3 edition of Contaminant detention in highway grass filter strips found in the catalog.
Contaminant detention in highway grass filter strips
by Washington State Dept. of Transportation, Available through the National Technical Information Service in [Olympia, Wash.], [Springfield, VA
Written in English
|Other titles||Research project :|
|Statement||by David Yonge.|
|Contributions||Washington (State). Dept. of Transportation. Research Office., Washington State Transportation Center., Washington State University. Dept. of Civil and Environmental Engineering.|
|The Physical Object|
|Pagination||v, 67 p. :|
|Number of Pages||67|
EPA//R/ September Stormwater Best Management Practice Design Guide Volume 1 General Considerations By Michael L. Clar, P.E. Ecosite, Inc. Ellicott City, Maryland, Billy J. Barfield, P.E., Ph.D. Professor Emeritus Department of Agricultural Engineering Oklahoma State University Stillwater, Oklahoma Thomas P. O'Connor Urban Watershed Management Branch Water . Surface water contamination can often be reduced by passing runoff water through perennial grass filters. Research was conducted in to to evaluate the size of cool season grass filters consisting primarily of tall fescue (Festuca arundinacea Schreb) with some orchard grass (Dactylis glomerata L.) relative to drainage area size in reducing runoff sediment and phosphorus (P).Cited by:
Grass Coverage –Standard ODOT grass seed mix (ODOT specification , Slope Mixture 3B) 0 20 40 60 80 Jun Sep Dec Mar Jul Oct e Bed 1 Bed 2 Bed 3 Seed spread at lb/ft2 (g/m2) ODOT/Ohio University Post-Construction BMP ResearchFile Size: 4MB. Applicable to grass strips, bioretention, bioswales, detention basins, green roofs, manufactured devices, media filters, porous pavements, wetland basins, and wetland channels. New Hampshire Department of Environmental Services. New Hampshire Stormwater Manual. Volume 2 Appendix B. Provides values for volume, TSS, TN, and TP removal.
A dry detention basin is an impoundment or excavated basin for the short-term detention of stormwater runoff from a completed development that allows a controlled release from the structure at downstream, pre-development flow rates. Conventional dry detention basins typically control peak runoff for 2-year and year hour storms. Bioretention Basins. Bioretention basins are landscaped depressions or shallow basins used to slow and treat on-site stormwater runoff. Stormwater is directed to the basin and then percolates through the system where it is treated by a number of physical, chemical and biological processes.
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Yonge, D.R., Contaminant detention in highway grass filter strips. Report No. WA-RDWashington State Department of Transportation, Olympia, Washington, USA.
We want to hear from you!!. Let us know your thoughts, experiences, and questions by posting a comment. To get you thinking, here are a few questions. Photo 1 – Grass filter strips placed on a newly vegetated slope Photo 2 – Grass filter strip placed along the contour on a sandy soil Key Principles 1.
Grass filter strips can perform various functions including reducing the risk of rill erosion on steep newly seeded slopes (Photo1), erosion control benefits (for the soil beneath the turf),File Size: KB.
“Performance of grass swales for improving water quality from highway runoff.” Water Res., 46(20), U.S. EPA (). Vegetated Swales, Stormwater Technology Fact Sheet F, Office of Water, United States Environmental Protection Agency, Washington D.C.
Yonge, D. Contaminant detention in highway grass filter strips. Vegetated filter strips are gently sloped areas designed to receive. sheet flows from adjacent impervious surfaces. Filter strips are vegetated with grasses and groundcovers that filter and reduce the velocity of stormwater.
Peak stormwater flows are attenuated as stormwater travels across the filter strip and infiltrates or is storedFile Size: KB. Filter strips with the leading edge on the contour will function better than those with a gradient along the leading edge. rates. Seeding rates that establish a higher stem density than the normal density for a high quality grass hay crop may be more effective in trapping and treating contaminants.
Filter strips should be strategically located toFile Size: KB. The effectiveness of grass strips for the control of sediment and associated pollutant transport 85 As the strips of grass were grown over 30 days prior to the flume experiments, the soil under the grass became consolidated.
In order to bring the soil bed in the flume to the same level of consolidation as the soil under the grass strip, it was. A strip is designed to filter surface sheet flow. Concentrated flows need to be dispersed before water enters a strip. A filter strip is typically positioned at the down-slope edge of a field or disturbed area.
