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<td Rowspan="2">Bioretention</td>
 
<td Rowspan="2">Bioretention</td>
 
<td>Underdrain</td>
 
<td>Underdrain</td>
<td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
+
<td>59<br>
<td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
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see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
<td>see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
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<td>80<br>
 +
see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
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<td>0<br>
 +
see [[Phosphorus credits for bioretention systems with an underdrain]]</td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
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<tr>
 
<tr>
 
<td>Pond/Wetland</td>
 
<td>Pond/Wetland</td>
<td></td>
+
<td>44</td>
<td></td>
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<td>49</td>
<td>0</td>
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<td>33</td>
 
</tr>
 
</tr>
 
</table>
 
</table>
  
 
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<font size=1>
<sup>a</sup> Removal rates shown in table are a composite of five sources: [http://www.bmpdatabase.org ASCE/EPA International BMP Database]; Caraco (CWP), 2001; [https://mde.maryland.gov/programs/water/stormwatermanagementprogram/pages/stormwater_design.aspx MDE], 2000; [http://www.stormwatercenter.net/Library/STP-Pollutant-Removal-Database.pdf Winer (CWP)], 2000; and Issue Paper D [http://wwwalker.net/p8/ P8] modeling<br>
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<sup>a</sup> Removal rates shown in table are a composite of five sources: [http://www.bmpdatabase.org ASCE/EPA International BMP Database]; Caraco (CWP), 2001; [https://mde.maryland.gov/programs/water/stormwatermanagementprogram/pages/stormwater_design.aspx MDE], 2000; [http://www.stormwatercenter.net/Library/STP-Pollutant-Removal-Database.pdf Winer (CWP)], 2000; and [https://stormwater.pca.state.mn.us/index.php?title=File:Issue_paper_D_-_unified_sizing_criteria_for_Minnesota.pdf Issue Paper D] [http://wwwalker.net/p8/ P8] modeling<br>
 
<sup>b</sup> Average removal efficiency expected under [http://www.pca.state.mn.us/index.php/water/water-types-and-programs/stormwater/construction-stormwater/index.html MPCA Construction General Permit] sizing requirements<br>
 
<sup>b</sup> Average removal efficiency expected under [http://www.pca.state.mn.us/index.php/water/water-types-and-programs/stormwater/construction-stormwater/index.html MPCA Construction General Permit] sizing requirements<br>
 
<sup>c</sup> Upper limit on phosphorus removal with increased sizing and design features, based on national review<br>
 
<sup>c</sup> Upper limit on phosphorus removal with increased sizing and design features, based on national review<br>
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{{alert|Removal rates shown here are composite averages intended solely for use in comparing performance between BMP designs and for use in calculating load reduction in site-based TP models. They have been adapted, rounded and slightly discounted from statistical values published in BMP performance databases.|alert-warning}}
 
{{alert|Removal rates shown here are composite averages intended solely for use in comparing performance between BMP designs and for use in calculating load reduction in site-based TP models. They have been adapted, rounded and slightly discounted from statistical values published in BMP performance databases.|alert-warning}}
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[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Pollutant removal]]
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Latest revision as of 20:07, 4 August 2022

General summary of comparative BMP phosphorus removal performancea,e,f
Link to this table

Information: The values in this table represent information from the literature. The values do not represent credits provided elsewhere in this manual [See, for example, Information on pollutant removal by BMPs and Phosphorus credits for bioretention systems with an underdrain
BMP Group BMP Design Variation Average TP Removal Rate (%)b Maximum TP Removal Rate (%)c Average Soluble P Removal Rate (%)dg
Bioretention Underdrain 59
see Phosphorus credits for bioretention systems with an underdrain
80
see Phosphorus credits for bioretention systems with an underdrain
0
see Phosphorus credits for bioretention systems with an underdrain
Infiltration
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
Filtration Media Filter 50 55 0
Vegetative Filters (dry) 50 55 0
Wet Swale 0 35 0
Infiltrationf,i Infiltration Trench
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
Infiltration Basin
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
  • 100 for infiltrated portion
  • 0 for non-infiltrated portion
Stormwater Ponds Wet Pond 50 75 0
Multiple Pond 60 75 0
Stormwater Wetlands Shallow Wetland 40 45 0
Pond/Wetland 44 49 33

a Removal rates shown in table are a composite of five sources: ASCE/EPA International BMP Database; Caraco (CWP), 2001; MDE, 2000; Winer (CWP), 2000; and Issue Paper D P8 modeling
b Average removal efficiency expected under MPCA Construction General Permit sizing requirements
c Upper limit on phosphorus removal with increased sizing and design features, based on national review
d Average rate of soluble phosphorus removal in literature
e See also Stormwater pollutant removal, stormwater credits
f Note that the performance numbers apply only to that portion of total flow actually being treated; it does not include any runoff that by-passes the BMP
g Note that soluble P can transfer from surface water to ground water, but this column refers only to surface water
h Note that 100% is assumed for all infiltration, but only for that portion of the flow fully treated in theinfiltration facility; by-passed runoff or runoff diverted via underdrain does not receive this level of treatment

Caution: Removal rates shown here are composite averages intended solely for use in comparing performance between BMP designs and for use in calculating load reduction in site-based TP models. They have been adapted, rounded and slightly discounted from statistical values published in BMP performance databases.

This page was last edited on 4 August 2022, at 20:07.