Environmental Engineering Reference
In-Depth Information
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Potential brownfields in the city of Flint
Genesee Twp
Mt. Morris Twp
Flint
Flint Twp
Burton
Legend
Flint Twp
Potential brownfield
Freeway
Municipality
Mundy Twp
Sources:
Michigan Center for Geographic Information
Grand Blanc Twp
FIGURE 16.5
Brownfields may cover a significant portion of the urban area (Flint, Michigan). (Courtesy of Center for Applied
Environmental Research, University of Michigan-Flint, Flint, MI, 2010.)
significant portion of the landscape, with over 7000 potential brownfields occupying 19%
of the total land area (Figure 16.5).
Through the use of a geographic information system (GIS), the spatial correspondence
between brownfields and geological layers of information can be derived (Chapter 5). For
example, an overlay of contaminated brownfield locations on recharge zones for regional
aquifers would indicate locations where aquifer vulnerability was higher. Taking this logic
to the next level, the map producing this overlay could be combined with another layer of
surface streams to show areas where streams might receive contaminated groundwater.
This small sample out of a potentially larger set of bad outcomes associated with con-
taminated brownfields reinforces the need to address them as part of a first step toward
sustainable watersheds.
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