                                       





                                       
                 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                            REGION IX AIR DIVISION




                          Technical Support Document 
                                      for
                              EPA's Rulemaking
                                    for the
                       Arizona State Implementation Plan
                                       
Article 2. Ambient Air Quality Standards; Area Designations; Classifications, 
Section R18-2-210. Attainment, Nonattainment, and Unclassifiable Area Designations




                              
                          Prepared by: Vanessa Graham
                          Reviewed by: Andrew Steckel

                                  March 2016





RULE IDENTIFICATION - 
Agency
Arizona Department of Environmental Quality

SIP Approved Rule
Arizona Administrative Code (AAC) Article 2, Section R18-2-210. Attainment, Nonattainment, and Unclassifiable Area Designations.
Submitted  -  October 29, 2012.
Approved -  79 FR 56656, September 23, 2014.

Subject of this TSD
AAC R18-2-210. Attainment, Nonattainment, and Unclassifiable Area Designations.
Amended  -  July 1, 2014.
Submitted  -  December 21, 2015.

Completeness Finding
Determination of completeness letter: March 21, 2016.

                                       
RULE SUMMARY  -  AAC section R18-2-210 updates Arizona's incorporation by reference status for national ambient air quality standard (NAAQS) pollutants as defined in the July 2014 update to 40 CFR 81.303. 40 CFR 81.303 addresses the nonattainment status and containment boundaries for NAAQS pollutants in Arizona.

EPA EVALUATION CRITERIA - Generally, SIP rules must be enforceable (see section 110(a) of the Clean Air Act (CAA)) and must not relax existing requirements.  CAA §110(l) prohibits EPA from approving any SIP revision that would interfere with any applicable requirement concerning attainment and reasonable further progress (RFP) or any other applicable requirement of the CAA. In addition, CAA §193 prohibits the modification of any SIP-approved control requirement in effect before November 15, 1990, in a nonattainment area.

EPA ACTION - AAC R18-2-210 is clear and adequately complies with CAA sections 110(a), 110(l), 193, and other provisions of the Act. Approval of these revision replaces previously-approved but now outdated provisions in the Arizona SIP. EPA staff recommends approval of R18-2-210.


REFERENCES - 

 79 FR 56656, September 23, 2014.
