Site Soil Evaluation (SSE) – AS/NZS 1547
A Site Soil Evaluation (SSE) is required to assess soil suitability for onsite wastewater, septic and effluent disposal systems. Our reports are prepared in accordance with AS/NZS 1547:2012 and meet the requirements of Local Government, the Department of Health and Planning Authorities across Western Australia.
Free INSTANT Estimation
For Soil Evaluation Report (SSE)
Get a FREE Estimation Instantly
Call Us Today: 0485 839 002
What Is a Site Soil Evaluation?
A Site Soil Evaluation assesses the physical and chemical characteristics of soil to determine its suitability for onsite wastewater and effluent disposal systems, including septic systems.
This assessment is typically required as part of:
- Development Applications (DA)
- Building Permit approvals
- Septic system installations
- Effluent disposal system approvals
The assessment is carried out in accordance with AS/NZS 1547:2012 – On-site Domestic Wastewater Management, published by Standards Australia
➡️ https://www.standards.org.au
Additional guidance for effluent disposal systems in Western Australia is provided by the WA Department of Health
➡️ https://www.health.wa.gov.au
Our Site Soil Evaluation Scope of Work
Each Site Soil Evaluation Report includes the following:
Desktop Study
Review of the surrounding environment and site constraints
Identification of sensitive environmental features
Review of available geology and groundwater information using public datasets, including Geoscience Australia
➡️ https://www.ga.gov.au
Field Investigation
Mobilisation and demobilisation of one engineer and equipment
Preparation and implementation of a Job Safety and Environmental Analysis (JSEA)
Preparation of a site plan showing:
Land Application Area (LAA)
Borehole locations
Field permeability test locations
Excavation of three (3) boreholes within the LAA to:
2.0 metres depth, or
Refusal (whichever occurs first)
Boreholes logged in accordance with AS 1726 – Geotechnical Site Investigations
➡️ https://www.standards.org.au
Soil Sampling & Laboratory Testing
Soil sampling is undertaken on the assumption that site materials are relatively homogeneous.
Laboratory testing is undertaken in accordance with Department of Health requirements, including:
- Particle Size Distribution (PSD)
- Soil chemical and environmental testing:
- pH (1:5)
- Electrical Conductivity (EC 1:5)
- Sodicity (Exchangeable Sodium Percentage – ESP)
- Phosphorus Retention Index (PRI)
Laboratory methods align with recognized Australian testing standards and National Association of Testing Authorities (NATA) accredited procedures
Soil Classification & Interpretation
Soil texture classification
Soil structure and colour
Soil permeability rate
Interpretation of subsurface conditions across the site
Groundwater assessment (where encountered)
All classifications and interpretations are completed in accordance with AS/NZS 1547:2012.
Deliverables
Your Site Soil Evaluation Report will include:
- Factual SSE report in accordance with AS/NZS 1547
- Detailed soil profile logs
- Borehole logs
- Field permeability test results
- Laboratory test results
- Interpretation of soil and groundwater conditions
Reports are prepared to satisfy Local Government, Department of Health, and planning authority submission requirements across Western Australia.
Request a Site Soil Evaluation Report
If you require a Site Soil Evaluation Report for septic or effluent disposal approval, contact Engineering On Demand today.
We service Perth Metro and regional Western Australia, subject to availability.
