S.D. Codified Laws § 34A-13-4

To assure an adequate response to a release, the director may take corrective action if the department determines that the release constitutes a clear and immediate danger requiring immediate action to prevent, minimize, or mitigate damage to the public health and welfare or the environment. Before taking any action pursuant to this section, the department shall make all reasonable efforts, taking into consideration the urgency of the situation, to order and permit a responsible person to take a corrective action and notify the owner of real property where the corrective action is to be taken.