2019-15797: Promulgation of State Implementation Plan Revisions; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Colorado and North Dakota
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On October 1, 2015, the Environmental Protection Agency (EPA) promulgated the 2015 ozone NAAQS, revising the standard to 0.070 parts per million. Whenever a new or revised National Ambient Air Quality Standard (NAAQS) is promulgated, the Clean Air Act (CAA or Act) requires each state to submit a State Implementation Plan (SIP) revision for the implementation, maintenance, and enforcement of the new standard. This submission is commonly referred to as an infrastructure SIP. In this action we are proposing to approve multiple elements and disapprove a single element of the following infrastructure SIP submissions with respect to infrastructure requirements for the 2015 ozone NAAQS: Colorado, submitted to the EPA on September 17, 2018; and North Dakota, submitted to the EPA on November 6, 2018. We are also proposing to approve a portion of North Dakota's May 2, 2019 submission of chapter 33.1-15-15, the air pollution control rules of the State of North Dakota, that updates the date of incorporation by reference (IBR) of Federal rules.
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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