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Stormwater pollutant removal, stormwater credits
...tion basin (with an underdrain)|Example schematic showing how pollutant load reductions are calculated for a bioretention basin with an underdrain. ...requirement in the Construction Stormwater General Permit and meeting TMDL pollutant reduction requirements. Credits can be achieved either by an individual BMP

2 KB (310 words) - 18:40, 13 December 2022
Stormwater filtration BMPs - treatment properties
<th>Pollutant Removal Mechanism</th> <th>Pollutant Removal 1</th>

3 KB (496 words) - 15:07, 2 August 2022
General MIDS Calculator result QAQC list
<td>Review routing in "Schematic" window</td> <td>Review watershed pollutant concentrations</td>

2 KB (282 words) - 14:43, 4 August 2022
Requirements, recommendations and information for using stormwater wetland as a BMP in the MIDS calculator.
...toward the performance goal or on an annual basis, it does provide annual pollutant load reductions. ...ic of watershed tab for stormwater wetland in MIDS calculator|Schematic of the Watershed tab for stormwater wetland BMP in the MIDS calculator.</fo

11 KB (1,614 words) - 01:14, 8 February 2023
Filtration Summary Table
<th>Pollutant Removal Mechanism</th> <th>Pollutant Removal 1</th>

4 KB (692 words) - 18:22, 13 December 2022
Stormwater infiltration and contaminated soils and groundwater
...ted site 2.png|300px|thumb|alt=schematic of contaminated site|Schematic for site where infiltration is not feasible. Note impermeable liner and dis ...ted site 3.jpg|300px|thumb|alt=schematic of contaminated soil|Schematic for site where infiltration is feasible. Note that contaminated soils are o

5 KB (724 words) - 01:17, 1 December 2022
Requirements, recommendations and information for using Other as a BMP in the MIDS calculator
...able to provide evidence and support for each of the stormwater volume and pollutant reduction amounts entered in the Other BMP. ...must input the following parameters to calculate the stormwater volume and pollutant load reductions associated with the BMP.

16 KB (2,582 words) - 18:55, 23 November 2022
Hydrodynamic devices
...ynamic device Courtesy of Minneapolis Public Works Department|Schematic hydrodynamic device Courtesy of Minneapolis Public Works Department</font s #Are pollutant removal tests verified by independent organizations such as USEPA, Universi

5 KB (749 words) - 22:52, 3 December 2022
Stormwater sedimentation Best Management Practices
[[File:Constructed pond 1 for credit page.jpg|thumb|200px|alt=schematic of constructed pond/wetland|Constructed ponds and constructed ...These BMPs are effective at removing total suspended solids (TSS) and any pollutant adsorbed to the solids. They are not effective in removing soluble pollutan

1 KB (188 words) - 01:08, 8 February 2023
Requirements, recommendations and information for using stormwater disconnection (impervious disconnection) BMPs in the MIDS calculator
..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP. ...tream BMP. The User must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

14 KB (2,160 words) - 13:34, 29 January 2023
Requirements, recommendations and information for using green roofs as a BMP in the MIDS calculator
..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP. ...Note that the User must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

15 KB (2,424 words) - 14:49, 11 December 2022
Requirements, recommendations and information for using stormwater pond as a BMP in the MIDS calculator
...an annual basis, it does provide annual pollutant load reductions. Annual pollutant reductions are applied in three levels based on pond design. ...0 percent for Design Level 1 ponds to match the TSS reduction. Particulate pollutant removal cannot exceed sediment removal.

17 KB (2,658 words) - 19:09, 23 November 2022
Requirements, recommendations and information for using wet swale as a BMP in the MIDS calculator
...ntaneous performance goal or on an annual basis, it does provide an annual pollutant load reduction for TSS. If runoff to the wet swale flows over a side slope ...Note that the user must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

13 KB (2,199 words) - 22:24, 23 November 2022
Requirements, recommendations and information for using sand filter as a BMP in the MIDS calculator
...toward the performance goal or on an annual basis, it does provide annual pollutant load reductions. Version 3 of the calculator provides an option to add an a ...Note that the user must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

15 KB (2,395 words) - 01:30, 23 December 2022
Calculator
[[File:Version 4 image.png|300px|thumb|alt=schematic|To download the calculator, [https://app.sharebase.com/#/folde ...raised underdrain was not receiving annual volume credits, resulting in no pollutant removal for the portion of captured water that infiltrates below the underd

5 KB (824 words) - 14:16, 2 April 2024
Requirements, recommendations and information for using permeable pavement BMPs in the MIDS calculator
...been reduced from 82 to 74 percent to match the TSS reduction. Particulate pollutant removal cannot exceed sediment removal. ..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP.

