|Submission Date||Aug. 30, 2019|
Evergreen State College, The
OP-23: Rainwater Management
|2.00 / 2.00||
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 Evergreen State College is located on the Cooper Point Peninsula, with extensive waterfront on Eld Inlet. The college minimizes its impact on the inlet by maintaining a largely undeveloped, heavily forested campus. The undeveloped portion has been set aside as reserves—Ecoforest/Ecoagriculture area, Old Forest Area, Geoduck Beach and Grass Lake wetland area—which are key to the health of the campus watershed.
The campus core is the location of the highest number of impervious surfaces on The Evergreen State College property. Green strips, small gardens, green roofs on the Seminar II buildings, pervious paving, bioswales and native trees mitigate the effects of impervious surfaces.
Similarly, storm water detention tanks at Seminar II and the College Activities Building mitigate the high runoff from significant storms.
Other impervious surfaces include campus parking lots. Joint oil-water separators release storm water into a Red Alder grove before entering Eld Inlet. Another oil-water separator releases into a drainage ditch that runs into Snyder Creek.
Snyder Creek receives a large volume of campus storm water runoff, as does the Red Alder grove, but illicit discharge to that system is reduced through the use of pervious pavement, oil-water separators, bio-swales and dense vegetation. These measures serve to filter many of the potential pollutants out before they reach the Eld Inlet, and in this way Evergreen works constantly to preserve water quality in the Puget Sound.
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 storm water management plan specifically addresses runoff from the developed areas of campus (roughly 30%) within the context of the undeveloped 70% of campus that is protected from development within the campus master plan.
The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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