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Proposed State Strategy for California's State Implementation Plan (SIP)
for the New Federal PM2.5 and 8-Hour Ozone Standards

This page last reviewed February 9, 2010

Geographical areas in the State that exceed the federal air quality standards are called non-attainment areas.  There are 15 non-attainment areas for the federal ozone standard and two non-attainment areas for the PM2.5 standard.  The Ozone SIP and PM2.5 SIP must be adopted and sent to the U.S. Environmental Protection Agency by June 2007 and April 2008, respectively.  The SIP must show how each area will attain the federal standards.  To do this, the SIP will identify the amount of pollution emissions that must be reduced in each area to meet the standard and the emission controls needed to reduce the necessary emissions.

For each area that violates federal air quality standards, local air districts and ARB will craft a plan that will include measures to reduce emissions from sources under local government authority, as well as a strategy for emission reductions from sources under state and federal agency jurisdictions.


2009 Status Report and Revision to the California 2007 State Implementation Plan
On April 23, the Air Resources Board adopted a staff proposal to consider a revision to the SIP reflecting implementation of the 2007 State Strategy since it was adopted. The U.S. Environmental Protection Agency (U.S. EPA) requested this revision to aid U.S. EPA’s approval of the SIP. The proposed revision accounts for emission reductions from the regulations adopted in 2007 and 2008, clarifies ARB’s legal commitments in light of U.S. EPA’s approval criteria, and clarifies the discussion of the long-term strategy for identifying future technologies to achieve the last increment of reductions. The proposed revision does not change the emission reductions of oxides of nitrogen, reactive organic gases, oxides of sulfur and direct PM2.5 that the Board committed to achieve by specific years when it adopted the 2007 State Strategy. The proposed revision also includes a commitment for emission reductions in the Sacramento area, since its attainment plan will be considered by the Board at its March 2009 hearing when it considers approval of the SIP for the Sacramento area. The reductions in Sacramento from the statewide measures in the 2007 State Strategy had not been quantified at the time the 2007 State Strategy was adopted and so are not reflected in the 2007 State Strategy. For clarity, staff is now proposing to revise the State Strategy to reflect this commitment. ARB staff has prepared a document entitled, Status Report on the State Strategy for California’s 2007 State Implementation Plan and Proposed Revision to the State Implementation Plan Reflecting Implementation of the 2007 State Strategy (Status Report and Proposed SIP Revisions).

  • Transmittal Letter to U.S. EPA of the adopted revision to California's SIP Reflecting Implementation of the 2007 State Strategy.
  • Board Resolution Adopting 2007 SIP Revision - #09-34 (April 24, 2009)
  • Public Notice to Consider Status Report on the State Strategy for California's 2007 State Implementation Plan and Consider Approval of  A Proposed Revision to the SIP Reflecting Implementation of the 2007 State Strategy  
  • ARB Staff Report and Revision: Status Report on the State Strategy for California’s 2007 State Implementation Plan and Proposed Revision to the SIP Reflecting Implementation of the 2007 State Strategy

Statewide Strategy Approval Documents

On September 27, 2007, ARB adopted its State Strategy for the 2007 SIP.  The State Strategy consists of the April 26, 2007 draft strategy and several changes that were made as ARB staff proceeded through the public comment and Board adoption process.  The April 2007 draft, proposed changes, and adopted documents are listed below. 

Transmittal Letter to U.S. EPA  of the State Strategy for the California State Implementation Plan (November 16, 2007)

Board Resolution Adopting 2007 State Strategy - #07-28 (September 27, 2007)

  • Attachment A - Technical and Clarifying Modifications to April 26, 2007 Revised Draft Air Resources Board’s Proposed State Strategy for California’s 2007 State Implementation Plan and May 7, 2007 Revised Draft Appendices A through G
  • Attachment B - Proposed Modifications to the Air Resources Board’s Proposed State Strategy for California’s 2007 State Implementation Plan that will Achieve 30 Tons Per Day of Additional Emission Reductions in the South Coast by 2014 and 88 to 93 Tons Per Day of Emission Reductions in the San Joaquin Valley by 2017

Board Hearing Transcripts

Executive Order S-07-002  for the Approval of the State Strategy for California's State Implementation Plan (SIP) for the Federal 8-hour Ozone and PM2.5 Standards

Transmittal Letter to U.S. EPA for the Revised Pesticide Element of the 1994 Ventura County Nonattainment Ozone Plan

Resolution for the Revised Pesticide Element of the 1994 Ventura County Nonattainment Ozone Plan

Executive Order S-07-003 for the Revised Pesticide Element of the 1994 Ventura County Nonattainment Ozone Plan

  • Appendix H:  Proposed Revision to the Pesticide Element of the 1994 Ozone SIP for the Ventura County Nonattainment Area

    • September 2007 Proposal for Revised State Strategy

    Continuation of Public Meeting on Proposed State Strategy - September 27-28, 2007 

    April 26 State Strategy Documents

    Draft Statewide Air Quality Plan

    One of the Air Resources Board’s responsibilities is to propose the State and federal strategy for the SIP to reach the federal standards. The SIP is a comprehensive strategy designed to attain federal air quality standards as quickly as possible through a combination of technologically feasible and cost-effective measures. It outlines ARB staff's assessment of how far adopted regulations will take us towards attainment of federal standards, what new actions could be taken, how the timing of new technology and incentive funds comes into play, and what are the earliest feasible timeframes for meeting standards is likely to be in each region.


    Appendix C:  Revised Interstate Transport SIP

    Technical Modifications to April 26, 2007 Revised Draft of Proposed State Strategy


    REVISED DRAFT - April 26, 2007

    May 7, 2007 Appendices to the April 26, 2007 Revised Draft

    • Appendix A:  Emission Inventory Output Tables
    • Appendix B:  Infrastructure SIP
    • Appendix C:  Interstate Transport SIP
    • Appendix D:  Reasonable Further Progress and Contingency Reductions
    • Appendix E:  Potential Impacts of State Strategy Proposed New Measures
    • Appendix F:  Emission Inventory Description
    • Appendix G:  Legal Authority and Other Requirements   
    • Appendix H:  Proposed Revision to the Pesticide Element of the 1994 Ozone SIP for the Ventura County Nonattainment Area
      •

    DRAFT - January 31, 2007

    Previous Workshops

    ARB staff will be holding public meetings to discuss the development of plans for meeting the new federal standards, and to specifically receive public comment on the preliminary State and federal control measures.


    Information on District air quality management plans can be accessed at: http://www.arb.ca.gov/planning/sip/sip.htm  . If you have any questions or need more information, please contact Mr. Ravi Ramalingam of ARB's Planning and Technical Support Division at (916) 322-2085 or     rramalin@arb.ca.gov.

    California State Implementation Plan

     

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    the umbrella of the California Environmental Protection Agency.
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