# Air Plan Approval; Idaho; Inspection and Maintenance Program Removal
> **Rule** · Final rule. · Published 2023-06-15 · Effective 2023-07-17 · 88 FR 39177
## Document
- **Document number:** 2023-12699
- **Category:** air-emissions
- **Federal Register citation:** 88 FR 39177
- **CFR reference:** 40 CFR 52
- **Publication date:** 2023-06-15
- **Effective date:** 2023-07-17
- **State:** ID
- **EPA docket:** EPA-R10-OAR-2023-0195
## Abstract

On March 30, 2023, the Environmental Protection Agency (EPA) proposed to approve revisions to the Idaho State Implementation Plan (SIP) submitted by the State of Idaho (Idaho or the State) on December 29, 2022. The SIP revision, applicable in the Boise-Northern Ada County Carbon Monoxide area (Northern Ada County CO area) in Idaho, removes the Inspection and Maintenance (I/M) program, which was previously approved into the SIP for use as a control measure in the State's plan to address motor vehicle emissions in the nonattainment area. The SIP revision included a demonstration that the requested revision would not interfere with attainment or maintenance of any national ambient air quality standard (NAAQS) or with any other applicable requirement of the Clean Air Act (CAA). The EPA is taking final action to approve Idaho's December 29, 2022, submission.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/06/15/2023-12699/air-plan-approval-idaho-inspection-and-maintenance-program-removal)
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