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→Select a surface ponding depth to begin sizing with
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Note that conceptually, in designs without underdrains, when filled to their maximum storage capacity, drainage of ponded water is limited by the infiltration rate at the base of the practice.<br>
Note that conceptually, in designs without underdrains, when filled to their maximum storage capacity, drainage of ponded water is limited by the infiltration rate at the base of the practice.<br>
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−For practices with underdrains see recommended maximum surface ponding depth for each filter media blend in the table above.<br>
+For practices with underdrains see recommended range for maximum surface ponding depth in the table above, and consult local design standards where available.<br>
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* Step 3: Select a design surface ponding depth, d<sub>p</sub>' (m) to begin sizing with:<br>
* Step 3: Select a design surface ponding depth, d<sub>p</sub>' (m) to begin sizing with:<br>