Regulatory Announcement

Notice of Proposed Rulemaking for 

Reformulated Gasoline (RFG) 

Requirements 

The U.S. Environmental Protection Agency (EPA) is requesting 

comment on options to revise the reasonable date on which we 

determine the applicability of RFG to make them relevant for areas 

that EPA redesignated to attainment for the 1-hr ozone standard prior 

to its revocation. 

Summary of the Notice of Proposed Rulemaking 

EPA is seeking comment on two options to address whether a specific type of ozone 

nonattainment area would remain a federal RFG covered area after it is no longer 

classified as a severe area based upon redesignation to attainment for the 1-hour ozone 

National Ambient Air Quality Standard (NAAQS) prior to revocation of the 1-hour 

NAAQS. This area is also designated as an ozone nonattainment area for the 8-hour 

NAAQS. Atlanta is the only area that would fall within the scope of this proposal. 

Key Elements 

•	 Under the first option, Atlanta would be required to use RFG at least until it 

is redesignated to attainment for the 8-hour NAAQS. 

•	 Under the second option, the determining factor for Atlanta would be the 

date of revocation of the 1-hour NAAQS. The use of this effective date 

would mean that if RFG was a mandatory obligation on that date, then the 

obligation would continue on after revocation of the 1-hour NAAQS. If RFG 

was not a mandatory obligation on that date then it would not continue after 

the date of revocation. EPA would interpret CAA section 211(k)(10)(D) 

such that an area would no longer be considered an RFG area after redesignation to attainment for the 1-hour NAAQS, if the State requests removal 

of RFG and demonstrates that removal would not result in loss of emission 

reductions relied upon in the State attainment plan. 

Office of Transportation and Air Quality 

EPA-420-F-06-053 

2006 
Regulatory Announcement 

 

•	 Under the first option, Atlanta would need to adopt RFG, and under the second option, 

Atlanta would not need to adopt RFG subject to the required demonstration. 

Background 

The proposed rule follows previous EPA action to replace the 1-hour ozone standard with a 

more protective 8-hour standard. To date, EPA has issued two rules that clarify the extent to 

which Clean Air Act obligations that existed under the 1-hour ozone standard continue in effect 

under the 8-hour standard. These rules are the Phase 1 implementation rule, and the Phase 2 

implementation rule. 

In the Phase 1 rule, EPA addressed two interrelated key issues regarding the transition from the 

1-hour ozone NAAQS to the 8-hour ozone NAAQS. First, at what time the 1-hour NAAQS 

would be revoked (i.e., no longer apply). Second, what protections would remain in place to 

ensure that, once the 1-hour NAAQS was revoked, air quality would not degrade and that 

progress toward attainment would continue as areas transition frol implementing the 1-hour 

NAAQS to implementing the 8-hour NAAQS. 

In the proposed Implementation rule, EPA identified federal RFG as an applicable requirement. 

In the final rule, however, EPA did not include RFG in the list of applicable requirements. EPA 

instead clarified that RFG is required under a Federal program, and thus differs significantly from 

the programs on the final list of applicable requirements, which are developed and adopted by 

States for inclusion in the state implementation plan (SIP). EPA recognized that various issues 

exist regarding the scope and applicability of the RFG program during and after implementation 

of the 8-hour ozone NAAQS that need further clarification. EPA stated that we were still considering how to treat RFG and that we would address these issues in an action separate from the 

Phase 1 rule. Thus, EPA did not include RFG in the list of applicable requirements in the Phase 

1 Rule, and EPA made no decision at that time concerning RFG treatment in the transition to 

the 8-hour NAAQS. 

In the Phase 2 Implementation Rule, EPA specified that the nine original mandatory RFG 

covered areas, as well as mandatory “bump-up” areas that will no longer be classified as severe 

based solely on the revocation of the 1-hour NAAQS, will remain covered areas at least until 

they are redesignated to attainment for the 8-hour NAAQS. EPA relied on an approach, similar 

to that in the Phase 1 rule, of no loss of emission reductions relied upon in the State attainment 

plan. However, EPA did not address in that Phase 2 final rule whether RFG would continue to 

be required in bump-up areas that are designated nonattainment for the 8-hour NAAQS, but 

are no longer classified as severe based on a redesignation to attainment for the 1-hour NAAQS 

before revocation of the 1-hour NAAQS. EPA redesignated Atlanta as a marginal nonattainment area under the 8-hour ozone standard, and also to attainment for the 1-hour NAAQS, 

prior to revocation of the 1-hour NAAQS. Atlanta is the only covered area that falls within the 

scope of this proposal. 

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Regulatory Announcement 

For More Information 

You can access this proposed rule on EPA’s Office of Transportation and Air Quality Web site at: 

www.epa.gov/otaq/rfg_regs.htm 

For further information on this rulemaking, please contact Kurt Gustafson at: 

U.S. Environmental Protection Agency
 

Office of Transportation & Air Quality (6406J)
 

1200 Pennsylvania Avenue NW
 

Washington, DC 20460
 

(202) 343-9219
 

E-mail: gustafson.kurt@epa.gov
 

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