Colorado Biennial Report regulations & environmental compliance analysis

Colorado Biennial Report: What you need to know

Governing Law and Regulations

Large quantity generator (LQG) biennial report requirements: 6 Code of Colorado Regulations (CCR) 1007-3 Section 262.41

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Treatment, storage, and disposal facility (TSDF) biennial report requirements: 6 CCR 1007-3 Section 264.75 and 6 CCR 1007-3 Section 265.75

Regulatory Agency

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

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Colorado has adopted the federal biennial report requirements for hazardous waste large quantity generators (LQGs) and treatment, storage, and disposal facility (TSDF) owners and operators. The federal form, EPA Form 8700-13A/B, must be sent to the Colorado Department of Public Health and Environment (CDPHE) by March 1 of each even-numbered year.

Administration and enforcement. CDPHE's Hazardous Materials and Waste Management Division administers and enforces the state's biennial report requirements.

State Requirements


Colorado is one of the few states that requires the biennial report Form OI to be completed and submitted by sites that send hazardous waste off-site. Contact CDPHE for more information.

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