m |
m |
||
Line 16: | Line 16: | ||
<td> | <td> | ||
*100 for water that is infiltrated | *100 for water that is infiltrated | ||
− | *25 for water that passes through an underdrain | + | *25 for water that passes through an underdrain<sup>3</sup> |
*for water bypassing the bioretention BMP</td> | *for water bypassing the bioretention BMP</td> | ||
<td>50</td> | <td>50</td> | ||
Line 25: | Line 25: | ||
</table> | </table> | ||
<font size=1><sup>1</sup> Average of zinc and copper<br> | <font size=1><sup>1</sup> Average of zinc and copper<br> | ||
− | <sup>2</sup> Assumed values based on filtering practice performance</font size> | + | <sup>2</sup> Assumed values based on filtering practice performance |
+ | <sup>3</sup>From the Minimal Impact Design Standards (MIDS) calculator, which assumes phosphorus in runoff is 55 percent particulate, 45 percent dissolved, and that removal efficiency is 45 percent for particulate fraction and 0 percent for dissolved fraction.</font size> | ||
<noinclude>[[category:table]]</noinclude> | <noinclude>[[category:table]]</noinclude> |
Pollutant removal percentages for bioretention BMPs. Source Winer, 2000.
Link to this table
Practice | TSS | Total Phosphorus | Total nitrogen | Metals1 | Bacteria | Hydrocarbons |
---|---|---|---|---|---|---|
Bioretention1 | 852 |
|
50 | 95 | 352 | 80 |
1 Average of zinc and copper
2 Assumed values based on filtering practice performance
3From the Minimal Impact Design Standards (MIDS) calculator, which assumes phosphorus in runoff is 55 percent particulate, 45 percent dissolved, and that removal efficiency is 45 percent for particulate fraction and 0 percent for dissolved fraction.