# Air Plan Approval; New Hampshire; Single Source Orders and Revisions to Definitions
> **Rule** · Final rule. · Published 2018-09-07 · Effective 2018-10-09 · 83 FR 45356
## Document
- **Document number:** 2018-19290
- **Category:** air-emissions
- **Federal Register citation:** 83 FR 45356
- **CFR reference:** 40 CFR 52
- **Publication date:** 2018-09-07
- **Effective date:** 2018-10-09
- **State:** NH
- **EPA docket:** EPA-R01-OAR-2017-0442
## Abstract

The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of New Hampshire. The revisions incorporate a single source order into the New Hampshire SIP, remove a previously-approved order from the SIP, and approve various definitions used within New Hampshire's air pollution control regulations. This action is being taken in accordance with the Clean Air Act.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/09/07/2018-19290/air-plan-approval-new-hampshire-single-source-orders-and-revisions-to-definitions)
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