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Percolation test results are not readily translated into field saturated hydraulic conductivity (''K<sub>fs</sub>''). However, an acceptable approximation can be made by accounting for the soil texture and by making measurements under non-saturated conditions<ref>Reynolds, W.D., Galloway, K., and Radcliffe, D.E. (2015). "The relationship between perc time and field-saturated hydraulic conductivity for cylindrical test holes.", National Onsite Wastewater Recycling Association (NOWRA) 2015 Onsite Wastewater Mega-Conference, Virginia Beach, VA, USA, November 3-6, 2015</ref>.
Percolation test results are not readily translated into field saturated hydraulic conductivity (''K<sub>fs</sub>''). However, an acceptable approximation can be made by accounting for the soil texture and by making measurements under non-saturated conditions<ref=Reynolds>Reynolds, W.D., Galloway, K., and Radcliffe, D.E. (2015). "The relationship between perc time and field-saturated hydraulic conductivity for cylindrical test holes.", National Onsite Wastewater Recycling Association (NOWRA) 2015 Onsite Wastewater Mega-Conference, Virginia Beach, VA, USA, November 3-6, 2015</ref>.
The required calculations have been written into an easy to use spreadsheet, formatted for printing:
The required calculations have been written into an easy to use spreadsheet, formatted for printing:
Where:
Where:
''{{overline|H}}'' = Mean water depth during a test
''{{overline|H}}'' = Mean water depth during a test
''a'' = the radius of the test pit
''α*'' = the representative soil soprtive number, and
''{{overline|C}}'' = is a shape function.
Additional details may be found in the original paper</ref=Reynolds>.
==Measurement procedure==
==Measurement procedure==