---
kind: "section"
citation: "42 U.S.C. § 7429"
title: "42"
title_heading: "The Public Health and Welfare"
number: "7429"
heading: "Solid waste combustion"
release: "119-102"
url: "https://uscodex.org/usc/42/7429"
units:
  - "Chapter 85 — Air Pollution Prevention and Control"
  - "Subchapter I — Programs and Activities"
  - "Part A — Air Quality and Emission Limitations"
---

# §7429. Solid waste combustion

- (a) **New source performance standards—**
  - (1) **In general—**
    - (A) The [Administrator](/usc/42/7602.md?p=a) shall establish performance [standards](/usc/42/1320d.md?p=7) and other requirements pursuant to [section 7411 of this title](/usc/42/7411.md) and this section for each [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1). Such [standards](/usc/42/1320d.md?p=7) shall include emissions limitations and other requirements applicable to new [units](/usc/42/1395w–114b.md?p=g-2) and guidelines (under [section 7411(d) of this title](/usc/42/7411.md?p=d) and this section) and other requirements applicable to existing [units](/usc/42/1395w–114b.md?p=g-2).
    - (B) [Standards](/usc/42/1320d.md?p=7) under [section 7411 of this title](/usc/42/7411.md) and this section applicable to [solid waste incineration units](#g-1) with capacity greater than 250 tons per day combusting [municipal waste](#g-5) shall be promulgated not later than 12 months after November 15, 1990. Nothing in this subparagraph shall alter any schedule for the promulgation of [standards](/usc/42/1320d.md?p=7) applicable to such [units](/usc/42/1395w–114b.md?p=g-2) under [section 7411 of this title](/usc/42/7411.md) pursuant to any settlement and consent decree entered by the [Administrator](/usc/42/7602.md?p=a) before November 15, 1990: Provided, That, such [standards](/usc/42/1320d.md?p=7) are subsequently [modified](/usc/42/7501.md?p=4) pursuant to the schedule established in this subparagraph to include each of the requirements of this section.
    - (C) [Standards](/usc/42/1320d.md?p=7) under [section 7411 of this title](/usc/42/7411.md) and this section applicable to [solid waste incineration units](#g-1) with capacity equal to or less than 250 tons per day combusting [municipal waste](#g-5) and [units](/usc/42/1395w–114b.md?p=g-2) combusting [hospital](/usc/42/1395dd.md?p=e-5) waste, [medical waste](#g-6) and infectious waste shall be promulgated not later than 24 months after November 15, 1990.
    - (D) [Standards](/usc/42/1320d.md?p=7) under [section 7411 of this title](/usc/42/7411.md) and this section applicable to [solid waste incineration units](#g-1) combusting commercial or industrial waste shall be proposed not later than 36 months after November 15, 1990, and promulgated not later than 48 months after November 15, 1990.
    - (E) Not later than 18 months after November 15, 1990, the [Administrator](/usc/42/7602.md?p=a) shall publish a schedule for the promulgation of [standards](/usc/42/1320d.md?p=7) under [section 7411 of this title](/usc/42/7411.md) and this section applicable to other [categories](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1).
  - (2) **Emissions standard—** [Standards](/usc/42/1320d.md?p=7) applicable to [solid waste incineration units](#g-1) promulgated under [section 7411 of this title](/usc/42/7411.md) and this section shall reflect the maximum degree of reduction in emissions of [air pollutants](/usc/42/7602.md?p=g) listed under section[^1] (a)(4) that the [Administrator](/usc/42/7602.md?p=a), taking into consideration the cost of achieving such emission reduction, and any non-air quality health and environmental impacts and [energy](/usc/42/6311.md?p=7) requirements, determines is achievable for new or existing [units](/usc/42/1395w–114b.md?p=g-2) in each [category](/usc/42/1395w–4.md?p=j-1). The [Administrator](/usc/42/7602.md?p=a) may distinguish among classes, types (including mass-burn, refuse-derived fuel, modular and other types of [units](/usc/42/1395w–114b.md?p=g-2)), and sizes of [units](/usc/42/1395w–114b.md?p=g-2) within a [category](/usc/42/1395w–4.md?p=j-1) in establishing such [standards](/usc/42/1320d.md?p=7). The degree of reduction in emissions that is deemed achievable for new [units](/usc/42/1395w–114b.md?p=g-2) in a [category](/usc/42/1395w–4.md?p=j-1) shall not be less stringent than the emissions control that is achieved in practice by the best controlled similar [unit](/usc/42/1395w–114b.md?p=g-2), as determined by the [Administrator](/usc/42/7602.md?p=a). Emissions [standards](/usc/42/1320d.md?p=7) for existing [units](/usc/42/1395w–114b.md?p=g-2) in a [category](/usc/42/1395w–4.md?p=j-1) may be less stringent than [standards](/usc/42/1320d.md?p=7) for new [units](/usc/42/1395w–114b.md?p=g-2) in the same [category](/usc/42/1395w–4.md?p=j-1) but shall not be less stringent than the average emissions limitation achieved by the best performing 12 percent of [units](/usc/42/1395w–114b.md?p=g-2) in the [category](/usc/42/1395w–4.md?p=j-1) (excluding [units](/usc/42/1395w–114b.md?p=g-2) which first met lowest achievable emissions rates 18 months before the date such [standards](/usc/42/1320d.md?p=7) are proposed or 30 months before the date such [standards](/usc/42/1320d.md?p=7) are promulgated, whichever is later).
  - (3) **Control methods and technologies—** [Standards](/usc/42/1320d.md?p=7) under [section 7411 of this title](/usc/42/7411.md) and this section applicable to [solid waste incineration units](#g-1) shall be based on methods and technologies for [removal](/usc/42/9601.md?p=23) or destruction of [pollutants](/usc/42/1397h.md?p=c-4) before, during, or after combustion, and shall incorporate for new [units](/usc/42/1395w–114b.md?p=g-2) siting requirements that minimize, on a site specific basis, to the maximum extent practicable, potential risks to public health or the environment.
