Guide on Federal and State Summer 

RVP Standards for Conventional 

Gasoline Only
EPA-420-B-10-018

March 2010

Transportation and Regional Programs Division

Office of Transportation and Air Quality

U.S. Environmental Protection Agency

Guide on Federal and State Summer 

RVP Standards for Conventional 

Gasoline Only
Guide on Federal and State Summer RVP Standards 

 for Conventional Gasoline Only

This guide is intended for quick reference purposes only. Federal volatility regulations (40 CFR 80.27) 

apply to “designated volatility nonattainment areas” and to “designated volatility attainment areas,” as 

defined in 40 CFR 80.2(cc) and 80.2(dd), respectively. For this quick reference guide, we have listed 

RVP (Reid Vapor Pressure) limits by county, which may not coincide precisely with the borders of a 

nonattainment or attainment area. We have not listed RVP limits which may apply through voluntary 

agreements for supply of lower RVP fuel than what is otherwise required for an area. For a brief 

description of the federal fuel volatility regulations, see below. For specific information regarding 

borders, please consult your respective EPA regional office. 

Summary of 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 state has an extended summer 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 EPA approval to opt-out of the 1.0 psi waiver provision per 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. 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

AL Jefferson Birmingham 9.0 7.0A 7.0 7.0 7.0 

AL Shelby 9.0 7.0A 7.0 7.0 7.0 

AL All others 9.0 9.0 9.0 9.0 9.0 

AR All counties 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) 

AZ All others 9.0 9.0 9.0 9.0 9.0 

CA (See EPA RFG list)B

1 
2 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

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

CO Adams 9.0 7.8 7.8 7.8 7.8 

CO Arapahoe 9.0 7.8 7.8 7.8 7.8 

CO Boulder Boulder 9.0 7.8 7.8 7.8 7.8 

CO Broomfield 9.0 7.8 7.8 7.8 7.8 

CO Denver Denver 9.0 7.8 7.8 7.8 7.8 

CO Douglas 9.0 7.8 7.8 7.8 7.8 

CO Jefferson 9.0 7.8 7.8 7.8 7.8 

CO Larimer (part) 9.0 7.8 7.8 7.8 7.8 

CO Weld (part) 9.0 7.8 7.8 7.8 7.8 

CO All others 9.0 9.0 9.0 9.0 9.0 

CT (See EPA RFG list)B

DC (See EPA RFG list)B

DE (See EPA RFG list)B

FL Broward 9.0 7.8 7.8 7.8 7.8 

FL Dade Miami 9.0 7.8 7.8 7.8 7.8 

FL Duval Jacksonville 9.0 7.8 7.8 7.8 7.8 

FL Hillsborough Tampa 9.0 7.8 7.8 7.8 7.8 

FL Palm Beach 9.0 7.8 7.8 7.8 7.8 

FL Pinellas 9.0 7.8 7.8 7.8 7.8 

FL All others 9.0 9.0 9.0 9.0 9.0 

GA See Footnote C for list of 

45 counties affected 

Atlanta area 9.0 7.0A 7.0 7.0 7.0 

GA All others 9.0 9.0 9.0 9.0 9.0 

ID All counties 9.0 9.0 9.0 9.0 9.0 

IL Madison E. St. Louis 9.0 7.2D 7.2 7.2 7.2

IL Monroe 9.0 7.2D 7.2 7.2 7.2 
3 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

