California Code, Public Resources Code - PRC § 3238

(a) For oil and gas produced in this state from a well that qualifies under Section 3251 or that has been inactive for a period of at least the preceding five consecutive years, the rate of the charges imposed pursuant to Sections 3402 and 3403 shall be reduced to zero for a period of 10 years. The supervisor or district deputy shall not permit an operator to undertake any work on wells qualifying under Section 3251 unless the mineral rights owner consents, in writing, to the work plan.

(b) An operator who undertakes any work on a well qualifying under Section 3251 shall have up to 90 days from the date the operator receives written consent from the supervisor to evaluate the well. On or before the 90 day evaluation period ends, the operator shall file with the supervisor a bond or security in an amount specified in Section 3204, 3205, or 3205.1, in accordance with the requirements of whichever of those sections is applicable to the well, if the well operations are to continue for a period in excess of the 90-day evaluation period. The conditions of the bond shall be the same as the conditions stated in Section 3204.

(c) A party may plug and abandon a well that qualifies under Section 3251 by obtaining all necessary rights to the well. That party shall be subject to the requirements of this chapter as an operator of the well, file with the supervisor the appropriate bond or security in an amount specified in Section 3204, 3205, or 3205.1, and complete the abandonment. If the abandonment is not completed, the supervisor may act under Section 3226 to complete the work.