m |
m |
||
Line 10: | Line 10: | ||
<th>DP</th> | <th>DP</th> | ||
<th>TN</th> | <th>TN</th> | ||
− | <th>Metals</th> | + | <th>Metals<sup>1</sup></th> |
<th>Bacteria</th> | <th>Bacteria</th> | ||
<th>Hydrocarbons</th> | <th>Hydrocarbons</th> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
− | <td>Infiltration <sup> | + | <td>Infiltration <sup>2</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
− | <td><sup> | + | <td><sup>3</sup></td> |
</tr> | </tr> | ||
<tr> | <tr> | ||
Line 125: | Line 125: | ||
</tr> | </tr> | ||
</table> | </table> | ||
− | <font size=1><sup>1</sup>BMPs designed to infiltrate stormwater runoff, such as [[Infiltration basin|infiltration basin/trench]], [[Bioretention|bioinfiltration]], [[Permeable pavement|permeable pavement]] with no underdrain, [[Trees|tree trenches]] with no underdrain, and BMPs with raised underdrains.<br> | + | <font size=1>TSS=Total suspended solids, TP=Total phosphorus, PP=Particulate phosphorus, DP=Dissolved phosphorus, TN=Total nitrogen<br> |
− | <sup> | + | <sup>1</sup>Data for metals is based on the average of data for zinc and copper |
+ | <sup>2</sup>BMPs designed to infiltrate stormwater runoff, such as [[Infiltration basin|infiltration basin/trench]], [[Bioretention|bioinfiltration]], [[Permeable pavement|permeable pavement]] with no underdrain, [[Trees|tree trenches]] with no underdrain, and BMPs with raised underdrains.<br> | ||
+ | <sup>3</sup>Pollutant 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.<br> | ||
<noinclude> | <noinclude> |
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 | Metals1 | Bacteria | Hydrocarbons |
---|---|---|---|---|---|---|---|---|
Infiltration 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
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 |
Iron enhanced sand filter | 85 | 50 | 91 | 60 | 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 |
TSS=Total suspended solids, TP=Total phosphorus, PP=Particulate phosphorus, DP=Dissolved phosphorus, TN=Total nitrogen
1Data for metals is based on the average of data for zinc and copper
2BMPs 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.
3Pollutant 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.