1. (a) Primary settling. All sewage entering a lagoon must first pass through a septic tank for primary settling.
2. (b) Total retention. All lagoons shall be total retention.
3. (c) Location. Installers shall not locate lagoons where vegetation, timber, or terrain could interfere with prevailing wind action or shade the lagoon during daylight hours.
4. (d) Prohibitions. The owner/operator shall not dispose or store wastes or contaminants other than sewage in the lagoon. The owner/operator shall not discharge or dispose of sludge from the lagoon prior to obtaining approval from the DEQ.

5. (e) Closure. A closure plan shall be submitted for all lagoons being classified as small public on-site sewage treatment systems or when DEQ requires closure of a lagoon when a public health or safety issue arises and will include:

   1. (1) A description of how the wastewater will be disposed.
   2. (2) A description of how the sludge will be disposed if more than six (6) inches are present.
   3. (3) A description of final grading and erosion controls.

   4. (4) A time schedule indicating:

      1. (A) a time schedule for completion of each activity.
      2. (B) the estimated date of final completion of the closure activity.
6. (f) Examples. Refer to Appendix O, "Examples of Lagoon Installation" for examples.

Added at 16 Ok Reg 1895, eff 6-11-99

Amended at 18 Ok Reg 1616, eff 6-1-01

Amended at 21 Ok Reg 1618, eff 6-11-04

Amended at 25 Ok Reg 2318, eff 7-11-08

Amended at 37 Ok Reg 1296, eff 9-15-20