20210041 27 Bottlebrush Ave Stormwater

                    4. Sediment inlet filters are to be provided to pits during construction works.

                    5. A kerb inlet sediment trap is to be in place at the kerb inlet in Bottlebrush Avenue
                       during construction works.

                    6. Where the verge area within the road reserve has been disturbed, grass filter strips
                       are to be installed behind the kerb

            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 shall 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 a small-scale residential unit building, the development is not considered to
                        significantly alter the water quality from the site during the operational period.




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