                     Air Plan Approval; Douglas, Arizona 
                Second 10-Year Maintenance Plan, 1971 SO2 NAAQS
                                 Proposed Rule
                      (Docket No. EPA-R09-OAR-2017-0537)
                                       
Docket Index Table of Contents

A. U.S. EPA Guidance Documents, Policies, and Rulemakings
B. State Plans, Rules, Support Documents, Reports, and Correspondence
C. Additional Documents for Proposed Rulemaking
D. Notices of Proposed Rulemaking and Technical Support Document
E. Public Comments and Related Documents
F. Additional Documents Considered for Final Plan Action
G. Notices of Final Rulemaking, Plan Action

A. U.S. EPA Guidance Documents, Policies, and Rulemakings

 43 FR 8962, Title 40  -  Protection of the Environment, Chapter I  -  Environmental Protection Agency, Subpart C  -  Air Programs, Part 81  -  Air Quality Control Regions, Criteria, and Control Techniques, Final rule (March 3, 1978).
     
 44 FR 21261, Air Quality Control Regions, Criteria, and Control Techniques; Attainment Status Designations, Final rule (April 10, 1979).

 Memorandum dated September 4, 1992, from John Calcagni, Director, Air Quality Management Division, Office of Air Quality Planning and Standards, U.S. EPA, to Air Division Directors, Regions I-X, entitled "Procedures for Processing Requests to Redesignate Areas to Attainment."

 Memorandum dated January 26, 1995, from Sally Shaver, Director, Air Quality Strategies and Standards Division, Office of Air Quality Planning and Standards, U.S. EPA, to Air Division Directors, Regions I-X, entitled "Attainment Demonstration Policy for Sulfur Dioxide Nonattainment Areas."

 64 FR 19916, Approval and Promulgation of Implementation Plans for Arizona and California; General Conformity Rules, Final rule (April 23, 1999).

 Memorandum dated October 18, 2000, from John S. Seitz, Director, Office of Air Quality Planning and Standards, U.S. EPA, to Air Division Directors, Regions I-X, entitled "Redesignation of Sulfur Dioxide Nonattainment Areas in the Absence of Monitored Data."

 71 FR 9941, Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Arizona, Final rule (February 28, 2006).

 75 FR 35520, Primary National Ambient Air Quality Standard for Sulfur Dioxide, Final rule (June 22, 2010).

 Memorandum dated April 11, 2011, from Tyler Fox, Leader, Air Quality Modeling Group, Office of Air Quality Planning and Standards, U.S. EPA, to EPA Regional Modeling Contacts, Regions I-X, entitled "AERSCREEN Released as the EPA Recommended Screening Model."

 80 FR 67319, Revisions to Air Plan; Arizona; Stationary Sources; New Source Review, Final rule (November 2, 2015).

 83 FR 1098, Air Quality Designations for the 2010 Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standard  -  Round 3, Final rule (January 9, 2018).

B. State Plans, Rules, Support Documents, Reports, and Correspondence

 Douglas Sulfur Dioxide Nonattainment Area State Implementation and Maintenance Plan, Air Quality Division, Arizona Department of Environmental Quality, November 2001.

 Douglas Sulfur Dioxide Nonattainment Area State Implementation Plan, Emissions Inventory and Air Quality Dispersion Modeling Update, September 2005.

 Maintenance Plan Renewal, 1971 Sulfur Dioxide National Ambient Air Quality Standards, Douglas Maintenance Area, Air Quality Division, Arizona Department of Environmental Quality, December 2016.

C. Additional Documents for Proposed Rulemaking

 "Technical Support Document, Modeling Evaluation for the Douglas 2[nd] SO2 Maintenance Plan," January 8, 2018.

 Text file describing supplementary AERSCREEN modeling performed by EPA, "modeing_readme.txt".

 Text file listing EPA AERSCREEN modeling files provided in "Douglas_modeling_files.zip", "Douglas_modeling_files.zip.txt".

 Zipped folder containing EPA AERSCREEN modeling files, "Douglas_modeling_files.zip".



D. Notices of Proposed Rulemaking 

 83 FR 6996, Approval of Arizona Air Plan Revision; Douglas, Arizona; Second 10-Year Sulfur Dioxide Maintenance Plan; proposed rule (February 16, 2018).

E. Public Comments and Related Documents

[Reserved]

F. Additional Documents Considered for Final Plan Action

[Reserved]

G. Notice of Final Rulemaking

[Reserved]

