By: Leia Larsen
Published February 24, 2017
A proposed law could make Weber County’s new diesel emissions testing rule mandatory in all of Utah’s non-attainment counties.
The Utah House of Representatives voted 39-29 in favor of HB134 Friday. The bill would require diesel vehicles under 14,000 pounds and model years newer than 1997 to have, at a minimum, an emissions test through the on-board diagnostic system and a visual inspection for tampering.
The rule would only apply to Utah’s five non-attainment counties, which do not meet National Ambient Air Quality Standards for PM 2.5 pollution. It also exempts farm vehicles.
In January, Weber County joined three of its fellow non-attainment counties — Cache, Davis and Salt Lake — in implementing diesel emissions testing requirements, which hold the vehicles to a similar standard as gas-powered ones.
Utah County is now the only non-attainment county that does not test diesel emissions. The county formerly had a diesel program, but its commissioners repealed the testing requirements in 2006.
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