# 30 CFR § 72.502: Requirements for nonpermissible light-duty diesel-powered equipment other than generators and compressors > Federal · Regulations · In force URL: https://www.frixlaw.com/law-library/statutes/ecfr-30-72.502 ## Section - **Citation:** 30 CFR § 72.502 - **Heading:** Requirements for nonpermissible light-duty diesel-powered equipment other than generators and compressors - **Jurisdiction:** Federal - **Kind:** Regulations - **Status:** In force - **Text as of:** September 22, 2026 - **Source:** Publisher's official text - **Location:** Title 30—Mineral Resources > CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR > SUBCHAPTER O—COAL MINE SAFETY AND HEALTH > PART 72—HEALTH STANDARDS FOR COAL MINES > Subpart D—Diesel Particulate Matter—Underground Areas of Underground Coal Mines ## Text (a) Each piece of nonpermissible light-duty diesel-powered equipment (as defined by § 75.1908(b) of this chapter), other than generators and compressors, 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) A piece of nonpermissible light-duty diesel-powered equipment must be deemed to be in compliance with the requirements of paragraph (a) of this section if it utilizes an engine which meets or exceeds the applicable particulate matter emission requirements of the Environmental Protection Administration listed in Table 72.502-1, as follows: Table 72.502-1 EPA requirement EPA category PM limit 40 CFR 86.094-8(a)(1)(I)(A)(2) light duty vehicle 0.1 g/mile. 40 CFR 86.094-9(a)(1)(I)(A)(2) light duty truck 0.1 g/mile. 40 CFR 86.094-11(a)(1)(iv)(B) heavy duty highway engine 0.1 g/bhp-hr. 40 CFR 89.112(a) Tier 2 nonroad Varies by power: kW<(hp<11) 0.80 g/kW-hr (0.60 g/bhp-hr). 8≤kW<19 (11≤hp<25) 0.80 g/kW-hr (0.60 g/bhp-hr). 19≤kW<37 (25≤hp<50) 0.60 g/kW-hr (0.45 g/bhp-hr). 37≤kW<75 (50≤hp<100) 0.40 g/kW-hr (0.30 g/bhp-hr). 75≤kW<130 (100≤hp<175) 0.30 g/kW-hr (0.22 g/bhp-hr). 130≤kW<225 (175≤hp<300) 0.20 g/kW-hr (0.15 g/bhp-hr). 225≤kW<450 (300≤hp<600) 0.20 g/kW-hr (0.15 g/bhp-hr). 450≤kW<560 (600≤hp<750)” 0.20 g/kW-hr (0.15 g/bhp-hr) kW≥560 (hp≥750) 0.20 g/kW-hr (0.15 g/bhp-hr) Notes: “g” means grams; “kW” means kilowatt; “hp” means horsepower; “g/kW-hr” means grams/kilowatt-hour; “g/bhp-hr” means grams/brake horsepower-hour. (c) The requirements of this section do not apply to any diesel-powered ambulance or fire fighting equipment that is being used in accordance with the mine fire fighting and evacuation plan under § 75.1502. [66 FR 5704, Jan. 19, 2001, as amended at 66 FR 15033, Mar. 15, 2001; 66 FR 27866, May 21, 2001; 70 FR 36347, June 23, 2005] ## Nearby sections - [30 CFR § 72.1 § 72.1 Scope.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.1.md) - [30 CFR § 72.100 § 72.100 Periodic examinations.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.100.md) - [30 CFR § 72.500 § 72.500 Emission limits for permissible diesel-powered equipment.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.500.md) - [30 CFR § 72.501 § 72.501 Emission limits for nonpermissible heavy-duty diesel-powered equipment, generators and compressors.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.501.md) - [30 CFR § 72.502 § 72.502 Requirements for nonpermissible light-duty diesel-powered equipment other than generators and compressors.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.502.md) - [30 CFR § 72.503 § 72.503 Determination of emissions; filter maintenance; definition of “introduced”.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.503.md) - [30 CFR § 72.510 § 72.510 Miner health training.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.510.md) - [30 CFR § 72.520 § 72.520 Diesel equipment inventory.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.520.md) - [30 CFR § 72.610 § 72.610 Abrasive blasting.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.610.md) - [30 CFR § 72.620 § 72.620 Drill dust control at surface mines and surface areas of underground mines.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.620.md) - [30 CFR § 72.630 § 72.630 Drill dust control at underground areas of underground mines.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.630.md) - [30 CFR § 72.700 § 72.700 Respiratory equipment; respirable dust.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.700.md) - [30 CFR § 72.701 § 72.701 Respiratory equipment; gas, dusts, fumes, or mists.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.701.md) - [30 CFR § 72.710 § 72.710 Selection, fit, use, and maintenance of approved respirators.](https://www.frixlaw.com/law-library/statutes/ecfr-30-72.710.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-30-72.502. Check the current official text before relying on it. Not legal advice.