A Washington state hearings board has ordered Clark County, Wash. to tighten its stormwater runoff standards.
The Washington Pollution Control Board's ruling Monday upends an agreement that the Washington state Department of Ecology had entered with the county. That allowed the county to compensate for stormwater pollution from new development using off-site projects rather than restricting development.
The Oregonian reports the board ruled the county stormwater plan doesn't protect water quality to federal or state standards.
Groups in Washington and Oregon had appealed in February.