File #: 25-1870   
Status: Agenda Ready
File created: 1/22/2025 In control: Clark County Board of Commissioners
On agenda: 2/4/2025 Final action:
Title: Conduct a public hearing and approve, adopt, and authorize the Chair to sign an ordinance to adopt Clark County Air Quality Regulation Section 121, "Reasonably Available Control Technology Determinations for Specific Major Stationary Sources in the 2015 8-Hour Ozone NAAQS Moderate Nonattainment Area HA 212," to codify the reasonably available control technology determinations for certain major stationary sources that may cause or contribute to emissions of nitrogen oxides or volatile organic compounds within the ozone moderate nonat-tainment boundary; and providing for other matters properly related thereto; and authorize the Control Officer to compile and submit the adopted ordinance and all related documentation, including the Technical Support Document, to the Nevada Division of Environmental Protection for U.S. Environmental Protection Agency approval into the Nevada State Implementation Plan. (For possible action)
Attachments: 1. Staff Report, 2. Bill 1-21-25-3, 3. 121_20250204_TSD.pdf

CLARK COUNTY BOARD OF COMMISSIONERS

AGENDA ITEM

 

Petitioner:

Marci Henson, Director, Department of Environment and Sustainability

Recommendation: 

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Conduct a public hearing and approve, adopt, and authorize the Chair to sign an ordinance to adopt Clark County Air Quality Regulation Section 121, "Reasonably Available Control Technology Determinations for Specific Major Stationary Sources in the 2015 8-Hour Ozone NAAQS Moderate Nonattainment Area HA 212," to codify the reasonably available control technology determinations for certain major stationary sources that may cause or contribute to emissions of nitrogen oxides or volatile organic compounds within the ozone moderate nonat-tainment boundary; and providing for other matters properly related thereto; and authorize the Control Officer to compile and submit the adopted ordinance and all related documentation, including the Technical Support Document, to the Nevada Division of Environmental Protection for U.S. Environmental Protection Agency approval into the Nevada State Implementation Plan. (For possible action)

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FISCAL IMPACT:

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Additional Comments:

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BACKGROUND: 

Sections 182(b)(2), (c), and (f) of the federal Clean Air Act (the Act) require ozone nonattainment areas to implement reasonably available control technology (RACT) emission standards for major stationary sources of ozone precursors, nitrogen oxides (NOx) and volatile organic compounds (VOCs). The 2015 Ozone National Ambient Air Quality Standards Implementation Rule requires air pollution control agencies to submit a state implementation plan (SIP) revision that meets the Act’s NOx and VOC RACT requirements for any nonattainment area classified as “moderate” or higher (40 CFR Part 51.1312(a)).

On August 1, 2022, the Department of Environment and Sustainability, Division of Air Quality (DAQ) asked eight existing major stationary sources located in Hydrographic Area 212 to submit evaluations to establish major source RACT for their operations. DAQ reviewed the case-by-case evaluations and issued a determination for each. Clark County Air Quality Regulation (AQR) 121 will codify the determinations that require the major stationary sources to implement specific emissions standards for affected emissions units and includes testing, monitoring, recordkeeping, and reporting requirements. Upon Board approval, staff will submit AQR 121 for inclusion into the Nevada SIP to satisfy federal obligations to reduce NOx and VOC emissions in an ozone moderate nonattainment area. The attached technical support document provides context and explains the reasons for AQR 121.