[Code of Federal Regulations]
[Title 40, Volume 31]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1039.705]

[Page 528]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 1039_CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD 
COMPRESSION-IGNITION ENGINES--Table of Contents
 
       Subpart H_Averaging, Banking, and Trading for Certification
 
Sec.  1039.705  How do I generate and calculate emission credits?

    The provisions of this section apply separately for calculating 
emission credits for NOX, NOX+NMHC, or PM.
    (a) Calculate positive emission credits for an engine family that 
has an FEL below the otherwise applicable standard. Calculate negative 
emission credits for an engine family that has an FEL above the 
otherwise applicable standard.
    (b) For each participating engine family, calculate positive or 
negative emission credits relative to the otherwise applicable emission 
standard. Round calculated emission credits to the nearest kilogram 
(kg), using consistent units throughout the following equation:

Emission credits (kg) = (Std - FEL) x (Volume) x (AvgPR) x (UL) x 
    (10-3)

Where:

Std = the emission standard, in grams per kilowatt-hour, that applies 
under subpart B of this part for engines not participating in the ABT 
program of this subpart (the ``otherwise applicable standard'').
FEL = the family emission limit for the engine family, in grams per 
kilowatt-hour.
Volume = the number of engines eligible to participate in the averaging, 
banking, and trading program within the given engine family during the 
model year, as described in paragraph (c) of this section.
AvgPR = the average maximum engine power of all the engine 
configurations within an engine family, calculated on a sales-weighted 
basis, in kilowatts.
UL = the useful life for the given engine family, in hours.

    (c) In your application for certification, base your showing of 
compliance on projected production volumes for engines whose point of 
first retail sale is in the United States. As described in Sec.  
1039.730, compliance with the requirements of this subpart is determined 
at the end of the model year based on actual production volumes for 
engines whose point of first retail sale is in the United States. Do not 
include any of the following engines to calculate emission credits:
    (1) Engines exempted under subpart G of this part or under 40 CFR 
part 1068.
    (2) Exported engines.
    (3) Engines not subject to the requirements of this part, such as 
those excluded under Sec.  1039.5.
    (4) Engines in families that include only stationary engines, except 
for engines in families certified to standards that are identical to 
standards applicable under this part 1039 to nonroad engines of the same 
type for the same model year.
    (5) Any other engines, where we indicate elsewhere in this part 1039 
that they are not to be included in the calculations of this subpart.

[69 FR 39213, June 29, 2004, as amended at 71 FR 39185, July 11, 2006]