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no edit summary
;Biofilter
;Biofilter
;biofilter
;biofilter
;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.
;cisterns
;cisterns
:Tank used to store rainwater (typically roof runoff) for later use.
:Tank used to store rainwater (typically roof runoff) for later use.
;Cleanout
;cleanout
;Cleanouts
;cleanouts
;Clean out
;clean out
;Clean-out
;clean-out
;Clean-Out
;Clean Out
:Cleanouts are "a fitting access in a drainage system or venting system that is installed to provide access for cleaning and inspection and that is provided with a readily replaceable air tight cover" (O.Reg 332/12: Building Code, 2022).
;Compost
;Compost
;first flush
;first flush
:Initial pulse of stormwater runoff which picks up the pollutants that have settled on surfaces during the dry period. The first flush contains the highest pollutant concentrations.
:Initial pulse of stormwater runoff which picks up the pollutants that have settled on surfaces during the dry period. The first flush contains the highest pollutant concentrations.
;FIT
;FIT work
;FIT Work
;FIT (Forensic Inspection and testing)
:FIT work involves the application of a similar set of inspection and testing indicators as those used in Performance Verification inspections, but focuses on diagnosing suspected problems with the following objectives in mind: (1) Confirm whether or not problems with BMP function exist; (2) Identify the causes of confirmed problems; (3) Determine corrective actions needed.
;Forebay
;Forebay
;I/P ratio
;I/P ratio
:The ratio of the catchment (impervious area) to the footprint area of the receiving BMP (pervious area).
:The ratio of the impervious catchment (drainage) area to the pervious (footprint) area of the receiving BMP.
;LSRCA
;LSRCA
;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.
;Rational Method
;Rational method
;rational method
:This formula is used to calculate peak rates of runoff when designing drainage LID BMPs in urban area. It is useful in estimating runoff on relatively small areas (roofs, parking lots, medians, road right-of-ways, etc.)
;RWH
;RWH
;standing water
;standing water
:Water ponded on the ground surface.
:Water ponded on the ground surface.
;Stoichiometry
;stoichiometry
:Stoichiometry in the terms of stormwater nutrient ratios is the consequences of mass balance of chemical elements constrained by either biological or ecological factors (i.e. media, sand, vegetation, soils, etc.).
;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.
;Storage reservoir
;storage reservoir
: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
;TRCA
;TRCA
:Toronto Region Conservation Authority
:Toronto and Region Conservation Authority
;TSS
;TSS
;minor drainage system
;minor drainage system
;minor system
;minor system
;Minsor system
;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.
;Oil/grit separator
;Oil/grit separator
;oil and grit seperator
;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.
;Pond
;Pond
;pond
;pond
:A body of water smaller than a lake, often artificially formed.
:A body of water smaller than a lake, often artificially formed.
;Porosity
;porosity
: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
;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.
: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
;Soakaway
;Soakaway
;soakaway
;soakaway
:A pit into which liquids may flow and then percolate slowly into the subsoil.
:An underground water storage reservoir into which stormwater is directed and allowed to percolate into the underlying native subsoil.
;Source control
;Source control
;Swales
;Swales
;swales
;swales
;Grass swale
;grass swale
;Grass swales
;grass swales
;Vegetated swale
;vegetated swale
;Vegetated swales
;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.
;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.
;Void ratio
;void ratio
;Void space ratio
;void space ratio
: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