  - (4) **Numerical emissions limitations—** The performance [standards](/usc/42/1320d.md?p=7) promulgated under [section 7411 of this title](/usc/42/7411.md) and this section and applicable to [solid waste incineration units](#g-1) shall specify numerical [emission limitations](/usc/42/7602.md?p=k) for the following substances or mixtures: particulate matter (total and fine), opacity (as appropriate), sulfur dioxide, [hydrogen](/usc/42/16152.md?p=1) chloride, oxides of nitrogen, carbon monoxide, lead, cadmium, mercury, and dioxins and dibenzofurans. The [Administrator](/usc/42/7602.md?p=a) may promulgate numerical emissions limitations or provide for the monitoring of postcombustion concentrations of surrogate substances, parameters or periods of residence time in excess of stated temperatures with respect to [pollutants](/usc/42/1397h.md?p=c-4) other than those listed in this paragraph.
  - (5) **Review and revision—** Not later than 5 years following the initial promulgation of any performance [standards](/usc/42/1320d.md?p=7) and other requirements under this section and [section 7411 of this title](/usc/42/7411.md) applicable to a [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1), and at 5 year intervals thereafter, the [Administrator](/usc/42/7602.md?p=a) shall review, and in accordance with this section and [section 7411 of this title](/usc/42/7411.md), revise such [standards](/usc/42/1320d.md?p=7) and requirements.
- (b) **Existing units—**
  - (1) **Guidelines—** Performance [standards](/usc/42/1320d.md?p=7) under this section and [section 7411 of this title](/usc/42/7411.md) for [solid waste incineration units](#g-1) shall include guidelines promulgated pursuant to [section 7411(d) of this title](/usc/42/7411.md?p=d) and this section applicable to existing [units](/usc/42/1395w–114b.md?p=g-2). Such guidelines shall include, as provided in this section, each of the elements required by [subsection (a)](#a) (emissions limitations, notwithstanding any restriction in [section 7411(d) of this title](/usc/42/7411.md?p=d) regarding issuance of such limitations), [subsection (c)](#c) (monitoring), [subsection (d)](#d) (operator [training](/usc/42/285e–2.md?p=b-2)), [subsection (e)](#e) (permits), and [subsection (h)(4)](#h-4)[^2] (residual risk).
  - (2) **State plans—** Not later than 1 year after the [Administrator](/usc/42/7602.md?p=a) promulgates guidelines for a [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1), each [State](/usc/42/7602.md?p=d) in which [units](/usc/42/1395w–114b.md?p=g-2) in the [category](/usc/42/1395w–4.md?p=j-1) are operating shall submit to the [Administrator](/usc/42/7602.md?p=a) a plan to implement and enforce the guidelines with respect to such [units](/usc/42/1395w–114b.md?p=g-2). The [State](/usc/42/7602.md?p=d) plan shall be at least as protective as the guidelines promulgated by the [Administrator](/usc/42/7602.md?p=a) and shall provide that each [unit](/usc/42/1395w–114b.md?p=g-2) subject to the guidelines shall be in compliance with all requirements of this section not later than 3 years after the [State](/usc/42/7602.md?p=d) plan is approved by the [Administrator](/usc/42/7602.md?p=a) but not later than 5 years after the guidelines were promulgated. The [Administrator](/usc/42/7602.md?p=a) shall approve or disapprove any [State](/usc/42/7602.md?p=d) plan within 180 days of the submission, and if a plan is disapproved, the [Administrator](/usc/42/7602.md?p=a) shall [state](/usc/42/7602.md?p=d) the reasons for disapproval in writing. Any [State](/usc/42/7602.md?p=d) may modify and resubmit a plan which has been disapproved by the [Administrator](/usc/42/7602.md?p=a).
  - (3) **Federal plan—** The [Administrator](/usc/42/7602.md?p=a) shall develop, implement and enforce a plan for [existing solid waste incineration units](#g-4) within any [category](/usc/42/1395w–4.md?p=j-1) located in any [State](/usc/42/7602.md?p=d) which has not submitted an approvable plan under this subsection with respect to [units](/usc/42/1395w–114b.md?p=g-2) in such [category](/usc/42/1395w–4.md?p=j-1) within 2 years after the date on which the [Administrator](/usc/42/7602.md?p=a) promulgated the relevant guidelines. Such plan shall assure that each [unit](/usc/42/1395w–114b.md?p=g-2) subject to the plan is in compliance with all provisions of the guidelines not later than 5 years after the date the relevant guidelines are promulgated.
- (c) **Monitoring—** The [Administrator](/usc/42/7602.md?p=a) shall, as part of each performance [standard](/usc/42/1320d.md?p=7) promulgated pursuant to [subsection (a)](#a) and [section 7411 of this title](/usc/42/7411.md), promulgate regulations requiring the [owner or operator](/usc/42/9601.md?p=20-B) of each [solid waste incineration unit](#g-1)—
  - (1) to monitor emissions from the [unit](/usc/42/1395w–114b.md?p=g-2) at the point at which such emissions are emitted into the ambient air (or within the stack, combustion chamber or pollution control equipment, as appropriate) and at such other points as necessary to protect public health and the environment;
  - (2) to monitor such other parameters relating to the operation of the [unit](/usc/42/1395w–114b.md?p=g-2) and its pollution control technology as the [Administrator](/usc/42/7602.md?p=a) determines are appropriate; and
  - (3) to report the results of such monitoring.

