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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 252. Department of Environmental Quality |
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Chapter 515. Management of Solid Waste |
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Subchapter 25. Closure and Post-Closure Care |
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Part 5. POST-CLOSURE |
SECTION 252:515-25-54. Post-closure operational requirements
Latest version.
- (a) All disposal facilities. All disposal facilities in post-closure monitoring shall perform the following.(1) Security and access control. Fences and locked gates shall be maintained and signs shall be posted on the outer perimeter to provide notice that the site is a closed solid waste disposal facility.(2) Annual post-closure report. No later than April 1st of each year after the DEQ's approval of the certification of final closure, a post-closure maintenance and monitoring report shall be submitted to the DEQ until the post-closure period ends. This report shall document the maintenance performed and summarize all monitoring data for the previous year.(b) Land disposal facilities. Land disposal facilities in post-closure monitoring shall also perform the following.(1) Monitoring. The integrity of the groundwater and/or explosive gas monitoring systems shall be maintained.(A) Groundwater monitoring shall be performed at least semi-annually, unless reduced in accordance with OAC 252:515-9-73(c).(B) Explosive gas monitoring, if required during the active life, shall be performed at least semi-annually.(2) Leachate collection, treatment and disposal.(A) The leachate collection system shall be maintained and operated to ensure leachate is collected, treated and/or disposed in accordance with Subchapter 13 of this Chapter.(B) The leachate collection systems shall be equipped with a system for automatic and continuous removal of leachate not requiring intervention by the owner/operator.(C) Untreated leachate shall not be stored on-site unless the permit provides a specified method and capacity.(3) Final cover. The integrity and effectiveness of the final cover shall be maintained in compliance with OAC 252:515-19-53, including making repairs to the cover as necessary to correct the effects of settlement, subsidence, erosion, ponding of water, or other events, and prevent run-on and run-off from eroding or otherwise damaging the final cover.