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South Coast AQMD is in the process of developing an "Air Quality Analysis Guidance Handbook" (Handbook) to replace the CEQA Air Quality Handbook approved by the South Coast AQMD Governing Board in 1993. The 1993 CEQA Air Quality Handbook is still available but not online. To obtain a hardcopy of the 1993 Handbook, contact South Coast AQMD's Subscription Services at (909) 396-3720. In addition, there are sections of the 1993 Handbook that are obsolete. A description of the obsolete sections can be obtained from CEQA Air Quality Handbook.
In order to assist the CEQA practitioner in conducting an air quality analysis while the new Handbook is being prepared, the following supplemental information is available:
Significance Thresholds and Analysis
Greenhouse Gases (GHG) CEQA Significance Thresholds
Localized Significance Thresholds
PM 2.5 Significance Thresholds and Calculation Methodology
South Coast AQMD Air Quality Significance Thresholds (PDF, 67kb)
Emission Factors
Off-Road - OFFROAD Model Mobile Source Emission Factors
On-Road - EMFAC 2007 (v2.3) Emission Factors
Toxic Emission Factors from Combustion Sources (PDF, 25kb)
Cumulative Impacts Emission Analysis
Potential Control Strategies to Address Cumulative Impacts from Air Pollution White Paper (PDF, 2.6MB)
Appendices (PDF, 140kb)
Future CO Concentrations
The following documents provide CO emissions and projected future concentrations in order to assist the CEQA practitioner with a CO Hotspots Analysis.
Average Annual Day CO Emission in the South Coast Air Basin (DOC, 19 kb)
Projected Future Year 1-Hour Concentration (ppm) (DOC, 23 kb)
Projected Future Year 8-Hour Concentration (ppm) (DOC, 23 kb)
Air Toxics Analysis
Mobile Source Toxics Analysis
Risk Assessment Procedures for Rules 1401 and 212
Air Quality Guidance for General Plans, Local Planning, and School Siting
Guidance Document for Addressing Air Quality Issues in General Plans, Local Planning, and School Siting
High Cube Warehouse Trip Rate Study for Air Quality Analysis
Study Home Page
Mitigation Measures
Mitigation Measures and Control Efficiencies
CAPCOA- Quantifying Greenhouse Gas Mitigation Measures (PDF, 7.7MB)
Other Useful Links
Guidance on Frequently Questioned Topics in Roadway Analysis for the California Environmental Quality Act (CEQA) (PDF, 758kb)
Western Riverside Council of Governments' Good Neighbor Guidelines for Siting New and/or Modified Warehouse/Distribution Facilities
Guidance Document for Addressing Air Quality Issues in General Plans and Local Planning
California Air Resources Board Air Quality and Land Use Handbook: A Community Health Perspective (PDF, 1.5MB)
Pilot Study of High Performance Air Filtration for Classroom Applications (PDF, 1.1MB)
South Coast Air Quality Management District
21865 Copley Dr, Diamond Bar, CA 91765
909-396-2000
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