Air Resources Board 

Mary D. Nichols, Chair 

Matthew Rodriquez 

Secretary for 

Environmental Protection 

1001 I Street • P.O. Box 2815 

Sacramento, California 95812 • www.arb.ca.gov Edmund G. Brown Jr. 

February 11 , 2016 

Mr. Jared Blumenfeld 

Regional Administrator 

Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, 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. 

Governor 

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 Control District (District). 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 for the 1-hour ozone standard represents a joint 

effort by ARB and District staff, in consultation with U.S. EPA. This submittal 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 Exceedance 

Days at Arvin - Bear Mountain. 

• Appendix C: Meteorology, Emissions, and Ozone Chemistry in the 

San Joaquin Valley. 

The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. 

For a list of simple ways you can reduce demand and cut your energy costs, see our website: http://www.arb.ca.qov. 

California Environmental Protection Agency 

Printed on Recycled Paper 
Mr. 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. 

Sincerely, 

ichard W. Corey 

Executive Officer 

Enclosures (5) 

cc: (with enclosures) 

Dr. Matthew Lakin, Acting Air Director 

Region 9, Air Division 

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 Joaquin Valley Air Pollution Control District 

1990 E. Gettysburg Avenue 

Fresno, California 93726 

Kurt Karperos 

Deputy Executive Officer 

Karen Magliano, Chief 

Air Quality Planning and Science Division 

Ravi Ramalingam, Chief 

Consumer Products and Air Quality Assessment Branch