2,216
edits
Changes
Jump to navigation
Jump to search
Line 266:
Line 266: ==Tips to Preserve Basic BMP Function==*Because the risk of compaction is higher when topsoil is saturated, any maintenance tasks involving vehicle (e.g., ride mower) or foot traffic on the filter bed should not be performed during wet weather.*Use push mower to maintain enhanced swales with [[grasses]] as [[vegetation]] cover or the lightest ride mower equipment available to minimize compaction of the filter bed.*Use a mulching mower to maintain enhanced swales with grass as vegetation cover or leave clippings on the surface to help replenish organic matter and nutrients in the topsoil.*Pruning of mature [[trees]] should be performed under the guidance of a Certified Arborist.*Woody vegetation should not be planted or allowed to become established where snow will be piled/stored during winter.*Removal of sediment accumulated on the filter bed surface should be performed by hand with rake and shovel, or vacuum equipment where feasible. If a small excavator is the chosen method, keep the excavator off the BMP footprint to avoid damage to side slopes/embankments and compaction of the [[topsoil]].
Line 380:
Line 372:
Line 394:
Line 394: Inlet is producing concentrated flow and causing filter bed erosion.
Inspection and Maintenance: Enhanced Swales (view source)
Revision as of 17:06, 6 July 2022
, 2 years agono edit summary
|-
|-
|}
|}
==Routine Maintenance - Key Components and I&M Tasks==
==Routine Maintenance - Key Components and I&M Tasks==
|-
|-
|}
|}
==Tips to Preserve Basic BMP Function==
*Because the risk of compaction is higher when topsoil is saturated, any maintenance tasks involving vehicle (e.g., ride mower) or foot traffic on the filter bed should not be performed during wet weather.
*Use push mower to maintain enhanced swales with [[grasses]] as [[vegetation]] cover or the lightest ride mower equipment available to minimize compaction of the filter bed.
*Use a mulching mower to maintain enhanced swales with grass as vegetation cover or leave clippings on the surface to help replenish organic matter and nutrients in the topsoil.
*Pruning of mature [[trees]] should be performed under the guidance of a Certified Arborist.
*Woody vegetation should not be planted or allowed to become established where snow will be piled/stored during winter.
*Removal of sediment accumulated on the filter bed surface should be performed by hand with rake and shovel, or vacuum equipment where feasible. If a small excavator is the chosen method, keep the excavator off the BMP footprint to avoid damage to side slopes/embankments and compaction of the [[topsoil]].
==Rehabilitation & Repair==
==Rehabilitation & Repair==
Table below provides guidance on rehabilitation and repair work specific to bioretention and dry swales organized according to BMP component.
Table below provides guidance on rehabilitation and repair work specific to enhanced grass swales organized according to BMP component.
{|{| class="wikitable" style="width: 1000px;"
{|{| class="wikitable" style="width: 1000px;"
|+'''Bioretention/Swales: Key Components, Typical Issues and Rehabilitation Requirements'''
|+'''Enhanced Swales: Key Components, Typical Issues and Rehabilitation Requirements'''
|-
|-
!Component
!Component
|'''[[Inlets]]'''
|'''[[Inlets]]'''
|
|
Inlets are producing concentrated flow and causing filter bed erosion
|
|
*Add [[Level spreaders|flow spreading device]] or re-grade existing device back to level. Rake to regrade damaged portion of the filter bed and replant or restore [[mulch]]/[[stone]] cover. If problem persists, replace some mulch cover with stone.
*Add [[Level spreaders|flow spreading device]] or re-grade existing device back to level. Rake to regrade damaged portion of the filter bed and replant or restore [[mulch]]/[[stone]] cover. If problem persists, replace some mulch cover with stone.