Author(s)

M. Giavazzi & F. Tatàno

Abstract

Within the increasing attention to absolute risk analysis at Italian level, as a University research study, the definable \“ARA-CoSSSLs” approach for human health (\“Absolute Risk Analysis for Contaminated Sites”, on \“Soil Screening Levels” basis) has been derived (as an initial, simplified version) and directly implemented on a series of interactive computer worksheets. The basic conditions of the \“ARA-CoSSSLs” approach derivation are: 1) the predominant reference to a fundamental international scientific protocol, also considering its temporal evolution (the US.EPA \“SSLs”); 2) a modular, open, common for users, and easily extensible computer calculation. This paper reports on the basic aspects and the specific calculation structure of the \“ARA-CoSSSLs” approach; additionally, a simplified case-study application is summarised. Keywords: absolute risk assessment, case-study, contaminated sites, exposure pathways and scenarios, model implementation. 1 Introduction Within the integrated management for contaminated site identification, characterisation and final remediation [1], an indispensable step deals with the application of reliable and scientifically based absolute risk analysis criteria [2], in order to: 1) evaluate the contamination level of environmental media at a given suspected site, as quantification of the associated risks for human and/or ecological targets; 2) eventually, define risk-based residual chemical concentrations, if a remedial action is required at the given site. As far as the

Keywords

absolute risk assessment, case-study, contaminated sites, exposure pathways and scenarios, model implementation.