As a complementary contribution within the increased (legislative and applicative) attention to absolute risk analysis for contaminated sites at Italian level, exclusively as a University research study and exercise, the definable “ARA-CoSSSLs” absolute risk analysis approach for human health has been derived in its initial, simplified version, and directly implemented on a series of interactive computer worksheets. The basic conditions of the “ARA-CoSSSLs” approach derivation are: the predominant reference to a fundamental international scientific protocol, also considering its temporal evolution (the U.S.EPA “SSLs, Soil Screening Levels” procedure); a modular, open, and easily extensible computer calculation structure. After a brief description of fundamentals and calculation structure of the “ARACoSSSls” approach, this paper deals with the procedural elaborations for the “ARA-CoSSSLs” approach exercise application at a potentially contaminated sub-area of a relevant Italian industrial site.