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EPA Organizational Structure
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Office of the Administrator
202-564-4700
About OA
Headquarters offices:
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Office of Administration and Resources Management
202-564-4600
About OARM
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Office of Air and Radiation
202-564-7404
About OAR
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Office of Chemical Safety and Pollution Prevention
202-564-2902
About OCSPP
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Office of the Chief Financial Officer
202-564-1151
About OCFO
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Office of Enforcement and Compliance Assurance
202-564-2440
About OECA
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Office of Environmental Information
202-564-6665
About OEI
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Office of General Counsel
202-564-8040
About OGC
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Office of Inspector General
202-566-0847
About OIG
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Office of International and Tribal Affairs
202-564-6600
About OITA
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Office Research and Development
202-564-6620
About ORD
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Office of Solid Waste and Emergency Response
202-566-0200
About OSWER
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Regional offices around the nation:
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