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!colspan="2" style="background:white; color:black"| LID Practice
!colspan="4" style="background: orange; color: black"|CANADA
!colspan="10" style="background: brown; color: white"|United States 
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!colspan="2" style="backgroung=green; color:white"|Permeable Pavement|| CVC+TRCA (Factsheets-2010)<ref> http://www.creditvalleyca.ca/wp-content/uploads/2012/02/lid-swm-guide-apdxa-bioretention.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>|| LID-Design Guide Edmonton- 2014|| New York State SWM Design Manual-2015|| Massachusets SW BMP-2013 || District of Columbia-SWM Guidebook-2010 ||  San Diego LID Handbook-2014||  Alabama LID Handbook-2013  || W. Virginia-SWM design guidance manual-2012 || Rhode Island-SW design & Installation Standards Manual-2012 || Minnesota SW Manual-2016 || Tennessee-LID Development-SWM 2016 || Texas-LID Technical Guidance Manual-2013
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|colspan="2" |'''(Impervious /permeable pavemet) area''' ||  <= 1.2 ||  ||  <= 1.2 || < =3.0 || Limit CDA to small adjacent impervious area ||  || 2-5 X the SA of PP || 2:1 || 3:1                             || 2:1 || DA nolimit, runoff from surrounding areas minimized || 2:1-5:1        Note 1 || L1- 1:1, L2- No IP     Note 2 || 1:1
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|colspan="2"| '''Depth to high water table (m)''' || 1 ||  || at least 1 || 0.6-1.0 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" |'''Slope of permeable pavement surface (%)''' || 1-5 ||  || 1-5 || 0.5-2.0 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" | '''A capped vertical sandpipe, perfored instaled to the bottom of the facility to monitor drainage time''' || 100-150 mm ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" | '''Botom slope if the system is not designed for infiltratin (%)''' || 1-5 ||  || 1-5 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" | '''Drainage time of the pavement reservoir after the storm event''' || <  72 hr ||  || recommended 48 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" | '''Setback from building Foundation(m)''' || 4 ||  || 4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2"| '''Material''' 
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|colspan="2" style="text-align: right;| Pervious Concrete ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Compressive strength (Mpa) ||  ||  ||  ||  || 5.5-20 ||  ||  ||  ||  || PA and PC must have 10-25% VS,sub-base 40% VS ||  ||  ||                                   PC VS:15-25%;      PA VS: 15-20%; PICP VS:8-20%; CGP VS:20-50% ||                                  PICP OA: 5-15%, CGP OVC: 20-50%; PC VC:15-25%; PA VC: 15-20% || PA/PC: 10-25% void space, pavers 15% void ratio ||  ||  || 
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|colspan="2" style="text-align: right;|Void ratio (%) ||  ||  ||  ||  || 14-31 || 15-25 || 14-31 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Permeability (mm/hr) ||  ||  ||  ||  || 900-21500 || 900-21500 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Thickness (mm) ||  ||  ||  ||  || 100-150 || 100-150 || 100-150 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2"|'''Porous Asphalt''' 
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|colspan="2" style="text-align: right;| Air voids (%) ||  ||  ||  ||  || min. 16 || min. 16 || min. 16 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Thickness (mm) ||  ||  ||  ||  || 50-100 || 50-100 || 50-100 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2"|'''Permeable Pavers''' 
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|colspan="2" style="text-align: right;| Diameter of crushed aggregate (mm) ||  ||  ||  ||  || 5 ||  || 5 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Thickness for vehicular applications (mm) ||  ||  ||  ||  || 80 ||  || 80 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Thickness for pedistrian applications (mm) ||  ||  ||  ||  || 60 ||  || 60 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;| Joint widths for pedistrian applications (mm) ||  ||  ||  ||  || < 15 ||  || < 15 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2"|'''Interlocking concrete pavers''' 
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|colspan="2" style="text-align: right;|Thickness (mm) ||  ||  ||  ||  ||  || 60-80 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2"|'''Stone reservoir'''  
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|colspan="2" style="text-align: right;|Filter course diameter ||  ||  ||  ||  ||  ||  ||  || 10-12 mm ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Depth below base pf pavement ||  ||  ||  ||  ||  ||  ||  || 25-30 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Depth below subbase, mm ||  ||  ||  ||  ||  ||  ||  || 50-500 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Subbase diameter ||  ||  ||  ||  ||  ||  ||  || 25-40 mm ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Depth below filter course ||  ||  ||  ||  ||  ||  ||  || 50-250 mm ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Granular subbase stone diameter (mm) ||  ||  ||  ||  || 50 || 50 || 50 || > 50 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Void space ratio ||  ||  ||  ||  || 0.4 ||  || 0.4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Granular base stone diameter (mm) ||  ||  ||  ||  || 20 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Void space ratio ||  ||  ||  ||  ||  || 0.3-0.4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Bedding stone diameter (mm) ||  ||  ||  ||  || 5 || 5 || 5 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Void ratio (%) ||  ||  ||  ||  ||  || 0.3-0.4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Time to drain stone bed, hr ||  ||  ||  ||  ||  || 24-72 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" style="text-align: right;|Thickness (mm) ||  ||  ||  ||  || 40-75 || 40-75 || 40-75 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|colspan="2" |G'''eotextle''' 
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|  || Between stone reseroir and native soil ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|  || Underdrain (optional), infiltratio rate <15 mm/hr ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|  || Diameter (mm) ||  ||  ||  ||  || >= 100 || > 200 || >= 100 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|  || Diameter of perforations in pipes (mm)  ||  ||  ||  ||  || 10 ||  || 10 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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|  || Above the bottom of the gravel  layer (mm) ||  ||  ||  ||  ||  || 100 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| Facilties reciving road runoff are not located within time of travel  ||  ||  ||  ||  ||  || 2 ||  || 2 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| wellhead protection areas, year ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| Subsoil infiltration rate, mm/hr. ||  ||  ||  ||  ||  ||  ||  ||  || >= 13 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| When contact with anti-skid material ||  ||  ||  ||  ||  ||  ||  ||  || >= 26 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| When contributing area > 4 hectares ||  ||  ||  ||  ||  ||  ||  ||  || >=35 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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| Emptying Time, hrs. ||  ||  ||  ||  ||  ||  ||  ||  || < 72 ||  ||  ||  ||  ||  ||  ||  ||  ||  || 
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