1 **Index to Docket**  **EPA -**  **R09 -**  **OAR -**  **2014 -**  **026 6**  **Redesignation of the**  **Hayden, Arizona Area**  **to Nona ttainment**  **For the 2008 Lead (Pb) National Ambient Air Quality**  **Standard s**  **CATEGORY I .**  **Proposed Rule** 1. “ Desi gnation of Areas for Air Q u a lity Planning Purposes; State of Arizona; Pinal County and Gila County; Pb ;” signed April 21, 2014 (prepublication version) 2. [ Reserved for published version of the proposed rule. ]
**CATEGORY I**  **I .**  **Official P**  **ublic C**  **omment on the**  **N otice of**  **P roposed**  **R ulemaking**  [Reserved] **CATEGORY I**  **II .**  **O ther**  **D ocuments**  1. Letter from Janice K. Brewer, Governor of Arizona, to Laura Yoshii, Acting Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated December 15, 2009 2. Letter from Benjamin H. Grumbles, Director, Arizona Department of Environmental Quality, to Laura Yoshii, Acting Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated December 17, 2009 3. Arizona Air Quality Designations Technical Support Document – Boundary Recommendation for the 2008 Revision to the National Ambient Air Quality Standard for Lead, December 9, 2009 (“ADEQ 2009 TSD”)
. Enclosure to December 17, 2009 letter from Benjamin H. Grumbles, Director, Ar izona Department of Environmental Quality, to Laura Yoshii, Acting Regional Administrator, U.S. Environmental Protection Agency, Region 9 4. Email exchange between US EPA Region 9 and Arizona Department of Environmental Quality regarding monitor placement, d ated April 1, 2010 5. Letter from Jared Blumenfeld, Regional Administrator, U.S. Environmental Prot ect ion Agency, Region 9, to Jani ce K. Brewer, Governor of Arizona, dated June 14, 2010 6. EPA 2010 draft technical support document entitled “ARIZONA, Area Designations for the 2008 Lead National Ambient Air Quality Standards”2

7. Letter from Janice K. Brewer, Governor of Arizona, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated August 12, 2010 8. “State and Public Comment Summary and Response Document on EPA’s Recommended Area Designations for the 2008 Lead Deisgnation Recommendations – EPA- HQ- OAR - 2009 - 0443” dated November 16, 2010 9. Letter from Henry K. Darwin, Acting Director, Arizona Department of Environmental Qu ality, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, Region 9 , dated December 15, 2010 10. Memorandum signed by Scott Mathias, Interim Director, Air Quality Policy Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, entitled “2008 Lead (Pb) National Ambient Air Quality Standards (NAAQS) Implementation Questions and Answers” dated July 8, 2011 11. Letter from Henry K. Darwin, Acting Director, Arizona Department of Environmental Qualit y, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated August 15, 2011 12. Attachment 1 to l etter from Henry K. Darwin, Acting Director, Arizona Department of Environmental Quality, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, R egion 9, dated August 15, 2011 13. Quality Assurance Program Plan for the Lead (Pb) Ambient Air Monitoring Network, Attachment A. Arizona Department of Environmental Quality, October 24, 2011 (divided into six parts) 13 - a: Part 1 13 - b: Part 2 13 - c: Part 3 13 - d: Part 4 13 - e: Part 5 13 - f: Part 6 14. Letter from Lisa P. Jackson, Administrator, U.S. Environmental Protection Agency, to Janice K. Brewer, Governor of Arizona, dated November 8, 2011 15. Qua lity Assurance Program Plan for the Arizona Department of Environmental Quality Lead (Pb) Ambient Air Monitoring Network, December 26, 2012, with transmittal letter dated January 22, 2013 (divided into three parts) 15 - a: Part 1 15 - b: Part 23 15 - c: Part 3 16. Memorandum to file from Colleen McKaughan, Associate Director, Air Division, U.S. Environmental Protection Agency, Region 9 dated June 11, 2013. Subject: Communication with San Carlos Apache Tribe Regarding Designation of Hayden, Arizona to Nonattainment for the Lead NAAQS 17. Letter from Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection A gency, Region 9, to Janice K. Brewer, Governor of Arizona, dated June 12, 2013 18. Email from Colleen McKaughan, Associate director, U.S. Environmental Protection Agency, Region 9, to Loretta Stone, Director, San Carlos EPA, San Carlos Apache Tribe, dated June 13, 2013 19. U.S. Environmental Protection Agency Air Quality System Raw Data Report, 2009 – 2012, dated July 2, 2013 20. Letter from Janice K. Brewer, G overnor of Arizona, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated September 25, 2013 21. Letter (with enclosure) from Eric C. Massey, Director, Air Quality, ADEQ, to Jared Blumenfeld, Regional Administrator, U.S. Environmental Protection Agency, Region 9, dated October 4, 2013 . Enclosure entitled “Technical Support Document – Relationship Between Ambient Sulfur Dioxide an d Lead Conc e n trations – Hayden, A rizona,” dated August 23, 2013 22. Memorandum “Review of Laboratory Procedures to Address Accuracy Concerns for Inter
Laboratory Bias for the Asarco Superfund Site,” from Joe Eidelberg and Mathew Plate, to Gwen Yoshimu ra and John Hillenbrand, U.S. Environmental Protection Agency, Re g i on 9 . March 3 1, 2014 23. U.S. Environmental Protection Agency Air Quality System Raw Data Report, 2010
- 2014, dated March 31, 2014 24. Final Report, Technical System Audit, ASARCO Hayden Plant Site, Ambient Air Monitoring Program, January 22 – January 28, 2014. April 2 014 25. Asarco monitors – raw data (July 3, 2013 – December 6, 2013), April 10, 2014 26. U.S. Environmental Protection Agency Air Quality System
- 2012 Design Value Report, dated April 14, 20144

27. U.S. Environmental Protection Agency, Region 9 Techn ical Support Document entitled “ Hayden Arizona – Redesignation to Nonattainment for the 2008 Lead National Ambient Air Quality Standard,” April 2014

**CATEGORY IV**  **. F**  **ederal R**  **egister Notices** 1. 57 FR 13498, April 16, 1992 2. 58 FR 67748 , December 22, 1993 3. 73 FR 66964, November 12, 2008 4. 75 FR 35520, June 22, 2010 5. 75 FR 39254, July 8, 2010 6. 75 FR 71033, November 22, 2010 7. 76 FR 36042, June 21, 2011 8. 76 FR 72097, November 22, 2011 9. 78 FR 47191, August 5, 2013

**CATEGORY V.**  **FINAL RULE** [Reserved]