South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-92 - UNDERGROUND STORAGE TANK CONTROL REGULATIONS
Part 280 - TECHNICAL STANDARDS AND CORRECTIVE ACTION REQUIREMENTS FOR OWNERS AND OPERATORS OF UNDERGROUND STORAGE TANKS (UST)
Subpart G - OUT-OF-SERVICE UST SYSTEMS AND CLOSURE
Section 61-92.280.G.72 - ASSESSING THE SITE AT CLOSURE OR CHANGE-IN-SERVICE AND REPORTING REQUIREMENTS

(a) Before permanent closure or a change-in-service is completed, owners and operators must measure for the presence of a release where contamination is most likely to be present at the UST site. In selecting sample types, sample locations, and measurement methods, owners and operators must consider the method of closure, the nature of the stored substance, the type of backfill, the depth to groundwater, and other factors appropriate for identifying the presence of a release. The requirements of this section are satisfied if one of the external release detection methods allowed in Section 280.43(e) and (f) is operating in accordance with the requirements in Section 280.43 at the time of closure or change-in-service, and indicates no release has occurred.

(b) If contaminated soils, contaminated groundwater, or free product as a liquid or vapor is discovered under paragraph (a) of this section, or by any other manner, owners and operators must begin corrective action in accordance with Subpart F of this part.

(c) Owners and operators must submit the information collected in compliance with paragraph (a) of this section, on a form supplied by the Department or an approved substitute, to the Department not later than 60 days after the tank has been either removed from the ground or filled with an inert solid material.