Fuels and Fuel Additives
Guide on Federal and State Summer RVP Standards for Conventional Gasoline Only
The 1990 Clean Air Act (CAA) Amendments added a new section, 211(h), that prohibited the EPA from establishing a volatility standard more stringent than 9.0 pounds per square inch (psi) in an ozone attainment area, except that the EPA may impose a lower (i.e., more stringent) standard in any former ozone nonattainment area that has been redesignated to attainment.
In response to the 1990 CAA Amendments, the EPA amended the volatility regulations at 40 C.F.R. 80.27. The EPA set the Reid Vapor Pressure (RVP) standard at 9.0 psi for designated volatility attainment areas (40 CFR 80.27(a)(2)(i)) and the RVP standard at 7.8 psi for certain designated volatility nonattainment areas (40 CFR 80.27(a)(2)(ii)). A designated volatility nonattainment area is an area that is designated as being nonattainment for the ozone National Ambient Air Quality Standard (NAAQS) pursuant to a rulemaking under CAA section 107(d)(4)(A)(ii), and a designated volatility attainment area is an area not designated as being in nonattainment with the NAAQS for ozone. (40 CFR 80.2(cc) and 80.2(dd), respectively).
Designations and exact boundaries of the ozone nonattainment areas subject to the 7.8 psi RVP standard were published in the November 6, 1991 notice that designated areas pursuant to section 107(d)(4)(A)(ii). See Air Quality Designations and Classifications; 56 Fed. Reg. 56,694 (Nov. 6, 1991) (codified at 40 C.F.R. pt. 81(1991).
The EPA also set the RVP standard at 7.8 psi for the 1997 ozone nonattainment area in Colorado that was designated as nonattainment for ozone in an April 30, 2004 notice designating areas pursuant to section 107(d)(1). See Air Quality Designations and Classifications for the 8-Hour Ozone National Ambient Air Quality Standards; Early Action Compact Areas With Deferred Effective Dates, 69 Fed. Reg. 23858 (August 30, 2004) (codified at 40 C.F.R. pt. 81(2004).
Accordingly, the 7.8 psi standard set forth in the state-by-state RVP Table at 40 CFR 80.27(a)(2)(ii) applies to the nonattainment areas identified in the ozone NAAQS designation and classifications at 56 Fed. Reg. 56,694 which was codified at 40 C.F.R. pt. 81 in November 1991 and the Colorado nonattainment area identified in the ozone NAAQS designation and classifications at 69 Fed. Reg. 23858, which was codified at 40 C.F.R. pt. 81 in August 2004. The 9.0 psi standard applies to conventional gasoline in all other areas of the lower 48 states not covered by either the 7.8 psi federal volatility requirement or an EPA approved SIP fuel, as denoted in the table below.
For this reference guide, RVP limits are listed by county, which may not coincide precisely with the borders of a nonattainment or attainment area. For specific information regarding borders, please review the ozone NAAQS designation and classifications notices identified above. Additionally, consult the respective EPA regional office regarding the boundaries of any federally-approved SIP with more stringent RVP standards.
RVP limits are listed where 1) the EPA has approved a request from a state to relax the RVP standard from 7.8 psi to 9.0 psi; and 2) a state has received a waiver under CAA section 211(c)(4)(C) to adopt into its federally approved state implementation plan (SIP) a state fuel program that is more stringent than federal requirements. Not listed are locations where voluntary agreements allow for supply of lower RVP fuel than what is otherwise required for an area.
Below is a summary of the federal fuel volatility regulations at 40 CFR 80.27:
- For all regulated parties except retailers and wholesale purchaser-consumers, maximum standards generally take effect May 1.
- Standards for June l to September 15 are maximum standards for all regulated parties including retailers and wholesale purchaser-consumers, unless the state has an extended summer ozone season as part of the federally-approved SIP (e.g. Arizona, Eastern Texas).
- Gasoline alcohol blends meeting requirements of 40 CFR 80.27(d) have 1.0 psi waiver of applicable RVP standard unless:
1) the state has adopted and enforces a SIP-approved RVP standard which does not provide for the 1.0 psi waiver (e.g. Maine, New York, Pennsylvania, Texas);
2) the state has received the EPA’s approval to opt-out of the 1.0 psi waiver provision per CAA section 1501(c) of the Energy Policy Act of 2005 [Clean Air Act 211(h)(5), as amended]; or
3) the state uses reformulated gasoline (RFG), which has a more stringent VOC performance standard. Additional information about RFG can be found at www.epa.gov/otaq/rfg.htm.
- Alaska, Hawaii, and U.S. territories are exempted from federal volatility regulations.
