07/1413 - Response to Information Request [As Published] · 132007.1413

1.0 Introduction:

Domestic Wastewater Design in accordance with AS/NZS 1547-2000 ( Domestic Wastewater Management ) and the
Code of Practice for On-Site Sewerage Facilities (DNR), was commissioned to undertake a Site and Soil Evaluation in
the Noosa Shire at 430 Black Mountain Road, Cooroy.

The results form the basis of our recommendations for on site wastewater disposal.

NOTE: This evaluation was undertaken at the owners request after considerable discussion regarding environmental
issues of this site and preferred design of the Land Application Area.

Our original site investigation and field work was performed on Friday 15th June 2007 after a period of dry weather.
The investigation was undertaken to determine the soil profile and Long Term Acceptance Rate (LTAR) of the
site in order to accommodate a proposed new 4 bedroom dwelling plus 3 x 2 bedroom holiday cottages. There is
an existing 3 bedroom dwelling located on this property which is to be demolished and the new 4 bedroom

dwelling built in the same location. The septic system currently servicing the existing dwelling is to be de-
commissioned.

2.0 Site Description:

The site is an acreage allotment the area is 28.0Sha.

The proposed site for the Land Application Area are moderately sloping Area # 1, 1% South. Area # 2, 2% South

The proposed Land Application Area site # 1 and Land Application Area # 2 both have good exposure to sun and wind.
Erosion, mass movement or land slip were not observed on this site. Rock outcrops are not evident on this site.

Vegetation on Proposed Land Application Area # 1 consists of a fenced area with existing fruit trees. Vegetation on
Proposed Land Application Area # 2 consists of 100% grass covered lawns.

There are 2 watercourses located on this site, ASNZS 1547:2000 setbacks are obtainable. There are no creeks within
the required set backs of ASNZS 1547:2000.

There are three dams located on this site, setbacks for Advanced Secondary under ASNZS 1547:2000 is obtainable. No
Bores were encountered during our evaluation.

Ground water was not encountered on this site during our investigation.
There is some evidence of fill in the proposed Land Application Area.
Flooding wil! not occur on this site. Rain water may transverse this site from adjoining properties during heavy rains.

Concentrated run-off from this property may transverse adjoining properties during heavy rains.

3.0 Soil Investigation:

3,1 METHOD:
Two bore holes were excavated using a hand auger to a depth of 900mm within the proposed Land Application Area
#1.

One bore hole was excavated using a hand auger to a depth of 900mm within the proposed Land Application Area
#2,

The soils were visual one textually classified in accordance with DNR and AS/NZS 1547:2000. The soils were
predominately grey/dark grey in colour. Moderately structured with the following texture assessment from table
4.1D1 AS/NZS 1547:2000.

Smooth plastic ball that can be rolled into a rod; slight resistance to shearing between
thumb and forefinger; forms a ribbon 50-75 mm long. Category 5S.

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