State regulators have described emissions-testing in Cache County as the only pollution control that the U.S. Environmental Protection Agency is ready to sign off on as part of a comprehensive plan for reducing PM 2.5 spikes in northern Utah. And they signaled Wednesday that they're still skeptical that the EPA would approve the Cache plan because it would be hard to enforce it and to prove it works.
"EPA has never approved a program like this," said Joe Thomas of the Utah Division of Air Quality.
Although a team of air-quality scientists and regulation experts have been working on the comprehensive plan for three years, the plan to cut PM 2.5 pollution episodes still falls short of required reductions. The team has looked at smokestack industrial plants, homes and small businesses and cars and trucks, but plans for the Wasatch Front counties fall short of making the required emissions cuts by the EPA's 2014 deadline or even with an extension to 2019.
And, in the Cache Valley, emissions testing is considered a crucial tool to cut key pollutants.
The Cache County alternative would require anyone who drives on yellow or red air-quality days to display a sticker on the rear window that certifies the vehicle's emissions are low enough. Otherwise, they face a warning on the first violation or fines for subsequent ones.
Peterson provided a point-by-point rebuttal of EPA's concerns about the county's alternative program. The county attorney has written a legal opinion that says the state has no authority to force emissions testing.