An operating permit shall not be required for excavation or grading conducted solely in aid of on-site farming or on-site construction. This shall include grading, backfilling, plowing or excavating areas for agriculture, aquaculture, silviculture or on-site construction. In the event the Department is uncertain as to the specific use of material resulting from on-site farming or on-site construction, a letter of intent may be required prior to granting an exemption from an operating permit. Exemptions granted by the Department may include references to other required plans or permits including, but not limited to, local land use permits, grading permits, erosion and sediment control plans or conservation plans.
S.C. Code Regs. § 89-30