Nothing is brokered between your dock and the receiving facility
A great deal of waste work is arranged by companies that own no trucks and hold no permits. That is a legitimate way to operate and it has a consequence: when a question comes back from the receiving facility, the company answering it is not the company that moved the load. Greer is a permitted hazardous waste transporter moving material on its own equipment, which means one company on the manifest and one company to call.