State of California 

### Air 

### Resources Board

BOARD ITEM SUMMARY

ITEM # 07-11-5: Public Hearing to Consider Approval of Modified Transportation Conformity Budgets Contained in the 2007 Air Quality Management Plan for Attaining the Federal 8-Hour Ozone and PM2.5 Standards in the South Coast Air Basin and the 8-hour Federal Ozone Standard inthe Coachella Valley.
STAFF RECOMMENDATION: Staff recommends that the Board approve the modified transportation conformity budgets for the South Coast Air Basin and CoachellaValley, and direct the Executive Officer to transmit the modified budgets to the U.S. EPA as revisions to the California State lmplementation Plan.
DISCUSSION: At a public meeting held September 27, 2007, the Air Resources Board approved the 2007 Air Quality Management Plan (AQMP) for Attaining the Federal 8-hour Ozone and PM2.5 Standards in the South Coast Air Basin and the Coachella Valley, adopted by the South Coast Air Quality Management District,for submittal as a revision to the State lmplementation Plan. The AQMP includes transportation conformity budgets. At the same meeting, the Board approved a State Strategy for California's 2007 State lmplementation Plan. Differences between the approved State Strategy and the state measures assumed in the 2007 AQMP require minor changes to the transportation conformity budgets.
SUMMARY AND IMPACTS: Approval of the modified transportation conformity budgets will allow the Southern California Association of Governments to make transportation conformity findings as required by the federal Clean Air Act ontransportation plans, funding programs and projects.

# Air Resources Board Mary D. Nichols, Chairman LindaS. Adarns 1001 I Street P.O. Box 2815 Arnold Schwarzenegger

Secretary for Sacramento, California 95812 www.arb.ca.gov Governor Environmental Protection

BACKGROUND INFORMATION
AGENDA ITEM 07-1 1-5, MODIFICATIONS TO TRANSPORTATION CONFORMITY BUDGETS FOR SOUTH COAST AIR BASINAND COACHELLA VALLEY
At a public meeting held Septerrlber 27, 2007,the Air Resources Board (ARB or Board) approved changes to the State Implementation Plan (SIP)for attaining the federal 8-hour ozone and PM2.5 standards in the South Coast Air Basin and the Coachella Valley for submittal as a revisionto the California SIP. The revisions consisted of local control measures and technical plan elements included inthe 2007 Air Quality Management Plan (2007AQIMP) adopted bythe South Coast Air Quality Management District (District), and the commitmentsfor reductionsfrom State and federal sources as identified inthe State Strategy for California's 2007 SIP.
The 2007 AQMP included transportation conformity emissions budgets. These emissions budgets are necessaryfor the Southern California Association of Governments (SCAG)to comply with the transportation conformity provisions of the federal CleanAir Act. The budgets must be consistent with the assumptions made in the adopted SIP. When the District adoptedthe 2007 AQMP on June 

### I, 2007, it made certain assumptions about mobile source controls. Differences betweenthe assumptions inthe locally adopted 2007 AQMP and the State Strategy that ARB subsequently adopted require minor changesto the transportation conformity budgets. Agenda Item07-1 1-5, Modificationsto Transportation Conformity Budgets for the So~~th Coast Air Basin and Coachella Valley, would replacethetransportation conformity budgets adopted as part of the 2007 AQMP with budgets that reflect the approved State Strategy. The modified transportation conformity budgets could not be considered at the September meeting because of federal public notice requirements. The transportation conformity budgets the Boardwill consider on November 15,2007 (see following) were developed in consultation with SCAG and the District. The proposed budgets have been noticed and made availableto the public. The only changes reflected in the proposed budgets are emission reductions associated with the State Strategy.
For any questions concerning the Board item, please contact Mr. Kurt Karperos, Chief of the Air Quality and Transportation Planning Branch, at (91 6) 445-561 0.

The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. Fora list of simple ways you can reduce demand and cutyour energy costs, see our website: http://www.arb.ca.qov. California Environmental Protection Agency

Prrnted on Recycled Paper


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