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Fig. 3. Theoretical graph of block concentration as a function of block probabilities of exceeding the remediation cutoff S. It illustrates the meaning of the low-risk volume Vlr (blocks of soils with probabilities less than 
), the uncertain volume Vu (blocks of soils with probabilities greater than and less than ß), and the excavated volume Ve (blocks of soils with probabilities greater than ß). The excavated volume is composed of the cleanup volume Vc (blocks of soils with pollutant concentrations greater than S) and the stored volume Vs (blocks of soils with pollutant concentrations less than S).
