Swmp

            In addition to these measures, stockpiles and construction materials will not be stored within
            the road reserve and shall be contained by downstream sediment fencing, as well as
            covered when required.

                        3.2.1 Erosion and Sediment Control Monitoring

            The control measures described above will be maintained in an effective operational
            condition throughout the duration of the construction works.

            Regular inspections will be carried out by the contractor and any defects in the erosion and
            sediment control devices specified will be remedied as soon as practicable. Inspections to
            be carried out (in accordance with the IECA Best Practice Erosion and Sediment Control
            [BPESC]) are as follows:

                    1. Routine Inspection – is to be carried out daily while work is being carried out on site,
                       or weekly while works are not being carried out.

                    2. Preventative inspection – to be carried out before rain is forecast.

                    3. Reactive inspection – to be carried out after a rainfall event sufficient to mobilise
                       surface sediment on the site.

            Documentation of any defects will also be carried out in accordance with BPESC, which
            includes recording the date the defect was identified, a description of the defect, the cause
            of the defect and measures that can be implemented to reduce the likelihood of the defect
            occurring again. Once the device has been repaired, the date of repair and the solution
            implemented will also be recorded in the documentation.



            4. CONCLUSION
            The assessment has described how stormwater run-off from the proposed development will
            be managed to comply with the relevant requirements. In summary:

                    •   During construction, erosion and sediment control measures will be employed as
                        described in Section 3.2. These measures are to be inspected and maintained
                        regularly during construction, as described in Section 3.2.1.

                    •   As the site development area does not exceed the 2,500m² threshold to trigger the
                        requirements of SPP 2017, no stormwater quality targets are imposed on the site. It
                        is noted that the upgrade of the failing driveway access is expected to reduce
                        potential sediment and gross pollutants entering the downstream waterway by
                        eliminating loose material and aggregates from the run-off (refer Section 3.1).

                    •   The development will increase the impervious area by approximately 33m² resulting
                        in an increase to peak runoff from the site. This increase is to be mitigated with the
                        provision of a 3,000L underground stormwater detention tank (refer Section 3.1).

                    •   A new kerb adaptor in Bottlebrush Avenue is proposed as the legal point of
                        discharge (refer Section 3.1)

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