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GROUND <br /> ENGINEERING <br /> Project: Civil Resources I Jeffco Gravel Mine August 23, 2017 <br /> Job Number: 17-1137 <br /> Reported To: Civil Resources <br /> Sample Information <br /> lab ID: 813 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 3, 2017 <br /> Date Sampled: July 27, 2017 Date Test Completed: August 21, 2017 <br /> Total Back Pressure: 30 (psi) Effective Consolidation Stress: 10.0 (psi) <br /> u,,, 0.76712 cm2 awl 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) 198 208.9 <br /> Sample Diameter(in) 1.940 1.930 <br /> Sample Length (in) 1.942 2.000 <br /> Area (in2) 2.956 2.926 <br /> Specific Gravity (ass,, . d) 2.66 2.66 <br /> Volume of Solid' r,. ) 0.00241 0.00242 <br /> Volume of Water(ft') 0.00059 0.00096 <br /> Volume of Air(ft3) 0.00032 0.00001 <br /> Total Volume(ft3) 0.00332 0.00339 <br /> Void Ratio 0.38 0.40 <br /> Porosity(%i 27 29 <br /> Degree of Saturation (%) 65 99 <br /> Pressure Difference (psi) 0.0 0.0 <br /> Wet Mass of Sample A Dish (g) 556.30 435.70 <br /> Dry Mass of Sample + Dish (g) 526.40 408.50 <br /> Mass of Dish (g) 199.70 226.70 <br /> Moisture Content(%) 9.2 15.0 <br /> Wet Density(pcf) 131 A 136.0 <br /> Dry Density(pcf) 120.4 118.3 <br /> Permeability Test Trials <br /> Time Cap Pedestal Elev. Total Head Permeability <br /> (min) Elev. (cm) Elev. cm Head (cm) iclin Temp (cm/sec) <br /> 0 0.30 22.90 23 23 20 <br /> 90 1.20 22.00 21 21 Correction Factor 6.6E-07 <br /> 0 1.50 21.70 20 20 1.000 <br /> 90 2 40 20.80 18 18 7.4E-07 <br /> 0 1.10 23.10 22 22 <br /> 240 3.20 20.80 18 18 6.6E-07 <br /> 0 3.80 20.40 17 17 <br /> 180 5.40 18.70 13 13 8.8E-07 <br /> I Average 1.32E-07 <br /> Temp r .. .,lion 7.32E-07 <br /> www groundeng.com <br /> Englewood.Commerce City, Loveland,Granby, Gypsurn <br />