The Alaska Chadux Network serves tank facilities and tank and nontank vessels operating in or transiting through the Western Alaska and Prince William Sound Captain of the Port zones and Interior Alaska, except for tank vessels operating in Prince William Sound or Cook Inlet.

These zones extend from the Alaska/Canada border in the Arctic, Western Alaska, the Aleutian Islands and western Alaskan Islands, Gulf of Alaska and Prince William Sound. These waters and land masses encompass the jurisdictional area covered by the U.S. Coast Guard Sector Anchorage/Captain of the Port Western Alaska and U.S. Coast Guard Marine Safety Unit Valdez/Captain of the Port Prince William Sound, excluding Cook Inlet; Alaska Department of Environmental Conservation; and the U.S. Environmental Protection Agency.