Wildlife officials say it's too soon to know the impact of a large waste spill in western Wisconsin.
A malfunctioning pump at a Jackson County frac sand mine in the town of Curran let some 400-thousand gallons of mine waste into a tributary of the Trempealeau River on August 2nd and 3rd. The waste is left over after the sand is washed. Wisconsin Department of Natural Resources officials say they don't know what the impact of the spill will be on the river until they get back test results. Those results will tell them the type of materials in the waste, and are expected to be completed in a few weeks.