Changes

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or

#in areas where increased infiltration will result in elevated groundwater levels, which can be demonstrated to damage critical utilities or private property, or

#where prohibitions and/or restrictions exist per approved Source Protection Plans (see MOECC guidance).

#where prohibitions and/or restrictions exist per approved Source Protection Plans (see MOECC guidance).

Infiltration facilities should be designed with drainage modifications where:  

Infiltration facilities should be designed with drainage 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 comes within 1 m below the bottom of the proposed BMP.

#the seasonal high groundwater level comes within 1 m below the bottom of the proposed BMP.

===Designing within constraints===

===Designing within constraints===

{{TextBox|1= Infiltration can still be optimized over 'tight' soils with infiltration rates ≤ 15 mm/hr:

{{TextBox|1= Infiltration can still be optimized over 'tight' soils with infiltration rates ≤ 15 mm/hr: