[Code of Federal Regulations]
[Title 30, Volume 1]
[Revised as of July 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 30CFR72.501]

[Page 440]
 
                       TITLE 30--MINERAL RESOURCES
 
  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
 
PART 72--HEALTH STANDARDS FOR COAL MINES--Table of Contents
 
 Subpart D--Diesel Particulate Matter--Underground Areas of Underground 
                               Coal Mines
 
Sec. 72.501  Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors.

    (a) Each piece of nonpermissible heavy-duty diesel-powered equipment 
(as defined by Sec. 75.1908(a) of this part), generator or compressor 
introduced into an underground area of an underground coal mine after 
May 21, 2001 must emit no more than 5.0 grams per hour of diesel 
particulate matter.
    (b) As of July 21, 2003, each piece of nonpermissible heavy-duty 
diesel-powered equipment (as defined by Sec. 75.1908(a) of this part), 
generator or compressor operated in an underground area of an 
underground coal mine must emit no more than 5.0 grams per hour of 
diesel particulate matter.
    (c) As of January 19, 2005, each piece of nonpermissible heavy-duty 
diesel-powered equipment (as defined by Sec. 75.1908(a) of this part), 
generator or compressor operated in an underground area of an 
underground coal mine must emit no more than 2.5 grams per hour of 
diesel particulate matter.
    (d) Notwithstanding the other provisions of this section, a 
generator or compressor that discharges its exhaust directly into intake 
air that is coursed directly to a return air course, or discharges its 
exhaust directly into a return air course, is not subject to the 
applicable requirements of this section.

[66 FR 5704, Jan. 19, 2001, as amended at 66 FR 15033, Mar. 15, 2001; 66 
FR 27866, May 21, 2001]