county of albemarle greenroof

County of Albemarle Greenroof


County of AlbemarleGreenroof

Mark Warner, Governor; Tim Kaine, Lt Governor



Frequently asked questions.

Load Issues and Engineering

Leaks!!!!????

How Much?

Are you for real?

http://www.hrt.msu.edu/greenroof/WebSite%20Images/21%20%20080303%20DoghouseGreenRoof.jpg



Above April 5, 2005 satellite photo of

Chesapeake Bay watershed courtesy NASA,

MODIS Rapid Response at GSFC



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How do we make roofs green?



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County of Albemarle

Greenroof Plan

County of Albemarle Greenroof County of Albemarle Green Roof Process


County of Albemarle

Greenroof Plan

Greenroof Plan

9,000 sq. ft.

County of Albemarle Greenroof County of Albemarle Green Roof Process



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What do green roofs do?

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your “Moment of Zen”




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WORKHORSE?



Greening Roofs

Why should we?

What Greenroofs Improve

Where Greenroofs can be used

How they are constructed

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What are the costs?

What is saved?

Who can implement a greenroof?

The State of Green in the Old Dominion





Greenroof Education

Identify and Quantify Possibilities

Understand Costs

Advocate

Find Funding




Greenroof Education


Understand Costs

Advocate

Find Funding

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Greenroof Education


Understand Costs

Advocate

Find Funding

The Energy Policy Act of 2005

• $3.7 billion for activities dedicated to energy efficiency and conservation, including establishment of a building performance initiative, authorization of $150 million in competitive grants for energy efficiency initiatives, including green roofs, and more.




Greenroof Education


Understand Costs

Advocate

Find Funding

The County’s funding came from the EPA through the Virginia Department of Conservation and Recreation. The Commonwealth received $400,000 in 2004.



Think outside the box (and above the rafters) in your local community.


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What greenroofs improve.

The Chesapeake Bay



The Chesapeake Bay

Sediment can smother benthic (bottom-dwelling) plants and animals, such as oysters and clams. Suspended sediment clouds the water, preventing light from penetrating to the leaves and stems of underwater grasses, or submerged aquatic vegetation (SAV).

High concentrations of toxic materials also may be present in sediment, which further contaminate waterways. Sediment carries excess nutrients, particularly phosphorus, into Bay waters, compromising water quality. Accumulations of sediment can clog waterways and ports, making traffic difficult or hazardous, and requiring dredging.

http://www.chesapeakebay.net/american_oyster.htm

http://www.chesapeakebay.net/baygras.htm

http://www.chesapeakebay.net/nutr1.htm



Air Quality



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Energy Demand


Why should we construct greenroofs?

Just as trees and other plantlife clean air by making use of airborne carbon, greenroofs do the same thing…recycling harsh roof microclimates into living, breathing places.


Energy Consumption and Dependence

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Energy Waste



Our Energy comes with Costs.

Why should we construct greenroofs?





We create real and long-term

When we increase efficiency….





ADAPTABILITY, VALUE, ECOLOGY and STABILITY

Greenroofs allow buildings to require and demand less engergy. They make buildings less of an “energy hog”




COUNTY DATA COLLECTIONOnce the roof is established, the portion with the green roof system will be monitored and measured during an extended period and compared to a similar, non-greened portion of the roof. Mike Stumbaugh, Director of General Services will use digital thermometers attached to micro computers (called HOBOs) to measure and record the changes in temperature from inside and out. Coefficients of energy transfer will be used to determine what the roof is doing.

Energy hog?


COUNTY DATA COLLECTIONThis will allow us to understand exactly how much energy is conserved.County employees are certain to hear a little less rumbling of air handlers and chillers.County residents should not expect their taxes to plummet as a result of our increased efficiency, but over the life of the roof, it will conserve energy that continues to be more costly.

Similar studies will look at water quantity and

quality after the roof is complete.



Flashiness in streams and waterways.



