The Ohio Oil and Gas Land Management Commission picked the “highest and best” bidders to lease parts of a state park and two wildlife areas for fracking Monday.

Ohio environmentalists are urging a judge to halt a state commission preparing to award leases to oil and gas companies who want to frack beneath state parks and other public land. The Ohio Oil and Gas Land Management Commission is set to meet Monday to consider bids for several parcels of land. Once the commission settles on the “highest and best” bidder, state law requires the Ohio Department of Natural Resources to lease them the parcel.

Environmental groups filed an appeal Thursday, challenging recent decisions by an Ohio regulatory commission to allow drilling under a state park and two state wildlife areas.