Site Based Stormwater Management Plan

The Noosa Plan

Proposed Amendments August 2015

 

 

 

 

 

 

 

 

 

 

 

Controlling Factors Points Seo Checking
e Clay loam 2
e Clay soil 2
Anticipated duration of site disturbance: (see 2 below)
e Duration < 2 weeks 0
e 2weeks # Duration < 3 months 2 +
e 3 months # Duration < 6 months 4
e Duration > 6 months 5
Month that works are undertaken: (see 3 below)
e August, September 0
e April, May, June, July, November, October 1 |
e March December 2
e January February 3
Offsite sediment control (i.e. down slope of the soil
disturbance):
e Score 1 point if there is no purpose built, operational 1
and well maintained sediment traps (eg. sediment Oo
basin, gross pollutant trap or purpose built wetland)
to catch sediment before it enters a water body with
environmental values (eg. creek, natural wetland,
tiver or bay) (see 4 below)
Run-off entering the site:
e Score 1 point if stormwater run off entering the site is 1 Oo
not diverted away from the soil disturbance
Extent of site disturbance:
e Score 2 points if building work requires reshaping of
the ground surface (eg. ‘cut and fill’ works) (see 5 2
below) Ss
e Score 5 points if the area to be disturbed is greater 5
than 600m?
Works within environmentally sensitive areas:
e Score 11 points if the disturbance is within the banks
of a watercourse (see 6 below) 11
e Score 5 points if the disturbance is within 50m of the
top of bank of a watercourse 5 OQ
e Score 2 points if the disturbance is between 50m
and 100m of the top of bank of a watercourse 2
TOTAL SCORE (See 7 & 8 below) \ 2

 

 

Notes:

1. Where there is more than one type of soil on the site, select the category with the highest point value.

2. The time, from when the building site will first become vulnerable to erosion, to the time the soil will
be fully stabilised (eg. grassing).

3. If this time span covers more than one category, select the category with the highest point value.
Note that if there is no grass/vegetation cover on the site before building work has started, the time
span starts from the time this form is completed.

4. If you are not sure, score 1 point.

5. For the purpose of this form, ‘cut and fill’ works are those that will result in a steep batter or retaining
wall above and/or below the building slab, greater than 1 metre in height. If the building slab has
already been fully cut and stabilised (eg. grassed) during the subdivision stage, score 0 points.

6. Watercourse means any clearly identifiable creek, stream or river, whether flowing permanently or
intermittently.

7. Fora high risk site, the total score is > 14 points.

8. Fora low risk site, the total score is < 14 points.

$2.2