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Idaho’s two Class I areas, Craters of the Moon National Monument and Preserve and Yellowstone National Park. Craters of the Moon National Monument and Preserve protects a vast “weird and scenic landscape” with remarkable and diverse volcanic features, sagebrush steppe ecosystems, and wilderness, which provides opportunities to explore, understand, and value the rugged and remote high desert landscape of the Great Rift Region. Yellowstone National Park, the world’s first national park, was set aside in 1872 as a place to share the geothermal wonders and preserve and protect the scenery, wildlife, cultural heritage, and geologic and ecological systems and processes in their natural condition, for the benefit and enjoyment of present and future generations.

DEQ evaluated the following eight sources: (1) Clearwater Paper Corp, (2) Itafos Conda LLC, (3) J.R. Simplot ‐ Don Siding Pocatello, (4) Northwest Pipeline LLC‐Soda Springs, (5) P4 Production LLC, (6) TASCO‐Nampa, (7) TASCO‐Paul, and (8) TASCO‐Twin Falls for reasonable progress controls. Based on NPCA’s research, we know these sources contribute to visibility impairment not only Idaho’s Class I areas but also to Class I areas in neighboring states. We urge DEQ to revise its SIP to require emissions controls on these facilities to not only clear the air in our national parks and wilderness areas, but in our communities, including environmental justice communities.

Read the Issues Identified and the Conclusion here (PDF).

Exhibits: 1, 2, and 3 (PDF)