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® ADVANCED EARTH SCIENCESMUOTHILL SANITARY LANDFILL <br />MULTI -INTERFACE DIRECT SHEAR TESTING (ASTM D 6243) <br />Upper Shear Box: Foundation soil compacted to approximately 90% of max dry density at OMC + 41/o ( yd�X = 98.5 pcf, OMC = 23.0%) against <br />Bentoliner NWL45 GCL (Lot 25051211, Roll #502252263, peel = 47.5 lbs) with non heat -burnished side down against <br />GSE 60 -mil B/B textured HDPE geomembrane (#108181768) <br />Lower Shear Box: LCRS Gravel <br />9000 <br />7500 <br />6000 <br />a <br />N 4500 <br />L <br />d <br />s <br />3000 <br />1500 <br />0 -�- <br />0.0 <br />4F <br />0.8 1.6 2.4 <br />Displacement (in.) <br />3.2 <br />1.wvv <br />12000 <br />6000 <br />m <br />3000 <br />0+ <br />0 <br />Shear Strength 6 a Rz <br />Parameters (3) (deg) (psf) <br />Peak <br />LD <br />O Peak ❑ LD <br />L <br />7 <br />3000 6000 9000 12000 15000 <br />Normal stress (psf) <br />Test Shear Normal Shear GCL Soaking in Water Consolidation in Water Lower Soil Foundation Soil GCL Shear Stren�Ih Failure <br />No. Box Size Stress Rate Stress Time Stress Time yd coi aTf 7d coi cof coi wf TP Mode <br />in. x in. s in./min s hour s our <br />4F 1 12 x 12 1 12000 1 0.04 1 125 1 20 1 1200016 <br />NOTES: <br />(1) Sliding initially occurred at the interface between the non heat- treated side of GCL and geomembrane, and GCL failed internally. <br />DATE OF REPORT: 6/26/2015 <br />FIGURE NO. B -4b <br />PROJECT NO. SGI14012 <br />DOCUMENT NO. <br />PTT,F N <br />