SCH Number 2005062129

Project Info

Title

I-580 Isabel Avenue Interchange Construction Project

Description

This project involves construction of a residential and commercial development with a portion of a regional trail. This Amendment 1 includes widening of Portola Avenue as described in the I-580/Isabel Interchange Construction Project mitigated negative declaration. The Portola Avenue widening will include the removal of concrete and pavement associated with existing Portola Avenue, and will require grading 1.54 acres of upland habitat that now supports ruderal and non-native annual grassland habitat. In addition, Portola Avenue in the proposed widening section of road now supports multiple CA tiger salamander tunnels that provide migratory pathways under Portola Avenue in a north/south direction. Three of these tunnels are routed from north of Portola Ave. widening project to prevent migrating the Covered Species from entering a developed area. The project will result in additional permanent impacts to 1.54 acres of CA tiger salamander (Ambystoma californiense) habitat. The project is expected to result in incidental take of CA tiger salamander which are designated as a threatened species under CESA. The ITP referenced above as issued by CDFW authorizes incidental take of species list under CESA that may occur as a result of Project implementation.

8 documents in project