Matthew Rodriquez 

Secretary for 

Environmental Protection 

September 5, 2014 

Mr. Jared Blumenfeld 

Regional Administrator 

Region 9 

Air Resources Board 

Mary D. Nichols, Chairman 

1001 I Street • P.O. Box 2815 

Sacramento, California 9581 2 • www.arb.ca.gov 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 94105 

Dear Mr. Blumenfeld: 

Edmund G. Brown Jr. 

Governor 

Enclosed is a revision to the California State Implementation Plan (SIP). This revision 

consists of South Coast Air Quality Management District (District) Rule 2449, 

Control of Oxides of Nitrogen Emissions from Off-Road Diesel Vehicles. Rule 2449 was 

amended by the District on July 11 , 2014. Also enclosed is the Air Resources Board 

(ARB) Executive Order S-14-012 adopting the District's rule as a revision to the SIP. 

To meet the U.S. Environmental Protection Agency criteria for determining that rule 

submittals are administratively and technically complete, we have enclosed a SIP 

submittal checklist. We have also enclosed an evaluation of the effects of the rule on 

emissions, evaluation of the rule's consistency with 40 CFR 51 , and other supporting 

documentation provided to us by the District. Two compact discs and two paper copies, 

each containing the revision, are enclosed. 

If you have any questions, please have your staff contact Ms. Carol Sutkus, Manager, 

South Coast Air Quality Planning Section, at (916) 322-1229 or by email at 

csutkus@arb.ca.gov. 

Sincerely, 

Enclosure(s) 

cc: See next page. 

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:/lwww.arb.ca.gov. 

California Environmental Protection Agency 

Printed on Recycled Paper 
Mr. Jared Blumenfeld 

September 5, 2014 

Page 2 

cc: Dr. Barry Wallerstein 

Executive Officer 

South Coast Air Quality Management District 

21865 Copley Drive 

Diamond Bar, California 91765-4182 

Ms. Carol Sutkus, Manager 

South Coast Air Quality Planning Section 

Air Quality Planning and Science Division 
Mr. Jared Blumenfeld 

September 5, 2014 

Page 3 

bee: Aron Livingston, OLA 

Pam Biggins, ASD (1 05 Grant Conditions) 

Kurt Karperos, AQPS 

Karen Magliano, AQPS 

Sylvia Vanderspek, AQPS 

Monica Lewis, AQPS 

Austin Hicks, AQPS 

Mr. Andy Steckel, Chief 

Rulemaking Office (Air-4) 

Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 95105 

Mr. John Ungvarsky 

Planning Office (Air-2) 

Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 95105 

Mr. Kenneth Koyama 

Executive Director 

California Air Pollution Control 

Officers Association 

1107 Ninth Street, Suite 210 

Sacramento, California 95814 

EO Chron (with Enclosures) 

AQPS Chron (with Enclosures) 

SIP Library (with Enclosures) 

Assignment: AQPS #9263/ ARB #18712 

Y:\Completed SIPs\CARB SIP 2014-09-dd South Coast Expedited\Cover Letter.doc 

Enclosure: 

Y:\Completed SIPs\CARB SIP 2014-09-dd South Coast Expedited\Executive 

Order S-14-012.doc