The introduction of the Environment Act 1995 and Part IIA of the Environmental Protection Act 1990 has resulted in a more risk-based assessment of 'harm' based upon the 'suitable for use' principle.

Following the statistical based qualitative assessment of risk
undertaken in accordance with the CLR 7 guidance, Knight
Environmental Limited can
offer a wide range of quantitative risk assessment packages. Our approach to the design of effective remedial solutions is to base them, wherever possible, upon the results of a suitable quantitative risk assessment (QRA).

At Knight Environmental Limited these are conducted in accordance with the requirements of Part IIA and include QRAs for:

'controlled waters' and

human health

Our 'controlled waters' quantitative risk assessments are based upon site-specific data where available and identify the likeliest sensitive receptor be it an actual or hypothetical groundwater abstraction well or a vulnerable surface water resource. We assess potential pathways and model likely impacts on the identified receptors. This results in an identification of the likely acceptable remediation options for each specific site.

Equally important is the potential impact of contamination upon the health of end-users or neighbouring site users. Thus we undertake human health risk assessments which determine and quantify the potential risk to human health and enable us to develop site-specific target levels for remediation.

Knight Environmental Limited are also in the process of developing generic soil screening values for a broad comparative approach to risk assessments.

Also see :-

Miscellaneous Risk Assessment