Stormwater Treatment & Water Quality Management Plan_April2014

4.0       MAINTENANCE MANUAL


4.1 BIORETENTION SYSTEMS MAINTENANCE PROCEDURES
Objective        To maintain the bioretention systems to ensure that it continues to remove pollutants from stormwater runoff, as
                 intended during the design phase including:
                       Bioretention Basins 1, 2 and 3
                       Bioretetnion Swales 1 and 2
                       Roadside BioBasins 1a, 1b and 2
Actions          Description                                                               Responsibility Timeframe
General                Remove accumulated litter / debris to pond and grates              Developer       Every three months for first
Maintenance                                                                                                year of operation – during
                       Remove accumulated sediments at inlet                                              On-maintenance period
                       Remove impermeable layer if water ponds for more than a
                        few hours
                       Remove weeds and dead plants
                       Replace plants where necessary
                       Water plants as necessary
                       Reinstate areas that have eroded and holes in media
                       Ensure energy dissipation at entry and exit points is adequate
                        and repair if necessary
                       Control erosion and sediment loss upstream or within system
                        where necessary
                       Check builders working upstream block inlet to biopod with
                        filter bags and ring edge with sediment fence. If not compliant,
                        ring building compliance officer.
Following Off-         Remove accumulated litter / debris to pond and grates              Council         Every six months (or as