The brighter paint on a stories-high pollution control unit added to Jim Bridger in 2015 stands out from the weathered steel of the original plant. (Angus M. Thuermer, Jr./WyoFile)

The U.S. Environmental Protection Agency announced Wednesday it will deny Wyoming’s proposed changes to a long-standing regional haze plan that requires major pollution control upgrades at the Jim Bridger coal-burning power plant in Sweetwater County.

The decision may result in the closure of Jim Bridger unit 2 as early as late February and unit 1 by year’s end. There are four coal burning units at PacifiCorp’s Jim Bridger plant, which employs about 700 people.

The Bridger surface mine, which supplies coal to Jim Bridger, employs about 187 workers.

“If finalized, EPA’s proposed action to disapprove the state’s revised plan will require PacifiCorp to adhere to the requirements of the existing regional haze plan, which has been in place since 2014, absent an approvable plan revision from the state,” EPA said in a press statement.

“PacifiCorp will continue to work with the EPA and the state of Wyoming in seeking a resolution that would avoid an early shutdown while maintaining compliance with regulatory requirements,” PacifiCorp spokesperson Tiffany Erickson said.

The 2014 plan required PacifiCorp to install “selective catalytic reduction” controls at Jim Bridger unit 1 by the end of 2022 and at unit 2 by the end of 2021. Instead, the Berkshire Hathaway owned utility giant that operates as Rocky Mountain Power in Wyoming, joined the state in drafting an alternative plan that would allegedly meet the same regional haze emission parameters by operating the two units at lower capacities.

But EPA said the proposed revision is flawed, and it will instead enforce the existing regional haze plan.

Workers collect parts and equipment for a job on a coal grinder at the Jim Bridger Plant in September 2019. The plant and associated mines employ about 887 people. (Angus M. Thuermer, Jr./WyoFile)

“EPA has found that Wyoming’s revised regional haze plan fails to justify reversing the state’s 2011 determination that the installation of Selective Catalytic Reduction (SCR) pollution control systems at Jim Bridger Units 1 and 2 is necessary under the Clean Air Act to make reasonable progress toward natural visibility conditions in Class I Areas,” EPA stated Wednesday.

Gov. Mark Gordon filed an emergency suspension order on Dec. 27 attempting to block the EPA from forcing a shutdown at the power plant. 

“While not completely unexpected, EPA’s decision to disapprove the revised State Implementation Plan is a disappointing reflection of a federal agency acting in bad faith,” Gov. Mark Gordon said in a press statement Wednesday evening. “EPA’s backtracking and subsequent refusal to adopt an agreement previously approved by the regional office and EPA headquarters could impact the loyal workforce of the Jim Bridger Power Plant and coal mine.”

EPA is expected to file its decision to deny Wyoming’s proposed regional haze revision Jan. 18, which would initiate a 30-day public comment period. The federal agency could take enforcement action regarding Jim Bridger unit 2 immediately after it responds to public comments.

It’s unclear whether the EPA is cooperating with Gordon’s suspension order, which would block federal enforcement actions at Jim Bridger through the end of April.

— This story has been updated to include a comment from PacifiCorp. — Ed

Dustin Bleizeffer

Dustin Bleizeffer is a Report for America Corps member covering energy and climate at WyoFile. He has worked as a coal miner, an oilfield mechanic, and for 22 years as a statewide reporter and editor primarily...

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  1. Why worry about haze from coal burning? Wait til we have radioactive haze from our new liquid sodium reactor.

  2. Jim Bridger has huge mountains of fly ash and mine spoils spread out on mine property. Don’t let Berkshire/Hathaway (aka. Warren Buffet) do anything at the power plant ( like shut it down) before they clean and reclaim these lands. BS

  3. Wyofile is biased.

    Why is Wyoming conforming to anything from the FED?
    Wyoming doesn’t need or want anything from the FED.
    Wyoming is perfectly capable of taking care of itself.
    ⚖️🕊️⚖️🕊️⚖️🕊️⚖️🕊️⚖️

  4. This situation is similar to recent others involving petroleum pipelines where-in the corporate principals decided to ignore regulatory deadlines on the assumption that a 2nd term Trump administration would agree to heavily watered down revisions.

    You sleep with dogs, you wake up with fleas.

  5. You could go back to the EPA and work through your title V permit and look at using your steam equipment and switch gears and substation gear, and set a frame 7H gas turbine generator packages and have your SCR on the gas turbine getting NOX down to 1.5 ppm and the GE turbine can get NOx down to 2. Ppm without using water and each gas turbine can put out around 200 MWH and in CC 300 MWH and you can keep installing gas turbine to have anywhere from 1 on 1 to 4 on 1 gas turbine to steam turbine and your heat rate willbe twice as good as the coal fired plant, I assuming the coal plants is running 10.500 btu per/kw at best. This is the cleanest technology on the market today when it comes to fossil fuels and it work well with AGC load follow went your follow wind and solar power generation.