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;Biofilter  
 
;Biofilter  
 
;biofilter
 
;biofilter
:Biofilters  
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;Biofilters  
 
;biofilters
 
;biofilters
 
:A bioretention BMP featuring an impermeable liner and underdrain that prevents infiltration of runoff into the underlying native soil; provides sedimentation and filtration of urban runoff as it passes through the mulch layer, engineered filter media and vegetation root zone.
 
:A bioretention BMP featuring an impermeable liner and underdrain that prevents infiltration of runoff into the underlying native soil; provides sedimentation and filtration of urban runoff as it passes through the mulch layer, engineered filter media and vegetation root zone.
Line 73: Line 73:     
;BMP
 
;BMP
;BMPs  
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:Best management practice. State of the art methods or techniques used to manage the quantity and improve the quality of wet weather flow. BMPs include: source, conveyance and end-of-pipe controls. 
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;Best Management Practices  
 
;Best Management Practices  
 
;best management practices
 
;best management practices
State of the art methods or techniques used to manage the quantity and improve the quality of wet weather flow. BMPs include Source, Conveyance and End-Of-Pipe Controls.  
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:State of the art methods or techniques used to manage the quantity and improve the quality of wet weather flow. BMPs include Source, Conveyance and End-Of-Pipe Controls.  
    
;Catchbasin  
 
;Catchbasin  
 
;catchbasin
 
;catchbasin
Box like underground concrete structure with openings in curb and gutter designed to collect runoff from streets and pavement.  
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:Box like underground concrete structure with openings in curb and gutter designed to collect runoff from streets and pavement.  
    
;Catchment  
 
;Catchment  
Line 115: Line 116:  
;cultivar
 
;cultivar
 
:A cultivated variety of a plant created by horticultural practice, often closed in large numbers from a similar individual. Cultivar names typically appear after the scientific name of a species, e.g. Prunus virginiana ‘Shubert’.
 
:A cultivated variety of a plant created by horticultural practice, often closed in large numbers from a similar individual. Cultivar names typically appear after the scientific name of a species, e.g. Prunus virginiana ‘Shubert’.
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;CVC
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:Credit Valley Conservation
    
;Depression Storage  
 
;Depression Storage  
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;GI
 
;GI
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:Green infrastructure
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;Green infrastructure
 
;Green infrastructure
 
;green infrastructure
 
;green infrastructure
Line 264: Line 270:     
;I/P ratio
 
;I/P ratio
:The ratio of the catchment (impervious area) to the footprint area of the receiving BMP (pervious area).  
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:The ratio of the impervious catchment (drainage) area to the pervious (footprint) area of the receiving BMP.  
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;LSRCA
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:Lake Simcoe Region Conservation Authority
    
;Landform
 
;Landform
Line 281: Line 290:  
;lot level
 
;lot level
 
:The treatment of urban runoff as close to the source area as possible through application of small scale stormwater management practices on individual properties that are linked to downstream conveyance and end-of-pipe practices.
 
:The treatment of urban runoff as close to the source area as possible through application of small scale stormwater management practices on individual properties that are linked to downstream conveyance and end-of-pipe practices.
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;LID
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:Low Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.
    
;Low impact development
 
;Low impact development
 
;low impact development
 
;low impact development
 
;Low Impact Development
 
;Low Impact Development
;LID
   
:A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.
 
:A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.
   Line 345: Line 356:  
;rainwater harvesting
 
;rainwater harvesting
 
:The practice of intercepting, conveying and storing rainwater for future use. Captured rainwater is typically used for outdoor non-potable water uses such as irrigation, or in the building to flush toilets.
 
:The practice of intercepting, conveying and storing rainwater for future use. Captured rainwater is typically used for outdoor non-potable water uses such as irrigation, or in the building to flush toilets.
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;RWH
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:Rainwater harvesting.
    
;Recharge
 
;Recharge
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;Stone reservoir
 
;Stone reservoir
 
;stone reservoir
 
;stone reservoir
:An underlying aggregate material bed that temporarily stores stormwater before infiltrating into the native soil or being conveyed by an underdrain pipe.
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;Storage reservoir
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;storage reservoir
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:An underlying bed filled with aggregate or other void-forming fill material that temporarily stores stormwater before infiltrating into the native soil or being conveyed by an underdrain pipe.
    
;Stormwater planter
 
;Stormwater planter
Line 391: Line 407:  
;TP
 
;TP
 
:Total phosphorus
 
:Total phosphorus
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;TRCA
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:Toronto and Region Conservation Authority
    
;TSS
 
;TSS
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:An area of land that drains into a river or a lake. The boundary of a watershed is based on the elevation (natural contours) of a landscape.
 
