In its “tank upgrade alternatives” decision document from 2019, the Navy said it would at some point implement “double-wall equivalency secondary containment” — or remove fuel from Red ...

The Navy has estimated that the least expensive method of double-walling its fuel tanks that in 2014 spilled 27,000 gallons (102,000 liters) of fuel could cost between $500 million and $2 billion.

Amid ongoing fuel leaks between Red Hill and Pearl Harbor, the Navy said it is investing over $750 million in improvements to its aging fuel storage tanks that lie 100 feet above the Moanalua ...

They need to be upgraded to double wall containment -- tank within a tank -- much sooner or the fuel needs to get removed,” said Ernest Lau, manager and chief engineer of the Board of Water Supply.

Here's some of what those studies found: Hanford tank AY-102 contains 857,000 gallons of waste in the form of a brown sludge stewing from the heat of its own decay in a translucent yellow liquid ...