After a hazardous waste facility has been closed, its owner or operator shall properly maintain and monitor the hazardous waste facility for a period of time required by rules of the Board and shall make such repairs or improvements as deemed necessary by the Department to ensure that no migration of hazardous waste material will occur from the hazardous waste facility. The rules of the Board which specify the period of time for maintenance and monitoring of closed facilities shall be in compliance with the hazardous waste regulations of the U.S. Environmental Protection Agency pursuant to the federal Resource Conservation and Recovery Act.
Okla. Stat. tit. 27A, § 2-7-124