# 7 CCR 1101-16: RETAIL NATURAL GAS (CNG/LNG) REGULATIONS

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## Section

- **Citation:** 7 CCR 1101-16
- **Heading:** RETAIL NATURAL GAS (CNG/LNG) REGULATIONS
- **Jurisdiction:** Colorado
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Code of Colorado Regulations / 1100 Department of Labor and Employment / 1101 Division of Oil and Public Safety / 7 CCR 1101-16

## Text

1
DEPARTMENT OF LABOR AND EMPLOYMENT
Division of Oil and Public Safety
RETAIL NATURAL GAS (CNG/LNG) REGULATIONS
7 CCR 1101-16
[Editor’s Notes follow the text of the rules at the end of this CCR Document.]
_________________________________________________________________________
ARTICLE 1
GENERAL PROVISIONS
Section 1-1
Basis and Purpose
The basis and purpose of these regulations is to set forth minimum standards for the design, construction,
location, installation and operation of retail natural gas fueling facilities, including mobile refueling vehicles
and equipment, which are reasonably necessary for the protection of the health, welfare and safety of the
public and persons using such materials.
Section 1-2
Technical Rationale
The technical requirements of these regulations are based on generally accepted national and
international codes and standards governing the minimum levels of acceptability for inspections,
specifications, shipment notification, record keeping, labeling of containers, use of meters or mechanical
devices for measurement, submittal of installation plans and minimum standards for the design,
construction, location, installation and operation of retail natural gas systems, including mobile refueling
vehicles and equipment.
Section 1-3
Statutory Authority
These regulations are created pursuant to 8-20-102 and 39-27-123 of the Colorado Revised Statutes.
Section 1-4
Effective Date
These regulations shall be effective on September 15, 2018. The previous version of these regulations
was effective January 31, 2014.
Section 1-5
Codes and Standards
Section 1-5-1 Codes incorporated by reference
The following codes are incorporated by reference.
(a)
NFPA 52, Vehicular Gaseous Fuel Systems Code, 2016 edition.
(b)
NFPA 30-A, Code for Motor Fuel Dispensing Facilities & Repair Garages, 2018 edition.
(c)
NIST Handbook 44 Specifications, Tolerances, and Other Technical Requirements for Weighing
and Measuring Devices, 2018 edition.
odes and Standards
Section 1-5-1 Codes incorporated by reference
The following codes are incorporated by reference.
(a)
NFPA 52, Vehicular Gaseous Fuel Systems Code, 2016 edition.
(b)
NFPA 30-A, Code for Motor Fuel Dispensing Facilities & Repair Garages, 2018 edition.
(c)
NIST Handbook 44 Specifications, Tolerances, and Other Technical Requirements for Weighing
and Measuring Devices, 2018 edition.
(d)
NIST Handbook 130 Uniform Laws and Regulations in the Areas of Legal Metrology and Engine
Fuel Quality, 2018 edition.
Code of Colorado Regulations
Secretary of State
State of Colorado

