2,216
edits
Changes
Jump to navigation
Jump to search
Line 20:
Line 20:
Inspection and Maintenance: Underground Infiltration Systems (view source)
Revision as of 14:40, 25 July 2022
, 1 year agono edit summary
*'''[[Infiltration chambers]]''': Include a range of proprietary modular structures installed underground that create large void spaces for temporary storage of stormwater while providing sufficient load bearing capacity to allow construction of structures on top of them. Applications are similar to infiltration trenches. Also known as [[Infiltration chambers: Specifications|infiltration tanks or vaults]].
*'''[[Infiltration chambers]]''': Include a range of proprietary modular structures installed underground that create large void spaces for temporary storage of stormwater while providing sufficient load bearing capacity to allow construction of structures on top of them. Applications are similar to infiltration trenches. Also known as [[Infiltration chambers: Specifications|infiltration tanks or vaults]].
*'''[[Exfiltration trenches|Perforated pipe storm sewer systems]] or [[Exfiltration trenches]]''': Linear-oriented [[infiltration trenches]] installed parallel with conventional storm sewer pipes and catchbasins that receive stormwater from them. May include manholes with [[Flow through riser|perforated risers]]. Also known as exfiltration storm sewer, percolation drainage, or clean water collector systems.
*'''[[Exfiltration trenches|Perforated pipe storm sewer systems]] or [[Exfiltration trenches]]''': Linear-oriented [[infiltration trenches]] installed parallel with conventional storm sewer pipes and catchbasins that receive stormwater from them. May include manholes with [[Flow through riser|perforated risers]]. Also known as exfiltration storm sewer, percolation drainage, or clean water collector systems.
==Inspection and Testing Framework==
[[File:Articulatedblocksystem.png|thumb|300px|Permeable articulated block system at the LSRCA headquarters in Newmarket, ON is designed for heavy loads. This example shows an appropriate pavement surface condition when conducting any of, construction, assumption, routine or verification inspections.]]
{| class="wikitable" style="width: 900px;"
|+'''Visual Indicators Framework - Underground Infiltration Systems'''
|-
!<br>'''Component'''
!<br>'''Indicators'''
!<br>'''Construction Inspection'''
!<br>'''Assumption Inspection'''
!<br>'''Routine Operation Inspection'''
!<br>'''Verification Inspection'''
|-
|rowspan="2"|'''[[Infiltration: Sizing and modeling|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="2"|'''[[Construction|Filter Bed]]'''
|-
|Filter bed sediment accumulation
|
|x
|x
|x
|-
|rowspan="3"|'''[[Underdrain]] & [[Wells|Monitoring Well]]'''
|-
|Monitoring well condition
|x
|x
|x
|x
|-
|Sub-drain/Perforated pipe obstruction
|
|x
|
|x
|-
|rowspan="2"|'''[[Overflow|Outlets]]'''
|-
|Overflow outlet obstruction
|x
|x
|x
|x
|-
|rowspan="3"|'''[[Flow through riser|Control Structure]]'''
|-
|Control structure condition
|x
|x
|x
|x
|-
|Control structure sediment accumulation
|-
|x
|x
|x
|x
|-
|}<br>
</br>
[[File:Sediment accumulation perm.JPG|thumb|300px|Permeable pavement in need of maintenance as excess sediment and unwanted vegetation growth has begun to occur near the perimeter of the installation. Source: (TRCA, 2016).<ref>STEP. 2018. Fact Sheet - Inspection and Maintenance of Stormwater Best Management Practices: Permeable Pavements. https://sustainabletechnologies.ca/app/uploads/2018/02/Permeable-Pavement-Fact-Sheet.pdf</ref>.]]
{| class="wikitable" style="width: 900px;"
|+'''Testing Indicators Framework - Underground Infiltration Systems'''
|-
!<br>'''Component'''
!<br>'''Indicators'''
!<br>'''Construction Inspection'''
!<br>'''Assumption Inspection'''
!<br>'''Routine Operation Inspection'''
!<br>'''Verification Inspection'''
|-
|rowspan="4"|'''Testing Indicators'''
|-
|Sediment accumulation testing
|x
|x
|x
|x
|-
|Natural or simulated storm event testing
|
|x
|
|(x)
|-
|Continuous monitoring
|
|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>
|-
|}