Silva Cells - Aurora Phase II Is Top Project

Monday, May 31, 2010

City of Shoreline Aurora Project Silva Cell Installation. Photo courtesy City of Shoreline.

By Janet Way

Shoreline's Aurora Phase II Project is now the largest ever use in state of "Silva Cell" Deeproots System for tree planting.

The concept is designed to allow the street trees to thrive and let their roots expand without disrupting sidewalks or pavement. Street trees traditionally have a difficult time because of the conflicts that will result with adjacent paved areas. This technique allows the trees to grow naturally, because of the surrounding gravel beds and pervious sidewalks, which are supported by the "cells". It also combines stormwater runoff infiltration technology and water quality benefits.

The City of Shoreline is undertaking a huge remodel on the second phase of the Aurora Project with additional state of the art technologies to better address stormwater issues. The Shoreline City Council approved the "Hybrid Plan" Phase II project unanimously in 2007, and one of the major factors in arriving at a consensus was inclusion of this suite of Stormwater Control techniques. The Silva Cell Deeproot System is just one of many technologies being utilized including natural stormwater treatments such as pervious pavements and filtration concepts. The business community worked with the City to achieve working solutions to connect the highway to local businesses. The project is supported by grant funding from the State and Federal governments.

Providing Street Trees and landscaping was one of the goals of the project along with BRT (Bus Rapid Transit), safety and improved pedestrian facilities. Silva Cells are a great way to achieve this goal and allow the trees to prosper. That way they will hopefully avoid the fate of other street trees in our community recently.


jackt June 1, 2010 at 8:13 PM  

I'd love to see a follow up article that shows where the trees go and where their roots go. A direct comparison of the failed system to this new improved system with drawings would be superb. I'm an accomplished design engineer an I didn't see enough information in this article to visual the miracle.

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