However, most of the settlement monies, about $486 million, can only be used to perform EPA-selected cleanup actions in mining-contaminated areas of the Coeur dâAlene Basin, outside of the Bunker Hill Box.ut of a global bankruptcy settlement totaling $1.7 billion for environmental cleanups at contaminated sites across the country, about $494 million will go toward Superfund cleanup in the Bunker Hill Superfund site.