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?A- CTL I THOMPSON <br />• <br />-10 <br />FALLING HEAD FIELD TEST FOR PERMEABILITY <br />Project No.: FC04797-145 <br />Project Name: Goose Haven <br />Test Location: TH-42 <br />Date: 10/14/2009 <br />Borehole Diameter (Db) = <br />Pipe Diameter (DP) = <br />Borehole Depth (HT) = <br />Initial Water Measurement(hro) = <br />Final Water Measurement (hn) = <br />H= <br />Total Time of Test (t) _ <br /> <br />3.50 in E> <br />2 in <br />7ft <br />0.25 ft <br />H <br />T <br />1.45 ft 17 <br />6.2 ft <br />60 min <br /> <br /> H <br /> <br /> <br /> <br /> ? +--Db <br />(NTS) <br />Assumptions Calulations <br />Gravel Void Ratio (e) = 0.8 Porosi : <br />Dimensional Constant (CP) = 22,000 e <br /> n= <br />l+e <br /> Volume of Water Lost: <br /> VOT V,,,, +V,,., <br /> <br />)D,2 <br />)DZ ? 2 <br /> VO = [ <br />+ 4 - 4 ),]1 *(hf -h,o) <br /> <br /> Permeability: <br /> k- C*Q=C *KT11 <br />n <br />° <br /> h <br />H <br />Answers <br />Porosity (n) = 0.44 <br />Total Change in VolumeVOT = 86,7 in' <br />Permeability (k) = 22.2 ft/yr <br />Permeability (k) = 0.061 ft'/day/ft2 <br />- <br />Permeability (k) = 1E-05 cm/sec <br />F2 <br />• <br />McLAUGHLIN WATER ENGINEERS, LTD <br />GOOSE HAVEN RESERVOIR COMPLEX EXPANSION <br />CTLiT PROJECT NO. FC04797-145 <br />FIGURE D-1