Changes

Field testing also allows for a more accurate assessment of filter performance for stormwater pollutants other than suspended solids.  These pollutants are subject to complex physical, chemical, and biological interactions that are not easy to replicate in a laboratory.   

Field testing also allows for a more accurate assessment of filter performance for stormwater pollutants other than suspended solids.  These pollutants are subject to complex physical, chemical, and biological interactions that are not easy to replicate in a laboratory.   

In Canada, the [https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf|'''Canadian Procedure for Field Testing of Filtration Manufactured Treatment Devices'''], developed by TRCA and the [https://www.scc.ca/ Standards Council of Canada] stipulates field testing requirements for Filtration MTDs.  This document was developed based on the [https://apps.ecology.wa.gov/publications/SummaryPages/1810038.html.Washington Technology Assessment Protocol – Ecology (TAPE)]. TAPE provides a robust and scientifically defensible field evaluation methodology for proprietary and non-proprietary stormwater treatment technologies that is well regarded by stormwater practitioners, having been developed and continuously updated over the past two decades through an extensive third-party expert peer review process.  

In Canada, the [https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf '''Canadian Procedure for Field Testing of Filtration Manufactured Treatment Devices'''], developed by TRCA and the [https://www.scc.ca/ Standards Council of Canada] stipulates field testing requirements for Filtration MTDs.  This document was developed based on the [https://apps.ecology.wa.gov/publications/documents/1810038.pdf Washington Technology Assessment Protocol – Ecology (TAPE)]. TAPE provides a robust and scientifically defensible field evaluation methodology for proprietary and non-proprietary stormwater treatment technologies that is well regarded by stormwater practitioners, having been developed and continuously updated over the past two decades through an extensive third-party expert peer review process.  

<span style="color:red">It should be noted that several jurisdictions in Canada do not accept filtration MTDs without field monitoring due to the aforementioned concerns, even if a lab test has been verified through the [https://etvcanada.ca/home/verify-your-technology/ ISO 14034 ETV process]</span style="color:red">.

<span style="color:red">It should be noted that several jurisdictions in Canada do not accept filtration MTDs without field monitoring due to the aforementioned concerns, even if a lab test has been verified through the [https://etvcanada.ca/home/verify-your-technology/ ISO 14034 ETV process]</span style="color:red">.

Existing ‘General Use Level Designation’ certification of Filtration MTDs through the Washington TAPE process may satisfy ETV testing requirements in Canada provided that the design of the tested unit has not changed, TAPE requirements were followed, and hydraulic laboratory testing is used only to augment, rather than replace field testing requirements.  In some cases, additional testing and data analysis may be required to support the ISO 14034 verification.  

Existing ‘General Use Level Designation’ certification of Filtration MTDs through the Washington TAPE process may satisfy ETV testing requirements in Canada provided that the design of the tested unit has not changed, TAPE requirements were followed, and hydraulic laboratory testing is used only to augment, rather than replace field testing requirements.  In some cases, additional testing and data analysis may be required to support the ISO 14034 verification.  

A list of TAPE approved Filtration MTDs with General Use Designation can be found on the Washington TAPE website, along with technical reports for each device. You can find the list of over 106+ approved devices here [https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Stormwater-permittee-guidance-resources/Emerging-stormwater-treatment-technologies#tape Emerging stormwater treatment technologies (TAPE)]. The following table on the TAPE website lists the devices that have received a use designation through the TAPE process. These use designations can be divided into three separate Use Level Designation (ULD) categories:

A list of TAPE approved Filtration MTDs with General Use Designation can be found on the Washington TAPE website, along with technical reports for each device. You can find several Filtration MTDs on the TAPE approved list of stormwater technologies here: [https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Stormwater-permittee-guidance-resources/Emerging-stormwater-treatment-technologies#tape Emerging stormwater treatment technologies (TAPE)], or click the button below:

 

{{Clickable button|[[File:Explore-archive-image-tape-322x215.jpg|125px|link=https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Stormwater-permittee-guidance-resources/Emerging-stormwater-treatment-technologies]]}}<br>

 

The following table on the TAPE website lists the devices that have received a use designation through the TAPE process. These use designations can be divided into three separate Use Level Designation (ULD) categories:

# '''General Use Level Designation (GULD'''): Known technologies whose given evaluation report showcases that they can confidently achieve Washington state Technology Assessment Protocol - Ecology's required performance goals.

