– Silva Cells helped Toronto to meet its Green Standard Goals, managing 55% of the stormwater catchment area in a 6.47-hectare site. – Over 300 trees were planted, each with an average of 30m3 of soil. – Significant pollutants removed: 46% annual runoff removed, 74% total phosphorus removed, 83% annual (TSS) total suspended solids removed, and… More
The City of Toronto has been a pioneer for important public policy initiatives such as one of the first Municipal Soil Volume Standards for street trees, a ground breaking Best Practices Manual for Hardscape Street Tree Planting. All of this was done through a cross departmental collaborative approach, and began with the Queensway project, which… More
A common concern when integrating street runoff into a Silva Cell system is the effect that deicing salt may have on trees. In areas with cold winter climates, we commonly see salt damage to street trees. Deicing salt from roads is picked up by stormwater runoff and enters tree pits. Often, roots are damaged when… More
In July, this blog posted about the disagreement among citizens in Portland, OR over proposed changes to their urban tree ordinances. At its heart, the conflict in Portland seems to center on whether the city government should have jurisdiction over privately owned trees. The majority of the commenters on the article felt that the city’s… More
Soil. Stormwater. Sustainable Infrastructure.
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