SIDNEY, Neb. (AP) — Landowners whose property is adjacent to a planned oil production wastewater site in the Nebraska Panhandle have filed a court challenge to the site’s approval.

The petition for review was filed last week by Jane Grove and Hughson Flying A Ranch Inc. against the Nebraska Oil and Gas Conservation Commission and Terex Energy Corp., of Broomfield, Colorado. Last month the commission approved Terex’s request to use a well north of Mitchell to dispose of salty groundwater and chemical-laden fracking wastewater that result from oil and gas production.

The petition says the commission didn’t have jurisdiction because the well was intended to dispose of wastewater produced in Colorado and Wyoming and that there were no plans initially to dispose of wastewater produced in Nebraska.