SECTION 252:515-25-34. Certification of final closure

(a)   Certification requirements. A Certification of Final Closure shall be submitted to the DEQ after completion of final closure. The Certification shall:

(1)   be signed by the owner/operator;

(2)   state that the facility was closed according to the approved closure plan, the permit, and applicable rules;

(3)   contain a closure report with related drawings, plans or specifications describing how closure was performed; and

(4)   indicate whether inspection of gas, groundwater, or surface water monitoring has shown the presence of elevated levels of any constituent or if any evidence of contamination related to site operations has been found and, if so, what corrective measures were taken.

(b)   Land disposal facilities. In addition to the requirements of (a) of this Section, a final closure map shall be included in the Certification of Final Closure for all land disposal facilities. The final closure map shall show as-built conditions at the time of closure, including but not limited to:

(1)   final contours of the entire site;

(2)   the permit boundary and boundaries of disposal areas;

(3)   the location of gas monitoring wells and extraction systems;

(4)   the location of groundwater monitoring wells;

(5)   the location of leachate management systems or surface impoundments;

(6)   the location of any permanent surface drainage structures;

(7)   aesthetic enhancements; and

(8)   other relevant information.

(c)   Professional engineer seal. The Certification of Final Closure shall be prepared and sealed by an independent professional engineer licensed in the State of Oklahoma if the facility served a population or population equivalent of greater than 5,000.

[Source: Added at 20 Ok Reg 1151, eff 6-1-03]