Overall Rating Silver
Overall Score 61.14
Liaison Jeff Spoelstra
Submission Date Feb. 28, 2019
Executive Letter Download

STARS v2.1

Western Michigan University
OP-23: Rainwater Management

Status Score Responsible Party
2.00 / 2.00 Mark Weiss
Director of Environmental Health and Safety
Environmental Health and Safety
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Which of the following best describes the institution’s approach to rainwater management?:
Comprehensive policies, plans or guidelines that require LID practices for all new projects

A brief description of the institution’s green infrastructure and LID practices:

No new outfalls or discharges to the Arcadia Creek will be installed. Existing outfall(s) and discharges will be maintained as necessary to operate at their existing capacities. New project sites will be designed to attain a “0%” volume discharge increase or impact on the existing storm water drainage system. At minimum, effluent limits and monitoring shall meet the State of Michigan “minimum treatment volume standard” and “channel protection criteria” as defined in The University’s Storm Water Discharge Permit. WMU Stds DG31-12 Rev: 9/23/2008 Storm Water Mgmt.doc Printed: 12/18/2008. Designs shall utilize retainage and detainage systems to minimize the impact of the existing storm water system. Designs shall include maintainable sediment control. All addition(s) & renovation(s) on campus shall require the use of computer modeling to determine and evaluate the design flow conditions of storm water systems and track changes to existing storm water system(s) downstream. Copies of these files are to be submitted to WMU Campus Facilities Department. These calculations shall include detention area sizing. All additions & renovations project(s) on campus are required to provide electronic detailed site grading plans and specifications identifying: on-site drainage patterns, on site detention areas, storm drainage structure(s), pipe(s) with size and material selection, invert elevation(s), and geometric location(s) to WMU Campus Facilities Department. Testing shall be specified and performed on all new project storm/sanitary drain systems to insure no cross connects are installed in the systems. Streets and parking areas shall utilize runoff areas as much as can be accommodated to encourage infiltration.


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:

Upon completion of the installation of a best management practice (BMP) as outlined by the State of Michigan department of Environmental Quality (MDEQ), a detailed maintenance plan is developed and strictly adhered to as part of ongoing grant eligibility. These maintenance procedures are outlined in our Campus Stormwater Control Measures Maintenance Plans. These plans are site specific and cover various green infrastructure including, detention ponds, rain gardens, porous pavements, and pre-treatment ponds.


The website URL where information about the programs or initiatives is available:
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Additional documentation to support the submission:
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