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Hitch Rack Ranch Quarry Waste Stockpile Stability Analyses/591-6 <br /> March 13,2018 <br /> NORWEST Page 4 <br /> C 0 R P 0 R A T 1 0 N <br /> Table 4.1 <br /> Soil Properties <br /> -A 7 <br /> Damp,loose to medium Natural Resource <br /> Geotechnical Soil Description compacted clayey Silt with Conservation Service— <br /> sand and gravel,with sub- National Cooperative Soil <br /> angular particles.(ML-CL) Survey(NRCS 2016) <br /> Natural Resource <br /> Particle Size Distribution (Sand—Silt—Clay) Conservation Service— <br /> Overburden 35-34-31 National Cooperative Soil <br /> Survey(NRCS 2016) <br /> Natural Resource <br /> Density 1.33 g/cc(13.1 kN/M3) Conservation Service— <br /> National Cooperative Soil <br /> Survey(NRCS 2016) <br /> Shear Strength 27 degrees,0 cohesion Obrzud R.&Truty,(2012) <br /> Natural Resource <br /> Geotechnical Soil Description Damp,loose organic silty sand Conservation Service— <br /> with gravel(OL) National Cooperative Soil <br /> Survey(NRCS 2016) <br /> Natural Resource <br /> Particle Size Distribution (Sand—Silt—Clay) Conservation Service— <br /> Topsoil Stockpile 70-15-15 National Cooperative Soil <br /> Survey(NRCS 2016) <br /> Natural Resource <br /> Density 1.3 g/cc(12.8 kN/M3) Conservation Service— <br /> National Cooperative Soil <br /> Survey(NRCS 2016) <br /> Shear Strength 22 degrees,0 cohesion Swiss Standard(1999) <br /> Geotechnical Soil Description Loose to medium compact Previous project experience <br /> silty gravel with trace of sand and engineering judgment <br /> Particle Size Distribution (Sand—Silt—Clay) Previous project experience <br /> Fine Reject 80-10-10 and engineering judgment <br /> Density 1.4 g/cc(13.7 kN/M3) Previous project experience <br /> and engineering judgment <br /> Shear Strength 30 degrees,0 cohesion Swiss Standard(1999) <br /> Geotechnical Soil Description Compacted,well graded sand Previous project experience <br /> and gravel with little fines and engineering judgment <br /> Compacted Engineered Particle Size Distribution 90-10-0 Previous project experience <br /> and engineering judgment <br /> Sand and Gravel <br /> Density 1.8 g/cc(18 kN/M3) Previous project experience <br /> and engineering judgment <br /> Shear Strength 37 degrees,0 cohesion Swiss Standard(1999) <br />