The following underground injection control authorizations require Tier I applications.

1. (1) Minor modification of a permit for Class I, III, and V wells in accordance with 40 CFR §144.41.
2. (2) Modification of an approved closure and/or post-closure plan for a Class I hazardous waste injection well.
3. (3) Modification of an approved plugging and abandonment plan for Class I nonhazardous and Class III injection wells.
4. (4) Modification of an approved corrective action plan for a Class I injection well.
5. (5) Emergency permit in accordance with 40 CFR § 144.34.
6. (6) Minor administrative modification of all permits and other authorizations.
7. (7) Class V injection well permit, or modification, for disposal of drinking water treatment residuals into a Class II-D injection well permitted by the Oklahoma Corporation Commission.

Added at 18 Ok Reg 1922, eff 6-11-01

Amended at 19 Ok Reg 1008, eff 6-1-02

Amended at 32 Ok Reg 934, eff 9-15-15