Current Regulations: Public Act No. 00-175, signed by the Gov. on 6/1/2000, required the State to develop a plan to eliminate MTBE in gasoline effective October 1, 2003 and seek a waiver from EPA to discontinue the use of MTBE.

Public Act No. 03-122, signed by the Governor on June 3, 2003, moved the effective date for the MTBE ban from October 1, 2003 to January 1, 2004 if New York maintains January 1, 2004 as the effective date for its MTBE ban; otherwise, the effective date in Connecticut will be July 1, 2004. In addition, a de minimis level of 0.5 vol% MTBE is permitted. See section 22a-450a of the Connecticut General Statutes, as amended in 2003. New York did maintain January 1, 2004 as the effective date for its MTBE ban.

Federal RFG is required throughout the state, summer and winter.

The Connecticut Department of Consumer Protection, Food and Standards Division, enforces ASTM D 4814 for gasoline and ASTM D 975 for diesel fuel. See section 14-327d-2 of the Regulations of Connecticut State Agencies.

In a letter dated December 9, 2004, the Governor of CT announced approval of proposed emergency regulations to delay implementation of the new ASTM diesel lubricity standard by up to 12 months. The Division of Food and Standards in the CT Department of Consumer Protection announced that it has no intention of implementing the revised ASTM Standard D 975 before July 1, 2005, subject to passage of the normalized regulations, and will most likely not implement the standard formally until January 1, 2006.

Signed by the Governor on 6/6/06, Substitute SB 193 (Public Act 06-143) caps the sulfur content of number two heating oil in CT (after the last of NY, MA, and RI) to 1,500 ppm, to 1,250 ppm, and to 500 ppm. In addition, it caps the sulfur content of number two off-road diesel to 500 ppm after the last of NY, MA and RI.

Substitute SB 382 (Public Act No. 10-74 as of 5/12/10) requires number 2 heating oil not to exceed 50 ppm sulfur by 7/1/11 and 15 ppm sulfur by 7/1/14; in addition, all heating oil shall be a biodiesel blend containing not less than 2% biodiesel by 7/1/11, 5% by 7/1/12, 10% by 7/1/15, 15% by 7/1/17, and 20% by 7/1/20 (contingent on an assessment of sufficient - at least 50% of the mandated volume - in-state biodiesel production, and similar action by NY, MA and NH).  See Chapter 296, sections 16a-21a and 16a-21b. 

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

On 12/24/13, the Dept. of Energy and Environmental Protection revised RCSA Section 22a-174-19b; it includes distillate fuel oil sulfur standards: 500 ppm by 7/1/14 and 15 ppm by 7/1/18.  

In a multi-state letter dated 8/31/17, to address a fuel supply emergency caused by Hurricane Harvey, EPA waived the RFG requirements and allowed 11.5 psi RVP gasoline throughout the state through September 15.  In a multi-state letter dated 9/7/17, EPA extended the RFG waiver through September 26.  

Legislature: SB 661, introduced in March 2006, would repeal the MTBE ban, effective 10/1/06. 

Introduced in January 2013, HB 5907 would require posting diesel cetane ratings on each pump and a minimum biodiesel blend for all highway diesel fuel. 

HB 5242, introduced in January 2015, would require the CT Dept. of Energy and Environmental Protection, in consultation with the Dept. of Public Health, to study the feasibility of eliminating/banning ethanol in gasoline. 

Proposed State Actions: In a letter dated September 29, 2004, the Commissioner of the CT Department of Environmental Protection requested a waiver from EPA of the oxygen content requirement for federal RFG. On June 2, 2005, EPA announced that it has denied this request; EPA found that CT did not submit the technical data necessary for the Agency to determine what impact the waiver would have on emissions and air quality. The federal energy bill (Public Law 109-58), signed by the President on 8/8/05, eliminated the oxygen content requirement for federal RFG effective in May 2006; see 71 FR 26691 (5/8/06).

The Commissioner of the CT Department of Environmental Protection 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 Rell and governors of 10 NE/MA states signed a Memorandum of Understanding dated 12/30/09 for the development of a regional LCFS.

Last updated September 2017