California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from diesel-powered trains and big rigs.

Withdrawal of request for EPA waiver means the state no longer seeks to enforce its zero emission vehicle mandate on fleets.

In order for California to promulgate vehicle emission standards without violating the Clean Air Act, it must receive a waiver from the EPA for any state law that regulates vehicles covered by the Act.

The California Air Resources Board (CARB) has scrapped its controversial rule that would have required the use of zero-emissions locomotives in the state

To help offset the added costs of not burning, the California Legislature appropriated $180 million to CARB for the San Joaquin Valley Air Quality Control District grant program for farmers using alternative methods, including chipping and shredding and a low-smoke burning system called an air curtain burner.

The withdrawal was among several pollution-fighting waiver requests filed with the Environmental Protection Agency that was dropped by the California Air Resources Board (CARB), according to ...

California’s efforts to limit pollution from diesel-powered trains and big rigs were stalled in anticipation of pushback from the incoming Trump administration. The California Air Resources Board said Tuesday it withdrew its requests for federal approval to implement stricter emissions rules for locomotives and

The California Air Resources Board said Tuesday it withdrew its requests for federal approval to implement stricter emissions rules for locomotives and semi-trucks because the U.S. Environmental ...

California abandons clean truck, locomotive rules after Biden's EPA doesn't grant waivers needed to depart from federal rules.

Unlike typical wildfires, smoke from the L.A. fires — consisting of toxic materials from burned down homes, cars, and more — poses additional risks to public health.

While we are disappointed that U.S. EPA was unable to act on all the requests in time," a state official said.