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All NFPA codes incorporated by reference may be purchased from:
National Fire Protection Association
1 Batterymarch Park
Quincy, Massachusetts 02169-7471
1-800-344-3555
www.nfpa.org
All NIST codes incorporated by reference may be purchased from:
National Institute of Standards and Technology
100 Bureau Drive
Gaithersburg, Maryland 20899
303-975-4004
www.nist.gov
For free download: www.nist.gov/pml/weights-and-measures/publications/nist-handbooks
Section 1-5-2 Inspection of incorporated codes
Interested parties may inspect and obtain copies of excerpts of the referenced incorporated materials for
a reasonable charge by contacting the Division of Oil and Public Safety at 633 17th Street, Suite 500,
Denver, CO 80202 or 303-318-8525.
Section 1-5-3 Later amendments not included
These regulations do not include later amendments to or editions of the incorporated material.
Section 1-6
Definitions
Terms in these regulations shall have the same meaning as those found in Title 8, Article 20 and Title 9,
Article 4 of the Colorado Revised Statutes. In addition, unless the context otherwise requires:
ASME International – ASME International was formerly the American Society of Mechanical
Engineers (ASME)
include later amendments to or editions of the incorporated material.
Section 1-6
Definitions
Terms in these regulations shall have the same meaning as those found in Title 8, Article 20 and Title 9,
Article 4 of the Colorado Revised Statutes. In addition, unless the context otherwise requires:
ASME International – ASME International was formerly the American Society of Mechanical
Engineers (ASME).
British Thermal Units or BTU – Means a scientific unit of measurement equal to the quantity of
heat required to raise the temperature of one pound of water one degree Fahrenheit at
approximately sixty degrees Fahrenheit.
Compressed Natural Gas (CNG) – Means natural gas which has been compressed and
dispensed into fuel storage containers and is suitable for use as an engine fuel.
CNG DGE - 1 CNG DGE is equal to 6.384 lbs (2.895 kg) of CNG.
CNG GGE - 1 CNG GGE is equal to 5.660 lbs (2.567 kg) of CNG.
Condemned – Means a condemned container assembly and piping system which is
determined by a state inspector to be so unsafe that further use is prohibited until it is
satisfactorily repaired or replaced.
Container Assembly – Includes US Department of Transportation (DOT) and ASME containers,
commonly known as tanks or cylinders.
CRS – Means the Colorado Revised Statutes.

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Division – Means the Division of Oil and Public Safety, which is the regulatory agency of the
Colorado Department of Labor and Employment having jurisdiction over retail natural gas
systems per the provisions of CRS 8-20-102 (3).
Existing Installation – Includes any natural gas container assembly and piping system at a
natural gas fueling facility that has been placed into service prior to the effective date of these
regulations and/or has received its initial inspection by a state inspector.
Gallon Equivalent – Means either a gallon diesel equivalent or a gallon gasoline equivalent
per the provisions of CRS 8-20-102 (3).
Existing Installation – Includes any natural gas container assembly and piping system at a
natural gas fueling facility that has been placed into service prior to the effective date of these
regulations and/or has received its initial inspection by a state inspector.
Gallon Equivalent – Means either a gallon diesel equivalent or a gallon gasoline equivalent.
Gallon Diesel Equivalent – Also known as Diesel Gallon Equivalent (DGE) - Means an amount
of a motor fuel that contains an average lower heating value of one hundred twenty-eight
thousand (128,000) BTUs but in no case contains a lower heating value of less than one hundred
twenty-four thousand (124,000) BTUs.
Gallon Gasoline Equivalent – Also known as Gasoline Gallon Equivalent (GGE) - Means an
amount of a motor fuel that contains an average lower heating value of one hundred fourteen
thousand (114,000) BTUs, but in no case contains a lower heating value of less than one
hundred ten thousand (110,000) BTUs.
Liquefied Natural Gas (LNG) – Means natural gas that has been liquefied at –259ºF (–126.1°C)
and stored in insulated cryogenic tanks for use as an engine fuel.
LNG DGE – 1 LNG DGE is equal to 6.059 lbs (2.748 kg) of LNG.
Mobile Refueling – Means the use of a United States DOT-approved vehicle or mobile
equipment on- site with tank(s) and/or pump(s) that dispenses natural gas engine fuel directly to
vehicles, storage vessels/cylinders or secondary refueling equipment.
Natural Gas – Means compressed natural gas (CNG) or liquefied Natural Gas (LNG) as defined
by this regulation.
Natural Gas Fueling Facility – Means a facility that has a natural gas container assembly and
piping system, including mobile refueling equipment, which is used for retail motor vehicle fueling
s engine fuel directly to
vehicles, storage vessels/cylinders or secondary refueling equipment.
Natural Gas – Means compressed natural gas (CNG) or liquefied Natural Gas (LNG) as defined
by this regulation.
Natural Gas Fueling Facility – Means a facility that has a natural gas container assembly and
piping system, including mobile refueling equipment, which is used for retail motor vehicle fueling.
New Installation – Means any natural gas container assembly and piping system at a natural
gas fueling facility that has been placed into service after the effective date of these regulations
and/or has not received its initial inspection by a state inspector.
NFPA – Means the National Fire Protection Association.
NIST– Means the National Institute of Standards and Technology.
Piping System – Means pipe, tubing, hose and flexible connectors with valves and fittings made
into complete systems for conveying natural gas from one point to another within a retail natural
gas fueling facility.
Proved – Means the act of having verified the accuracy of meters used to measure fuel and
petroleum products using a “prover”.
Prover – Means a calibrated volumetric receiver or mechanical device traceable to NIST
standards.

