In 2015, U.S. Environmental Protection Agency (EPA) promulgated a new National Ambient Air Quality Standards (NAAQS) for Ozone at a maximum daily 8-hour average concentration of 0.070 parts per million (ppm). The Sacramento Federal Nonattainment Area (SFNA, map) exceeded the standard and based on the modeling forecast, the SFNA air districts have requested a classification to "Severe" with attainment deadline of August 3, 2033. The Sacramento Regional 2015 National Ambient Air Quality Standard 8-Hour Ozone Attainment and Reasonable Further Progress Plan (Plan) below addresses the Clean Air Act planning requirements associated with the "Severe" classification.
The Plan includes the elements of ozone trends, emissions inventories, photochemical modeling, attainment demonstration, ozone transport, conformity (general and transportation), reasonable further Progress (RFP), weight of evidence, vehicle miles traveled (VMT) offset demonstration, reasonably available control measure (RACM) analysis, statewide control measures, and proposed state and local contingency measures.
App A-1-1 Estimated Emissions Forecast Summary
App F-6-1-II Placer County Ozone data between 01/01/2015 and 09/21/2019
Sacramento Federal Nonattainment Area (SFNA) air districts held public hearings to consider adoption of the Plan. The Plan covers the SFNA, which comprises with Sacramento and Yolo counties, and portions of El Dorado, Placer, Solano, and Sutter counties. As of October 17, 2023, the plan has been adopted by all the SFNA air districts. The links of the transmittal documents are available below.
Date, time, and Transmittal Package
Sacramento Metropolitan Air Quality Management District
Thursday, September 28, 2023, 9:00am
SIP Transmittal Pacakge (pdf)
El Dorado Air Quality Management District
Tuesday, October 17, 2023, 9:00am
SIP Transmittal Package (pdf)
Feather River Air Quality Management District
Monday, October 2, 2023, 4:00pm
Placer County Air Pollution Control District
Thursday, October 12, 2023, 2:30pm
Yolo-Solano Air Quality Management District
Wednesday, October 11, 2023, 9:00am
Thursday, October 26, 2023, 11:00am
Byron Sher Auditorium, 2nd Floor
1001 I Street, Sacramento, California 95814
SIP Package (link)