Page 146 - Bexley SuDS DESIGN & EVALUATION

Detailed Design 9.12.3 Example of SuDS and Site Maintenance Normal site Suggested

care (Site) or
Type
Activity
SuDS-specific
frequency
maintenance
(SuDS)
Regular Maintenance

LItter
Pick up all litter in SUDS Landscape areas along
with remainder of the site – remove from site Site 1 visit monthly
Grass Mow all grass verges, paths and amenity grass at Site As required or
35-50mm with 75mm max. Leaving cuttings in situ 1 visit monthly

Grass Mow all dry swales, dry SUDS basins and margins Site 4-8 visits per
to low flow channels and other SUDS features at year or as
100mm with 150mm max. Cut wet swales or basins required
annually as wildflower areas – 1st and last cuts to be
collected
Grass Wildflower areas strimmed to 100mm in Sept or at Site 1 visit annually
end of school holidays – all cuttings removed
Or
Wildflower areas strimmed to 100mm on 3 year
141 rotation – 30% each year – all cuttings removed 1 visit annually
inlets & Inspect monthly, remove silt from slab aprons and SuDS 1 visit monthly
outlets debris. Strim 1m round for access

Permeable Sweep all paving regularly to keep surface tidy Site 1 visit annually
paving or as required

Occasional Tasks

Permeable Sweep and suction brush permeable paving when SuDS As required -
paving ponding occurs estimate 10-15
year intervals
Flow Annual inspection of control chambers - remove silt SuDS 1 visit annually
controls and check free flow

Wetland & Wetland vegetation to be cut at 100mm on 3 – 5 Site As required
pond year rotation or 30% each year. All cuttings to be
removed to wildlife piles or from site.

London Borough of Bexley SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates