Long Island Regional Envirothon, Ltd.
423 Griffing Avenue • Riverhead, New York 11901 • 631-727-2315 x3 • email

"Long Island's premier environmental studies competition for high school students in Nassau and Suffolk Counties."




14th Annual L.I. Envirothon
• Wednesday April 25, 2012 • Usdan Center for the Creative and Performing Arts

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2012 CURRENT ISSUE

Station Master
 
TBA

 

"Nonpoint Source Pollution/Low Impact Development"

• Introduction

• Learning Objectives

  • References

Introduction

“Going Green with LID technology to reduce NPS”

Nonpoint source pollution, unlike pollution from industrial and sewage treatment plants, can come from many different sources. Stormwater runoff carries pollutants into our streams, rivers, reservoirs and other bodies of water.

These pollutants include:

  • Excess fertilizers, herbicides, and insecticides from residential areas
  • Oil, grease, and toxic chemicals from urban runoff
  • Sediment from improperly managed construction sites, crop and forest lands, and eroding stream banks
  • Bacteria and nutrients from pet wastes and faulty septic systems

An estimated 60 percent of current water pollution is attributed to stormwater runoff. Nonpoint source pollution can contaminate drinking water, destroy wildlife habitat, close beaches, kill fish and cause many other serious environmental and public health problems. Every year, millions of dollars are spent to restore and protect areas damaged by nonpoint source pollutants. Stormwater has been identified as one of the leading sources of pollution for all waterbody types in the United States. Furthermore, the impacts of stormwater pollution are not static; they usually increase with more development and urbanization.

One of the most exciting new trends in managing stormwater runoff is the increased use of Low Impact Development (LID) to help protect and restore water quality. LID comprises a set of approaches and practices that are designed to reduce runoff of water and pollutants from the site at which they are generated. By means of infiltration, evapotranspiration, and reuse of rainwater, LID techniques manage water and water pollutants at the source and thereby prevent or reduce the impact of development on rivers, streams, lakes, coastal waters, and ground water.

LID is an approach to land development (or re-development) that works with nature to manage stormwater as close to its source as possible. LID employs principles such as preserving and recreating natural landscape features, minimizing effective imperviousness to create functional and appealing site drainage that treat stormwater as a resource rather than a waste product. There are many practices that have been used to adhere to these principles such as bioretention facilities, rain gardens, vegetated rooftops, rain barrels, and permeable pavements. By implementing LID principles and practices, water can be managed in a way that reduces the impact of built areas and promotes the natural movement of water within an ecosystem or watershed. Applied on a broad scale, LID can maintain or restore a watershed's hydrologic and ecological functions. LID has been characterized as a sustainable stormwater practice by the Water Environment Research Foundation and others.

Benefits of LID:

  • improved aesthetics
  • expanded recreational opportunities
  • increased property values due to the desirability of the lots and their proximity to open space
  • increased total number of units developed
  • increased marketing potential and faster sales
  • reduced runoff volumes and pollutant loadings to downstream waters
  • reduced incidences of combined sewer overflows
  • enhanced property values
  • improved habitat
  • aesthetic amenities
  • improved quality of life.

Although the increase in application of these practices is growing rapidly, data regarding both the effectiveness of these practices and their costs remain limited. In the vast majority of cases, the U.S. Environmental Protection Agency (EPA) has found that implementing well-chosen LID practices saves money for developers, property owners, and communities while protecting and restoring water quality.

As water becomes an ever-increasing issue nationwide, managing our stormwater properly is not only a green technology, it becomes a necessity. And through the use of Low Impact Development strategies, properly managing stormwater is something all of us can do.

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Learning Objectives

After completing study of this issue, students will be able to:

1.     Define Low Impact Development (LID).

2.     Define nonpoint source pollution.

3.     Explain the impacts of land use on watersheds.

4.     Understand the limitations and benefits of conventional stormwater management design versus LID.

5.     Identify and apply LID Best Management Practices (BMPs) and selection criteria.

6.     Explain how soils, wildlife, forestry, and aquatics affect and are affected by nonpoint source pollution (and its reduction) and LID.

7.     Identify how LID is used to manage stormwater.

8.     Explain the impacts urban sprawl has on nonpoint source pollution and how LID can be used to manage and reduce nonpoint source pollution.

9.     Analyze pros and cons of the application of LID Best Management Practices.

10.  Understand the relationship between LID hydrologic controls (i.e. retention ponds, swales, etc.) and water quality benefits.

11.  Provide examples of what individuals and communities can do to implement LID at home.

 

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References

1. DCCD Fact Sheet 1 (Dauphin County Conservation District – DCCD)

2. DCCD Fact Sheet 2

3. EPA Reducing Stormwater Costs (U. S. Environmental Protection Agency – EPA)

4. EPA How Does Green Infrastructure Benefit the Environment

5. EPA Roof Cover

6. LID Questions and Answers

7. LID A Literature Review (selected section)

8. LID For Big Box Retailers

9. NRDC Stormwater Strategies (selected chapters 2, 3, and 12)

10. SWMPC LID – News 1 (South West Michigan Planning Commission – SWMPC)

11. SWMPC LID – News 2

12. SWMPC LID – News 3

13. SWMPC LID – News 4

14. SWMPC LID – News 5




The past Current Issue topics and Station Masters have been...

2011

Salt and Fresh Water Estuaries

Suffolk County Department of Health Services - Office of Ecology - Peconic Estuary Program - Kim Barbour

2010

Protection of Groundwater Through Urban, Agricultural and Environmental Planning

Suffolk County Department of Health Services - Office of Ecology - Peconic Estuary Program - Kim Paulsen

2009

Biodiversity in a Changing World NY Sea Grant - Larissa Graham & Central Pine Barrens Joint Planning and Policy Commission - Melissa Griffiths

2008

Recreational Impacts on Natural Resources The Waterfront Center - Jeanne Beyer & James Europe

2007

Alternative/Renewable Energy Citizen's Campaign for the Environment - Mary Ellen Dour & Maureen Dolan-Murphy

2006

Water Stewardship in a Changing Climate Nassau County Soil & Water Conservation District - Sherry Forgash

2005

Managing Cultural Landscapes Suffolk County Soil & Water Conservation District - Sharon Frost

2004

Natural Resource Management in the Urban Environment  

2003

Farmland Preservation & Conservation Suffolk County Soil & Water Conservation District - George Proios

2002

Introduced Species  

2001

Urban Nonpoint Source Pollution Suffolk County Soil & Water Conservation District - Sharon Frost

2000

Wetland Management  

1999

Wildfire Management  


2009 L.I. Envirothon
Old Bethpage Village Restoration



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY



2008 L.I. Envirothon
Usdan Center of Creative and Performing Arts
Wheatley Heights, NY


 

Long Island Regional Envirothon, Ltd. • 423 Griffing Avenue • Riverhead, New York 11901 • 631-727-2315 x3 • email