Small-scale studies on low intensity chemical dosing (LICD) for treatment of highway runoff.

Details

• Alternative Title:
  Caltrans LICD final report.
• Creators:
  Bachand, P. ; Trejo-Gaytan, J. ; Darby, J. ; Reuter, J.
• Corporate Creators:
  University of California, Davis. Tahoe Environmental Research Center
• Subject/TRT Terms:
  • Runoff
  • Environmental aspects
  • Tahoe, Lake, Watershed (Calif and Nev)
  • Road drainage
  • Water quality management
• Resource Type:
  Tech Report
• Geographical Coverage:
  California
• Corporate Publisher:
  California. Department of Transportation
• Abstract:
  In the Tahoe Basin, strict surface water discharge limits of 20 NTU for turbidity and 0.1 mg/L ; for total phosphorus are due to come into effect in 2008. The main concern in terms of water ; quality is the discharge of fine particles and nutrients into Lake Tahoe. The overall goal of this ; project was to determine the feasibility of low intensity chemical dosing (LICD) for improving ; highway storm water runoff quality in the Lake Tahoe Basin. A primary objective was to ; identify promising coagulant chemistries for turbidity and phosphorus reduction that could be ; tested further in small-scale and full-scale pilots. This project combined literature reviews, ; laboratory studies (charge titration and jar test experiments using synthetic and actual storm ; water runoff) and settling column studies to assess treatment performance and feasibility. A ; related project funded by the U.S.D.A. Forest Service (through the City of South Lake Tahoe) ; for which the Caltrans funds for this study provided the match has investigated ecotoxicity issues ; associated with coagulant treated storm waters in the Tahoe Basin.
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• Format:
  PDF
• Funding:
  43A0073
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27619/dot_27619_DS1.pdf
• File Type:
  [PDF - 1.60 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:55443e6b4651916ecfdcec222b7a03cd263a448b0bf4af32bd20e794f9aadc61