Princes Cruise Lines has agreed to pay a $20,000 fine for dumping water from on-board swimming pools into Glacier Bay National Park and Preserve in 2011.
The Environmental Protection Agency has issued Royal Dutch Shell PLC notices of air quality violations for emissions involving its Arctic drilling operation in 2012.
The state of Alaska is suing owners of two Fairbanks outdoor wood boilers, claiming they're violating public nuisance laws.
The U.S. Environmental Protection Agency says it has no timetable for completing its review of the impacts of large-scale mining in the Bristol Bay region.
Cleanup at the Red Devil mine site is getting special attention from the state’s administration.
Interior Secretary Ken Salazar is planning a three-day trip to Alaska. Salazar is preparing to decide whether to issue final drilling permits to Shell Oil, which hopes to drill exploratory wells this summer in the Chukchi and Beaufort seas.
Environmental groups in five states are suing the federal government, claiming Environmental Protection Agency rules on chemical dispersants used in oil spills do not meet clean water requirements.
The federal government has reached agreement with one of Alaska's largest shipping companies, providing a conditional waiver for new fuel standards while Totem Ocean Trailer Express converts to cleaner-burning fuel.
Some Alaska communities are pushing back against a new requirement that ships sailing within 200 miles of the coast burn cleaner fuel. They say the rule, which goes into effect Wednesday, will hurt cruise traffic and increase shipping costs.
New federal air-pollution restrictions will affect cruise and some other vessels sailing Alaska waters.
But they will not impact state ferries.