The Delta tunnels got a crucial green light from two federal agencies Monday when scientists said the controversial project can co-exist with the endangered fish that inhabit the waters of the Sacramento-San Joaquin Delta. In a pair of long-awaited decisions, the U.S. Fish & Wildlife Service and the National Marine Fisheries Service said the tunnels, known as California WaterFix, aren’t likely to jeopardize the continued existence of the Delta smelt, Chinook salmon, steelhead and other imperiled species.