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Registered Serviceperson – Means any individual who for hire, award, commission or any other
payment of any kind installs, services, repairs or reconditions a commercial weighing or
measuring device and who voluntarily registers with the division.
Registered Service Agency (RSA) – Means any agency, firm, company or corporation that for
hire, award, commission or any other payment of any kind installs, services, repairs or
reconditions a commercial weighing or measuring device and that voluntarily registers with the
division.
Under agency registration, identification of individual servicepersons shall be required
registers with the division.
Registered Service Agency (RSA) – Means any agency, firm, company or corporation that for
hire, award, commission or any other payment of any kind installs, services, repairs or
reconditions a commercial weighing or measuring device and that voluntarily registers with the
division.
Under agency registration, identification of individual servicepersons shall be required.
Retail – Means the sale of CNG or LNG from a fixed location or by means of mobile refueling
equipment or vehicles, such as at a fueling station, in small or individual quantities for direct
consumption by the purchaser.
State Inspector – Means a person who is employed or authorized by the division to perform
inspections of retail natural gas fueling facilities.
Section 1-7
Applicability
The regulations contained herein shall apply to the installation and operation of all retail natural gas
systems when used for motor vehicle fueling.
Section 1-8
Condemning a Natural Gas Container Assembly and Piping System
(a)
Conditions which a state inspector may determine to be unsafe include: bypassed safety controls,
inoperative relief valves, any gas leak from a natural gas container assembly or piping system,
missing nameplate or any other condition deemed by a state inspector to be unsafe based on
codes adopted by this regulation. A container assembly or piping system that meets any condition
described above may be condemned by a state inspector.
(b)
The owner or user must shut down the condemned natural gas container assembly and piping
system as directed by a state inspector. If neither the owner nor user is available, a state
inspector will shut the system down.
(c)
A state inspector will affix a notice to a condemned natural gas container assembly and piping
system stating that it has been condemned and may not be used until satisfactory repairs are
made, as determined by a re-inspection by a state inspector or other person authorized by the
division.
ARTICLE 2
INSTALLATION
Section 2-1
General Requirements
le, a state
inspector will shut the system down.
(c)
A state inspector will affix a notice to a condemned natural gas container assembly and piping
system stating that it has been condemned and may not be used until satisfactory repairs are
made, as determined by a re-inspection by a state inspector or other person authorized by the
division.
ARTICLE 2
INSTALLATION
Section 2-1
General Requirements
(a)
All new retail natural gas installations shall be operated and maintained in accordance with the
codes adopted by this regulation, including any retroactive requirements adopted by the division
at the time of installation.
(1)
Unless otherwise specified, the provisions of these regulations are not intended to require
upgrading facilities, equipment, structures or installations that existed or were approved
for construction or installation prior to the effective date of these regulations. Where
specified, the provisions of these regulations shall be retroactive.

