Tenn. Comp. R. & Regs. 0080-05-12-.02 - STANDARD SPECIFICATIONS

(1) Gasoline and Gasoline-Oxygenate Blends (as set forth in this regulation) shall meet the following requirements:

(a) The most recent version of ASTM D4814, "Standard Specification for Automotive Spark Ignition Engine Fuel" except for the permissible offsets for ethanol blends as provided in section 0080-05-12-.02(1)(b).

(b) Gasoline-Ethanol Blends - When gasoline is blended with ethanol, the ethanol shall meet the latest version of ASTM D4806, "Standard Specification for Denatured Fuel Ethanol for Blending with Gasoline for Use as Automotive Spark-Ignition Fuel" and the final blend shall meet the latest version of ASTM D4814 "Standard Specification for Automotive Spark-Ignition Engine Fuel" with the following permissible exceptions. The maximum vapor pressure shall not exceed the ASTM D4814 limits by more than:

1. 1.0 psi for blends containing 9 to 10 volume percent ethanol from June 1 through September 15, in accordance with 40 CFR Part 80.27(d);

2. 1.0 psi for blends containing one or more volume percent ethanol for volatility Classes A, B, C and D from September 16 through May 31;

3. 0.5 psi for blends containing one or more volume percent ethanol for volatility Class E from September 16 through May 31.

4. Notwithstanding vapor pressure exemptions authorized under this rule, the department adopts as a substitute standard any provision of federal law that is in conflict with an ASTM standard.

(c) The maximum concentration of oxygenates contained in gasoline-oxygenate blends shall be those permitted by the EPA under Section 211 of the Clean Air Act and applicable waivers. All conditions stipulated in the EPA waivers also apply. Gasoline oxygenate content specifications based on vehicle performance and operability that are stipulated within ASTM D4814 will govern when those limits are more restrictive than those established by the EPA for purposes of controlling emissions and the durability of emissions related equipment.

(d) Minimum Antiknock Index (AKI) - 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.

(e) Minimum Motor Octane Number - the minimum motor octane number shall not be less than 82 for gasoline or gasoline-oxygenate blends.

(f) Minimum Lead Content to Be Termed (Leaded) - 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).

(g) Lead Substitute Gasoline - 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. Documentation of Exhaust Valve Seat Protection - 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/gal) lead.

2. The Commissioner may review the documentation and approve the lead substitute additive before such additive is blended into gasoline. This documentation shall consist of:

(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;

(ii) Until such a 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.

(h) 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.

(2) Diesel Fuel shall meet the most recent version of ASTM D975, "Standard Specification for Diesel Fuel Oils."

(a) Diesel shall have a maximum haze rating of 2 per ASTM D4176 "Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)" at 25°C (77°F). This requirement will not apply to any bulk fuel storage tank whereby the product contained therein is being reconditioned and withheld from sale. At such time any reconditioned product is offered for sale, the haze rating standard stipulated in this section shall apply.

(b) Premium Diesel Fuel - All diesel fuels identified on retail dispensers, bills of lading, invoices, shipping papers, or other documentation with terms such as premium, super, supreme, plus, or premier must conform to the following requirements:

1. Cetane Number - A minimum cetane number of 47.0 as determined by ASTM Standard Test Method D613.

2. Low Temperature Operability - A cold flow performance measurement which meets the ASTM D975 tenth percentile minimum ambient air temperature charts and maps by either ASTM Standard Test Method D2500 (Cloud Point) or ASTM Standard Test Method D4539 (Low Temperature Flow Test, LTFT). Low temperature operability is only applicable October 1 - March 31 of each year.

3. Thermal Stability - A minimum reflectance measurement of 80 percent as determined by ASTM Standard Test Method D6468 (180 minutes, 150°C [302°F]).

4. Lubricity - A maximum wear scar diameter of 520 microns as determined by ASTM D6079. If an enforcement jurisdiction's single test of more than 560 microns is determined, a second test shall be conducted. If the average of the two tests is more than 560 microns, the sample does not conform to the requirements of this part.

(3) Aviation Turbine Fuels shall meet the most recent version of the following standards, as applicable:

(a) ASTM D1655, "Standard Specification for Aviation Turbine Fuels".

(b) ASTM D7223, "Standard Specification for Aviation Certification Turbine Fuel".

(c) ASTM D7566, "Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons".

(d) ASTM D6615, "Standard Specification for Jet B Wide-Cut Aviation Turbine Fuel".

(4) Aviation Gasoline shall meet the most recent version of the following standards, as applicable:

(a) ASTM D910, "Standard Specification for Aviation Gasoline".

(b) ASTM D6227, "Standard Specification for Grades UL 82 and UL87 Unleaded Aviation Gasoline".

(c) ASTM D7547, "Standard Specification for Unleaded Only Aviation Gasoline".

(5) Fuel Oils shall meet the most recent version of ASTM D396, "Standard Specification for Fuel Oils".

(6) Kerosene (Kerosine) shall meet the most recent version of ASTM D3699, "Standard Specification for Kerosine".

(7) Ethanol intended for blending with gasoline shall meet the most recent version of ASTM D4806, "Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel".

(8) Liquefied Petroleum (LP) Gases Intended for Use as Motor Fuel shall meet ASTM D1835, "Standard Specification for Liquefied Petroleum (LP) Gases".