  Such regulations shall contain provisions regarding the frequency of monitoring, test methods and procedures validated on [solid waste incineration units](#g-1), and the form and frequency of reports containing the results of monitoring and shall require that any monitoring reports or test results indicating an exceedance of any [standard](/usc/42/1320d.md?p=7) under this section shall be reported separately and in a manner that facilitates review for purposes of [enforcement actions](/usc/42/247d–6d.md?p=c-5-B-i). Such regulations shall require that copies of the results of such monitoring be maintained on file at the [facility](/usc/42/11049.md?p=4) concerned and that copies shall be made available for [inspection](/usc/42/4851b.md?p=12) and copying by interested members of the public during business hours.

- (d) **Operator training—** Not later than 24 months after November 15, 1990, the [Administrator](/usc/42/7602.md?p=a) shall develop and promote a model [State](/usc/42/7602.md?p=d) [program](/usc/42/274l–1.md?p=4) for the [training](/usc/42/285e–2.md?p=b-2) and certification of [solid waste incineration unit](#g-1) operators and high-capacity fossil fuel fired plant operators. The [Administrator](/usc/42/7602.md?p=a) may authorize any [State](/usc/42/7602.md?p=d) to implement a model [program](/usc/42/274l–1.md?p=4) for the [training](/usc/42/285e–2.md?p=b-2) of [solid waste incineration unit](#g-1) operators and high-capacity fossil fuel fired plant operators, if the [State](/usc/42/7602.md?p=d) has adopted a [program](/usc/42/274l–1.md?p=4) which is at least as effective as the model [program](/usc/42/274l–1.md?p=4) developed by the [Administrator](/usc/42/7602.md?p=a). Beginning on the date 36 months after the date on which performance [standards](/usc/42/1320d.md?p=7) and guidelines are promulgated under [subsection (a)](#a) and [section 7411 of this title](/usc/42/7411.md) for any [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1) it shall be unlawful to operate any [unit](/usc/42/1395w–114b.md?p=g-2) in the [category](/usc/42/1395w–4.md?p=j-1) unless each [person](/usc/42/7602.md?p=e) with control over processes affecting emissions from such [unit](/usc/42/1395w–114b.md?p=g-2) has satisfactorily completed a [training](/usc/42/285e–2.md?p=b-2) [program](/usc/42/274l–1.md?p=4) meeting the requirements established by the [Administrator](/usc/42/7602.md?p=a) under this subsection.
- (e) **Permits—** Beginning (1) 36 months after the promulgation of a performance [standard](/usc/42/1320d.md?p=7) under [subsection (a)](#a) and [section 7411 of this title](/usc/42/7411.md) applicable to a [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1), or (2) the effective date of a permit [program](/usc/42/274l–1.md?p=4) under subchapter V in the [State](/usc/42/7602.md?p=d) in which the [unit](/usc/42/1395w–114b.md?p=g-2) is located, whichever is later, each [unit](/usc/42/1395w–114b.md?p=g-2) in the [category](/usc/42/1395w–4.md?p=j-1) shall operate pursuant to a permit issued under this subsection and subchapter V. Permits required by this subsection may be renewed according to the provisions of subchapter V. Notwithstanding any other provision of this chapter, each permit for a [solid waste incineration unit](#g-1) combusting [municipal waste](#g-5) issued under this chapter shall be issued for a period of up to 12 years and shall be reviewed every 5 years after date of issuance or reissuance. Each permit shall continue in effect after the date of issuance until the date of termination, unless the [Administrator](/usc/42/7602.md?p=a) or [State](/usc/42/7602.md?p=d) determines that the [unit](/usc/42/1395w–114b.md?p=g-2) is not in compliance with all [standards](/usc/42/1320d.md?p=7) and conditions contained in the permit. Such determination shall be made at regular intervals during the term of the permit, such intervals not to exceed 5 years, and only