One of two reactors at the Arkansas Nuclear One power plant has passed a preliminary environmental assessment toward obtaining a renewal of its operating license. The United States Nuclear Regulatory Commission says it has found no reason not to renew the license. Entergy Operations owns the power plant and applied in October 2003 to renew the license of its Unit 2 reactor. The original license was issued for up to 40 years; the reactor began operating in 1980. The current license expires July 17th, 2018, and a new license would add an additional 20 years of operation. The NRC says in a news release that its staff reached "the preliminary conclusion" that Unit 2 operations have no environmental effects that would preclude the company from seeking renewing of the operating license. The Unit 1 reactor is licensed to operate through 2034.