Inlet Protection Devices and Their Effectiveness

Details

• Creators:
  Wanielista, Marty ; Chopra, Manoj ; Hardin, Mike ; Goolsby, Matt
• Corporate Creators:
  University of Central Florida. Stormwater Management Academy
• Contributors:
  Gogo-Abite, Ikiensinma
• Corporate Contributors:
  Florida. Department of Transportation
• Subject/TRT Terms:
  Culvert Inlets Culverts Inlet Protection Devices Inspection Maintenance Materials And Structures Protection Runoff Sediment Control Water Quality Management
• Publication/ Report Number:
  BDK78 977-03
• Resource Type:
  Research Paper
• Geographical Coverage:
  Florida
• Corporate Publisher:
  University of Central Florida. Stormwater Management Academy
• Abstract:
  Thirteen Inlet Protection Devices (IPDs) are evaluated for flooding and pollution removal potential. Each IPD reflects a common product for control of sediment in the State of Florida. The IPDs were installed and evaluated for both curb (Type 5) and drop (Type C) inlets. At least three runoff events were conducted for each product type. Water Quality measurements for turbidity, total solids, pH, alkalinity, and nutrients were done before and after passing through the IPD. Removal effectiveness under the conditions during each runoff event was calculated. The evaluations were performed using runoff from ½ inch rainfall events. Findings based on the field evaluations include: (1) All IPDs performed at a level that reduced the amount of sediment and nutrients entering the storm sewer or water body; (2) Each IPD evaluated has its own unique data set for pollution control; (3) All IPDs will perform the best with regular and proper maintenance. A regularly scheduled inspection and/or cleaning of an IPD should be required. The scheduled maintenance will increase the effectiveness and product life, while decreasing the risk of ponding on a roadway; (4) Turbidity, total solids, and nutrient reduction estimates can eventually become part of a mass loading reduction program in a watershed. The estimates presented in this work should be considered; (5) For both the curb and drop IPD, ease of installation and maintenance is a factor in achieving desired performance. Thus, regular inspections should be part of a maintenance program; and (6) For drop inlets, IPDs in series consisting of a product upstream of the inlet to attenuate flow rate and a product beneath the grate that can filter the water is a more efficient system. The grate capture product will have to be maintained.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:52c04480abca55a6eb9a9f45a30dd9a55b9c1e51ba53e63130ac7100a677f170
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/60894/dot_60894_DS1.pdf
• File Type:
  [PDF - 2.11 MB ]