Changes

Please see below a profile view of an infiltration chamber installed below a parking lot in a shopping centre development in Brampton, Ontario. The stormwater chamber system receives roof, road and parking lot runoff from a large drainage area that then drains to a receiving waterbody. The system was designed to provide temporary storage and controlled release of runoff from storms to minimize impacts to the receiving waterbody (elevated water temperatures, higher velocity flows, potential for elevated flood conditions, etc.). A 0.3m deep gravel bed with no outlet below a portion of the chamber area provides additional water storage in the event of a large or prolonged storm/rainfall event to provide better retention of sediment and the means to evaluate whether or not substantial infiltration occurs. Orifice flow restricting plates mounted on the outlets of each manhole cause stormwater to back up into the chambers and contributing storm sewers so that when flow into the manhole exceeds the maximum flow rate of the orifice plate, stormwater backs up into the chambers safely.

Please see below a profile view of an infiltration chamber installed below a parking lot in a shopping centre development in Brampton, Ontario. The stormwater chamber system receives roof, road and parking lot runoff from a large drainage area that then drains to a receiving waterbody. The system was designed to provide temporary storage and controlled release of runoff from storms to minimize impacts to the receiving waterbody (elevated water temperatures, higher velocity flows, potential for elevated flood conditions, etc.). A 0.3m deep gravel bed with no outlet below a portion of the chamber area provides additional water storage in the event of a large or prolonged storm/rainfall event to provide better retention of sediment and the means to evaluate whether or not substantial infiltration occurs. Orifice flow restricting plates mounted on the outlets of each manhole cause stormwater to back up into the chambers and contributing storm sewers so that when flow into the manhole exceeds the maximum flow rate of the orifice plate, stormwater backs up into the chambers safely.

Drawings are from STEP's, [https://sustainabletechnologies.ca/app/uploads/2015/04/UndergroundInfiltrationSystems_TechBrief_April2015.pdf Technical Brief - Evaluation of Underground Stormwater Infiltration Systems document]. The drawing was adapted from Counterpoint Engineering - Bramport Commercial Development, City of Brampton, Airport Road and Bovaird Drive – Site Servicing Plan Drawing No. SW-S1. Project No. 04160. May 7, 2007. Vaughan, ON.

Drawings are from STEP's, [https://sustainabletechnologies.ca/app/uploads/2015/04/UndergroundInfiltrationSystems_TechBrief_April2015.pdf Technical Brief - Evaluation of Underground Stormwater Infiltration Systems document].<ref>https://sustainabletechnologies.ca/app/uploads/2015/04/UndergroundInfiltrationSystems_TechBrief_April2015.pdf </ref> The drawing was adapted from ''Counterpoint Engineering - Bramport Commercial Development, City of Brampton, Airport Road and Bovaird Drive – Site Servicing Plan Drawing No. SW-S1. Project No. 04160. May 7, 2007. Vaughan, ON''. For further details about this cross section drawing please visit the link.

<ref>https://sustainabletechnologies.ca/app/uploads/2015/04/UndergroundInfiltrationSystems_TechBrief_April2015.pdf </ref>. For further details about this cross section drawing please visit the link.

[[File:Infiltration chamber profile.PNG|1100px]]

[[File:Infiltration chamber profile.PNG|1100px]]

Please see below a plan and profile view of a rain garden, which possesses full infiltration and bioretention functions. In the plan view, note that the contributing area has water coming from both the building's roof, and paved areas, along with the driveway and directed towards the lowest area of the property, where the rain garden is located. This allows the feature to collect and to easily absorb rain and surface water into the ground on homeowners/businesses' properties. The installation also includes a pretreatment rock/concrete forebay to limit erosion and reduce higher velocity flows entering the rain garden, along with mulch, filter media and various planting zones with specific vegetation types that are best suited for these areas within the feature to assist in infiltration and removal of contaminants.

Please see below a plan and profile view of a rain garden, which possesses full infiltration and bioretention functions. In the plan view, note that the contributing area has water coming from both the building's roof, and paved areas, along with the driveway and directed towards the lowest area of the property, where the rain garden is located. This allows the feature to collect and to easily absorb rain and surface water into the ground on homeowners/businesses' properties. The installation also includes a pretreatment rock/concrete forebay to limit erosion and reduce higher velocity flows entering the rain garden, along with mulch, filter media and various planting zones with specific vegetation types that are best suited for these areas within the feature to assist in infiltration and removal of contaminants.

Drawings are from the [https://www.cityofvancouver.us/publicworks/page/surface-waterstormwater-design-construction-requirements City of Vancouver's Surface Water/Stormwater Design & Construction Requirements] document. For further details about these cross section drawings please visit the link.

Drawings are from the [https://www.cityofvancouver.us/publicworks/page/surface-waterstormwater-design-construction-requirements City of Vancouver's Surface Water/Stormwater Design & Construction Requirements] document.<ref>https://www.cityofvancouver.us/publicworks/page/surface-waterstormwater-design-construction-requirements</ref> For further details about these cross section drawings please visit the link.

*[https://www.pwdplanreview.org/upload/pdf/PWD_Stormwater_Details_Porous_Pavement.dwg Permeable paving] by Philly Water

*[https://www.pwdplanreview.org/upload/pdf/PWD_Stormwater_Details_Porous_Pavement.dwg Permeable paving] by Philly Water

*[https://www.pwdplanreview.org/upload/pdf/PWD_Stormwater_Details_Subsurface_Infil_Basin.dwg Pipe-in-stone infiltration] by Philly Water

*[https://www.pwdplanreview.org/upload/pdf/PWD_Stormwater_Details_Subsurface_Infil_Basin.dwg Pipe-in-stone infiltration] by Philly Water

==Proprietary==

==Proprietary==

*[http://www.deeproot.com/products/silva-cell/resources.html Soil cells] by Silvacell

*[http://www.deeproot.com/products/silva-cell/resources.html Soil cells] by Silvacell

*[https://www.hydro-int.com/en/resources/first-defense-dwg-drawings pretreatment] by Hydro International

*[https://www.hydro-int.com/en/resources/first-defense-dwg-drawings pretreatment] by Hydro International