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Tidewater is proud to offer traditional and innovative environmental and infrastructure solutions around the world.


Tidewater was founded in 1983 as an environmental support services provider in Baltimore, Maryland. As a growing small disadvantaged business focused initially on environmental services, we entered the SBA 8(a) Program in 2004 after gaining valuable experience and building a formidable team of professional. This created unprecedented new growth where today our 140+ employees perform work across two product lines and three divisions. Headquartered in Elkridge, Maryland, we currently have three offices throughout the United States with additional personnel located in Japan, Korea, and Germany.

We are proud to offer our clients and business partnerships an employee base that includes a dynamic mix of industry experts and hands-on field personnel. This includes program managers, engineers, geologists, scientists, health physicists, health and safety specialists, construction estimators, and IT/database/graphics specialists. It also includes site superintendents, certified tank inspectors, licensed drillers, radiological technicians, lead/mold/asbestos assessors, HVAC licensed and certified personnel, and general technicians in a multitude of disciplines.


President and CEO
Prasad Dissanayake, PE

Vice President Environmental Product Line and Manager Environmental Division
Keith Fields, PE, PMP

Vice President Infrastructure Product Line and Manager Facilities Division
Jim Abbott, PMP

Vice President and Manager Construction Division
Fergus Donaldson, PE, PMP

Chris Johns, CPA

Contracts Manager
David Morrill, CFCM

Manager Human Resources
Sandee Goldstein

Vice President and Manager Radiological Division
James Reese, CHP, RRPT

Vice President Environmental Product Line Integration
John Wykoff, PG

Manager Industrial Health and Safety Division
Jon Schatz