22-05-23 Operational Management and Maintenance Plan_Issue A

 22 May 2023




 Schedule of Site Visits
 Purpose of Visit                               Frequency                    J     F      M A M J         J   A   S   O N D
 Routine Inspection                             Monthly                      √    √       √   √   √   √   √   √   √   √   √   √
 Annual Inspection                              Yearly                                        √
 Routine Maintenance                            Twice Yearly                                  √                       √
 Routine Clean-Out of
                              Every Two Years                √
 Sediment
  Table 1 - General recommended program of inspection and maintenance – Bioretention Basin

For additional information and guidance on how to undertake maintenance activities, refer to the
Healthy Waterways: Maintaining Vegetated Stormwater Assets Version 1 February 2012.

A bioretention basin inspection and maintenance checklist from the Maintaining Vegetated Assets
Guideline is attached in Appendix 3.


3.1.1.3 Watering
Time of year and the climate will determine the frequency of watering. However, during
establishment, regular watering is essential for plants. Successfully establishing plants is
dependent on the frequency of watering, which in turn is dependent on rainfall, the maturity of the
plant stock and the water-holding capacity of the soil. The following watering program is generally
adequate but should be adjusted to suit site conditions:

     •    Week 1 – 6   5 visits per week
     •    Week 7 – 10 3 visits per week
     •    Week 11 – 12 2 visits per week

In the absence of rain, it is recommended that each plant receives 2.5 – 5.0 litres of water per week
during the first six weeks (40mm of watering per week during establishment).

After the initial four-month period, watering may still be required, particularly during the first
winter or dry period. Watering requirements for healthy vegetation can be determined by ongoing
inspections.




 Excellence with Economy in Engineering                                                                                           5
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