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Environmental Storm Water Quality: |
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The Phase 1 implementation of the environmental
storm water management initiative dealt with 67 acres of catchment
area north of Road 6. To minimize runoff, meet water quality
objective and handle a 10-year storm event, designers rejected the
traditional gravity method of diverting water to storage areas and
adopt a system using porous pavement over gravel bringing water into
deep pipes that discharged the water relatively slowly into swales
and wetlands where it was cleansed naturally. The use of Archimedes
screws to lift storm water to a higher elevation and discharge it
through the porous has brought significant efficiency gains to the
system’s water handling.
According to Fred Payne of Arcadis-Giffels:
“The main objective was natural watershed emulation, with complete
retention and slow discharge of naturally-cleansed water to the
Rouge River. This approach is drastically different from the
traditional rapid storm water runoff removal and discharge, and
addresses the hydraulic loading of storm water to receiving streams
as critical water quality protection issue. This watershed will, as
closely as possible, emulate the hydraulic and water quality
behavior of the area’s natural watersheds”. |
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Green Roof:
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Green Roof installation |
Make-up of the Green Roof |
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Photo/Graphics by Ford Communications Network |
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The objective of the green roof was to reduce
storm water runoff from buildings, provide solar shading of the
building roof surfaces, and provide a natural habitat. The original
concept for the living roof was based on an initial design of a 4”
thick soil composition with grasses and sedum plantings. Atypical
to industrial development, the implementation of a green roof had
many unique issues to address, such as, additional dead loading of
building structure; survival and maintenance of plantings;
construction logistics; warranties for roofing and plantings, fire
resistance and code compliance. The project underwent a series of
changes that each were steps in progressively improving the design
of the green roof system. The end result is the largest green roof
in the world at less cost than anticipated. The currently installed
roofing system is only 25% of the original design weight, which
provides best practice utilization for future projects at a further
reduced cost. |
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Green Roof Inhabitants |
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Photos by Ford Communications Network |
According to Dennis O’Beirne of Arcadis Giffels
“The Dearborn Truck Plant Final Assembly Building’s green roof
contributes to the restoration and natural balance of the local
ecostructure and includes10 plus acres of vegetation with ten
different types of Sedum that reduces the site’s urban heat island
effect, improves storm water runoff, provides increased comfort
inside the plant during warmer weather, and saves energy. Water
runoff quality is also improved by the Sedum’s natural ability to
filter out toxins. In April, a member of the Ford Wildlife Habitat
team actually spotted a Canadian goose nest and eggs in the living
roof. Birds have returned to a new green home.”
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