Determining whether Ecotrust has accomplished its intent to divert 95% of the stormwater that falls on its site from the city sewer would require monitoring the connection to the sewer during at least the entire rainy season (October through June). Because the short time frame for this case study made answering this comprehensive question impossible, we chose to study three aspects of the ecoroof that affect stormwater runoff: water retention, evaporation and delayed discharge. We also looked at how the blanket of soil acts as an insulator for the building.
Click colored area in the plan above!
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