Cal. Pub. Res. Code § 43601

(a) The evidence of financial ability shall be sufficient to meet the closure and postclosure maintenance costs when needed.
(b) The owner or operator of a solid waste landfill shall provide evidence of financial ability through the use of any of the mechanisms set forth in Part 258 (commencing with Section 258.1) of Title 40 of the Code of Federal Regulations or through the use of any other mechanisms approved by the department. However, the department may adopt regulations that reasonably condition the use of one or more of those mechanisms to ensure adequate protection of public health and safety and the environment, but shall not exclude the use of any mechanism permitted under federal law. In addition, the evidence of financial ability submitted pursuant to Section 43600 shall provide that funds shall be available to the regional water boards upon the issuance of any order under Chapter 5 (commencing with Section 13300) of Division 7 of the Water Code to implement closure and postclosure activities.
(c) The state water board or the appropriate regional water board shall have access to the financial assurance funds for closure and postclosure activities, and to financial assurance funds for corrective action, as necessary, to address water quality problems, if the owner or operator of the solid waste landfill has failed to implement the required closure and postclosure activities or corrective action activities.
(d) The owner or operator may request disbursement for expenditures to conduct closure, postclosure maintenance, or corrective actions from the financial assurance mechanism established for that activity. Requests for disbursement shall be granted by the department only if sufficient funds are remaining in the financial assurance mechanism to cover the remaining approved total costs of closure, postclosure maintenance, or corrective actions, as appropriate.
(e) If the evidence of financial ability for closure, postclosure, or corrective action is demonstrated by use of insurance, the department may approve the insurance mechanism if it is in compliance with either paragraph (1) or (2) as follows:
1. (1) The issuer of the insurance policy is either:
  1. (A) Licensed by the Department of Insurance to transact the business of insurance in the State of California as an admitted carrier.
  2. (B) Eligible to provide insurance as an excess and surplus lines insurer in California through a surplus lines broker currently licensed under the regulations of the Department of Insurance and upon the terms and conditions prescribed by the Department of Insurance.
2. (2) If the insurance carrier is established by a solid waste facility operator to meet the financial assurance obligations of that operator, insurance may be approved by the department that meets all of the following requirements:
  1. (A) The insurance mechanism is in full compliance with the requirements for insurance that are specified in subdivision (d) of Section 258.74 of Title 40 of the Code of Federal Regulations.
  2. (B) The insurance carrier is an insurer domiciled in the United States and licensed in its state of domicile to write that insurance.
  3. (C) The insurance carrier only provides financial assurance to the operator that has established the insurance carrier as a form of self-insurance and does not engage in the business of marketing, brokering, or providing insurance coverage to other parties.
  4. (D) The insurance carrier shall maintain a rating of A- or better by A.M. Best, or other equivalent rating by any other agency acceptable to the department.
  5. (E) If requested by the department, an independent financial audit report evaluating the assets and liabilities of the insurance carrier and confirming compliance with the statutory and regulatory requirements of the state of domicile and an independent actuarial opinion on the independence and financial soundness of the insurance carrier by an actuary in good standing with the Casualty Actuarial Society or the American Academy of Actuaries regarding the adequacy of the loss reserves maintained by the insurance carrier shall be submitted to the department upon application and annually thereafter.
(f) A solid waste facility operator using or proposing to use an insurance company to demonstrate financial assurance may be required by the department to pay a fee for the actual and necessary cost of reviewing information submitted by the operator pursuant to paragraph (2) of subdivision (e) up to an amount not to exceed ten thousand dollars ($10,000), unless a higher amount is mutually agreed to by the operator and the department.
(g) The funds collected pursuant to subdivision (f) shall be deposited in the Integrated Waste Management Account and shall be available, upon appropriation by the Legislature, for expenditure by the department to fund the review specified in subdivision (f).
(h) This section shall become operative on January 1, 2018.