after public comment and public hearing. No permit for a [solid waste incineration unit](#g-1) may be issued under this chapter by an agency, instrumentality or [person](/usc/42/7602.md?p=e) that is also responsible, in whole or part, for the design and [construction](/usc/42/7479.md?p=2-C) or operation of the [unit](/usc/42/1395w–114b.md?p=g-2). Notwithstanding any other provision of this subsection, the [Administrator](/usc/42/7602.md?p=a) or the [State](/usc/42/7602.md?p=d) shall require the [owner or operator](/usc/42/9601.md?p=20-B) of any [unit](/usc/42/1395w–114b.md?p=g-2) to comply with emissions limitations or implement any other measures, if the [Administrator](/usc/42/7602.md?p=a) or the [State](/usc/42/7602.md?p=d) determines that emissions in the absence of such limitations or measures may reasonably be anticipated to endanger public health or the environment. The [Administrator](/usc/42/7602.md?p=a)’s determination under the preceding sentence is a discretionary decision.
- (f) **Effective date and enforcement—**
  - (1) **New units—** Performance [standards](/usc/42/1320d.md?p=7) and other requirements promulgated pursuant to this section and [section 7411 of this title](/usc/42/7411.md) and applicable to [new solid waste incineration units](#g-2) shall be effective as of the date 6 months after the date of promulgation.
  - (2) **Existing units—** Performance [standards](/usc/42/1320d.md?p=7) and other requirements promulgated pursuant to this section and [section 7411 of this title](/usc/42/7411.md) and applicable to [existing solid waste incineration units](#g-4) shall be effective as expeditiously as practicable after approval of a [State](/usc/42/7602.md?p=d) plan under [subsection (b)(2)](#b-2) (or promulgation of a plan by the [Administrator](/usc/42/7602.md?p=a) under [subsection (b)(3)](#b-3)) but in no event later than 3 years after the [State](/usc/42/7602.md?p=d) plan is approved or 5 years after the date such [standards](/usc/42/1320d.md?p=7) or requirements are promulgated, whichever is earlier.
  - (3) **Prohibition—** After the effective date of any performance [standard](/usc/42/1320d.md?p=7), [emission limitation](/usc/42/7602.md?p=k) or other requirement promulgated pursuant to this section and [section 7411 of this title](/usc/42/7411.md), it shall be unlawful for any [owner or operator](/usc/42/9601.md?p=20-B) of any [solid waste incineration unit](#g-1) to which such [standard](/usc/42/1320d.md?p=7), limitation or requirement applies to operate such [unit](/usc/42/1395w–114b.md?p=g-2) in [violation](/usc/42/2000e–16a.md?p=c) of such limitation, [standard](/usc/42/1320d.md?p=7) or requirement or for any other [person](/usc/42/7602.md?p=e) to violate an applicable requirement of this section.
  - (4) **Coordination with other authorities—** For purposes of sections [7411(e)](/usc/42/7411.md?p=e), [7413](/usc/42/7413.md), [7414](/usc/42/7414.md), [7416](/usc/42/7416.md), [7420](/usc/42/7420.md), [7603](/usc/42/7603.md), [7604](/usc/42/7604.md), [7607](/usc/42/7607.md) of this title and other provisions for the enforcement of this chapter, each performance [standard](/usc/42/1320d.md?p=7), [emission limitation](/usc/42/7602.md?p=k) or other requirement established pursuant to this section by the [Administrator](/usc/42/7602.md?p=a) or a [State](/usc/42/7602.md?p=d) or [local government](/usc/42/8401a.md), shall be treated in the same manner as a [standard of performance](/usc/42/7602.md?p=l) under [section 7411 of this title](/usc/42/7411.md) which is an [emission limitation](/usc/42/7602.md?p=k).
- (g) **Definitions—** For purposes of section 306 of the Clean Air Act Amendments of 1990 and this section only—
