Att 4 - SWMP · MCU21/0117

                     4.2.2 Operational Maintenance

            Periodic maintenance and monitoring of stormwater infrastructure proposed for this
            development should be carried out to ensure they are operating effectively during the
            post-construction phase. After the on-maintenance period, the responsibility for these
            maintenance activities shall be the body corporate for the site who may appoint a suitably
            qualified maintenance contractor to undertake these activities.

            The field inlet grates, pits and underground pipes shall be inspected for blockage or
            damage at least 6 monthly or after significant rainfall event. Any blockages shall be
            cleared from the system, and damage assessed to determine if it impacts on the function
            of the system or may pose a hazard that will require repair.

            The litter baskets shall be maintained in accordance with the manufacturer’s specifications.
            Refer to Appendix C Ecosol Litter Basket Technical Specification for further details.

            The bioretention areas shall be maintained following a schedule of routine inspections
            undertaken after every significant rainfall event (30mm of rainfall in a 24-hour period) or on
            a three (3) monthly basis within the first twelve (12) months and on a six (6) monthly basis
            thereafter. The inspection shall ensure the proper functioning and condition of the
            bioretention area and ensure that the planting and vegetation health is suitably
            maintained. An inspection checklist from the Healthy Waterways Technical Design
            Guidelines for Southeast Queensland has been provided in Appendix D Bioretention
            Inspection Checklist that provides the structure for the inspections to be undertaken.

            In addition to regular inspections, the first 4 months of establishment of the bioretention
            areas requires a watering frequency of:

               i.    Week 1 - 6 - 5 times per week

               ii.   Week 6-10 – 3 times per week

              iii.   Week 11-15 – 2 times per week

            After 5 months, watering frequency shall be adjusted based on the local conditions to
            ensure plants are maintained in a healthy state.




                                                                                                          Page 18 of 26
P +61 7 5211 1003         A 37 Mary St, Noosaville Qld 4566   E [email protected]        recorconsulting.com