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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

Robert Schwarzkopf, CHMM, LSRP

Director - Site Remediation Services

Brad Thompson, PE

Director - Land Development

Poshu Huang, PE

Director - Information Technology

Ohannes Najarian, MBA

Director - Marketing and Communications, Business Development

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

Chien-Kuo Wei, PE

Chief Engineer - Bridges & Structures

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