Wastewater Report

1.0 Introduction:
Biowater Designs Pty Ltd, in accordance with AS/NZS1547-2012 ( Domestic Wastewater Management ) and the
Queensland Plumbing & Wastewater code (QPW) 2019 Version 1, was commissioned to undertake a Site & Soil
Evaluation in the Noosa Council at 411 Black Pinch Road, Cootharaba.

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

Original site investigation and field work was performed on Wednesday 23rd March 2022 after a period of wet 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 3 bedroom dwelling to be moved to the site.

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

2.0 Site Description:
2.1 Existing Buildings: None

2.2 Site Factors:

The site is an acreage allotment the area is approximately 111.066.68m2.

The proposed Land Application Area is moderately sloping (4-6%) to the North-West.

The proposed Land Application Area has very good exposure to sun and wind.

Erosion, mass movement or land slip was not observed on this site. Rock outcrops are not evident on this site.

Vegetation in the proposed Land Application Area currently consists of 100% grass cover.

There are no bores, dams, creeks or waterways on this site or adjoining properties within the required setbacks of the
proposed Advanced Enviro-Septic Bed.

Ground water was not encountered on this site during our investigation to a depth of 2000mm.

Flooding will not occur in the vicinity of the new dwelling and Land Application Area.

There is no evidence of fill in the proposed Land Application Area.

Rain water will transverse this site from adjoining properties during heavy rains.

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

Soils were moist and there is no evidence of soil surface cracking in the LAA. No evidence of compaction or seepage
areas. Salinity is not evident.



3.0 Soil Investigation:

3.1 Drainage Pattern: Linear Planar
3.2 Method:
Soil Testing for the site was conducted by Global Testing on 8th March 2019 to a depth of 2000mm.

The soils were visual one textually classified in accordance with Table E1 AS/NZS 1547:2012. The soils were
predominately pale brown in colour. Moderately - Strongly structured Sandy Clays. See bore logs enclosed.

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 5 adopted.
The Site Classification was also conducted by Global Testing and is classed as a “M” site. See page 10. Articulation joints
are therefore not required.


                                                                                     C Copyright Lance Picton 2022 design & content.   2/11