# Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes: Washington
> **Rule** · Direct final rule. · Published 2001-03-13 · Effective 2001-05-14 · 66 FR 14492
## Document
- **Document number:** 01-6082
- **Category:** air-emissions
- **Federal Register citation:** 66 FR 14492
- **CFR reference:** 40 CFR 52
- **Publication date:** 2001-03-13
- **Effective date:** 2001-05-14
- **State:** WA
- **EPA docket:** WA-72-7147a
## Abstract

The Environmental Protection Agency (EPA or Agency) approves the maintenance plan and request for redesignation from nonattainment to attainment for three Washington areas in the Puget Sound region, (Kent, Seattle, and Tacoma) that are currently designated nonattainment for suspended particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers (PM-10).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/03/13/01-6082/approval-and-promulgation-of-implementation-plans-and-designation-of-areas-for-air-quality-planning)
---
*AI Analytics · CC0 1.0*