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Line 9: − Determine the I/P ratio: − :<math>R=\frac{A_{c}}{A_{p}}</math> − {{Plainlist|1= Where: − *''R'' = Ratio of catchment area (''A<sub>c</sub>'') to BMP footprint area (A<sub>p</sub>) syn. I/P ratio. − *''A<sub>p</sub>'' = Area of the infiltration practice in m<sup>2</sup> − *''A<sub>c</sub>'' = Catchment area in m<sup>2</sup>}} Line 24:
Line 18: − + − ----+ − + − + + +
→Determine the effective infiltration coefficient
==Determine the effective infiltration coefficient==
==Determine the effective infiltration coefficient==
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Apply an appropriate [[safety correction factors| safety correction factor]] to the measured infiltration rate:
Apply an appropriate [[safety correction factors| safety correction factor]] to the measured infiltration rate:
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Determine if there is a constraint to the depth (d) of the bioretention practice:
Determine if there is a constraint to the depth (d) of the bioretention practice:
'''or'''if the land area is limited, determine the I/P ratio:
:<math>R=\frac{A_{c}}{A_{p}}</math>
{{Plainlist|1= Where:
*''R'' = Ratio of catchment area (''A<sub>c</sub>'') to BMP footprint area (A<sub>p</sub>) syn. I/P ratio.
*''A<sub>p</sub>'' = Area of the infiltration practice in m<sup>2</sup>
*''A<sub>c</sub>'' = Catchment area in m<sup>2</sup>}}