Duffield Associates

Duffield Associates, an award-winning geoscience consulting firm, was established in 1976 and has grown to include a professional and technical staff of over 90 individuals. The firm's headquarters are located in a historic barn and farmhouse in Pike Creek Valley outside of Wilmington, Delaware. We have regional offices in Georgetown, Delaware, Philadelphia and Carlisle, Pennsylvania, Cape May Court House, New Jersey, and North East, Maryland.

Duffield Associates practices extensively in the areas of:
 Geotechnical Engineering
 Water and Natural Resources
 Environmental Services
 Civil Engineering
 Structural Engineering
 Construction Services
 Coastal/Waterfront Engineering
 Permitting Assistance

Represented on staff are Civil Engineers, Hydrogeologists, Environmental Engineers and Scientists, Geotechnical and Construction Engineers, Structural Engineers, Coastal and Hydraulic Engineers and Scientists, Geologists, Wetlands Scientists and a technical support staff.

Duffield Associates also has an AASHTO and USACE accredited soils and concrete testing laboratory and contemporary specialized field sampling and testing equipment.

The firm has undertaken over 12,000 projects for more than 2,500 different clients including government, industry, construction, and professional clients.

Specialties

Environmental Services, Water and Ecological Resources, Geotechnical Engineering, Structural Engineering, Coastal/Waterfront Engineering, Construction Services and Permitting Assistance