2,216
edits
Changes
Jump to navigation
Jump to search
Line 53:
Line 53: :Biofilters Line 176:
Line 176:
Line 646:
Line 652:
Line 678:
Line 688:
Line 761:
Line 771:
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.
;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
;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
;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