Term
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Definition
| Brownfield Redevelopment-1/2 point |
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Term
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Definition
| Stormwater Management: Rate and Quantity 1/2 point |
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Term
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Definition
| Stormwater Management: Treatment 1/2 point |
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Term
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Definition
| Heat Island Effect, Non-Roof up to 1 point |
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Term
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Definition
| Heat Island Effect, Roof 1/2 point |
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Term
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Definition
| Light Pollution Reductions 1/2 point |
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Term
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Definition
| Water Efficient Irrigation, Reduced Potable Water Consumption -1/2 point |
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Term
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Definition
| Water Efficient Irrigation: No Potable Use or No Irrigation 1/2 point |
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Term
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Definition
| Innovative Wastewater Technologies 1/2 point |
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Term
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Definition
| Water Use Reduction, 20% Reduction 1/2 point |
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Term
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Definition
| On-Site Reneweable Energy-up to 1 point |
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Term
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Definition
| Other Quantifiable Environmental Performance-up to 3 points |
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Term
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Definition
| process of cleaning up a contaminated site by physical, chemical or biological means. |
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Term
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Definition
| evaluation of above-ground and subsurface characteristics, including the geology and hydrology of the site to determine if a release has occurred, as well as the extent and consideration of the release. |
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Term
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Definition
| Rehabilitate damaged sites where development is complicated by real or perceived environmental contamination, reducing pressure on undeveloped land. |
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Term
| Stormwater Management: Rate and Quantity(Option B) |
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Definition
| limit disruption and pollution of natural water flows by managing stormwater runoff. |
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Term
Equation
Impervious Area(sq ft) |
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Definition
=
surface area(sq ft) x
runoff coefficient |
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Term
Equation
Imperviousness(%) |
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Definition
= Total Impervious Area(sq ft) /
Total Site Area(sq ft) |
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Term
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Definition
| an engineered system designed to simulate natural wetland functions for water purification. Removal of contaminants from wastewaters |
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Term
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Definition
| promote runoff of precipitation volumes instead of infiltration into the subsurface. |
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Term
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Definition
| consists of water volumes that are created during precipitation events and flow over surfaces into sewer systems or receiving waters |
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Term
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Definition
| consists of organically bound phosphates, poly-phosphates and orthophosphates in stormwater, the majority of which originates from fertilizer application. |
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Term
| Total Suspended Solids(TSS) |
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Definition
| particles or flocs that are too small or light to be removed from the stormwater via gravity settling. |
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Term
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Definition
| What is typically removed via filtration? |
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Term
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Definition
| Chemical precipitation is the typical removal mechanism for this substance |
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Term
| Infiltration Basins and Trenches |
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Definition
| devices used to encourage subsurface infiltration of runoff volumes through temporary surface storage. |
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Term
| Porous Pavement and Permeable Surfaces |
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Definition
| used to create permeable surfaces that allow runoff to infiltrate into the subsurface. |
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Term
| Vegetated Filter Strips and Grassed Swales |
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Definition
| utilizes vegetation to filter sediment and pollutants from stormwater. |
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Term
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Definition
| remove sediment and pollutants from stormwater runoff using a filter media such as sand or gravel |
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Term
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Definition
| capture stormwater runoff and allow pollutants to drop out before release to a stormwater or water body. |
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Term
| Stormwater Management, Treatment Option C |
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Definition
| limit disruption of natural water flows by eliminating stormwater runoff, increasing on-site infiltration and eliminating contaminants. |
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Term
| Heat Island Reduction, Non-Roof, Option D-up to 1 point |
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Definition
| Reduce heat islands(thermal gradient differences between developed and undeveloped areas) to minimize impact on microclimate and human and wildlife habitat. |
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Term
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Definition
| occur when warmer temps are experienced in urban landscapes compared to adjacent rural areas as a result of solar energy retention on constructed surfaces. |
