Sacramento's Air Clean Enough to Pause Old Pollution Rules
Published Date: 9/14/2026
Proposed Rule
Summary
The EPA says the Sacramento Metro area in California is now meeting the 1997 ozone air quality standards based on recent data from 2023-2025. This means some pollution rules will be paused as long as the air stays clean. People and businesses in Sacramento should know this change could ease certain regulations, with public comments open until October 14, 2026.
Analyzed Economic Effects
3 provisions identified: 1 benefits, 2 costs, 0 mixed.
Planning Requirements Suspended While Area Attains
The EPA is proposing a Clean Data Determination (CDD) for the Sacramento Metro area based on quality-assured monitoring data from 2023 through 2025 showing attainment of the 1997 8-hour ozone standard (design value ≤ 0.08 ppm). If finalized, the CDD would suspend planning requirements such as an attainment demonstration, RACM analysis, an RFP plan, contingency measures, and other attainment-related SIP planning requirements for as long as the area continues to attain the standard.
Permits, Inventories, and Fee Rules Stay in Effect
Even if the CDD is finalized, the EPA says it would not suspend requirements for emissions inventories, nonattainment New Source Review (NSR) permitting, or CAA section 185 fee programs. Those obligations remain in effect for the Sacramento Metro area, and EPA will work with remaining districts to ensure any outstanding section 185 fee rule requirements are met.
CDD Is Not a Redesignation to Attainment
The EPA proposes that a CDD would not redesignate the Sacramento Metro area to attainment. The area would remain designated nonattainment with a Severe-15 classification until the State submits and EPA approves a formal redesignation request and a maintenance plan showing the area will continue to attain the standard for 10 years.
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Key Dates
Department and Agencies
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