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KLEINEELDER <br /> File No. 24-2206-O1.A06 <br /> January 2, 1991 <br /> Y <br /> been classified according to the Unified Soil Classification <br /> System, described on Plate A-2 . <br /> LABORATORY TESTS <br /> Laboratory tests were performed on a variety of samples obtained <br /> from the ex-oloratory borings in order to evaluate permeability and <br /> gradation characteristics of the soils encountered. The tests <br /> consisted of Hvdrometar and Falling Head P2=meabil4ty. The results <br /> of our Hydrometer tests are noted on the Summary of Laboratory <br /> Tests, Platz A-13 . <br /> CONCLUSIONS AND RECOMMMMAMATIONS <br /> Phase I Area Sails for Clav Liner <br /> For this study our firm performed a total of 13 Falling Head <br /> Permeability tests on various samples, mostly in their in-situ. <br /> state. The tests were performed in accordance with The Corps of <br /> Engineering manual, Test ,SEM 110-2-1906, with an effective <br /> confining pressure of 4 pounds per sctuare inch. In addition, a <br /> total of 5 tests were performed for our earlier 1985 study. The <br /> results of our Falling Head Permeability tests are as follows: <br /> October 1990 <br /> Coefficient <br /> Boring Depth of Permeability <br /> Sample (ft) Description k, (cm/sec) Moisture % ncf <br /> B-1 20 Silty Clay 7. 4 x 10-5 79 37 <br /> B-1 3 Cemented <br /> Sandy Silt 2 . 8 x 10-4 87 21 <br /> B-2 5 Silty Clay 2 .8 X 10-4 58 40 <br /> B-2 30 Cemented <br /> Sandy Silt 1. 4 X 10-3 86 16 <br /> Copyright 1991 KLeinfeider, Inc. 4 <br />