Attachment 5 - Site Assessment and Soil Test for effluent disposal

LOT 21 (No.16) PINES ROAD, COOROY                          EBIS REFERENCE NO: 210417-ED



 SITE ASSESSMENT AND SOIL TESTING FOR ONSITE EFFLUENT DISPOSAL


1.0    INTRODUCTION
1.1    General Information

We were commissioned to undertake site assessment and soil testing for an on-site
effluent disposal system at 16 Pines Road, Cooroy.
Testing and assessment was undertaken on 21 January, 2022.

Information on the site conditions was collected and the suitability of the site for
effluent disposal was assessed.


2.0     TESTING
2.1     Test Method

Two (2) boreholes of 75mm diameter were excavated at the location shown on the
attached site sketch. Soils were texturally classified to assess their permeability in
accordance with AS/NZS 1547:2012.

2.2     Standards

The On-site Domestic Wastewater Management standard AS/NZS 1547:2012 and The
On-site Sewerage Code July 2002 produced by the Department of Natural Resources
and Mines have been used as the main references for assessing the suitability of this
site for the disposal of wastewater.


3.0     FINDINGS
3.1     Proposed Development

It is proposed that a new four (4) bedroom home be built on the above allotment.

3.2     Area

The allotment has an overall area of approximately 3.874ha. The proposed site layout is
shown on the attached site plan A3-210417-ED1.

3.3     Slope

The site slope over the area tested is as indicated on the attached site plan. It is
proposed that advanced secondary effluent from a house hold treatment plant will be
discharged to a covered surface pressure drip irrigation area.

3.4     Geology & Soils

The geology of the site is shown as being RLK – Kin Kin beds.
The soils are shown as being GRYP – Gravelly red and yellow podzolics.
The natural soil profile consists of high plasticity friable silty clay topsoil and high
plasticity silty clay with shaley gravels increasing with depth.

3.5     Weather

The weather on the day of testing was mostly fine with some showers. It was generally
fine with some showers and a storm during the preceding week.


PROPOSED NEW RESIDENCE               PAGE 1 OF 4                          7 February 2022