S.C. Code § 44-6-1115
The department shall charge every ambulance service a uniform ambulance assessment fee. The fee must equal the product of the ratio of the ambulance service's net revenue to all ambulance services' net revenue statewide multiplied by the total ambulance services assessment amount. The department shall establish each ambulance service's fee amount using the best data available as determined by the department in consultation with the South Carolina EMS Association and shall update each ambulance service's fee amount on a periodic basis, but at least annually, as updated information becomes available. All ambulance services, regardless of payment model, shall be charged a fee including, but not limited to, ambulance services using fee-for-service and managed care arrangements. An ambulance service's liability to pay the fee shall, in the case of a transfer of ownership, be assumed by the successor-in-interest to the ambulance service.
S.C. Code § 44-6-1115