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title. Green Infrastructure

date. 2014

city. Northeast Ohio/NY/Philly

Cascadilla.jpg

Upstate NY, Watkins Glen

Green Infrastructure Changes Sewer Overflow Problem

 

Keitha B Cole SPCH 101H Spring 2014

General Purpose: to persuade the audience to get on board with Green Infrastructure.

Specific Purpose Statement: Green Infrastructure is an important replacement for some costly gray infrastructure projects in the managing of sewer overflows, not just in cost, but also in ecological health.

Introduction:

  1. I’ll define “combined sewer overflows” (CSOs), and how they are a problem.

  2. I’ll tell you the difference between gray and green infrastructure, and the many ways to implement green infrastructure

  3. I’ll tell you what this stuff can cost you.

Transition Statement: You’ll see that Green Infrastructure is a great way to reduce water pollution.

Body:

  1. What is a Combined Sewer Overflow or “CSO”?

  1. It is a sewer that combines our sewage with storm water, before it goes to the waste-water treatment plants.

  2. In order to prevent wastewater from “backing up into your basement,” as Andrew Tobias from the Plain Dealer put it, there’s a sewer tunnel that lets the lighter debris from the wastewater travel with storm water out to natural bodies of water.¹

  3. According to the Natural Resource Defense Council, CSOs in the U.S. are dumping up to 850 billion gallons of untreated wastewater into streams, rivers, lakes and oceans.²â€‹â€‹

CSO_Diagram1.jpg

What are people doing about it?

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  1. Gray infrastructure….

    1. This tunnel represents most cities’ sewers

    2. Many are antiquated and small.

    3. Gray Infrastructure plans resolve to build much larger storage tunnels, that would hold more rainwater, thus diverting it from pushing sewage into our waterways.

    4. The alternative Gray Infrastructure is building separate sewer systems, which would take street polluted rain water directly to waterways.

  1. GREEN INFRASTRUCTURE: Transforming impervious surfaces to pervious and/or delaying storm-water runoff. Impervious surfaces are like streets, they’re solid and water just runs over it, collecting whatever’s on them, and down the sewer.

    1. List brought to you by New York’s Department of Environmental Conservation http://www.dec.ny.gov/lands/58930.html#Project 

    2. Rain Gardens

      1. Cornell University Extension in Columbia County, NY

      2. Not only is the earth porous enough to soak up water, plants soak up a considerable amount from the dirt, and it looks good.​​​

Green Infrastructure:

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Rain Garden in Columbia County, NY

bioretention area Dutchess County Commun
  1. Bio-retention areas

    1. Dutchess Community College in Poughkeepsie

    2. This one is basically a pretty ditch that doubles as a pond in rainy seasons.

    3. The idea is to catch rainwater that would otherwise flow from large institutions down the drain.

Green Roofs

green roof The Culinary Institute of Ame
green roof Chapel of Our Lady Restoratio

Culinary Institute of America in Hyde Park put a straight up lawn on their roof.

Chapel of Our Lady Restoration Annex in Cold Spring, NY

Not only is it pretty, but Green Infrastructure is saving many cities a lot of money on water treatment costs!

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POROUS PAVEMENT: This is an example of porous pavement. This is concrete, but porous pavement can be made out of anything including recycled tires.

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  1. Vegetative Swales
    1. Here’s a parking lot that’s been dug up in the middle for some Earthy goodness.
      1. They also put these between streams and places of pollution, calling them Stream Buffers

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Rain Barrels:

These can be set under your gutters and used to water your lawns.

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