1-360-491-3399 skillings@skillings.com

Stormwater runoff is the leading source of water contamination in the U.S. according to the U.S. EPA. Projects in the public and private sectors must prevent, control, and treat stormwater.  We have the expertise and experience to meet today’s stormwater regulations with flexible, cost-effective solutions.

From designing a range of stormwater treatment facilities utilizing the latest in stormwater technologies we believe in  developing groundbreaking stormwater and Low Impact Development (LID) designs for municipalities, our engineers and scientists are committed to teaming with clients and regulators to develop implementable solutions that conserve and enhance our natural resources.


  • Civil/Site Engineering Design
  • Hydrologic and Hydraulic Modeling
  • GIS Analysis and Mapping
  • Flood Assessments
  • Drainage Studies and Design
  • Pollutant Loading and TMDL Assessments
  • Stormwater Pollution Prevention Plans (SWPPP)
  • Stormwater Management Plans


  • Erosion and Sedimentation Control Plans
  • Stormwater Best Management Practices (BMPs)
  • Low Impact Development
  • Municipal (MS4) Stormwater Compliance
  • NPDES Stormwater Permitting and Compliance
  • Stormwater Sampling
  • Stormwater Systems and BMP Operation and Maintenance Plans