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The numerical model Sand Model was developed and used to replicate the laboratory sand tank model. The plots of the TBCs for the twelve (12) multilevel observation points within the model domain show a reasonable match of the simulated and observed tracer breakthrough curves. The calculated t value (Paired-t test statistic) for each well is less than the critical value of t ( t critical = 2.16 for df=13), and the calculated P value for each well is greater than the chosen significance leveldoi:10.4314/afrrev.v3i5.51170 fatcat:yajtemwflrh5hex3pdr4seukmq