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Term
| Principal Surfaces that contribute to heat island effect |
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Definition
| streets, sidewalks, parking lots and buildings |
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Term
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Definition
| defined for LEED purposes as pavement that is less than 50% impervious and contains vegetation in the open cells |
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Term
| Solar Reflectance Index(SRI) |
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Definition
| a yardstick that compares different materials based on their reflectance and emissivity characteristics. |
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Term
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Definition
| ratio of the radiation emitted by a surface to the radiation emitted by a blackbody at the same temp |
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Term
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Definition
| parameter between 0-1 that indicates the ability of a material to shed infrared radiation. |
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Term
| Non Roof Impervious Surfaces |
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Definition
| all surfaces on the site with a perviousness of less than 50%, not including the roof of the building |
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Term
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Definition
| the percent of the surface area of a paving material that is open and allows moisture to pass through the material and soak into the earth below the paving system |
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Term
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Definition
| ratio of the reflectance electomagnetic energy to the incoming electromagnetic energy. |
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Term
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Definition
| all energy striking a reflecting surface is reflected back into the atmosphere and none of the energy is absorbed by the surface |
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Term
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Definition
| "tuck-under" or stacked parking structure that reduces the exposed parking surface area |
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Term
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Definition
| "tuck-under" or stacked parking structure that reduces the exposed parking surface area |
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Term
Which material has a higher SRI?
A) Asphalt Paving
B) Ordinary Grey or buff Portland Cement
C)White Portland Cement Concrete |
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Definition
Answer: C: White Portland Cement Concrete(85)
Asphalt is the lowest SRI at (8.7) |
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Term
| Heat Island Reduction, Roof-Option E |
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Definition
| Reduce heat islands(thermal gradient differences b/w developed and undeveloped areas) to minimize impact on microclimate and human and wildlife habitat |
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Term
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Definition
| ratio of the radiant heat flux emitted by a sample to that emitted by a blackbody radiator at the same temp |
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Term
| Weathered Radiative Properties |
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Definition
| refer to the solar reflectance and therma emittance of a roofing product after three years of exposure to the weather. |
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Term
| Light Pollution Reduction Option F |
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Definition
| eliminate light trespass from the building and site, improve night sky access and reduce development impact on nocturnal environments |
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Term
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Definition
| locally determined times when greater lighting restrictions are imposed |
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Term
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Definition
| angle b/w the vertical axis of a luminaire and the first line of sight at which the light source is no longer visible |
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Term
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Definition
| the amount of light falling on a surface, measured in units of footcandles(fc) or lux(lx) |
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Term
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Definition
| measure of light falling on a given surface. |
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Term
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Definition
| luminaire has zero candela intensity at an angle of 90 degrees above the vertical axis and at all angles greater than 90 degrees from straight down. |
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Term
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Definition
| the sensation produced by luminance within the visual field that is significantly greater than the luminance to which the eyes are adapted, causing annoyance, discomfort or loss of visual performance |
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Term
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Definition
| typically made up of three different types of errant light:Glare, Light Trespass, Sky Glow |
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Term
| What are the three types of light pollution? |
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Definition
1) Glare
2) Light Trespass
3) Sky Glow |
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Term
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Definition
| "the light shining in my window" obtrusive light that is unwanted because of quantitative, directional or spectral attributes. |
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Term
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Definition
| commonly called brightnessor light coming from a surface or light source. Composed of the intensity of light striking an object or surface and the amount of that light reflected back toward the eye. |
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Term
| What is measured in candela per square meter(cd/m2) or footlamberts(fl)? |
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Definition
|
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Term
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Definition
| non-technical term that describes devices or techniques that are used as part of a luminaire or lamp to limit glare, light trespass or sky glow |
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Term
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Definition
| caused by stray light from unshielded light sources and light reflecting off surfaces that enters the atmosphere where it illuminates and reflects off dust, debris and water vapor. |
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