Missouri

Current Regulations: St. Louis opted in to federal RFG effective June 1, 1999 at retail. In response to a pipeline supply disruption, EPA announced, in letters dated March 17, April 3, May 5, and May 18, 2000, that it exercised enforcement discretion to temporarily permit the sale of conventional gasoline in the St. Louis RFG area.

EPA waived the federal RFG requirement temporarily in St. Louis, effective 9/27/05, to allow the use of conventional gasoline because of supply disruptions caused by Hurricane Rita; see letters dated 9/27/05 and 10/6/05.

Kansas City had a summer max. 7.2 psi RVP gasoline standard. This was reduced to 7.0 psi RVP gasoline before summer 2001. See Missouri's Code of State Regulations 10 CSR 10-2.330.

On July 11, 2002, the Governor signed SB 984 that bans MTBE in gasoline after July 1, 2005.

Signed by the Governor on July 6, 2006, HB 1270 requires 10 vol% agriculturally - derived ethanol in gasoline (excluding premium) effective 1/1/08, if a distributor can obtain ethanol at the same price or lower than unblended gasoline. See Missouri Revised Statutes Section 414.255. The rules for the ethanol mandate were issued by the Missouri Department of Agriculture at 2 CSR 110-3.010 and were published in the Missouri Register on 1/2/08. All terminals, except those that only sell RFG, shall offer for sale fuel ethanol-blended gasoline, fuel ethanol, and unblended gasoline.

Per Missouri Register on 4/15/14, 2 CSR 90-30.040 is amended to allow E15.

Missouri's Department of Agriculture, Weights and Measures Division, enforces ASTM D 4814 for gasoline and D 975 for diesel fuel; see 2 CSR 90-30.040 and Missouri Revised Statutes Section 414.032.

In a statement from the Missouri Department of Agriculture dated January 4, 2005 ("MDA Policy Regarding Diesel Lubricity Enforcement"), MO announced that it will suspend enforcement of the ASTM diesel lubricity requirement until May 1, 2005.  

In a multi-state letter dated 8/31/17, to address a fuel supply emergency caused by Hurricane Harvey, EPA waived RFG requirements and allowed 11.5 psi RVP gasoline throughout the state through September 15, 

Legislature: Introduced in February 2005, HB 597 would require that all diesel fuel (except for railroad locomotives) contain at least 2 vol% biodiesel on or before July 1, 2007.

HB 1369, introduced in February 2006, would require that all diesel fuel contain at least 2 vol% biodiesel by 1/1/08, except for railroad locomotives. Introduced in January 2006, SB 732 would require that all diesel fuel contain at least 2 vol% biodiesel after 1/1/07, except for railroad locomotives. HB 1445, introduced February 2006, would require that all diesel fuel contain at least 2 vol% biodiesel by 1/1/08.

Introduced in January 2007, SB 204 would require all diesel to contain at least 2% biodiesel by volume. As amended and passed by the Senate on 4/16/07, SB 204 would require 5 vol% biodiesel on 4/1/09, except for railroad on-track equipment and motors at an electric generation plant regulated by the Nuclear Regulatory Commission. HB 877, introduced in February 2007, would require at least 5 vol% biodiesel in all diesel on and after 1/1/09, unless it is more expensive than conventional diesel. Introduced in March 2007, HB 1252 would require 10 vol% ethanol in all gasoline effective 1/1/08 regardless of the market prices of ethanol and unblended gasoline.

SB 759 and SB 810, introduced in January 2008, would require at least 5 vol% biodiesel at retail on 4/1/10, except for railroad on-track equipment and motors at an electric generation plant regulated by the Nuclear Regulatory Commission. SB 759 was amended and passed by the Senate on 3/27/08; as amended, SB 759 would require biodiesel-blended fuel within 120 days of a determination by the MO Department of Agriculture that the price of biodiesel or biodiesel-blended fuel was, on average, less than or equal to the price of conventional diesel fuel for a period of one year, but in no case earlier than 1/1/10, with exceptions for railroad on-track equipment and motors at an electric generation plant regulated by the Nuclear Regulatory Commission. Introduced in March 2008, HB 2536 would repeal the ethanol mandate.

Introduced in January 2009, SB 29 would require 5% biodiesel within 90 days (but no earlier than 5/1/11 at terminals or 6/1/11 at retail) that the MO Department of Agriculture determines that the price of biodiesel or biodiesel-blended fuel, on average, is less than or equal to the price of diesel fuel for one year; diesel fuel sold to or used by railroad on-track equipment or motors located at an electric generating plant regulated by the Nuclear Regulatory Commission would be exempt. H 592, introduced in February 2009, would repeal the ethanol mandate after 12/31/10.

Last updated September 2017