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  1. Home
  2. EPA in California
  3. Moss Landing Vistra Battery Fire
  4. Frequently Asked Questions

Moss Landing Air: What air monitoring/sampling is required during Vistra's battery removal work?

Return to: Frequently Asked Questions

EPA is requiring air monitoring and air sampling to protect nearby residents and workers during the battery removal process.

Vistra is required to implement air monitoring and air sampling during the demolition and battery handling activities. In the event of a fire, in addition to continuing to have a private firefighting company on-site 24/7, Vistra will implement an EPA-approved emergency response plan and EPA may direct Vistra to conduct additional air monitoring and air sampling.

Air monitoring is continuous, meaning it is in real time. It looks for:

  • PM2.5
  • PM10
  • Hydrogen fluoride

Air sampling is done each day and looks for:

  • Aluminum
  • Asbestos fibers
  • Cobalt
  • Copper
  • Manganese
  • Nickel

For more information about community safety, see our  EPA Factsheet: Keeping the Community Safe (pdf) (466.79 KB, January 2026) .

Related Questions

  • Moss Landing Air: What air monitoring activities did you do during the January 2025 fire response?
  • Moss Landing Air: Is there a difference between air monitoring and air sampling?
  • Moss Landing Air: How are air results evaluated?

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Last updated on April 14, 2026
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