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See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Arkansas requires new and modified sources emitting pollutants above the established thresholds to be permitted. A construction permit must be obtained before the modification of an existing source or installation of a new source.
Arkansas is currently in attainment of all the National Ambient Air Quality Standards (NAAQS) for the various criteria pollutants. Therefore, new major sources and major modifications to existing sources are not subject to the requirements of nonattainment New Source Review (NSR) at this time. However, such sources and changes are subject to Prevention of Significant Deterioration (PSD) requirements. The state administers state implementation plan (SIP)-approved nonattainment NSR and PSD programs. The Arkansas PSD regulations include provisions establishing greenhouse gas (GHG) permitting thresholds and are otherwise adopted and incorporated by reference from the current federal PSD requirements, with exceptions. See the national section NEW SOURCE REVIEW for more information on current nonattainment NSR and PSD ...