Engineering Code Assessment Report

3. Erosion and Sediment Control Methods

aCinitcine Solution
Minimise disturbance when excavating Retain as much grassed area as possible on the

site.

These areas not only improve the appearance
of the site they also filter much of the sediment
from stormwater run-off before it reaches the
drainage system.

 

Catch drains and perimeter banks

Allow for diversion of up slope stormwater
around the work site and other disturbed
surfaces.

 

Install a sediment barrier

Install sediment barriers down slope of the
building site to filter coarse sediment before it
can wash into gutters, drains and watercourses.
e Purpose designed geotextile sediment
fabric (i.e. not shadecloth) attached to posts
with the geotextile buried in an upstream

trench; or

e Place turf of a minimum 600mm width along
kerb line; or

e Straw bales, staked in a 100mm (min) deep
trench.

 

Single gravelled entry-exit

Restrict vehicle access to one entry-exit point.

e Gravelling the access point will allow all
weather access, will reduce the amount of
soil carried off the site by vehicles, and will
provide a permanent base for the driveway.

 

Early stormwater drainage connection

Connect a temporary or permanent downpipe/s
to the stormwater system before laying the roof
or slow and spread the flow from downpipe/s to
avoid localised erosion. Downpipe/s may be
temporarily removed during wall construction.
All stormwater must discharge in a manner that
does not cause soil erosion.

 

Concrete waste and washing

Waste concrete and household paint must not
be allowed to wash into the gutters or the street.

 

Sand and soil stockpiles

 

Stockpiles must be placed wholly on the
construction site and behind a sediment barrier.

 

 

 

$2.3

The Noosa Plan

Proposed Amendments August 2015