Low Impact Development Manual for Michigan - OSEH - University ...

Case Study: City of Battle Creek City
Hall Runoff Project
City of Battle Creek, MI
The City of Battle Creek City Hall Runoff Project was designed to treat
stormwater runoff from a municipal complex adjacent to the Battle Creek
River, a tributary of the Kalamazoo River. The goal of the project was to treat
one-half inch of rainstorm runoff by incorporating several best management
techniques (BMPs) that promote infiltration and low impact development.
The BMPs included a vegetated roof system on the Police Department roof;
infiltration of runoff water from the impervious walkway in front of the
Police Department building; and infiltration from the parking lots behind
and adjacent to City Hall and the Police Department buildings.
Green roof on City of Battle Creek Police Department building
Source: City of Battle Creek
The green roof is primarily an extensive system with the exception of a
band around the perimeter of the roof which is intensive. The load reductions
on the roof have been revised to accommodate the additional system.
The City of Battle Creek is responsible for the light maintenance needed
for the vegetated roof. Keeping the native plants, mainly sedum, properly
watered during establishment did pose a challenge. Replanting was required
in some areas.
Case Study Site Considerations
Project Type Extensive Green Roof
Estimated Total
Project Cost
Maintenance
Responsibility
$520,252 for roof reconstruction plus green roof; green roof
materials alone were $121,635
City of Battle Creek
Project Contact Christine Kosmowski, 269-966-0712
Estimated Annual
Pollutant Load
Reductions:
• Sediment – 3.8 tons
• Nitrogen – 101 lbs.
• Phosphorous – 16 lbs.
• Volume – 68 percent
Another goal of the City of
Battle Creek City Hall Runoff
Project was to increase community
awareness of low impact
development techniques and their
water quality protection benefits.
The City is promoting the area
as a demonstration site for local
builders and homeowners.
LID Manual for Michigan – Chapter 7 Page 302