40 CFR § 52.124 - Part D disapproval.

(a) The following portions of the Arizona SIP are disapproved because they do not meet the requirements of Part D of the Clean Air Act.

(1) The attainment demonstration, conformity and contingency portions of the 1987 Maricopa Association of Governments Carbon Monoxide Plan and 1988 Addendum.

(2) [Reserved]

(b) [Reserved]

(c) The following portions of the “Arizona State Implementation Plan Revision: Hayden Sulfur Dioxide Nonattainment Area for the 2010 SO2 NAAQS” are disapproved because they do not meet the requirements of Part D of the Clean Air Act:

(1) Attainment demonstration,

(2) Reasonably available control measures/reasonably available control technology,

(3) Enforceable emission limitations,

(4) Reasonable further progress, and

(5) Contingency measures.

[56 FR 5478, Feb. 11, 1991, as amended at 62 FR 41864, Aug. 4, 1997; 63 FR 41350, Aug. 3, 1998; 65 FR 36358, June 8, 2000; 67 FR 48739, July 25, 2002; 84 FR 39201, Aug. 9, 2019; 85 FR 71553, Nov. 10, 2020; 86 FR 976, Jan. 7, 2021; 86 FR 46989, Aug. 23, 2021; 87 FR 80468, Dec. 30, 2022; 88 FR 7881, Feb. 7, 2023; 90 FR 1907, Jan. 10, 2025; 90 FR 4655, Jan. 16, 2025]