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Overview
Basics
Basics
The primary focus of this research was to obtain a representative and reliable stormwater dataset to compare to applicable predictions from the Pollutant Load Reduction Model and provide road specific data to inform the development of Road Rapid Assessment Methodology.
These currently are the only tools approved for use by the Lake Clarity Crediting Program and Nevada Division of Environmental Protection, a program intended to incentivize and measure progress toward the attainment of urban stormwater load reductions established in the Lake Tahoe Total Maximum Daily Load. However the initial versions of each tool were developed with known limitations.
Completed
2008
2009
2012
$464,873
Maggie Mathias (maggie@2ndnaturellc.com)
09/21/2017
09/21/2017
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| Location Information | Location Notes |
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Organizations
Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0059 - P038: Focused Stormwater Quality Monitoring to Inform Assumptions & Evaluate Predictive Capabilities of Existing Tools
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
$464,873
$464,873
$0
| Total | |||
|---|---|---|---|
| Unknown or Unassigned | $464,873 | $464,873 | $0 |
| Grand Total | $464,873 | $464,873 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2012 | 2011 | 2010 | 2009 | 2008 | |
|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $464,873 | $92,974 | $92,975 | $92,975 | $92,975 | $92,974 |
| Grand Total | $464,873 | $92,974 | $92,975 | $92,975 | $92,975 | $92,974 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
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The objective of the PLRM is to provide Lake Tahoe resource managers with a tool to evaluate pollutant load reduction alternatives for urban storm water quality improvement projects.
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
Notes
Notes
| 08/22/2017 11:48 AM | System | Objectives: Expand and apply the urban road monitoring dataset to: • Test and refine the Pollutant Load Reduction Model (PLRM) v1 Road Methodology assumptions regarding the role urban road factors may have on urban roadway water quality condition. • Inform PLRM v1 estimates of the total suspended sediment (TSS) and fine sediment particles (FSP; TSS< 16 µm) Characteristic Runoff Concentrations (CRCs) from roads varying in condition, with inclusion of soluble reactive phosphorous (SRP) analyses as resources allow commercial and residential surfaces, and their variability of condition. Expand and apply the on stormwater treatment BMP (SWT) monitoring dataset to: • Improve the understanding of water quality treatment performance, specifically with respect to FSP, and SRP as resources allow, based SWT type and key design parameters • Inform and improve the PLRM v1 Characteristic Effluent Concentration (CEC) estimates based on SWT type and key design parameters. • Link average annual infiltration rates with measured CHP saturated hydraulic connectivity values to inform PLRM v1 infiltration input requirements. • Apply the PLRM v1 to estimate and compare hydraulic capture among SWTs monitored. *** See www.fs.fed.us/PSW/partnerships/tahoescience for additional objectives. |
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| 08/22/2017 11:46 AM | System | Findings: • Comparison of road specific sampling and mixed land use catchment water quality data support assumptions that the average FSP and TSS concentrations from roads per unit area are significantly higher than the average mixed land use signal. In contrast, the average SRP concentration is lower, suggesting that roads may not be a primary source of SRP to catchment pollutant loads. • Roadway condition (as measured by the concentration of FSP obtained from the portable simulator and/or Road RAM) has a significant seasonal variability with the poorest road conditions consistently observed during winter months. • Poor road condition in the late winter/early spring can result in a substantial downslope water quality risk when rains efficiently transport these pollutants into the stormwater system, requiring treatment and/or retention to prevent FSP from reaching the lake. • Periodic evaluations of road condition from winter 2009 through summer 2011 and records of annual road abrasive application volumes by jurisdictions suggest a trend of decreasing abrasive application and improved winter road condition for water quality. This trend was found despite a sequential increase in winter snowfall totals each of the monitored years. *** See www.fs.fed.us/PSW/partnerships/tahoescience for additional findings. |
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| 08/22/2017 11:45 AM | System | Management Implications: The primary focus of this research was to obtain a representative and reliable stormwater dataset to compare to applicable predictions from the Pollutant Load Reduction Model (PLRM) and provide road specific data to inform the development of Road Rapid Assessment Methodology. These currently are the only tools approved for use by the Lake Clarity Crediting Program (Crediting Program), a program intended to incentivize and measure progress toward the attainment of urban stormwater load reductions established in the Lake Tahoe TMDL. |