California Code, Health and Safety Code - HSC § 25299.55

(a) A provision requiring the claimant to make a sworn verification of the claim to the best of the claimant's knowledge.

(b) A full description, supported by appropriate evidence from government agencies, of the unauthorized release of petroleum into the environment from an underground storage tank claimed to be the subject of the third-party judgment specified in Section 25299.58 or the corrective action performed pursuant to Section 25296.10.

(c) Certification by the claimant of all costs that have been, or will be, incurred in undertaking corrective action after January 1, 1988.