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Line 90: − + − + − + − + + + + + + + + + + + + + + + − This article is particularly heavy on proprietary systems and information. Please inform us of any omissions or broken links using the box below:+
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[[File:Oil-grit separator USGS 2002.png|thumb|450pc|Example oil-grit separator USGS 2002 (Wikimedia commons)]]
[[File:Sediment pad.JPG|thumb|650px|This non-proprietary pre-treatment device, known as a "Sediment Pad" that is used by the City of Toronto to capture coarse sediment, trash and debris in runoff before water drains into bioretention or other similar green stormwater infrastructure practices. Centralizing sediment and debris capture in a small area near the inlet to the [[bioretention]] feature helps simplify maintenance (City of Toronto, 2021<ref>City of Toronto. 2021. Curb Cut Inlet with Sediment Pad – Layout and Section. ENGINEERING & CONSTRUCTION SERVICES STANDARD DRAWING. Accessed. https://www.toronto.ca/wp-content/uploads/2021/08/9598-ecs-specs-gi-dwgs-T-850.102-Rev0-Sep2021.pdf</ref>.]]
Pretreatment devices may be constructed in close association association with one or more [[inlets]]. Different configurations of each exist to accommodate any design.
Pretreatment devices may be constructed in close association association with one or more [[inlets]]. Different configurations of each exist to accommodate any design.
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[[File:Sediment pad Toronto.JPG|thumb|450px|Another example of the City of Toronto's non-proprietary pre-treatment device, known as a "Sediment Pad" shown being used at the curb [[inlet]] of a [[bioretention]] cell on Danforth Av. to capture coarse sediment, trash and debris in influent entering the BMP.]]
==Overland sheet flow==
==Overland sheet flow==
The following pretreatement features are recommended where surface sheet flow is being directed to a BMP (e.g. a [[Bioretention cells|bioretention cell]]) receiving flow from the edge of an impermeable surface such as an asphalt parking lot or a paved plaza:
The following pretreatement features are recommended where surface sheet flow is being directed to a BMP (e.g. a [[Bioretention cells|bioretention cell]]) receiving flow from the edge of an impermeable surface such as an asphalt parking lot or a paved plaza:
* [[Stone]] and [[geotextile]] filter: A shallow excavation on the filter media bed surface at the inlet, lined with geotextile and rip rap or decorative stone cover; and,
* [[Stone]] and [[geotextile]] filter: A shallow excavation on the filter media bed surface at the inlet, lined with geotextile and rip rap or decorative stone cover; and,
*[[Sand filters]] (well suited for underground [[infiltration]]);
*[[Sand filters]] (well suited for underground [[infiltration]]);
*Concrete sump pretreatment device. [https://acfenvironmental.com/products/stormwater-management/filtration/rain-guardian/ Rain Guardian] is one example of a proprietary sump device.
*Concrete sump pretreatment device. [https://rainguardian.biz/ Rain Guardian] is one example of a proprietary sump device.
