S.C. Code Regs. § § 61-79.265.G.117

Current through Register Vol. 48, 12, December 27, 2024

Section 61-79.265.G.117 - Postclosure care and use of property

(a)

(1) Post-closure care for each unit subject to the requirements of Sections265.117 through 265.120 must begin after completion of closure of the unit and continue for 30 years after that date. It must consist of at least the following:

(i) Monitoring and reporting in accordance with the requirements of R.61-79.265 Subparts F,K,L,M, and N and

(ii) Maintenance and monitoring of waste containment systems as specified in Sections265.91, 265.223, 265.280, and 265.310 of this Regulation, where applicable.

(2) Any time preceding closure of a hazardous waste management unit subject to postclosure care requirements or final closure, or any time during the postclosure period for a particular hazardous waste disposal unit, the Department may:

(i) Shorten the post-closure care period applicable to the hazardous waste management unit, or facility, if all disposal units have been closed, if it finds that the reduced period is sufficient to protect human health and the environment (e.g., leachate or groundwater monitoring results, characteristics of the hazardous wastes, application of advanced technology, or alternative disposal, treatment, or re-use techniques indicate that the hazardous waste management unit or facility is secure); or

(ii) Extend the post-closure care period applicable to the hazardous waste management unit or facility if it finds that the extended period is necessary to protect human health and the environment (e.g., leachate or groundwater monitoring results indicate a potential for migration of hazardous wastes at levels which may be harmful to human health and the environment).

(b) The Department may require, at partial and final closure, continuation of any of the security requirements of Section265.14 during part or all of the post-closure period when:

(1) Hazardous wastes may remain exposed after completion of partial or final closure; or

(2) Access by the public or domestic livestock may pose a hazard to human health.

(c) Post-closure use of property on or in which hazardous wastes remain after partial or final closure must never be allowed to disturb the integrity of the final cover, liner(s), or any other components of any containment system, or the function of the facility's monitoring systems, unless the Department finds that the disturbance:

(1) Is necessary to the proposed use of the property, and will not increase the potential hazard to human health or the environment; or

(2) Is necessary to reduce a threat to human health or the environment.

(d) All post-closure care activities must be in accordance with the provisions of the approved post-closure plan as specified in Section265.118.

S.C. Code Regs. § 61-79.265.G.117

Amended by State Register Volume 11, Issue No. 11, eff November 27, 1987; State Register Volume 14, Issue No. 11, eff November 23, 1990; State Register Volume 16, Issue No. 12, eff December 25, 1992.