State-by-State RVP Table
|State||County/ Parish||City||Month & RVP PSI Max|
|AL||All counties I||9.0||9.0||9.0||9.0||9.0|
|AZ||Maricopa (part)||Phoenix||9.0||7.0A||7.0||7.0||7.0 (Sept. 30)|
|CA||(See EPA RFG list)B|
|CA||All counties implement a version of the California Reformulated Gasoline Program, which enforces RVP standards more stringent than the federal requirements. Standards and compliance periods vary by air basin; please refer to the California Air Resources Board website for additional details: http://www.arb.ca.gov/fuels/fuels.htm|
|CT||(See EPA RFG list)B|
|DC||(See EPA RFG list)B|
|DE||(See EPA RFG list)B|
|GA||See Footnote C for list of 45 counties affected||Atlanta area||9.0||7.0A||7.0||7.0||7.0|
|IL||All other conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|IL||(See EPA RFG list)B,D|
|IN||All other conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|IN||(See EPA RFG list)B|
|KY||All conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|KY||(See EPA RFG list)B|
|LA||E Baton Rouge||Baton Rouge||9.0||7.8||7.8||7.8||7.8|
|LA||W Baton Rouge||9.0||7.8||7.8||7.8||7.8|
|MA||(See EPA RFG list)B|
|MD||All conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|MD||(See EPA RFG list)2|
|ME||(See EPA RFG list)A, E, H|
|MO||All other conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|MO||(See EPA RFG list)B|
|NH||All conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|NH||(See EPA RFG list)B|
|NJ||(See EPA RFG list)B|
|NY||All conventional gasoline counties||9.0A,E||9.0||9.0||9.0||9.0|
|NY||(See EPA RFG list)2|
|PA||All other conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|PA||(See EPA RFG list)B|
|RI||(See EPA RFG list)B|
|TX||See Footnote F for list of 95 counties affected||Eastern Texas||7.8A,E||7.8||7.8||7.8||7.8 (Oct 1)|
|TX||El Paso||El Paso||7.0A,E||7.0||7.0||7.0||7.0|
|TX||All other conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|TX||(See EPA RFG List)B|
|UT||Salt Lake||Salt Lake City||9.0||7.8||7.8||7.8||7.8|
|VA||All conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|VA||(See EPA RFG List)B|
|WI||All conventional gasoline counties||9.0||9.0||9.0||9.0||9.0|
|WI||(See EPA RFG List)B|
Notes to Federal and State RVP Standards
A State has received a waiver under Clean Air Act 211(c)(4)(C) to adopt a state fuel program, more stringent than federal requirements, into the federally-approved State Implementation Plan (SIP). State fuel program may also define a volatility level and compliance date for refiners and/or terminals different than the compliance date for retailers. Potentially affected parties should refer to the SIP or contact the State for more information about proper compliance.
B Indicates there are counties or areas in counties in the state which have reformulated gasoline (RFG) requirements. See EPA's "List of Federal Reformulated Gasoline Program Areas" at www.epa.gov/otaq/rfg/whereyoulive.htm. RFG areas must meet a VOC emissions performance reduction standard per 40 CFR 80.4l.
C GA - Atlanta area counties include: Banks, Barrow, Bartow, Butts, Carroll, Chattooga, Cherokee, Clarke, Clayton, Cobb, Coweta, Dawson, DeKalb, Douglas, Fayette, Floyd, Forsyth, Fulton, Gordon, Gwinnett, Hall, Haralson, Heard, Henry, Jackson, Jasper, Jones, Lamar, Lumpkin, Madison, Meriwether, Monroe, Morgan, Newton, Oconee, Paulding, Pickens, Pike, Polk, Putnam, Rockdale, Spalding, Troup, Upson, and Walton.
D Madison, Monroe, and St. Clair counties are RFG covered areas; however, a SIP requirement of 7.2 psi RVP is still in place.
E State fuel program in federally-approved SIP does not provide for use of a 1.0 psi ethanol waiver under 40 CFR 80.27(d). The 1.0 psi ethanol waiver is not applicable during the entire volatility control period defined in the SIP (e.g. May 1 - September 15).
F TX - Eastern Texas counties include: Anderson, Angelina, Aransas, Atascosa, Austin, Bastrop, Bee, Bell, Bexar, Bosque, Bowie, Brazos, Burleson, Caldwell, Calhoun, Camp, Cass, Cherokee, Colorado, Comal, Cooke, Coryell, De Witt, Delta, Ellis, Falls, Fannin, Fayette, Franklin, Freestone, Goliad, Gonzales, Grayson, Gregg, Grimes, Guadalupe, Harrison, Hays, Henderson, Hill, Hood, Hopkins, Houston, Hunt, Jackson, Jasper, Johnson, Karnes, Kaufman, Lamar, Lavaca, Lee, Leon, Limestone, Live Oak, Madison, Marion, Matagorda, McLennan, Milam, Morris, Nacogdoches, Navarro, Newton, Nueces, Panola, Parker, Polk, Rains, Red River, Refugio, Robertson, Rockwall, Rusk, Sabine, San Jacinto, San Patricio, San Augustine, Shelby, Smith, Somervell, Titus, Travis, Trinity, Tyler, Upshur, Van Zandt, Victoria, Walker, Washington, Wharton, Williamson, Wilson, Wise, and Wood.
G EPA issued a final rule on May 22, 2014 (79 FR 29362) that relaxed the 7.8 psi federal RVP requirement in Davidson, Davie, Durham, Forsyth, Granville, Guilford and Wake Counties in North Carolina and Broward, Dade, Duval, Hillsborough, Palm Beach and Pinellas Counties in Florida. The rule is effective on May 30, 2014.
H Androscoggin, Cumberland, Kennebec, Knox, Lincoln, Sagadahoc, and York counties are RFG covered areas; however, a SIP requirement of 7.8 psi RVP is still in place.
I EPA issued a final rule on June 25, 2015 that relaxed the 7.8 psi federal RVP requirement in Jefferson and Shelby counties. As of the publication date of the final rule, no Alabama counties will be subject to the 7.8 psi federal volatility requirement.
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