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CTL I THOMPSON <br />0 <br /> <br />FALLING HEAD FIELD TEST FOR PERMEABILITY <br />Project No.: FC04797-145 <br />Project Name: Goose Haven ?p <br />Test Location: TH-46 p <br />Date: 10/14/2009 ?- <br />Borehole Diameter (Db) = <br />Pipe Diameter (DP) = <br />Borehole Depth (HT) = <br />Initial Water Measurement(hto) = <br />Final Water Measurement (htf) = <br />H= <br />Total Time of Test (t) _ <br />3.50 in <br />2 in <br />8ft <br />0.95 ft <br />HT <br />1.23 ft 6.9 ft <br />60 min <br />H <br /> <br /> <br /> <br />? 0-Db (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 /> ? V gravel <br />Y pipe + v gravel <br /> Z ? Z Z <br />? <br /> VoT = + - <br />4 n *(hf -hto) <br /> <br /> Conductivity: <br /> k=C *Q_C *VOTIt <br />° <br />° <br /> H <br />h <br />Answers <br />Porosity (n) = 0.44 <br />Total Change in VolumeVOT = 20.2 in' <br />Conductivity (k) = 4.6 ft/yr <br />Permeability (k) = 0.013 ft'/day/ft' <br />Conductivity (k) = 4.5E-06 cm/sec <br /> <br />MCLALIGHLIN WATER ENGINEERS, LTD <br />GOOSE HAVEN RESERVOIR COMPLEX EXPANSION <br />CTLiT PROJECT NO. FC04797-145 <br />FIGURE D-3