Changes

* Step 7: Multiply the depth of each separate component by the porosity and then sum the total to find the 1 dimensional storage (in mm).

* Step 7: Multiply the depth of each separate component by the porosity and then sum the total to find the 1 dimensional storage (in mm).

* Step 8: Calculate the required total storage (S_T, m³):

* Step 8: Calculate the required total storage (S_T, m³):

<math>S_{T}=RVC_T\times A_c\times 10</math>

<math>S_{T}=RVC_T\times A_i\times 10</math>

{{Plainlist|1=Where:

{{Plainlist|1=Where:

*''RVC_T'' is the runoff volume control target (mm),

*''RVC_T'' is the runoff volume control target (mm),

*''A_c'' is the catchment area (Ha), and

*''A_i'' is the impervious area within the catchment (Ha), and

* 10 is the units correction between m³ and mm.Ha.}}

* 10 is the units correction between m³ and mm.Ha.}}

* Step 9. Divide required storage (m³) by the 1 dimensional storage (in m) to find the required footprint area (''A_p'') for the bioretention in m².  

* Step 9. Divide required storage (m³) by the 1 dimensional storage (in m) to find the required footprint area (''A_p'') for the bioretention in m².