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Line 1: − + − + + + − + − | || || Factsheets-2010 || Construction Guide- 2012 || Retrofit Guide 2014 || || || || || || || || || || || || || || || || − + − | Depth || || 1-1.25 || || || 1-1.25 || 1-1.25 || 0.5-1.0 || || || || || || || || || >= 2.5 ft. || || || || + + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + − + + − + + − + + − + + − + − + − + + − + + + − + − + + − + + − + + − + + − + + − + + − + + − + + + + + − + + − + − + − + − + − + − + − + − + − + − + − + − + − + + − | Surface area/Contributing drainage area, % || || 10-20 % || || || || 10-20 % || 3.0-30 % || || || || || || || || || (5-10)%- min. 200 ft2 || || || || − |- − | Contributing impervious area || || || || || || || < 4.0 ha. || ` || || || || || || || || || || || < 15000 ft2 || − |- − | Facility flow velocity || || || || || || || < 0.3 m/s-planted area || || || || || || || || || <= 1 ft/sec, tree-shurb-mulch cell || || || || − |- − | || || || || || || || < 0.9 m/s- mulched zone || || || || || || || || || <= 3 ft/sec , grassed cell || || || || − |- − | Discharge velocity (outlet point) || || || || || || || || || || || || || || || || < 4 ft/sec || || || || − |- − | Side slope (H:V) || || || || || || || 4:1 preferred(max 2:1) || || || || || || || || || 3:1 (H:V) || || || || − |- − | Surface geometery (length/width) || || || || || || || 2:1 || || || || || || || || || || || || || − |- − | Infiltration trench (optional) || || || || || || || || || || || || || || || || || || || || − |- − | Depth, m || || || || || || || 0.5-1.0 || || || || || || || || || || || || || − |- − | Width, m || || || || || || || 1.0-6.0 || || || || || || || || || || || || || − |- − | Bottom slope, % || || || || || || || 0 || || || || || || || || || || || || || − |- − | C/N Ratio || || || || || || || || || || || || || || || 12:1-25:1 || || || || || − |- − | || || || || || || || || || || || || || || || || || || || ||
no edit summary
{| class="wikitable" style="width: 175%; height: 200px;"
{| class="wikitable" style="width: 175%; height: 200px;"
!style="background: cyan; colspan=6;color: black"|Canada
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!style="background: cyan; color: black"|US
!colspan="2" style="background:darkcyan"|
!colspan="6" style="background: cyan; color: black"|CANADA
!colspan="13" style="background: darkcyan; color: white"|United States
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| Bioretention || || CVC+TRCA || CVC || || Toronto- 2016 || LID-SWM Guide 2010 || 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 || Pennsylvania-City of Philadelphia green St. design manual-2014 || Minnesota SW Manual-2017 || Tennessee-LID Development-SWM 2016 || Texas-LID Technical Guidance Manual-2013 || Oregon SWM Manual-2014 || Oregon State Univ. Fact Sheets-2011
!colspan="2" |[[Bioretention]] || CVC+TRCA (Factsheets-2010) || CVC-Construction Guide-2012 || CVC-Retrofit Guide-2014 || Toronto- 2016 || LID-SWM Guide 2010 || 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 || Pennsylvania-City of Philadelphia green St. design manual-2014 || Minnesota SW Manual-2017 || Tennessee-LID Development-SWM 2016 || Texas-LID Technical Guidance Manual-2013 || Oregon SWM Manual-2014 || Oregon State Univ. Fact Sheets-2011
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| Filter media depth (m) || || || || || || || || || || || || || || || || || || || ||
!colspan="2"|Filter media Depth || 1-1.25 || || || 1-1.25 || 1-1.25 || 0.5-1.0 || || || || || || || || || >= 2.5 ft. || || || |
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!colspan="2"|Composition
!colspan="19"|
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| Composition || Topsoil || || || || || || || 30-50% || 20-30 % || || || || 8-20 % || || || Table 1 & 2 (below) || || || ||
!|!|Topsoil|| || || || || || || 30-50% || 20-30 % || || || || 8-20 % || || || Table 1 & 2 (below) || || || ||
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| || sand || 85-88 % || Fine sand=0-17%, Coarse to medium sand=71-92 % || 85-88 % || 85-88 % || 85-88 % || 50-85 % || 50-70 || 40% || 85-88 % || 65% sand, 20% sand loam || 85-88 % || 70-88 % || 85-88 % || 50-80 % || || 70-85 % (sandy loam) || 85-88 % || 66% || 60% (sandy loam)
!| || sand || 85-88 % || Fine sand=0-17%, Coarse to medium sand=71-92 % || 85-88 % || 85-88 % || 85-88 % || 50-85 % || 50-70 || 40% || 85-88 % || 65% sand, 20% sand loam || 85-88 % || 70-88 % || 85-88 % || 50-80 % || || 70-85 % (sandy loam) || 85-88 % || 66% || 60% (sandy loam)
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| || Fines(silt and clay) || 8-12 % || 8-12 % || 8-12 % || 7-12 % || 8-12 % || 10-15% (silt),3-10% (clay), both combined, max 20% || clay < 5% || || 8-12 % || || 8-12 % || || 0-12 % silt, 0-2 % clay || Silt 40% , Clay 10% || || 10-20% (silt), max. 10% (clay) || 8-12 % || ||
