(October 22, 2015, 10:56 AM EDT) -- CHARLOTTE, N.C. — The federal judge in North Carolina presiding over a lawsuit brought by an environmental group that contends that Duke Energy Carolinas LLC is liable for contamination of groundwater in connection with its operation of a steam power station on Oct. 20 denied the company’s motion to dismiss the case on grounds the environmental groups have standing to bring the lawsuit (Yadkin Riverkeeper, et al. v. Duke Energy Carolinas LLC, No. 14-00753, M.D. N.C.)....