Tahoe Basin Particle Study: Completed a comparative
analysis of three different analytical methods for determining
concentrations of fine particles in highway runoff. Determined
the chemical characteristics of the different sized particles
found in highway runoff.
Caltrans Tahoe Highway Runoff Characterization
and Sand Trap Effectiveness Studies, 2000-2003 Monitoring Report,
June 2003. CTSW-RT-03-054.36.02
Drain Inlet Cleaning Efficacy Study: In fifth year of
study to determine whether cleaning drain inlets on Caltrans
highways affects the quality of stormwater runoff.
No reporting documents are avalable at this time.
Literature Review and Evaluation Studies: Detailed
literature reviews for the following topics were performed and
documented:
- Alternative inlet and outlet structures for detention
basins
- Detention basin optimization
- Combined detention basin and sand filter, filter
optimization
- Alternative media gravity filters
- Detention basin chemical treatment
In addition, a comprehensive literature review to scope ideas for
stormwater treatment pilot studies was performed. Finally, annual
reviews of new stormwater treatment technologies are performed.
Caltrans Treatment BMP Technology Report April 2007.pdf
Vector Control Studies: Worked collectively with
Caltrans, California Department of Health Services, and local
vector control agencies to study the affect that structural Best
Management Practices (BMPs) may have on public health. Based on
the information collected from several studies, recommendations
were provided to retrofit the BMPs to stop vectors from utilizing
these structures as habitat/harborage. Provided additional
maintenance recommendations and design guidelines to minimize
vector habitat for future BMP implementation.
Tahoe Basin Small-Scale Pilot Project: A
small-scale test facility was constructed at the Caltrans South
Lake Tahoe Maintenance Station in 2001. The facility includes 16
separate treatment systems. The second year of testing on various
combinations of sedimentation, filtration, and chemical addition
for possible application in full-scale pilots is complete. The
third year of testing is ongoing. This project received a 2002
“Best Basin Project” award from the Tahoe Regional
Planning Agency (TRPA).