# '''General Use Level Designation (GULD'''): Known technologies whose given evaluation report showcases that they can confidently achieve Washington state Technology Assessment Protocol - Ecology's required performance goals.

# '''Conditional Use Level Designation (CULD)''': These are technologies that should most likely and feasibly be able to meet stated performance goals, but the developer most conduct additional verification field testing (within a given time period) to achieve General Use Level designation.

# '''Conditional Use Level Designation (CULD)''': These are technologies that should most likely and feasibly be able to meet stated performance goals, but the developer most conduct additional verification field testing (within a given time period) to achieve General Use Level designation.

==Scaling==

==Scaling==

Appropriate scaling ensures that performance results from the model tested and verified through [https://apps.ecology.wa.gov/publications/SummaryPages/1810038.html. TAPE] and/or [https://www.iso.org/obp/ui/#iso:std:iso:14034:ed-1:v1:en ISO 14034 ETV] can be confidently applied to other model sizes for the same MTD.  Buyers should ensure to ask vendors to provide sizing data and calculations to confirm that the proposed unit is scaled appropriately.  Verifications conducted in 2023 or later will include information on unit scaling in the publicly available verification statement.

Appropriate scaling ensures that performance results from the model tested and verified through [https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Stormwater-permittee-guidance-resources/Emerging-stormwater-treatment-technologies TAPE] and/or [https://www.iso.org/obp/ui/#iso:std:iso:14034:ed-1:v1:en ISO 14034 ETV] can be confidently applied to other model sizes for the same MTD.  Buyers should ensure to ask vendors to provide sizing data and calculations to confirm that the proposed unit is scaled appropriately.  Verifications conducted in 2023 or later will include information on unit scaling in the publicly available verification statement.

   

   

The scaling rules, as stated in the [https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf Canadian Procedure for Field Testing of Filtration MTDs]<ref>Toronto and Region Conservation Authority, 2023. Canadian Procedure for Field Testing of Stormwater Filtration Manufactured Treatment Devices: A Publicly Available Specification, Toronto, Ontario. https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf</ref>, are as follows:  

The scaling rules, as stated in the [https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf Canadian Procedure for Field Testing of Filtration MTDs]<ref>Toronto and Region Conservation Authority, 2023. Canadian Procedure for Field Testing of Stormwater Filtration Manufactured Treatment Devices: A Publicly Available Specification, Toronto, Ontario. https://sustainabletechnologies.ca/app/uploads/2023/11/SETV-Filtration-MTDs-PAS-2023-11-07-English.pdf</ref>, are as follows:  

* Design TSS runoff concentration for the site or jurisdiction  

* Design TSS runoff concentration for the site or jurisdiction  

As with OGS, the Rational Method can be employed to estimate flow rates discharged to the MTD for the site in question based on historical rainfall records and the selected recording interval (≤1 hour, 15 minute preferred where available).  These flow rates are in turn used to calculate hydraulic and sediment mass loading to the selected Filtration MTD model (TRCA, 2023)<ref>TRCA. 2023. Guidance on the Use and Application of Results from Verified Laboratory and Field Testing for Stormwater Manufactured Treatment Devices. A Publicly Available Specification Prepared by: Toronto and Region Conservation Authority and Supported by: The Standards Council of Canada. June, 2023. Accessed: https://sustainabletechnologies.ca/app/uploads/2023/07/SETV-Guidance-PAS-2023-07-27-English.pdf</ref>. In general, sizing should ensure that at least 90% of the annual runoff volume during an average year is treated (i.e. does not exceed the system treatment flow rate as defined in Table 2 below).