:An area of land that drains into a river or a lake. The boundary of a watershed is based on the elevation (natural contours) of a landscape.
 
   
 
   
o
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;Clay
Clay (SOILS)
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;clay
1. A mineral soil separate consisting of particles less than 0.002 millimeter in equivalent diameter. 2. A soil texture class. 3. (Engineering) A fine-grained soil (more than 50 percent passing the No. 200 Sieve) that has a high plasticity index in relation to the liquid limit. (Unified Soil Classification System).  
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:1. A mineral soil separate consisting of particles less than 0.002 millimeter in equivalent diameter. 2. A soil texture class. 3. (Engineering) A fine-grained soil (more than 50 percent passing the No. 200 Sieve) that has a high plasticity index in relation to the liquid limit. (Unified Soil Classification System).  
    
;Collector road  
 
;Collector road  
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;Combined Sewer  
 
;Combined Sewer  
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;combined sewer
 
:A wastewater collection system, which conveys sanitary wastewater (domestic, commercial and industrial wastewaters) and Stormwater runoff through a single-pipe system to a treatment works.  
 
:A wastewater collection system, which conveys sanitary wastewater (domestic, commercial and industrial wastewaters) and Stormwater runoff through a single-pipe system to a treatment works.  
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;Combined sewer overflow  
 
;Combined sewer overflow  
 
;combined sewer overflow
 
;combined sewer overflow
:A discharge to the environment from a Combined Sewer system that occurs because of a precipitation event when the capacity of the interceptor sewer or treatment plant is exceeded. It consists of a mixture of sanitary wastewater and Stormwater runoff.  
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:A discharge to the environment from a combined Sewer system that occurs because of a precipitation event when the capacity of the interceptor sewer or treatment plant is exceeded. It consists of a mixture of sanitary wastewater and Stormwater runoff.  
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;Conveyance  
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;Conveyance practice
;conveyance
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;conveyance practice
A structural BMP that is located within the drainage system where flows are concentrated and are being conveyed along corridor. Include but are not limited to pervious pipes, swales, and other similar systems.  
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:A structural practice that is located within the drainage system where flows are concentrated and are being conveyed along corridor. Include but are not limited to pervious pipes, swales, and other similar systems.  
    
;Ditch  
 
;Ditch  
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;Erosion  
 
;Erosion  
 
;erosion
 
;erosion
(1) The wearing away of the land surface by moving water, wind, ice or other geological agents, including such processes as gravitation creep; (2) Detachment and movement of soil or rock fragments by water, wind, ice or gravity (i.e. Accelerated, geological, gully, natural, rill, sheet, splash, or impact, etc).  
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:(1) The wearing away of the land surface by moving water, wind, ice or other geological agents, including such processes as gravitation creep; (2) Detachment and movement of soil or rock fragments by water, wind, ice or gravity (i.e. Accelerated, geological, gully, natural, rill, sheet, splash, or impact, etc).  
    
;Erosion control  
 
;Erosion control  
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;ET
 
;ET
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:Evapotranspiation
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;Evapotranspiration  
 
;Evapotranspiration  
 
;evapotranspiration
 
;evapotranspiration
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;Groundwater  
 
;Groundwater  
;groudnwater
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;groundwater
 
:The water below the surface, and typically below the groundwater table.  
 
:The water below the surface, and typically below the groundwater table.  
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;water table
 
;water table
 
;Water table  
 
;Water table  
The upper surface of the zone of saturation, except where the surface is formed by an impermeable body.  
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:The upper surface of the zone of saturation, except where the surface is formed by an impermeable body.  
    
;Headwater  
 
;Headwater  
 
;headwater
 
;headwater
Referring to the source of a stream or river.  
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:Referring to the source of a stream or river.  
    
;Treatment train
 
;Treatment train
 
;treatment train
 
;treatment train
Stormwater management following the hierarchical approach: Source Control measures, Conveyance Control measure and End of Pipe treatment to achieve the water quality and water balance target for lot level development of the preferred strategy.  
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:Stormwater management following the hierarchical approach: Source Control measures, Conveyance Control measure and End of Pipe treatment to achieve the water quality and water balance target for lot level development of the preferred strategy.  
    
;Hydrologic cycle  
 
;Hydrologic cycle  
Line 590: Line 612:  
;minor drainage system  
 
;minor drainage system  
 
;minor system
 
;minor system
;Minsor system
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;Minor system
 
:That storm drainage system which is frequently used for collecting, transporting, and disposing of snowmelt, miscellaneous minor flows, and storm runoff up to the capacity of the system. The capacity should be equal to the maximum rate of runoff to be expected from the minor design storm which may have a frequency of occurrence of one in 2, or 5 years. The minor system may include many features ranging from curbs and gutters to storm sewer pipes and open drainage ways.  
 
