The state Department of Environmental Protection said Monday that Chesapeake also agreed to clean up the waterways by Sept. 30. It says the slide filled more than a quarter-mile of streams below the well pad and damaged seven unnamed tributaries of Harts Run.
It says much of the work has been completed at the site, although Chesapeake must still remove sediment and stabilize the banks of the headwater tributaries to Harts Run.
Oklahoma City-based Chesapeake says it is pleased to resolve the matter.
The well site in question was in Greene County and is now controlled by Canonsburg, Pennsylvania-based Rice Energy.