Our Salt Lake City Refinery began operations in 1908 and is now the largest in Utah with a total crude-oil capacity of 63,000 barrels per day (bpd).

The refinery processes crude oil from Utah, Colorado, Wyoming and Canada to manufacture gasoline, diesel fuel, jet fuel, heavy fuel oils and liquefied petroleum gas. These products are distributed through a system of terminals and pipelines, primarily to markets in Utah, Idaho and eastern Washington, with some product delivered to Nevada and Wyoming. The refinery also supplies jet fuel to the Salt Lake City International Airport.

The refinery supplies Andeavor’s network of Tesoro®, Shell®,  and USA Gasoline™ stations mostly in Utah, Idaho and Nevada.


  • Expansion project completed in 2015 retooled the refinery to process more Utah waxy crude which has less sulfur resulting in lower refinery emissions and higher quality lower sulfur fuel.
  • Reduced emissions by installing ultra-low NOx burners.
  • Started new project to produce lower sulfur Tier 3 gasoline that will be completed in 2019.
  • Tail Gas Treating project completed in 2015 reduced SO2 emissions.
  • Wet Gas Scrubber completed in 2017 has reduced both SO2 and NOx emmissions by 98 percent and 60 percent, respectively.

Health and Safety

  • Received a 2016 Award for Meritorious Safety Performance from AFPM.
  • Received a 2016 Award of Merit from the Utah Safety Council.
  • Employees participate in behavior-based safety program (STEPP).

Community Support

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See More About Our Community Investments in the Region

Tier 3 Gasoline Project

Vehicles account for roughly half of the emissions that contribute to air quality challenges along the Wasatch Front. We’re expanding the hydrotreater at our Salt Lake City Refinery to remove more sulfur from the gasoline we produce locally and meet new EPA standards surrounding Tier 3 Gasoline. Tier 3 gasoline enables a car’s catalytic converter to run better, reducing volatile organic compounds (VOCs) and nitrogen oxides (NOx) emissions on all vehicles that use it. On vehicles with newer emissions control equipment, the emissions reduction is even greater, up to 81 percent. Making this significant investment in Utah will improve air quality in the region, and we believe it’s the right thing to do – for Andeavor and the State.



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Wet-Gas Scrubber Project

Commuters and nearby residents will notice a billowy white water vapor from a new stack inside our Salt Lake City Refinery. This prominent new feature is called a wet-gas scrubber and it will remove particulate matter, sulfur dioxide (SO2) and nitrogen oxide (NOx) from the refinery’s emissions. A wet-gas scrubber uses a water mist spray to capture sulfur and dust particles, which then stay in the refinery’s system for further treatment and recovery. The cloud leaving the stack is heated water in the form of vapor – steam. We’ve produced this short video to help explain the process and why it’s an important addition to us and Salt Lake City.