  - (1) **Solid waste incineration unit—** The term “solid waste incineration unit” means a distinct operating [unit](/usc/42/1395w–114b.md?p=g-2) of any [facility](/usc/42/11049.md?p=4) which combusts any [solid waste](#g-6) material from commercial or industrial establishments or the general public (including [single](/usc/42/2304.md?p=m) and multiple residences, hotels, and motels). Such term does not include incinerators or other [units](/usc/42/1395w–114b.md?p=g-2) required to have a permit under section 3005 of the [Solid Waste](#g-6) Disposal Act [[42 U.S.C. 6925](/usc/42/6925.md)]. The term “solid waste incineration unit” does not include (A) materials recovery [facilities](/usc/42/11049.md?p=4) (including primary or secondary smelters) which combust waste for the primary purpose of recovering metals, (B) qualifying small power production [facilities](/usc/42/11049.md?p=4), as defined in [section 796(17)(C) of title 16](/usc/16/796.md?p=17-C), or qualifying cogeneration [facilities](/usc/42/11049.md?p=4), as defined in [section 796(18)(B) of title 16](/usc/16/796.md?p=18-B), which burn homogeneous waste (such as [units](/usc/42/1395w–114b.md?p=g-2) which burn tires or used oil, but not including refuse-derived fuel) for the production of electric [energy](/usc/42/6311.md?p=7) or in the case of qualifying cogeneration [facilities](/usc/42/11049.md?p=4) which burn homogeneous waste for the production of electric [energy](/usc/42/6311.md?p=7) and steam or forms of useful [energy](/usc/42/6311.md?p=7) (such as heat) which are used for industrial, commercial, heating or cooling purposes, or (C) air curtain incinerators provided that such incinerators only burn wood wastes, yard wastes and clean lumber and that such air curtain incinerators comply with opacity limitations to be established by the [Administrator](/usc/42/7602.md?p=a) by rule.
  - (2) **New solid waste incineration unit—** The term “new solid waste incineration unit” means a [solid waste incineration unit](#g-1) the [construction](/usc/42/7479.md?p=2-C) of which is commenced after the [Administrator](/usc/42/7602.md?p=a) proposes requirements under this section establishing emissions [standards](/usc/42/1320d.md?p=7) or other requirements which would be applicable to such [unit](/usc/42/1395w–114b.md?p=g-2) or a [modified solid waste incineration unit](#g-3).
  - (3) **Modified solid waste incineration unit—** The term “modified solid waste incineration unit” means a [solid waste incineration unit](#g-1) at which [modifications](/usc/42/7501.md?p=4) have occurred after the effective date of a [standard](/usc/42/1320d.md?p=7) under [subsection (a)](#a) if (A) the cumulative cost of the [modifications](/usc/42/7501.md?p=4), over the life of the [unit](/usc/42/1395w–114b.md?p=g-2), exceed 50 per centum of the original cost of [construction](/usc/42/7479.md?p=2-C) and installation of the [unit](/usc/42/1395w–114b.md?p=g-2) (not including the cost of any land purchased in connection with such [construction](/usc/42/7479.md?p=2-C) or installation) updated to current costs, or (B) the [modification](/usc/42/7501.md?p=4) is a physical change in or change in the method of operation of the [unit](/usc/42/1395w–114b.md?p=g-2) which increases the amount of any [air pollutant](/usc/42/7602.md?p=g) emitted by the [unit](/usc/42/1395w–114b.md?p=g-2) for which [standards](/usc/42/1320d.md?p=7) have been established under this section or [section 7411 of this title](/usc/42/7411.md).
  - (4) **Existing solid waste incineration unit—** The term “existing solid waste incineration unit” means a [solid waste](#g-6) [unit](/usc/42/1395w–114b.md?p=g-2) which is not a new or [modified solid waste incineration unit](#g-3).
  - (5) **Municipal waste—** The term “municipal waste” means refuse (and refuse-derived fuel) collected from the general public and from residential, commercial, institutional, and industrial sources consisting of paper, wood, yard wastes, food wastes, plastics, leather, rubber, and other combustible materials and non-combustible materials such as metal, glass and rock, provided that: (A) the term does not include industrial process wastes or [medical wastes](#g-6) that are segregated from such other wastes; and (B) an incineration [unit](/usc/42/1395w–114b.md?p=g-2) shall not be considered to be combusting municipal waste for purposes of [section 7411 of this title](/usc/42/7411.md) or this section if it combusts a fuel feed stream, 30 percent or less of the weight of which is comprised, in aggregate, of municipal waste.
