{"data":{"id":"us-co/c.r.s.-8-20-204","jurisdiction":"us-co","citation":"C.R.S. § 8-20-204","heading":"Specifications - classes I, II, and III - rules.","body":"(1) (a) Except as described in subsection (1)(b) of this section, all products in classes I, II, and III must comply with the most current applicable specifications of ASTM, which are found in section 5 of that organization's publication \"Petroleum Products, Lubricants, and Fossil Fuels\" and supplements to the publication or revisions of the publication as may be designated by ASTM, except as modified or rejected by this article 20 or any rule adopted pursuant to this article 20. If gasoline is blended with ethanol, the ASTM D 4814 specifications apply to the base gasoline prior to blending. Blends of gasoline and ethanol must not exceed the ASTM D 4814 vapor pressure standard; except that, if the ethanol is blended at nine percent or higher but not exceeding ten percent, the blend may exceed the ASTM D 4814 vapor pressure standard by no more than 1.0 PSI. Class I products shall not be blended at a retail location with products commonly and commercially known as casinghead gasoline, absorption gasoline, condensation gasoline, drip gasoline, or natural gasoline.\n\n(b) In order to ensure access to fuel products for communities in Colorado, the director of the division of oil and public safety may adopt a rule or issue policy guidance that provides exceptions to specific requirements established in an ASTM standard described in subsection (1)(a) of this section to address consumer protection, pricing, supply networks, or other factors not considered by ASTM when formulating the standard.\n\n(2) to (4) Repealed.\n\n(5) To further avoid the perpetration of fraud upon the users and purchasers of motor fuel offered for sale for highway vehicle use, the artificial coloring of such motor fuel is absolutely prohibited, except in motor fuel having a research octane rating of eighty-eight or better after coloring, as determined by the ASTM's research method.\n\n(6) The sale of any product under any grade name that indicates to the purchaser that it is of a certain automotive fuel rating or ASTM grade shall not be permitted unless the automotive fuel rating or grade indicated in the grade name is consistent with the value and meets the applicable requirements of ASTM. The AKI shall not be less than the AKI posted on the product dispenser or as certified on the invoice, bill of lading, shipping paper, or other documentation.","path":["Title 8 - LABOR AND INDUSTRY","Article 20 - Fuel Products","Part 2 - FUEL PRODUCTS"],"source_url":"https://olls.info/crs/crs2026-title-08.htm","current_through":"Colorado Revised Statutes 2026","vintage":"","retrieved_at":"2026-09-14T18:37:45Z","sha256":"0765a406c5a057c20ed834e04e8a5b36bc55dcb7d15d3ec585f2809711adc995","source_id":"us-co","stale":false,"prev":"us-co/c.r.s.-8-20-203","next":"us-co/c.r.s.-8-20-204.5"},"notice":"GroundRules: Original legal text. Not legal advice."}