!| || Fines(silt and clay) || 8-12 % || 8-12 % || 8-12 % || 7-12 % || 8-12 % || 10-15% (silt),3-10% (clay), both combined, max 20% || clay < 5% || || 8-12 % || || 8-12 % || || 0-12 % silt, 0-2 % clay || Silt 40% , Clay 10% || || 10-20% (silt), max. 10% (clay) || 8-12 % || ||
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| || gravel || || || || || || || || || || || || || || 15% || || || || ||
!| || gravel || || || || || || || || || || || || || || 15% || || || || ||
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| || Organic matter || 3-5 % || 3-5 % || 3-5 % || 3-5 % || 3-5 % || 5-10% || 5% || 30-40 % || 1-5 % || 2-5 % || 3-15 % || 3-5 % || 3-5 % || 2-10 % || || 5-10 % || 2-5 % || 33% || 40%
!| || Organic matter || 3-5 % || 3-5 % || 3-5 % || 3-5 % || 3-5 % || 5-10% || 5% || 30-40 % || 1-5 % || 2-5 % || 3-15 % || 3-5 % || 3-5 % || 2-10 % || || 5-10 % || 2-5 % || 33% || 40%
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| || P-index value || 10-30 ppm || || || 12-30 ppm || 10-30 ppm || || || || 10-30 || || || || || || || || < 15 || ||
!| || P-index value || 10-30 ppm || || || 12-30 ppm || 10-30 ppm || || || || 10-30 || || || || || || || || < 15 || ||
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| || Soluble salts || || || || < 2.0 mmhos/cm || || || || || || || || || || || || || || ||
!| || Soluble salts || || || || < 2.0 mmhos/cm || || || || || || || || || || || || || || ||
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| || Cationic exchange capacity || > 10 meq/100 g || 10 meq/100 g || > 10 meq/100 g || > 10 meq/100 g || > 10 meq/100 g || > 5 meq/100 g || || || > 10 || > 5 || || > 10 || || || || > 10 || || || > 5
!| || Cationic exchange capacity || > 10 meq/100 g || 10 meq/100 g || > 10 meq/100 g || > 10 meq/100 g || > 10 meq/100 g || > 5 meq/100 g || || || > 10 || > 5 || || > 10 || || || || > 10 || || || > 5
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| || pH || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || || || || 6-8 || || || || 6-7 || 6-8.5 (WQ blend) || || 6-8 || || 5.5-7.5
!| || pH || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || 5.5-7.5 || || || || 6-8 || || || || 6-7 || 6-8.5 (WQ blend) || || 6-8 || || 5.5-7.5
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| || Phosphorus || || || || || || 10-30 ppm || || || || || || || || || Table 1 & 2 (below) || || || ||
!| || Phosphorus || || || || || || 10-30 ppm || || || || || || || || || Table 1 & 2 (below) || || || ||
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| || Infiltration rate || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || || || || || || || || || || || || || || ||
!| || Infiltration rate || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || || || || || || || || || || || || || || ||
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| || Surface resistance || || || || <= 110 PSI || || || || || || || || || || || || || || ||
!| || Surface resistance || || || || <= 110 PSI || || || || || || || || || || || || || || ||
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| || Sub-surface resistance || || || || <= 260 PSI || || || || || || || || || || || || || || ||
!| || Sub-surface resistance || || || || <= 260 PSI || || || || || || || || || || || || || || ||
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| || Saturated hydraulic conductivity , mm/hr || || || || || || 25 min. || || || || || || || || || || || || ||
!| || Saturated hydraulic conductivity , mm/hr || || || || || || 25 min. || || || || || || || || || || || || ||
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| || P-Content || || || || || || || || || 10-30 || < 15 ppm || || 7-23 mg/kg || || || || || || ||
!| || P-Content || || || || || || || || || 10-30 || < 15 ppm || || 7-23 mg/kg || || || || || || ||
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| || Compost (optional) || || || || || || 15-25% || || || || 15% || || || || || || || || ||
!| || Compost (optional) || || || || || || 15-25% || || || || 15% || || || || || || || || ||
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| Gravel storage || || || || || || || || || || || || || || || || || || || ||
!colspan="2"|Gravel Storage
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| Void space ratio || || 0.4 || || || || 0.4 || || || || || || || || || || || || || ||
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!| Void space ratio || 0.4 || || || || 0.4 || || || || || || || || || || || || || ||
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| Depth || || min. 300 mm || || || min. 300 mm || min. 300 mm || || || || || || || || || || || || || ||
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!| Depth || min. 300 mm || || || min. 300 mm || min. 300 mm || || || || || || || || || || || || || ||
