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1 1 i 1 t 1 FIELD PERMEAe1LI7Y TE57 PROJELi: Sen Luis BOREHOLE NO.: JOB NO.: 14702 DATE: VARIABLE HEAD METHOD INITIAL HT. TO WATER: 23.30 feet HT. TO WATER ADDED FOR TEST; 0.00 feet TOTAL DEPTH OF BOREHOLE: 50.00 feet TOP OF PIPE TO GROUND; 3-60 feet TOTAL DEPTH OF PIEZOMETER: 47.60 feet TOP OF SEAL: 22.10 fee[ BH - 6 07/01/88 PIPE DIAMETER: 3-18 cm PIPE AREA: 7.92 cm2 BOREHOLE DIAMETER: 15.24 cm BOREHOLE AREA: 182.41 cm2 SCREEN LENGTH: 20.00 feet BOTTOM OF SEAL: 24.60 feet PERMEABILITY Dale Time Increment Tofal Water Charge in Increm. Corm. Elapsed Elapsed Level Ht. of Perm- Perm- Time Time Reading Yeter ability ability 00/00/00 (Hrs.) (Sec.) (Sec.) (Ft.) (Ft.) K K (cm/sec) (cm/sec) 07/01/88 9.25 0-00 07/01/88 9.27 60 60 20.50 20.50 2.1E-03 2.1E-03 07/01/88 9.28 60 120 21.40 0.90 3.9E-04 1.3E-03 07/01/88 9.30 60 ~ 180 21.70 0.30 7.7E-04 9.0E-04 07/01/88 9.32 60 240 21.80 0.10 6.5E-05 6.9E-04 07/01/88 9.33 60 300 21.85 0.05 3.4E-0S 5.6E-04 07/01/88 9.35 60 360 21.90 0.05 3.5E-OS 4.7E-04 07/01/88 9.37 60 420 21.95 0.05 3.7E-OS 4.1E-04 07/01/88 9.38 60 480 22.05 0.10 7.8E-OS 3.7E-04 07/D1/88 9.40 60 540 22.10 0.05 4.1E•OS 3.3E-04 07/01/88 9.42 60 600 22.15 0.05 4.3E-05 3.0E-04 07/01/88 9.43 60 660 22.20 0.05 4.5E-05 2.8E-04 07/01/88 9.45 60 720 22.25 0.05 4.7E-0S 2.6E-04 07/01/88 9.47 60 780 22.30 0.05 4.9E-05 2.5E-04 07/01/88 9.48 60 840 22.30 0.00 0.0E+00 2.3E-04 07/01/88 9.50 60 900 22.30 0.00 0.0E+00 2.1E-04 07/01/88 9.58 300 1,200 22.45 0.15 3.3E-05 1.7E-04 07/01/88 9.67 300 1,500 22.60 0.15 3.9E-05 1.4E-04 07/01/88 9.75 300 1,800 22.70 0.10 3.1E-OS 1.2E-04 d? ~~/2mL1 N ` / Note: Permeability calculations peformed using the following formula: KM- , ~~ o B'L~t ~ Nx 't i i p =Diameter, Intake, cm d =Diameter, S[andpi pe L =length, In take t = Time, sec f{ = Pietometri t read Reference: Yint erkorn, Mans i. and Fang, Nsai -Yang (1975). Fourdatian Erg i neerin9 Hordbook, Van Nostranad Reinhold Company, Mew York, 32 p.