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Created page with "{|class="wikitable" |+ |- !style="background: cyan; color: black"|LID Stormwater Management Practice !style="background: cyan; color: black"|Depth to High Water or Bedrock (..."
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!style="background: cyan; color: black"|LID Stormwater Management Practice
!style="background: cyan; color: black"|Depth to High Water or Bedrock (m)<ref>Minimum depth between the base of the facility and the elevation of the seasonally high water table or top of bedrock</ref>
!style="background: cyan; color: black"|Typical Ratio of <br>Impervious Drainage Area<br> to Treatment Facility Area
!style="background: cyan; color: black"|Native Soil Infiltration Rate (mm/hr)<ref>Infiltration rate estimates based on measurements of hydraulic conductivity under field saturated conditions at the proposed location and depth of the practice</ref>
!style="background: cyan; color: black"|Head (m)<ref>Vertical distance between the inlet and outlet of the LID practice</ref>
!style="background: cyan; color: black"|Space % <ref>Percent of open pervious land on the site that is required for the LID practice</ref>
!style="background: cyan; color: black"|Slope % <ref>Slope at the LID practice location</ref>
!style="background: cyan; color: black "|Applicable in Pollution Hotspots <ref>Suitable in pollution hot spots or runoff source areas where land uses or activities have the potential to generate highly contaminated runoff</ref>
!style="background: cyan; color: black"|Set Backs
!style="background: cyan; color: black"|Water Table <ref>Separated from the seasonally high water table or top of bedrock elevation</ref>
!style="background: cyan; color: black"|Wellhead Protection Area<ref>|Time-of-travel within wellhead protection areas</ref>
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!Rain Barrel
!Not applicable
!|[5 to 50 m<sup>2</sup>]||Not applicable||1||0||NA||Yes||None||None||None
|-
!Cistern
!Not applicable
!|1:1||Not applicable||0||0||0||Yes||None||None||None
|-
!Roof Downspout Disconnection
!Not applicable
!|[5 to 100 m<sup>2</sup>]||Amend if < 15 mm/hr||0.5||5 to 20||1 to 5||Yes||Building Foundation||None||None
|-
!Soakaway, Infiltration Trench or Chamber
!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||1 m||2 yr
|-
!Bioretention
!1
!|5:1 to 15:1||Underdrain required<br>if < 15 mm/hr||1 to 2||5 to 10||0 to 2||No||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||1 m||2 yr
|-
!Biofilter (Filtration only Bioretention Design)
!Not applicable
!|5:1||Not applicable||1 to 2||2 to 5||0 to 2||Yes||Building Foundation, Trees||None||None
|-
!Vegetated Filter Strip
!1
!|5:1||Amend if < 15 mm/hr||0 to 1||15 to 20||1 to 5||No||None||None||None
|-
!Permeable Pavement
!1
!|1:1 to 1.2:1||Underdrain Required <br> if < 15 mm/hr||0.5 to 1||0||1 to 5||No||4m-Underground Utilities<br>Drinking Water Wellhead<br>Protection Areas||1 m||2 Yr
|-
!Enhanced Grass Swale
!1
!|5:1 to 10:1||Not applicable||1 to 3||5 to 15||0.5 to 6||No||4m- Building Foundation<br>Underground Utilities||1 m||None
|-
!Dry Swale
!1
!|5:1 to 15:1||Underdrain Required <br> if < 15 mm/hr||1 to 3||5 to 10||0.5 to 6||No||4m (3m if impermeable liner<br>is used)Building foundation,<br> Underground utilities, drinking<br>water wellhead protection areas||1 m||2 Yr
|-
!Perforated Pipe System
!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||1 m||2 Yr
|}
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!style="background: cyan; color: black"|LID Stormwater Management Practice
!style="background: cyan; color: black"|Depth to High Water or Bedrock (m)<ref>Minimum depth between the base of the facility and the elevation of the seasonally high water table or top of bedrock</ref>
!style="background: cyan; color: black"|Typical Ratio of <br>Impervious Drainage Area<br> to Treatment Facility Area
!style="background: cyan; color: black"|Native Soil Infiltration Rate (mm/hr)<ref>Infiltration rate estimates based on measurements of hydraulic conductivity under field saturated conditions at the proposed location and depth of the practice</ref>
!style="background: cyan; color: black"|Head (m)<ref>Vertical distance between the inlet and outlet of the LID practice</ref>
!style="background: cyan; color: black"|Space % <ref>Percent of open pervious land on the site that is required for the LID practice</ref>
!style="background: cyan; color: black"|Slope % <ref>Slope at the LID practice location</ref>
!style="background: cyan; color: black "|Applicable in Pollution Hotspots <ref>Suitable in pollution hot spots or runoff source areas where land uses or activities have the potential to generate highly contaminated runoff</ref>
!style="background: cyan; color: black"|Set Backs
!style="background: cyan; color: black"|Water Table <ref>Separated from the seasonally high water table or top of bedrock elevation</ref>
!style="background: cyan; color: black"|Wellhead Protection Area<ref>|Time-of-travel within wellhead protection areas</ref>
|-
!Rain Barrel
!Not applicable
!|[5 to 50 m<sup>2</sup>]||Not applicable||1||0||NA||Yes||None||None||None
|-
!Cistern
!Not applicable
!|1:1||Not applicable||0||0||0||Yes||None||None||None
|-
!Roof Downspout Disconnection
!Not applicable
!|[5 to 100 m<sup>2</sup>]||Amend if < 15 mm/hr||0.5||5 to 20||1 to 5||Yes||Building Foundation||None||None
|-
!Soakaway, Infiltration Trench or Chamber
!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||1 m||2 yr
|-
!Bioretention
!1
!|5:1 to 15:1||Underdrain required<br>if < 15 mm/hr||1 to 2||5 to 10||0 to 2||No||4m- Building Foundation<br>Underground Utilities, Trees,<br>Drinking Water Wellhead<br>Protection Areas||1 m||2 yr
|-
!Biofilter (Filtration only Bioretention Design)
!Not applicable
!|5:1||Not applicable||1 to 2||2 to 5||0 to 2||Yes||Building Foundation, Trees||None||None
|-
!Vegetated Filter Strip
!1
!|5:1||Amend if < 15 mm/hr||0 to 1||15 to 20||1 to 5||No||None||None||None
|-
!Permeable Pavement
!1
!|1:1 to 1.2:1||Underdrain Required <br> if < 15 mm/hr||0.5 to 1||0||1 to 5||No||4m-Underground Utilities<br>Drinking Water Wellhead<br>Protection Areas||1 m||2 Yr
|-
!Enhanced Grass Swale
!1
!|5:1 to 10:1||Not applicable||1 to 3||5 to 15||0.5 to 6||No||4m- Building Foundation<br>Underground Utilities||1 m||None
|-
!Dry Swale
!1
!|5:1 to 15:1||Underdrain Required <br> if < 15 mm/hr||1 to 3||5 to 10||0.5 to 6||No||4m (3m if impermeable liner<br>is used)Building foundation,<br> Underground utilities, drinking<br>water wellhead protection areas||1 m||2 Yr
|-
!Perforated Pipe System
!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||1 m||2 Yr
|}