Development Application Part 2 - Environmental & Stormwater Management Plans · OPW11/0335

4




    SEDIMENT CONTROL
                                                                         on your building site


    A combination of sediment control measures is often needed on an individual site. Sediment controls
    usually consist of a sediment barrier installed along the lower side of the soil disturbance, and a stabilised
    entry/exit pad (rumble pad).




    Where possible, manage the entry/exit point of the site so that sediment is not tracked off the site.
    Where practical, restrict the entry/exit point to one stabilised location, not necessarily at the location
    of the permanent driveway (refer Figure 4.1).


     Stabilised Entry/Exit Pad - Building Sites                                                                            Building Site

     Entry/exit pod extends                                                        .•° °:: "'"'




                                                                                                                                                                       I
                                                                                   in:;arp,rate d mto the pad
     from kerb to budding slob
                                                                                   when        .• ^t . rxrt pod .4
     where practical                                                                                                                                           I'a
                                    yM,,,                                          to a      ' ):•.. CPO of the.
                                               !r !xjrh )Om (,
                                                                 nrn     /.        SC, 1         ,
                                    2OOmn, (m n);                  )                                                                Runoff
                                                                              ..                                                    diversion
                                                r
                 I'f    ;4r, Iran.                                                                                                  bank
                                                    Width 20m (mm)

                                                                                                                             5rdimentfence
    Runoff from pa d                                                                                                                                                              A

    directed to
                                                                                                                               Footpath
    sediment trop                                                                                                     N                          A ,' " , ° n ^ ,    pedestrian
         Geote.otile filter cloth    40-7f)mm          .AOke safe                                                                                                    tr fflc
         (as directed or when        crushed rock      for pedestrior:
         working on clayey soils)                      nwff c                                       Figure 4 1                Figure 4.2        nr/    Road f
                                                                                                                                                      7

    Stabilised entry/exit detail                                                                                          Entry/exit bond detail

    A rumble pad may be used to stabilise the entry/exit point. These pads should be at least 2 metres wide
    consisting of minimum 40 mm crushed rock placed 150-200 mm thick over geotextile filter cloth. Where
    possible, the rumble pad should extend from the kerb to the building slab or a minimum length of 10m.
    Where practical, the rumble pad should extend from the kerb to the building slab. Where necessary, 20 mm
                                                                                                                     aggregate or blue metal should be placed
                                                                                                                     over the crushed rock between the
                                                                                                                     property boundary and the road kerb to
                                                                                                                     make the entry/exit point (rumble pad)
                                                                                                                     safe for pedestrian traffic.


                                                                                                                     Where the entry/exit point (rumble pad)
                                                                                                                     slopes toward the road, install a minimum
                                                                                                                     200mm high flow diversion bund across
                                                                                                                     the pad to deflect stormwater run-off into
                                                                                                                     the main sediment control zone or into
                                                                                                                     a separate U-shaped sediment fence.
                                                                                                                     (refer Fiqure 4.2).
    Stabilised entry/exit point (rumble pad)