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(2)
If after inspection the division determines that an existing situation presents an
unacceptable degree of risk, the division shall be permitted to apply retroactively any
portion of the applicable codes listed in section 2-1 (a), as deemed appropriate.
(b)
Local Authorities Having Jurisdiction, including Fire Departments and building code officials, may
enforce more stringent requirements, including alternate codes and regulations. These
requirements may include but are not limited to the following.
(1)
Plan review and permitting for new natural gas fueling facilities.
(2)
Access to natural gas fueling facilities for the purpose of conducting inspections.
(3)
Delivery into containers located at natural gas fueling facilities.
Section 2-2
Installation Permits
stringent requirements, including alternate codes and regulations. These
requirements may include but are not limited to the following.
(1)
Plan review and permitting for new natural gas fueling facilities.
(2)
Access to natural gas fueling facilities for the purpose of conducting inspections.
(3)
Delivery into containers located at natural gas fueling facilities.
Section 2-2
Installation Permits
(a)
Plans for all new retail natural gas installations, including mobile refueling equipment used for
motor vehicle fueling, shall be submitted to and approved by the division before construction of
such installations begins.
(1)
Plans for the installation of new container assembly and piping systems, including mobile
refueling equipment, at existing retail natural gas fueling facilities shall be submitted to
the division for approval before construction of such installation begins.
(2)
Modifications to fuel stations including, but not limited to, increases in working pressure
or dispensing pressures shall be subject to a complete review in accordance with that
required with a new installation to include a notification of any supplying utility.
(3)
Plans for change of service of existing natural gas fueling facilities from non-retail service
shall be submitted to the division for approval before any such change of service occurs.
(4)
It is not necessary to submit plans for the repair, replacement or upgrade of compression,
drying, or other ancillary equipment.
ed with a new installation to include a notification of any supplying utility.
(3)
Plans for change of service of existing natural gas fueling facilities from non-retail service
shall be submitted to the division for approval before any such change of service occurs.
(4)
It is not necessary to submit plans for the repair, replacement or upgrade of compression,
drying, or other ancillary equipment.
(b)
The permit procedures are as follows.
(1)
The permit application shall be submitted using an application form provided by the
division.
(2)
The application shall include a plot plan containing all elements required by the division.
(3)
The division may deny the application if the proposed installation does not conform to
division statutes, to regulations or to codes adopted by the division, or if the application is
incomplete or determined to be inaccurate.
(4)
Construction and installation of drying, compression, storage, piping, dispensing and all
other associated equipment shall conform to the code(s) in effect at time of installation.
(5)
The division may revoke a permit if construction is not performed per the approved permit
or if the construction fails to meet operating or fire safety regulations established by the
division or by the applicable NFPA Code.
(6)
An installation permit approved by the division is automatically revoked if construction
does not begin within 6 months of approval, unless a written request for an extension is
submitted to and approved by the division.

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Section 2-3
Access Requirements
(a)
The division may inspect a retail natural gas system at any time during its construction. Access
shall be provided to the division or its agent for such purpose upon request.
months of approval, unless a written request for an extension is
submitted to and approved by the division.

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Section 2-3
Access Requirements
(a)
The division may inspect a retail natural gas system at any time during its construction. Access
shall be provided to the division or its agent for such purpose upon request.
(b)
After a retail natural gas system has been installed, the division may inspect the system to verify
compliance with design, construction, location, installation and operation requirements. Natural
gas fueling facility owners, tank owners, and owners of locations where a natural gas system is
installed shall grant inspection access to the division or its agent for such purpose upon request.
ARTICLE 3
DISPENSING AND FUEL QUALITY
Section 3-1
Retail Dispensing of Natural Gas
All retail dispensing of natural gas used as a motor vehicle fuel from either fixed equipment or mobile
refueling equipment, including vehicles, shall be operated and maintained in accordance with the
applicable requirements of the codes adopted by this regulation.
Section 3-2
Retail Motor Fuel Dispensers Inspection and Testing
(a)
All retail motor fuel dispensers (RMFDs) shall be suitable for their intended use, properly installed
accurate and maintained in that condition by their owner/operator.
(b)
All RMFDs shall have an active National Type Evaluation Program (NTEP) Certificate of
Conformance (CC) prior to installation or use for commercial purposes.
(c)
All RMFDs shall be capable of displaying delivered quantity in units of mass for calibration
purposes. All adjustments and calibrations of RMFDs shall be made utilizing mass measurement
standards.
(d)
The division shall be notified when any new, repaired or remanufactured RMFD is placed in
service at a new or existing installation.
(1)
Notification shall be submitted using a placed in service report provided by the division.
f displaying delivered quantity in units of mass for calibration
purposes. All adjustments and calibrations of RMFDs shall be made utilizing mass measurement
standards.
(d)
The division shall be notified when any new, repaired or remanufactured RMFD is placed in
service at a new or existing installation.
(1)
Notification shall be submitted using a placed in service report provided by the division.
(e)
No owner/operator of any RMFD shall use the RMFD for the measurement of natural gas unless
it has been proved in a manner acceptable to the division and sealed as correct by a state
inspector or registered service agency.
(1)
All RMFDs shall be proved and sealed as correct on an annual basis by either a state
inspector or registered service agency.
(f)
Containers used for proving CNG meters shall be manufactured, inspected, marked, tested,
retested, equipped and used in accordance with all provisions of NFPA 52 including the following:
(1)
Containers shall be fabricated of steel, aluminum, or composite materials.
(2)
The container shall be designed for CNG service.
(3)
The container shall be permanently marked “CNG” by the manufacturer.
(4)
Containers manufactured prior to the effective date of this code shall be permitted to be
used in CNG service if recommended for CNG service by the container manufacturer or if
approved by the authority having jurisdiction.

