Changes

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Infiltration of stormwater into underlying soils is one the priority level 1. mechanisms to achieve MOECC [[Runoff volume control targets]]. In many areas of Ontario, where municipal supplies of potable water are drawn from aquifers, it's also an important mechanism for groundwater recharge.

Infiltration of stormwater into underlying soils is one the priority level 1. mechanisms to achieve MOECC [[runoff volume control targets]]. In many areas of Ontario, where municipal supplies of potable water are drawn from aquifers, it's also an important mechanism for groundwater recharge.

{{textbox|Infiltration is promoted through a number of LID BMPs:

{{textbox|Infiltration is promoted through a number of LID BMPs:

*[[Infiltration chambers]] (underground)

*[[Infiltration chambers]] (underground)

|+ Suggested safety factors to be applied to measured percolation rate when designing infiltration facilities

|+ Suggested safety factors to be applied to measured percolation rate when designing infiltration facilities

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!style="background: darkcyan; color: white" rowspan = "2"|Catchment area

!rowspan = "2"|Catchment area

!style="background: darkcyan; color: white" colspan="3"|Consequence of failure

!colspan="3"|Consequence of failure

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!style="background: darkcyan; color: white"|No damage or inconvenience

!No damage or inconvenience

!style="background: darkcyan; color: white"|Minor damage or inconvenience to external structures (e.g. ponding in parking lot)

!Minor damage or inconvenience to external structures (e.g. ponding in parking lot)

!style="background: darkcyan; color: white"|Significant damage to buildings or infrastructure (e.g. flooding damage)

!Significant damage to buildings or infrastructure (e.g. flooding damage)

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|<100 m²||1.5||2||10

|<100 m²||1.5||2||10