(a) Regulation for preventing significant deterioration of air quality. The Oklahoma plan, as submitted, does not apply to certain sources in the State. Therefore the provisions of § 52.21 except paragraph (a)(1) are hereby incorporated, and made part of the Oklahoma State implementation plan, and are applicable to the following major stationary sources or major modifications:

(i) Sources permitted by EPA prior to approval of the Oklahoma PSD program for which EPA retains enforcement authority.

(ii) Sources proposing to locate on lands over which Oklahoma does not have jurisdiction under the Clean Air Act to issue PSD permits.

(b) The plan revisions submitted by the Governor of Oklahoma on August 22, 1989, as adopted on March 23, 1989, by the Oklahoma State Board of Health and effective June 11, 1989, amendments to OAPCR 1.4.4 “Major Sources—Prevention of Significant Deterioration (PSD) Requirements for Attainment Areas” is approved as meeting the requirements of Part C of the Clean Air Act for preventing significant deterioration of air quality.