Stormwater Engineering

Stormwater Engineering

Stormwater Engineering From Kessi Engineering and Consulting

Even when rainfall records aren’t being broken, stormwater management is major issue concern for all sites, especially in the Northwest. At Kessi Engineering and Consulting we’re experts in stormwater engineering, design and modeling. We have over two decades of experience in designing and engineering practical and cost effective stormwater drainage solutions that meet both the regulations and our clients’ needs. Our designs are economically and environmentally friendly, reducing polluted stormwater runoff and lowering your project’s long-term impact on the surrounding environment. Our stormwater engineering services and capabilities include:re and call (360) 991-9300 or contact us today.

  • Stormwater Master Planning and Basin Planning
  • Innovative and cost effective stormwater design and planning
  • Implementing the Stormwater Management Manual to meet current regulatory requirements
  • Natural and structural drainage structure and conveyance system design
  • Detention pond design, wet pond design, and stormwater pollution control facility design
  • Complete integrated stormwater drainage system design services
  • Bio-Retention, Bioswale, Rain Gardens, GreenStreets, Compost-Amended Biofiltration Swale (CABS)
  • Permeable Pavers, Porous Pavement, Rainwater Harvesting, and Green Roof Design to help meet LEED certification
  • Flood Plain Studies and Permitting and HEC-RAS Modeling
  • Western Washington Continuous Simulation Hydrology Model - WWHM
  • HydroCad and MGSFlood Modeling
  • Computing Facility Flow Duration Compliance per the 2012 Ecology Manual
  • Erosion Control Plans and best managment practices (BMP) to stabilize soil erosion and minimize flooding
  • Grading Plans that implementing sediment, erosion, and pollution prevention control measures
  • NPDES Construction Stormwater General Permit for Department of Ecology and DEQ
  • Permits for the clearing, grading, and excavating activities that disturb one or more acres and discharge stormwater to surface waters of the state
  • SWPPP - Stormwater Pollution Prevention Plans and Permits
  • Low Impact Development (LID) Stormwater Design
  • Pond and Infiltration Trench sizing and optimization, Grattix
  • Simulation and modeling of complex stream channels and floodplains
  • Wetland Hydroperiod Analyses and Water Quality Treatment Design (Volume and Discharge rate)
  • Computing and Graphing Streamflow frequency, duration statistics, and hydrographs
  • Creating storm hydrographs to routing programs such as SWMM Extran
  • Seasonal Flood Frequency and Duration Statistical Design used for Construction Management

Let Kessi Engineering and Consulting provide solutions to your stormwater problems.
Call (360) 991-9300 or contact us today.