Introductory RA

What is a contaminated site?

Who does what?

Why is it important?

What is risk management?

Risk assessment fundamentals

Risk assessment methods

Limitations of risk assessment

What are RA tiers?

Framework

Initiation 

Problem Identification

Receptor Characterisation

Exposure Assessment

Toxicity Assessment

Risk Characterisation

RM Decisions

XYZ Example

Resources

Glossary

FAQ's

This framework represents the risk assessment process. Each oval links to the risk assessment task indicated.  

Use this page to move quickly from one task to another, and to remind you of the overall sequence of events in conducting a risk assessment by following the link from the framework icon.

As previously described, risk assessment can be undertaken at three distinct levels or tiers. An assessor usually starts with a Tier 1 assessment and works through each tier until a risk management decision can be made.

Each page is laid out in a similar manner as follows, to assist you in following a logical sequence through the site.

• Introduction

• Description of tasks 

• Links to the XYZ example, the next RA stage, and Tier 2 tasks (advanced).

The framework is based on Australia's National Environment Protection (Assessment of Site Contamination) Measure (NEPM) 1999.