§72.501. Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors.
30 C.F.R. § 72.501
-(b) [Reserved]
Each piece of nonpermissible heavy-duty diesel-powered equipment (as defined by § 75.1908(a)), 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.
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.
Notes, amendments, and revision history
Amendments
[66 FR 5704, Jan. 19, 2001, as amended at 66 FR 15033, Mar. 15, 2001; 66 FR 27866, May 21, 2001; 91 FR 38283, June 25, 2026]
Source
Source: 66 FR 5704, Jan. 19, 2001, unless otherwise noted.
Authority
Authority: 30 U.S.C. 811, 813(h), 957.
Source
Source: 59 FR 8327, Feb. 18, 1994, unless otherwise noted.
Amendments
[66 FR 5704, Jan. 19, 2001, as amended at 66 FR 15033, Mar. 15, 2001; 66 FR 27866, May 21, 2001; 91 FR 38283, June 25, 2026]