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Last Updated: Friday, December 5, 2008 9:45 AM
Types of BMPS
Bio Filtration Swales and Strips
Biofiltration swales and strips are vegetated areas that remove pollutants from stormwater runoff as it flows through the vegetation. Removal mechanisms include filtration and infiltration. In this study, one biofiltration strip and six swales treat highway runoff, while two strips treat runoff from maintenance yards (for pretreatment for infiltration trenches). Runoff is captured in drain inlets and routed to the swales, while strips receive sheet flow directly from the pavement. Swales are conveyance channels where stormwater flow passes through the grass. Strips are broad surfaces with a grass cover that allows stormwater to flow in relatively thin sheets.
BMP Details
- OVERVIEW
- SUMMARY OF SITE CHARACTERISTICS
- SITE MAPS
- EXTENDED DETENTION BASIN
- DRAIN INLET INSERTS
- INFILTRATION BASINS AND TRENCHES
- OIL/WATER SEPARATOR
- MEDIA FILTERS
- MULTI-CHAMBERED TREATMENT TRAINS (MCTT)
- BIOFILTRATION SWALES AND STRIPS
- CONTINUOUS DEFLECTION SEPARATORS (CDS)
- WET BASIN
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BIO STRIP |
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Site Location: Carlsbad Maintenance Station (west) Directions: I-5 to eastbound Palomar Airport Road, right on Paseo Del Norte, left into station . |
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BIO STRIP |
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Site Location: Altadena Maintenance Station Directions: I-210 to 212 North Windsor Avenue, east side of I-210 |
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BIO STRIP |
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| Site Location: I-605/SR 91 | |
Directions: On I-605 northbound shoulder, access around Cerritos Maintenance Station (westbound on SR 91 to 16849 Studebaker Road) |
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Biofiltration swales and strips are providing useful information about vegetation that can filter stormwater pollutants effectively in dry areas with little rainfall. These biofiltration devices can also be used for pretreating stormwater going to infiltration BMPs (i.e., trenches and basins). This "treatment train" approach can increase the overall effectiveness of stormwater treatment. |
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BIO SWALE |
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| Site Location: I-605/SR 91 Directions: On I-605 northbound shoulder, access around Cerritos Maintenance Station (westbound on SR 91 to 16849 Studebaker Road) |
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BIO SWALE |
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| Site Location: Cerritos Maintenance Station Directions: I-605 south to eastbound Alondra Blvd. exit, southbound to 16849 Studebaker Road |
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BIO SWALE |
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| Site Location: I-5/I-605 Directions: I-5 southbound, south of the I-5 southbound and I-605 northbound connector, North of I-605 |
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BIO SWALE |
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| Site Location: I-605 Del Amo Avenue Directions: I-605 northbound, on shoulder between Del Amo and Carson Streets |
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BIO SWALE |
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| Site Location: SR 78/Melrose Drive Directions: Eastbound on SR 78, 120 yards before Melrose Avenue off ramp |
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BIO SWALE |
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Site Location: I-5/Palomar Airport Road Directions: Southbound on I-5, on shoulder north of Palomar Airport Road off ramp |
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FOR MORE INFORMATION CONTACT
Division of Environmental Analysis, Stormwater Unit
California Department of Transportation
P.O. Box 942874, MS-27
Sacramento, CA 94274-0001
Email: