Reference Document - Flood & Stormwater Management Plan 28_8_2025

                 4. CONSTRUCTION PHASE
                    MANAGEMENT
                 4.1.       Erosion and Sediment Control
                 The management of the site during the construction phase is an important step in ensuring water quality
                 standards are achieved. Implementation of best practice Erosion and Sediment Control techniques is
                 imperative to managing the quality of runoff affected by construction works.

                 The following points provide general guidance on the management of stormwater during the construction
                 phase. Detailed Erosion and Sediment Control Management Plans should be developed in conjunction with
                 the Operational Works design prior to construction works commencing in accordance with the International
                 Erosion Control Association (IECA) - “Best Practice Erosion and Sediment Control (BPESC) document” and
                 overseen by a Certified Professional in Erosion and Sediment Control (CPESC) or Registered Professional
                 Engineer Queensland (RPEQ).

                     1.   Establish a single stabilised entry/exit point for the site works;
                     2.   Construct a shake-down grid at the entrance to facilitate the removal of sediment from trucks leaving
                          the site. The access road extending from the end of existing road or kerb to the grid should comprise
                          a 150-200mm deep pad of 40mm crushed rock;
                     3.   Install sediment fences along the lower boundaries of the site;
                     4.   Construct one or more strategically placed sediment basins in the proposed drainage reserve and
                          construct contour drains / bunds to direct disturbed runoff to the sediment basins;
                     5.   Install bins and/or wind-proof litter areas on-site to minimise the dispersion of gross pollutants;
                     6.   Maintain on site sufficient materials necessary for the emergency repair of all erosion control
                          devices. This includes silt fences, clean crushed rock for reapplication to the entrance road and for
                          replacement of rock within temporary drainage channels, and flocculants for settling sediment
                          basins;
                     7.   Following each day’s construction works, ensure that any material on road surfaces is swept from
                          the road, and not permitted to be washed down the gutters and piped drainage systems;
                     8.   Quality of pooled water within sediment basins are to be monitored prior to dewatering, sufficient
                          time should be given to allow sediment to settle (possible with the assistance of a suitable flocculent
                          if necessary) &/or filtering during pumping operations; and
                     9.   Final establishment of bioretention basin should not occur until full stabilisation of upstream
                          catchment has occurred; preferably these should be temporarily turfed during the maintenance
                          period while dwelling construction is occurring.

                 It shall be the responsibility of the developer, through their principal contractor, to ensure that temporary
                 sediment and erosion controls are installed and maintained correctly.




                 23-0167SMP01-V4 | Stormwater Management Plan | 33 Pavilion Street, Pomona                              Page 35

Document Set ID: 24092538
Version: 1, Version Date: 02/09/2025