 |
|
|
|
|
|
|
 |
 |
 |
 |
 |
|
|
 |
 |
 |
 |
 |
|
 |
|
|
|
 |
|
||
 |
 |
 |
|
Bioretention
Bioretention utilizes soils to slow the runoff’s velocity and utilizes trees and shrubs to remove pollutants from stormwater. Bioretention is an ideal stormwater management BMP for median strips, parking lot islands, and swales. However, bioretention is neither an appropriate BMP for a location where the water table is too close to the ground (6 feet) nor for location in cold climates where the soil might freeze and prevent infiltration of runoff into the planted soil. Regular inspection of the treatment area for health of the vegetation, pruning, and weeding are recommended for a bioretention BMP’s maintenance. Mulch replacement is also recommended when erosion is evident or when the site begins to look unattractive.
Click here for the detail design of bioretention from EPA’s Storm Water Technology Fact Sheet: Bioretention
Source: Image of Bioretention Installation in Prince George's County, MD
 |
|
|
|
|
|
|
|
|
|
 |
|
||||||||
 |
 |
 |
|
||||||
 |
 |
 |
|
||||||
 |
|
||||||||
 |
|
||||||||
 |
 |
 |
|
||||||
 |
 |
 |
|
||||||
 |
 |
|
|||||||
 |
|
|
|
|
|
|
 |
 |
 |
 |
 |
 |
|
 |
|
|
|
|
|
 |
 |
 |
 |
|
 |
|
|
|
 |
|
Copyright @ January,2005 Prepared by Transportation Environmental Resource Center (TERC)