As with OGS, the Rational Method can be employed to estimate flow rates discharged to the MTD for the site in question based on historical rainfall records and the selected recording interval (≤1 hour, 15 minute preferred where available).  These flow rates are in turn used to calculate hydraulic and sediment mass loading to the selected Filtration MTD model (TRCA, 2023)<ref>TRCA. 2023. Guidance on the Use and Application of Results from Verified Laboratory and Field Testing for Stormwater Manufactured Treatment Devices. A Publicly Available Specification Prepared by: Toronto and Region Conservation Authority and Supported by: The Standards Council of Canada. June, 2023. Accessed: https://sustainabletechnologies.ca/app/uploads/2023/07/SETV-Guidance-PAS-2023-07-27-English.pdf</ref>. In general, sizing should ensure that at least 90% of the annual runoff volume during an average year is treated (i.e. does not exceed the system treatment flow rate as defined in Table 2 below).<br>

 

[[File:CSETV.JPG|450px|thumb|The Canadian Stormwater Environmental Technology Verification project encompasses three deliverables: 1) & 2) Two separate Canadian Publicly Available Specifications for Testing and Verification of Oil and Grit Separators and Filtration Manufactured Treatment Devices. 3) A Canadian Publicly Available Specification for Guidance on how stormwater technology testing and verification procedures should be applied and how performance results should be interpreted and factored into approvals and procurement decisions.]]<br>

[[File:CSETV.JPG|450px|thumb|The Canadian Stormwater Environmental Technology Verification project encompasses three deliverables: 1) & 2) Two separate Canadian Publicly Available Specifications for Testing and Verification of Oil and Grit Separators and Filtration Manufactured Treatment Devices. 3) A Canadian Publicly Available Specification for Guidance on how stormwater technology testing and verification procedures should be applied and how performance results should be interpreted and factored into approvals and procurement decisions.]]<br>

|The maintenance sediment storage depth/volume represents the storage depth/volume available for sedimentation either on top of the media filter or within the chamber housing the filter cartridges and pretreatment chamber(s) (if applicable), as recommended by the manufacturer and confirmed through field testing.  The sump depth is constant across different unit sizes, but the sump volume increases in relation to the effective filtration area, as per the scaling rule noted above.

|The maintenance sediment storage depth/volume represents the storage depth/volume available for sedimentation either on top of the media filter or within the chamber housing the filter cartridges and pretreatment chamber(s) (if applicable), as recommended by the manufacturer and confirmed through field testing.  The sump depth is constant across different unit sizes, but the sump volume increases in relation to the effective filtration area, as per the scaling rule noted above.

|}<br>

|}<br>

The recommended maintenance frequency must adhere to the findings in the field test report or be shown through detailed design calculations to meet the approval agency maintenance interval requirements, with a buffer of safety added for uncertainties in site specific sediment, gross solids and debris loads.  MTD inspections may need to be more frequent at sites where the site runoff quality is likely to lead to faster clogging of system filtration components than was observed in the field test.  Some runoff quality parameters that may enhance [[clogging]] potential relative to the field test results may include the presence of a larger mass of finer particles (silts and clays), higher organic matter content or hydrocarbon loading, and higher bacterial loads, which can enhance the development of biofilms.

The recommended maintenance frequency must adhere to the findings in the field test report or be shown through detailed design calculations to meet the approval agency maintenance interval requirements, with a buffer of safety added for uncertainties in site specific sediment, gross solids and debris loads.  MTD inspections may need to be more frequent at sites where the site runoff quality is likely to lead to faster clogging of system filtration components than was observed in the field test.  Some runoff quality parameters that may enhance [[clogging]] potential relative to the field test results may include the presence of a larger mass of finer particles (silts and clays), higher organic matter content or hydrocarbon loading, and higher bacterial loads, which can enhance the development of biofilms.

