Oklahoma’s oil and gas regulator released an expanded plan on Monday that will curtail wastewater injection volumes and well depth to deal with the state’s increasingly frequent earthquakes. The Oklahoma Corporation Commission’s new plan about doubles the amount of land covered under a previous plan released in February to help deal with the increase of seismic activity in the state that officials say is caused by oil and natural gas disposal wells. Quakes above magnitude 3.0 now strike the state at a rate of two per day or more, compared with two or so per year prior to 2009. The new plan affects more than 5,000 square miles (12,950 sq km) and more than 400 disposal wells, bringing the combined effect of the two plans to more than 10,000 square miles (28,900 sq km) and more than 600 disposal wells. The new plan […]