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Table 2 data <br />Hazen Method (Fetter 1994) Applicable to well sorted sands. Developed for slow sand filtration. <br />Applicable to sands with 0.1mm < D10 < 3.Omm and uniformity cofficient < 5 <br />Prugh graphical method (Powers 2007) Applicable to dense and medium <br />dense <br />soils with 1 <br />< Uniformity < 10 and D50 < 4mm <br />Beyer (Kresic 2006) Applicable to <br />poorly sorted sands with 1 < Uniformity Coeff < 20 <br />and 0.06mm < D10 < 0.6mm <br />D10 <br />D50 <br />D60 <br />Uniformity <br />Hazen <br />Beyer <br />Prugh (ft/day) <br />Average <br />(mm) <br />(mm) <br />(mm) <br />Coeff <br />ft/day <br />ft/day <br />50% <br />Dense <br />Average <br />THM -5 <br />9.5 -11 <br />0.16 <br />0.45 <br />0.59 <br />3.7 <br />73 <br />80 <br />107 <br />80 <br />94 <br />82 <br />19.5 -21 <br />0.41 <br />6.2 <br />12 <br />29 <br />477 <br />303 <br />390 <br />THM -15 <br />9.5 -11 <br />0.39 <br />1.8 <br />2.6 <br />6.7 <br />431 <br />417 <br />227 <br />254 <br />241 <br />363 <br />19.5 -21 <br />0.21 <br />0.7 <br />0.92 <br />4.4 <br />125 <br />133 <br />160 <br />114 <br />137 <br />132 <br />THM -16 <br />9.5 -11 <br />0.32 <br />3.3 <br />6.8 <br />21 <br />290 <br />206 <br />248 <br />19.5 -21 <br />0.38 <br />2 <br />2.8 <br />7.4 <br />409 <br />387 <br />214 <br />140 <br />177 <br />325 <br />Bulk Sample <br />0.43 <br />2.8 <br />4.9 <br />11.4 <br />524 <br />444 <br />484 <br />CR -6 <br />30 -31 <br />0.22 <br />1.1 <br />1.7 <br />7.7 <br />137 <br />128 <br />CR -8 <br />20 -21 <br />0.32 <br />1.2 <br />1.8 <br />5.6 <br />290 <br />292 <br />CR -9 <br />25 -26 <br />0.23 <br />0.72 <br />0.9 <br />3.9 <br />150 <br />163 <br />TP -1 <br />15 -17 <br />0.1 <br />1.8 <br />3.9 <br />39.0 <br />TP -5 <br />19 -20 <br />0.3 <br />1.4 <br />2.4 <br />8.0 <br />255 <br />237 <br />Ave <br />287 <br />254 <br />