{{alert|The following table is generally applicable to filtration BMPs and not specifically to swales. Some items may not be applicable.|aler
...worksheets will allow designers to more accurately estimate the cost of a filtration BMP.
<font size=3>'''Infiltration and filtration bmp<sup>1</sup> design restrictions for special waters and watersheds. See
Link to this [[Infiltration and filtration bmp design restrictions for special waters and watersheds|table]]
<font size=3>'''Pollutant removal percentages for filtration BMPs'''.</font size><br>
Link to this [[Pollutant removal percentages for filtration BMPs|table]]
.... To see all tables on a single page, [[Other water quality devices tables combined|link here]]. To see the information in a single spreadsheet click on the fo
**[[Pretreatment - Filtration devices and practices]]
...n the treatment train, or built-in additional pretreatment mechanisms. The filtration methods are widely varied from biological to mechanical. They seek to remov
Some filtration pretreatment methods require a larger footprint than other pretreatment opt
...otential for iron loss or plugging in low oxygen or persistently inundated filtration practices.
...article]].''' Note: Due to an unresolved bug, when viewing a formula in a combined article, the math markup (used for equations) is displayed. Please ignore t
...'''Typical pollutant effluent concentrations, in milligrams per liter, for filtration BMPs'''.</font size><br>
Link to this [[Pollutant concentrations1 for filtration BMPs|table]]
...these practices out into separate chapters. For now, they continue to be combined into single pages shown below. NOTE that we have included links to images
*[[Overview for filtration]]
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
...see all tables on a single page, [[Screening and straining devices tables combined|link here]].
**[[Pretreatment - Filtration devices and practices]]
Pretreatment is a required part of infiltration and filtration practices covered under the Minnesota Construction Stormwater General Permi
...tle particulates before the stormwater discharges into the infiltration or filtration system.|alert-danger}}
...roprietary example of a pretreatment (isolator) row on underground storage/filtration system by StormTech. The row acts as a sacrificial first row to capture the
...ent mechanism. These can provide an additional level of treatment such as filtration, skimming (in addition to settling or screening), chemical treatment/sorpti
...title="a pre-fabricated stormwater treatment structure utilizing settling, filtration, absorptive/adsorptive materials, vortex separation, vegetative components,
...luble pollutants such as dissolved phosphorus, chloride, and nitrate."> '''filtration'''</span> or screening. These units are typically installed underground, fr
...treat runoff, including such diverse measures as ponding, street sweeping, filtration through a rain garden and infiltration to a gravel trench.
*Media filter - Filtration of stormwater through a variety of different filtering materials whose purp
...oxygen or persistently inundated filtration practices. Here iron-enhanced filtration is limited to two types:
...trusion or tailwater effects. Because the primary treatment mechanisms are filtration and chemical binding and not volume reduction, vegetating the filter is not
Sand filters, also called media filters or filtration basins, are a stormwater quality treatment system that works by capturing s
...he permit does apply. Also, although it is expected that in many cases the filtration practice will be used in combination with other practices, standards are de
...such as turf or native perennial grasses. Dry swales may be constructed as filtration or infiltration practices, depending on soils."> [https://stormwater.pca.st
...site-integrated design that provides opportunity for runoff infiltration, filtration, storage, and water uptake by vegetation. Bioretention areas are suitable s
...of engineered media mixes. The mixes are divided into those applicable for filtration practices and those applicable for infiltration practices. The page include
==Media mixes for filtration practices==
...water_preatreatment_selection_information#Filtration_devices_and_practices Filtration devices and practices]
*[[Hydrodynamic separator tables combined|Link to tables with information on hydrodynamic separators]]
...s received by the BMP from its direct watershed, from upstream BMPs, and a combined value of the two. Also included in the summary are the volume and pollutant
...and maintenance of filtration|maintained]] according to specifications for filtration systems.
...ent processes not provided in pretreatment vegetated filter strips include filtration and sorption."> [https://stormwater.pca.state.mn.us/index.php?title=Overvie
...ent processes not provided in pretreatment vegetated filter strips include filtration and sorption.
