Abbott Laboratories

Belt Railway Company of Chicago

Blank, Wesselink, Cook & Associates, Inc.

Camp Dresser & McKee, Inc.

Chicago Community Trust

Clarion Development Inc.

CTA/Environmental

Gardner, Carton & Douglas

Golf Enterprises, Inc.

Hamilton Financial Group

Home Depot

Hyatt Development Corp.

Knight Architects Engineers Planners, Inc.

Lake County Grading

Landrum & Brown

LaSalle Partners

Mackie Consultants, Inc.

McDonough Associates Inc.

McMahon Associates, Inc.

Meridian Development, Inc.

Mills Corporation

National Audubon Society

National Survey & Engineering

Otis Associate, Inc.

Parsons Engineering Science, Inc.

Patrick Engineering

Prentiss Properties Limited, Inc.

R.A. Smith and Associates

S.C. Johnson & Sons

Scarsdale Homes

Sears, Roebuck and Co.

Smith Engineering

Stein and Company

The Prime Group

The Wetlands Initiative

Town & Country Homes

Towne Development

Wedgewood Partners

Western Development Corporation

Westfield Homes, Inc.

Wetlands Research Inc.

Chicago Park District

City of Beloit

City of Chicago, Department

of Aviation

City of Chicago, Department

of Environment

City of Crystal Lake

City of Highland Park

City of Madison

City of Milwaukee

City of Watertown

City of Woodstock

City of Waukesha

DuPage County Public Works Department

Fox Lake Inland Lake Protection and Rehabilitation District

Illinois Department of Natural Resources

Illinois Department of Transportation

Illinois Division of Water Resources

Illinois Environmental Protection Agency

Lake County Forest Preserve District

Milwaukee County

Milwaukee Metropolitan Sewerage District

Mundelein Parks and Recreation District

Northeastern Illinois Planning Commission

U.S. Army Corps of Engineers

U.S. Environmental Protection Agency

U.S. Fish and Wildlife Service

Village of Germantown

Village of Gurnee

Village of Mundelein

Village of Northbrook

Village of Palatine

Village of Riverwoods