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Percolation test

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[[File:Perc_test.png|thumb|Schematic of percolation test setup]]
A percolation test is one way of determining a [[design infiltration rate]]. If a site disturbance must be minimized, this test can be performed in a small augered well. Adding a [[permeameter]] may speed up analysis.  
Percolation test results cannot be translated into field saturated hydraulic conductivity (''K<sub>fs</sub>'') by simple manuipulation of the units. However, an acceptable approximation can be made by accounting for the soil texture and by making measurements under non-saturated conditions<ref name = '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>.

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