All prior five-year drilling plans — dating back to 1980 — reference National Environmental Policy Act analyses.

Crews have identified the source of a leak in the Olympic Pipeline, which has been shut down for more than a week.

Some 4,000 gallons of gasoline spilled into Hill Ditch, a salmon-bearing stream and part of the Skagit River watershed.

Oil company BP has found the source of a leak in a major Pacific Northwest pipeline system. It restarted the flow of jet fuel ...