Difference between revisions of "Talk:Bioretention Design Guide"
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!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 | !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 | ||
|- | |- | ||
| Filter media depth (m) || || || || || || || || || || || || || || || || || || || || | |||
|- | |||
| Depth || || 1-1.25 || || || 1-1.25 || 1-1.25 || 0.5-1.0 || || || || || || || || || >= 2.5 ft. || || || || | |||
|- | |||
| Composition || Topsoil || || || || || || || 30-50% || 20-30 % || || || || 8-20 % || || || Table 1 & 2 (below) || || || || | |||
|- | |- | ||
| || 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) | |||
|- | |- | ||
| || 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 % || || | |||
|- | |- | ||
| || gravel || || || || || || || || || || || || || || 15% || || || || || | |||
|- | |- | ||
| || 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% | |||
|- | |- | ||
| || P-index value || 10-30 ppm || || || 12-30 ppm || 10-30 ppm || || || || 10-30 || || || || || || || || < 15 || || | |||
|- | |- | ||
| || Soluble salts || || || || < 2.0 mmhos/cm || || || || || || || || || || || || || || || | |||
|- | |- | ||
| || 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 | |||
|- | |- | ||
| || 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 | |||
|- | |- | ||
| || Phosphorus || || || || || || 10-30 ppm || || || || || || || || || Table 1 & 2 (below) || || || || | |||
|- | |- | ||
| || Infiltration rate || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || > 25 mm/hr || || || || || || || || || || || || || || || | |||
|- | |- | ||
| || Surface resistance || || || || <= 110 PSI || || || || || || || || || || || || || || || | |||
|- | |- | ||
| || Sub-surface resistance || || || || <= 260 PSI || || || || || || || || || || || || || || || | |||
|- | |- | ||
| || Saturated hydraulic conductivity , mm/hr || || || || || || 25 min. || || || || || || || || || || || || || | |||
|- | |- | ||
| || P-Content || || || || || || || || || 10-30 || < 15 ppm || || 7-23 mg/kg || || || || || || || | |||
|- | |- | ||
| || Compost (optional) || || || || || || 15-25% || || || || 15% || || || || || || || || || | |||
|- | |- | ||
| Gravel storage || || || || || || || || || || || || || || || || || || || || | |||
|- | |- | ||
| Void space ratio || || 0.4 || || || || 0.4 || || || || || || || || || || || || || || | |||
|- | |- | ||
| Depth || || min. 300 mm || || || min. 300 mm || min. 300 mm || || || || || || || || || || || || || || | |||
|- | |- | ||
| Diameter(clear stone) || || 50 mm || || || 50 mm || 50 mm || || || || || || || || || || || || || || | |||
|- | |- | ||
| Pea gravel choking layer depth (mm) || || 100 || || || || 100 || 100 || || || || || || || || || || || || || | |||
|- | |- | ||
| diameter (mm) || || 3-10 || || || || 3-10 || || || || || || || || || || || || || || | |||
|- | |- | ||
| Mulch || || || || || || || || || || || || || || || || || || || || | |||
|- | |- | ||
| Depth || || 75 mm || <=75 mm || || 75 mm || 75 mm || 70-80 || || || || || || || || || || || || || | |||
|- | |- | ||
| Overflow || || || || || || || || || || || || || || || || || || || || | |||
|- | |- | ||
| Overflow invert above the filter bed surface || || 150-250 || || || <= 250 mm || || || || || || || || || || || || || || || | |||
|- | |- | ||
| Monitoring well || || || || || || || || || || || || || || || || || || || || | |||
|- | |||
| Vertical perforated pipe diameter || || 100-150 mm || 100-150 mm || || 100-150 mm || 100-150 mm || || || || || || || || || || || || || || | |||
|- | |||
| Underdrain || || || || || || || || || || || || || || || || || || || || | |||
|- | |||
| Required when infiltration rate || || < 15 mm/hr || || || < 15 mm/hr || || < 13 mm/hr || || || || || || || || || || || || || | |||
|- | |||
| 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 || || || || | |||
|- | |||
| Depth above the gravel storage layer || || 100 mm || || || 100 mm || || || || || || || || || || || || || || || | |||
|- | |||
| 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 || || || || || || || | |||
|- | |||
| and the downstream stream drain invert || || || || || || || || || || || || || || || || || || || || | |||
|- | |||
| 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 || || || || | |||
|- | |||
| Maximum recommended || || 0.8 hectare || || || || 0.8 hectare || || || || || || || || || || || || || || | |||
|- | |- | ||
| Setback from building Foundation(m) || || 4 || || || 4 || 4 || 3 (clay), 5 (heavy clay) || || || || || || || || || see table 3 below || || || || | |||
|- | |- | ||
| (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 | |||
|- | |- | ||
| Contributing Slope (%) || || 1-5 || || || || 1-5 || || || || || || || || || || >1 % and < 33% || || || || | |||
|- | |- | ||
| Slope of the surface, % || || || || || || || || || || || || || || || || <= 1% || || || || | |||
|- | |- | ||
