[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: 40CFR89.112]

[Page 53-57]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 89--CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD COMPRESSION-IGNITION 
ENGINES--Table of Contents
 
       Subpart B--Emission Standards and Certification Provisions
 
Sec. 89.112  Oxides of nitrogen, carbon monoxide, hydrocarbon, and particulate 
matter exhaust emission standards.

    (a) Exhaust emission from nonroad engines to which this subpart is 
applicable shall not exceed the applicable exhaust emission standards 
contained in Table 1, as follows:


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[GRAPHIC] [TIFF OMITTED] TR23OC98.001


    (b) Exhaust emissions of oxides of nitrogen, carbon monoxide, 
hydrocarbon, and nonmethane hydrocarbon are measured using the 
procedures set forth in subpart E of this part.

[[Page 55]]

    (c) Exhaust emission of particulate matter is measured using the 
California Regulations for New 1996 and Later Heavy-Duty Off-Road Diesel 
Cycle Engines. This procedure is incorporated by reference. See 
Sec. 89.6.
    (d) In lieu of the NOX standards, NMHC + NOX 
standards, and PM standards specified in paragraph (a) of this section, 
manufacturers may elect to include engine families in the averaging, 
banking, and trading program, the provisions of which are specified in 
subpart C of this part. The manufacturer must set a family emission 
limit (FEL) not to exceed the levels contained in Table 2. The FEL 
established by the manufacturer serves as the standard for that engine 
family. Table 2 follows:


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[GRAPHIC] [TIFF OMITTED] TR23OC98.002


    (e) Naturally aspirated nonroad engines to which this subpart is 
applicable shall not discharge crankcase emissions into the ambient 
atmosphere, unless such crankcase emissions are permanently routed into 
the exhaust and included in all exhaust emission measurements. This 
provision applies to all

[[Page 57]]

Tier 2 engines and later models. This provision does not apply to 
engines using turbochargers, pumps, blowers, or superchargers for air 
induction.
    (f) The following paragraphs define the requirements for low-
emitting Blue Sky Series engines:
    (1) Voluntary standards. Engines may be designated ``Blue Sky 
Series'' engines through the 2004 model year by meeting the voluntary 
standards listed in Table 3, which apply to all certification and in-use 
testing, as follows:

             Table 3--Voluntary Emission Standards (g/kW-hr)
------------------------------------------------------------------------
              Rated Brake  Power (kW)                 NMHC+NOX      PM
------------------------------------------------------------------------
kW<8..............................................          4.6     0.48
8[le]kW<19........................................          4.5     0.48
19[le]kW<37.......................................          4.5     0.36
37[le]kW<75.......................................          4.7     0.24
75[le]kW<130......................................          4.0     0.18
130[le]kW[le]560..................................          4.0     0.12
kW560..................................          3.8     0.12
------------------------------------------------------------------------

    (2) Additional standards. Blue Sky Series engines are subject to all 
provisions that would otherwise apply under this part, except as 
specified in paragraph (f)(3) of this section.
    (3) Test procedures. NOX, NMHC, and PM emissions are 
measured using the procedures set forth in 40 CFR part 86, subpart N, in 
lieu of the procedures set forth in subpart E of this part. CO emissions 
may be measured using the procedures set forth either in 40 CFR part 86, 
subpart N, or in Subpart E of this part. Manufacturers may use an 
alternate procedure to demonstrate the desired level of emission control 
if approved in advance by the Administrator. Engines meeting the 
requirements to qualify as Blue Sky Series engines must be capable of 
maintaining a comparable level of emission control when tested using the 
procedures set forth in paragraph (c) of this section and subpart E of 
this part. The numerical emission levels measured using the procedures 
from subpart E of this part may be up to 20 percent higher than those 
measured using the procedures from 40 CFR part 86, subpart N, and still 
be considered comparable.

[59 FR 31335, June 17, 1994. Redesignated and amended at 63 FR 56995, 
57000, Oct. 23, 1998]