  - (6) **Other terms—** The terms “solid waste” and “medical waste” shall have the meanings established by the [Administrator](/usc/42/7602.md?p=a) pursuant to the Solid Waste Disposal Act [[42 U.S.C. 6901](/usc/42/6901.md) et seq.].
- (h) **Other authority—**
  - (1) **State authority—** Nothing in this section shall preclude or deny the right of any [State](/usc/42/7602.md?p=d) or political subdivision thereof to adopt or enforce any regulation, requirement, limitation or [standard](/usc/42/1320d.md?p=7) relating to [solid waste incineration units](#g-1) that is more stringent than a regulation, requirement, limitation or [standard](/usc/42/1320d.md?p=7) in effect under this section or under any other provision of this chapter.
  - (2) **Other authority under this chapter—** Nothing in this section shall diminish the authority of the [Administrator](/usc/42/7602.md?p=a) or a [State](/usc/42/7602.md?p=d) to establish any other requirements applicable to [solid waste incineration units](#g-1) under any other authority of law, including the authority to establish for any [air pollutant](/usc/42/7602.md?p=g) a national ambient air quality [standard](/usc/42/1320d.md?p=7), except that no [solid waste incineration unit](#g-1) subject to performance [standards](/usc/42/1320d.md?p=7) under this section and [section 7411 of this title](/usc/42/7411.md) shall be subject to [standards](/usc/42/1320d.md?p=7) under [section 7412(d) of this title](/usc/42/7412.md?p=d).
  - (3) **Residual risk—** The [Administrator](/usc/42/7602.md?p=a) shall promulgate [standards](/usc/42/1320d.md?p=7) under [section 7412(f) of this title](/usc/42/7412.md?p=f) for a [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1), if promulgation of such [standards](/usc/42/1320d.md?p=7) is required under [section 7412(f) of this title](/usc/42/7412.md?p=f). For purposes of this[^3] preceding sentence only—
    - (A) the performance [standards](/usc/42/1320d.md?p=7) under [subsection (a)](#a) and [section 7411 of this title](/usc/42/7411.md) applicable to a [category](/usc/42/1395w–4.md?p=j-1) of [solid waste incineration units](#g-1) shall be deemed [standards](/usc/42/1320d.md?p=7) under [section 7412(d)(2) of this title](/usc/42/7412.md?p=d-2), and
    - (B) the [Administrator](/usc/42/7602.md?p=a) shall consider and regulate, if required, the [pollutants](/usc/42/1397h.md?p=c-4) listed under [subsection (a)(4)](#a-4) and no others.
  - (4) **Acid rain—** A [solid waste incineration unit](#g-1) shall not be a utility [unit](/usc/42/1395w–114b.md?p=g-2) as defined in subchapter IV–A: Provided, That, more than 80 per centum of its annual average fuel consumption measured on a Btu basis, during a period or periods to be determined by the [Administrator](/usc/42/7602.md?p=a), is from a fuel (including any waste burned as a fuel) other than a fossil fuel.
  - (5) **Requirements of parts C and D—** No requirement of an [applicable implementation plan](/usc/42/7602.md?p=q) under [section 7475 of this title](/usc/42/7475.md) (relating to [construction](/usc/42/7479.md?p=2-C) of [facilities](/usc/42/11049.md?p=4) in regions identified pursuant to section [7407(d)(1)(A)(ii)](/usc/42/7407.md?p=d-1-A-ii) or [(iii)](/usc/42/7407.md) of this title) or under [section 7502(c)(5) of this title](/usc/42/7502.md?p=c-5) (relating to permits for [construction](/usc/42/7479.md?p=2-C) and operation in [nonattainment areas](/usc/42/7501.md?p=2)) may be used to weaken the [standards](/usc/42/1320d.md?p=7) in effect under this section.

