Matthew Rodriquez Secretary for Env ironmental Prot ection October 8 , 2014 Mr. Matt Lakin, Chief Planning , Region 9 

# Air Resources Board Mary D . Nichols, Chairman

1001 I Street • P .O . Box 2815 Sacramento , California 95812 • www.arb . ca . gov

U . S . Environmental Protection Agency 75 Hawthorne Street San Francisco , Cal ifornia 94105 Dear Mr. Lakin : Edmund G . Brown Jr. G o vernor

On September 22 , 2014, the Air Resources Board (ARB) submitted a letter providing supporting information for paved road dust emissions for the San Joaquin Valley 2012 PM2 . 5 Plan (Plan) to the U . S . Environmental Protection Agency (U . S . EPA) . Enclosure 1 contained a typographical error in the " Updated Calculation , Total Direct PM2 . 5 " column. The corrected table is below.

Year Table 1. San Joaquin Valley Winter PM2.5 Emissions 2012 PM2.5 Plan vs. Updated Calculation Projected Emissions (tpd) 2012 PM2 . 5 Plan Updated Calculation Paved Road Total Direct Paved Road Total Direct Dust PM2.5 Dust PM2 . 5 2014 4 . 5 64.4 4 . 5 64.4 2017 4 . 5 63 . 5 4 .7 63 . 7 2019 4 . 5 64 . 0 4 . 8 64.3 If you have any further questions , please call me at (916) 445 -8699 , or by email at jtaylor@arb . ca . gov .

nathan P . Taylo r, Chief T r ansportat ion Planning Branch cc: See next page .

The en ergy cha ll enge facing Calif ornia is real. Every Cal if

ornian needs to take i mmedia t e action t o reduc e energy consumption. F

or a li s t of simple ways yo u can reduce demand and cut your energy cost s, see our website : http ://www. arb .ca . gov. Californ ia Environmental Protection Agency Pri

nted on Recycled PaperMr . Matt Lakin, Chief October 8, 2014 Page 2 cc: Mr . Tony Boren Executive Director Council of Fresno County Governments 2035 Tulare Street, Suite 201 Fresno, California 93721 Mr . Andrew Chesley Executive Director San Joaquin Council of Governments 555 East Weber Avenue Stockton, California 95202 Mr . Sheraz Gill Supervising Air Quality Specialist San Joaquin Valley Air Pollution Control District 1990 East Gettysburg Avenue Fresno , California 93726 Mr. Ahron Hakimi Executive Director Kern Council of Governments 1401 19th Street, Suite 300 Bakersfield, California 93301 Ms. Terri King Executive Director Kings County Association of Governments 339 West "D" Street , Suite B Lemoore, California 93245 Ms. Marjie Kirn Executive Director Merced County Association of Governments 369 West 18th Street Merced , California 95340 Mr . Seyed Sadredin Executive Director/Air Pollution Control Officer San Joaquin Valley Air Pollution Control District 1990 East Gettysburg Avenue Fresno, California 93726 Continued next page .Mr. Matt Lakin, Chief October 8 , 2014 Page 3 (continued) Mr. Ted Smalley Executive Director Tulare County Association of Governments 21 0 North Church Street , Suite B Visalia , California 93291 Ms . Patricia Taylor Executive Director Madera County Transportation Commission 2001 Howard Road, Suite 201 Madera , California 93637 Ms. Tanisha Taylor Senior Regional Planner San Joaquin Council of Governments 555 East Weber Avenue Stockton , California 95202 Mr. Carlos Yamzon Executive Director Stanislaus Council of Governments 1111 I Street , Suite 308 Modesto , California 95354 Ms . Sylvia Vanderspek Chief, Air Quality Planning Branch Air Quality Planning and Science Division