E - Engineering Code Assessment.pdf

CONSTRUCTION AND ESTABLISHMENT OF STORMWATER MANAGEMENT SYSTEMS


 Performance Outcomes                Acceptable Outcomes               Response


PO14                                AO14.1                             Complies.
Construction methods provide        An erosion and sediment
for appropriate controls to avoid   control plan prepared in           The stormwater report
entry and transport of litter,      accordance with the                outlines during and post
sediment, and associated            International Erosion Control      construction stormwater
prescribed water contaminants       Association Best Practice          quality control outcomes, to
into receiving waters.              Books demonstrates that the        avoid transport of litter, and
                                    capture and release of             sediments to receiving waters.
                                    stormwater achieves the design
                                    objectives listed in Table A:
                                    Construction phase –
                                    stormwater management
                                    design objectives of the State
                                    Planning Policy (Appendix 2).

                                    AO14.2
                                    Construction works are
                                    designed and managed to
                                    restrict the extent of clearing
                                    and soil exposure to the
                                    minimum necessary for access,
                                    and safe construction at any
                                    one time.

                                    AO14.3
                                    For buildings:
                                    (a) upstream runoff is diverted
                                        around the construction
                                        site;
                                    (b) sediment barriers are
                                        provided downslope of
                                        disturbed areas to prevent
                                        sediment washing into
                                        gutters, drains and
                                        waterways , wetlands or
                                        drainage lines either on or
                                        off the site; and
                                    (c) temporary or permanent
                                        downpipes are connected
                                        to the stormwater system
                                        before laying the roof; or
                                    (d) localised erosion is avoided
                                        by directing flow from
                                        downpipes over non-
                                        erosive areas.

                                    AO14.4
                                    Chemical flocculants used as
                                    part of an erosion and sediment
                                    control plan do not harm the
                                    environmental values within
                                    receiving waters.