IL St. Clair 9.0 7.2D 7.2 7.2 7.2 

IL All other conventional 

gasoline counties 

9.0 9.0 9.0 9.0 9.0 

IL (See EPA RFG list)B

IN Clark 7.8A 7.8 7.8 7.8 7.8 

IN Floyd 7.8A 7.8 7.8 7.8 7.8 

IN All other conventional 

gasoline counties 

9.0 9.0 9.0 9.0 9.0 

IN (See EPA RFG list)B

IA All counties 9.0 9.0 9.0 9.0 9.0 

KS Johnson 9.0 7.0A 7.0 7.0 7.0 

KS Wyandotte Kansas City 9.0 7.0A 7.0 7.0 7.0 

KS All others 9.0 9.0 9.0 9.0 9.0 

KY All conventional gasoline 

counties 

9.0 9.0 9.0 9.0 9.0 

KY (See EPA RFG list)B

LA Ascension 9.0 7.8 7.8 7.8 7.8 

LA Beauregard 9.0 7.8 7.8 7.8 7.8 

LA Calcasieu Lake Charles 9.0 7.8 7.8 7.8 7.8 

LA E Baton Rouge Baton Rouge 9.0 7.8 7.8 7.8 7.8 

LA Iberville 9.0 7.8 7.8 7.8 7.8 

LA Jefferson 9.0 7.8 7.8 7.8 7.8 

LA Lafayette 9.0 7.8 7.8 7.8 7.8 

LA Lafourche 9.0 7.8 7.8 7.8 7.8 

LA Livingston 9.0 7.8 7.8 7.8 7.8 

LA Orleans New Orleans 9.0 7.8 7.8 7.8 7.8 

LA Point Coupee 9.0 7.8 7.8 7.8 7.8 

LA St Bernard 9.0 7.8 7.8 7.8 7.8 

LA St Charles 9.0 7.8 7.8 7.8 7.8 

LA St James 9.0 7.8 7.8 7.8 7.8 
4 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

LA St Mary 9.0 7.8 7.8 7.8 7.8 

LA W Baton Rouge 9.0 7.8 7.8 7.8 7.8 

LA All others 9.0 9.0 9.0 9.0 9.0 

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 Androscoggin 7.8A,E 7.8 7.8 7.8 7.8 

ME Cumberland Portland 7.8A,E 7.8 7.8 7.8 7.8 

ME Kennebec Augusta 7.8A,E 7.8 7.8 7.8 7.8 

ME Knox 7.8A,E 7.8 7.8 7.8 7.8 

ME Lincoln 7.8A,E 7.8 7.8 7.8 7.8 

ME Sagadahoc 7.8A,E 7.8 7.8 7.8 7.8 

ME York 7.8A,E 7.8 7.8 7.8 7.8 

ME All others 9.0A,E 9.0 9.0 9.0 9.0 

MI Lenawee 9.0 7.0A 7.0 7.0 7.0 

MI Livingston 9.0 7.0A 7.0 7.0 7.0 

MI Macomb 9.0 7.0A 7.0 7.0 7.0 

MI Monroe 9.0 7.0A 7.0 7.0 7.0 

MI Oakland 9.0 7.0A 7.0 7.0 7.0 

MI St. Clair 9.0 7.0A 7.0 7.0 7.0 

MI Washtenaw Ann Arbor 9.0 7.0A 7.0 7.0 7.0 

MI Wayne Detroit 9.0 7.0A 7.0 7.0 7.0 

MI All others 9.0 9.0 9.0 9.0 9.0 

MN All counties 9.0 9.0 9.0 9.0 9.0 

MT All counties 9.0 9.0 9.0 9.0 9.0 

MO Clay 9.0 7.0A 7.0 7.0 7.0 

MO Jackson Kansas City 9.0 7.0A 7.0 7.0 7.0 

MO Platte 9.0 7.0A 7.0 7.0 7.0 
5 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

