S.C. Code Ann. § 58-36-30: Ordinances superseded and preempted; effect of permit on liability.

(A) The provisions in this chapter supersede and preempt any ordinance enacted by a local political subdivision that purports to:

(1) require operators to obtain permits from local governments in order to identify facilities;

(2) require pre-marking or marking of facilities;

(3) specify the types of paint or other marking devices that are used to identify facilities; or

(4) require removal of marks.

(B) A permit issued pursuant to law authorizing an excavation or demolition shall not be deemed to relieve a person from the responsibility for complying with the provisions of this chapter.