| Water table depth || || min. 1.0 m || || || || min. 1.0 m || > 1.8 || || || || || || || || || 3 ft. || || || || | |||
|- | |- | ||
| Outlet || || || min. 100 mm above the bottom of the facility || || || || || || || || || || || || || Difference in elevation between inflow and outflow =4-6 ft (when underdrain is used) || || || || | |||
|- | |- | ||
| Maximum ponding depth above the filter bed surface || || 150-250 mm || || || 250 mm || 150-250 mm || 350 mm || || || || || || || || || 18 inch || || || || | |||
|- | |- | ||
| Facilties receiving road runoff are not located within time of travel || || 2 || || || || 2 || || || || || || || || || || || || || || | |||
|- | |- | ||
| wellhead protection areas, year || || || || || || || || || || || || || || || || || || || || | |||
| | |||
|- | |- | ||
| Drainage time of ponded water after the end of storm event , hr || || || || || || 24 (48 recommd.) || < 48 (2 yr. design) || || || || || || || || || Max. 48 hr. || || || || | |||
|- | |- | ||
| Inlet design for non-point source-grass filter buffer, m || || || || || || || 0.5-3.0 || || || || || || || || || || || || || | |||
|- | |- | ||
| 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 || || || || || | |||
|- | |- | ||
| || || || || || || || || || || || || || || || || || || || || | |||
|} | |} |
Revision as of 19:20, 20 September 2017
CANADA | United States | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |
Filter media depth (m) | ||||||||||||||||||||
Depth | 1-1.25 | 1-1.25 | 1-1.25 | 0.5-1.0 | >= 2.5 ft. | |||||||||||||||
Composition | Topsoil | 30-50% | 20-30 % | 8-20 % | Table 1 & 2 (below) | |||||||||||||||
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) | ||
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 % | |||||||
gravel | 15% | |||||||||||||||||||
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% | ||
P-index value | 10-30 ppm | 12-30 ppm | 10-30 ppm | 10-30 | < 15 | |||||||||||||||
Soluble salts | < 2.0 mmhos/cm | |||||||||||||||||||
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 | |||||||||
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 | |||||||||
Phosphorus | 10-30 ppm | Table 1 & 2 (below) | ||||||||||||||||||
Infiltration rate | > 25 mm/hr | > 25 mm/hr | > 25 mm/hr | > 25 mm/hr | ||||||||||||||||
Surface resistance | <= 110 PSI | |||||||||||||||||||
Sub-surface resistance | <= 260 PSI | |||||||||||||||||||
Saturated hydraulic conductivity , mm/hr | 25 min. | |||||||||||||||||||
P-Content | 10-30 | < 15 ppm | 7-23 mg/kg | |||||||||||||||||
Compost (optional) | 15-25% | 15% | ||||||||||||||||||
Gravel storage | ||||||||||||||||||||
Void space ratio | 0.4 | 0.4 | ||||||||||||||||||
Depth | min. 300 mm | min. 300 mm | min. 300 mm | |||||||||||||||||
Diameter(clear stone) | 50 mm | 50 mm | 50 mm | |||||||||||||||||
Pea gravel choking layer depth (mm) | 100 | 100 | 100 | |||||||||||||||||
diameter (mm) | 3-10 | 3-10 | ||||||||||||||||||
Mulch | ||||||||||||||||||||
Depth | 75 mm | <=75 mm | 75 mm | 75 mm | 70-80 | |||||||||||||||
Overflow | ||||||||||||||||||||
Overflow invert above the filter bed surface | 150-250 | <= 250 mm | ||||||||||||||||||
Monitoring well | ||||||||||||||||||||
Vertical perforated pipe diameter | 100-150 mm | 100-150 mm | 100-150 mm | 100-150 mm | ||||||||||||||||
Underdrain | ||||||||||||||||||||
Required when infiltration rate | < 15 mm/hr | < 15 mm/hr | < 13 mm/hr | |||||||||||||||||
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 | ||||||||||||||
Depth above the gravel storage layer | 100 mm | 100 mm | ||||||||||||||||||
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 | |||||||||||||||||
and the downstream stream drain invert | ||||||||||||||||||||
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 | ||||||||||||||||
Maximum recommended | 0.8 hectare | 0.8 hectare | ||||||||||||||||||
Setback from building Foundation(m) | 4 | 4 | 4 | 3 (clay), 5 (heavy clay) | see table 3 below | |||||||||||||||
(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 | |||||||||
Contributing Slope (%) | 1-5 | 1-5 | >1 % and < 33% | |||||||||||||||||
Slope of the surface, % | <= 1% | |||||||||||||||||||
Water table depth | min. 1.0 m | min. 1.0 m | > 1.8 | 3 ft. | ||||||||||||||||
Outlet | min. 100 mm above the bottom of the facility | Difference in elevation between inflow and outflow =4-6 ft (when underdrain is used) | ||||||||||||||||||
Maximum ponding depth above the filter bed surface | 150-250 mm | 250 mm | 150-250 mm | 350 mm | 18 inch | |||||||||||||||
Facilties receiving road runoff are not located within time of travel | 2 | 2 | ||||||||||||||||||
wellhead protection areas, year | ||||||||||||||||||||
Drainage time of ponded water after the end of storm event , hr | 24 (48 recommd.) | < 48 (2 yr. design) | Max. 48 hr. | |||||||||||||||||
Inlet design for non-point source-grass filter buffer, m | 0.5-3.0 | |||||||||||||||||||
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 | |||||||||||||||||||