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Stormwater Facilities

Managing stormwater runoff and water quality falls to municipalities, developers, and private sector companies who need effective solutions that fit within limited maintenance and capital improvement budgets. We assess your storage, treatment, and monitoring needs. Then, we look for ways to upgrade existing structures, apply non-structural, techniques, or use sustainable practices to fit your constraints while satisfying Total Maximum Daily Load (TMDL) and pollutant removal goals.

Our Expertise

Structural Solutions
We provide planning, design, and construction management of new facilities and renovation of existing facilities. As a full-service engineering team, we have the expertise to understand your maintenance, operational, and regulatory needs and select your optimal solution – one that is effective, improves water quality of runoff, and fits your budget. We’re experienced in meeting challenges to constructing storm drain networks, right-of-way restrictions, utility conflicts, and community opposition.

Non-Structural Solutions and Construction Alternatives
We’re experts in applying non-structural practices, such as rooftop disconnects and natural conservation areas. And we identify alternatives for construction, especially in the implementation of TMDL facilities, to control current project costs and future maintenance.

Stormwater Facilities Solutions

  • Alternative surfaces
  • Best Management Practices (BMP) performance
  • Building modifications (rooftop disconnects)
  • Collection and conveyance (including MS4)
  • Covered and open water reservoirs
  • Integrated runoff treatment solutions (traffic calming, grass islands, bio-swales, micro-bio retention facilities)
  • Non-structural solutions
  • Pavement and modifications (including pervious surfaces)
  • Proprietary structural facilities (StormFilter, Focal Point)
  • Regenerative stormwater conveyance
  • Rooftop storage with controlled release
  • Sand filters
  • Storm drainage system and detention facilities
  • Stream restoration
  • Sustainable plantings for urban environments
  • Traditional drainage systems 
  • Tree plantings/reforestation
  • Underground storage and cartridge treatment systems
  • Water quality and permitting.

Stormwater Facilities Services

Featured Services

  • BMP design
  • Bid and construction phase services
  • Construction management
  • Agency review coordination (federal, state, municipal)
  • E&S/Maintenance of stream flow plans
  • Environmental impacts assessment
  • Erosion and sedimentation control
  • Facility system design, repair, and retrofit
  • Geotechnical investigations
  • Grading and earthwork computations
  • Hydrologic and hydraulic modeling
  • Landscaping design
  • Low impact development/environmental site design 
  • NPDES permit compliance
  • Pavement drainage pattern evaluation
  • Pavement harvesting
  • Permitting
  • Planning
  • Pollutant removal modeling
  • Preliminary studies
  • Public outreach
  • Site layout and geometrics
  • Structural and non-structural stormwater management
  • TMDL compliance documentation
  • Topographic surveys and plans
  • Utility connection and relocation
  • Water quality improvement
  • Watershed management
  • Wetland, significant trees, and forest stand delineations.

Learn More About These Capabilities