Bioswale - Woodland Dr. Vancouver (Object-ID: 319)

(Bio)swale

Created at: 31 May 2023

Description

Bioretention, Bioswale, Built_Year: 2022, Drain_Area: 3007, Imper_100: 88%

Bioswale (BSW): A bioswale located on Woodland Drive between 1st and 2nd Ave has a footprint of 140 m2 managing runoff from a 2600 m2 of impervious area. Infiltration testing was done with a Guelph permeameter prior to install, and the saturated hydraulic conductivity was less than 1 mm/hr. The system was designed with an infiltration rate of 1mm/hr. From geotechnical investigations, the soil type was found to be silty sand with trace gravel at 1 m below ground surface (bgs). No water was observed in the test hole, however mottled gray soil indicated a possible shallow perched groundwater table during the winter months. 

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Ruben Matahelumual

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