San Lorenzo Creek (Line B) Storm Damaged Bank Permanent Restoration Behind 1950 and 1980 Wingate Way in Hayward
Summary
SCH Number
2024080564
Public Agency
Alameda County Flood Control and Water Conservation District
Document Title
San Lorenzo Creek (Line B) Storm Damaged Bank Permanent Restoration Behind 1950 and 1980 Wingate Way in Hayward
Document Type
NOE - Notice of Exemption
Received
Posted
8/14/2024
Document Description
The storm damage along this portion of San Lorenzo Creek, behind 1950 and 1980 Wingate Way in Hayward, occurred in January 2023 during the unprecedented storm events and the County Board of Supervisors declared countywide emergency. In summer/fall of 2023, the Alameda County Flood Control and Water Conservation District (District) designed and constructed an emergency rock riprap stabilization project to temporarily mitigate danger to life, health, and property during the 2023-2024 and 2024-2025 rain seasons. The District is ready to construct the permanent restoration that consists of: modifying the existing rock slope protection (RSP) mixture along the existing retaining wall to extend approximately 70 feet behind 1950 and 1960 Wingate Way; constructing a total of approximately 340 feet of vegetated RSP along the toe of the north and south banks; constructing two rock riffle grade control features approximately 45 feet long and 25 feet wide; removing invasive vegetation; and revegetating banks with native plants and seeds. Existing rock material from the emergency project will be utilized for the restoration project, as feasible. The creek channel would be dewatered by gravity or mechanical pumps along with cofferdams. The purpose of this project is to stabilize and revegetate the channel corridor from the emergency storm damage project, and improve channel resiliency from future storm events.
Contact Information
Name
Moses Tsang
Agency Name
Alameda County Flood Control and Water Conservation District
Job Title
Deputy Director of Flood Control
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Hayward
Counties
Alameda
Regions
Citywide
Other Location Info
Behind 1950 to 1980 Wingate Way
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1, Section 15301
Reasons for Exemption
The proposed project involves the repair, maintenance, or minor alteration to existing structures and facilities involving negligible expansion of use beyond that existing at the time of the lead agency’s determination.
County Clerk
Alameda
Attachments
Notice of Exemption
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