[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: 40CFR80.66]

[Page 638]
 
                   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. 80.66  Calculation of reformulated gasoline properties.

    (a) All volume measurements required by these regulations shall be 
temperature adjusted to 60 degrees Fahrenheit.
    (b) The percentage of oxygen by weight contained in a gasoline 
blend, based upon its percentage oxygenate by volume and density, shall 
exclude denaturants and water.
    (c) The properties of reformulated gasoline consist of per-gallon 
values separately and individually determined on a batch-by-batch basis 
using the methodologies specified in Sec. 80.46 for each of those 
physical and chemical parameters necessary to determine compliance with 
the standards to which the gasoline is subject, and per-gallon values 
for the VOC, NOX, and toxics emissions performance standards 
to which the gasoline is subject.
    (d) Per-gallon oxygen content shall be determined based upon the 
weight percent oxygen of a representative sample of gasoline, using the 
method set forth in Sec. 80.46(g). The total oxygen content associated 
with a batch of gasoline (in percent-gallons) is calculated by 
multiplying the weight percent oxygen content times the volume.
    (e) Per-gallon benzene content shall be determined based upon the 
volume percent benzene of a representative sample of a batch of gasoline 
by the method set forth in Sec. 80.46(e). The total benzene content 
associated with a batch of gasoline (in percent-gallons) is calculated 
by multiplying the volume percent benzene content times the volume.
    (f) Per-gallon RVP shall be determined based upon the measurement of 
RVP of a representative sample of a batch of gasoline by the sampling 
methodologies specified in appendix D of this part and the testing 
methodology specified in appendix E of this part. The total RVP value 
associated with a batch of gasoline (in RVP-gallons) is calculated by 
multiplying the RVP times the volume.
    (g)(1) Per gallon values for VOC and NOX emissions 
reduction shall be calculated using the methodology specified in 
Sec. 80.45 that is appropriate for the gasoline.
    (2) Per-gallon values for toxic emissions performance reduction 
shall be established using:
    (i) For gasoline subject to the simple model, the methodology under 
Sec. 80.42 that is appropriate for the gasoline; and
    (ii) For gasoline subject to the complex model, the methodology 
specified in Sec. 80.45 that is appropriate for the gasoline.
    (3) The total VOC, NOX, and toxic emissions performance 
reduction values associated with a batch of gasoline (in percent 
reduction-gallons) is calculated by multiplying the per-gallon percent 
emissions performance reduction times the volume of the batch.

[59 FR 7813, Feb. 16, 1994, as amended at 59 FR 36963, July 20, 1994]