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John Freeman, PE, CME, CPWM

Executive Vice President, Director - Public Services

Vajira Gunawardana, PE, PP, CFM, Fellow-ASCE

Director - Environmental Services & Water Resources

Peter Ciliberto, PE

Director - Land Development

John J. Dziemian, PLS

Director - Surveying Services

Poshu Huang, PE

Director - Information Technology

Ohannes Najarian, MBA

Director - Marketing

Senior Staff

Joseph DiLorenzo, Ph.D.

Senior Scientist - Hydrodynamic Modeling & Consulting

Howard Litwack

Senior Environmental Scientist - Water Quality Modeling & Permit Support

Georgia Marino

Senior Environmental Scientist - Environmental Assessments & Permitting

Robert Schwarzkopf, CHMM, LSRP

Senior Environmental Scientist/LSRP

Chien-Kuo Wei, PE

Chief Engineer - Bridges & Structures

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