and if the activity or use causes shellfish bottoms or waters to be unsuitable for the purposes of shellfish propagation or diminishes the productivity of any shellfish bottoms or waters, the agency which allowed the activity, upon recommendation by the department, must require mitigation for the loss of the resource. Mitigation must not be considered as a factor to justify adverse impacts, and this section must not be interpreted as authorizing any adverse impact on shellfish bottoms or waters.
S.C. Code § 50-5-920