24647 Seaview Tce Enviro Mgmt Plan

                                                                                                    EWSM- 1 EROSION AND SEDIMENT CONTROL (STORMWATER MANAGEMENT)
                                                                                                                                                          Version 1


Hierarchy of Control (HOC): 1. Eliminate 2. Substitute 3. Isolate 4. Engineer 5. Admin 6. PPE

                                    Sediment controls are not in good       5    All erosion and sediment control measures should be inspected:
                                    order and working effectively                 - At least daily when rain is occurring;
                                                                                  - At least weekly (even if work is not occurring on-site)
                                                                                  - Within 24 hours prior to expected rainfall; and
                                                                                  - Within 18 hours of a rainfall event of sufficient intensity and
                                                                                       duration to cause on-site runoff
Control water movement through      Mass soil loss and        significant   5    Divert clean stormwater (upslope water) runoff outside the site so that   Site Manager
the site                            sediment runoff site                          it does not flow through the site                                         HSE Advisor
                                                                                 Sediment traps must be installed and operated to both collect and
                                                                                  retain sediment.
                                                                                 All erosion and sediment control measures, including drainage
                                                                                  control measures, must be maintained in proper working order at all
                                                                                  times during their operational lives.
Material Stockpiles                 Contaminated topsoil                    5    Topsoil stockpile needs to be separated to other materials and            Site Manager
                                                                                  located at the undisturbed area
                                                                                 Topsoil is stockpiled at maximum 2m height
                                                                                 Long term spoil stockpiles (> 28 days) to be covered or stabilised.
                                    Cross-contaminated with topsoil         5    Sufficient land area must be provided for the short-term stockpiling of   Site Manager
                                                                                  construction materials.
                                                                                 Ensure excavated material is not placed adjacent to protect
                                                                                  vegetation, stream banks, or within locations where it may become
                                                                                  an unacceptable source of sediment runoff.
                                                                                 These stockpiles should ideally be located within areas that would
                                                                                  eventually need to be disturbed anyway.
                                    Excess sediment runoff                       Material stockpiles should be located away from overland flow paths
                                                                                  and concentrated overland flow
                                                                                 Stockpiles of erodible materials (e.g. earth and sand) need to be
                                                                                  located within the site’s sediment control zone.
Stormwater kerb inlets in active    Sediment socks fall into kerb inlet     5    Daily check on sediment controls on council kerb inlets                   Hutchinson Builders
construction areas as well as the                                                                                                                           Foreman/ HSE Advisor
basement level receiving
deliveries areas are to be          Sediment deposition within creeks       5    Ensure all the sediment controls are installed as approved Erosion        Hutchinson Builders
protected                           and wetlands can cause long-term              and Sediment Control plan and in good order                               Foreman
                                    changes to aquatic ecosystems
                                    and plant species (e.g. through
                                    weed infestation).                                                                                                      Workers



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