SALT LAKE CITY (AP) — A board of state regulators adopted a set of comprehensive plans Wednesday to cut chronic air pollution along the heavily populated urban corridor of northern Utah.

The plans won’t bring relief for years, however, and a group of Utah doctors and other clean-air advocates lambasted the Utah Air Quality Board for failing to move more aggressively. They also criticized the board for approving major expansions at Salt Lake oil refineries in the meantime.