Ind. Code § 13-25-5-20
(b) A person who implements or completes an approved voluntary remediation work plan under this chapter is not liable for claims for contribution concerning matters addressed in:
(2) a certificate of completion issued to the person under section 16 of this chapter.
[Pre-1996 Recodification Citation: 13-7-8.9-20.]
As added by P.L.1-1996, SEC.15.