1. (a) An approved Residuals Management Plan is required for storage, disposal or reuse of WTP residuals, including residuals from iron and manganese removal plants. When a permit is required, a residuals management plan shall be filed with the DEQ and shall include the following:

   1. (1) estimate the volume of residuals produced using Appendix F,
   2. (2) method of residuals management and storage,
   3. (3) method for drying residuals,
   4. (4) characterization of residuals, and
   5. (5) method of ultimate disposal or reuse.
2. (b) WTP residuals may be discharged to a sanitary sewer, provided the discharge will not cause pass-through or interference to the publicly-owned treatment works and the owner of the treatment works agrees to accept the discharge. A pre-treatment permit may be required if the discharge to the publicly-owned treatment works meets the requirements of 40 CFR, Part 403. When discharging to a sanitary sewer, a flow-equalization system may be required to prevent the overloading of the sewer and interference with the waste treatment processes.
3. (c) Mechanical dewatering of residuals is acceptable and shall be constructed in accordance with OAC 252:656-19-5(3),(4) and (5). Mechanical dewatering equipment will be approved on a case-by-case basis.
4. (d) Storage facilities shall be provided for concentrated residuals.
5. (e) An approved sludge management plan is required for the land application of WTP residuals. If the residuals are being applied as a fertilizer or soil-amendment, the Oklahoma Department of Agriculture, Food and Forestry regulations apply.
6. (f) The requirements of OAC 252:515 apply to WTP residuals disposal in landfills.

Added at 18 Ok Reg 1612, eff 6-1-01

Amended at 25 Ok Reg 2304, eff 7-11-08

Amended at 29 Ok Reg 1035, eff 7-1-12

Amended at 33 Ok Reg 1472, eff 9-15-16