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Prince George's County, MD Prince George's County, MD 

Department of Environmental Resources (DER)

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Adam Ortiz

Adam Ortiz
Acting Director


9400 Peppercorn Place
Suite 500
Largo, Maryland 20774
Tel: (301) 883-5810
Fax: (301) 883-5444

Hours: Monday -Friday
8:00 a.m. to 5:00 p.m.

The mission of the Department of Environmental Resources is to protect and enhance the natural and built environments of Prince George's County by enforcing Federal, State and County laws to create a healthy, safe and aesthetically pleasing environment for all residents and businesses of the County.

DER Videos

Programs and Services

DER Organizational Chart

Thank you for visiting the Department of Environmental Resources' web page. I hope you will come back often.

For more information on the Regional Air Quality Program, please visit: Clear Air Partner site

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