Attachment 3 - Stormwater Management Plan 1856-SBSMP-01 v5 (December 2019) · RAL18/0023

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Sediment control

STABILISED ENTRY/EXIT POINT (RUMBLE PAD)

  

¢ — Manage entry/exit point (rumble pad) so that sediment is not tracked laos
off the site. ;

¢ Restrict site access to one stabilised location.

* Recommended construction method for stabilising access points
is a 150-200 mm deep pad of minimum 40 mm crushed rock.

¢ — The pad should be at least 2 metres wide and extend from the kerb
to the building slab.

¢ Where the entry/exit pad slopes towards the road, a 200 mm high bund (hump) should be installed across the
pad to deflect stormwater run-off to the side where it can be filtered by a sediment fence.

Stabilised gravel entry/exit point (rumble pad)

Note: The location of the permanent driveway may not be an appropriate location for the construction entrance.
SEDIMENT BARRIERS/FENCES

¢ Install sediment barriers along the lower
side of the soil disturbance.

¢ The most efficient sediment barrier for
building sites is specially-manufactured
geotextile sediment fencing.

* — Sediment fences on building sites
are usually wire-tied to steel or hardwood
posts (wire-tied sediment fences have the
advantage of being more readily unhooked
from their support posts).

* The support posts are spaced no greater
than 2 metres apart and the sediment
fence buried to a depth of 200 mm.

 

¢ — For public safety and sediment control Sediment fence

efficiency, sediment barriers should not be
located outside property boundaries without Council approval.

* — Sediment barriers should only be placed on the road as a last resort.

* — Sediment barriers placed in front of roadside stormwater inlets are rarely as effective as onsite controls and
at best usually result in the sediment being washed down the street and into the nearest open gully inlet.

* — Only use proper geotextile sediment fence fabric. Don’t use filter cloth or shade cloth.

USE OF SIGNS im an Fhe
Public signs that warn of the need for proper sediment control devices and c : _
maintenance are becoming more widely used. Contact your council for further . AL,

information.

 

Sediment control information signage