Changes

The bioretention cell comprises 0.6 m filter media (K = 2.4 m/day), laid over 0.6 m clear, coarse reservoir gravel. The pipes are laid within the reservoir, 0.9 m below the surface.  

The bioretention cell comprises 0.6 m filter media (K = 2.4 m/day), laid over 0.6 m clear, coarse reservoir gravel. The pipes are laid within the reservoir, 0.9 m below the surface.  

The system is designed to fill entirely during the rainstorm event. i.e. Depth to water table = 0 m.:     

The system is designed to fill entirely during the rainstorm event. i.e. Depth to water table = 0 m.:     

<math>Drain\ spacing=\sqrt{\frac{4\times 2.4m/day\left(0.9m-0m\right)^{2}}{0.5m/day}}=6 m</math>

<math>Drain\ spacing=\sqrt{\frac{4\times 2.4\ m/day\left(0.9\ m-0\ m\right)^{2}}{0.5\ m/day}}=6\ m</math>

==Underdrains for non-exfiltrating practices==

==Underdrains for non-exfiltrating practices==