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The TerraSure® Team

Chen-Yu Yen, PhD, PE, CHMM Chen-Yu Yen, PhD, PE, CHMM
Chairman of the Board

Suite 300
7133 Rutherford Road
Baltimore, MD 21244
Phone: 443.348.2017
Cell: 443.799.5364
E-mail Chen-Yu

View Chen-Yu's bio
Dr. Yen is Chairman of the Board and the Chief Executive Officer of TerraSure Development, LLC. He is also a director and senior vice president of Gannett Fleming Sustainable Ventures Corporation. Dr. Yen has more than 30 years of professional experience in the environmental field and more than 17 years in the site remediation business. Dr. Yen’s expertise includes treatment processes evaluation, treatability studies, risk assessment, sampling and analysis, statistics and data management, computer modeling, and computer simulation. An innovator and expert in hazardous waste remediation, Dr. Yen has developed a patented chemically assisted biological in-situ process to remediate soils and groundwater contaminated with hexavalent chromium. He currently serves as a science advisor to the Center for Hazardous Substances in Urban Environments located in the Johns Hopkins University at Baltimore, Md.

Dr. Yen holds a bachelor of science in chemistry from National Taiwan University and a master in chemistry and a doctorate in environmental sciences and engineering from the University of North Carolina at Chapel Hill. He is a registered professional engineer in Maryland and Pennsylvania and a certified hazardous materials manager.


Donald G. Morosky, P.E., R.S.Donald G. Morosky, PE, RS
Senior Vice President, Board Member

207 Senate Avenue
Camp Hill, PA 17011-2316
207 Senate Avenue
Camp Hill, PA 17011
Phone: 717.763.7211
E-mail Don

View Don's bio
Mr. Morosky is a Senior Vice President of TerraSure Development, LLC and President of Gannett Fleming Project Development Corporation (GFPDC). GFPDC provides design/build and construction services. Mr. Morosky has more than 40 years of experience in engineering and construction and has managed numerous construction projects, including those associated with site, soil, and/or groundwater remediation of contaminated sites and renewable energy projects. Remediation project services have included site assessment/profiling; acquiring regulatory agency approval of proposed remediation plans/methods; on-site and off-site disposal of contaminated material; and surface restoration. Mr. Morosky currently oversees projects located in California, Florida, Massachusetts, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, and Wisconsin.

Mr. Morosky holds a bachelor of science in civil engineering from the University of Pittsburgh. He is a licensed professional engineer in several states and also possesses contractor licenses in numerous states.


John A. Buchheit, PE, DBIAJohn A. Buchheit, PE, PMI-RMP
Vice President and Program Director, Board Member

207 Senate Avenue
Camp Hill, PA 17011-2316
Phone: 717.763.7211
Cell: 407.744.2709
E-mail John

View John's bio
Mr. Buchheit is a Vice President and Program Director of TerraSure Development, LLC. He also serves as the Corporate Risk Officer for Gannett Fleming, Inc. and has more than 27 years of experience in management and design of large civil infrastructure projects using traditional and alternative delivery methods. In his current role, Mr Buchheit conducts risk evaluations using both deterministic and stochastic modeling, furnishes risk consult on various corporate initiatives, develops risk management plans, and provides oversight on project risk management activities. Reporting directly to the CEO of Gannett Fleming Inc, John also serves as the interface between project risks and the firm's legal and insurance departments while maintaining direct communication with executive management.

Mr Buchheit holds a bachelor of science in civil engineering from West Virginia University. He is a licensed professional engineer in Florida, North Carolina, and Pennsylvania and is also a certified risk management professional.


Brent R. Chapman, PGBrent R. Chapman, PG
Director of Business Development – Eastern Region
Suite 500
4097 Monument Corner Drive
Fairfax, VA 22030
Phone: 703.277.9501
Cell: 703.401.4906
E-mail Brent