2018-08622: Approval and Promulgation of Air Quality Implementation Plans; Colorado; Regional Haze State Implementation Plan
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The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Colorado on May 26, 2017, addressing regional haze. The EPA is proposing to approve source-specific revisions to the nitrogen oxides (NO<INF>X</INF>) best available retrofit technology (BART) determination for Craig Station Unit 1. This unit is owned in part and operated by Tri-State Generation & Transmission Association, Inc. (Tri- State). We are also proposing to approve revisions to the NO<INF>X</INF> reasonable progress determination for Tri-State's Nucla Station. The EPA is taking this action pursuant to section 110 of the Clean Air Act (CAA).
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
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