Update on Rule 11-18: Phase 1 Underway

Jan 29, 2020 | Air Quality

The Bay Area Air Quality Management District (BAAQMD) has a number of programs that support the goals and intent of AB 617. These programs include Regulation 11, Rule 18: Reduction of Risk from Air Toxic Emissions at Existing Facilities (Rule 11-18), which was adopted late in 2017. The regulation’s purpose is to reduce emissions of TACs.

To date, the BAAQMD has sent out letters to 43 “Phase 1” facilities requesting validation of emissions sources and toxics emissions inventory data. These facilities are allowed up to 120 days for correcting and resubmitting toxics emissions inventory data.

On January 1, 2020, the Rule 11-18 risk action levels decreased from 25 per million to 10 per million. Facilities with HRA results greater than 10 per million will eventually be required to submit Risk Reduction Plans (see the Rule 11-18 implementation plan). On the California Air Resources Board (CARB) AB 617 potential reporting list, the BAAQMD has included 206 “high priority” facilities identified based on toxics emissions.

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