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LID SWM Planning and Design Guide β


Percolation test

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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 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>.
The required calculations have been written into an easy to use spreadsheet, formatted for printing:
{{Clickable button|[[Media:Perc test.xls|Download Percolation test spreadsheet(.xls)]]}}