Linda S. Adams

Secretary for 

Environmental Protection

 

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.gov. 

California Environmental Protection Agency

Printed on Recycled Paper

Air Resources Board 

 

Mary D. Nichols, Chairman 

1001 I Street • P.O. Box 2815 

Sacramento, California 95812 • www.arb.ca.gov 

Arnold Schwarzenegger

 Governor 

February 1, 2008 

Mr. Wayne Nastri 

Regional Administrator 

Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 94105 

Dear Mr. Nastri: 

I am writing to provide the U.S. Environmental Protection Agency (U.S. EPA) with 

additional technical information supporting the reasonable further progress (RFP) 

demonstrations for the South Coast and the San Joaquin Valley ozone State 

Implementations Plans (SIP). ARB submitted the South Coast and the San Joaquin 

Valley SIPs, including RFP demonstrations, on November 20, 2007 and 

November 28, 2007 respectively. 

The additional information relates to the calculated benefits of the pre-1990 federal 

motor vehicle program in both RFP demonstrations. Under federal law, states cannot 

take credit for the benefits of the pre-1990 federal motor vehicle toward meeting RFP 

requirements. For the San Joaquin Valley, we also included vehicle activity data 

consistent with the SIP and transportation conformity budgets submitted in November 

but inadvertently left out of the RFP calculation. 

Over the years, various methods have been used to estimate the benefits of the pre1990 federal motor vehicle program. California used one approach in the SIPs 

submitted in November 2007. In the attached calculations, ARB used another method 

now preferred by U.S. EPA. By our accounting, the latest U.S. EPA method 

underestimates the progress that results from California’s motor vehicle controls by 

overestimating the residual benefits of the pre-1990 federal motor vehicle program. 

Nevertheless, both the RFP calculations in the November submittals and the 

information provided here show the required progress. 
Mr. Wayne Nastri 

February 1, 2008 

Page 2 

We look forward to working with U.S. EPA to secure approval of California’s ozone 

SIPs. If you have any questions, please feel free to contact me, at (916) 445-4383, or 

Ms. Lynn Terry, Deputy Executive Officer, at (916) 322-2739. 

Sincerely, 

/s/ 

James N. Goldstene 

Executive Officer 

Enclosures 

cc: See next page. 
Mr. Wayne Nastri 

February 1, 2008 

Page 3 

cc: Dr. Deborah Jordan, Director 

Air Division, Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 94105 

 

Mr. Hasan Ikhrata 

Executive Director 

Southern California Association of Governments 

818 W. Seventh Street, 12th Floor 

Los Angeles, California 90017 

Dr. Barry Wallerstein 

Executive Officer 

South Coast Air Quality Management District 

21865 Copley Drive 

Diamond Bar, California 91765 

Mr. Seyed Sadredin 

Executive Director/Air Pollution Control Officer 

San Joaquin Valley Air Pollution Control District 

1990 East Gettysburg Avenue 

Fresno, California 93726 

Ms. Barbara Goodwin 

Executive Director 

Council of Fresno County Governments 

2035 Tulare Street, Suite 201 

Fresno, California 93721 

Mr. Ronald Brummett 

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 
Mr. Wayne Nastri 

February 1, 2008 

Page 4 

Ms. Patricia Taylor 

Executive Director 

Madera County Transportation Commission 

1816 Howard Road, Suite 8 

Madera, California 93637 

Mr. Jesse Brown 

Executive Director 

Merced County Association of Governments 

369 West 18th Street 

Merced, California 95340 

Mr. Andrew Chesley 

Executive Director 

San Joaquin Council of Governments 

555 East Weber Avenue 

Stockton, California 95202 

Mr. Vince Harris, Director 

Stanislaus Council of Governments 

900 H Street, Suite D 

Modesto, California 95354 

Mr. George Finney 

Executive Secretary 

Tulare County Association of Governments 

5961 South Mooney Boulevard 

Visalia, California 93277 

Ms. Lynn Terry 

Deputy Executive Officer 

Air Resources Board