BILLINGS, Mont. (AP) — Conservation groups have filed an appeal challenging an agreement between the state and PPL Montana that requires the company to more closely monitor wastewater leaking from the company’s Colstrip power plant.

The Aug. 3 agreement between PPL and the Department of Environmental Quality set new guidelines to investigate and clean up the seeping wastewater. However, no fines were levied, and the agreement contains few deadlines for action.