Changes

Since Filtration MTDs contain filters that restrict flow rates, they are normally designed for much lower hydraulic loading rates than [[Oil and Grit Separator|Oil-Grit Separator MTDs]] and have longer detention times. Flow restriction occurs due to the small pore size openings of filters and the [[clogging]] of pores and/or the formation of films either on the surface of the filter or within the filter matrix filter.  For this reason, inspection and maintenance intervals for Filtration MTDs are normally shorter than for [[Oil and Grit Separator|OGS MTDs]]. The method of maintenance typically involves sediment removal with a hydro vacuum truck as well as filter cleaning or replacement.  

Since Filtration MTDs contain filters that restrict flow rates, they are normally designed for much lower hydraulic loading rates than [[Oil and Grit Separator|Oil-Grit Separator MTDs]] and have longer detention times. Flow restriction occurs due to the small pore size openings of filters and the [[clogging]] of pores and/or the formation of films either on the surface of the filter or within the filter matrix filter.  For this reason, inspection and maintenance intervals for Filtration MTDs are normally shorter than for [[Oil and Grit Separator|OGS MTDs]]. The method of maintenance typically involves sediment removal with a hydro vacuum truck as well as filter cleaning or replacement.  

Further guidance on how the data and information generated from verified laboratory testing of OGS technologies should be interpreted and factored into regulatory agency approvals and procurement decisions for stormwater management is provided in this publicly available specification [https://sustainabletechnologies.ca/app/uploads/2023/07/SETV-Guidance-PAS-2023-07-27-English.pdf '''Guidance on the Use and Application of Results from

Further guidance on how the data and information generated from verified laboratory testing of OGS technologies should be interpreted and factored into regulatory agency approvals and procurement decisions for stormwater management is provided in this publicly available specification [https://sustainabletechnologies.ca/app/uploads/2023/07/SETV-Guidance-PAS-2023-07-27-English.pdf '''Guidance on the Use and Application of Results from Verified Laboratory and Field Testing for Stormwater Manufactured Treatment Devices'''], developed by TRCA and the [https://www.scc.ca/ Standards Council of Canada] that addresses both OGS and Filtration MTDs.

Verified Laboratory and Field Testing for Stormwater Manufactured Treatment Devices'''], developed by TRCA and the [https://www.scc.ca/ Standards Council of Canada] that addresses both OGS and Filtration MTDs.

==Testing and Verification==

==Testing and Verification==