# 40 CFR § 60.1045: Are there different subcategories of small municipal waste combustion units within this subpart?

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-60.1045

## Section

- **Citation:** 40 CFR § 60.1045
- **Heading:** Are there different subcategories of small municipal waste combustion units within this subpart?
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS > PART 60—STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES > Subpart AAAA—Standards of Performance for Small Municipal Waste Combustion Units for Which Construction is Commenced After August 30, 1999 or for Which Modification or Reconstruction is Commenced After June 6, 2001 > Applicability

## Text

(a) Yes, this subpart subcategorizes small municipal waste combustion units into two groups based on the aggregate capacity of the municipal waste combustion plant as follows:
(1) Class I Units. Class I units are small municipal waste combustion units that are located at municipal waste combustion plants with an aggregate plant combustion capacity greater than 250 tons per day of municipal solid waste. (See the definition of “municipal waste combustion plant capacity” in § 60.1465 for specification of which units at a plant are included in the aggregate capacity calculation.)
(2) Class II Units. Class II units are small municipal waste combustion units that are located at municipal waste combustion plants with an aggregate plant combustion capacity less than or equal to 250 tons per day of municipal solid waste. (See the definition of “municipal waste combustion plant capacity” in § 60.1465 for specification of which units at a plant are included in the aggregate capacity calculation.)
(b) The requirements for Class I and Class II units are identical except for two items:
(1) Class I units have a nitrogen oxides emission limit. Class II units do not have a nitrogen oxides emission limit (see table 1 of this subpart). Additionally, Class I units have continuous emission monitoring, recordkeeping, and reporting requirements for nitrogen oxides.
(2) Class II units are eligible for the reduced testing option provided in § 60.1305.

## Nearby sections

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-60.1045. Check the current official text before relying on it. Not legal advice.