m |
m |
||
Line 26: | Line 26: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Biofiltration</td> | + | <td>[[Bioretention|Biofiltration]]</td> |
<td>85</td> | <td>85</td> | ||
<td>[http://stormwater.pca.state.mn.us/index.php/Phosphorus_credits_for_bioretention_systems_with_an_underdrain link to table]</td> | <td>[http://stormwater.pca.state.mn.us/index.php/Phosphorus_credits_for_bioretention_systems_with_an_underdrain link to table]</td> | ||
Line 37: | Line 37: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Sand filter</td> | + | <td>[[Filtration|Sand filter]]</td> |
<td>85</td> | <td>85</td> | ||
<td>50</td> | <td>50</td> | ||
Line 48: | Line 48: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Dry swale</td> | + | <td>[[Filtration|Dry swale]]</td> |
<td>68</td> | <td>68</td> | ||
<td>[http://stormwater.pca.state.mn.us/index.php/Phosphorus_credits_for_bioretention_systems_with_an_underdrain link to table]</td> | <td>[http://stormwater.pca.state.mn.us/index.php/Phosphorus_credits_for_bioretention_systems_with_an_underdrain link to table]</td> | ||
Line 70: | Line 70: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Constructed ponds</td> | + | <td>[[Stormwater ponds|Constructed ponds]]</td> |
<td>84</td> | <td>84</td> | ||
<td>50</td> | <td>50</td> | ||
Line 81: | Line 81: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Constructed wetlands</td> | + | <td>[[Stormwater wetlands|Constructed wetlands]]</td> |
<td>73</td> | <td>73</td> | ||
<td>38</td> | <td>38</td> | ||
Line 92: | Line 92: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Permeable pavement</td> | + | <td>[[Permeable pavement]]</td> |
<td>74</td> | <td>74</td> | ||
<td>45</td> | <td>45</td> | ||
Line 103: | Line 103: | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Green roofs</td> | + | <td>[[Green roofs]]</td> |
<td>85</td> | <td>85</td> | ||
<td>0</td> | <td>0</td> |
Median pollutant removal percentages for several stormwater BMPs. More detailed information and renages of values can be found in other locations in this manual, as indicated in the table.
Link to this table
Practice | TSS | TP | PP | DP | TN | Metals | Bacteria | Hydrocarbons |
---|---|---|---|---|---|---|---|---|
Infiltration 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Biofiltration | 85 | link to table | link to table | link to table | 50 | 35 | 95 | 80 |
Sand filter | 85 | 50 | 91 | 0 | 35 | 50 | 80 | 80 |
Dry swale | 68 | link to table | link to table | link to table | 35 | 0 | 80 | 80 |
Wet swale | 68 | 0 | 0 | 0 | 0 | |||
Constructed ponds | 84 | 50 | 91 | 0 | 30 | 70 | 60 | 80 |
Constructed wetlands | 73 | 38 | 69 | 0 | 30 | 70 | 60 | 80 |
Permeable pavement | 74 | 45 | 82 | 0 | ||||
Green roofs | 85 | 0 | 0 | 0 |
1BMPs designed to infiltrate stormwater runoff, such as infiltration basin/trench, bioinfiltration, permeable pavement with no underdrain, tree trenches with no underdrain, and BMPs with raised underdrains.
2Pollutant removal is 100 percent for the volume infiltrated, 0 for water bypassing the BMP. For filtered water, see values for other BMPs in the table.