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Below are lists of some of the agencies/companies that Testwell Laboratories, Inc. provides services for:

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Institutions & Government Agencies Construction Managers/General Contractors
Owner/Developers Engineers & Architects

INSTITUTIONS & GOVERNMENT AGENCIES
Brooklyn Museum of Art
Connecticut Department of Administrative Services
Dormitory Authority of the State of New York
MTA/Long Island Railroad
New York Botanical Gardens
New York City Department of Design & Construction
New York City Department of Parks and Recreation
New York City Housing Authority
New York City School Construction Authority
New York City Transit Authority
New York Power Authority
New York Public Libraries
New York State Office of General Services
New York State Thruway Authority
Port Authority of New York and New Jersey
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OWNER/DEVELOPERS

Albanese Development
Beth Abraham Architects
Brause Realty
Collins Enterprises, LLC
Columbia University
Con-Ed
Davis & Partners, LP
Durst Organization
FedEx
Glenwood Management
Grid Properties
LCOR
New York Presbyterian Medical Center
New York University
Perlbinder Realty
Pirot & Associates
Pistilli Construction & Development Corporation
Related Properties
Rose Associates
Rudin Management Company
Silverstein Properties
Trump New World Project Management
Vornado Realty Trust
Williams Island
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CONSTRUCTION MANAGERS/GENERAL CONTRACTORS
Advocate Consulting Group
AMEC
Andron Construction
Apple Builders
Barbella Environmental
Barney Skanska
Bovis Lend Lease, Inc.
F.J. Sciame Construction Company
Gardiner & Theobald
Gilbane Building Company
Gilbane Construction
Glenman Construction
Gotham Construction
Hanscomb Associates
HLW, International
J. Hill Management, LLC
J.A. Jones Construction Company
Jet Drive General Marine Construction Company, Inc.
John P. Picone, Inc.
Koch Skanska
LaQuila Construction
Lehr Construction
Modern Continental Construction Company, Inc.
Nab Construction
Pavarini McGovern
Plaza Construction
Quartararo & Associates
Samson Construction
Schiavone Construction
Shawmut Design and Construction
Slattery Skanska
Spectraserv, Inc.
StructureTone, Inc.
TDX Construction Corporation
Tishman Construction Corporation
Trataros Construction
Turner Construction Company
VJB Construction Company
Yonkers Contracting
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ENGINEERS & ARCHITECTS
Architectural Alliance
Baker Engineering NY, Inc.
Berger Lehman Associates, P.C.
Beyer Blinder Belle
Bostwick Purcell Architects
C. G. Engineers
C. T. Male Associates, P.C.
Concessi Engineering
Daniel Frankfort PC Consulting Engineers
David Weibolt Architects
DeSimone Chaplin Dobryn Engineers
DeSimone Consulting Engineers
DMJM-Harris, Inc.
Fernandez Architects
Flour City Architectural Metals
Fox and Fowl
Francois de Menil Architects. P.C.
Ghandi Engineering
Gluckman Mayer Architects
Gwathmey Siegel & Associates, LLC
Hall Partnership Architects, LLP
Hardy Holtzman Pfeiffer Associates
Harza Engineering
Helpern Architects
Jack Goldstein Construction Engineering
Jacobs Engineering
James R. Gainfort, AIA Consulting Architects
K. S. Engineers
Kagan Stewart Robotham Architects, P.C.
Kallen & Lemelson, Consulting Engineers
Keyspan Engineering Associates, Inc.
Kohn Pederson Fox
Kouzmanoff Partnership Architects
Langan Engineering & Environmental Services, Inc.
Langan Engineering & Environmental Services, Inc.
LiRo Engineering & Construction Management, P.C.
Louis Berger Group, Inc.
LZA Technology, Inc.
M.G. Architects
Manuel Glass Architects
Merritt Engineering
Mitchel Girgola Architects
Mueser Rutledge
Raphael Bassan Consulting Engineers
Raytheon Engineers & Construction, Inc.
Robert Silman Consulting Engineers
Rosenwasser Grossman Engineers
RSD Engineering, P.C.
Schuman Litchenstein Claman Efron
Selnick Harwood Engineers
Severud Associates
Skidmore Owings Merrill
Stonehill & Taylor Architects & Planners
STV Construction Services, Inc.
Superstructures, Inc.
The Sage Group
The Tyree Organization
Theo David Architects
Thomas O'Hara Architects
Thornton Tomasetti
Urban Foundation Engineers, LLC
Vollmer Associates
Weirful & Associates
William A. Truss Engineering
Ysrael A. Seinuk, P.C.
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