[Code of Federal Regulations]
[Title 40, Volume 14]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR80.46]

[Page 618-619]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 80--REGULATION OF FUELS AND FUEL ADDITIVES--Table of Contents
 
                    Subpart D--Reformulated Gasoline
 
Sec. 80.46  Measurement of reformulated gasoline fuel parameters.

    (a) Sulfur. Sulfur content of gasoline and butane must be determined 
by use of the following methods:
    (1) The sulfur content of gasoline must be determined by use of 
American Society for Testing and Materials (ASTM) standard method D 
2622-98, entitled ``Standard Test Method for Sulfur in Petroleum 
Products by Wavelength Dispersive X-ray Fluorescence Spectrometry.''
    (2) Beginning January 1, 2004, the sulfur content of butane must be 
determined by the use of ASTM standard method D 3246-96, entitled 
``Standard Test Method for Sulfur in Petroleum Gas by Oxidative 
Microcoulometry.''
    (b) Olefins. Olefin content shall be determined using ASTM standard 
method D 1319-98, entitled ``Standard Test Method for Hydrocarbon Types 
in Liquid Petroleum Products by Fluorescent Indicator Adsorption.''
    (c) Reid vapor pressure (RVP). Reid vapor pressure (RVP) shall be 
determined using ASTM standard method D 5191-01, entitled ``Standard 
Test Method for Vapor Pressure of Petroleum Products (Mini Method),'' 
except that the following correlation equation must be used:

RVP psi = (0.956 * X) -0.347
    RVP kPa = (0.956 * X) -2.39

    Where:
    X = total measured vapor pressure in psi or kPa.

    (d) Distillation. Distillation parameters shall be determined using 
ASTM standard method D 86-01, entitled'' Standard Test Method for 
Distillation of Petroleum Products at Atmospheric Pressure.''
    (e) Benzene. (1) Benzene content shall be determined using ASTM 
standard method D-3606-99, entitled ``Standard Test Method for 
Determination of Benzene and Toluene in Finished Motor and Aviation 
Gasoline by Gas Chromatography''; except that
    (2) Instrument parameters shall be adjusted to ensure complete 
resolution of the benzene, ethanol and methanol peaks because ethanol 
and methanol may cause interference with ASTM standard method D-3606-99 
when present.

[[Page 619]]

    (f)(1) Aromatic content shall be determined using ASTM D 5769-98, 
entitled, ``Standard Test Method for Determination of Benzene, Toluene, 
and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass 
Spectrometry'', except that the sample chilling requirements in section 
8 of this standard method are optional.
    (2) [Reserved]
    (3) (i) Prior to September 1, 2004, any refiner or importer may 
determine aromatics content using ASTM standard method D 1319-99, 
entitled ``Standard Test Method for Hydrocarbon Types in Liquid 
Petroleum Products by Flourescent Indicator Adsorption,'' for purposes 
of meeting any testing requirement involving aromatics content; provided 
that
    (ii) The refiner or importer test result is correlated with the 
method specified in paragraph (f)(1) of this section.
    (g) Oxygen and oxygenate content analysis. (1) Oxygen and oxygenate 
content shall be determined using ASTM standard method D 5599-00, 
entitled ``Standard Test Method for Determination of Oxygenates in 
Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization 
Detection.''
    (2) (i) Prior to September 1, 2004, and when the oxygenates present 
are limited to MTBE, ETBE, TAME, DIPE, tertiary-amyl alcohol and 
C1 to C4 alcohols, any refiner, importer, or 
oxygenate blender may determine oxygen and oxygenate content using ASTM 
standard method D 4815-99 entitled ``Standard Test Method for 
Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol, and 
C1 to C4 Alcohols in Gasoline by Gas 
Chromatography,'' for purposes of meeting any testing requirement; 
provided that
    (ii) The refiner or importer test result is correlated with the 
method specified in paragraph (g)(1) of this section.
    (h) Incorporations by reference. ASTM standard methods D 3246-96, 
``Standard Test Method for Sulfur in Petroleum Gas by Oxidative 
Microcoulometry'' D 3606-99, entitled ``Standard Test Method for 
Determination of Benzene and Toluene in Finished Motor and Aviation 
Gasoline by Gas Chromatography;'' D 1319-98, entitled ``Standard Test 
Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent 
Indicator Adsorption;' D 1319-99, entitled ``Standard Test Method for 
Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator 
Adsorption;'' D 4815-99, entitled ``Standard Test Method for 
Determination of MTBE, ETBE, TAME, DIPE, tertiary-Amyl Alcohol and 
C1 to C4 Alcohols in Gasoline by Gas 
Chromatography;'' D 2622-98, entitled ``Standard Test Method for Sulfur 
in Petroleum Products by Wavelength Dispersive X-Ray Fluorescence 
Spectrometry;'' D 5191-01, entitled, ``Standard Test Method for Vapor 
Pressure of Petroleum Products (Mini Method);'' D 5599-00, entitled, 
``Standard Test Method for Determination of Oxygenates in Gasoline by 
Gas Chromatography and Oxygen Selective Flame Ionization Detection;'' D 
5769-98, entitled, ``Standard Test Method for Determination of Benzene, 
Toluene, and Total Aromatics in Finished Gasolines by Gas 
Chromatography/Mass Spectrometry,'' and D 86-01, entitled, ``Standard 
Test Method for Distillation of Petroleum Products at Atmospheric 
Pressure;'' are incorporated by reference in this section. These 
incorporations by reference were approved by the Director of the Federal 
Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies 
may be obtained from the American Society for Testing and Materials, 100 
Barr Harbor Dr., West Conshohocken, PA 19428-2959. Copies may be 
inspected at the Air Docket Section (LE-131), room M-1500, U.S. 
Environmental Protection Agency, Docket No. A-97-03, 401 M Street, SW., 
Washington, DC 20460, or at the Office of the Federal Register, National 
Archives and Records Administration, 800 North Capitol Street, NW., 
Suite 700, Washington, DC.

[59 FR 7813, Feb. 16, 1994, as amended at 59 FR 36961, July 20, 1994; 61 
FR 58306, Nov. 13, 1996; 63 FR 63793, Nov. 17, 1998; 65 FR 6822, Feb. 
10, 2000; 65 FR 53189, Sept. 1, 2000; 66 FR 17263, Mar. 29, 2001; 67 FR 
8737, Feb. 26, 2002; 67 FR 40181, June 12, 2002]

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