Attachment F - Effluent disposal report

ON-SITE EFFLUENT DISPOSAL REPORT: Lot 1 & 2/305 Lake McDonald Drive,
Cooroy.

Introduction:

Australian Soil Investigations have been asked to perform a site evaluation of the above property to
establish a solution for the safe treatment and disposal of effluent on site.

For this we have conducted a Site and Soil Assessment for the purpose of determining the most suitable
means of on-site effluent disposal. On-site testing for this assessment was performed in accordance with
AS 1547-2000-"On-Site Domestic Wastewater Management and the Queensland Plumbing and
Wastewater Code. The field work for this assessment was undertaken, on the 14/5/2015.

The assessment has been based upon the proposed and existing plans provided by the client. Current
operations on-site include a packing facility for the produce together with site management and
maintenance operatives. Currently this sees a total of 25 persons employed on the site. This number is
expected to increase to 70 persons as production increases.

Design parameters will be based on these hydraulic demand requirements.
Site description:

The site is a rural property with a number of large capacity commercial greenhouse structures used for
primary food production (ie. Vine Tomato growing)

The allotment is located within the Noosa Shire Council.
Two creeks run along the eastern and western boundaries of the site. Approximately two thirds of the
site lies below the Quoo flood line. For this reason only a small area of land in the south east corner of the

site adjacent the existing driveway off Lake McDonald Drive is suited for the disposal of treated effluent.
The area is above the Quoo line and has a gentle slope in the order of 5%.

On-Site Assessment:
During our site evaluation consideration was given to the following:

Y the available area for the primary siting of absorption areas (Land Application Area) and
alternative sitings.

¥ the risk of prejudicing adjoining property and underground water supplies, by seepage or run off
from the site.

Y permeability, soil type and soil depth.

Y drainage, and envisaged seasonal changes in ground water level.

¥ general climate.

v slope and the effects of seepage and water run-off from surrounding higher ground.
On-Site Testing:

Three test holes were excavated in the positions shown in the attached site sketch. These holes were
100mm diameter x 600 mm deep for the purpose of site soil assessment in accordance with the AS 1547

AUSTRALIAN SOIL INVESTIGATIONS 2 ASI Ref: 150105(A)