Approval and Promulgation of Implementation Plans; Arkansas; Regulation 19 and 26

The EPA is approving the recodification of and revisions to the Arkansas State Implementation Plan (SIP or plan). The Arkansas Department of Environmental Quality (ADEQ) adopted revisions to Regulation 19 on January 22, 1999. The Governor of Arkansas submitted these revisions to EPA on March 5, 1999. The EPA also incorporates into the Arkansas SIP portions of Arkansas' regulation for its Operating Permits Program (Regulation 26) which relate to the construction and modification of major sources. This is necessary because the submitted SIP revision incorporates these provisions to ensure that major sources which must receive an operating permit meet the Federal requirements relating to the construction and modification of major sources as defined under title I of the Clean Air Act (Act). Furthermore, EPA approves revisions to Arkansas' program for the prevention of significant deterioration (PSD) of air quality to replace the increments for total suspended particulates (TSP) with increments for particulate matter less than 10 micrometers (PM-10). In conjunction with this action, EPA also removes the TSP area designation tables in title 40 of the CFR part 81 for Arkansas. The EPA is taking no action on Chapter 8 of Regulation 19 which pertains to designated facilities. The EPA will act on Chapter 8 in a separate action. This action also recodifies, with minor revisions, several provisions of its current SIP into Chapters 1, 2, 3, 5, 6, 7, and 10. The EPA approves these revisions based upon a finding that the regulations meet the requirements of the Act pertaining to the approval of SIPs and the Federal regulations which describe the requirements that a SIP must meet.