Filter strips are normally only used when adjacent and up-gradient areas have slopes gradients between 1. Effectiveness. The water quality benefits of filter strips and grass riparian buffers are very variable and often site-specific.
Sediment removal might exceed 50 percent depending on their width, soil characteristics, slope, and the size of the area draining to the filter or buffer. Enhancing Contaminant Removal in Stormwater Detention Basins by Coagulation FALCON A.
PRICE AND DAVID R. YONGE The Washington State Department of Transportation designs, operates, and maintains stormwater detention basins for flood control. Histori cally, detention basin design was based primarily on hydraulic charac.
Contaminant detention in highway grass filter strips. Report No. WA-RDWashington State Department of Transportation, Olympia, Washington, USA. Google ScholarCited by: CONSERVATION PRACTICE STANDARD.
FILTER STRIP. Code (Ac) DEFINITION A strip or area of herbaceous vegetation that removes contaminants from overland flow. PURPOSE • Reduce suspended solids and associated contaminants in runoff and excessive sediment in surface waters. • Reduce dissolved contaminant loadings in runoff.
Grass ﬁlter strips are low-angle vegetated slopes designed to treat sheet ﬂow runoff from adjacent impervious areas. Filter strips (also known as vegetated ﬁlter strips and grassed ﬁlters) function by slowing runoff velocities, ﬁltering out sediment and other pollutants, and.
upslope contour strips (20% PFS with strips) (figure 2). In July ofareas receiving PFS treatment were seeded with a diverse mixture of native prairie forbs and grasses, dominated by Indian grass (Sorghastrum nutans. L.), little bluestem (Schizachyrium scoparium. L.), and big bluestem (Andropogon gerardii.
L.). Prairie filterCited by: vegetated controls (grassy swales and vegetative filter strips). For instance, stormwater runoff from roads in many rural areas are conveyed across vegetated areas and through grass lined ditches.
When designed as described in this manual, these vegetated areas will provide the required reduction in TSS loads without additional treatment. Schueler, T.R., Kumble, P.A., and Heraty, M.A. () A Current Assessment of Urban Best Management Practices: Techniques for Reducing Non-Point Source Pollution in.
Infiltration (36–82% of runoff volume) substantially reduced the mass of contaminants exiting the filter strips. Doubling filter strip width from to 15 m doubled infiltration and dilution, but did not improve sediment settling.
Young trees and shrubs planted in the lower one-half of otherwise grass strips had no impact on filter performance. Performance of Grass Swales for Improving Water Quality from Highway Runoff. pre-treatment grass filter strips and vegetated check dams, were compared during 45 storm events over years.
Simulated rainfall and runoff were used to compare the effectiveness of 6 m and 3 m wide filter strips of switchgrass (Panicum virgatum) and cool-season filter strips consisting of bromegrass (Bromus inermis), timothy (Phleum pratense) and fescue (Festuca spp.) in reducing sediment, nitrogen and phosphorus in surface runoff from adjacent crop fields.
The 6 m and 3 m wide strips represented 20 Cited by: A highway median swale, located on Asheville Highway, Knoxville, Tennessee, was monitored for hydrology over an month period. The total catchment was ha, with ha of roadway draining. filter strip shall not exceed one-half of the up-and-down hill slope percent, immediately upslope from the filter strip, up to a maximum of 5%.
Filter strips shall not be used as a travel lane for equipment or livestock. Prevent erosion where filter strips outlet into streams or channels.
The filter strip will be designed to have a year life. Field data information not available Grassed Filter Strips 1 study has reported on the effectiveness of 75 ft and ft grassed filters strips at removing TSS (54%, 84%), Nitrate, Nitrite (%, 20%), TP (%, 40%), Lead (%, 50%), and Zinc (47%, 55%) (ASCE, ; CWP, ) Grassed filter strips do not have the capacity to detain large.Many highways in Texas and other areas discharge storm water to grassy medians and shoulder areas, which act as both filter strips and grassed swales.
The runoff flows overland down the sides of the median as in a filter strip and then parallel to the highway more» as in a grassed swale. The pollutant removal efficiency of a bioretention area and a level spreader-grass filter strip implemented at North Carolina highway facilities was assessed.
The assessment consisted of monitoring inflow, outflow, and on-site rainfall for at least 13 storm events.