Despite claims by the Helena city manager Monday that a mining spill resulted in "significant" contamination of Tenmile Creek, the Environmental Protection Agency on-site coordinator said based on early observations, the spill does not pose environmental impacts. EPA on-site coordinator Duc Nguyen said in a phone interview Tuesday less than 100 gallons of water mixed with mining sediment was released into Tenmile Creek from the Susie Mine, part of the Upper Tenmile Creek Mining Area. Nguyen said crew members have taken samples of the spill upstream, downstream and within the "pool of sediment...