20 KB (3,173 words) - 18:54, 23 November 2022
Common pre-storage practices used in stormwater harvesting and use systems
[[File:Bioretention schematic underdrain.png|thumb|150px|alt=schematic showing biofiltration system.]]</td> <td>Filtration practices make use of porous media, mesh, or screens to trap pollutant as water flows through the filter. Filtration practices utilize sand filter

6 KB (924 words) - 19:45, 3 August 2022
Using the Minnesota Stormwater Manual and MIDS Calculator to help meet industrial stormwater permit requirements
...select, design, construct, and maintain appropriate practices and quantify pollutant reductions associated with those practices. ...displays results in terms of pounds of pollutant removed or percentage of pollutant removed.

9 KB (1,366 words) - 15:57, 5 December 2022
Requirements, recommendations and information for using infiltration basin/underground infiltration BMPs in the MIDS calculator
..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP. ...tream BMP. The User must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

22 KB (3,347 words) - 13:33, 29 January 2023
Overview of stormwater credits
...tion basin (with an underdrain)|Example schematic showing how pollutant load reductions are calculated for a bioretention basin with an underdrain. *complying with <span title="antidegradation means that no pollutant discharges or activities will be permitted if these may cause surface water

16 KB (2,431 words) - 20:34, 17 November 2022
MIDS calculator
[[File:Version 4 image.png|300px|thumb|alt=schematic|To download the calculator, [https://app.sharebase.com/#/folde ...performance goal (1.1 inches of runoff off impervious surfaces) and annual pollutant load reductions for total phosphorus (including a breakdown between particu

18 KB (2,742 words) - 14:18, 2 April 2024
Assessing the performance of iron enhanced sand filter
...on enhanced sand filter basin|Iron-enhanced sand filter basin schematic. Click on image to enlarge.]] ...ces''' (bmps) with underdrains is therefore measuring and comparing pollutant concentrations at the influent to the filter and effluent from the underdra

16 KB (2,245 words) - 15:31, 27 December 2022
Requirements, recommendations and information for using bioretention with no underdrain BMPs in the MIDS calculator
..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP. ...Note that the user must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

23 KB (3,549 words) - 18:50, 23 November 2022
When infiltration is not authorized under a stormwater permit
...ting construction stormwater permit prohibitions for infiltration. In this schematic, infiltration is not allowed at the site because it receives stormwater dis ...trating construction stormwater permit prohibitions for infiltration. This schematic describes the limitations for infiltration. Groundwater flow beneath the si

13 KB (1,914 words) - 11:24, 26 January 2023
Requirements, recommendations and information for using Harvest and re-use/cistern as a BMP in the MIDS calculator
...age device is not considered in the calculator (e.g. pond or cistern). Any pollutant associated with the water used for irrigation or non-irrigation uses is rem ..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP.

28 KB (4,546 words) - 22:47, 28 January 2023
Requirements, recommendations and information for using underground infiltration BMPs in the MIDS calculator
..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP. ...tream BMP. The User must include the BMP receiving the routed water in the Schematic or the BMP will not appear in the dropdown box.