==Concentrated underground flow==
==Concentrated underground flow==
|Collects and settles debris as overland flow passes through sump to treatment practice.||
|Collects and settles debris as overland flow passes through sump to treatment practice.||
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*Catch basin or other non-proprietary pre-fabricated inlet structure sump
*Catch basin or other non-proprietary pre-fabricated inlet structure sump. Small forebays may also be used for treatments systems receiving concentrated overland flow’
*[https://www.rainguardian.biz/ Rain Guardian]
*[https://www.rainguardian.biz/ Rain Guardian]
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|Great for improving water quality in retrofit situations
|Great for improving water quality in retrofit situations
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*[http://www.cbshield.com/ CB Shield]
*[https://etvcanada.ca/wp-content/uploads/2019/10/ISO-14034-ETV-Verification-Renewal-CB-Shield_2019-2022.pdf CB Shield]
*[https://www.enviropod.com/products/littatrap Littatrap]
*[https://etvcanada.ca/wp-content/uploads/2022/03/ISO-14034-ETV-VS-ENVIROBASIN_2021-2024.pdf Littatrap (Now, EnviroBasin™)]
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*[http://www.bmpinc.com/ Snout]
*[http://www.bmpinc.com/ Snout]
|The shape causes rapidly flowing water to form a vortex which forces the larger, heavier particles are outwards and downwards into a lower chamber. Floating debris, oils and grease are trapped behind a baffle or in small tank area, towards the top of the main vortex chamber
|The shape causes rapidly flowing water to form a vortex which forces the larger, heavier particles are outwards and downwards into a lower chamber. Floating debris, oils and grease are trapped behind a baffle or in small tank area, towards the top of the main vortex chamber
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*[http://www.conteches.com/Products/Stormwater-Management/Treatment/CDS.aspx CDS]
*[https://etvcanada.ca/wp-content/uploads/2023/03/ISO-14034-ETV-Verification-Contech-CDS_2023-2026.pdf CDS]
*[https://www.hydro-int.com/en/products/downstream-defender Downstream Defender]
*[https://www.verifiglobal.com/media/tsmpnsdh/vg-2019-09-01-hi-downstream-defender-verification-statement-re-issue-v2-for-posting-2022-09-15.pdf?la=da Downstream Defender]
*[https://www.hydro-int.com/en/products/first-defense First Defense]
*[https://www.verifiglobal.com/media/xr3he5i2/vg-2018-10-01-hi-fdhc-final-for-posting-2018-10-15-rev-2019-02-01.pdf First Defense]
*[http://www.hydroworks.com/hydrostorm.html Hydrostorm]
*[https://etvcanada.ca/wp-content/uploads/2021/05/ISO14034-VS_Hydroworks_HS_2021-2024.pdf Hydrostorm]
*[https://biocleanenvironmental.com/sciclone-separator SCICLONE HDS]
*[https://etvcanada.ca/wp-content/uploads/2022/02/ISO14034-Verification-Statement_BioClean-SciCLONE_2022-2025.pdf SCICLONE HDS]
*[http://nextstorm.ca/en/oil-grit-separator-sdd/ SDD]
*[https://etvcanada.ca/wp-content/uploads/2022/10/ISO-14034-ETV-Verification-Statement-NEXT-SDD3_2022-2025-EN.pdf SDD]
*[http://www.imbriumsystems.com/stormwater-treatment-solutions/stormceptor-ef Stormceptor EF]
*[https://etvcanada.ca/wp-content/uploads/2020/11/ISO-14034-Verification-Statement-_Stormceptor_EF-EFO_2020-2023.pdf Stormceptor EF]
*[https://www.verifiglobal.com/media/3drliqul/verifiglobal-verification-statement-for-stormtrap-stormsettler-ogs-signed-2023-09-13.pdf StormTrap Storm Settler]
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*[http://upstreamtechnologies.us/products/safl.shtml SAFL Baffle]
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!Manhole baffles
!Manhole baffles
*[http://upstreamtechnologies.us/products/safl.shtml SAFL Baffle]
*[http://upstreamtechnologies.us/products/safl.shtml SAFL Baffle]
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!Isolated chamber row filters
!Isolated chamber row
|Separate rows at inlets, not connected by pipes to the other chambers, that isolate the bulk of sediment and associated pollutants and designed for ease of access by jet flushing cleaning equipment.
|Separate rows at inlets, not connected by pipes to the other chambers, that isolate the bulk of sediment and associated pollutants and designed for ease of access by jet flushing cleaning equipment.
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*[https://cultec.com/products/separator-row/ Cultec Separator Row]
*[https://etvcanada.ca/wp-content/uploads/2022/03/ISO-ETV-VS_Cultec-Separator-Row_2021-2024_v2.pdf Cultec Separator Row]
*[https://www.verifiglobal.com/media/knubjbej/verifiglobal-verification-statement-for-stormtech-isolator-row-plus-final-2020-10-27-for-posting.pdf StormTech Isolator Row Plus®]
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*[https://www.conteches.com/Stormwater-Management/Detention-and-Infiltration/ChamberMaxx-Plastic-Chambers ChamberMaxx®]
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!Membrane filters
!Membrane filters
|Uses advanced membrane technology adapted from water treatment plants.
|Uses advanced membrane technology adapted from water treatment plants.
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*[http://www.imbriumsystems.com/stormwater-treatment-solutions/jellyfish-filter Jellyfish Filter]
*[https://etvcanada.ca/wp-content/uploads/2023/08/ISO-ETV-Verification-Statement-Imbrium-Jellyfish_2023-2026.pdf Jellyfish Filter (TARP)]
*[https://biocleanenvironmental.com/kraken-filter Kraken Filter]
*[https://etvcanada.ca/wp-content/uploads/2022/03/ISO14034-ETV-VS_Imbrium-Jellyfish-Filter_2022-2025.pdf Jellyfish Filter (TAPE)]
*[https://etvcanada.ca/wp-content/uploads/2022/09/ISO-14034-ETV-Verification-Statement-Kraken-TAPE_2022-2025.pdf Kraken Membrane Filtration (TAPE)]
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|A variety of proprietary designs and media mixes are available.
|A variety of proprietary designs and media mixes are available.
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*[http://www.imbriumsystems.com/stormwater-treatment-solutions/filterra Filterra]
*[https://etvcanada.ca/wp-content/uploads/2021/12/ISO14034-ETV-VS_Imbrium-Filterra_2021-2024.pdf Filterra]
*[https://www.adspipe.com/water-management-solutions/water-quality/filters/bayfilter-stormwater-treatment-system BayFilter]
*[https://www.verifiglobal.com/media/zoinc1we/verifiglobal-verification-statement-for-baysaver-bayfilter-final-for-posting-2018-10-29.pdf BaySaver BayFilter]
*[https://www.conteches.com/stormwater-management/treatment/stormwater-management-stormfilter StormFilter]
*[https://etvcanada.ca/wp-content/uploads/2023/06/ISO-14034-ETV-Contech-StormFilter_TAPE_2023-06-30-Final.pdf The Stormwater Management StormFilter (TAPE)]
*[https://hydro-int.com/en/products/flo-filter#dismiss-notification Up-Flo Filter]
*[https://www.verifiglobal.com/media/fl2dqtrj/vg20190601-hi-uff-verification-statement-final-amended-2-20200513-for-posting.pdf Up-Flo Filter]
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*[https://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media Sorbtive Media]
*[https://www.imbriumsystems.com/stormwater-treatment-solutions/sorbtive-media Sorbtive Media]
*[[Bioretention]] [[Filter Media]]
*[https://www.stormwatercenter.net/Assorted%20Fact%20Sheets/Tool6_Stormwater_Practices/Filtering%20Practice/Sand%20and%20Organic%20Filter%20Strip.htm Sand Filters<ref>Stormwater Manager's Resource Center. n.d. Stormwater Management Fact Sheet: Sand and Organic Filter. Accessed: https://www.stormwatercenter.net/Assorted%20Fact%20Sheets/Tool6_Stormwater_Practices/Filtering%20Practice/Sand%20and%20Organic%20Filter%20Strip.htm</ref>]
*[https://www.water-pollutionsolutions.com/gutter-guards.html Gutter Guards/Filters]
*[https://www.freshwatersystems.com/blogs/blog/types-of-downspout-filters Downspout Filters]
*[[Media filters]]
*[https://apps.ecology.wa.gov/publications/documents/2110023.pdf High Performance Soil Media Mixes<ref>Howie, D., and Lubliner, B. 2021. Guidance on using new high performance bioretention soil mixes. "Water Quality Program",
Washington State Department of Ecology. Olympia, Washington. May 2021 - Publication 21-10-023.</ref>]
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This table and page are particularly heavy on proprietary systems and information. Please inform us of any omissions or broken links using the box below:
<br>
</br>
==Gallery==
{{:Inlet sumps: Gallery}}
==References==
[[category: Pretreatment]]
[[category: Pretreatment]]