Summer Federal Phase II RVP: Max. 7.8 psi RVP gasoline was required in six counties (Davidson, Rutherford, Shelby, Sumner, Williamson and Wilson) in former 1 hr. ozone nonattainment areas (Nashville and Memphis). Max. 9.0 psi RVP gasoline is required elsewhere. The summer maximum RVP limitation shall be 1 psi higher for gasoline blends with 10 vol% ethanol per Clean Air Act section 211(h)(4).

In a letter dated 9/11/08, EPA issued an emergency waiver of the 7.8 psi RVP gasoline requirements in the Nashville area through 9/15/08 as a result of the disruption in the supply of fuel caused by Hurricane Gustav. The Agency also temporarily waived the requirement that ethanol/gasoline blends must have 9-10 vol% ethanol to qualify for the one psi RVP allowance. EPA waived the summer RVP gasoline requirements throughout the state in a letter dated 9/11/08.

EPA, in a letter dated 8/11/11, waived the 7.8 psi RVP requirement for gasoline sold in Shelby County through 8/31/11. Under this temporary waiver, regulated parties may sell or distribute gasoline with a maximum RVP of 9.0 psi (10.0 psi if the gasoline contains 10% ethanol) in Shelby County.

On June 6, 2014, EPA and TN issued emergency waivers of the 7.8 psi RVP requirement for Shelby County (including Memphis) through June 26, 2014.  Max. 9.0 psi RVP (10.0 psi if 9-10 vol% ethanol) is required.

In a letter dated 9/14/16, EPA waived 7.8 psi RVP in the Nashville area temporarily, expiring at the end of 9/15/16.  Under this temporary waiver, maximum 9.0 psi RVP gasoline (10.0 psi RVP if the gasoline contains 9-10% ethanol) may be sold.  

EPA approved the relaxation of federal RVP for summer gasoline in the Memphis area from 7.8 to 9.0 psi at 82 FR 60675 (12/22/17). 

EPA relaxed federal RVP for summer gasoline in the Nashville area from 7.8 to 9.0 psi at 82 FR 26354 (6/7/17). 

In a multi-state letter dated 8/30/17, to address a fuel supply emergency caused by Hurricane Harvey, EPA allowed 11.5 psi gasoline throughout the state through September 15.  This was affirmed in another multi-state waiver dated 8/31/17. 

Current Regulations: The Tennessee Department of Agriculture, Division of Regulatory Services, enforces the latest versions of ASTM D 4814 for gasoline and ASTM D 975 for diesel fuel; see Tennessee Rules and Regulations 0008-5-12-.02. Also see TN Code 47-18-1304.

Effective March 10, 2005, the Commissioner of the TN Department of Agriculture issued a Temporary Waiver of the 2005 ASTM D 975 diesel lubricity standard until September 10, 2005.

The TN Department of Agriculture, Regulatory Services Division, filed emergency rules on ethanol blends of gasoline and maintaining motor fuel quality on 9/5/07 and they were effective through 2/17/08. A hearing was held on 11/16/07 and permanent amendments became effective on 2/13/08.

Signed by Governor on 6/25/09, amended SB 1931 (Public Chapter No. 523) requires all refiners and suppliers to make available gasoline or gasoline blending stock that has not been blended with, but is suitable for blending with ethanol. Diesel sold by refiners or suppliers may contain up to 5% biodiesel. Refiners and suppliers shall not be liable for fines, penalties, injuries, or damages arising from subsequent blending. This was effective on 1/1/10.

Legislature: Introduced in February 2001, HB 496 and SB 555 would ban MTBE in gasoline no later than December 31, 2003.

HB 871 and SB 1275, introduced in February 2003, would require that all gasoline contain 10 vol% ethanol by July 1, 2003.

HB 2667 and SB 2751 (both introduced in January 2004) would require that all gasoline in Tennessee contain at least 5 vol% ethanol by July 1, 2005. SB 2817 (introduced in January 2004) and HB 3133 (introduced in February 2004) would ban off-road high sulfur diesel fuel effective July 1, 2004.

HB 846 and SB 454, both introduced in February 2005, would require all gasoline to contain at least 5 vol% ethanol, effective July 1, 2006. 

Last updated December 2017