## Footnotes

[^1]: So in original. Probably should be “subsection”.
[^2]: So in original. Probably should be subsection “(h)(3)”.
[^3]: So in original. Probably should be “the”.

## Source credit

(July 14, 1955, ch. 360, title I, § 129, as added Pub. L. 101–549, title III, § 305(a), Nov. 15, 1990, 104 Stat. 2577.)

## Notes

### Editorial Notes

### References in Text

Section 306 of the Clean Air Act Amendments of 1990, referred to in subsec. (g), probably means section 306 of Pub. L. 101–549, which is set out as a note under section 6921 of this title.

The Solid Waste Disposal Act, referred to in subsec. (g)(6), is title II of Pub. L. 89–272, Oct. 20, 1965, 79 Stat. 997, as amended generally by Pub. L. 94–580, § 2, Oct. 21, 1976, 90 Stat. 2795, which is classified generally to chapter 82 (§ 6901 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under section 6901 of this title and Tables.

### Statutory Notes and Related Subsidiaries

### Review of Acid Gas Scrubbing Requirements

Pub. L. 101–549, title III, § 305(c), Nov. 15, 1990, 104 Stat. 2583, provided that: “Prior to the promulgation of any performance standard for solid waste incineration units combusting municipal waste under section 111 or section 129 of the Clean Air Act [42 U.S.C. 7411, 7429], the Administrator shall review the availability of acid gas scrubbers as a pollution control technology for small new units and for existing units (as defined in 54 Federal Register 52190 (December 20, 1989)[)], taking into account the provisions of subsection (a)(2) of section 129 of the Clean Air Act.”