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. 2023 Mar 4;335:117564. doi: 10.1016/j.jenvman.2023.117564

Table 5.

Evaluation of the selectivity index (SI).

RESULTS SI Range INTERPRETATION
Low 1 to 2.5 The PPP model is not recommended for the W&S project.
Medium 2.5 to 3.5 The PPP model is not recommended for the W&S project in the situation observed. However, it is suggested to analyse the feasibility of applying the mitigation measures identified during the analysis and reconsider the results of the SI.
High 3.5 to 5 The PPP model is recommended for the W&S project. It is suggested to apply the mitigation measures identified during the analysis.