Field testing of a low-cost retrofit filter berm to treat stormwater runoff contaminants.

Details

• Creators:
  Roseen, Robert M. ; Houle, James J. ; Ballestero, Thomas P.
• Corporate Creators:
  University of New Hampshire Stormwater Center
• Subject/TRT Terms:
  • Runoff
  • Berms
  • Retrofitting
  • Filter drains
  • Field tests
  • Gabions
  • Watersheds
  • Drainage
• Publication/ Report Number:
  ME 06-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maine
• Corporate Publisher:
  Maine. Dept. of Transportation
• Abstract:
  The goal of this cooperative effort between MaineDOT and the University of New Hampshire was to test a low-cost ; retrofit filter berm that would reduce non-point pollution from highway runoff. The retrofit berm would be easy to ; construct using readily available materials and construction equipment and would be designed to treat and remove ; certain constituents of the incoming stormwater runoff. ; The UNH Stormwater Research Center field research facility was ideally suited for this trial project. The center is ; located on the Durham, NH campus, and consists of an experimental facility that includes an upstream watershed ; area of approximately nine acres of student parking lot area. ; On this project an “engineered filter berm” was constructed and tested during several storm events. The research ; showed that this particular design did not perform as expected. The primary weaknesses of the design are high ; maintenance associated with clogging by leaf litter. Conclusions from the research are that the filter berm has some ; potential for a low cost retrofit in areas where leaf litter is not anticipated. ; Data collection for the project was cut short, however, due a 100 year storm event that caused the structure to fail. ; During the failure, the 8 inch stone outer casing was washed away. This allowed the core material, crushed stone ; and wood chips, to rapidly erode. The structural failure from overtopping by hydraulic overload could be addressed ; by using larger stone or by encasing the stone armor in wire wraps such as gabions
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27276/dot_27276_DS1.pdf
• File Type:
  [PDF - 1.37 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ec0cd24fe93e98580da4be289f2cea1f472dcaac8840f72d2fe60a958734401a