:That storm drainage system which is frequently used for collecting, transporting, and disposing of snowmelt, miscellaneous minor flows, and storm runoff up to the capacity of the system. The capacity should be equal to the maximum rate of runoff to be expected from the minor design storm which may have a frequency of occurrence of one in 2, or 5 years. The minor system may include many features ranging from curbs and gutters to storm sewer pipes and open drainage ways.  
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;Oil/grit separator
 
;Oil/grit separator
;oil and grit seperator
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;oil and grit separator
 
;OGS
 
;OGS
 
:Systems designed to remove trash, debris and some amount of sediment, oil and grease from stormwater runoff based on the principles of sedimentation for the grit and phase separation for the oil.  
 
:Systems designed to remove trash, debris and some amount of sediment, oil and grease from stormwater runoff based on the principles of sedimentation for the grit and phase separation for the oil.  
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;Pond  
 
;Pond  
 
;pond
 
;pond
:A body of water smaller than a lake, often artificially formed.  
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:A body of water smaller than a lake, often artificially formed.
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;Porosity
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;porosity
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:The porosity (n) of a mixture is the ratio of the volume of void-space to the total or bulk volume of the mixture. It is closely related to the concept of void ratio (e) where void ratio is the ratio of the volume of void-space to the volume of solids. n = Volume of voids/Total volume of mixture = e/(1+e)
    
;Precipitation  
 
;Precipitation  
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;Runoff
 
;Runoff
 
;runoff  
 
;runoff  
:That potion of the water precipitated onto a catchment area, which flows as surface discharge from the catchment area past a specified point.  
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:The portion of water precipitated onto a catchment area, which then flows as surface discharge from the catchment area past a specified point.
    
;Sand  
 
;Sand  
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;Soakaway
 
;Soakaway
 
;soakaway
 
;soakaway
:A pit into which liquids may flow and then percolate slowly into the subsoil.  
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:An underground water storage reservoir into which stormwater is directed and allowed to percolate into the underlying native subsoil.  
    
;Source control  
 
;Source control  
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;stormwater
 
;stormwater
 
:Surface runoff from at-grade surfaces, resulting from rain or snowmelt events.  
 
:Surface runoff from at-grade surfaces, resulting from rain or snowmelt events.  
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;STEP
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:Sustainable Technologies Evaluation Program
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;SWM
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:Stormwater Management
    
;Stormwater wetlands
 
;Stormwater wetlands
 
;stormwater wetlands  
 
;stormwater wetlands  
Shallow, constructed pools that capture stormwater and allow for the growth of characteristic wetland vegetation.  
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:Shallow, constructed pools that capture stormwater and allow for the growth of characteristic wetland vegetation.  
    
;Subwatershed  
 
;Subwatershed  
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;Swales
 
;Swales
 
;swales
 
;swales
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;Grass swale
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;grass swale
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;Grass swales
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;grass swales
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;Vegetated swale
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;vegetated swale
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;Vegetated swales
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;vegetated swales
 
:A shallow constructed channel, often grass-lined, which is used as an alternative to curb and channel, or as a pretreatment to other measures. Swales are generally characterized by a broad top width to depth ratio and gentle grades.  
 
:A shallow constructed channel, often grass-lined, which is used as an alternative to curb and channel, or as a pretreatment to other measures. Swales are generally characterized by a broad top width to depth ratio and gentle grades.  
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;URF
 
;URF
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:unit response function
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;Unit Response Function  
 
;Unit Response Function  
 
:Represents the hydrologic response and water quality response of the area to a pre-determined series of meteorological inputs.  
 
:Represents the hydrologic response and water quality response of the area to a pre-determined series of meteorological inputs.  
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;UV disinfection  
 
;UV disinfection  
 
:A process of disinfecting that involves subjecting the item, object, or instrument to ultraviolet radiation.  
 
:A process of disinfecting that involves subjecting the item, object, or instrument to ultraviolet radiation.  
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;Void ratio
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;void ratio
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;Void space ratio
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;void space ratio
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:The void ratio (e) of a mixture is the ratio of the volume of void-space to the volume of solids. It is closely related to the concept of porosity (n) where porosity is the ratio of the volume of void-space to the total or bulk volume of the mixture. e = Volume of voids/Volume of solids = n/(1-n)
    
;Watercourse  
 
;Watercourse  

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