24 KB (3,705 words) - 19:11, 23 November 2022
Quick guides for using models to meet MS4 TMDL permit requirements
...span> (Municipal Separate Storm Sewer System) <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still [[file:Screen shot of calculator.png|thumb|400px|alt=schematic showing routing of BMPs|{{pop|MIDS calculator screenshot| |Thi

18 KB (2,675 words) - 23:33, 5 December 2022
Requirements, recommendations and information for using swale side slope as a BMP in the MIDS calculator
[[File:Symbol for swale side slope.jpg|300px|thumb|alt=Schematic used as a symbol for swale side slope|Symbol for Swale side sl [[File:Swale side slope BMP parameters tab.png|300px|thumb|alt=Schematic used to show Swale side slope BMP parameters tab|Screen shot o

16 KB (2,575 words) - 13:31, 29 January 2023
Overview for permeable pavement
...ration into permeable pavement during and after a rain event.|Schematic showing the process of infiltration into permeable pavement during and afte ...utant runoff reduction goals (

15 KB (2,185 words) - 19:28, 27 December 2022
Types of swales
...filter.jpg|thumb|300px|alt=Schematic of Delaware sand filter|Schematic of Delaware sand filter]] ...ers that are typically installed along the perimeter of a parking lot (See schematic of Delaware sand filter). Parking lot runoff enters the first chamber, whic

10 KB (1,601 words) - 22:37, 23 November 2022
Overview of stormwater infiltration
...to reducing runoff volume, stormwater infiltration helps reduce stormwater pollutant loading to surface waters. Many factors influence the rate and volume of st [[File:urban hydrology.jpg|thumb|300px|alt=schematic showing effects of urbanization on hydrology|Relationship betw

16 KB (2,309 words) - 13:45, 11 February 2023
Types of filtration
...filter.jpg|thumb|300px|alt=Schematic of Delaware sand filter|Schematic of Delaware sand filter]] ...ers that are typically installed along the perimeter of a parking lot (See schematic of Delaware sand filter). Parking lot runoff enters the first chamber, whic

10 KB (1,641 words) - 22:49, 23 November 2022
Scenario for developing a stormwater treatment train for a parking lot
[[File:Parking Lot Scenario Base.PNG|thumb|300 px|alt=schematic illustrating Parking Lot Scenario Base|Site layout for a treat ...oject is to implement BMPs onsite to help control the volume of runoff and pollutant load contribution to the stream for the <span title="The volume of water th

36 KB (5,210 words) - 22:51, 12 December 2022
Recommendations and guidance for utilizing the MIDS calculator to meet TMDL permit requirements
[[file:Screen shot of calculator.png|thumb|400px|alt=schematic showing routing of BMPs|{{pop|MIDS calculator screenshot| |Thi ...(MIDS) Calculator] is a spreadsheet-based tool used to predict the annual pollutant removal performance of water quality best management practices (BMPs). This

23 KB (3,606 words) - 19:42, 14 February 2023
Scenario for developing a stormwater treatment train for an ultra-urban setting
[[File:Ultra-Urban Scenario Base.PNG|thumb|300 px|alt=schematic illustrating Ultra-Urban Scenario Base |Site layout for an ult ...alk and half of the road covers a drainage area of 1 acre, as shown in the schematic to the right.

31 KB (4,488 words) - 13:33, 12 February 2023
Stormwater management for lake protection and restoration
...ion, maintenance, and assessment; and information on pollutant loading and pollutant removal by different BMPs. [[File:Treatment train schematic.png|thumb|300px|alt=schematic showing the treatment train approach to stormwater runoff management|<font

17 KB (2,478 words) - 21:20, 20 February 2023
Types of sand (media) filters
...filter.jpg|thumb|300px|alt=Schematic of Delaware sand filter|Schematic of Delaware sand filter]] ...ers that are typically installed along the perimeter of a parking lot (See schematic of Delaware sand filter). Parking lot runoff enters the first chamber, whic

9 KB (1,374 words) - 18:59, 31 January 2023
TCMA Chloride TMDL - TMDL Development
...streams in the TCMA impaired by chloride. A TMDL quantifies the allowable pollutant loading to a lake or stream that will result in water quality standards bei ...noff load for stream TMDLs in the TCMA chart and for streams in the Model schematic for allowable runoff load for stream TMDLs in the TCMA chart. The primary d

16 KB (2,362 words) - 15:59, 23 November 2022
Estimating and calculating bypass for the Minimal Impact Design Standards (MIDS) Calculator
...jpg|thumb|300px|alt=Infiltration Basin Detailed Cross Section|Schematic showing an infiltration basin and the concept of bypass. Once the infiltra ...index.php?title=Phosphorus phosphorus], with the calculator overestimating pollutant removal.

