Colorado Revised Statutes Title 8. Labor and Industry § 8-20-201. Definitions

(1) “Alternative fuel” means a motor fuel that combines petroleum-based fuel products with renewable fuels.

(1.1) “Antiknock index” or “AKI” means the arithmetic average of the research octane number (RON) and motor octane number (MON): AKI = (RON+MON)/2. This value is called by a variety of names in addition to antiknock index including: Octane rating, posted octane, and (R+M)/2 octane.

(1.2) “ASTM” means ASTM international, formerly known as the American society for testing and materials.

(1.3) “British thermal unit” 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.

(1.5) “Department” means the department of labor and employment, division of oil and public safety.

(1.7) “DOT” means the United States department of transportation.

(2) “Fuel products” means all gasoline; aviation gasoline; aviation turbine fuel; diesel; jet fuel; fuel oil; biodiesel; biodiesel blends; kerosene; all alcohol blended fuels; liquefied petroleum gas; gas or gaseous compounds, including hydrogen; natural gas, including compressed natural gas and liquefied natural gas; and all other volatile, flammable, or combustible liquids, that are produced, compounded, and offered for sale or used for the purpose of generating heat, light, or power in internal combustion engines or fuel cells, for cleaning, or for any other similar usage.

(3) “Gross gallons” as applied to fuel and petroleum products means units of two hundred thirty-one cubic inches measured at storage or metered temperature.

(3.5) “Hg” means the element mercury.

(4) “Lubricants” means petroleum products used for the purpose of reducing friction between moving surfaces.

(5) “Net gallons” as applied to fuel and petroleum products means units of two hundred thirty-one cubic inches measured at standard temperature.

(5.3) “NFPA” means the national fire protection association.

(5.5) “NIST” means the national institute of standards and technology.

(6) “Person” means an individual, trust or estate, partnership, association, joint stock company or corporation, and any receiver appointed by law.

(7) “Proved” as applied to measuring devices means the act of having verified the accuracy of meters used to measure fuel and petroleum products.

(8) “Prover” as applied to determination of meter accuracy means a calibrated volumetric receiver or a mechanical positive displacement device.

(8.5) “Renewable fuel” means a motor vehicle fuel that is produced from plant or animal products or wastes, as opposed to fossil fuel sources.

(9) “Standard temperature” as applied to fuel and petroleum products means sixty degrees Fahrenheit.

(10) “Temperature compensation” as applied to liquid measure of fuel and petroleum products means adjustment of gallons measured at storage or metered temperature to the standard temperature.