Changes

;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.

;Bioretention

;Bioretention

: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.

;Master environmental servicing plan

;Master Environmental Servicing Plan

;MESP

;MESP

:Is a community-scale planning assessment of servicing and environmental considerations for a development project.

:Is a community-scale planning assessment of servicing and environmental considerations for a development project.

;Mulch

;Mulch

:Shredded woody material or leaf compost used as a top dressing over vegetation beds that provides a source of soil nutrients and helps retain soil moisture; in bioretention cells and dry swales the surface mulch layer provides pollutant removal and improves growing conditions for the selected plants; shredded hardwood bark has been found to work best as it is less likely to float.

:Shredded woody material or leaf compost used as a top dressing over vegetation beds that provides a source of soil nutrients and helps retain soil moisture; in bioretention cells and dry swales the surface mulch layer provides pollutant removal and improves growing conditions for the selected plants; shredded hardwood bark has been found to work best as it is less likely to float.

;Native plants

;Native plants

:Defined as those plants (including grasses, herbaceous species, shrubs, vines and trees) that have historically existed within a particular area.  Native plants have co-evolved with the local ecosystems and natural processes.

:Defined as those plants (including grasses, herbaceous species, shrubs, vines and trees) that have historically existed within a particular area.  Native plants have co-evolved with the local ecosystems and natural processes.

;Native soil

;Native soil

:The natural ground material characteristic of or existing by virtue of geographic origin.

:The natural ground material characteristic of or existing by virtue of geographic origin.

;Offline

;Offline

:Refers to a system that when full, stormwater will bypass the practice. Offline systems use flow splitters or bypass channels that only allow the water quality volume to enter the facility. This may be achieved with a pipe, weir, or curb opening sized for the target flow, but in conjunction, create a bypass channel so that higher flows do not pass over the surface of the filter bed.

:Refers to a system that when full, stormwater will bypass the practice. Offline systems use flow splitters or bypass channels that only allow the water quality volume to enter the facility. This may be achieved with a pipe, weir, or curb opening sized for the target flow, but in conjunction, create a bypass channel so that higher flows do not pass over the surface of the filter bed.

;Physiography

;Physiography

:The physical features of the land, including topography, morphology and geologic origin. The physical feature of the land has an influence on the surface water movement and the interactions between surface water and groundwater.

:The physical features of the land, including topography, morphology and geologic origin. The physical feature of the land has an influence on the surface water movement and the interactions between surface water and groundwater.

;Pollution hot spot

;Pollution hot spot

:Areas where certain land uses or activities have the potential to generate highly contaminated runoff (e.g., vehicle fuelling, service or demolition areas, outdoor storage and handling areas for hazardous materials and some heavy industry sites).

:Areas where certain land uses or activities have the potential to generate highly contaminated runoff (e.g., vehicle fuelling, service or demolition areas, outdoor storage and handling areas for hazardous materials and some heavy industry sites).

;Pollutant load

;Pollutant load

:The total mass of a pollutant entering a waterbody over a defined time period.

:The total mass of a pollutant entering a waterbody over a defined time period.

;Predevelopment

;Predevelopment

:refers to the characteristics and functions of a system prior to urban development.

:refers to the characteristics and functions of a system prior to urban development.

;Pretreatment

;Pretreatment

:Initial capturing and removal of unwanted contaminants, such as debris, sediment, leaves and pollutants, from stormwater before reaching a best management practice; Examples include, settling forebays, vegetated filter strips and gravel diaphragms.

:Initial capturing and removal of unwanted contaminants, such as debris, sediment, leaves and pollutants, from stormwater before reaching a best management practice; Examples include, settling forebays, vegetated filter strips and gravel diaphragms.

;Rain garden

;Rain garden

:A lot level bioretention cell designed to receive and detain, infiltrate and filter runoff, typically used for discharge from downspouts.

:A lot level bioretention cell designed to receive and detain, infiltrate and filter runoff, typically used for discharge from downspouts.

;Rainwater harvesting

;Rainwater harvesting

:Is the practice of intercepting, conveying and storing rainwater for future use. The captured rainwater is typically used for outdoor non-potable water uses such as irrigation and pressure washing, or in the building to flush toilets or urinals or other uses that do not require potable water.

: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.

;Recharge

;Recharge

:The infiltration and movement of surface water into the soil, past the vegetation root zone, to the zone of saturation or water table.

:The infiltration and movement of surface water into the soil, past the vegetation root zone, to the zone of saturation or water table.

;Runoff

;Runoff

:Water from rain, snow melt, or irrigation that flows over the land surface.

:Water from rain, snow melt, or irrigation that flows over the land surface.

;Sedimentation

;Sedimentation

:Settling-out or deposition of particulate matter suspended in runoff.

:Settling-out or deposition of particulate matter suspended in runoff.

;Soakaway

;Soakaway

:An excavated area lined with geotextile filter cloth and filled with clean granular stone or other void forming material, that receives runoff and allow it to infiltrate into the native soil; can also be referred to as infiltration galleries, French drains, dry wells or soakaway pits.

:An excavated area lined with geotextile filter cloth and filled with clean granular stone or other void forming material, that receives runoff and allow it to infiltrate into the native soil; can also be referred to as infiltration galleries, French drains, dry wells or soakaway pits.

;Soil amendment

;Soil amendment

:The practice of adding organic material, such as mulch or compost to topsoil to improve fertility, and tilling of the native soils to reverse compaction and restore its water retaining capacity.

:The practice of adding organic material, such as mulch or compost to topsoil to improve fertility, and tilling of the native soils to reverse compaction and restore its water retaining capacity.

;Standing water

;Standing water

:Water ponded on the ground surface.

:Water ponded on the ground surface.

;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.

:An underlying aggregate material bed that temporarily stores stormwater before infiltrating into the native soil or being conveyed by an underdrain pipe.

;Stormwater planter  

;Stormwater planter

:A bioretention cell that features an impermeable liner that collects and treats stormwater through sedimentation and filtration only (i.e., no infiltration).

:A bioretention cell that features an impermeable liner that collects and treats stormwater through sedimentation and filtration only (i.e., no infiltration).