Okla. Admin. Code § 252:515-31-4
Records shall be maintained in the operating record, itemizing the type, quantity, and source of NHIW received from persons disposing greater than 10 cubic yards of NHIW in a calendar month. Such records shall be submitted to the DEQ no later than the last day of the month following the reporting month.
Added at 20 Ok Reg 1151, eff 6-1-03