Changes

Note that narrow, linear bioretention features drain faster than round or blocky footprint geometries.  

Note that narrow, linear bioretention features drain faster than round or blocky footprint geometries.  

*Begin the drainage time calculation by dividing the area of the practice (''A_p'') by the perimeter (''P'').

*Begin the drainage time calculation by dividing the area of the practice (''A_p'') by the perimeter (''P'').

*To estimate the time (''t'') to fully drain the facility:  

*Use the following equation to estimate the time (''t'') to fully drain the facility:  

:<math>t=\frac{V_{R}A_{p}}{f'P}ln\left [ \frac{\left (d_{T}+ \frac{A_{p}}{P} \right )}{\left(\frac{A_{p}}{P}\right)}\right]</math>

:<math>t=\frac{V_{R}A_{p}}{f'P}ln\left [ \frac{\left (d_{T}+ \frac{A_{p}}{P} \right )}{\left(\frac{A_{p}}{P}\right)}\right]</math>

{{Plainlist|1=Where:

{{Plainlist|1=Where: