# Approval and Promulgation of Implementation Plans; Washington: Thurston County Second 10-Year PM10 Limited Maintenance Plan
> **Rule** · Final rule. · Published 2013-10-03 · Effective 2013-11-04 · 78 FR 61188
## Document
- **Document number:** 2013-23511
- **Category:** air-emissions
- **Federal Register citation:** 78 FR 61188
- **CFR reference:** 40 CFR 52
- **Publication date:** 2013-10-03
- **Effective date:** 2013-11-04
- **State:** WA
- **EPA docket:** EPA-R10-OAR-2013-0088: FRL-9901-34-Region 10
## Abstract

The EPA is approving a limited maintenance plan submitted by the State of Washington on July 1, 2013, for the Thurston County maintenance area (Thurston County) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>). The EPA is also approving both local and state regulatory updates related to this maintenance plan.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/03/2013-23511/approval-and-promulgation-of-implementation-plans-washington-thurston-county-second-10-year-pm10)
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