NEW: 35 years after Exxon Valdez
How has oil transportation changed in Prince William Sound since 1989?

The immediate cause of 1989 Exxon Valdez oil spill was a navigational error on the part of the tanker’s captain and crew. However, Congress found that complacency among the oil industry and the regulatory agencies responsible for monitoring the operation of the Valdez terminal and vessel traffic in Prince William Sound was also a contributing factor in the disaster.
Few prevention measures were in place and cleanup resources were inadequate.
Since 1989, regulatory agencies, the industry, and citizens have been working together on improved methods to prevent oil spills and how to be better prepared to clean up if another spill should occur.
Laws and Regulations
One of the most important results of the oil spill was the enactment of the federal Oil Pollution Act of 1990, or “OPA 90,” which addressed many deficiencies, including liability, compensation, and oversight. The law required two citizens’ oversight councils, one for Prince William Sound and one for Cook Inlet.
Both federal and state laws now require more comprehensive prevention measures and planning for larger spills and require more spill response equipment to be immediately available.

