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Senate advances diesel-emissions inspection bill after industry amendments
Summary
Senate amended and advanced substitute Senate Bill 193 to the third-reading calendar, authorizing county diesel inspection programs to help meet federal PM10 air-quality requirements. Sponsors said diesel contributes roughly 12% of PM10 in Utah County; opponents pressed for clearer enforcement mechanisms and industry input.
The Utah Senate on the floor amended and advanced substitute Senate Bill 193 on diesel-emissions inspection and maintenance, moving the measure to the third-reading calendar after a lengthy debate about enforcement and scope.
Senator Stephen J. Reese, chairman of the Health Committee, told colleagues the bill would give county air-conservation authorities "the authority to implement and enforce" diesel inspection programs if needed to meet federal PM10 standards. "Emissions from diesel engines have been shown to contribute about 12% of the total PM10 emissions in Utah County," Reese said, arguing the measure is an additional tool for counties preparing a state implementation plan.
The bill’s original text included a requirement to present an emissions-certificate at registration or renewal. Industry representatives and several senators said that linkage would be difficult to enforce because diesel fleets can register in multiple states. Senator Reese described an industry-proposed enforcement alternative and offered amendments that the Senate adopted, replacing the registration linkage with county-level regulatory mechanisms and implementation authority.
Opponents pressed for more concrete enforcement details and for protections for agriculture and interstate carriers. Senator Stewart asked how agricultural diesel engines and off‑county-registered vehicles would be treated; Reese said agricultural exemptions remain and that counties would hold public hearings before adopting specific enforcement rules. Senator Bell called the measure "without teeth" unless counties tie the program to registration or another enforceable mechanism.
After amendments and floor discussion, the Senate recorded a roll-call on the amended substitute and placed SB193 on the third-reading calendar (roll-call result recorded on the floor: 15 yeas, 9 nays, 5 absent). The bill’s sponsors said the county-level approach is intended to allow local tailoring of enforcement while preserving a tool to avoid federal imposition of a federal plan by the EPA if the state fails to meet PM10 deadlines.
Next steps: SB193 was advanced for third reading, where final passage would be decided in a subsequent Senate session.
