Okla. Admin. Code § 252:619-5-1

Current through Vol. 42, No. 4, November 1, 2024

Section 252:619-5-1 - Closure of total retention lagoons

(a)Timing of closure. Within six (6) months of permanently taking a total retention lagoon out of service, unless an extension is granted by DEQ, the permittee shall close the lagoon according to the requirements of this subchapter.

(b)Closure plan. The permittee shall submit a closure plan detailing the schedule of proposed closure activities to DEQ ninety (90) days prior to beginning closure activities. The closure plan must receive approval from DEQ prior to the permittee beginning closure activities. At a minimum, the closure plan must include:

(1) A description of how the wastewater from lagoon will be disposed;

(2) A description of how the sludge will be disposed;

(3) A description of final grading and erosion control;

(4) A description of how unauthorized discharges of wastewater and sludge will be prevented during closure activities;

(5) A time schedule indicating:

(A) the major closure activities;

(B) the approximate time to complete each activity; and

(C) the estimated date of final completion of all closure activities; and

(6) The name, address, and telephone number of all the owners of record of the land upon which the lagoon is located.

(c)Closure Requirements. The following are the closure requirements:

(1)Wastewater. Wastewater from the lagoon must be either:

(A) land applied at a site permitted for the land application of wastewater; or

(B) disposed of at another permitted wastewater treatment facility.

(2)Sludge. Sludge from the lagoon must be measured and if the average sludge thickness in the lagoon:

(A) exceeds six (6) inches, the sludge must be removed from the lagoon and either land applied or disposed of in a permitted landfill. Land application will require the approval by DEQ of a Sludge Management Plan pursuant to OAC 252:606. Disposal in a landfill must meet the requirements of OAC 252:515.

(B) is six (6) inches or less, the sludge does not need to be removed from the site.

(d)Discharges prohibited. Under no circumstance may wastewater or sludge be:

(1) discharged to the waters of the State;

(2) allowed to flow or be carried to adjacent properties; or

(3) be disposed at any site not permitted by DEQ for that purpose.

(e)Wastewater/sludge characterization. When requested by DEQ, the permittee must provide a chemical analysis of representative sample(s) of the contents of the lagoon.

(f)Additional requirements. DEQ may require continuing monitoring, sampling, and reporting as deemed necessary.

(g)Certificate of closure. The permittee shall submit to DEQ written certification that the lagoon was closed in accordance with the approved closure plan within forty-five (45) days of completing the closure of the lagoon.

Okla. Admin. Code § 252:619-5-1

Added at 22 Ok Reg 1471, eff 6-15-05