA) for the 2010 sulfur dioxide National Ambient Air Quality Standards (NAAQS).
In its approval, EPA also updated the classification for two of New Hampshire’s air quality control regions for sulfur dioxide based on recent air quality monitoring data collected by the state. EPA is also conditionally approving elements of New Hampshire’s submittal relating to prevention of significant deterioration (PSD) requirements.
In making this approval, EPA is certifying that New Hampshire’s current SIP is sufficient to the meet the required infrastructure elements under section 110(a)(1) and (2) for the 2010 SO2 NAAQs, with the exception of certain aspects relating to the state’s PSD program which EPA has conditionally approved.
EPA, in this decision, has also updated the classification of two air quality control regions in New Hampshire at 40 CFR 52.1521. The classification of the Androscoggin Valley Interstate control region is being revised from Priority IA to Priority III and the Merrimack Valley-Southern New Hampshire Interstate control region is being revised from Priority I to Priority III based on recent air quality monitoring data collected by the state.
Approval of New Hampshire’s PSD program with respect to the 2010 SO2 NAAQS is conditioned on New Hampshire submitting an explanation of the deficiency’s found in its initial PSD program submittal.
The final rule will be effective on 8 August, 2016.
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