Oil & gas compliance and recordkeeping

Oil & Gas

Storage tank and vapor control system guidelines

Guidelines for design, operation, and maintenance of vapor control systems at oil and gas facilities.

Oil & gas operating and maintenance plans

Forms and guidance for O&M plans for equipment at oil & gas facilities.

Regulation No. 7

Approved Instrument Monitoring Method (AIMM)

Part D, Section I.F.3: Storage Tank Control Strategy 

Part D, Section I.H.6: Glycol dehydrators

Part D, Section II: Alternative Emissions Control Devices

Part D, Section II.C: Storage Tank Emissions Management (STEM)

Part D, Section II.G: Well Liquid Unloading

Section IV: Natural Gas Transmission and Storage Segment

·         COMING SOON 

Section V: Oil and Natural Gas Operations Emissions Inventory




Oil and Natural Gas Emissions Inventory Reporting submission form

The Oil and Natural Gas Emissions Inventory Reporting submission form is now available to be used for submitting annual emissions inventory reports for oil and gas as required Under Air Quality Control Commission (AQCC) Regulation No. 7, Part D, Sections IV and V. The form should be used by entities subject to Colorado's oil and natural gas emissions inventory reporting requirements. 

Leak Detection and Repair (LDAR)


LDAR Annual Reports

Visible Emissions Observations



2017 Revisions to Regulation No. 7

2014 Changes to Regulation Nos. 3, 6, and 7

Optical Gas Imaging Infrared (IR) Camera Inspection Program

IR camera inpection pilot project assessment (July 2016)
Two-year project using optical gas imaging infrared cameras to identify and address sources of emission leaks and venting. 

IR camera inspection program updated assessment (March 2019)

Noble Energy consent decree

Settlement between Noble Energy, the Colorado Department of Public Health and Environment and the U.S. Environmental Protection Agency, effective June 2, 2015.

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