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→Determine the required surface area of the storage reservoir
*d<sub>i</sub>' = Design infiltration water storage depth (m)
*d<sub>i</sub>' = Design infiltration water storage depth (m)
*n<sub>r</sub>' = Effective porosity of the storage reservoir fill material(s).<br>
*n<sub>r</sub>' = Effective porosity of the storage reservoir fill material(s).<br>
If the storage reservoir would need to be greater than 0.6 metres deep if filled with clear stone aggregate, consider installing a void-producing structure embedded in clear stone aggregate instead, which provides a greater effective porosity (n'), allows for a shallower storage reservoir depth, and saves aggregate.
==Calculate the total depth of the practice, d<sub>T</sub>==
==Calculate the total depth of the practice, d<sub>T</sub>==