(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) The following Reasonably Available Control Technology (RACT) determinations are disapproved because they do not meet the requirements of Part D of the Clean Air Act.

(1) [Reserved]

(2) Maricopa County Air Quality Department.

(i) [Reserved]

(ii) The RACT demonstration titled “Analysis of Reasonably Available Control Technology for the 2008 8-Hour Ozone National Ambient Air Quality Standard (NAAQS) State Implementation Plan (RACT SIP),” only those portions of the document beginning with “Gasoline Tank Trucks And Vapor Collection System Leaks” on page 34 through the first full paragraph on page 35, and Appendix C: CTG RACT Spreadsheet, the rows beginning with “Gasoline Tank Trucks And Vapor Collection System Leaks” on page 65, through “Service Stations—Stage I” on pages 67-69. This demonstration represents the RACT requirement for the following source categories: Control of Volatile Organic Compound Leaks from Gasoline Tank Trucks and Vapor Collection Systems (EPA-450/2-78-051) and Design Criteria for Stage I Vapor Control Systems—Gasoline Service Stations (EPA-450/R-75-102).

(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.