Development and evaluation of best management practices (BMPS) for highway runoff pollution control.

Details

• Creators:
  Zhang, Tian C. ; Stansbury, John ; Moussavi, Massoum
• Corporate Creators:
  University of Nebraska--Lincoln. Dept. of Civil Engineering
• Subject/TRT Terms:
  • Runoff
  • Water pollution
  • Pollution control
  • Water quality management
  • Best practices
  • Infiltration
  • Vegetation
  • Soils
  • Crumb rubber
  • Feasibility analysis
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• Publication/ Report Number:
  SPR-P1(12) M314
• Resource Type:
  Tech Report
• Geographical Coverage:
  Nebraska
• Corporate Publisher:
  Nebraska. Dept. of Roads
• Abstract:
  Polluted storm water runoff is commonly transported through Municipal Separate Storm Sewer Systems (MS4s). Currently, ; sufficient information is not available on development and evaluation of Best Management Practices (BMPs) within an MS4 ; boundary for highway storm water runoff treatment and management. The objectives of this research were to: a) develop and test ; the feasibility of roadside BMPs that rely on bioretention, infiltration, and slow conveyance of storm water; b) test combinations ; of plants and soil media that will be sustainable in Nebraska; and c) test the feasibility of using rubber chips as an alternative BMP ; medium. This project was conducted in two phases. In Phase I (07/2011−12/2012), four field-scale BMPs were designed, ; constructed and monitored, and four types of rubber chip mediated soil mixtures were tested in bench-scale columns for physical ; properties related to plant growth and infiltration as well as storm water treatment effectiveness. In Phase II (01/2013−12/2013), ; the four field-scale BMPs were monitored. In Phase I, it was found that a 50/50 mixture of rubber chips and sand had the best ; treatment, but lacked the best qualities for plant growth and may require addition of compost. The benefit of adding rubber chips ; as a low cost alternative material for filler did not outweigh the leaching of lead, copper and zinc. In Phase II, field tests indicate ; that the bioretention cells with the 30% loam 50% sand 20% mulch mix and with the 50% compost 50% sand mix had good ; vegetative growth and good physical characteristics to support vegetative growth and establishment. The infiltration trench had ; minimal sediment interception and clogging but showed slow drawdown times in the spring months. The filter trench had variable ; TSS removal percentages, with the side slope of the filter trench contributing a large amount of the solids loading. The check dam ; filters experienced significant sediment accumulation after the first storm event. However, it was found that drawdown times were ; still within the range for operation. The four BMPs tested are all functional and feasible for treatment of highway storm water ; runoff, with bioretention cells being the cheapest to construct ($0.91* ft3 of water quality volume of the watershed). Results ; obtained from this two-phase project can be used to design and build field-scale BMPs in eastern Nebraska (e.g., areas near ; Omaha and Lincoln).
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26929/dot_26929_DS1.pdf
• File Type:
  [PDF - 11.66 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c89457cc25a898fb90489f0d6cc9f5479e026ecad01aae758caaa5cd80c5d339