When the person undertaking a voluntary action determines that the property meets applicable standards, the person may seek a no further action letter from a certified professional. A no further action letter may be issued for the property at any stage of the identification of potential hazardous substance or petroleum contamination or remedial activities after a phase I or II property assessment has demonstrated that there is no reason to believe that there has been a release of hazardous substances or petroleum at or upon the property, that information indicates that there has been a release of hazardous substances or petroleum at or upon the property, but that the release is not in excess of applicable standards, or that if there has been such a release in excess of applicable standards, those standards have been achieved through remedial activities or will be achieved in accordance with the timeframes established in an operation and maintenance agreement entered into under division (A)(3) of section 3746.12 of the Revised Code or in such an agreement and a consolidated standards permit issued under section 3746.15 of the Revised Code.
A covenant not to sue issued under section 3746.12 of the Revised Code to a person who violated division (B)(2)(a), (b), or (c) of this section with respect to the no further action letter upon which issuance of the covenant was based is void.
Except as otherwise provided in division (B)(2) of this section, a person who is participating in the voluntary action program may utilize an independent contractor to serve as a certified professional or accredited laboratory.
R.C. § 3746.10