Zone 6, Line F, Agua Caliente Creek Restoration Between I-680 and Curtner Road, in Fremont, Alameda County.
Summary
SCH Number
2023070646
Public Agency
Alameda County Flood Control and Water Conservation District
Document Title
Zone 6, Line F, Agua Caliente Creek Restoration Between I-680 and Curtner Road, in Fremont, Alameda County.
Document Type
NOE - Notice of Exemption
Received
Posted
7/31/2023
Document Description
The proposed project is located on the Zone 6 Line F (Agua Caliente Creek) storm drainage channel located between Curtner Road on the east and the northbound exit ramp for I-680 to Mission Boulevard on the west., City of Fremont, Alameda County. The project involves restoring an approximately 332-foot-long section of Zone 6, Line F (Agua Caliente Creek) to a more natural state by removing the existing concrete lined trapezoidal channel and restoring it to a natural channel with step pool habitat and creating adjacent shaded riparian canopy. The existing concrete lined and walled channel will be replaced with a series of step pools, constructed of boulders and cobbles that connects the existing lower and upper culverts. The restored channel will have planted native riparian vegetation and native upland tree plantings. The 0.5ft.-2ft. deep steps will be spaced every 30 to 45 feet. The restored creek channel will have significantly lower velocities with the same flow capacity. The top of bank will be approximately 50 feet wide with a new channel bottom width up to 15.5 feet. Approximately 0.4 acres will be restored with native seeds and tree species to provide shaded canopy. All excavation below the existing ground surface will be on the northwest side (north bank) of the current channel. The proposed channel widening will generate approximately 2,400 cubic yards of excavated material. The existing gravel maintenance road along the south bank will remain. In addition, the culvert entrance just east of Curtner Road may have additional minor repairs to repair erosion damage. The purpose of this project is to restore the constructed channel to a more natural meandering creek with increased habitat values, minimize the potential of future embankment instability, and reduce maintenance over time while providing flood protection.
Contact Information
Name
James Yoo
Agency Name
Alameda County Flood Control District
Job Title
Associate Environmental Compliance Specialist
Contact Types
Lead/Public Agency
Phone
Email
Location
Cities
Fremont
Counties
Alameda
Regions
Citywide
Cross Streets
Between I-680 and Curtner Blvd in the City of Fremont, Alameda County
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
(Sec 15301) Existing Facilities & (Sec 15304) Minor Alterations
Reasons for Exemption
Existing Facilities, consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of use beyond that existing at the time of the lead agency’s determination and Minor Alterations (a) There would be no significant adverse impact on endangered, rare or threatened species or their habitat pursuant to section 15065, (b) There are no hazardous materials at or around the site that may be disturbed or removed, and (c) The project will not result in impacts that are significant when viewed in connection with the effects of past, current or probable future projects.
County Clerk
Alameda
Attachments
Notice of Exemption
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