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1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 fIELD PERMEABILITY TEST PROJECT: Sa n Luis BOREHOLE NO.: BH - 2 JOB NO,: 14 702 DATE: 07/13/88 VARIABLE HEAD METHOD INITIAL HT. TO WATER: 69.90 feet PIPE DIAME TER: 3.18 cm NT. TO WATER ADDED FOR TEST; 0.00 feet PIPE AREA: 7.92 cm2 TOTAL DEPTH OF BOREHOLE: 95.00 feet BOREHOLE DIAMETER: 15.24 cm TOP OF PIPE TO GROUND : 3.00 feet BOREHOLE AREA: 182.41 cm2 TOTAL DEPTH OF PIEZOMETER: 94.50 feet SCREEN LEW GTH: 20.00 feet TOP OF SEAL: 42.00 feet BOTTOM OF SEAL: 49.00 feet Note: Bohan 7.7 feet of the s creen was si Lted in. PERMEABILITY Date Time Inc remen[ Totel Water Change in Inc rem. Lunn. Elapsed Elapsed Level xt, of Perm- Perm- Time Time Reading Water ability ability 00/00/00 (Hrs.) (Sec.) (Sec.) (Ft.) (Ft.) K K (cm/sec) (cm/sec) 07/13/88 9.00 0.00 07/13/88 9.02 60 60 1.85 1.85 2.3E-OS 2.3E-OS 07/13/88 9.03 60 120 2.70 0.85 1.1E-05 1.7E-OS 07/13/88 9.05 60 180 3.45 0.75 9.7E-06 1.5E-OS 07/13/88 9.07 60 240 4.20 0.75 9.8E•06 1.3E-OS 07/13/85 9.08 60 300 4.95 0.75 1,0E-OS 1.3E-0S 07/13/88 9.10 60 360 5.55 0.60 8.0E-0b 1.2E-OS 07/13/88 9.12 60 420 6.30 0.75 1.0E-OS 1,2E-OS 07/13/88 9.13 60 480 6.85 0.55 7.6E-06 1.1E-OS 07/13/88 9.15 60 540 7.45 0.60 8.3E-0b 1.1E-OS 07/13/88 9.17 60 600 8.20 0.75 1.0E-05 1.1E-OS 07/13/88 9.25 300 900 10.65 2.45 7.1E-06 9.bE-Ob 07/13/88 9.33 300 1,200 13.00 2.35 7.1E-06 8.9E-06 07/13/88 9.42 300 1,500 15.10 2.10 6.6E-06 8.5E-06 07/13/88 9.50 300 1,800 17.10 2.00 6.5E-06 8.1E-Ob 07/13/88 9.58 300 2,100 18.85 1.75 5.9E-06 7.8E-06 07/13/88 9.67 300 2,400 20.55 1.70 6.0E-0b 7.bE-Ob 07/13/88 9.75 300 2,700 22.10 1.55 5.6E-0b 7.4E-06 d2 In ~ zm~) H K -- In Note: Permeability calculations peformed using the following formula: h- p =Diameter, Intake, cm d =Diameter, St ardpipe L =Length, Intake { =Time, sec f{ Piezomet ric read Reference: taint erkorn, Hans F. atd Ferg, Hsai~Yang (1975). Foundation Engineering Nerdbook, Van Nos[ranad Reinhold Crnpany, New Tork, 32 p.