New York City Department of Environmental Protection
Bronx, New York
The Willow School
Gladstone, New Jersey
U. S. Army Corps of Engineers, New York District
Beaches along the Atlantic Ocean and Raritan Bay, New Jersey
Nereid Boat Club
Rutherford, New Jersey
Montgomery County Department of Environmental Protection
Montgomery County, Maryland
City of Cuyahoga Falls
Summit County, Ohio
Hawthorne Valley Farm/Hawthorne Valley Association
Harlemville/Ghent, New York
Cuyahoga County Planning Commission
Cleveland, Ohio
Santa Fe County
Edgewood, New Mexico
Los Angeles County
La Cañada Flintridge, California
Town of Somers
Westchester County, New York
Northeast Ohio Regional Sewer District
Cleveland, Ohio
Chagrin River Watershed Partners
Erie, Cuyahoga, & Lake Counties, Ohio
Blue Water Baltimore
Baltimore, Maryland
Baltimore, Maryland
Awbury Arboretum
Philadelphia, Pennsylvania
Boy Scouts of America
Fayette County, West Virginia
Boy Scouts of America
Fayette County, West Virginia
City of Fairlawn
Fairlawn, Ohio
Baltimore County Department of Environmental Protection and Sustainability
Baltimore County, Maryland
Baltimore County Department of Environmental Protection and Sustainability
Baltimore County, Maryland
Baltimore County Department of Environmental Protection and Sustainability
Baltimore County, Maryland
Baltimore County Department of Environmental Protection and Sustainability
Baltimore County, Maryland
Baltimore County Department of Environmental Protection and Sustainability
Baltimore County, Maryland
University of North Carolina Charlotte
Charlotte, North Carolina
Philadelphia Water Department
Philadelphia, Pennsylvania
Howard Hughes Corporation
Columbia, Maryland
Commonweal Conservancy
Santa Fe County, New Mexico