(9) Ethanol Flex Fuel blends are covered by one of two ASTM standards based upon the ethanol concentration of the blend:

(a) Ethanol Flex Fuel blends containing 51 to 83 volume percent ethanol shall meet the latest version of ASTM D5798, "Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines"; and

(b) Ethanol Flex Fuel Blends containing 16 to 50 volume percent ethanol shall be blended, stored and conveyed for consumption in accordance with the recommendations and requirements included in the latest version of ASTM D7794, "Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines". ASTM D4814 does not apply to this classification of fuel.

(10) M85 Fuel Methanol shall meet the most recent version of ASTM D5797, "Standard Specification for Fuel Methanol M70-M85 for Automotive Spark-Ignition Engines."

(11) Racing Gasoline shall meet the following requirement:

(a) "Minimum Antiknock Index (AKI)" 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.

(b) The minimum product specifications shall be those as declared by the manufacturer's product specifications. Upon the request of the Commissioner, each conveyor of racing gasoline shall provide the Department with a copy of the manufacturer's product specifications.

(12) Biodiesel (Biodiesel Fuel Blend Stock) intended for blending with diesel fuel shall meet the most recent version of ASTM D6751, "Standard Specification for Biodiesel Fuel (B100) Blend Stock for Distillate Fuels." All biodiesel blend stock shall be at least 99% biodiesel (no more than 1% diesel fuel). Any blend stock less than 99% biodiesel shall not be used as a commercial blend stock for biodiesel blends without the permission of the Commissioner.

(13) Biodiesel Blends and Diesel Fuel Containing Biodiesel - All blends of biodiesel and diesel fuels shall be blended with biodiesel blend stock that meets the requirement of 0080-05-12-.02(12), and also shall meet the following requirements:

(a) Blends that contain less than or equal to 5% by volume biodiesel must meet the latest version of ASTM D975, "Standard Specification for Diesel Fuel Oils" and shall be sold as diesel fuel. In addition, the fuel shall have a maximum haze rating of 2 per ASTM D4176 "Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)" at 25°C (77°F). This requirement will not apply to any bulk fuel storage tank whereby the product contained therein is being reconditioned and withheld from sale. At such time any reconditioned product is offered for sale, the haze rating standard stipulated in this section shall apply;

(b) Blends greater than 5% by volume biodiesel and less than or equal to 20% by volume biodiesel shall meet the most recent edition of ASTM D7467 "Standard Specification for Diesel Fuel Oil, Biodiesel Bend (B6 to B20)". In addition, the fuel shall have a maximum haze rating of 2 per ASTM D4176 "Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)" at 25°C (77°F). This requirement will not apply to any bulk fuel storage tank whereby the product contained therein is being reconditioned and withheld from sale. At such time any reconditioned product is offered for sale, the haze rating standard stipulated in this section shall apply;

(c) Biodiesel Conveyed at Public Retail Sale Points - Biodiesel conveyed at retail sale points that are available to the general consuming public shall not exceed 20% by volume.

(14) Hydrogen Fuel for Fuel Cell Vehicles shall meet the most recent edition of SAE J2719 "Hydrogen Fuel Quality for Fuel Cell Vehicles". At such time that ASTM establishes a standard for Hydrogen fuel, the most recent edition of the ASTM standard specification(s) shall replace SAE J2219 as the Standard Specification for Hydrogen Fuel Quality.

(15) Compressed Natural Gas (CNG) shall meet the most recent edition of SAE J1616, "Recommended Practice for Compressed Natural Gas Vehicle Fuel". At such time that ASTM develops applicable standards for natural gas, those standards shall prevail as rule.

(16) Liquefied Natural Gas (LNG) Vehicle Fuel shall meet the most recent edition of SAE J2699 "Liquified Natural Gas (LNG) Vehicle Fuel". At such time that ASTM develops applicable standards for natural gas, those standards shall prevail as rule.

(17) Butanol for Blending with Gasoline shall meet the most recent edition of ASTM D7862, "Standard Specification for Butanol Blending with Gasoline for Use as Automotive Spark-Ignition Engine Fuel".

(18) Diemethyl Ether for Fuel Purposes shall meet the most recent edition of ASTM D7901 "Standard Specification for Dimethyl Ether for Fuel Purposes."

(19) Fuel Additives applied to products included in these regulations must be used in accordance with the definition of a fuel additive as stated in section 0080-05-12-.01 Definitions.

Notes

Tenn. Comp. R. & Regs. 0080-05-12-.02

Original rule filed April 6, 1990; effective May 21, 1990. Amendment filed August 31, 2000; effective December 29, 2000. Amendments filed June 22, 2005; effective October 28, 2005. Emergency rule filed April 27, 2006; expired on October 9, 2006. On October 10, 2006, rule reverted to status in effect October 28, 2005. Amendment filed February 6, 2007; effective June 28, 2007. Public necessity rule filed September 5, 2007; effective through February 17, 2008. Amendments filed November 30, 2007; effective February 13, 2008. Repeal and new rule filed September 4, 2014; effective December 3, 2014. Amendment filed March 5, 2020; effective 6/3/2020.

Authority: T.C.A. §§ 4-3-203, 47-18-1304, and 47-18-1309.