# Approval and Promulgation of State Implementation Plans: Alaska
> **Rule** · Direct final rule. · Published 1999-09-01 · Effective 1999-11-01 · 64 FR 47674
## Document
- **Document number:** 99-22450
- **Category:** air-emissions
- **Federal Register citation:** 64 FR 47674
- **CFR reference:** 40 CFR 52
- **Publication date:** 1999-09-01
- **Effective date:** 1999-11-01
- **State:** AK
- **EPA docket:** AK-21-1709-a
## Abstract

The Environmental Protection Agency (EPA) approves various amendments to the carbon monoxide (CO) Alaska State Implementation Plan (SIP) for Alaska. These amendments to the Alaska State Air Quality Control Plan are contained in three separate submittals to EPA, dated February 6, 1997, June 1, 1998, and September 10, 1998. The submittals include revisions to Alaska's Air Quality Control Regulations (18 AAC 50), Emissions Inspection and Maintenance (I/M) requirements for Motor Vehicles (18 AAC 52), and Fuel Requirements for Motor Vehicles (18 AAC 53). In addition, the revisions include changing the I/M program schedule for cars subject to I/M from annual to biennial, replacing the CO contingency measures for Anchorage, updating Alaska's General and Transportation conformity programs, and streamlining several portions of the Alaska Air Quality Control Plan for more efficient reading and organization.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/09/01/99-22450/approval-and-promulgation-of-state-implementation-plans-alaska)
---
*AI Analytics · CC0 1.0*