Stormwater Management Design
Water Quality Design · Water Quantity Design · Environmental Site Design
Water Quality Design
- Environmental Site Design
- Manufactured Designs, Hydrodynamic Separators, Cartridge Systems, Tree Box Filters
- Underground/Above Ground Filtering Practices
- Wet/Extended Detention/Combination Ponds
- Dry/Wet Swales, Enhanced Channels
- Green Roofs, Rainwater Harvesting, Permeable Pavement
- Bioretentions, Constructed Wetlands
- Vegetated disconnections, filter strips, soil amendments
Water Quantity Design
- Detention Ponds, Combination Ponds
- Hydraulic Structures Design: flow splitters, combined and separated spillways involving risers, concrete weirs, vegetated and stone spillways/channels
- Plastic/CMP/RCP chamber detention systems
- Precast or Modular underground detention systems
- Custom cast-in place detention vaults
- Erosion Sediment Control, Channel Protection, Flood Protection
Major and Minor Drainage Design
- Channels/Ditches and Storm Sewer conveyance systems
- Arch, Elliptical, Cylindrical, Box Culverts
- Highway Storm Design, Roadway Storm Design
- Park and Rides, Municipal/Local, State and Federal Design
- Commercial, Mixed Use Design; Rural, Urban, Suburban Design
- Private Development, Residential, Large/Small Subdivision Design
- Floodplain hydraulic modeling, mapping, studies; CLOMR/LOMR FEMA processing
Compliance Criteria
- EISA 438 Federal Compliance
- Virginia Department of Environmental Quality (DEQ)
- Virginia Department of Transportation (VDOT)
- Loudoun County, Fairfax County, Arlington County, Prince William County
- Town of Purcellville, Town of Leesburg, Town of Lovettsville
- Tysons Corner Comprehensive Retention, Volume Reduction, and Peak Flow Reduction Requirements
- Reston Comprehensive Volume Reduction, Peak Flow Reduction and New Development Requirement
- LEED Sustainable Sites Water Quality and Quantity Criteria