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Al Tahoe, Project 2

Project Details

Al Tahoe, Project 2

The Al Tahoe Erosion Control Project 2 (Project) is located on the South Shore of Lake Tahoe (Lake), in the City of South Lake Tahoe, west of U.S. Highway 50. The Project area is bordered by Tallac Avenue to the south, Lakeview Avenue and Lake Tahoe to the north, Berkeley Avenue to the west, and Oakland Avenue to the east. The Project area encompasses more than 45 acres of dense residential development in close proximity to the Lake. Primary concerns in the project areas are bare, compacted, and eroding road shoulders arising from parking on the narrow residential streets that transport fine sediment and other pollutants to the Lake.

Opportunities

The Environmental Improvement Program (EIP) lists the project as EIP Project Number 696. In 2007, the City of South Lake Tahoe (City) completed an analysis of existing conditions that identified erosion control needs and prioritized treatment areas. The City subsequently contracted with a consulting team to complete planning and design documents. For planning and implementation purposes, the original Al Tahoe ECP was split into Projects 1 and 2, addressing different portions of the neighborhood. The Al Tahoe ECP 1 completed construction in October 2010.

In February 2011, the Al Tahoe ECP 1 received the Tahoe Regional Planning Agency’s Best in the Basin Award for an Erosion Control Project as an outstanding innovation in environmental streetscape. The Al Tahoe ECP 1 won this award for its unique road shoulder infiltration designs that allow for seasonal parking and for the installation of an advanced stormwater quality treatment filter that treats stormwater prior to entering the Lake. Residents in the Al Tahoe ECP 1 area are very pleased with the function and appearance of the water quality improvements installed to date. This Project follows the same designs as Project 1.

Approach

Currently, stormwater runoff from streets and adjacent road shoulders in the Project area discharges directly into Lake Tahoe without any treatment. Stormwater runoff transports pollution containing fine sediment and nutrients that have detrimental effects on the Lake’s water clarity. The Project will stabilize and protect eroding roadway shoulders, increase infiltration, and convey stormwater runoff to an advanced treatment filter prior to discharging into the Lake. Project design utilizes road shoulder infiltration pads that allow for parking during the summer months while reducing stormwater flows to the Lake.

Status

Construction is scheduled to begin in August 2011 and be completed in 2012.