Stormwater Treatment Sitework in Sammamish, WA

This Sammamish project called for a specialized piece of stormwater infrastructure, a 54-inch CONTECH StormFilter manhole, set at a precise location and elevation to work correctly within the site's broader stormwater management system. The challenge wasn't the structure itself so much as getting the excavation exactly right, since a component of that size only performs as intended if it's seated at the correct depth and dimensions from the start.

Our team excavated to the required specifications and set the StormFilter manhole at the exact location and elevation the design called for, coordinating closely to keep the schedule tight and accurate. The precision needed for a structure this size meant careful attention throughout, but the full excavation and installation wrapped in two days. The completed structure now provides the stormwater treatment the project required, on a budget of $10,000.