Details
Lake Tahoe EIP
Performance Measure Info Sheet
Fine Sediment Load Reduction Achieved
Performance Measure 1 - Fine Sediment Load Reduction Achieved
Definition The estimated amount of fine sediment prevented from entering Tahoe Basin urban stormwater, based on the guidelines laid out in the Lake Clarity Crediting Program Handbook. Fine sediment load is quantified in terms of the number of sediment particles with diameter of less than 16 micrometers. Reduction of fine sediment load benefits Lake Tahoe's clarity.
Units pounds
Primary Program Stormwater Management
Guidance
Critical Definitions

Catchment-scale tracking – Pollutant load reductions are tracked at the scale of a water quality catchment rather than on a project-by-project basis. This approach is in contrast to most other EIP PMs, which are tracked in relationship to specific projects. This difference in approach is necessary because the currently available Tahoe-customized load estimating tools are scaled to the catchment so that they can provide the most accurate load estimates for urban jurisdictions. Catchment-scale tracking allows reporting of accomplishments under the EIP Stormwater Management subprogram but will not allow specific action priorities (e.g. Reducing Stormwater Pollution from Local Roads) to be resolved, because of limitations in the current reporting methods. Additionally, load reductions are only tracked for the urban portion of catchments; non-urban load reductions are not currently addressed.

Fine sediment particles – Inorganic sediment particles with diameter of less than 16 micrometers

Load reduction – The difference between the estimated average annual amount of pollutants entering Lake Tahoe under standard baseline conditions (as defined in the Lake Clarity Crediting Program Handbook) and the estimated average annual amount of pollutants entering the lake under current conditions resulting from water quality improvement projects.

Urban jurisdiction – These include counties, state highway departments and cities within the Tahoe Basin

Accounting Period and Scale

Fine sediment load reductions are tracked annually by each jurisdiction, based on information from the Annual Credit Summary generated by the Credit Accounting Platform (CAP). Load reductions are calculated at the catchment scale.

Project Reporting

This PM tracks load reduction achieved based on actual conditions and credits awarded each year, and not on estimated load reductions anticipated in the Catchment Credit Schedule. A project is reportable to the EIP when the catchment in which it is located is registered in the Accounting and Tracking Tool according to the guidelines described in the Lake Clarity Crediting Program Handbook.

Subcategories
Subcategory Subcategory Options
Jurisdiction
California Department of Transportation, City of South Lake Tahoe, Douglas County, NV, El Dorado County, CA, Nevada Department of Transportation, Placer County, CA, Washoe County, NV
Pollutant Control Type
Road Operations, Treatment/Parcel BMPs
Performance Measure Results
Definitions

The estimated amount of fine sediment prevented from entering Tahoe Basin urban stormwater, based on the guidelines laid out in the Lake Clarity Crediting Program Handbook. Fine sediment load is quantified in terms of the number of sediment particles with diameter of less than 16 micrometers. Reduction of fine sediment load benefits Lake Tahoe's clarity.

Notes
By: Pollutant Control Type
Show Results: By Year
By: Jurisdiction
Show Results: By Year
Programs
EIP Program Is Primary EIP Program
01.01 - Stormwater Management
Background