1. A. Gasoline and gasoline-oxygenate blends sold, offered for sale, or distributed in Louisiana shall meet the following requirements.

   1. 1. The latest revision of ASTM D 4814, "Standard Specification for Automotive Spark-Ignition Engine Fuel," as approved and published by ASTM International, except that volatility standards for unleaded gasoline blended with ethanol shall not be more restrictive than those adopted under the rules, regulations, and Clean Air Act waivers of the U.S. Environmental Protection Agency.¹ Gasoline blended with ethanol shall be blended under any of the following three options:

      1. a. the base gasoline used in such blends shall meet the requirements of the latest revision of ASTM D 4814; or
      2. b. the blend shall meet the requirements of the latest revision of ASTM D 4814; or
      3. c. the base gasoline used in such blends shall meet all the requirements of the latest revision of ASTM D 4814 except distillation, and the blend shall meet the distillation requirements of the ASTM specification.
   2. 2. Blends of gasoline and ethanol shall not exceed the ASTM D 4814 vapor pressure standard by more than 1.0 pounds per square inch (psi).
   3. 3. The Antiknock Index (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.
   4. 4. The minimum motor octane number shall not be less than 82 for gasoline with an AKI of 87 or greater.
   5. 5. Gasoline and gasoline-oxygenate blends sold as "leaded" shall contain a minimum of 0.013 gram of lead per liter (0.05 g per U.S. gal).

   6. 6. Gasoline and gasoline-oxygenate blends sold as "lead substitute" gasoline shall contain a lead substitute which provides protection against exhaust valve seat recession equivalent to at least 0.026 gram of lead per liter (0.10 g per U.S. gal).

      1. a. Upon the request of the commissioner, the lead substitute additive manufacturer shall provide documentation to the commissioner that demonstrates that the treatment level recommended by the additive manufacturer provides protection against exhaust valve seat recession equivalent to or better than 0.026 gram per liter (0.1 g per U.S. gal) lead. The commissioner may review the documentation and approve the lead substitute additive before such additive is blended into gasoline. This documentation shall consist of:

         1. i. test results as published in the Federal Register by the EPA Administrator as required in Section 211(f)(2) of the Clean Air Act; or
         2. ii. until such time as the EPA Administrator develops and publishes a test procedure to determine the additive's effectiveness in reducing valve seat wear, test results and description of the test procedures used in comparing the effectiveness of 0.026 gram per liter lead and the recommended treatment level of the lead substitute additive shall be provided.
   7. 7. Blending. Leaded, lead substitute, and unleaded gasoline-oxygenate blends shall be blended according to the EPA "substantially similar" rule or an EPA waiver for unleaded fuel.
   8. 8. Gasoline or gasoline-oxygenate blends sold or delivered to consumers in Louisiana shall meet all the foregoing specifications and, in addition, shall have on all retail pumps a posted Antiknock Index. The Antiknock Index of the gasoline or gasoline-oxygenate blend shall not be less than the Antiknock Index posted on the pump.

¹For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. Copies of referenced ASTM standards may be obtained from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, Pa 19428-2959, Tel: (610) 832-9500, Fax: (610) 832-9555 or may be inspected at the Division of Weights and Measures, Department of Agriculture and Forestry, 5825 Florida Blvd., Baton Rouge, LA 70806.

Authority Note

AUTHORITY NOTE: Promulgated in accordance with R.S. 3:4671, 4673, 4680, and 4681.

Historical Note

HISTORICAL NOTE: Promulgated by the Department of Agriculture and Forestry, Office of Agro-Consumer Services, Division of Weights and Measures, LR 31:29 (January 2005), amended by the Department of Agriculture and Forestry, Office of Agro-Consumer Services, LR 34:2549 (December 2008).