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| Diameter(clear stone) || || 50 mm || || || 50 mm || 50 mm || || || || || || || || || || || || || ||
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!| Diameter(clear stone) || 50 mm || || || 50 mm || 50 mm || || || || || || || || || || || || || ||
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| Pea gravel choking layer depth (mm) || || 100 || || || || 100 || 100 || || || || || || || || || || || || ||
!colspan="2"|Pea gravel choking layer depth (mm)|| 100 || || || || 100 || 100 || || || || || || || || || || || || ||
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| diameter (mm) || || 3-10 || || || || 3-10 || || || || || || || || || || || || || ||
!colspan="2"|Pea gravel diameter (mm)|| 3-10 || || || || 3-10 || || || || || || || || || || || || || ||
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| Mulch || || || || || || || || || || || || || || || || || || || ||
!colspan="2"|Mulch
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| Depth || || 75 mm || <=75 mm || || 75 mm || 75 mm || 70-80 || || || || || || || || || || || || ||
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!| Depth || 75 mm || <=75 mm || || 75 mm || 75 mm || 70-80 || || || || || || || || || || || || ||
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| Overflow || || || || || || || || || || || || || || || || || || || ||
!colspan="2"|Overflow invert above the filter bed surface || 150-250 || || || <= 250 mm || || || || || || || || || || || || || || ||
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| Overflow invert above the filter bed surface || || 150-250 || || || <= 250 mm || || || || || || || || || || || || || || ||
!colspan="2"|Monitoring Well
!colspan="19"|
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| Monitoring well || || || || || || || || || || || || || || || || || || || ||
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!| Vertical perforated pipe diameter || 100-150 mm || 100-150 mm || || 100-150 mm || 100-150 mm || || || || || || || || || || || || || ||
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| Vertical perforated pipe diameter || || 100-150 mm || 100-150 mm || || 100-150 mm || 100-150 mm || || || || || || || || || || || || || ||
!colspan="2"|Monitoring Well
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| Underdrain || || || || || || || || || || || || || || || || || || || ||
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!| Required when infiltration rate || < 15 mm/hr || || || < 15 mm/hr || || < 13 mm/hr || || || || || || || || || || || || ||
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| Required when infiltration rate || || < 15 mm/hr || || || < 15 mm/hr || || < 13 mm/hr || || || || || || || || || || || || ||
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!| Diameter || min. 100 mm(200 mm recommended) || min. 100 mm, 200 mm is recommended || || min. 200 mm || min. 100 mm(200 mm recommended) || 200 mm || || || || || || || || || 4 inches || || || ||
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| Diameter || || min. 100 mm(200 mm recommended) || min. 100 mm, 200 mm is recommended || || min. 200 mm || min. 100 mm(200 mm recommended) || 200 mm || || || || || || || || || 4 inches || || || ||
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!| Depth above the gravel storage layer || 100 mm || || || 100 mm || || || || || || || || || || || || || || ||
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| Depth above the gravel storage layer || || 100 mm || || || 100 mm || || || || || || || || || || || || || || ||
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!| Available head beween the inflow point and the downstream stream drain invert || 1-1.5 m || || || || 1-1.5 m || || || || || || || Typical CDA 0.1-2.5 acres of 100% IP(<0.5 no underdrain), alternative to checking layer is needle punched non-woven geotextile || || || || || || ||
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| Available head beween the inflow point || || 1-1.5 m || || || || 1-1.5 m || || || || || || || Typical CDA 0.1-2.5 acres of 100% IP(<0.5 no underdrain), alternative to checking layer is needle punched non-woven geotextile || || || || || || ||
!colspan="2"|Contributing drainage area
!colspan="19"|
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!|Typical || 100 m2 to 0.5 hectare || || || || 100 m2 to 0.5 hectare || || || || || || 0.5-2 acres preferred,max 5 acres,BR min. size 200 ft2 || || || || 5 acres || || || ||
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| and the downstream stream drain invert || || || || || || || || || || || || || || || || || || || ||
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!|Maximum recommended || 0.8 hectare || || || || 0.8 hectare || || || || || || || || || || || || || ||
