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Air District finds AB 617 retrofit standard met after California Resources Corp. upgrades one engine

Sacramento Metropolitan Air Quality Management District · January 23, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

The Sacramento Metropolitan Air Quality Management District voted to accept staff’s AB 617 best-available retrofit control technology (BART) determination for internal combustion engines, concluding no additional rulemaking is needed after a voluntary CRC engine upgrade reduced NOx by over 80%.

The Sacramento Metropolitan Air Quality Management District on Jan. 22 accepted a staff determination under Assembly Bill 617 that existing internal combustion (IC) engines in the Sacramento Basin meet the district’s proposed retrofit emission limits after a voluntary equipment upgrade at California Resources Corporation.

Diana Colazo, a district rural development staffer, told the board staff had reviewed local, state and federal standards and compared peer-district limits, concluding that a best-available retrofit control technology (BART) limit of 0.15 grams per brake…

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