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(g)
Cylinders shall be manufactured in accordance with both of the following:
(1)
ANSI NGV 2, Compressed Natural Gas Vehicle (NGV) Fuel Containers, specifically for
CNG service
(2)
U.S. Federal Motor Vehicle Safety Standard, 49 CFR 571.304, Compressed Natural Gas
Fuel Container Integrity
(h)
Cylinders that have reached the labeled expiration date shall be removed from service.
(i)
Composite reinforced cylinders or other cylinders marked with exemption or special permit
numbers shall be removed from service.
Gas Vehicle (NGV) Fuel Containers, specifically for
CNG service
(2)
U.S. Federal Motor Vehicle Safety Standard, 49 CFR 571.304, Compressed Natural Gas
Fuel Container Integrity
(h)
Cylinders that have reached the labeled expiration date shall be removed from service.
(i)
Composite reinforced cylinders or other cylinders marked with exemption or special permit
numbers shall be removed from service.
(j)
Containers used for proving LNG meters shall be designed, fabricated, tested and marked (or
stamped) in accordance with all of the provisions of NFPA 52 including the following:
(1)
The Regulations of DOT Specification 4L or the “Rules for the Construction of Unfired
Pressure Vessels,” ASME Boiler and Pressure Vessel Code, applicable at the date of
manufacture.
(2)
LNG containers that are in contact with LNG or cold LNG vapor shall be physically and
chemically compatible with LNG and designed for service at –260°F (–162°C).
(3)
Container appurtenances shall have a rated working pressure not less than the maximum
allowable working pressure of the container.
(4)
For vacuum insulation, the inner tank, outer tank, and internal lines shall be tested for
vacuum leaks prior to installation on the vehicle.
(5)
Heat Leak. The manufacturer shall identify the maximum operating design pressure of
the container.
(6)
The construction of the container shall be such that the unrelieved pressure inside the
container will not exceed the maximum allowable working pressure of the container within
a 72 hour period after the container has been filled to its maximum filling volume with
LNG stabilized at the designed operating pressure and temperature equilibrium has been
established.
(7)
The ambient temperature during the 72 hour period shall be 70°F (21°C).
be such that the unrelieved pressure inside the
container will not exceed the maximum allowable working pressure of the container within
a 72 hour period after the container has been filled to its maximum filling volume with
LNG stabilized at the designed operating pressure and temperature equilibrium has been
established.
(7)
The ambient temperature during the 72 hour period shall be 70°F (21°C).
(k)
ASME Compliance for CNG and LNG Containers
(1)
Pressure vessels shall be manufactured, inspected, marked, and tested in accordance
with ASME Boiler and Pressure Vessel Code, Section VIII or Section X.
(2)
Adherence to applicable ASME Boiler and Pressure Vessel Code case interpretations
and addenda shall be considered as compliant with the ASME Boiler and Pressure
Vessel Code.
(3)
Pressure vessels manufactured to the requirements of the ASME Boiler and Pressure
Vessel Code shall be registered with the National Board of Boiler and Pressure Vessel
Inspectors.
(4)
The repair or alteration of an ASME pressure vessel shall comply with the requirements
of NB-23, National Board Inspection Code.

