Cal. Pub. Res. Code § 3181
(a) The operator of a gas storage well shall submit for the supervisor’s approval the following materials:
(2) A risk management plan to identify and plan for mitigation of all threats and hazards and potential threats and hazards associated with gas storage well operation in order to ensure internal and external mechanical integrity of a well, including site-specific information. The risk management plan shall provide for regular review and revision, as needed, to ensure the plan appropriately reflects current conditions. The risk management plan shall include, but is not limited to, all of the following:
(A) A natural gas leak prevention and response program that addresses the full range of natural gas leaks possible at the facility with specific response plans that provide for immediate control of the leak. The operator shall consult with local emergency response entities on the response plans. The prevention and response program shall include, but is not limited to, all of the following:
(3) In addition to other factors deemed relevant by the supervisor, the risk management plan required in paragraph (2) shall consider all of the following: