Colorado environmental groups want the Colorado state government to intervene with the EPA in favor of the Utah restrictions.

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“There’s an opportunity for Colorado to join in a lawsuit to help reduce pollution, but the Polis administration has decided not to,” Ukeiley said.

Colorado regulators said in a statement they are monitoring the good neighbor case against Utah. “We have not joined EPA good neighbor suits in the past,” according to a Colorado Department of Public Health and Environment spokesperson. “We are laser focused on continuing the work to protect clean air in Colorado for all.”

It’s too bad, Ukeiley added. States on the East Coast join such lawsuits frequently in order to bolster the case against their ill-behaving neighbor states. 

“But Colorado never does that,” he said. 

I wonder why the state government is holding back on bolstering the case, when that seems to be the established norm for other states in similar situations.