CHEYENNE, (AP) - Wyoming's oil and gas supervisor says he's begun reviewing more than 50 written comments on proposed changes to the agency's rules and regulations for oil and gas development, including hydraulic fracturing. Thomas Doll says he plans to incorporate substantive comments before the rules go to the Wyoming Oil and Gas Conservation Commission next month.
Hydraulic fracturing, or fracking, involves pumping pressurized water, sand and chemicals underground to split rock and improve the flow of oil and gas. Environmental groups and the Powder River Basin Resource Council say the proposed rules are a good step but more should be done to protect groundwater. Industry officials say fracking hasn't been shown to contaminate groundwater.