Current Regulations: Federal RFG is required in Baltimore and seven counties (Calvert, Charles, Frederick, Kent, Montgomery, Prince George's and Queen Anne's), summer and winter.

In a letter dated 9/18/08, EPA waived the RFG requirements through 11:59 PM on 10/7/08 as a result of disruptions from Hurricanes Gustav and Ike.

In a letter dated 10/31/12, EPA issued a waiver to allow conventional gasoline in the RFG areas and to relax commlingling restrictions through 11/20/12 because of Hurricane Sandy.

Comptroller of the Treasury of MD regulations (Code of MD Regulations Title 03, Subtitle 03, Chapter 05 Motor Fuel Inspection) include a list of gasoline specifications at and diesel specifications at Comptroller's Motor Fuel Testing Lab enforces these regulations. 

In a letter dated 9/16/16, EPA waived the federal RFG requirement until 10/6/16. 

In a letter dated 11/3/16, EPA waived the federal RFG requirement through 11/23/16.

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

Legislature: HB 205, introduced in January 2005, would ban gasoline with more than 0.5 vol% MTBE. Introduced in January 2005, HB 388 would ban MTBE in gasoline gradually between 2006 and 2012. HB 496, introduced in February 2005, would ban gasoline with more than 0.5 vol% MTBE effective 1/1/10. Introduced in February 2005, HB 960 would ban gasoline with more than 0.5 vol% MTBE, ETBE or TAME effective 10/1/06, and would ban gasoline with MTBE, ETBE, or TAME effective 10/1/10.

Introduced in January 2006, HB 360 would ban gasoline with more than 0.5 vol% MTBE, effective 1/1/09. HB 522, introduced in February 2006, would ban gasoline with more than 0.5 vol% oxygenate concentration (i.e., MTBE, ETBE, TAME).

SB 261, introduced in January 2007, and HB 660, introduced in February 2007, would require at least 2% of total diesel to be biodiesel, effective 1/1/09 or when the Secretary of Agriculture determines that there is sufficient production in Maryland; this would increase to 5% on or before 1/1/12. As amended and signed by the Governor on 5/17/07 (Chapter 540), SB 261 does not include a biodiesel mandate; it established a Task Force on Renewable Alternative Fuels for one year to study incentives and policies.

Introduced in February 2009, HB 1379 and SB 555 would require at least 2 vol% biodiesel (mono-alkyl esters of long chain fatty acids derived from vegetable oil or animal fats) one year after annualized in-state production level reaches 5 million gallons, 5 vol% (10 million gallons), 10 vol% (15 million gallons), and 20 vol% (30 million gallons); renewable diesel (non-ester diesel fuel produced from nonpetroleum renewable resources) may be used to satisfy up to 25% of the biodiesel mandate; this would apply only if engine warranties will not be voided; gasoline would require at least 10 vol% cellulosic biofuel one year after annualized in-state production reaches 25 million gallons; renewable fuel may be used in place of cellulosic biofuel.

HB 1527 and SB 1104, both introduced in March 2010, would prohibit number 2 heating oil with a sulfur content exceeding 500 ppm on or after 7/1/14. HB 1527 was passed by the House on 4/2/10, and passed by the Senate with amendments on 4/9/10. SB 1104 was passed by the Senate on 4/5/10. These two bills failed because they did not pass an identical version. HB 827 and SB 569, both introduced in February 2010, would require biodiesel (FAME) in diesel at least one year after certification that the in-state biodiesel production level: B2 (12 million gallons), B5 (30 million gallons), B10 (55 million gallons), and B20 (110 million gallons). Renewable diesel may be used for up to 25% of the biodiesel content requirements. These biodiesel content requirements shall apply only if they do not void warranties. Cellulosic biofuel requirement, at least 5 vol% of gasoline, would be effective at least one year after certification of in-state cellulosic biofuel production level of 100 million gallons; renewable fuel can meet up to 25% of this cellulosic biofuel requirement.

Proposed State Actions: The Secretary of the MD Department of the Environment and representatives of ten other states signed a Letter of Intent, dated 12/31/08, to analyze low carbon fuel supply options and develop a framework for a regional Low Carbon Fuel Standard in the Northeast/Mid-Atlantic region. Governor O'Malley and the governors of 10 NE/MA states signed a Memorandum of Understanding dated 12/30/09 for the development of a regional LCFS. 

Last updated August 2017