S.D. Codified Laws § 1-41-25.2
The department may not request results of an environmental audit. However, an environmental audit is subject to discovery according to the rules of civil or criminal procedure. If a regulated entity discloses a violation found during an environmental audit, the section of the environmental audit report pertaining to a violation of environmental law, rule, regulation, or permit enforced by the department may be summarized for the purposes of disclosure to the department secretary. The summary shall include the date the violation was found and the entity that conducted the environmental audit.
Documents, communications, compliance data, reports, or other information required to be collected, developed, maintained, or reported to the department according to state law, rule, regulation, or permit are not covered by the provisions of §§ 1-41-25 to 1-41-25.4, inclusive.
SDCL 1-41-25.2