Using low-impact development techniques, Perteet designed the storm water system for the Convention Center that provided a $300,000 cost savings when compared to conventional drainage techniques.

The Lynnwood Fire Department has some of the heaviest fire trucks available. Because they could sink into the ground if a conventional vault was used for storm drainage management, our staff had to find an innovative solution. A preliminary geotechnical report performed at the site determined that permeable soils existed 22 feet below the clay-like “Alderwood Soils.” Perteet engineers suggested that, instead of a reinforced vault, a low-impact development technique be applied and an underground gravel gallery used to allow for stormwater infiltration. The gravel gallery would infiltrate all stormwater off current and future development of the Lynnwood Convention Center. This solution saved the client $280,000, and the project recently received a silver award from ACEC for Original or Innovative Application of New or Existing Techniques.