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Title EPA has reduced its backlog of state implementation plans submitted prior to 2013 but continues to face challenges in taking timely final actions on submitted plans / U.S. Environmental Protection Agency, Office of Inspector General.

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Washington, D.C. : U.S. Environmental Protection Agency, Office of Inspector General, 2021.

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Description	1 online resource (35 pages) : color illustrations, color maps.
	text txt rdacontent
	computer c rdamedia
	online resource cr rdacarrier
Series	Report ; no. 21-E-0163
	United States. Environmental Protection Agency. Office of the Inspector General. Report ; no. 21-E-0163.
Note	"June 14, 2021."
	Accompanied by summary report with title: At a glance.
Bibliography	Includes bibliographical references.
Note	Description based on online resource; title from PDF cover (EPA, viewed on October 26, 2021).
Subject	Air quality -- Standards -- United States.
	Air quality management -- Standards -- United States.
	Atmospheric ozone -- Standards -- United States.
	Air -- Qualité -- Normes -- États-Unis.
	Air -- Qualité -- Gestion -- Normes -- États-Unis.
	Ozone atmosphérique -- Normes -- États-Unis.
	Air quality management -- Standards. (OCoLC)fst00802566
	Air quality -- Standards. (OCoLC)fst00802527
	Atmospheric ozone -- Standards. (OCoLC)fst00820472
	United States. (OCoLC)fst01204155 https://id.oclc.org/worldcat/entity/E39PBJtxgQXMWqmjMjjwXRHgrq
Note	At head of title: Improving air quality
Added Title	Environmental Protection Agency has reduced its backlog of state implementation plans submitted prior to 2013 but continues to face challenges in taking timely final actions on submitted plans
Gpo Item No.	0431-Z-06 (online)
Sudoc No.	EP 12.15:21-E-0163