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, �, i <br /> 3.3 Hvdroloav <br /> Ground water seepages were encountered in EP-2, EP-3, EP-5, EP-6, <br /> EP-7, EP-9 and EP-11. Theee seepayee originated from two aourcee. <br /> The firet aource of seepage ie fron a perched ground water table. A � <br /> perched ground water table forne due to the infiltration of eurface <br /> water down through the permeable eedi�ente euch se the fill eoile <br /> and looser Vaehon ablation d.•ift until it beco�ee perched atop or <br /> within a relatively impermeable barrier such ae the denaer lodge�ent <br /> till . In some areas where the impermeable barrier is cloee to <br /> ground aurface, the perched water accumulatee and createa eaturated <br /> ground conditione or standing water. <br /> The aecond eource of ground water occurred in the underlying Vaehon <br /> advance outwash depoeita (Unit 1 ) . Thie material hae high <br /> peroeability and poroeity characterietice and ia often timea found <br /> to be water bearing. <br /> It ehould be noted that aurface and ground water conditiona may <br /> fluctuate due to variatione in rainfall or time of the year. <br /> 5 <br /> � <br />