Approval and Promulgation of Implementation Plans; Spokane, Washington: Second 10-Year PM10 Limited Maintenance Plan
air-emissions · Rule · Published 2016-04-12 · Effective 2016-05-12 · WA · 81 FR 21470
Document
Document number
2016-08272
Federal Register citation
81 FR 21470
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2016-04-12
Effective date
2016-05-12
State
WA
EPA docket
EPA-R10-OAR-2016-0003
Abstract
The Environmental Protection Agency (EPA) is approving the limited maintenance plan submitted on January 4, 2016, by the State of Washington for the Spokane area, which includes the cities of Spokane, Spokane Valley, Millwood and surrounding unincorporated areas in Spokane County, Washington. This plan addresses the second 10-year maintenance period for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>). A limited maintenance plan is used to meet Clean Air Act requirements for formerly designated nonattainment areas that meet certain qualification criteria. The EPA determined that Washington's submittal meets the limited maintenance plan criteria. The Spokane area currently has monitored PM<INF>10</INF> levels well below the National Ambient Air Quality Standards (NAAQS) and levels have not increased since the area was redesignated to attainment in 2005. The EPA is also approving minor updates to the Spokane Regional Clean Air Agency (SRCAA) regulations controlling PM<INF>10</INF> related to the maintenance plan.