We regulate water, hazardous waste, and cleanup activities at the Tesoro Refining & Marketing Company in Anacortes.
The refinery began operating in 1955. Owned by Marathon and doing business as Tesoro, it processes crude oil into a variety of petroleum products and has about 330 employees and 280 contractors that work on the site.
- At full production, the refinery has the ability to process 120,000 barrels of crude oil each day.
- Wastewater from the petroleum-making process is treated and sent to Fidalgo Bay.
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.
Facility phone: 360-428-1617 or 800-622-4627
Location: West March Point Road, Anacortes, Wash.