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.70 - TEMPORARY CLOSURE
Current through Register Vol. 48, No. 9, September 27, 2024
(a) When an UST system is temporarily closed, owners and operators must continue operation and maintenance of corrosion protection in accordance with Section 280.31, and any release detection in accordance with Subparts D and K of this part. Subparts E and F of this part must be complied with if a release is suspected or confirmed. However, release detection and release detection operation and maintenance testing and inspections in Subparts C and D of this part are not required as long as the UST system is empty. The UST system is empty when all materials have been removed using commonly employed practices so that no more than 2.5 centimeters (one inch) of residue, or 0.3 percent by weight of the total capacity of the UST system, remain in the system. In addition, spill and overfill operation and maintenance testing and inspections in Subpart C of this part are not required.
(b) When an UST system is temporarily closed for 3 months or more, owners and operators must also comply with the following requirements:
(c) When an UST system is temporarily closed for more than 12 months, owners and operators must permanently close the UST system if it does not meet either performance standards in Section 280.20 for new UST systems or the upgrading requirements in Section 280.21, except that the spill and overfill equipment requirements do not have to be met. Owners and operators must permanently close the substandard UST systems at the end of this 12-month period in accordance with Sections 280.71 through 280.74, unless the Department provides an extension of the 12-month temporary closure period. Owners and operators must complete a site assessment in accordance with Section 280.72 before such an extension can be applied for.
(d) When an UST system is temporarily closed, owners and operators must maintain records in accordance with Section 280.45(b)(3).
