Changes

*48 = Maximum permissible drainage time for ponded water (hrs)

*48 = Maximum permissible drainage time for ponded water (hrs)

*Note that in designs without underdrains, conceptually the drainage of ponded water is limited by exfiltration at the base of the practice.}}

*Note that in designs without underdrains, conceptually the drainage of ponded water is limited by exfiltration at the base of the practice.}}

* Step 5: Sum total depth of bioretention components, and compare to available depth between the surface grade and the seasonally high water table or top of bedrock elevations. Adjust component depths to maintain a separation of at least 0.6 metres between base of the practice and seasonally high water table or top of bedrock elevation.

* Step 5: Sum total depth of bioretention components, and compare to available depth between the surface grade and the seasonally high water table or top of bedrock elevations.  

* Step 6: Adjust component depths to maintain a separation of at least 0.6 metres between base of the practice and seasonally high water table or top of bedrock elevation.

==Calculate the remaining dimensions==

==Calculate the remaining dimensions==