Skip to content
AirPermitHub

40 CFR Part 60, Subpart IIII

NSPS Subpart IIII (Quad I): Stationary Compression Ignition Internal Combustion Engines

Subpart IIII—Standards of Performance for Stationary Compression Ignition Internal Combustion Engines
Rule text from eCFRLast amended in eCFR 2024-08-30

Where this text comes from

Citation
40 CFR Part 60, Subpart IIII
Official title
Subpart IIII—Standards of Performance for Stationary Compression Ignition Internal Combustion Engines
Text as of
eCFR current through 2026-10-28, retrieved 2026-10-30
Latest amendment
2024-08-30
Source note
71 FR 39172, July 11, 2006, unless otherwise noted.

Headings and quoted sections on this page are copied from the eCFR text of Subpart IIII without changes. AirPermitHub checks eCFR every week and reviews any change before publishing it, so this page can trail eCFR by a few days. eCFR is maintained by the Office of the Federal Register and the Government Publishing Office. It is not an official legal edition of the CFR, and it does not show how an agency has applied the rule in a permit.

Where to look in Subpart IIII

Sections sorted by the words in their eCFR headings. Read the full section before relying on it; requirements often sit in more than one place.

Who is covered
§ 60.4200
Compliance dates
§ 60.4208
Showing compliance
§ 60.4210§ 60.4211
Monitoring
§ 60.4209
Tests, methods, and calculations
§ 60.4212§ 60.4213
Notifications, reports, records
§ 60.4214
Definitions
§ 60.4219
General provisions
§ 60.4218

Who the subpart covers, in the rule's own words

The sections that set out what the subpart applies to, quoted in full from eCFR. Dates, sizes, and other figures are the rule's, not AirPermitHub's.

§ 60.4200 Am I subject to this subpart?

Open in eCFR

(a) The provisions of this subpart are applicable to manufacturers, owners, and operators of stationary compression ignition (CI) internal combustion engines (ICE) and other persons as specified in paragraphs (a)(1) through (4) of this section. For the purposes of this subpart, the date that construction commences is the date the engine is ordered by the owner or operator.

(1) Manufacturers of stationary CI ICE with a displacement of less than 30 liters per cylinder where the model year is:

(i) 2007 or later, for engines that are not fire pump engines;

(ii) The model year listed in Table 3 to this subpart or later model year, for fire pump engines.

(2) Owners and operators of stationary CI ICE that commence construction after July 11, 2005, where the stationary CI ICE are:

(i) Manufactured after April 1, 2006, and are not fire pump engines, or

(ii) Manufactured as a certified National Fire Protection Association (NFPA) fire pump engine after July 1, 2006.

(3) Owners and operators of any stationary CI ICE that are modified or reconstructed after July 11, 2005 and any person that modifies or reconstructs any stationary CI ICE after July 11, 2005.

Show the rest of § 60.4200 (5 more paragraphs)

(4) The provisions of § 60.4208 of this subpart are applicable to all owners and operators of stationary CI ICE that commence construction after July 11, 2005.

(b) The provisions of this subpart are not applicable to stationary CI ICE being tested at a stationary CI ICE test cell/stand.

(c) If you are an owner or operator of an area source subject to this subpart, you are exempt from the obligation to obtain a permit under 40 CFR part 70 or 40 CFR part 71, provided you are not required to obtain a permit under 40 CFR 70.3(a) or 40 CFR 71.3(a) for a reason other than your status as an area source under this subpart. Notwithstanding the previous sentence, you must continue to comply with the provisions of this subpart applicable to area sources.

(d) Stationary CI ICE may be eligible for exemption from the requirements of this subpart as described in 40 CFR part 1068, subpart C, except that owners and operators, as well as manufacturers, may be eligible to request an exemption for national security.

(e) Owners and operators of facilities with CI ICE that are acting as temporary replacement units and that are located at a stationary source for less than 1 year and that have been properly certified as meeting the standards that would be applicable to such engine under the appropriate nonroad engine provisions, are not required to meet any other provisions under this subpart with regard to such engines.