==TAPE and/or ISO 14034 verified OGS vendor websites==

==TAPE and/or ISO 14034 verified MTD vendor websites==

#[https://www.rotondo-es.com/stormgarden-bio-filter '''StormGarden® Biofilter''' - Developed by: Rotondo Environmental Solutions]

#[https://www.rotondo-es.com/stormgarden-bio-filter '''StormGarden® Biofilter''' - Developed by: Rotondo Environmental Solutions]

#[https://oldcastleinfrastructure.com/brands/biopod/ '''BioPod™''' - Developed by: Oldcastle Infrastructure, Inc.]

#[https://oldcastleinfrastructure.com/brands/biopod/ '''BioPod™''' - Developed by: Oldcastle Infrastructure, Inc.]

#[https://www.newterra.com/technology/aquip-media-filtration-system/ '''Aquip''' - Developed by: StormwateRx, LLC.]

#[https://www.newterra.com/technology/aquip-media-filtration-system/ '''Aquip''' - Developed by: StormwateRx, LLC.]

#[https://www.conteches.com/Stormwater-Management/Biofiltration-Solutions/Filterra '''Filterra System''' - Developed by: Contech Engineered Solutions, LLC.]

#[https://www.conteches.com/Stormwater-Management/Biofiltration-Solutions/Filterra '''Filterra System''' - Developed by: Contech Engineered Solutions, LLC.]

#[https://www.adspipe.com/water-management-solutions/water-quality/greeninfrastructure/ecopure-biofilter '''EcoPure BioFilter™ 3-Cell''' - Developed by: Advanced Drainage Systems]

#[https://www.adspipe.com/water-management-solutions/water-quality/greeninfrastructure/ecopure-biofilter '''EcoPure BioFilter™ 3-Cell''' - Developed by: Advanced Drainage Systems]

#[https://www.verifiglobal.com/media/3drliqul/verifiglobal-verification-statement-for-stormtrap-stormsettler-ogs-signed-2023-09-13.pdf '''StormSettler® Oil Grit Separator''' - Developed by: StormTrap LLC.]

#[https://www.imbriumsystems.com/stormwater-treatment-solutions/stormceptor-ef '''Stormceptor''' - Developed by: Imbrium Systems]

#[http://m.rainwatermanagement.ca/ '''RWM-DM-1200 & DM-1200-OS Stormwater Systems''' - Developed by: Rainwater Management LTD.]

#[https://hydroworks.com/hydrofilter.html '''HydroFilter''' - Developed by: HydroWorks]

#[https://hydro-int.com/en/products/downstream-defender '''Hydro International Downstream Defender® OGS''' - Developed by: Hydro International.]

#[https://hydro-int.com/en/products/flo-filter '''Up-Flo Filter''' - Developed by: Hydro International Ltd.]

#[https://www.conteches.com/sciclonex '''SciCLONE™ Hydrodynamic Separator''' - Developed by: Bio Clean Environmental Inc. (A Forterra Company).]

#[https://hydro-int.com/en/products/hydro-stormscape '''Hydro StormScape''' - Developed by: Hydro International Ltd.]

#[https://hydro-int.com/en/products/first-defense '''Hydro International First Defense® OGS''' - Developed by: Hydro International]

#[https://www.enviropod.com/en-ca/introducing-envirobasin ''' EnviroBasin™''' - Developed by: EnviroPod Inc.]

#[https://hydroworks.com/hydrostorm.html '''Hydroworks® HydroStorm (HS) OGS''' - Developed by HydroWorks LLC.]

#[https://www.imbriumsystems.com/stormwater-treatment-solutions/stormceptor-ef '''Stormceptor® EF and EFO Oil-Grit Separators''' - Developed by: Imbrium Systems, Inc.]

#[https://www.conteches.com/stormwater-management/treatment/cds '''CDS Hydrodynamic Separator®''' - Developed by: CONTECH Engineered Solutions LLC]

#[http://nextstorm.ca/sdd3/ '''SDD3 Oil Grit Separator®''' - Developed by: Next Stormwater Solutions (8091200 Canada Inc.)]

===Disclaimer===

===Disclaimer===