Constructed wetlands are extensively vegetated water bodies that use sedimentation, filtration and biological uptake processes to remove pollutants from stormwater. They are generally not suitable where contaminated or nutrient rich groundwater is intercepted. Significant land area is usually required to accommodate large detention volumes.
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Audit
Weather conditions: temperature, rainfall, etc.
Date of last rainfall (approx)
Images of site (attach)
CIVIL COMPONENTS TO INSPECT
INLETS
Evidence of erosion
Yes
No
Actioned
Blockage
Yes
No
Actioned
Damage
Yes
No
Actioned
Standing water
Yes
No
Actioned
Evidence of excessive sediment build-up (eg more than 20% of pipe opening blocked with sediment)
Yes
No
Actioned
If a 'bubble-up inlet pit/pipe' is present - is it holding water?
Yes
No
Actioned
Maintenance undertaken
Further action required
OUTLETS
Evidence of erosion
Yes
No
Actioned
Blockage
Yes
No
Actioned
Damage
Yes
No
Actioned
Standing water
Yes
No
Actioned
Outlet freely draining
Yes
No
Actioned
Evidence of excessive sediment build-up (eg more than 20% of pipe opening blocked with sediment)
Yes
No
Actioned
Maintenance undertaken
Further action required
BATTERS & BANKS
Evidence of erosion
Yes
No
Actioned
Is there sediment accumulated at the base of the swale?
Yes
No
Actioned
Is mosquito larvae present?
Yes
No
Actioned
Is there evidence of surface ponding in the base of the constructed wetland 24 hours after rainfall?
Yes
No
Actioned
Is there evidence of permanently saturated soils in the base of the constructed wetland 24 hours after rainfall?
Yes
No
Actioned
Evidence of trampling
Yes
No
Actioned
Evidence of bike riding
Yes
No
Actioned
Evidence of vandalism
Yes
No
Actioned
Evidence of dumping
Yes
No
Actioned
Any other types of physical damage? List here:
Maintenance undertaken
Further action required
LANDSCAPE COMPONENTS
Turf or vegetation covers at least 90% of constructed wetland's surface
Yes
No
Actioned
Plants healthy, free from disease and vigorously growing
Yes
No
Actioned
Plants healthy, free from disease and vigorously growing
Yes
No
Actioned
Less than 10% of constructed wetland covered in weeds.
Yes
No
Actioned
Constructed wetland free of litter (i.e. less than 1 piece per 4 sqm)
Yes
No
Actioned
Damage by pest animals
Yes
No
Actioned
Damage by insects
Yes
No
Actioned
Maintenance undertaken
Further action required
OVERVIEW
Overall inspection observations
Actions to be undertaken
Further comments
Time spent at site.
Shelley Shepherd
NWW Constructed Wetlands Maintenance
Constructed wetlands are extensively vegetated water bodies that use sedimentation, filtration and biological uptake processes to remove pollutants from stormwater. They are generally not suitable where contaminated or nutrient rich groundwater is intercepted. Significant land area is usually required to accommodate large detention volumes.
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