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(5)
Other welding or brazing shall be permitted only on saddle plates, lugs, or brackets
attached to the pressure vessel by the pressure vessel manufacturer.
(6)
The exchange or interchange of pressure vessel appurtenances intended for the same
purpose shall not be considered a repair or alteration.
(l)
Means shall be provided at the natural gas fueling facility to return all natural gas product used for
proving meters back to the compression and storage equipment or other receiving vessel when
proving is completed.
by the pressure vessel manufacturer.
(6)
The exchange or interchange of pressure vessel appurtenances intended for the same
purpose shall not be considered a repair or alteration.
(l)
Means shall be provided at the natural gas fueling facility to return all natural gas product used for
proving meters back to the compression and storage equipment or other receiving vessel when
proving is completed.
(m)
If unable to return product to the compression and storage equipment, and if venting of product to
the atmosphere is necessary, the following requirements shall apply.
(1)
The venting shall be performed only by trained personnel using an approved method of
atmospheric venting and following written procedures.
(2)
A valve shall be used to control the discharge of gas from the proving container.
(3)
Direct gas venting shall be done through a vent tube that diverts the gas flow to the
atmosphere in a safe direction at least 10 feet above grade, clear of personnel, adjacent
structures and ignition sources and meeting approval of the authority having jurisdiction.
(4)
Venting at ground level (grade) is not permissible.
(5)
The vent tube shall have a gas-tight connection to the container prior to venting.
(6)
All components of the vent tube shall be grounded.
(7)
The vent tube shall be constructed of Schedule 80 pipe of at least 2 in. diameter.
(8)
The vent tube shall not be provided with any feature that limits or obstructs gas flow.
(9)
The venting function shall be manually controlled.
(10)
Personnel performing venting shall do the following.
(A)
Use grounding to prevent static electric charge buildup.
(B)
Limit the rate of gas release from plastic-lined containers to a value not greater
than that specified by the container manufacturer.
(C)
Restrain containers during venting to prevent container movement.
bstructs gas flow.
(9)
The venting function shall be manually controlled.
(10)
Personnel performing venting shall do the following.
(A)
Use grounding to prevent static electric charge buildup.
(B)
Limit the rate of gas release from plastic-lined containers to a value not greater
than that specified by the container manufacturer.
(C)
Restrain containers during venting to prevent container movement.
(n)
If any RMFD fails to comply with any of the provisions of this regulation, a state inspector shall
seal it in such a manner as to prohibit its use, and it shall remain sealed until it complies with all of
the provisions of this regulation.
(1)
When an RMFD is brought back into compliance with this regulation, it must be placed
back in service by a state inspector or registered service agency.
(o)
All RMFDs shall comply with the minimum standards as prescribed by the applicable sections of
the codes adopted by this regulation except as modified or rejected by this regulation or by the
division.

