Missouri Code of State Regulations › Title 2 - DEPARTMENT OF AGRICULTURE › Division 90 - Weights, Measures and Consumer Protection › Chapter 30 - Petroleum Inspection › Section 2 CSR 90-30.040 - Quality Standards for Motor Fuels

Current through Register Vol. 49, No. 14, July 15, 2024
The Missouri Department of Agriculture is amending
				  subsections (1)(C) and (4)(C) to reflect changes made by the U.S. Environmental
				  Protection Agency (USEPA).
PURPOSE: USEPA streamlined and modernized 40 CFR part
				  80 fuel quality regulations to minimize the implementation burden associated
				  with them while still ensuring that the fuel quality standards previously
				  established under the Clean Air Act continue to be met in real-world use. USEPA
				  transferred the relevant part 80 provisions into a new set of regulations in 40
				  CFR part 1090. This rule change by the USEPA was effective January 1, 2021.
				  Missouri regulation 2 CSR 9030.040 subsections (1)(C) and (4)(C) currently
				  reference 40 CFR part 80 and must be changed to reference the new USEPA
				  regulation at 40 CFR part 1090. This amendment is necessary to ensure that the
				  Department of Agriculture continues to reference the appropriate section in
				  USEPA regulations which the department uses to enforce volatility and labeling
				  regulations for gasoline containing nine percent (9%) to fifteen percent (15%)
				  ethanol.
(1) Regulation
				Regarding Quality of Motor Fuels. The following fuels when sold, offered for
				sale, or when used in this state shall meet the following requirements:
(A) Motor Fuels. Any liquid fuel product used
				for the generation of power in an internal combustion engine. Note: liquefied
				petroleum gas which is composed predominantly of propane, propylene, butanes
				(normal or isobutanes) and butylenes are not considered as motor fuels in
				Chapter 414, RSMo and this regulation;
(B) All automotive gasoline shall meet the
				requirements set in ASTM D4814;
(C)
				All automotive gasoline containing oxygenated additives shall meet the
				requirements set in ASTM D4814 and the following requirements:
1. When methanol is blended in quantities
				greater than three tenths (0.3) volume percent, the finished blend shall
				contain at least an equal amount of butanol or higher molecular weight
				alcohol;
2. When gasoline contains
				nine percent (9%) or up to and including fifteen percent (15%) ethanol, a vapor
				pressure tolerance not exceeding one pound per square inch (1.0 psi) is allowed
				in accordance with U.S. EPA per
				40 CFR
				1090.215(b)(2) from June 1
				through September 15;
3. When
				gasoline contains one percent (1%) or up to and including fifteen percent (15%)
				ethanol, a one pound per square inch (1.0 psi) vapor pressure tolerance is
				allowed for volatility classes A, B, C, and D from September 16 through May
				31;
4. When gasoline contains one
				percent (1%) or up to and including fifteen percent (15%) ethanol, a one-half
				pound per square inch (0.5 psi) vapor pressure tolerance is allowed for
				volatility class E from September 16 through May 31; and
5. The vapor pressure exceptions in
				paragraphs (1)(C)2., 3., and 4. of this rule will remain in effect until ASTM
				incorporates changes to the vapor pressure maximums for ethanol
				blends;
(D) All gasoline
				or gasoline-oxygenate blends classified as leaded shall contain a minimum of
				five hundredths (0.05) grams of lead per United States gallon;
(E) The minimum (R+M)/2 octane rating of
				automotive gasoline grades and gasoline- oxygenate blended grades shall be no
				less than the following:
1. Regular Unleaded
				and 87;
2. Premium, Super, Supreme
				91; and
(F) The motor
				octane number shall not be less than eighty-two (82) for regular unleaded
				gasoline.