Amid growing concern over California’s program of underground injection of wastewater from oil production, a special oversight hearing by the State Senate on Tuesday criticized regulatory agencies for their lack of supervision and poor management practices. The joint hearing of the Senate Environment Committee and the Natural Resources and Water Committee took testimony from agency heads and the public. Recent scientific research and the investigations by the U.S. Environmental Protection Agency have revealed shortcomings of the state’s underground injection control program. Wastewater from oil and gas production is laced with a chemical stew of toxic chemicals. At potential risk are underground aquifers that provide water for public consumption and agriculture. Pacifica’s Vic Bedoian reports from Fresno.