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Inspection and Maintenance: Vegetated Filter Strips (view source)
Revision as of 20:26, 11 July 2022
, 1 year agono edit summary
*'''[[Swales]]''': Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination of both designs may increase the benefit.
*'''[[Swales]]''': Swales are linear landscape features consisting of a drainage channel with gently sloping sides. Underground they may be filled with engineered soil and/or contain a water storage layer of coarse gravel material. Two variations on a basic swale are recommended as low impact development strategies, although using a combination of both designs may increase the benefit.
*'''[[Bioswales]]''' are sometimes referred to as 'dry swales', 'vegetated swales', or 'water quality swales'. This type of BMP is form of [[bioretention]] with a long, linear shape (surface area typically >2:1 length:width) and a slope which conveys water and generally contains various water tolerant [[vegetation]].
*'''[[Bioswales]]''' are sometimes referred to as 'dry swales', 'vegetated swales', or 'water quality swales'. This type of BMP is form of [[bioretention]] with a long, linear shape (surface area typically >2:1 length:width) and a slope which conveys water and generally contains various water tolerant [[vegetation]].
==Inspection and Testing Framework==
[[File:Visual indicator bioretention.PNG|thumb|300px|Example of a visual indicator to be used when assessing the condition of a given LID feature. Here we see excessive sediment accumulation at the [[inlet]]/[[curb cut]] of a bioretention cell. Source: (TRCA, 2016).<ref>STEP. 2016. Low Impact Development Stormwater Management Practice Inspection and Maintenance Guide. https://sustainabletechnologies.ca/app/uploads/2016/08/LID-IM-Guide-2016-1.pdf</ref>.]]
{| class="wikitable" style="width: 900px;"
|+'''Visual Indicators Framework - Vegetated Filter Strips'''
|-
!<br>'''Component'''
!<br>'''Indicators'''
!<br>'''Construction Inspection'''
!<br>'''Assumption Inspection'''
!<br>'''Routine Operation Inspection'''
!<br>'''Verification Inspection'''
|-
|rowspan="2"|'''[[Bioretention: Sizing|Contributing Drainage Area]]'''
|-
|CDA condition
|x
|x
|x
|x
|-
|rowspan="3"|'''[[Inlets|Inlet]]'''
|-
|Inlet/Flow Spreader Structural Integrity
|
|x
|x
|x
|-
|Inlet/Flow Spreader Structural Integrity
|x
|x
|x
|x
|-
|rowspan="2"|'''Perimeter'''
|-
|BMP dimensions
|x
|x
|
|x
|-
|rowspan="4"|'''[[Absorbent landscapes|Filter Bed]]'''
|-
|Standing water
|
|x
|x
|x
|-
|Trash
|
|x
|x
|
|-
|Filter bed surface sinking
|
|x
|x
|x
|-
|rowspan="4"|'''[[Vegetation|Planting Area]]'''
|-
|Vegetation cover
|x
|x
|x
|x
|-
|Vegetation condition
|
|x
|x
|
|-
|Vegetation composition
|x
|x
|x
|
|-
|-
|}<br>
</br>
[[File:Soil testing indicators.PNG|thumb|300px|The image above shows a manual soil corer, a split soil core sampler kit which preserves the soil sample for further testing (i.e., bulk density) and acrylic core sample tubes. All examples of tools to be use for soil characterization testing. Source: (TRCA, 2016).<ref>STEP. 2016. Low Impact Development Stormwater Management Practice Inspection and Maintenance Guide. https://sustainabletechnologies.ca/app/uploads/2016/08/LID-IM-Guide-2016-1.pdf</ref>.]]
{| class="wikitable" style="width: 900px;"
|+'''Testing Indicators Framework - Bioretention/Swales'''
|-
!<br>'''Component'''
!<br>'''Indicators'''
!<br>'''Construction Inspection'''
!<br>'''Assumption Inspection'''
!<br>'''Routine Operation Inspection'''
!<br>'''Verification Inspection'''
|-
|rowspan="3"|'''Testing Indicators'''
|-
|Soil characterization testing
|x
|x
|
|(x)
|-
|Surface infiltration rate testing
|
|x
|
|(x)
|-
|colspan="7" style="text-align: center;" |'''<u><span title=>Note:''' (x) denotes indicators to be used for Performance Verification inspections only (i.e., not for Maintenance Verification inspections) </span></u>
|-
|}