Class I
Disposal of hazardous and non-hazardous industrial or municipal waste.
1: Hazardous Industrial.
1-C: Commercial Hazardous Industrial.
2: Non-hazardous Industrial.
2-C: Commercial Non-hazardous Industrial.
Class II
Disposal or storage of fluids exclusively associated with oil and natural gas production (e.g., saltwater disposal, enhanced recovery).
10: Hydrocarbon storage (liquid).
10-I: Inactive hydrocarbon storage.
11-A: Compressed air storage.
11-AI: Inactive compressed air storage.
11-FS: Formation gas storage.
11-L: LPG storage (salt dome).
11-LI: Inactive LPG storage.
11-N: Natural gas storage (salt dome).
11-NI: Inactive natural gas storage.
3: Orphaned injection/mining.
4: Producing or cyclic injection.
5: Produced salt water.
5-C: Community salt water disposal.
5-SC: Salt water disposal (salt cavern).
5-SCC: Community SWD (salt cavern).
6: Annular salt water disposal.
7: Commercial salt water disposal.
8: E&P waste disposal.
8-N: Commercial E&P waste disposal.
9-C: Enhanced Recovery (ER) - Community.
9-CO: ER - CO2 injection.
9-FF: ER - Fire flood.
9-IG: ER - Gas injection.
9-IGW: ER - Gas and water injection.
9-IO: ER - Other injection.
9-IW: ER - Water injection.
9-O: ER - Observation well.
9-W: ER - Water.
Class III
Solution mining of minerals like salt, sulfur, or uranium.
12-B: Brine solution mining.
12-BI: Inactive brine mining.
12-O: Other solution mining.
12-OI: Inactive other mining.
12-S: Sulfur solution mining.
12-SI: Inactive sulfur mining.
UIC Program Sub-Status' By Well Class
Louisiana is one of the few states that has primacy, meaning the state government, specifically the Louisiana Department of Conservation and Energy (DCE), manages the program instead of the federal EPA.
Louisiana is one of the few states that has primacy, meaning the state government, specifically the Louisiana Department of Conservation and Energy (DCE), manages the program instead of the federal EPA.
Class Iv
Injection of hazardous or radioactive waste into or above a water source.
Class v
Covers all other injection practices (e.g., drainage, geothermal, aquifer remediation).
11-FO: Formation storage observation.
13: Improved sinkhole.
14: Industrial drainage.
15: Heat pump/AC return.
16: Geothermal.
17: Aquifer remediation.
18: Subsidence control.
19: Cesspool.
20: Industrial process waste.
21: Auto repair.
22: Vent well.
23: Special drainage.
24: Mud disposal.
25: Injection monitor.
26: Aquifer recharge.
27: Food processing.
28: Cooling water.
29: Aquifer storage (ASR).
30: Stratigraphic test.
31: CCS monitor.
32: Storage.
34: Experimental.
Class vI
Permanent storage of carbon dioxide for geologic sequestration to help mitigate climate change.
33: Geologic sequestration.