(a) The following portions of the Oklahoma Regional Haze (RH) State Implementation Plan submitted on February 19, 2010 are disapproved:

(1) The SO2 BART determinations for Units 4 and 5 of the Oklahoma Gas and Electric (OG&E) Muskogee plant; Units 1 and 2 of the OG&E Sooner plant; and Units 3 and 4 of the American Electric Power/Public Service Company of Oklahoma (AEP/PSO) Northeastern plant;

(2) The long-term strategy for regional haze;

(3) “Greater RP Alternative Determination” (Section VI.E);

(4) Separate executed agreements between ODEQ and OG&E, and ODEQ and AEP/PSO entitled “OG&E RH Agreement, Case No. 10-024, and “PSO RH Agreement, Case No. 10-025,” housed within Appendix 6-5 of the RH SIP; and

(5) The reasonable progress goals for the first planning period and the reasonable progress consultation with Texas for the Wichita Mountains Class I area.

(b) The portion of the State Implementation Plan pertaining to adequate provisions to prohibit emissions from interfering with measures required in another state to protect visibility, submitted on May 10, 2007 and supplemented on December 10, 2007 is disapproved.

(c) The SO2 BART requirements for Units 4 and 5 of the Oklahoma Gas and Electric (OG&E) Muskogee plant, and Units 1 and 2 of the OG&E Sooner plant; the deficiencies in the long-term strategy for regional haze; and the requirement for a plan to contain adequate provisions to prohibit emissions from interfering with measures required in another state to protect visibility are satisfied by §52.1923.

(d) The revision to the Regional Haze plan submitted on June 20, 2013 concerning Units 3 and 4 of the American Electric Power/Public Service Company of Oklahoma (AEP/PSO) Northeastern plant is approved. For this source the plan addresses requirements for BART and adequate provisions to prohibit emissions from interfering with measures required in another state to protect visibility. As called for in the plan if a SO2 emission limit of 0.3 lb/MMBtu is not met the State will obtain and/or identify additional SO2 reductions within Oklahoma to the extent necessary to achieve the anticipated visibility benefits estimated by the Central Regional Air Planning Association (CENRAP).

[76 FR 81759, Dec. 28, 2011, as amended at 79 FR 12954, Mar. 7, 2014; 81 FR 349, Jan. 5, 2016]