CLARK COUNTY BOARD OF COMMISSIONERS
AGENDA ITEM
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Petitioner: |
Marci Henson, Director, Department of Environment and Sustainability |
Recommendation:
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Introduce an ordinance to amend Clark County Air Quality Regulations Section 14, "New Source Performance Standards" (NSPS), to incorporate by reference an NSPS for combustion engines into the Nevada State Implementation Plan; amend Section 107, "VOC Emissions Control for Cutback Asphalt Manufacturing and Use," to modify the title, to correct and clarify language, citations, and definitions, to expand a prohibition, and to renumber as necessary; and providing for other matters properly related thereto; and set a public hearing. (For possible action)
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FISCAL IMPACT:
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BACKGROUND:
On September 17, 2024, the Board amended Clark County Air Quality Regulation (AQR) 14 to authorize the incorporation by reference of certain requirements of 40 CFR Part 60 into the Nevada State Implementation Plan (SIP) via the adoption of AQR 14.2. This ordinance adds another NSPS (Subpart IIII of 40 CFR Part 60) to AQR 14.2 for incorporation by reference into the SIP to align it with AQR 121, which includes Subpart IIII requirements.
On March 19, 2024, the Board approved the adoption of AQR 107. This ordinance modifies the title and updates citations. It creates a new subsection, “Prohibitions,” by extracting a subsection of AQR 107.4 and expanding it to cover the manufacturing of rapid-curing cutback asphalt for sale outside Clark County. Since “rapid-curing” is a type of cutback asphalt, its definition was moved into the one for "cutback asphalt" and the "medium-curing" and "slow-curing" types were added. Lastly, the ordinance corrects unit conversions in the emissions standards section.
Upon Board approval, staff will submit AQRs 14 and 107 for inclusion into the SIP to satisfy federal obligations to reduce volatile organic compounds in a moderate nonattainment area for ozone. The attached technical support document provides context and explains the proposed changes to AQR 14 and 107.
Staff recommends that a public hearing be set for February 4, 2025, at 10:00 a.m.