Revised Draft 

Air Resources Board’s 

Proposed State Strategy for California’s 

2007 State Implementation Plan 

Release Date: April 26, 2007 

This document has been prepared by the staff of the California Air Resources 

Board. Publication does not signify that the contents reflect the views and 

policies of the Air Resources Board. The Air Resources Board will consider this 

document as a revision to the California State Implementation Plan at a noticed 

public meeting tentatively scheduled for June 21-22, 2007. 

Air Resources Board 

California Environmental Protection Agency 
Electronic copies of this document can be found on ARB’s website at 

http://www.arb.ca.gov/planning/sip/sip.htm. Alternatively, paper copies may be 

obtained from the Public Information Office, Air Resources Board, 1001 I Street, 

Visitors and Environmental Services Center, 1st Floor, Sacramento, California 

95814, (916) 322-2990. 

For individuals with sensory disabilities, this document is available in Braille, 

large print, audiocassette, or computer disk. Please contact ARB’s Disability 

Coordinator at (916) 323-4916 by voice or through the California Relay Services 

at 711, to place your request for disability services. If you are a person with 

limited English and would like to request interpreter services, please contact 

ARB’s Bilingual Manager at (916) 323-7053. 

This document has been prepared by the staff of the California Air Resources 

Board. Publication does not signify that the contents reflect the views and 

policies of the Air Resources Board, nor does trade names or commercial 

products constitute endorsement or recommendation for use. 

Please send written comments to:

Mr. Kurt Karperos, P.E., Chief 

Air Quality and Transportation Planning Branch 

California Air Resources Board 

P.O. Box 2815 

Sacramento, California 95812 

Phone: (916) 322-0285 

Fax: (916) 322-3646 

For general questions, contact:

Mr. Ravi Ramalingam, P.E., Manager 

Transportation Strategies Section 

Phone: (916) 322-2085 

Email: rramalin@arb.ca.gov
Air Resources Board’s 

Proposed State Strategy for California’s 

2007 State Implementation Plans 

TABLE OF CONTENTS 

EXECUTIVE SUMMARY......................................................................................1 

1. BACKGROUND.......................................................................................11

• General SIP Requirements 

• National Air Quality Standards 

• Health Effects of Ozone and PM2.5 

• Nonattainment Areas and Air Quality Trends 

• Development of State Strategy 

• Air Pollution Transport 

• Other Programs 

2. TECHNICAL FOUNDATION....................................................................25

• Emissions Inventory Overview 

• Forecasting Future Emissions 

• Top Emission Sources 

• Setting the Emission Reduction Targets 

3. ARB’S 2007 SIP STATE STRATEGY.....................................................35

• Agency Roles in SIP Measure Development 

• Adopted SIP Measures 

• ARB’s Proposed New SIP Measures 

• Need for Technology and Long-Term Measures 

• Process for Identifying Long-Term Emission Reductions 

• State Implementation Plan Commitments 

• Commitments to Reduce Emissions 

• Commitment to Propose Defined New SIP Measures 

• Commitment to Reduce Emissions via Long-Term Strategy 

• Role of Funding and Incentive Programs 

• Federal Actions Needed 

• Ozone Attainment Demonstrations 

• Tracking Progress 

• Contingency Measures Requirement 
4. PM2.5 ATTAINMENT IN THE SOUTH COAST.......................................72

• Nature of PM2.5 Pollution 

• PM2.5 Emission Trends – Steadily Getting Better 

• The PM2.5 Challenge 

• Closing the Gap with Direct PM2.5 Reductions 

• Analysis of South Coast Air District Staff’s Proposed Additional Mobile 

Source Measures 

• How to Advance South Coast PM2.5 Attainment – Recommendations 

for Board Consideration 

5. PROPOSED NEW SIP MEASURES -- DESCRIPTIONS ........................89

APPENDICES (Not included in this draft -- will be available by May 7, 2007.) 

Appendix A: Emission Inventory Output Tables

Appendix B: Infrastructure SIP

Appendix C: Interstate Transport SIP

Appendix D: Reasonable Further Progress and Contingency 

 Calculations

Appendix E: Potential Impacts of State Strategy Proposed 

 New Measures

Appendix F: Emission Inventory SIP

Appendix G: Legal Authority and Other Requirements