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(p)
In addition to the requirements of Section 3-2 (a) through (e), all RMFDs dispensing natural gas in
terms of gallon equivalents used for motor vehicle fuel shall meet the requirements of CRS 8-20-
232.5.
(q)
All measuring devices installed on mobile refueling equipment including vehicles shall meet the
requirements of Section 3-2 (a) through (g), Section 3-3, and Section 3-4.
Section 3-3
Retail Dispensers for Compressed Natural Gas (CNG)
(a)
For the purposes of this regulation, compressed natural gas shall be identified by the term
“Compressed Natural Gas” or “CNG.” This is spelled out in the definition.
(b)
All CNG kept, offered or exposed for sale and sold at retail as a vehicle fuel shall be measured in
terms of mass (pounds or kilograms), and indicated in the gasoline gallon equivalent (GGE),
diesel gallon equivalent (DGE) units, or mass (pounds or kilograms).
ation, compressed natural gas shall be identified by the term
“Compressed Natural Gas” or “CNG.” This is spelled out in the definition.
(b)
All CNG kept, offered or exposed for sale and sold at retail as a vehicle fuel shall be measured in
terms of mass (pounds or kilograms), and indicated in the gasoline gallon equivalent (GGE),
diesel gallon equivalent (DGE) units, or mass (pounds or kilograms).
(c)
Each retail dispenser of CNG shall be labeled as “Compressed Natural Gas.”
(d)
All retail CNG dispensers shall be labeled with the gallon equivalent conversion factor in terms of
pounds or kilograms. The label shall be permanently and conspicuously displayed on the face of
the dispenser and shall have either the statement “1 CNG Gasoline Gallon Equivalent (GGE) is
equal to 5.660 lbs (2.567 kg) of CNG” or “1 CNG Diesel Gallon Equivalent (DGE) is equal to
6.384 lbs (2.895 kg) of CNG” consistent with the method of sale used.
(e)
CNG shall be dispensed into vehicle fuel containers with working pressures of 3,600 PSI (24,821
kPa). The dispenser shall be labeled 3,000 PSI (20,684 kPa), or 3,600 PSI (24,821 kPa)
corresponding to the pressure of the CNG dispensed by each fueling hose.
(f)
NFPA labeling requirements also apply. Refer to NFPA 52.
(g)
CNG fueling nozzles for use with vehicles less than 10,000 lbs (4,500kg) GVWR shall comply
with ANSI/AGA/CGA NGV 1.
(h)
Alternate nozzles than those described in Section 3-3 (g) used for fueling larger vehicles such as
buses and trucks shall be designed to prevent the connection of a lower service pressure vehicle
to a higher service pressure source.
Section 3-4
Retail Dispensers for Liquefied Natural Gas (LNG)
(a)
For the purposes of this regulation, liquefied natural gas shall be identified by the term “Liquefied
Natural Gas” or “LNG.”
(b)
All LNG kept, offered, or exposed for sale and sold at retail as a vehicle fuel shall be measured in
mass (pounds or kilograms) and indicated in diesel gallon equivalent (DGE) units or mass
(pounds or kilograms).
3-4
Retail Dispensers for Liquefied Natural Gas (LNG)
(a)
For the purposes of this regulation, liquefied natural gas shall be identified by the term “Liquefied
Natural Gas” or “LNG.”
(b)
All LNG kept, offered, or exposed for sale and sold at retail as a vehicle fuel shall be measured in
mass (pounds or kilograms) and indicated in diesel gallon equivalent (DGE) units or mass
(pounds or kilograms).
(c)
Each retail dispenser of LNG shall be labeled as “Liquefied Natural Gas.”
(d)
All retail LNG dispensers shall be labeled with the gallon equivalent conversion factor in terms of
pounds or kilograms. The label shall be permanently and conspicuously displayed on the face of
the dispenser and shall have the statement “1 LNG Diesel Gallon Equivalent (DGE) is equal to
6.059 lbs (2.748 kg) of LNG.”
(e)
LNG automotive fuel shall be labeled with its automotive fuel rating in accordance with 16 CFR
Part 306 (e.g. LNG 95% Methane).

