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Overview
Basics
Basics
The infiltration of stormwater is not always practical as a treatment BMP in the LTB, so an effective and economical treatment alternative is needed. The operation of manned sedimentation or filtration systems for stormwater is not technically or economically feasible. Granular Perlite has been tested and utilized as an unmanned stormwater filter media. In order to further the understanding of the benefits and costs of a perlite filter media as a treatment BMP in the LTB, El Dorado County proposes to conduct full scale testing of this BMP in an existing urban stormwater system that currently discharges directly to Trout Creek.
Completed
2008
2009
2011
$74,294
Donaldo Palaroan (donaldo.palaroan@edcgov.us)
10/27/2017
10/27/2017
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| Location Information | Location Notes |
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Organizations
Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0102 - P037: Urban Stormwater Fine Sediment Filtration Using Granular Perlite
Performance Measures
Expected Performance Measures
Expected Performance Measures
No expected performance measures set for this project.
Reported Performance Measures
Reported Performance Measures
No annual performance measure accomplishments entered for this project.
Funding
Expected Funding
Expected Funding
$74,294
$74,294
$0
| Total | |||
|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacific Southwest Research Station) (USFS - PSW) | $74,294 | $74,294 | $0 |
| Grand Total | $74,294 | $74,294 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2011 | 2010 | 2009 | 2008 | |
|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $74,294 | $18,574 | $18,574 | $18,573 | $18,573 |
| Grand Total | $74,294 | $18,574 | $18,574 | $18,573 | $18,573 |
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Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
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The infiltration of stormwater is not always practical as a treatment BMP in the Lake Tahoe basin, so an effective and economical treatment alternative is needed.
Local and Regional Plans
No Local and Regional Plans set for this project.
Related Projects
Related Projects
No Related Projects set for this project.
External Links
No external links entered.
Notes
Notes
| 10/27/2017 2:36 PM | Matt Driscoll | Match Funding: $14,700 | ||
| 08/18/2017 6:48 AM | Kiara Cuerpo-Hadsall | Objectives: The goal of this research was to advance understanding in the Lake Tahoe Basin relative to media filtration options available for the treatment of fine sediment in urban runoff by evaluating perlite filtration media. This research quantified the water quality benefits, fine sediment treatment, measured load reduction and operational concerns relative to treatment. The hypothesis of this research was that filtering urban stormwater with granular perlite would be: • Effective in significantly reducing fine sediment from urban runoff. • Practical for installation and operation in a drainage inlet within an extensive storm drain system. • Economically efficient relative to other filtration alternatives for the treatment of fine sediment. |
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| 08/18/2017 6:48 AM | Kiara Cuerpo-Hadsall | Findings: • The filtration efficiency ranged from -19% to 86% effective for TSS and -14% to 75% effective for <16 micron TSS. • The unit cost of sediment removal was calculated to be (at best case scenario) between $29-$57 / lb of TSS removed. The <16 micron portion of TSS was calculated between $85-$170 / lb. • In the Lake Tahoe Basin, a TMDL credit equals1.0×1016 or 200 pounds fine sediment particles with a diameter smaller than 16 micron. The range in annual load reduction based on actual monitoring data and modeled flow data determined that the annual <16 micron load reduction can range from 12-24 pounds / filtration unit / year. This equates to .06 - .12 credits annually per filtration unit when operated optimally with intensive maintenance. |
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| 08/18/2017 6:47 AM | Kiara Cuerpo-Hadsall | Management Implications: • It was found that the filter system is susceptible to clogging at both the drop inlet (DI) and within the filter mechanism. This issue is exacerbated during freezing conditions. • The preliminary results have indicated that the filter and DI plug fairly easily with debris and material transported from the road. This is discouraging in that it creates both flooding and liability issues. • The results of this study indicate that this type of filtration system can be effective, but will be maintenance intensive and therefore, cost prohibitive. |
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| 08/18/2017 6:47 AM | Kiara Cuerpo-Hadsall | Publications: www.fs.fed.us/PSW/partnerships/tahoescience |