2023, Attainment Plan for the 2008 & 2015 8-hour Ozone NAAQS

The District prepared and adopted an Ozone Attainment Plan on May 4, 2023, to satisfy the requirements of the Federal Clean Air ACT (FCAA) pursuant to the 2008 and 2015, 8-Hour Ozone National Ambient Air Quality Standards (NAAQS). The plan presents the District’s strategy, which includes mandated elements, to attain the 2008, 8-hour NAAQS by 2027 and the 2015 NAAQS by 2032. The Ozone Attainment Plan is currently being reviewed by CARB and EPA and expected to be approved and adopted by both agencies in the near future.

The 2023 Ozone Attainment Plan and associated appendicies can be downloaded through the following links:

2023 Attainment Plan for the 2008 & 2015 8-Hour Ozone NAAQS

Appx A: Emission Inventory of O3 Precursors & Projected Inventory
Appx B: CARB Modeling Emission Inventory for O3 Plan
Appx C: Emissions Offset Demonstration
Appx D: Day-of-Week Redistribution Factors by Vehicle Type and County
Appx E: Hour-of-Day Profiles by Vehicle Type and County
Appx F: Additional Temporal Profiles
Appx G: Spatial Surrogate Assignments
Appx H: CARB 2022 Mobile Source Program
Appx I: CARB Control Measures, 1985 to 2018
Appx J: 2022 State Strategy for the SIP
Appx K: 70 ppb Emissions Statement and Certification
Appx L: Weight of Evidence
Appx M: Modeling Protocol & Attainment Demonstration
Appx N: EKAPCD RACT SIP 2008, Ozone NAAQS
Appx O: EKAPCD RACT SIP 2015, Ozone NAAQS

Attainment Plan Workshop (presentation)

Additional Attainment Documents

EKAPCD Attainment Status (Current)

2008 (75 ppb) and 2015 (70 ppb) RACT SIP (2023)

2015, Ozone NAAQS (70 ppb) Emissions Statement and Certification (2021)

Indian Wells Valley 2nd PM10 Maintenance Plan (2020)

AB 617 BARCT Expedited Implementation Schedule (2018)

1997 Ozone NAAQS Attainment (2012)