Every Piece of green infrastructure

Creates a measured improvement.



Urban Heat Island Effect





HEALTH ISSUES

Urban Heat Island Effect






HEALTH ISSUES

Air Quality







HEALTH ISSUES

Heat and Microclimate









HEALTH ISSUES

Food





HEALTH ISSUES

Food

Well being

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Habitat

County of Albemarle Greenroof Habitat



Water Quality

Plants and soil medium filter airborne pollutants. The Department of Energy is providing grant funding for greenroofs. Greenroofs filter phosphorous and nitrogen, among others from rainwater.…and decrease the energy (and therefor, pollution) required to keep us comfortable. Pennsylvania State University Center for Greenroof

Researchwww.://hortweb.cas.psu.edu/research/greenroofcenter/research.html



Water Quality

Phospherous and nitrogen are bi-products of current regulations on coal and other fossil fuel powered energy plants. In urban areas, these airborne nutrients do not have an opportunity to be cleaned through the natural cycle as they would in more natural areas.

Charlottesville



Water Quality

Plants and soil medium work to neutralize acid rain.

Pennsylvania State University Center for Greenroof Researchwww.://hortweb.cas.psu.edu/research/greenroofcenter/research.html



Water Quality

Greenroofs have the ability to remove and fitler phospherous, nitrogen, and potentially mercury. These are all bi-products of the department of energy’s current regulations on coal and other fossil fuel powered energy plants.



Water QuantityOn average, across the United States, green roofs are shown to retain 50-70% of water from rainfall events. Peak runoff flows are reduced up to 85%. These peak runoff flows are responsible for the most severe erosion along our rivers and streams. After full saturarion, a greenroof will release rain in excess of one inch, on average. Shenck’s Branch


County of Albemarle Greenroof Shenck’s Branch



Shenck’s Branch



County Office Building Roof Projected Performance



Where can greenroofs be used?

airport

restaurant

http://www.hrt.msu.edu/greenroof/WebSite%20Images/17%20%20071001%20SchipholAmsterdamAirport.jpg




Pennsylvania State University Center for Greenroof Researchwww.://hortweb.cas.psu.edu/research/greenroofcenter/research.html

airport

restaurant

Legistlative Building,

Raleigh, NC

http://www.hrt.msu.edu/greenroof/WebSite%20Images/17%20%20071001%20SchipholAmsterdamAirport.jpg



New Target Store, Chicago, IL


Residential Application


Residential Applicationdemo


Residential Applicationroofboards


Residential Applicationwaterproofing


Residential ApplicationDrainage Layer


Residential ApplicationSoil Medium


Residential ApplicationPlanting


Residential ApplicationFull Establishment After Two Years +/-



Who can implement a greenroof?


Local Government



Costs

Costs for greenroof systems begin under $10

per square foot...

An extensive greenroff, such as the one growing on the County

Office Building is the least expensive. Extensive greenroofs are

not meant to be an active space. They are limited access and are

to serve no greater function than those previously mentioned.

An Intensive greenroof anticipates uses for relaxation and

reflection and involve larger plants, deeper soil medium, and

frequent use.

Generally Extensive roofs range between $5-$15 per square foot

for system alone. As with any product that has more to offer,

intensive green roofs cost out higher, but are still cost-effective.


State of Green in the Old Dominion

Arlington County has a two-year old green roof located near Courthouse Metro.

The City of Alexandria is preparing to install the largest greenroof in the Commonwealth:10,756 square feet.



Other smaller projects have been completed or are in the works at:

- James Madison University

- Fairfax County

- Arlington County

- Alliance for the Bay, Richmond Area

- Downtown Greens Community Garden in Fredericksburg

http://www.hrt.msu.edu/greenroof/WebSite%20Images/18%20%20071201%20KasselHubner4.jpg



THOUGHTS

and

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QUESTIONS?

http://www.amazon.com/exec/obidos/ASIN/0764321897/greenroofscom-20

county of albemarle greenroof

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