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(f)
NFPA Labeling requirements also apply. Refer to NFPA 52.
Section 3-5
Product Quality
(a)
CNG shall meet the requirements of NFPA 52 Vehicular Gaseous Fuel Systems Code, for
product quality and odorization.
(b)
In addition to the requirements of Section 3-5 (a), CNG and LNG shall have a minimum methane
content of not less than 80%.
(c)
The BTU content of natural gas gallon equivalents shall meet the following requirements:
(1)
A CNG GGE shall contain a lower heating value of not less than 110,000 BTUs.
(2)
A CNG DGE shall contain a lower heating value of not less than 124,000 BTUs.
(3)
An LNG DGE shall contain a lower heating value of not less than 124,000 BTUs.
(d)
All equipment, including filters and strainers, used to prevent any foreign material, including
compressor oil or water, from being dispensed into a vehicle container, shall be periodically
serviced and maintained.
than 110,000 BTUs.
(2)
A CNG DGE shall contain a lower heating value of not less than 124,000 BTUs.
(3)
An LNG DGE shall contain a lower heating value of not less than 124,000 BTUs.
(d)
All equipment, including filters and strainers, used to prevent any foreign material, including
compressor oil or water, from being dispensed into a vehicle container, shall be periodically
serviced and maintained.
(e)
Any shipper of natural gas products to be used for retail motor fuel, who ships such product into
the state of Colorado or ships natural gas products from one point within the state to another
point within the state shall make records of such shipments available to the division upon request.
ARTICLE 4
DELIVERY INTO RETAIL NATURAL GAS SYSTEMS
Section 4-1
Delivery
(a)
No owner/operator of a retail natural gas fueling facility shall allow natural gas to be delivered into
the following:
(1)
An improperly installed container assembly or piping system installed at a natural gas
fueling facility.
(2)
A container installed at a natural gas fueling facility that does not have a proper ASME
nameplate.
ARTICLE 5
ACCIDENT REPORTS AND INVESTIGATIONS
Section 5-1
Reportable Accidents
(a)
Accidents, fires, explosions, injuries, damage to property or loss of life resulting from the storage
or dispensing of CNG or LNG at retail natural gas fueling facilities shall be reported to the division
within 24 hours after their occurrence.
(b)
Subsection (a) of this Section includes accidents resulting from the improper use or installation of
compression, storage and dispensing equipment or equipment failure at retail natural gas fueling
facilities.
(1)
The division may investigate such occurrences and shall maintain a written record of
findings, which shall be available for public examination.

CODE OF COLORADO REGULATIONS
7 CCR 1101-16
Division of Oil and Public Safety

11
Section 5-2
Reporting Requirements
per use or installation of
compression, storage and dispensing equipment or equipment failure at retail natural gas fueling
facilities.
(1)
The division may investigate such occurrences and shall maintain a written record of
findings, which shall be available for public examination.

CODE OF COLORADO REGULATIONS
7 CCR 1101-16
Division of Oil and Public Safety

11
Section 5-2
Reporting Requirements
(a)
The following persons are required to notify the division of an accident that meets any of the
criteria of Section 5-1.
(1)
Owner/operator or other representative of the retail natural gas fueling facility.
(b)
Accidents may be reported by telephone or email using the following information:
(1)
Telephone: 303-318-8547
(2)
Email: cdle_oil_inspection@state.co.us
(c)
The accident report shall include, at minimum, the following information.
(1)
The names of the owner/operator and person making the report and their telephone
numbers.
(2)
The date, time and location of the accident.
(3)
The number of fatalities and personal injuries.
(4)
All other significant facts known by the person making the report that are relevant to the
cause of the accident or extent of the damages.

## Nearby sections

- [7 CCR 1101-5 BOILER AND PRESSURE VESSEL REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_5.md)
- [7 CCR 1101-7 STANDARDS FOR PUBLIC SCHOOL BUILDINGS AND STRUCTURES](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_7.md)
- [7 CCR 1101-8 CONVEYANCE REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_8.md)
- [7 CCR 1101-9 EXPLOSIVES REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_9.md)
- [7 CCR 1101-12 AMUSEMENT RIDES AND DEVICES REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_12.md)
- [7 CCR 1101-14 STORAGE TANK REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_14.md)
- [7 CCR 1101-15 LIQUEFIED PETROLEUM GAS (LPG) REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_15.md)
- [7 CCR 1101-16 RETAIL NATURAL GAS (CNG/LNG) REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_16.md)
- [7 CCR 1101-17 RETAIL HYDROGEN FUELING REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_17.md)
- [7 CCR 1101-18 UNDERGROUND DAMAGE PREVENTION SAFETY COMMISSION REGULATIONS](https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_18.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_CO_CCR_7_CCR_1101_16. Check the current official text before relying on it. Not legal advice.