...ent processes not provided in pretreatment vegetated filter strips include filtration and sorption."> [https://stormwater.pca.state.mn.us/index.php?title=Overvie
...trate."> [https://stormwater.pca.state.mn.us/index.php?title=Filtration '''filtration''']</span> BMPs having that have the greatest need for removal of solids pr
{{alert|Filtration practices can be an important tool for detention of stormwater runoff and t
...?title=Glossary#E evapotranspiration] occurs in most filtration practices. Filtration [https://stormwater.pca.state.mn.us/index.php?title=Glossary#B best managem
...d in the MPCA CGP. If used in combination with other practices, credit for combined stormwater treatment can be given. Due to the statewide prevalence of the M
{{:Infiltration and filtration bmp design restrictions for special waters and watersheds}}
...water BMP(s) will preserve their long-term functionality, particularly for filtration and infiltration BMPs. Pretreatment reduces maintenance and prolongs the li
...of Minnesota’s NPDES/SDS Construction Stormwater (CSW) General Permit for filtration/infiltration water quality BMPs (section III.D.1.d). Pretreatment practices
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
...ds received by the BMP from its direct watershed, from upstream BMPs and a combined value of the two. Also included in the summary are the volume and pollutant
...enance of filtration|properly maintained]] according to specifications for filtration systems.
...trate."> [https://stormwater.pca.state.mn.us/index.php?title=Filtration '''filtration''']</span>. Dry swales with in-situ soils capable of <span title="Infiltrat
...ter_quality_criteria '''Water Quality Volume''']</span> is diverted to the filtration or infiltration practice. In any case, the practice may be applied as part
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
...s used in a treatment train include [[Bioretention|bioretention]] devices, filtration practices such as [[Dry swale (Grass swale)|dry swales]], infiltration prac
*Filtration and settling
...ds received by the BMP from its direct watershed, from upstream BMPs and a combined value of the two. Also included in the summary, are the volume and pollutan
..._and_maintenance_of_filtration maintained] according to specifications for filtration systems.
...such as turf or native perennial grasses. Dry swales may be constructed as filtration or infiltration practices, depending on soils."> [https://stormwater.pca.st
...trate."> [https://stormwater.pca.state.mn.us/index.php?title=Filtration '''filtration''']</span> or <span title="Infiltration Best Management Practices (BMPs) tr
...velopment hydrology. Retrofits such as [[Bioretention|rain gardens]] and [[Filtration|swales]] are versatile because they can be constructed in small areas and e
*reduce runoff volumes to combined sewers;
...ey-Purgatory-Bluff Creek and Nine Mile Creek Watersheds] (MPCA, 2018) is a combined TMDL document which developed total phosphorus (TP), total suspended solids
...ual MS4, rather than combining the WLAs assigned to all MS4s into a single combined (categorical) WLA. The TMDLs developed in this draft TMDL document include
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
...ds received by the BMP from its direct watershed, from upstream BMPs and a combined value of the two. Also included in the summary, are the volume and pollutan
...ctions both through infiltration and through filtration. To determine the filtration credits we recommend treating this BMP as a [[Vegetated filter strips|filte
...iltration CADD images in a combined pdf: [[File:All filtration cadd images combined 2.pdf]]'''
...design guidance is the fact that many design elements of infiltration and filtration systems can minimize the maintenance burden and maintain pollutant removal
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
...r of the state); and poor soils with close proximity to bedrock. These all combined to make design and implementation of temporary and permanent stormwater man
...s at the site, a compost bioswale system was designed for water retention, filtration and nutrient capture. This bioswale was developed for water quality treatme
...ltration Systems" category described in Section 16 of the MPCA CGP or the "Filtration Systems" category described in Section 17 of the MPCA CGP.
...stormwater_permit Stormwater General Permit] (CSW permit), infiltration or filtration systems must provide a water quality volume (V<sub>wq</sub>) of one (1) inc
...trate."> [https://stormwater.pca.state.mn.us/index.php?title=Filtration '''filtration''']</span>, storage, and water uptake by vegetation.
...s'' of the permit. If used in combination with other practices, credit for combined stormwater treatment can be given. Due to the statewide prevalence of the M
**[[Pretreatment - Filtration devices and practices]]
:To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
The combined process of evaporating and/or transpiring (vegetative uptake and release of
...ction system. This option results in some net reduction in volume and adds filtration as a supplemental treatment. Many bioretention treatment techniques take ad
...site-integrated design that provides opportunity for runoff infiltration, filtration, storage, and water uptake by vegetation.
...ms) of the permit. If used in combination with other practices, credit for combined stormwater treatment can be given. Due to the statewide prevalence of the M