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Air Quality Mitigation Strategies

CEQA requires Lead Agencies to mitigate or avoid significant environmental impacts associated with discretionary projects. Environmental documents for projects that have any significant environmental impacts must identify feasible mitigation measures or alternatives to reduce the impacts below a level of significance. The District considers the following measures as feasible mitigation in light of existing regulations and research.

Effective types of mitigation depend on the size and type of project being considered. What works for a large general plan update would not be appropriate for a single 50-house subdivision project. Thusly, the District has the following suggested mitigation strategies for the following project types:

General plan updates, large specific plans, new town

General plan amendments, small specific plans, and some zone changes

Tentative maps, site plans, conditional use permits

Specific Air Quality Mitigation Strategies

Project Type:

  • Tentative Maps, Site Plans, Conditional Use Permits


  • Cumulative ozone impacts, CO, toxic air emissions, odors


  • Mitigation Measures
  • Apply general plan policies and local ordinances and programs from above to the project site
  • Pedestrian/Transit oriented site design
  • Provide on-site improvement: bikeways, transit infrastructure, pedestrian enhancements
  • Contribute to Local Air Quality Mitigation Fee Fund
  • Contribute to TCM implementation
  • Energy conservation measures above and beyond requirements
  • Pay for fleet vehicle conversions to alternative fuels