Okla. Admin. Code § 252:645-1-7
Septage from holding tanks, portable toilets or Type III marine sanitation devices shall be considered and disposed of as sewage at a permitted wastewater treatment facility or at a pretreatment facility that is permitted by a city operating a pretreatment program approved by DEQ. All other septage may only be disposed of:
Added at 11 Ok Reg 2175, eff 5-26-94
Amended at 18 Ok Reg 1625, eff 6-1-01
Amended at 27 Ok Reg 2158, eff 7-11-10