# Air Resources Board Mary D . Nichols , Chair Matthew Rodriquez Secretary for En v ironm e nt

al Protect ion 1001 I Street • P . O . Box 2 8 1 5 Sacra m en to , Cali fo rn ia 95 812 • www . arb . ca . g ov Edmund G. Brown Jr. February 11 , 2016 M r. Jared Blumenfeld Regional Administrator Region 9 U . S . Env i ronmental Protection Agency 75 Hawthorne Street San Franc isco , California 94105 Dear Mr . Blumenfeld: The Air Resources Board (ARB) is pleased to submit to the U . S. Environmental Protection Agency (U.S . EPA) a request for a clean data determination for the San Joaquin Valley for the national1-hour ozone standard . Gov erno r

Attainment of the 1-hour ozone standard has been brought about through comprehensive control programs imple111ented by ARB and the San Joaquin Valley Air Pollution Cont rol District (Dist rict ) . Meeting the 1-hour ozone standard serves as a milestone as the Valley progresses toward attaining the more health protective 8 - hour ozone standards. The clean data determination request fo r the 1 - hour ozone standard represents a joint effort by ARB and District staff, i n consultation with U . S . EPA. This subm ittal includes one hard copy and one identical electronic copy of the following materials (enclosed). 1 . ARB Staff Report , San Joaquin Va/ley 1 Hour Ozone Clean Data Determination. • Appendix A: San Joaquin Valley 1-Hour Ozone Estimated Expected Number of Exceedance Days and Missing Data Analysis. • Appendix B : Estimated Design Values and Expected Number of Ex ceedance Days at Arvin - Bear Mountain . • Appendix C : Meteorology , Emissions , and Ozone Chem istry in the San Joaquin Valley .

The energy c hallenge f acing California is r e al . Every Californian need s to take i mmediate action to reduc e energy cons umpti on. For a list ofsi mple ways yo u can reduce demand and c ut your energy cos t s, see our websi te : http ://www .a rb . ca .q ov. Cal ifornia Environmental Protection Agency Pr

inted o n Rec ycled PaperMr. Jared Blumenfeld February 11 , 2016 Page 2 2 . July 13, 2015, letter from Mr. Seyed Sadredin, District Executive Director/Air Pollution Control Officer , to Mr . Jared Blumenfeld , U.S . EPA Region 9 Regional Administrator, and Mr . Richard Corey, ARB Executive Officer , including: • District report , Attainment Determination Request .for the Revoked 1-hour Ozone Standard. • Attachment A : Arvin Ozone Saturation Study ARB is committed to working with U . S . EPA staff to provide any additional clarifying information you may need . If you have any questions , please contact Mr . Kurt Karperos , Deputy Executive Officer, at (916) 322-2739 , or have your staff contact Mr . Ravi Ramalingam , Chief, Consumer Products and Air Quality Assessment Branch, at (916) 322-2085 . Since rely ,

ichard W . Corey Executive Officer Enclosures (5) cc: (with enclosures) Dr. Matthew Lakin , Acting Air Director Region 9 , Air Div ision U.S . Environmental Protection Agency 75 Hawthorne Street San Francisco , California 94105 Kerry Drake , Associate Director Region 9, Air Division U. S . Environmental Protection Agency 75 Hawthorne Street San Francisco , California 94105 Dr. Meredith Kurpius, Chief Air Quality Analysis Branch Region 9 , Air Division U.S. Environmental Protection Agency 75 Hawthorne Street San Francisco , California 94105 Continued next page .

### Mr. Jared Blumenfeld February 11 , 2016 Page 3

cc : Seyed Sadredin , Executive Director/Air Pollution Control Officer San Joaqu i n Valley A i r Pollution Control Distri c t 1990 

### E. Gettysbu rg Avenue Fresno , California 93726 Kurt Karperos Deputy E xecutive Officer Karen Magliano , Chief Air Quality Planning and Science Divis ion Ravi Ramalingam , Chief Consumer Products and Air Quality Assessment Branch