Matheson Tri-Gas, Anacortes

We regulate water and hazardous waste activities at the Matheson Tri-Gas hydrogen plant in Anacortes.

Facility information

This facility makes high purity hydrogen from steam and natural gas. It produces:

  • About 7,000 tons of hydrogen each year.
  • 26,800 tons of steam each year.

The Shell Puget Sound oil refinery uses these products in its processes. Matheson Tri-Gas sends its wastewater to the refinery for treatment. The refinery then sends the treated wastewater to Fidalgo Bay.

Permit information

The Northwest Clean Air Agency regulates the refinery’s air quality activities. Visit the Northwest Clean Air Agency website or call 800-622-4627 for more information.

Matheson Tri-Gas contacts

Location: 8579 South Texas Road, Anacortes, Wash.