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GROUND <br /> ENGINEERING <br /> Project: Civil Resources I Jeffco Gravel Mine August 16, 2017 <br /> Job Number: 17-1137 <br /> Reported To: Civil Resources <br /> Sample Information <br /> Lab ID: 814 I Jeffco Gravel Mine B Type of Permeant: Tap Water <br /> Confining Pressure: 40.0 (psi) <br /> Sample Description: California Liner(Remolded) Date Test Started: August 8, 2017 <br /> Date Sa:;ipled: July 27, 2017 Date Test Completed: August 14, 2017 <br /> Total Back Pressure: 30(psi) Effective Consolidation Stress: 10.0(psi) <br /> aa, 0.76712 cm2 ao,,, 0.031416 cm2 <br /> MEASUREMENT OF HYDRAULIC CONDUCTIVITY USING A FLEXIBLE WALL PERMEAMETER <br /> ASTM D 5084-00 -METHOD C FALLING HEAD RISING TAILWATER <br /> Sample Information: <br /> Pre-Test Post-Test <br /> Sample Mass (g) 198.7 209.9 <br /> Sample Diameter(in) 1.940 1.961 <br /> Sample Length (in) 1.960 1.990 <br /> Area(in2) 2.956 3.020 <br /> Specific Gravity(assumed) 2.66 2.66 <br /> Volume of Solids(ft3) 0.00246 0.00238 <br /> Volume of Water(ft3) 0.00049 0.00108 <br /> Volume of Air(ft3) 0.00040 0.00001 <br /> Total Volume(ft3) 0.00335 0.00348 <br /> Void Ratio 0.36 0.46 <br /> Porosity (%) 27 31 <br /> Degree of Saturation (%) 55 99 <br /> Pressure Difference(psi) 0.0 0.0 <br /> Wet Mass of Sample + Dish (g) 765.40 421.70 <br /> Dry Mass of Sample+ Dish(g) 725.30 391.00 <br /> Mass of Dish (g) 195.70 211.80 <br /> Moisture Content(%) 7.6 17.1 <br /> Wet Density(pcf) 130.7 133.0 <br /> Dry Density(pcf) 121.5 113.6 <br /> Permeability Test Trials <br /> Time Cap Pedestal Elev. Total Head Permeability <br /> min Elev. cj, Elev. (cm) Iliad (cm) Jcm) Temp (cm/sec) <br /> 0 0.40 23.00 23 23 20 <br /> 240 2.50 21.00 19 19 Correction Factor 5.7E-07 <br /> 0 2.90 20.60 18 18 1.000 <br /> 180 4.30 19.20 15 15 6.6F-07 <br /> 0 0.50 22.80 22 22 <br /> 180 2.90 20.60 18 18 8.8E-07 <br /> 0 3.50 20.00 17 17 <br /> 180 5.50 17.80 12 12 1.1E-06 <br /> Average 8.06E-07 1 <br /> Temp Correction 8.06E-07 <br /> www.groundeng.com <br /> Englewood,Commerce City, Loveland, Granby, Gypsum <br />