California Air Resources Board

The Federal Clean Air Act (CAA) requires each state to adopt and submit to the U.S. EPA, a plan that provides for implementation, maintenance, and enforcement of the National Ambient Air Quality Standards (NAAQS). This plan, generally referred to as an Infrastructure SIP, describes the infrastructure (authorities, resources, and programs) California has in place to implement, maintain, and enforce the NAAQS. The Infrastructure SIP revision is administrative in nature and does not contain any proposals for emission control measures.

• 2024 California Transport SIP Amendment
  • The California Air Resources Board 2024 Transport State Implementation Plan (SIP), which details California's plan to address the interstate transport portion of the Infrastructure SIP by replacing the previously disapproved Transport SIP with an updated SIP fully addressing the requirements of the Clean Air Act Section 110(a)(2)(D)(i)(I) is now available for public review.
    • 2024 Transport State Implementation Plan
    • Appendix A
    • Appendix B
• 2018 California Infrastructure SIP Revision
• 2015 Interstate Transport SIP
• 2014 California Infrastructure SIP Revision

Area Source Categories

Aerosol Coatings and Consumer Products (June 2020)

4.8 Marine Petroleum Loading

October 1997 Methodology

4.9 Marine Petroleum Unloading

October 1997 Methodology

4.10 Gasoline Dispensing Facilities

April 2018 Methodology

Supporting Documentation

Gasoline Dispensing Facilities Umbrella Document

Revised Emission Factors for Phase II Vehicle Fueling at
California Gasoline Dispensing Facilities

Revised Emission Factors for Phase I Gasoline Bulk Transfer at
California Gasoline Dispensing Facilities

Revised Emission Factors for Pressure Driven Emissions at
California Gasoline Dispensing Facilities

Revised Emission Factors for Gasoline Spillage at
California Gasoline Dispensing Facilities

Proposed Emission Factors for Gasoline Dispensing Hose Permeation at
California Gasoline Dispensing Facilities

4.11 Gasoline Cargo Tanks

June 2002 Methodology

Districts Methodologies

Santa Barbara County Air Pollution Control District

Gasoline Dispensing Facilities (October 2017)

7.9 Paved Road Dust

March 2021 Update | Summary

March 2018 Update | Summary

November 2016 Update | Summary

August 1997 Update | Summary

Estimation Methodology Background Document (1997)

District Methodologies

San Joaquin Valley Air Pollution Control District

Paved Road Dust (June 2003)

7.4 Agricultural Land Preparation Operations

April 2016 Methodology Update (2012 Harvested Acreage)

Prior Updates

December 2013 Methodology Update (2005 & 2007 Harvested Acreage)

January 2003 Methodology Update | Summary

August 1997 Methodology | Summary

August 1997 Appendix A, Agricultural Activity Based Temporal Profiles

7.5 Agricultural Harvest Operations

March 2017 Methodology Revision (2012 Harvested Acreage)

Prior Updates

April 2016 Methodology Update (2012 Harvested Acreage)

December 2013 Methodology Update (2005 & 2007 Harvested Acreage)

January 2003 Methodology Update (1993 Harvested Acreage)

August 1997 Methodology

August 1997 Appendix A, Agricultural Activity Based Temporal Profiles

Supporting Documentation for 7.4 and 7.5

2012 California Harvested Crop Acreage

2007 SJV Harvested Crop Acreage

2005 Non-SJV Harvested Crop Acreage

Revised Rice Land Preparation Emission Factor and Temporal Profiles

Crop Profile and Land Preparation PM10 Emission Factor Assignments

Crop Emission Factor Assumptions and PM10 Harvest Emission Factor Table

2012 Revised Almond Harvesting Emission Factor

Crop Calendars

2006 PM2.5 Speciation Profile Update

Detailed Documentation for the SJV 2003 SIP Revision

7.6 Cattle Feedlot Dust/Livestock Wastes

May 2004 Methodology Update (Cattle Only)

February 2020 Methodology Update (Non-Cattle)

Area Source Categories

Stationary Non-Agricultural Engines - Diesel (September 2003)

District Methodologies

Sacramento Metropolitan Air Quality Management District

Stationary - Other Fuel (February 2019)

Recent and historical SIP activity for 8-hour ozone in the Western Mojave Desert and the former Southeast Desert Modified Air Quality Management nonattainment areas. The Western Mojave Desert Ozone Nonattainment Area consists of the Antelope Valley portion of Los Angeles County and the southwestern portion of San Bernardino County. The Antelope Valley Air Quality Management District (AVAQMD) has jurisdiction over the Los Angeles County portion, and the Mojave Desert Air Quality Management District (MDAQMD) has jurisdiction over all of San Bernadino County including the portion within the Western Mojave Desert Ozone Nonattainment Area.

• 2022 8-Hour Ozone SIP: Western Mojave Desert Nonattainment Area
• 2016 8-Hour Ozone SIP: Western Mojave Desert Nonattainment Area
• 2015 8-Hour Ozone Reasonably Available Control Technology (RACT) SIP Analysis: Antelope Valley Air Quality Management District
• 2015 8-Hour Reasonably Available Control Technology (RACT) SIP Analysis: Mojave Desert Air Quality Management District
• 2014 Updates to the 1997 8-Hour Ozone Standards SIPs: Coachella Valley and Western Mojave Desert 8-Hour Ozone Nonattainment Areas
• February 2008 Ozone Early Progress Plans
• 2007 Western Mojave Desert Ozone Attainment Plan
• 2004 Southeast Desert Modified Air Quality Maintenance Area Ozone Plan
• 1995 Mojave Desert Planning Area PM10 Attainment Plan