(Brian Maffly | The Salt Lake Tribune) Colorado business Aaron Million, pictured Wednesday at the Utah Department of Natural Resources, is proposing to divert 55,000 acre-feet of water from the Green River in Utah to Colorado's Front Range. The state of Utah, various federal agencies, water districts in both Utah and Colorado and environmental groups are asking the Utah State Engineer to reject Million's water-right application, arguing his plan to pipe water out of the Colorado River basin is a speculative scheme that would deplete an already over-allocated river system to the detriment of both the environment and water users.