[Code of Federal Regulations]
[Title 40, Volume 18]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR91.205]
[Page 313-314]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 91--CONTROL OF EMISSIONS FROM MARINE SPARK-IGNITION ENGINES--Table of
Contents
Subpart C--Averaging, Banking, and Trading Provisions
Sec. 91.205 Banking.
(a) A manufacturer of a marine SI engine family with an FEL below
the applicable emission standard for a given model year may bank credits
in that model year for use in averaging and trading in the following
three model years. Negative credits must be banked according to the
requirements under Sec. 91.207(c). Positive credits not used within the
three model years after they are banked are forfeited.
(1) Early banking. (i) For outboard engines in model year (MY) 1997,
a manufacturer may bank positive emission credits if the following
conditions are met: the manufacturer certifies their entire marine
outboard engine product line for MY 1997 under the emission standards
applicable to MY 1998, the manufacturer demonstrates compliance with the
corporate average standard under Sec. 91.207(b), and the sum of positive
and negative credits under Sec. 91.207 generates positive emission
credits, when the following formula is used for purposes of the
applicable standard in Sec. 91.207(a). The number of credits that may be
banked under this paragraph is the number of positive emission credits
generated under the provisions of the preceding sentence. Marine engines
certified under the provisions of this paragraph are subject to all of
the requirements of this part.
Hydrocarbon Plus Oxides of Nitrogen Exhaust Emission Standards
[Grams per kilowatt-hour]
------------------------------------------------------------------------
P<4.3 kW
HC+NOX
Model year Emission P4.3 kW HC+NOX
standard by emission standard by model year
model year
------------------------------------------------------------------------
1997................... 276 (0.959 x (151 + 557/P0.9)+1.22)
------------------------------------------------------------------------
(ii) For personal watercraft engines in model year 1998, a
manufacturer may bank positive emission credits if the following
conditions are met: The manufacturer certifies their entire marine
personal watercraft engine product line for MY 1998 under the emission
standards applicable to 1998 model year outboard engine emission
standards, the manufacturer demonstrates compliance with the corporate
average standard under Sec. 91.207(b), and the sum of positive and
negative credits under Sec. 91.207 generates positive emission credits,
when the following formula is used for purposes of the applicable
standard Sec. 91.207(a). The number of credits that may be banked under
this paragraph is the number of positive emission credits generated
under the provisions of the preceding sentence. Marine engines certified
under the provisions of this paragraph are subject to all of the
requirements of this part.
Hydrocarbon Plus Oxides of Nitrogen Exhaust Emission Standards
[Grams per kilowatt-hour]
------------------------------------------------------------------------
P<4.3 kW
HC+NOX
Model year emission P 4.3 kW HC+NOX
standard by emission standard by model year
model year
------------------------------------------------------------------------
1998................... 276 (0.959 x (151 + 557/P0.9[rpar])
+ 1.22)
------------------------------------------------------------------------
(iii) For personal watercraft in model year 1997, a manufacturer may
bank positive emission credits if the following conditions are met: the
manufacturer certifies their entire marine personal watercraft engine
product line for MY 1997 under the emission standards specified in the
formula below for PWC, the manufacturer demonstrates compliance with the
corporate average standard under Sec. 91.207(b), and the sum of positive
and negative credits under
[[Page 314]]
Sec. 91.207 generates positive emission credits, when the following
formula is used for purposes of the applicable standard in
Sec. 91.207(a). The number of credits that may be banked under this
paragraph is the number of positive emission credits generated under the
provisions of the preceding sentence. Marine engines certified under the
provisions of this paragraph are subject to all of the requirements of
this part.
Hydrocarbon Plus Oxides of Nitrogen Exhaust Emission Standards
[Grams per kilowatt-hour]
------------------------------------------------------------------------
P<4.3 kW
HC+NOX
Model year emission P 4.3 kW HC+NOX
standard by emission standard by model year
model year
------------------------------------------------------------------------
1997................... 276 (0.959 x (151 + 557/P0.9[rpar])
+ 1.22)
------------------------------------------------------------------------
(b) A manufacturer may bank actual credits only after the end of the
model year and after EPA has reviewed the manufacturer's end-of-year
reports. During the model year and before submittal of the end-of-year
report, credits originally designated in the certification process for
banking will be considered reserved and may be redesignated for trading
or averaging in the end-of-year report and final report.
(c) Credits declared for banking from the previous model year that
have not been reviewed by EPA may be used in averaging or trading
transactions. However, such credits may be revoked at a later time
following EPA review of the end-of-year report or any subsequent audit
actions.