Cal. Pub. Res. Code § 2773.15

Notwithstanding Section 2773.1, a surety bond that was executed by any personal surety that was approved by the lead agency prior to February 13, 1998, to ensure that reclamation is performed in accordance with a reclamation plan approved by a lead agency prior to that date, may be utilized to satisfy the requirements of this chapter, if the amount of the financial assurance required to perform the approved reclamation plan, as amended or updated from time to time, does not change from the amount approved prior to February 13, 1998.