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A responsive, creative and cost effective solution to every water and natural resource challenge is Duffield Associates' commitment. Our Water and Natural Resources Group combines our technical expertise, comprehensive knowledge of the regulatory process and requirements, and long standing relationship with regulators. We bring innovative and workable solutions to our clients' projects. With a range of solutions that include engineered systems, partnering with government, teaming with private stakeholders, applying for grants, and/or identifying potential funding sources, we are committed to meet our clients' objectives and expectations while implementing environmentally sensitive and sustainable solutions.

The services that we offer to address those water resource challenges include:

  • Stormwater Management Analysis and Design
  • Watershed Studies and Management Plans
  • Surface Water Modeling and Flood Studies/Analyses
  • NPDES permitting and compliance
  • Water Resource Protection Area Evaluations
  • Hydrogeologic Evaluations
  • Drainage Studies and Hydraulic Design
  • Innovative Wastewater Technologies
  • Forensic Engineering
  • Water Supply Studies
  • Natural Resource Inventories/Habitat Assessments
  • Dam Impacts and Removal Assessments
  • Stream Characterization/Restoration/Stabilization
  • Wetlands Assessment/Classification/Restoration
  • Lake/Pond/Waters Assessments/Restoration
  • Floodplain and Beach/Dune Restoration
  • Forest/Meadow Restoration
  • Protected Species Surveys/Management Plans
  • Mitigation Banking
  • Permitting (Federal, State, Local)
  • Geographic Information Systems (GIS)

Our areas of expertise include the following LEED activities:

  • Sustainable Stormwater Design - Runoff quantity and quality engineering using best management practices including bioretention areas, vegetated swales, infiltration systems, porous pavements, and rainwater capture and reuse strategies. Duffield Associates also can assist with permitting for pollutant source control and TMDL compliance.
  • Habitat Restoration - Wetland delineations, existing vegetation inventories, stream and lake restorations, and riparian buffer rehabilitation
  • Open Space Maximization - Natural resource preservation and protection, wetland mitigation and pond design
  • Water Efficient Landscaping/Water Conservation - Native species plant selection for minimal water usage, capture and reuse of stormwater and gray water for irrigation.

For more information on our Water and Natural Resources services, contact:

David J. Athey, P.E.
Water Resources Section Manager
Duffield@duffnet.com

 

Wilmington, DE       Georgetown, DE        Philadelphia, PA        Carlisle, PA         Cape May Court House, NJ       North East , MD