MO All other conventional 

gasoline counties 

9.0 9.0 9.0 9.0 9.0 

MO (See EPA RFG list)B

MS All counties 9.0 9.0 9.0 9.0 9.0 

NC Davidson 9.0 7.8 7.8 7.8 7.8 

NC Davie (part) 9.0 7.8 7.8 7.8 7.8 

NC Durham 9.0 7.8 7.8 7.8 7.8 

NC Forsyth Winston-Salem 9.0 7.8 7.8 7.8 7.8 

NC Gaston 9.0 7.8 7.8 7.8 7.8 

NC Granville (part) 9.0 7.8 7.8 7.8 7.8 

NC Guilford Greensboro 9.0 7.8 7.8 7.8 7.8 

NC Mecklenburgh Charlotte 9.0 7.8 7.8 7.8 7.8 

NC Wake Raleigh 9.0 7.8 7.8 7.8 7.8 

NC All others 9.0 9.0 9.0 9.0 9.0 

NE All counties 9.0 9.0 9.0 9.0 9.0 

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

NM All counties 9.0 9.0 9.0 9.0 9.0 

ND All counties 9.0 9.0 9.0 9.0 9.0 

NV Washoe Reno 9.0 7.8 7.8 7.8 7.8 

NV All others 9.0 9.0 9.0 9.0 9.0 

NY All conventional gasoline 

counties 

9.0A,E 9.0 9.0 9.0 9.0 

NY (See EPA RFG list)2

OH Butler 9.0 7.8A 7.8 7.8 7.8 

OH Clark 9.0 7.8A 7.8 7.8 7.8 

OH Clermont 9.0 7.8A 7.8 7.8 7.8 

OH Clinton 9.0 7.8A 7.8 7.8 7.8 
6 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

OH Greene 9.0 7.8A 7.8 7.8 7.8 

OH Hamilton Cincinnati 9.0 7.8A 7.8 7.8 7.8 

OH Miami 9.0 7.8A 7.8 7.8 7.8 

OH Montgomery Dayton 9.0 7.8A 7.8 7.8 7.8 

OH Warren 9.0 7.8A 7.8 7.8 7.8 

OH All counties 9.0 9.0 9.0 9.0 9.0 

OK All counties 9.0 9.0 9.0 9.0 9.0 

OR Clackamas 9.0 7.8 7.8 7.8 7.8 

OR Multnomah Portland 9.0 7.8 7.8 7.8 7.8 

OR Washington 9.0 7.8 7.8 7.8 7.8 

OR Marion (part) Salem 9.0 7.8 7.8 7.8 7.8 

OR Polk (part) 9.0 7.8 7.8 7.8 7.8 

OR All others 9.0 9.0 9.0 9.0 9.0 

PA Allegheny Pittsburgh 7.8A,E 7.8 7.8 7.8 7.8 

PA Armstrong 7.8A,E 7.8 7.8 7.8 7.8 

PA Beaver 7.8A,E 7.8 7.8 7.8 7.8 

PA Butler 7.8A,E 7.8 7.8 7.8 7.8 

PA Fayette 7.8A,E 7.8 7.8 7.8 7.8 

PA Washington 7.8A,E 7.8 7.8 7.8 7.8 

PA Westmoreland 7.8A,E 7.8 7.8 7.8 7.8 

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

SC All counties 9.0 9.0 9.0 9.0 9.0 

SD All counties 9.0 9.0 9.0 9.0 9.0 

TN Davidson Nashville 9.0 7.8 7.8 7.8 7.8 

TN Rutherford 9.0 7.8 7.8 7.8 7.8 
7 

Month & RVP PSI Max 

 State 

 County/ 

 Parish City 

 May June July Aug Sept 

1-15 

TN Shelby Memphis 9.0 7.8 7.8 7.8 7.8 

TN Sumner 9.0 7.8 7.8 7.8 7.8 

TN Williamson 9.0 7.8 7.8 7.8 7.8 

TN Wilson 9.0 7.8 7.8 7.8 7.8 

TN All others 9.0 9.0 9.0 9.0 9.0 

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 Hardin 9.0 7.8 7.8 7.8 7.8 

TX Jefferson Beaumont 9.0 7.8 7.8 7.8 7.8 

TX Orange 9.0 7.8 7.8 7.8 7.8 

TX All other conventional 

gasoline counties 

9.0 9.0 9.0 9.0 9.0 

TX (See EPA RFG List)B

UT Davis 9.0 7.8 7.8 7.8 7.8 

UT Salt Lake Salt Lake City 9.0 7.8 7.8 7.8 7.8 

UT All others 9.0 9.0 9.0 9.0 9.0 

VA All conventional gasoline 

counties 

9.0 9.0 9.0 9.0 9.0 

VA (See EPA RFG List)B

VT All counties 9.0 9.0 9.0 9.0 9.0 

WA All counties 9.0 9.0 9.0 9.0 9.0 

WV All counties 9.0 9.0 9.0 9.0 9.0 

WI All conventional gasoline 

counties 

9.0 9.0 9.0 9.0 9.0 

WI (See EPA RFG List)B

WY All counties 9.0 9.0 9.0 9.0 9.0 
8 

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.