Regulation 7
I.D.
Storage Tank Emission Controls
PART B — Oil and Natural Gas Operations › I. Volatile Organic Compound Emissions from Oil and Gas Operations
Selected provisions — not the complete section
… 4 more provisions in the full corpus
I.D.3.a.(i). Owners or operators of storage tanks with uncontrolled actual emissions of VOCs equal to or greater than four (4) tons per year based on a rolling twelve-month total must collect and control emissions from each storage tank by routing emissions to and operating air pollution control equipment that achieves a VOC control efficiency of 95%. If a combustion device is used, it must have a design destruction efficiency of at least 98% for VOC, except where the combustion device has been authorized by permit prior to March 1, 2020.
Plain-English summary
AI-generated · automated check against source text · Oct 4, 2026
This provision applies to owners or operators of storage tanks with uncontrolled actual VOC emissions of 4 tons per year or greater (based on a rolling twelve-month total). It requires them to collect and route emissions to air pollution control equipment achieving 95% VOC control efficiency. If a combustion device is used, it must have a design destruction efficiency of at least 98% for VOC, unless the device was authorized by permit before March 1, 2020.
I.D.3.a.(ii). Owners or operators of storage tanks with uncontrolled actual emissions of VOCs equal to or greater than two (2) tons per year based on a rolling twelve-month total and not subject to Section I.D.3.a.(i) must collect and control emissions from each storage tank by routing emissions to and operating air pollution control equipment that achieves a VOC control efficiency of 95%. If a combustion device is used, it must have a design destruction efficiency of at least 98% for VOC, except where the combustion device has been authorized by permit prior to March 1, 2020.
… 16 more provisions in the full corpus
Plain-English summary
AI-generated · automated check against source text · Oct 4, 2026
This provision applies to owners or operators of storage tanks with uncontrolled actual VOC emissions of 2 tons per year or greater (based on a rolling twelve-month total) that are not already subject to Section I.D.3.a.(i). It requires them to collect and control emissions from each storage tank using air pollution control equipment that achieves 95% VOC control efficiency. If a combustion device is used, it must have a design destruction efficiency of at least 98% for VOC, unless the combustion device was authorized by permit before March 1, 2020.
I.D.4. Alternative emissions control equipment and pollution prevention devices and processes installed and implemented after June 1, 2004, shall qualify as air pollution control equipment, and may be used in lieu of, or in combination with, combustion devices and/or vapor recovery units to achieve the emission reductions required by this Section I.D., if the following conditions are met:
… 8 more provisions in the full corpus
Plain-English summary
AI-generated · automated check against source text · Oct 4, 2026
An operator may use alternative emissions control equipment or pollution-prevention devices or processes (installed after June 1, 2004) instead of or alongside combustion devices or vapor recovery units to meet storage-tank emission-reduction requirements, but only if the operator first obtains a construction permit authorizing that alternative, provides public notice of the application, and receives EPA approval (or EPA fails to approve or disapprove within 45 days of receiving the permit materials from the Division, in which case it is deemed to have approved). The construction permit application must describe the equipment or process, explain where, when and how it will be used, document its control efficiency and how that efficiency will be measured, and describe the records and reports that will track emission reductions and operation.
The rest of Regulation 7 is in the full corpus.
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Regulation 7
CONTROL OF EMISSIONS FROM OIL AND GAS EMISSIONS OPERATIONS 5 CCR 1001-9
View official source ↗A preview of Regulation 7 — its structure, and a few AI-generated plain-English summaries. The full cross-referenced text is available to subscribers.
What's inside
- PART AApplicability and General Provisions
- Appendix AColorado Ozone Nonattainment or Attainment Maintenance Areas
- PART BOil and Natural Gas Operations
- PART CStatements of Basis, Specific Statutory Authority and Purpose
Plain-English summaries
Regulation 7
CONTROL OF EMISSIONS FROM OIL AND GAS EMISSIONS OPERATIONS 5 CCR 1001-9
Regulation 7 controls air emissions from oil and gas operations in Colorado. The regulation includes applicability and general provisions, requirements for oil and natural gas operations, and statements of basis and authority, along with an appendix covering Colorado's ozone nonattainment and attainment-maintenance areas, including a chronology of attainment status designations and maps.
I.A.1.a.
This provision applies to operators in the Denver 1-hour ozone attainment/maintenance area, any 1-hour ozone nonattainment area, the 8-hour Ozone Control Area, and northern Weld County. It establishes that all requirements of Regulation 7 apply within these geographic areas.
I.A.1.b.
This provision applies to any ozone nonattainment area in Colorado (areas designated nonattainment for either the 1-hour or 8-hour ozone standard). It states that all provisions of Regulation 7 apply to such areas unless otherwise specified in Section I.A.1.c. Maps and chronologies of Colorado's ozone nonattainment or attainment maintenance areas are provided in Appendix A of the regulation.
I.A.1.c.
This provision specifies that certain sections of Regulation 7 Part B (Sections II, III, IV, V, VI except VI.E., VII and VIII) apply statewide. Sections II through VIII and any other sections marked (State Only) are not federally enforceable, unless otherwise identified.
II.A.1.
The 8-Hour Ozone Control Area includes all of Adams, Arapahoe, Boulder, Douglas, Jefferson, Denver, and Broomfield counties, plus the southern portion of Larimer County (south of a line that starts at 40°42'47.1" north latitude on the Larimer-Weld boundary, runs west to 105°29'40.0" west longitude, south to 40°33'17.4" north latitude, then west to the Grand County boundary) and the southern portion of Weld County (below a line at 40°42'47.1" north latitude). The exact boundaries for the Larimer and Weld portions are defined by specific latitude and longitude coordinates.
Read the full text of Regulation 7
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