# National Emission Standards for Hazardous Air Pollutants for Reciprocating Internal Combustion Engines; New Source Performance Standards for Stationary Internal Combustion Engines; Court Vacatur
> **Rule** · Final rule. · Published 2022-08-10 · Effective 2022-08-10 · 87 FR 48603
## Document
- **Document number:** 2022-17060
- **Category:** air-emissions
- **Federal Register citation:** 87 FR 48603
- **CFR reference:** 40 CFR 60
- **Publication date:** 2022-08-10
- **Effective date:** 2022-08-10
- **EPA docket:** EPA-HQ-OAR-2008-0708
## Abstract

The Environmental Protection Agency (EPA) is amending the Code of Federal Regulations (CFR) to reflect a 2015 court decision regarding the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Stationary Reciprocating Internal Combustion Engines (RICE) and the New Source Performance Standards (NSPS) for Stationary Internal Combustion Engines (ICE). The court vacated provisions in the regulations specifying that emergency engines could operate for emergency demand response or during periods where there is a deviation of voltage or frequency. This ministerial rule revises the RICE NESHAP and ICE NSPS to conform to the court's decision.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/08/10/2022-17060/national-emission-standards-for-hazardous-air-pollutants-for-reciprocating-internal-combustion)
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