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| Contributing drainage area Typical || || 100 m2 to 0.5 hectare || || || || 100 m2 to 0.5 hectare || || || || || || 0.5-2 acres preferred, max 5 acres, BR min. size 200 ft2 || || || || 5 acres || || || ||
!colspan="2"|Setback from building Foundation(m) || 4 || || || 4 || 4 || 3 (clay), 5 (heavy clay) || || || || || || || || || see table 3 below || || || ||
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| Maximum recommended || || 0.8 hectare || || || || 0.8 hectare || || || || || || || || || || || || || ||
!colspan="2"| (Impervious drainage/treatment facility) area || 5:1 to 15:1 || || || 5:1 to 15:1 || 5:1 to 15:1 || || < 5:1 loading ratio (DA to IA, DA 100% IP) || SA of BR 3 to 6% of CDA || || || sized at 5-8 % of IPCDA || BR SA 3-6% of CDA || || || CDA < 5 acres || CDA < 2.5 acres || CDA < 5 acres || || BR SA: 6-15 % of IP area
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| Setback from building Foundation(m) || || 4 || || || 4 || 4 || 3 (clay), 5 (heavy clay) || || || || || || || || || see table 3 below || || || ||
!colspan="2"|Contributing Slope (%) || 1-5 || || || || 1-5 || || || || || || || || || || >1 % and < 33% || || || ||
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| (Impervious drainage/treatment facility) area || || 5:1 to 15:1 || || || 5:1 to 15:1 || 5:1 to 15:1 || || < 5:1 loading ratio (DA to IA, DA 100% IP) || SA of BR 3 to 6% of CDA || || || sized at 5-8 % of IPCDA || BR SA 3-6% of CDA || || || CDA < 5 acres || CDA < 2.5 acres || CDA < 5 acres || || BR SA: 6-15 % of IP area
!colspan="2"| Slope of the surface, % || || || || || || || || || || || || || || || <= 1% || || || ||
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| Contributing Slope (%) || || 1-5 || || || || 1-5 || || || || || || || || || || >1 % and < 33% || || || ||
!colspan="2"| Water table depth || min. 1.0 m || || || || min. 1.0 m || > 1.8 || || || || || || || || || 3 ft. || || || ||
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| Slope of the surface, % || || || || || || || || || || || || || || || || <= 1% || || || ||
!colspan="2"| Outlet || || min. 100 mm above the bottom of the facility || || || || || || || || || || || || || Difference in elevation between inflow and outflow =4-6 ft (when underdrain is used) || || || ||
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| Water table depth || || min. 1.0 m || || || || min. 1.0 m || > 1.8 || || || || || || || || || 3 ft. || || || ||
!colspan="2"| Maximum ponding depth above the filter bed surface || 150-250 mm || || || 250 mm || 150-250 mm || 350 mm || || || || || || || || || 18 inch || || || ||
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| Outlet || || || min. 100 mm above the bottom of the facility || || || || || || || || || || || || || Difference in elevation between inflow and outflow =4-6 ft (when underdrain is used) || || || ||
!colspan="2"| Facilties receiving road runoff are not located within time of travel wellhead protection areas, year || 2 || || || || 2 || || || || || || || || || || || || || ||
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| Maximum ponding depth above the filter bed surface || || 150-250 mm || || || 250 mm || 150-250 mm || 350 mm || || || || || || || || || 18 inch || || || ||
!colspan="2"| Drainage time of ponded water after the end of storm event , hr || || || || || 24 (48 recommd.) || < 48 (2 yr. design) || || || || || || || || || Max. 48 hr. || || || ||
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| Facilties receiving road runoff are not located within time of travel || || 2 || || || || 2 || || || || || || || || || || || || || ||
!colspan="2"| Inlet design for non-point source-grass filter buffer, m || || || || || || 0.5-3.0 || || || || || || || || || || || || ||
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| wellhead protection areas, year || || || || || || || || || || || || || || || || || || || ||
!colspan="2"| Surface area/Contributing drainage area, % || 10-20 % || || || || 10-20 % || 3.0-30 % || || || || || || || || || (5-10)%- min. 200 ft2 || || || ||
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| Drainage time of ponded water after the end of storm event , hr || || || || || || 24 (48 recommd.) || < 48 (2 yr. design) || || || || || || || || || Max. 48 hr. || || || ||
!colspan="2"| Contributing impervious area || || || || || || < 4.0 ha. || ` || || || || || || || || || || || < 15000 ft2 ||
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| Inlet design for non-point source-grass filter buffer, m || || || || || || || 0.5-3.0 || || || || || || || || || || || || ||
!colspan="2"|Facility Flow Velocity
!colspan="19"|
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