An incinerator subject to this part shall be designed and built with a primary combustion chamber that maintains a temperature of at least 800oF in the primary combustion chamber at all times when refuse is being incinerated, and a secondary combustion chamber(s) that is adequately designed and operated to combust gaseous and particulate matter suspended in the exhaust gas stream from the primary combustion chamber. The combustion device in each combustion chamber shall be in operation at all times when refuse is being incinerated.
Okla. Admin. Code § 252:100-17-5