Bearspaw Sediment Management Site
The City of Calgary, Water Services would like to share information on an upcoming storm pond maintenance project in Ward 1. The City will use the site located west of Bearspaw Water Treatment Plant (WTP), on the future expansion lands, as a temporary site to dry sediment dredged from storm water management facilities in Calgary. For this site, the proposed design includes the construction of three cells (areas) that will be used to dry soil that is brought to site.
The construction project will consist of stripping topsoil and grading to construct three cell. Each cell will be enclosed within a berm. The grading will be towards a water collection area where any collected water from the drying process or rain events will evaporate or be absorbed into the ground.
Once construction of the three cells is complete, sediment will be brought to the site to be dried (expected late fall 2016). Sediment will be dredged from various storm water ponds throughout Calgary and trucked to one of the cell locations. Once the sediment has been placed within the on-site berms, the sediment will be turned by equipment so that it will dry via evaporation or infiltration, helped by the warmer temperatures and winds in the spring and summer.
Finally, the sediment will be worked until it is dried enough to be classified as a soil, stockpiled, and then transported off the site. This process will be a continuous cycle for the duration of the site’s existence, no greater than 25 years.
Noise and dust impacts will be monitored to fall within bylaw limits
Work hours are Monday – Sunday, 7 a.m. – 7 p.m.
Construction of the area will take place from early September until the end of October 2016. Use of the site to dry soil will take place immediately following construction. For more information, visit calgary.ca or contact 311.
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