6 KB (904 words) - 15:50, 12 January 2023
Stormwater infiltration
...ure stormwater runoff and allow it to infiltrate into the underlying soil. Pollutant removal occurs through a variety of mechanisms, including adsorption, absor ...y that a site is a hotspot, but rather that the potential to generate high pollutant runoff loads or concentrations exists. PSHs include locations where there i

10 KB (1,412 words) - 03:39, 13 February 2023
Requirements, recommendations and information for using swale without an underdrain as a BMP in the MIDS calculator
...been reduced from 73 to 68 percent to match the TSS reduction. Particulate pollutant removal cannot exceed sediment removal. ...t input a value for impervious area or the BMP will not provide volume and pollutant reduction. Other fields are optional.]]

33 KB (5,347 words) - 13:38, 29 January 2023
Information on pollutant removal by BMPs
...ollutant removal mechanism swale with underdrain|Schematic of pollutant removal mechanisms for a dry swale with an underdrain.]] ...s. To see updates to credits, see the page called [[Updates to credits and pollutant removal values]].

36 KB (5,227 words) - 00:44, 23 January 2023
Case study for using the MIDS calculator to meet TMDL permit requirements
The following case study highlights an example <span title="the amount of a pollutant from both point and nonpoint sources that a waterbody can receive and still ...to the impaired waterbody. Because the WLA applies to the impaired water, pollutant reduction achieved within the MS4 but not within the tributary area to the

26 KB (3,924 words) - 16:08, 12 January 2023
Water quality criteria
...2000) established a performance goal that BMPs provide a minimum degree of pollutant removal for a defined fraction of stormwater runoff events, which has been [[File:Schematic of total storage volume.jpg|thumb|300px|alt=schematic showing total storage volume|Illustration of total storage vol

8 KB (1,248 words) - 19:16, 6 December 2022
Decision tools for stormwater infiltration
...g/L). The concentration of zinc in runoff from an area is 6 mg/L. Expected pollutant removal rates are 65 percent for underground infiltration and 80 percent fo ...thumb|300px|alt=schematic used for infiltration basin example|Schematic showing dimensions for an infiltration basin. The average cross-sectional a

23 KB (3,334 words) - 17:06, 11 January 2023
Stormwater infiltration and setback (separation) distances
...t=schematic showing horizontal and vertical setback distances|Schematic showing some horizontal and vertical separation distances from an infiltrat ...m bottom of infiltration BMP to water table or top of bedrock|Schematic illustrating separation distance from bottom of infiltration BMP to water t

18 KB (2,702 words) - 20:15, 18 January 2024
Requirements, recommendations and information for using swale with an underdrain as a BMP in the MIDS calculator
...t input a value for impervious area or the BMP will not provide volume and pollutant reduction. Other fields are optional.]] ...umb|alt=Schematic of Swale with underdrain BMP parameters tab|Schematic of BMP parameters tab for Swale main channel (with underdrain). The user mu

31 KB (4,982 words) - 13:36, 29 January 2023
Scenario for developing a stormwater treatment train for a retrofit site
[[file:Retrofit Scenario Base.PNG|300px|thumb|alt=schematic showing layout for an urban retrofit treatment train scenario| ...zed in the following table and the existing site layout can be seen in the schematic to the right.

31 KB (4,411 words) - 13:21, 12 February 2023
Requirements, recommendations and information for using trees as a BMP in the MIDS calculator
[[File:watershed tab tree trench no underdrain.png|300px|thumb|alt=schematic of watershed tab for tree trench in MIDS calculator|Screen sho ..., the user must input the following parameters to calculate the volume and pollutant load reductions associated with the BMP.

33 KB (5,371 words) - 19:08, 23 November 2022
Scenario for developing a stormwater treatment train for constructed ponds in new development
...s schematic shows a New Residential Development Scenario Base|Schematic illustrating the site layout for this example. The site consists of 40 acr ...ater ponds in series approach. The existing site layout can be seen in the schematic to the right. The table below describes the site conditions for this new de

44 KB (6,330 words) - 13:35, 12 February 2023

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