Title:
Implementing an integrated technologies approach to low impact development designs
Implementing an integrated technologies approach to low impact development designs
Authors
Miller, Mark Brian
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Abstract
Selecting the proper stormwater treatment
technology presents a number of challenges to site designers,
regulatory agencies and other stakeholders alike.
It is paramount for stormwater Best Management Practice
(BMP) technologies to be specified in accordance
with the intended land use as well as conditions for
which those technologies are designed to operate. Furthermore,
the ever increasing demand to implement green
infrastructure designs that rely on Low Impact Development
(LID) practices presents a wide variety of challenges
to the stormwater community. An LID technology
selection pyramid illustrates a process to identify proper
stormwater technologies including both land based and
manufactured devices. An integrated technologies approach
to LID practices offers the opportunity to uniquely
utilize a number of treatment train options to enhance
BMP performance and sustainability. The LID technology
selection process also often fails to adequately address
site characteristics in context with the performance capabilities
of the treatment approach. For example, the performance
of hydrodynamic separators decreases as particle
size decreases. If fine silt is the dominant particulate
in the stormwater runoff, then filtration would be more
effective in that case. Improper use of a treatment technology
can lead to poor performance and inaccurate conclusions
regarding the performance capabilities of the
device and technology as a whole. Several factors to consider
for selecting treatment technologies include future
land use, type and pollutant concentrations, particle size,
design storm, footprint, installation cost, maintenance
costs, practicality, and long term functionality.
Sponsor
Sponsored by: Georgia Environmental Protection Division; U.S. Department of Agriculture, Natural Resources Conservation Service; Georgia Institute of Technology, Georgia Water Resources Institute; The University of Georgia, Water Resources Faculty.
Date Issued
2013-04
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