California Code, Public Resources Code - PRC § 3320.4

(1) In excess of that share of such costs which would otherwise be borne by such person pursuant to subdivision (e) of Section 3322 as a participant in a unit created by order of the supervisor pursuant to Section 3322 under arrangements for conditional repayment as above provided, or

(2) In excess of that share of such costs which would otherwise be borne by such person as a participant in a unit under a unit agreement voluntarily entered into under arrangements for conditional repayment satisfactory to such person and the other working interest owners interested in said unit.