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Line 288: − − To read about the use of soil cell systems in the GTA please take a look at the following STEP report on the [https://sustainabletechnologies.ca/app/uploads/2018/10/Queensway-Case-Study_FINAL.pdfThe Queensway Sustainable Sidewalk Pilot Project]. The project found that Stormwater Tree Trenches are not only able to increase the urban street canopy coverage, while impacting minimal surface area below, but numerous stormwater benefits associated with TSS removal and heavy metal contaminant removal. Finally, the study found that the feature was also able to reduce stormwater volumes leaving the street tree system and promoted increased LID use in a heavily urbanized setting without increased maintenance costs associated with other daylighted bioretention swales.<ref>STEP. 2018. he Queensway Sustainable Sidewalk Pilot Project - Case Study: Low impact Development Series. https://sustainabletechnologies.ca/app/uploads/2018/10/Queensway-Case-Study_FINAL.pdf.</ref>
→Soil cells
*Structures are designed to be filled with growing medium for tree rooting and support a vehicle loaded pavement up to and including AASHTO H-20 and Ontario Building Code standards for sidewalks.
*Structures are designed to be filled with growing medium for tree rooting and support a vehicle loaded pavement up to and including AASHTO H-20 and Ontario Building Code standards for sidewalks.
*Critical to modular soil support system design is that each structure or layer of structures be independent of all adjacent ones, such that one or multiple layers can be removed to facilitate future utility installation or repair.
*Critical to modular soil support system design is that each structure or layer of structures be independent of all adjacent ones, such that one or multiple layers can be removed to facilitate future utility installation or repair.
==Performance==
==Performance==