2020-28885: Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements; Western Nevada County, California
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The Environmental Protection Agency (EPA) is proposing to approve, or conditionally approve, all or portions of a state implementation plan (SIP) revision submitted by the State of California to meet Clean Air Act (CAA or "Act") requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS or "standards") in the Nevada County (Western part), California ozone nonattainment area ("Western Nevada County"). The SIP revision is the "Ozone Attainment Plan, Western Nevada County, State Implementation Plan for the 2008 Primary Federal 8-Hour Ozone Standard of .075 ppm" ("2018 Western Nevada County Ozone Plan" or "Plan"). The 2018 Western Nevada County Ozone Plan addresses the Serious nonattainment area requirements for the 2008 ozone NAAQS, including the requirements for emissions inventories, attainment demonstration, reasonable further progress, reasonably available control measures, and contingency measures, among others; and establishes motor vehicle emissions budgets. The EPA is proposing to approve the 2018 Western Nevada County Ozone Plan as meeting all the applicable ozone nonattainment area requirements except for the contingency measures requirement, for which the EPA is proposing conditional approval. In addition, the EPA is beginning the adequacy process for the 2020 motor vehicle emissions budgets in the 2018 Western Nevada County Ozone Plan through this proposed rulemaking.
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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