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Our clients face many water resource, site management and infrastructure challenges. The Water Resources and Engineering Group at Duffield Associates utilizes our technical expertise, our relationship with regulators, and our knowledge of the regulatory process to help our clients meet those challenges.

We strive to provide timely cost effective solutions. We are committed to finding
solutions that benefit our clients. Those solutions may include engineered systems,
partnering with government, teaming with private stakeholders, applying for grants, and identifying potential funding sources.

The services that we offer to address those challenges include:
  • Flood Studies/Analyses
  • Water Resource Protection Area Evaluations
  • Hydrogeologic Evaluations
  • Resource Extraction & Mining
  • Stormwater Management
  • Drainage Studies
  • Permitting
  • Dam Studies and Design
  • Stream Restoration/Stabilization
  • Geographical Information Systems
  • Forensic Engineering
  • Hydraulic Design
  • Water/Wastewater Infrastructure
  • Wetlands Studies/Mitigation
  • Water Supply Studies
  • Surface Water Modeling
  • Redevelopment

Our areas of expertise include the following LEED activities:

  • Stormwater Design - quantity and quality engineering using best management practices including bioretention areas, bio-swales, infiltration systems, porous pavements, pollutant source control and TMDL compliance.
  • Construction Activity Pollution Prevention - erosion and sedimentation control plans including NPDES program compliance
  • Innovative Wastewater Technologies - drip/spray system and Rapid Infiltration Basin (RIB) modeling, design, construction and management, design of gray water irrigation systems.
Wilmington, DE       Georgetown, DE        Philadelphia, PA        Carlisle, PA         Stone Harbor, NJ       North East , MD