Monday's lawsuit comes months after state Sen. Fran Pavley (D-Agoura Hills) introduced a bill requiring require all "urban wells" to have safety shut-off valves at gas storage wells. The proposed legislation is still in committee, Pavley's office said Monday. Additionally, the state's Department of Conservation (DOC) earlier this month released updated draft regulations for natural gas storage wells in response to the leak. Included in the recommendations are the installation of sub-surface safety valves. • RELATED : State senator aims to prevent another Porter Ranch gas leak Supervisor Antonovich expressed frustration with the utility Monday, accusing SoCalGas of failing to reimburse residents who were impacted by the leak. He said the lawsuit is part of a push to ensure that SoCalGas protects its county gas pipes. "They have a responsibility to make sure that they're going to be safe," Antonovich said.