I 

Air Resources Board 

Mary D, Nichols, Chainan 

Linda S. Adams 1001 1 Street - P.O. Box 281 5 Arnold Sohwarzel regger Secretary fbr Sa~t~mento. California 95812 - w.arb.ca.gov Governor 

Enw'mnmentdl Pmtedion 

May 13,2008 

Mr. Wayne Nastri 

Regional Administr~ltcrr 

Region 9 

U.S. Environmental Pmtedion Agency 

75 Hawthorne Street 

San Francisco, California 941 05 

Dear Mr. Nastri: 

I am writing to provide the U-S, Environmental Protection Agency (US. FPA) with 

technical correctiot~s to the 2020 transportation conformity budgets for Merced, 

San Joaquin, Stanislaus, a~d Tulare Counties contained in the 2007 San Joaquin Valley 

PMIO Maintenance Plan submitted on November 16,2007. 

These corrections stem from the operation of a module which processes input data 

entered by the user in the EMFAC 2007 on-road emissions model. The Valley 

transportation planning agencies provided updated travel activity data for 2020 for 

calculating the emissions budgets. In calculating earlier budgets, the input processor 

inadvertently used the default data instead of the user input data provided by the 

transportation agencies for 2020 for Merced, San Joaquln, Stanislaus, and Tulare 

Counties. 

The enclosed revised budgets reflect the data submitted for 2020 by the transportation 

agencies. The net change in emissions in 2020 valley-wide is a 0.2 ton per day 

increase in oxides of nitrogen, and no net change in direct PM10. These revised 

budgets are consistent with the maintenance demonstration in the plan because the 

changes in emissions are small in comparison to the total. 

The enclosed table replaces Item V in the November 2007 submittal, "Updated 

Transportation Conformity Budgets." The travel activity enclosed with the 

November 2007 submittal does reflect the data for all counties provided by the 

transportation agencies for 2020, and the submitted data was used In the calculat[on of 

paved road, unpaved road, and road construction dust. Therefore, no revisions are 

necessary to those emission categories. 

The energy ohellenge facing Calimia is real- Every Calitbmlan needs to Mlm immediate action to n%kkx? energy consumpfion. For a list of simple ways yoo can reduce demand and cut yaur energy cb*, see our website: htto!lhrvww&w. 

California Environmental Protection Agency 

Printed on Recycled Paper 
Mr. Wayne Nastri 

May 13,2008 

Page 2 

We ask that you process these technical corrections to the transportation conformity 

budgets as soon as possible. If you have any questions, please feel free to cantact 

Mr. Dennis Wade, Air Pollution Specialist, Air Quality and Transportation Planning 

Branch, at (916) 327-2963, or email dwade@wrb.ca.gov. 

Sincerely, 

James Executive Nm G"12f!w Offi r 

Enclosure 

cc: Dr. Deborah Jordan, Director 

Air Division, Region 9 

U.S. Environmental Protection Agency 

75 Hawthorne Street 

San Francisco, California 941 05 

Mr. Seyed Sadredin 

Executive DirectorlAir Pollution Control Officer 

San Joaquin Valley Air Pollution Control District 

1990 East Gettys burg Avenue 

Fresno, California 93726 

Ms. Barbara Gaodwin 

Executive Director 

Council of Fresno Court@ Governments 

2035 Tulare Street, Suite 201 

Fresno, California 93721 

Mr. Ronald Brl~mmett 

Executive Director 

Kern Council of Governments 

1401 lgth Street, Suite 300 

Bakersfield, Ca.llfornia 93301 
Mr. Wayne Nastri 

May 13,2008 

Page 3 

Ms. Terri King 

Executive Director 

Kings County Association of Governments 

339 West "Dl' Street, Suite B 

Lemoore, California 93245 

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 1 8th Street 

Merced, California 95340 

Mr. Andrew Chesley 

Executive Director 

San Joaquin Council of Governments 

555 East Webet 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 

Viselia, California 93277 

Mr. Dennis Wade 

Planning and Technical Support Division 
Motor Vehicle Emission Budgets 

f9r 

San Joaquin Valley PMIO Maintenance Plan 

Annual Average, Tons per Day 

May, 2008