Aquifer mysteries hold key to effects of uranium mining | coloradoan.com | The Coloradoan - 0 views
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Energy Net on 08 Feb 10"The U.S. Environmental Protection Agency said Thursday a decision about whether Powertech USA will be permitted to conduct an aquifer pump test for its proposed Centennial Project uranium mine northeast of Fort Collins will be announced by mid-April. If approved, Powertech will be allowed to test the feasibility of in situ leach mining for uranium at the Centennial Project site. The test could help regulators find answers to questions about how the underlying aquifer works and how any contamination from the mine could move through it and affect groundwater elsewhere. Powertech's in situ leach mining method would pump a baking-soda-like fluid into the ground, which would loosen uranium from the underground rock formation, then pump the fluid back out of the ground, taking the uranium with it. The proposed pump test would allow Powertech to pump water out of the uranium-containing aquifer, store it and reinject it. The mining could have the greatest impact on the Laramie-Fox Hills aquifer, which many surrounding landowners have tapped for their well water. "