Palo Alto Flood Basin Tide Gate Structure Replacement Project

Summary

SCH Number
2020090237
Lead Agency
Santa Clara Valley Water District
Document Title
Palo Alto Flood Basin Tide Gate Structure Replacement Project
Document Type
MND - Mitigated Negative Declaration
Received
Project Applicant
Santa Clara Valley Water District
Present Land Use
Public Conservation Land / Recreational Trail

Document Description
Santa Clara Valley Water District (Valley Water) is proposing to replace the existing Palo Alto Flood Basin tide gate structure in order to maintain flood protection in the communities surrounding the flood basin and along the U.S. Highway 101 corridor. The Project would involve construction of a new 132-foot-wide tide gate structure slightly inboard (upstream) and southeast of the existing 113-foot-wide deteriorating tide gate structure, removal of the existing tide gate structure and levee, and construction of a new levee that ties into the new tide gate structure. Construction of the Project would occur in two phases with separate dewatering systems to allow continued operation of a tide gate throughout construction. Specific project elements include up to 2.3 miles of levee trail resurfacing (for access); installation of two sheet pile dewatering systems; construction of the new tide gate structure on a concrete foundation supported by drilled piles; demolition and removal of the existing tide gate structure and levee; and construction of a new levee connecting to the new tide gate structure. Construction would span up to 5 years but would be limited to September 1 through January 31 annually to avoid and minimize impacts on biological resources.

Contact Information
Alex Hunt
Santa Clara Valley Water District
5750 Almaden Expressway
San Jose, CA 95118

Phone : (408) 630-3007
ahunt@valleywater.org

Location

Coordinates
37°27'20.3"N 122°6'3.2"W
Cities
Palo Alto
Counties
Santa Clara
Regions
Northern California San Francisco Bay Area
Cross Streets
n/a (Adobe Creek Loop Trail)
Zip
94303
Total Acres
8.9
Parcel #
008-05-005
State Highways
None
Railways
None
Airports
Palo Alto Airport
Schools
None
Waterways
San Francisco Bay, Palo Alto Flood Basin
Township
6S
Range
2W
Section
9
Base
Mt.Diabo

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Tide Gate Replacement)(n/a MGD)
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Greenhouse Gas Emissions Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Tribal Cultural Resources Vegetation Water Quality Wetland/Riparian Wildlife Land Use Cumulative Effects
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Fish and Wildlife, Marin Region 7 California Department of Parks and Recreation California Department of State Parks, Division of Boating and Waterways California Department of Transportation, District 4 California Department of Transportation, Division of Aeronautics California Department of Water Resources California Governor's Office of Emergency Services California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California State Lands Commission San Francisco Bay Conservation and Development Commission State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Water Quality State Water Resources Control Board, Division of Water Rights State Water Resources Control Board, Divison of Financial Assistance California Regional Water Quality Control Board, San Francisco Bay Region 2

Attachments

Environmental Document
NOI_PaloAltoTideGate_Final   PDF 23 K OPR_DocSubmittal_SummaryForm_Final   PDF 593 K PATG_DraftMND   PDF 13366 K PATG_DraftMND_Appendices   PDF 23489 K
NOC
NOC_PaloAltoTideGate   PDF 243 K
State Comments
2020090237_RWQCB Comment   PDF 454 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

Download CSV Download All Attachments New Search Print