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.

Midstream Steering Committee

Each oil and gas midstream segment owner or operator must participate in this program to reduce GHG emissisons from midstream fuel combustion equipment.  (Reg. 22, Part B, Section III)

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.B.2.h: ECD Performance Testing
Part D, Section II.C: Storage Tank Emissions Management (STEM)
Part D, Section II.G: Well Liquid Unloading, Downhole Well Maintenance, and Well Plugging Activities
Part DSection IV: Natural Gas Transmission and Storage Segment
Part DSection V: Oil and Natural Gas Operations Emissions Inventory

Update regarding the 2021 Annual Oil and Gas Emission Inventory Reporting (update 7/1/2022):

  • The 2021 Oil and Natural Gas Emission Inventory Reporting web form is open and ready to accept the 2021 reporting spreadsheets. 
  • The Division updated the 2021 reporting forms (spreadsheets) on 6/1/2022.  The updates removed inconsistencies in the drop-down selection menus across the three spreadsheets.  Operators are encouraged to use the latest reporting spreadsheets for submission.
Oil and Natural Gas Emissions Inventory Reporting submission form

The web portal and submission form 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, can be accessed here. The web portal and submission form must be used by entities subject to Colorado's oil and natural gas emissions inventory reporting requirements. A registered user account is required to access the submission form. A PDF of the submission form is available below for review but do not use this to submit a report. The form for reporting can only be accessed through the web portal. Please see the Frequently Asked Questions (FAQ) document below for more detail and answers to others questions on using the form and submitting reports.





Midstream and Pipeline: 



    Part D, Section VI: Oil and Natural Gas Pre-Production and Early Production Operations


    Part E, Section I.D.5.b - Large Engines
    Part D, Section III.C.4 - Pneumatics Reporting


    Leak Detection and Repair (LDAR)



    • PS Memo 14-04 LDAR and open-ended valves and line requirements.
    • March 2021 LDAR Training slides.

    LDAR Annual Reports


    Visible Emissions Observations



    Regulatory Updates Guidance


    2021 Revisions to Regulation No. 7 and Regulation No. 22


    2020 Revisions to Regulation No. 7


    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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