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→Designing within constraints
===Designing within constraints===
===Designing within constraints===
{{textbox|Infiltration can still be optimized on low permeability soils with infiltration rates ≤ 15 mm/hr:
{{textbox|Infiltration facilities can be effective on low permeability soils with infiltration rates ≤ 15 mm/hr:
*See [[Underdrains| underdrains]] for [[Bioretention| bioretention]] and [[Stormwater Tree Trences|stormwater tree trenches]], and
*See [[Underdrains| underdrains]] and
*Results from STEP studies of infiltration practices on [[low permeability soils]]
*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: