The proposed Sunnyvale East and West Channels Flood Protection Project (Project) would provide flood protection for residents, businesses, and infrastructure along a 9.5 mile length of the Sunnyvale East and West channels in the city of Sunnyvale. The proposed project consists of developing new flood protection infrastructure necessary to provide 100-year riverine flood protection, developing water quality improvements where possible, and making recommendations for recreational improvements. The proposed project would include floodwalls, levee and maintenance road improvements, bridge/culvert modifications, and sediment removal. The Project also includes repairing and stabilizing several stream bank sections that are unstable and actively eroding.
Pursuant to the California Environmental Quality Act, the water district, as the lead agency for the proposed project prepared a Draft Environmental Impact Report (DEIR) and a Final Environmental Impact Report (FEIR) to evaluate environmental impacts of the proposed Project.
Draft Environmental Impact Report
The Draft EIR was published and circulated between November 1, 2013 and December 15, 2013. The public review period was extended to February 21, 2014 to accommodate additional review time by the public agencies. The DEIR identified potentially significant environmental impacts associated with aesthetics, air quality, biological resources, cultural resources, geology/soils, greenhouse gas emissions, hazardous materials, hydrology/water resources, noise and vibration, land use, public utilities, recreation, and traffic. The majority of impacts were determined to be less than significant after the implementation of mitigation measures proposed for the Project. Construction impacts related to violation of applicable air quality and noise/vibration standards were determined to be significant and unavoidable even after implementation of air quality and vibration mitigation measures.
Draft Environmental Impact Report
Appendix A - Notice of Preparation
Appendix B - Planning Study Report
Appendix C - Stream Maintenance Program Update
Appendix D - Mitigation Monitoring and Reporting Program
Appendix E - Cultural Resources Technical Report
Appendix F - Candidate Key Observation Point Locations
Appendix G - Air Quality and Greenhouse Gas Emissions Calculations
Appendix H - Geotechnical Studies
Appendix I - 2007 Hazardous Materials Report
Appendix J - Construction Noise Calculations
Appendix K-1 - Traffic Construction Trip Calculations
Appendix K-2 - Traffic LOS Analysis for Caribbean Bridge Replacement
Appendix L - Special-Status Plant Species Considered but Rejected for Occurrence in the Project Area
Appendix M - Detailed Descriptions of Special-Status and Locally Significant Plant Species Potentially Occurring in the Project Area
Appendix N - Detailed Descriptions of Special-Status Wildlife Species Potentially Occurring in the Project Area
Appendix O - Preliminary Delineation of Wetlands and Other Waters
Appendix P - Chapter 3.3 Biological Resources Figures: Soil Maps, West Channel Habitat Impacts Maps, East Channel Habitat Impacts Maps
Final Environmental Impact Report
The FEIR responds to public comment received on the Draft EIR during the public review period, as well as reflects changes to the Draft EIR made to address comments received during public circulation. The Final EIR is available on August 25, 2014.
The Final EIR, Draft EIR and all related documents can be reviewed on any water district business day between the hours of 8 a.m. and 5 p.m., at the Headquarters building located at 5700 Almaden Expressway, San Jose, CA 95118.
Final Environmental Impact Report (August 2014)
For information about the environmental process, contact Erika Carpenter, Environmental Planner, Santa Clara Valley Water District at (408) 630-2729.
Tel: 408-630-2729, Santa Clara Valley Water District, 5750 Almaden Expressway, San Jose, CA 95118