Earthquakes continue to rattle Oklahoma's Lincoln County.

The Oklahoma Corporation Commission has issued a directive to reduce the amount of oil and gas wastewater allowed to be disposed of within a 10-mile area of where a 4.0-magnitude earthquake was recorded Thursday in Carney. The directive applies to 23 disposal wells that inject into the Arbuckle Formation, which is Oklahoma's deepest formation. The volume reductions and shut-ins will be phased in over a four-week period to avoid a sudden change of pressure that they say theoretically could increase the risk of a seismic event.