[71 FR 39172, July 11, 2006, as amended at 76 FR 37967, June 28, 2011; 86 FR 34357, June 29, 2021]

Every section in Subpart IIII

20 sections and 8 tables, in eCFR order. Each link opens the official text.

What This Subpart Covers

  • § 60.4200Am I subject to this subpart?Amended 2021-07-29

Emission Standards for Manufacturers

  • § 60.4201What emission standards must I meet for non-emergency engines if I am a stationary CI internal combustion engine manufacturer?Amended 2021-07-29
  • § 60.4202What emission standards must I meet for emergency engines if I am a stationary CI internal combustion engine manufacturer?Amended 2023-03-27
  • § 60.4203How long must my engines meet the emission standards if I am a manufacturer of stationary CI internal combustion engines?Amended 2016-12-23

Emission Standards for Owners and Operators

  • § 60.4204What emission standards must I meet for non-emergency engines if I am an owner or operator of a stationary CI internal combustion engine?Amended 2021-07-29
  • § 60.4205What emission standards must I meet for emergency engines if I am an owner or operator of a stationary CI internal combustion engine?Amended 2021-07-29
  • § 60.4206How long must I meet the emission standards if I am an owner or operator of a stationary CI internal combustion engine?Amended 2016-12-23

Fuel Requirements for Owners and Operators

  • § 60.4207What fuel requirements must I meet if I am an owner or operator of a stationary CI internal combustion engine subject to this subpart?Amended 2021-01-01

Other Requirements for Owners and Operators

  • § 60.4208What is the deadline for importing or installing stationary CI ICE produced in previous model years?Amended 2016-12-23
  • § 60.4209What are the monitoring requirements if I am an owner or operator of a stationary CI internal combustion engine?Amended 2016-12-23

Compliance Requirements

  • § 60.4210What are my compliance requirements if I am a stationary CI internal combustion engine manufacturer?Amended 2021-07-29
  • § 60.4211What are my compliance requirements if I am an owner or operator of a stationary CI internal combustion engine?Amended 2022-08-10

Testing Requirements for Owners and Operators

  • § 60.4212What test methods and other procedures must I use if I am an owner or operator of a stationary CI internal combustion engine with a displacement of less than 30 liters per cylinder?Amended 2021-07-29
  • § 60.4213What test methods and other procedures must I use if I am an owner or operator of a stationary CI internal combustion engine with a displacement of greater than or equal to 30 liters per cylinder?Amended 2016-12-23

Notification, Reports, and Records for Owners and Operators

  • § 60.4214What are my notification, reporting, and recordkeeping requirements if I am an owner or operator of a stationary CI internal combustion engine?Amended 2024-08-30

Special Requirements

  • § 60.4215What requirements must I meet for engines used in Guam, American Samoa, or the Commonwealth of the Northern Mariana Islands?Amended 2016-12-23
  • § 60.4216What requirements must I meet for engines used in Alaska?Amended 2021-07-29
  • § 60.4217What emission standards must I meet if I am an owner or operator of a stationary internal combustion engine using special fuels?Amended 2016-12-23

General Provisions

  • § 60.4218What General Provisions and confidential information provisions apply to me?Amended 2023-03-27

Definitions

  • § 60.4219What definitions apply to this subpart?Amended 2022-08-10

Tables and appendices

Amendment history

Dates on which eCFR records a change to any section of Subpart IIII, newest first.

  • 2024-08-30
  • 2023-03-27
  • 2023-01-24
  • 2022-08-10
  • 2021-07-29
  • 2021-06-29
  • 2021-01-01
  • 2020-12-04
  • 2019-11-13
  • 2019-09-20
  • 2019-09-06
  • 2019-07-26
  • 2019-07-05
  • 2016-12-23

To read the rulemakings behind these dates, search the Federal Register for Subpart IIII. New EPA air rules and proposals also appear in the Federal Air Rule Tracker.

AirPermitHub provides educational, engineering, research, and compliance-support information. Information provided by the platform does not constitute legal advice and should not replace review of applicable regulations, permits, agency guidance, or consultation with qualified professionals. Full disclaimer