Greenwire: Environmental interests were trounced in the 2009 Supreme Court term that ends Monday. In five high-profile cases, the justices overturned decisions that favored environmentalists. They ruled in favor of the Navy in a case pitting national security concerns against the welfare of marine mammals; limited the scope of liability for a Superfund cleanup; and reversed a decision that held no cost-benefit test could be used to determine the best technology for withdrawing water from rivers …