Colorado Underground Injection Wells: What you need to know

Hazardous waste: 6 Code of Colorado Regulations (CCR) 1007-3 Section 100.21(b)

Fees: 6 CCR 1007-3 Section 100.31 to 100.33

Gas and oil wells: 2 CCR 404-1

Operations: 2 CCR 404-1 Rule 405

Monthly reports: 2 CCR 404-1 Rule 316A

Mechanical integrity test: 2 CCR 404-1 Rule 316B and 2 CCR 404-1 Rule 326

Underground disposal of water: 2 CCR 404-1 Rule 325

Temporary abandonment: 2 CCR 404-1 Rule 319

Colorado Department of Public Health and Environment (CDPHE) Office of Environment Hazardous Materials and Waste Management Division

CDPHE Office of the Environment Water Quality Control Division

Colorado Department of Natural Resources Colorado Oil and Gas Conservation Commission (COGCC)

U.S. Environmental Protection Agency (EPA) Region 8

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

• Rules. Colorado has not received primacy from the U.S. Environmental Protection Agency (EPA) to administer the underground injection control (UIC) program for Class I, III, V, and VI wells. Class IV wells that use underground injection wells to dispose of hazardous waste are deemed to have a state Resource Conservation and Recovery Act (RCRA) permit if they have a permit to conduct this activity from EPA. However, underground injection wells are considered hazardous waste disposal facilities in Colorado, which means they are subject to the state's facility fees.

The Colorado Oil and Gas Conservation Commission (COGCC) permits Class II wells in the state under state regulations.

• Administration and enforcement. Colorado's underground injection well rules for Class I, III, V, and VI ...