| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 60.97 |
| Liaison | Natalie Hayes |
| Submission Date | Aug. 6, 2020 |
Bentley University
OP-22: Rainwater Management
| Status | Score | Responsible Party |
|---|---|---|
|
0.50 / 2.00 |
Natalie
Hayes Associate Director of Sustainability Office of Sustainability |
Which of the following best describes the institution’s approach to rainwater management?:
A brief description of the institution’s green infrastructure and LID practices:
The Bentley University campus is fortunate to contain an open channel stormwater collection system that captures and conveys stormwater runoff through campus. The campus is split into two general areas, the north side of campus where a majority of the academic buildings and several dorms exist and the south side of campus where a majority of the athletic fields exist with more dormitories.
The north campus sits largely on a hill with shallow overburden before encountering bedrock, there are exposed rock faces and bedrock outcroppings. At the south campus the topography flattens out to a more level plateau where athletic fields and fitness areas exist and there is a shallow depth to groundwater. The open channel stormwater system sets the tone for stormwater management on campus as an existing open water system that begins off campus to the north and discharges off campus to the south, the stormwater channel system contains its own homeostatic sustainable ecosystem that has adapted to the urban environment that exists in Waltham and through campus..
The University addresses the three main components of stormwater runoff mitigation, Peak Rate control, Water Quality improvement and Total Volume control. The type of stormwater mitigation implemented on campus is dependent on the location on campus. At the north campus the shallow depth to bedrock makes it difficult to infiltrate stormwater runoff and challenging to install infrastructure systems that are deep so the standard approach to Stormwater mitigation is through surface swales and shallow treatment pools that all eventually connect via pipe or swale, to the main drainage channel on campus. Whereas at the south campus the depth to bedrock is deeper and the groundwater is shallower which allows for the construction of open water extended retention basins.
A copy of the institution’s rainwater management policy, plan, and/or guidelines:
A brief description of the institution’s rainwater management policy, plan, and/or guidelines that supports the responses above:
The current strategy, in addition to complying with standard engineering practice and the City of Waltham design requirements; is to implement the appropriate LID techniques depending on the location on campus. For the North Campus, this generally includes open channel stormwater conveyance to the main stormwater channel and for the South Campus it includes open air extended retention basins that have controlled discharges to the channel.
Website URL where information about the institution’s green infrastructure and LID practices is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
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