A federal judge has dismissed cases brought by two counties in Utah and Florida alleging Volkswagen’s emissions fraud violated their state environmental laws.

U.S. District Judge Charles Breyer of the Northern District of California, who is overseeing the Volkswagen emissions litigation in San Francisco, found on Monday that environmental claims brought by Salt Lake County and Hillsborough County were pre-empted by the U.S. Clean Air Act. The ruling, which expanded on an Aug. 31 order from Breyer in a similar case brought by the state of Wyoming, could impact dozens of other environmental lawsuits in which at least eight states and 28 counties in Texas allege statutory damages in the billions of dollars.