Changes

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!colspan="2" style="background:white; color:black"| LID Practice

!colspan="2"| LID Practice

!colspan="3" style="background: orange; color: black"|CANADA

!colspan="3"|CANADA

!colspan="5" style="background: brown; color: white"|United States  

!colspan="5"|United States  

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!colspan="2" style="backgroung=green; color:white"|Soakaways, Infiltration Trenches and Chambers|| CVC+TRCA (Factsheets-2010)<ref> http://www.creditvalleyca.ca/wp-content/uploads/2012/02/lid-swm-guide-apdxa-soakaways-infiltration-trenches-chambers.pdf</ref>|| Toronto- 2016 || LID-SWM Guide 2010<ref> http://www.creditvalleyca.ca/wp-content/uploads/2014/04/LID-SWM-Guide-v1.0_2010_1_no-appendices.pdf</ref>|| Massachusets SW BMP-2013 || District of Columbia-SWM Guidebook-2010 || W. Virginia-SWM design guidance manual-2012 || Pennsylvania-City of Philadelphia green St. design manual-2014 || Oregon SWM Manual-2014

!colspan="2"|Soakaways, Infiltration Trenches and Chambers|| CVC+TRCA (Factsheets-2010)<ref> http://www.creditvalleyca.ca/wp-content/uploads/2012/02/lid-swm-guide-apdxa-soakaways-infiltration-trenches-chambers.pdf</ref>|| Toronto- 2016 || LID-SWM Guide 2010<ref> http://www.creditvalleyca.ca/wp-content/uploads/2014/04/LID-SWM-Guide-v1.0_2010_1_no-appendices.pdf</ref>|| Massachusets SW BMP-2013 || District of Columbia-SWM Guidebook-2010 || W. Virginia-SWM design guidance manual-2012 || Pennsylvania-City of Philadelphia green St. design manual-2014 || Oregon SWM Manual-2014

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|colspan="2" |'''[[Setback from Building Foundation (m)]]'''

|colspan="2" |Setback from Building Foundation (m)|| 4 ||  || 4 ||  ||  ||  ||    ||

| 4 ||  || 4 ||  ||  ||  ||    ||

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|colspan="2"|'''[[(Impervious Drainage/Treatment) Area]]'''

|colspan="2"|(Impervious Drainage/Treatment) Area||5:1-20:1, 10:1 recommended ||  || 5:1-20:1, 10:1 recommended ||CDA < 5 acres||CDA < 2 acres (T), < 5 acres (B)||< 2 acres || Max. load of 10:1 for infiltration systems (not specific to LID type)||CDA: max. 15000 ft2|

|5:1-20:1, 10:1 recommended ||  || 5:1-20:1, 10:1 recommended ||CDA < 5 acres||CDA < 2 acres (T), < 5 acres (B)||< 2 acres || Max. load of 10:1 for infiltration systems (not specific to LID type)||CDA: max. 15000 ft2|

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|colspan="2"| '''[[Natural Slope (%)]]''' || < 15 ||  || < 15 ||  ||  ||  ||  ||  

|colspan="2"|Natural Slope (%)|| < 15 ||  || < 15 ||  ||  ||  ||  ||  

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| colspan="2"|'''[[A capped vertical standpipe, perforated instaled to the bottom of the facility to monitor drainage time (mm)]]'''  || 100-150  ||  || 100-150  ||  ||  ||  ||  ||  

| colspan="2"|A capped vertical standpipe, perforated installed to the bottom of the facility to monitor drainage time (mm)'''  || 100-150  ||  || 100-150  ||  ||  ||  ||  ||  

 

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| colspan="2"|'''[[Filter Media]]'''

| colspan="2"|[[Filter media]]

