Protest Served on commission, ORS and Applicant. The original and any accompanying documents of the protest must be deposited in the United States Mail addressed to the commission and ORS or delivered to the commission and ORS within the time established for filing protests, and it must appear in some statement attached to the protest that a copy thereof has been deposited in the United States Mail, addressed to the applicant postage prepaid or delivered to the applicant, and a copy sent to his attorney, if any, appearing in the notice of filing.
S.C. Code Regs. § 103-136