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Green infrastructure at a large scale describes an urban
network with natural areas including river corridors,
forests, wetlands and floodplains. These ecological
features provide valuable habitat and use natural
processes to purify the air and water. We can also use
similar processes at a smaller scale to slow, capture
and filter the stormwater runoff generated by urban
areas where natural landscapes are lacking. Green
infrastructure practices used in urban areas not only
reduce water pollution, but also reduce the burden on
the existing sewer infrastructure. The City of Columbus
is currently working to identify areas best suited for
green stormwater practices, and is looking at potential
benefits and incentives that encourage stormwater
management on site.
The US EPA has conducted case studies of communities
across the nation to identify functioning green
infrastructure incentive programs. The startup costs for
some projects, such as green roofs or street retrofits,
can often be prohibitive in areas like downtown
Columbus, because property is more expensive than
surrounding areas and developers are hesitant to
increase their initial costs for longer term benefits.
However, there are a variety of incentive programs
effectively used in other cities to encourage and expand
green infrastructure projects:
- Stormwater fee discounts
and credits can be used to encourage reductions in
impervious surface area or increase particular green
practices like rain gardens or green roofs.
Minneapolis, Louisville, Philadelphia and Kansas City
are a few of the cities with a stormwater fee discount
program.
- Development incentives can
be used to meet stormwater management goals and
include tax credits, expedited permitting, and density
bonuses. Chicago’s Green Permitting Program encourages
sustainable design principles and offers developers
the chance to save time and money with an expedited
permitting process. In Seattle, a density bonus allows
downtown, commercial and residential developments more
height and floor area if they use LEED or an
equivalent green building standard. The standard could
set a floor for development of green stormwater
practices.
- Grants, loans, rebates and
installation financing provide options to finance
green infrastructure projects. Chicago’s Green Roof
Improvement Fund provides up to 50% of the cost for
green roof installation for eligible commercial
facilities. There are several federal and state loan
programs available, the most notable being the EPA
Clean Water State Revolving Loan Fund. The GreenScapes
Rewards program in Montgomery County, MD offers
limited rebates to assist with the installation of
rain gardens, cisterns, green roofs, native plants,
trees and permeable pavement.
- Awards and recognition
programs may not involve much in the way of financial
assistance, but they can be effective in generating
positive PR for businesses using sustainable
practices, and are valuable in educating the community
about those practices. The City of Columbus has a
Green Spot program to recognize individuals and
businesses that commit to a minimum number of
environmentally responsible practices. Other cities
with awards programs include Chicago and Philadelphia.
Incentives provide the extra push needed to establish
greener development practices, eventually making green
part of the way we do business. The city of Columbus is
currently looking at green incentives. We encourage them
to offer a variety of alternatives in a timely manner.
For more information,
visit the US EPA’s website where they have posted a
series of municipal handbooks.
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Green infrastructure practices used in urban areas not
only reduce water pollution, but also reduce the
burden on the existing sewer infrastructure.
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