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  • Overview for swales
    ...ndex.html permit]. If used in combination with other practices, credit for combined stormwater treatment can be given as described in Part III.C.4 of the permi ...potentially more stringent design requirements may apply for a particular infiltration facility, depending on where it is situated both jurisdictionally and withi
    11 KB (1,662 words) - 19:42, 11 August 2022
  • Case study for using P8 to meet TMDL permit requirements
    ...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
    24 KB (3,840 words) - 15:58, 12 January 2023
  • Questions and answers January 9 2018 webinar
    *If you use less compost aren't you dramatically effecting the infiltration rates and potentially increasing runoff or volume of water that can be stor ...g as there is enough compost/organic matter to support the vegetation, the infiltration capacity should be maintained.
    10 KB (1,607 words) - 14:28, 6 December 2022
  • Overview for dry swale (grass swale)
    ...on''']</span>, ([[Design infiltration rates|A or B soils]]) are considered infiltration practices. Dry swales are designed to prevent standing water. Dry swales ty ...iteria '''Water Quality Volume''']</span> is diverted to the filtration or infiltration practice. In any case, the practice may be applied as part of a stormwater
    23 KB (3,441 words) - 02:41, 15 December 2022
  • Green Infrastructure benefits of infiltration practices
    ...t for downstream lakes, rivers, and ponds. Depending on design, stormwater infiltration practices can be a key component of <span title="Green Infrastructure refer Some of the more common infiltration practices include
    31 KB (4,224 words) - 19:32, 31 January 2023
  • Overview for pretreatment vegetated filter strips
    ...trips provide limited (due to size) volume reduction, peak flow reduction, infiltration, and biological treatment. Stormwater management processes not provided in ...trips provide limited (due to size) volume reduction, peak flow reduction, infiltration, and biological treatment. Stormwater management processes not provided in
    17 KB (2,380 words) - 18:39, 13 December 2022
  • Definitions for pretreatment
    ...measures as ponding, street sweeping, filtration through a rain garden and infiltration to a gravel trench. :To see the above pages as a single page, [[Pretreatment practices combined single page|link here]]
    6 KB (837 words) - 23:43, 5 December 2022
  • Overview for filtration
    ...r native perennial grasses. Dry swales may be constructed as filtration or infiltration practices, depending on soils."> [https://stormwater.pca.state.mn.us/index. ...a simplistic, site-integrated design that provides opportunity for runoff infiltration, filtration, storage, and water uptake by vegetation. Bioretention areas ar
    17 KB (2,515 words) - 20:06, 22 November 2022
  • Requirements, recommendations and information for using permeable pavement BMPs in the MIDS calculator
    ...d volume and pollutant credits. The USER should consider selecting a lower infiltration rate if the subsoil is compacted. ...ue from the values in the predefined selection list. The maximum allowable infiltration rate is 1.63 inches per hour.
    20 KB (3,173 words) - 18:54, 23 November 2022
  • Recommendations and guidance for utilizing the MPCA Simple Estimator to meet TMDL permit requirements
    ...amount of precipitation received. It is a larger value for areas with low infiltration and high runoff (pavement, steep gradient), and lower for permeable, well v ...stimator does not require any BMP dimensions (e.g., permanent pool volume, infiltration rate, etc.) and assumes that BMPs are sized correctly for the tributary are
    28 KB (4,348 words) - 19:45, 14 February 2023
  • Stormwater management for lake protection and restoration
    ...in areas with high percentages of impervious cover and soils that have low infiltration rates. Loehr (1974) and Lin (2004) provide reviews of phosphorus export fro ...ration practices such as [[Infiltration trench|infiltration trenches]] and infiltration basins, [[Stormwater ponds|stormwater ponds]] and [[Stormwater wetlands|sto
    17 KB (2,478 words) - 21:20, 20 February 2023
  • Requirements, recommendations and information for using bioretention with no underdrain BMPs in the MIDS calculator
    ...t value from those in the predefined selection list. The maximum allowable infiltration rate is 1.63 inches per hour. ...ters and other receiving waters |trout stream]]. The calculator uses the ''Infiltration rate of underlying soils'' and the ''Overflow depth (D<sub>O</sub>)'' to ch
    23 KB (3,549 words) - 18:50, 23 November 2022
  • Stormwater preatreatment selection information
    *[[Hydrodynamic separator tables combined|Link to tables with information on hydrodynamic separators]] ...ators. To see all tables on a single page, [[Hydrodynamic separator tables combined|link here]]. To see the information in a single spreadsheet click on the fo
    26 KB (3,853 words) - 18:47, 2 February 2023
  • Overview and methods of pretreatment
    ...management practice (BMP) application. In fact, in many applications (e.g. infiltration, stormwater ponds), the BMP would not be properly used if pretreatment is i ...ll preserve their long-term functionality, particularly for filtration and infiltration BMPs. Pretreatment reduces maintenance and prolongs the lifespan of structu
    22 KB (3,030 words) - 22:32, 28 January 2023
  • Overview for high-gradient stormwater step-pool swale
    ...r native perennial grasses. Dry swales may be constructed as filtration or infiltration practices, depending on soils."> [https://stormwater.pca.state.mn.us/index. ...mn.us/index.php?title=Stormwater_infiltration_Best_Management_Practices '''infiltration''']</span> practices)
    25 KB (3,698 words) - 02:39, 15 December 2022
  • Requirements, recommendations and information for using stormwater disconnection (impervious disconnection) BMPs in the MIDS calculator
    ...100 feet flows have a tendency to channelize reducing the effectiveness of infiltration. The user enters the value in square feet. ...100 feet flows have a tendency to channelize reducing the effectiveness of infiltration. The user enters the value in square feet.|alert-warning}}
    14 KB (2,160 words) - 13:34, 29 January 2023
  • Overview for sand (media) filters
    ...s of 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 ...in bioretention practices. The media is typically designed to have a rapid infiltration rate, attenuate pollutants, and allow for plant growth."> [https://stormwat
    13 KB (1,897 words) - 13:47, 29 December 2022
  • Overview for wet swale (wetland channel)
    ...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}}
    14 KB (2,128 words) - 19:42, 27 December 2022
  • Check dams for stormwater swales
    ...wales that incorporate check dams into their design fall under either the “Infiltration Systems" category described in Section 16 of the MPCA CGP or the "Filtratio {{alert|Rock check dams are not suitable for situations where enhanced infiltration is desired and cannot be used to achieve the water quality volume when requ
    21 KB (3,314 words) - 15:20, 11 January 2023
  • Integrated stormwater management
    ...introduce creative or innovative solutions, such as supplemental sub-grade infiltration, proprietary filters or wetland polishing. Note that these can also be part <p>The term volume reduction can be easily confused with infiltration. One does not, however, necessarily equate to the other. There are many add
    23 KB (3,455 words) - 12:36, 14 February 2023

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