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The South Coast Air Quality Management District (SCAQMD) held its fifth working group meeting on April 10, 2019 to discuss Proposed Rule (PR) 1480. PR 1480 Air Toxic Metals Monitoring, will require ambient air monitoring toxic metal emissions sources. PR 1480 would apply to facilities designated as a Potentially Significant Source (PSS) of toxic metal emissions. A facility would be designated a PSS if their cancer risk exceeds 100 in one million, and the framework used to develop PR 1480 includes these four activities:

  1. Data Collection - the SCAQMD will conduct site visits, review ambient monitoring results, and estimate health risks for facilities with toxic metal emissions.
  2. Notification - the SCAQMD will then notify facilities whose emissions would classify them as a PSS, and trigger the need for air toxic metals monitoring.
  3. Response - facilities will then have 30 days to respond to the SCAQMD's evaluation, and the opportunity to demonstrate they are not the source of the air toxic metals, or can request the SCAQMD provide additional evidence regarding their evaluation.
  4. Designation - if the facility is designated a PSS, then it would be subject to ambient air monitoring (PR 1480) and risk estimates/reduction efforts (Rule 1402). A PSS would be required to submit an air monitoring plan and fully implement it within 30-days of approval.

The SCAQMD is scheduled to have another working group meeting in May 2019 to discuss PR 1480, with the proposed rule currently scheduled for adoption during third quarter 2019. For more information regarding compliance with the proposed rule, please visit the District's website or contact our Irvine office at (949) 567-9880.