Principals
Our Team
Donald E. Manhard, Jr., P.E.
President
Professional Registration
• Registered Professional Engineer, State of Illinois #43931, 1987
• Registered Professional Engineer, State of Wisconsin #26912, 1990
• Registered Professional Engineer, State of Indiana #1930060, 1992
• Registered Professional Engineer, State of Colorado #33464, 1999
• Registered Professional Engineer, State of Arizona #34860, 2000

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1982

Professional Affiliations
• American Consulting Engineers Council
• Consulting Engineers Council of Illinois
• Home Builders Association of Greater Chicago
Donald E. Manhard, Sr., P.E.
Consultant
Professional Registration
• Registered Professional Engineer, State of Illinois #20922, 1959

Education
• Northwestern University, Bachelor of Science/Civil Engineering, 1957

Professional Affiliations
• National and Illinois Society of Professional Engineers
• American Consulting Engineers Council
• Consulting Engineers Council of Illinois
• Lake County Board of Health Member
• Riverside Foundation Board Member
Peter E. Manhard, P.E.
Vice President
Professional Registration
• Registered Professional Engineer, State of Illinois #43187, 1986

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1981

Professional Affiliations
• American Consulting Engineers Council
• Consulting Engineers Council of Illinois
• Home Builders Association of Lake County
Glenn M. Christensen, A.S.L.A
Senior Planner
Professional Registration
• Professional Landscape Architect, State of Illinois #157-000223
• Professional Landscape Architect, State of Wisconsin #172-014, 1995

Education
• University of Illinois, Bachelor of Landscape Architecture, 1974

Professional Affiliations
• American Society of Landscape Architects
• Urban Land Institute
Frances Fazio, P.E.
Project Manager
Professional Registration
• Registered Professional Engineer, State of Illinois #46202, 1990
• Registered Professional Engineer, State of Wisconsin #29737, 1993

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1986
James J. Frayn, P.E.
Vice President
Professional Registration
• Registered Professional Engineer, State of Illinois #048376, 1993

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1985

Professional Affiliations
• Home Builders Association of Northern Illinois
Jeffrey T. House
National Director of Water Resources
Professional Affiliations
• American Water Resources Association
• Association of State Floodplain Managers
• Georgia Water & Pollution Control Association
William J. Hupperich, P.E.
National Director of Engineering
Professional Registration
• Registered Professional Engineer, State of Illinois #048366, 1993
• Registered Professional Engineer, State of Wisconsin #33254, 1999
• Registered Professional Engineer, State of Colorado #33612, 1999

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1988
Timothy J. Murphy, P.L.S.
Surveyor / Project Manager
Professional Registration
• Professional Land Surveyor, State of Illinois #2870, 1987
• Professional Land Surveyor, State of Indiana #29900006, 1998
• Professional Land Surveyor, State of Wisconsin #S-2478, 1999

Education
• College of Lake County, Associates Degree in Surveying, 1986

Professional Affiliations
• Illinois Professional Land Surveyor Association
Timothy T. Nelson, A.P.A, A.S.L.A
National Director of Planning and Landscape Architecture
Professional Registration
• Professional Landscape Architect, State of Illinois #157000506, 1993
• Professional Landscape Architect, State of Wisconsin #114, 1995
• Professional Landscape Architect, State of California #4578, 2001
• Professional Landscape Architect; State of Nevada Lic. # 672, 2006

Education
• University of Wisconsin, Bachelor of Science, 1989

Professional Affiliations
• American Planning Association (APA)
• American Society of Landscape Architects (ALSA)
• Illinois American Society of Landscape Architects
• Colorado American Society of Landscape Architects
Tracy T. Richard, P.E.
Project Manager
Professional Registration
• Registered Professional Engineer, State of Pennsylvania #29735E, 1980
• Registered Professional Engineer, State of New York #58211, 1981
• Registered Professional Engineer, State of Illinois #41980, 1984
• Registered Professional Engineer, State of Indiana #19300284, 1993
• Registered Professional Engineer, State of Wisconsin #29478, 1993
• Registered Professional Engineer, State of Ohio #63674, 2000

Education
• Marquette University, Bachelor of Science/Civil Engineering, 1974
Bruce Tully
National Director of Environmental Services
Professional Registration
• National Registry of Environmental Professionals ( NREP)
• Registered Environmental Assessor (REA)

Education
• University of Illinois, Bachelor of Science in Urban Planning, 1969
• University of Wisconsin, Master of Science in Landscape Architecture, 1972
Stephen L. Winnike, P.E.
Vice President
Professional Registration
• Registered Professional Engineer, State of Illinois #50138, 1995

Education
• Iowa State University, Bachelor of Science/Civil Engineering, 1990

Professional Affiliations
• Home Builders Association, McHenry County
• Southwest Suburban Home Builders Association
Dave P. Withaar, P.L.S
National Director of Surveying
Professional Registration
• Registered Professional Land Surveyor, State of Illinois #3357, 2000

Professional Affiliations
• Illinois Professional Land Surveyors Association
Philip J. Wolf, P.E.
Project Manager
Professional Registration
• Registered Professional Engineer, State of Illinois #62-53190
• Registered Professional Engineer, State of Indiana #10001072

Education
• University of Illinois, Bachelor of Science/Civil Engineering, 1978

Professional Affiliations
• American Society of Civil Engineers
• Illinois Society of Professional Engineers
For a complete list of principal staff, please feel free to contact us at (847) 634-5550.