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Virginia Administrative Code
Title 9. Environment
Agency 20. Virginia Waste Management Board
Chapter 81. Solid Waste Management Regulations
12/3/2024

9VAC20-81-370. Closure requirements for surface impoundments and lagoons.

A. Closure. At closure, the owner or operator shall:

1. Remove all waste residue, contaminated containment system components (liners, etc.), contaminated subsoils, and decontaminate structures and equipment contaminated with waste, and manage them as solid waste (or hazardous waste, if applicable) unless exempt under Part III (9VAC20-81-100 et seq.) of this chapter; or

2. Close the impoundment and provide postclosure care for a landfill under Part III (9VAC20-81-100 et seq.) of this chapter, including the following:

a. Eliminate free liquids by removing liquid waste and waste residue;

b. Install a groundwater monitoring system and initiate groundwater monitoring in accordance with the requirements of 9VAC20-81-250;

c. Stabilize remaining waste residues to a bearing capacity necessary to support the final cover; and

d. Cover the surface impoundment with a final cover designed and constructed in accordance with the requirements of 9VAC20-81-160 D 2.

3. Close inactive, new, and existing CCR surface impoundments in accordance with the requirements of Part VIII (9VAC20-81-800 et seq.) of this chapter or this subsection, whichever is more stringent.

B. Inspection. The department shall inspect all solid waste management facilities at the time of closure to confirm that the closing is complete and adequate. It shall notify the owner of a closed facility, in writing, if the closure is satisfactory and shall require any necessary construction or such other steps as may be necessary to bring unsatisfactory sites into compliance with this chapter.

Statutory Authority

§ 10.1-1402 of the Code of Virginia; 42 USC § 6941 et seq.; 40 CFR Parts 257 and 258.

Historical Notes

Derived from Virginia Register Volume 27, Issue 12, eff. March 16, 2011; amended, Virginia Register Volume 32, Issue 9, eff. January 27, 2016.

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