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|colspan="2" style="text-align: right;|Stone Resvoir ||  ||  ||  || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" ||  || Drain rock 3/4"-2.5 " washed open graded aggregate

|colspan="2" style="text-align: right;|[[Stone Resvoir]]||  ||  ||  || 1.5" to 3" stone dia., 2" pea gravel above 6" sand below || 1.5"-3.5" stone dia. For stone layer, 3" layer of washed river stone, or No. 8 or 89 stone above, 6-8 " of sand below || Stone 1.5"-3.5" ||  || Drain rock 3/4"-2.5 " washed open graded aggregate

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|colspan="2" style="text-align: right;| Void Space(%) || 30-40 || 30-40 || 30-40 ||  ||  ||  ||  ||  

|colspan="2" style="text-align: right;| Void Space(%) || 30-40 || 30-40 || 30-40 ||  ||  ||  ||  ||  

|colspan="2" style="text-align: right;| Granular Material (clear stone)(mm) || 50 || 50 || 50 ||  ||  ||  ||  ||  

|colspan="2" style="text-align: right;| Granular Material (clear stone)(mm) || 50 || 50 || 50 ||  ||  ||  ||  ||  

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|colspan="2" style="text-align: right;|Geotextile around the stone reservoir with an overlap at the top (mm) || min. 300  || 300 || min. 300  ||  ||  ||  ||  ||  

|colspan="2" style="text-align: right;|Geotextile around the stone reservoir with an overlap at the top (mm)|| min. 300  || 300 || min. 300  ||  ||  ||  ||  ||  

 

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| colspan="2"| '''[[Bottom Width of Excavations (mm)]]''' || 600-2400 || 600-2400 || 600-2400 ||  ||  ||  ||  ||  

|colspan="2"|Bottom Width of Excavations (mm)|| 600-2400 || 600-2400 || 600-2400 ||  ||  ||  ||  ||  

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| colspan="2"|'''[[Minimum Depth of Excavations under concrete laneway (mm)]]''' ||  ||  3000||  ||  ||  ||  || ||

|colspan="2"|Minimum Depth of Excavations under concrete laneway (mm)||  ||  3000||  ||  ||  ||  || ||

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| colspan="2" style=" color:brown"| '''Length of Time for Draining after Storm Event (>25mm)'''  ||max. 72 hr.||  || max. 72 hr., 48 hr. recommended||  ||    ||    ||    ||

|colspan="2"|Length of Time for Draining after Storm Event (>25mm)||max. 72 hr.||  || max. 72 hr., 48 hr. recommended||  ||    ||    ||    ||

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| colspan="2"| '''[[Depth to High Water Table (m)]]''' || 1 ||  || 1 ||  ||    ||  ||  ||  |     

|colspan="2"|Depth to High Water Table (m)]]''' || 1 ||  || 1 ||  ||    ||  ||  ||  |     

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| colspan="2"|'''[[Sand Layer Depth (mm)]]''' || |  ||150-300 ||  ||  ||  ||  ||  ||  |                       Length of Time for Draining after Storm Event (>25mm)

|colspan="2"|Sand Layer Depth (mm)|| |  ||150-300 ||  ||  ||  ||  ||  ||  |Length of Time for Draining after Storm Event (>25mm)

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| colspan="2"|'''[[Subdrains Inlet Pipes (mm)]]''' ||  || 100-200 ||  ||  ||  ||  ||  ||  |

|colspan="2"|Subdrains Inlet Pipes (mm)||  || 100-200 ||  ||  ||  ||  ||  ||  |

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| colspan="2"|'''[[Overflow is required when the infiltration rate equals]]''' ||  || < 15 mm/hr ||  ||  ||  ||  ||  ||  |  

|colspan="2"|Overflow is required when the infiltration rate equals||  || < 15 mm/hr ||  ||  ||  ||  ||  ||  |  

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| colspan="2"|'''[[Facilities receiving road runoff are not located within time of travel wellhead protection areas (years)]]''' || 2 ||  || 2 ||  ||  ||  ||  ||  |

|colspan="2"|Facilities receiving road runoff are not located within time of travel wellhead protection areas (years)|| 2 ||  || 2 ||  ||  ||  ||  ||  |

 

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