1,559
edits
Changes
Jump to navigation
Jump to search
no edit summary
Line 25:
Line 25:
===Designing with constraints===
{{textbox|Infiltration can still be optimized over 'tight' soils with infiltration rates ≤ 15 mm/hr:
*See [[Underdrains| underdrains]] for [[Bioretention| bioretention]] and [[Trees| tree pits, trenches and soil cells]], and
*Results from STEP studies of infiltration practices on [[low permeability soils]]
}}
{{textbox|Where infiltration is impossible, LID design alternatives exist which can still capture and retain stormwater:
*[[Stormwater planters]]
*[[Rainwater harvesting]]
*[[Green roofs]]
*[[Blue roofs]]
#where prohibitions and/or restrictions exist per approved Drinking Water Source Protection Plans (e.g. should not be used to treat pavement runoff within 2 year time of travel wellhead protection areas; see MOECC guidance).
#where prohibitions and/or restrictions exist per approved Drinking Water Source Protection Plans (e.g. should not be used to treat pavement runoff within 2 year time of travel wellhead protection areas; see MOECC guidance).
<br>
<br>
===Designing within constraints===
{{textbox|Infiltration can still be optimized over 'tight' soils with infiltration rates ≤ 15 mm/hr:
*See [[Underdrains| underdrains]] for [[Bioretention| bioretention]] and [[Trees| tree pits, trenches and soil cells]], and
*Results from STEP studies of infiltration practices on [[low permeability soils]]
Infiltration facilities should be designed with modifications where:
Infiltration facilities should be designed with modifications where:
#the underlying bedrock is within 1 m below the bottom of the proposed BMP, or
#the underlying bedrock is within 1 m below the bottom of the proposed BMP, or
#the seasonal high groundwater level (i.e. water table) comes within 1 m below the bottom of the proposed BMP.
#the seasonal high groundwater level (i.e. water table) comes within 1 m below the bottom of the proposed BMP.
}}
}}
{{:Groundwater}}
==Planning==
==Planning==