(a) The State of Alaska Department of Environmental Conservation Air Quality Control Regulations as in effect on June 2, 1988 (specifically 18 AAC 50.020, 50.021, 50.300, 50.400, 50.510, 50.520, 50.530, 50.600, 50.620, and 50.900) and the State air quality control plan as in effect on June 2, 1988 (specifically, Section I.B. AIR QUALITY CONTROL REGIONS, Section I.C. ATTAINMENT/NONATTAINMENT DESIGNATIONS, Section I.D. PREVENTION OF SIGNIFICANT DETERIORATION DESIGNATIONS, Section IV.F. FACILITY REVIEW PROCEDURES, Section IV.G APPLICATION REVIEW AND PERMIT DEVELOPMENT, Section IV.H PERMIT ISSUANCE REQUIREMENTS, Appendix IV.1. PSD area Classification and Reclassification, and Appendix V ADEC Ambient Analysis Procedures), are approved as meeting the requirements of part C for preventing significant deterioration of air quality.

(b) The requirements of sections 160 through 165 of the Clean Air Act are not met for Indian reservations since the plan does not include approvable procedures for preventing the significant deterioration of air quality on Indian reservations and, therefore, the provisions of § 52.21 except paragraph (a)(1) are hereby incorporated and made part of the applicable reservation in the State of Alaska.