Ohio Rev. Code Ann. § 3745.71
(A) Except as otherwise provided in division (C) of this section, the owner or operator of a facility or property who conducts an environmental audit of one or more activities at the facility or property has a privilege with respect to both of the following:
(C) The privilege provided in this section does not apply to criminal investigations or proceedings. Where an audit report is obtained, reviewed, or used in a criminal proceeding, the privilege provided in this section applicable to civil or administrative proceedings is not waived or eliminated. Furthermore, the privilege provided in this section does not apply to particular information under any of the following circumstances:
(8)
(a) The information shows evidence of noncompliance with environmental laws and the owner or operator fails to do any of the following:
(10) Any circumstance in which both of the following apply:
(12) The information is not clearly identified as part of an environmental audit report. For purposes of this section, clear identification of information as part of an environmental audit report includes, without limitation, either of the following:
(G)