Mississippi: Revisions to Prevention of Significant Deterioration of Air Quality Regulations

EPA is approving revisions to the State Implementation Plan (SIP) to include modifications of the state prevention of significant deterioration (PSD) of air quality regulation to update the adoption by reference in Regulation APC-S-5, of the amendments and revisions to the Federal regulations promulgated in 40 CFR 52.21 and 51.166 as of the date of adoption of this revision. This plan revision provides for inclusion of particulate matter increment requirements measured as PM<INF>10 (particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers) and incorporation of revisions to the Guideline on Air Quality Models (including Supplement B) as promulgated by EPA in 40 CFR 51.166(l) and 40 CFR part 51, appendix W. This plan revision further provides for inclusion of amendments and revisions to definitions and any other sections of 40 CFR 52.21 and 51.166 as promulgated by EPA. The revision and associated regulation amendments were adopted on December 9, 1993, by the Mississippi Commission on Environmental Quality and became state effective on January 9, 1994.