BYRON, IL - FEBRUARY 17: Steam billows from the cooling towers at Exelon's nuclear power generating station February 17, 2006 in Byron, Illinois. Elevated levels of radioactive tritium have been found in water leaked from the facility as well as two other nuclear power generating facilities owned by Exelon in the state. Tritium has been linked to cancer and birth defects. Exelon operates nuclear power units at in Illinois, Pennsylvania and New Jersey. (Photo by Scott Olson/Getty Images)
Last week's temporary restraining order issued by State District Judge Jon Wisser sided with environmentalists.
Wisser planned a hearing Monday on the injunction against the Texas Low-Level Radioactive Waste Disposal Compact Commission.
The commission on Tuesday was scheduled to vote on rules to expand how much waste could be processed at a dump in remote Andrews County.
Environmentalists, who sought last Thursday's court ruling, have accused regulators and Dallas-based Waste Control Specialists of rushing through the dump expansion proposal during the holidays. A company spokesman denies the allegations.
The site currently accepts waste from Texas, Vermont and the federal government.