Changes

|'''[[Infiltration trenches]] or [[Infiltration chambers]]'''

|'''[[Infiltration trenches]] or [[Infiltration chambers]]'''

|1

|1

|5:1 to 20:1||Not a constraint||1 to 2||0 to 1||<15 %||No||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No||2 yr

|5:1 to 20:1||Not a constraint||1 to 2||0 to 1||<15 %||No*<ref name="example1">May be allowed under special circumstances and if appropriate mitigation actions are taken - please contact your local Source Protection Region (SPR) or Source Protection Area (SPA) for further information. You can find your associated [https://conservationontario.ca/fileadmin/pdf/conservation_authorities_section/SWPSouthernON_EN.pdf SPR/SPA based on your location here] and then visit their [https://conservationontario.ca/conservation-authorities/source-water-protection/source-protection-plans-and-resources site here]</ref>||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No||2 yr

|-

|-

|'''[[Bioretention]]'''

|'''[[Bioretention]]'''

|1 (infiltrating); Not a constraint (non-infiltrating)

|1 (infiltrating); Not a constraint (non-infiltrating)

|5:1 to 15:1||Decompaction and [[Underdrain|underdrain]] recommended<br>if < 15 mm/hr (infiltrating)||1 to 2||5 to 10||0 to 2||No (infiltrating); Yes (non-infiltrating)||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 yr (infiltrating); None (non-infiltrating)

|5:1 to 15:1||Decompaction and [[Underdrain|underdrain]] recommended<br>if < 15 mm/hr (infiltrating)||1 to 2||5 to 10||0 to 2||No (infiltrating)*<ref name="example1" />; Yes (non-infiltrating)||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 yr (infiltrating); None (non-infiltrating)

|-

|-

|'''[[Stormwater planters]]'''

|'''[[Stormwater planters]]'''

|Not a constraint

|Not a constraint

|5:1||Not a constraint||1 to 2||2 to 5||0 to 2||No (infiltrating); Yes (non-infiltrating)||Building Foundation, Trees||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|5:1||Not a constraint||1 to 2||2 to 5||0 to 2||No (infiltrating)*<ref name="example1" />; Yes (non-infiltrating)||Building Foundation, Trees||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|-

|-

|'''[[Vegetated filter strips]]'''

|'''[[Vegetated filter strips]]'''

|Not a constraint

|Not a constraint

|4:1 or less||Decompaction if < 15 mm/hr||0 to 1||15 to 20||1 to 5||No||None||Yes||None

|4:1 or less||Decompaction if < 15 mm/hr||0 to 1||15 to 20||1 to 5||No*<ref name="example1" />||None||Yes||None

|-

|-

|'''[[Permeable pavements]]'''

|'''[[Permeable pavements]]'''

|1 (infiltrating); Not applicable (non-infiltrating)

|1 (infiltrating); Not applicable (non-infiltrating)

|0 to 1:1||[[Underdrain]] recommended <br> if < 15 mm/hr (infiltrating)||0.5 to 1||0||1 to 5||No (infiltrating); Yes (non-infiltrating)||4m-Underground Utilities<br>Drinking Water Wellhead<br>Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|0 to 1:1||[[Underdrain]] recommended <br> if < 15 mm/hr (infiltrating)||0.5 to 1||0||1 to 5||No (infiltrating)*<ref name="example1" />; Yes (non-infiltrating)||4m-Underground Utilities<br>Drinking Water Wellhead<br>Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|-

|-

|'''[[Enhanced swales]] (featuring check dams)'''

|'''[[Enhanced swales]] (featuring check dams)'''

|1  

|1  

|5:1 to 10:1||Decompaction if < 15 mm/hr||1 to 3||5 to 15||0.5 to 6||No||4m- Building Foundation<br>Underground Utilities||No||2 Yr

|5:1 to 10:1||Decompaction if < 15 mm/hr||1 to 3||5 to 15||0.5 to 6||No*<ref name="example1" />||4m- Building Foundation<br>Underground Utilities||No||2 Yr

|-

|-

|'''[[Bioswales]] (Dry swales)'''

|'''[[Bioswales]] (Dry swales)'''

|1 (infiltrating); Not applicable (non-infiltrating)

|1 (infiltrating); Not applicable (non-infiltrating)

|5:1 to 15:1||Decompaction and [[Underdrain|underdrain]] recommended <br> if < 15 mm/hr (infiltrating)||1 to 3||5 to 10||0.5 to 6||No (infiltrating); Yes (non-infiltrating)||4m (3m if impermeable liner<br>is used) Building foundation,<br> Underground utilities,<br> Drinking Water Wellhead Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|5:1 to 15:1||Decompaction and [[Underdrain|underdrain]] recommended <br> if < 15 mm/hr (infiltrating)||1 to 3||5 to 10||0.5 to 6||No (infiltrating)*<ref name="example1" />; Yes (non-infiltrating)||4m (3m if impermeable liner<br>is used) Building foundation,<br> Underground utilities,<br> Drinking Water Wellhead Protection Areas||No (infiltrating); Yes (non-infiltrating)||2 Yr (infiltrating); None (non-infiltrating)

|-

|-

|'''[[Exfiltration trenches]]'''

|'''[[Exfiltration trenches]]'''

|1

|1

|5:1 to 10:1||Not a constraint||1 to 3||0||< 15%||No||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No||2 Yr

|5:1 to 10:1||Not a constraint||1 to 3||0||< 15%||No*<ref name="example1" />||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||No||2 Yr

|-

|-

|'''[[Stormwater Tree Trenches|Stormwater tree trenches]]'''

|'''[[Stormwater Tree Trenches|Stormwater tree trenches]]'''

|1  

|1  

|5:1 to 15:1||[[Underdrain]] recommended<br>if < 15 mm/hr||1 to 2||5 to 10||0 to 2||No||4m- Building Foundation<br>Underground Utilities, <br>Drinking Water Wellhead<br>Protection Areas||No||2 yr

|5:1 to 15:1||[[Underdrain]] recommended<br>if < 15 mm/hr||1 to 2||5 to 10||0 to 2||No*<ref name="example1" />||4m- Building Foundation<br>Underground Utilities, <br>Drinking Water Wellhead<br>Protection Areas||No||2 yr