Changes

*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.  

* 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.

* Step 6: Adjust component depths to maintain a separation of 1.0 metre between base of the practice and seasonally high water table or top of bedrock elevation, or a lesser or greater value based on native soil texture and groundwater conditions.

==Calculate the remaining dimensions==

==Calculate the remaining dimensions==