Letter Jul 14, 2015

Best Available Retrofit Technology at the Cholla Power Plant

Comments on Cholla BART Reassessment (514 KB)

On behalf of National Parks Conservation Association and Sierra Club, Earthjustice respectfully submits the following comments regarding the Arizona Department of Environmental Quality’s (ADEQ) proposed Best Available Retrofit Technology (BART) “reassessment” for the Cholla Power Plant.

Cholla is one of the worst visibility-impairing coal plants in the nation, and the Conservation Organizations strongly support Arizona Public Service Company (APS) and PacifiCorp’s commitment to stop burning coal at Cholla. Unfortunately, compared to Cholla’s existing BART requirements, ADEQ’s proposal would result in greater air pollution and worse visibility impairment at Arizona’s national parks and wilderness areas for nearly two decades after the BART compliance deadline. The proposal thus weakens Cholla’s existing BART determination in violation of the Clean Air Act’s anti-backsliding provision. Fortunately, ADEQ’s analysis shows it would be cost effective to install updated pollution controls that would substantially reduce Cholla Unit 3 and 4’s pollution before they stop burning coal in 2025. At a minimum, Selective Non-Catalytic Reduction (SNCR) controls should be BART. Moreover, a proper analysis shows that highly-effective Selective Catalytic Reduction (SCR) controls are the “best available” controls and should be BART. Accordingly, in order to ensure the BART “reassessment” complies with the Act, ADEQ should revise its BART determination and require Units 3 and 4 to install these updated, cost-effective pollution controls by the BART compliance deadline.

Read more from NPCA

  • Blog Post

    June 8 Is World Ocean Day

    Jun 2023 | By Sarah Gaines Barmeyer

    NPCA is working to ensure coastal national parks are part of the climate solution. The more we protect national park waters from climate impacts now, the more they will protect…

  • Blog Post

    Civil War-Era Cemetery and Hospital Found Under Water

    Jun 2023 | By Karuna Eberl

    A small, long-submerged island is revealing Civil War mysteries in Dry Tortugas National Park. The National Park Service is conducting an in-depth survey to learn more. 

  • Press Release

    Victory: Biden Administration Protects Chaco Canyon Cultural Landscape

    Jun 2023

    "We are grateful for today’s action, which is the latest move by the Biden administration that prioritizes preserving, instead of industrializing, Indigenous lands," -- NPCA CEO Theresa Pierno