Walter B. Parker Act, which was signed into law in 1980 by U.S. President Jimmy Carter. On March 24, 1989, the Exxon Valdez oil tanker struck Bligh Reef in Prince William Sound, spilling an estimated 260,000 to 750,000 barrels of crude oil. The Exxon Valdez oil spill was a major environmental disaster for the state. Governor Steve Cowper, who held office at the time of the spill, appointed Walter Parker as the chairman of the Alaska Oil Spill Commission in 1989. The Alaska Oil Spill Commission was created by the Alaska state government to investigate the causes of the Exxon Valdez oil spill.
Exxon Valdez or 257,000 to 750,000 barrels. In 1989, the "Exxon Valdez" oil spill was listed as the 54th largest spill in history. The tanker was 301 meters long, 51 meters wide, 26 meters depth (987 ft x 166 ft x 88 ft), with a deadweight of 214,861 long tons and a full-load displacement of 240,291 long tons. The ship was able to transport up to 235,000 m³ (1.48 million barrels) at a sustained speed of 16.25 knots, powered by a (31,650 shp) diesel engine. Her hull design was of the single-hull type, constructed by National Steel and Shipbuilding Company in San