Big Chico Creek Erosion Repair Project (Capital Project No. 50497)

The Big Chico Creek Erosion Repair Project (Capital Project No. 50497) is a series of bank stabilization and erosion repair efforts managed by the City of Chico in Butte County, California. The project focuses on three primary locations: the Rose Avenue bridge crossing, the Warner Street bridge crossing, and the western creek bank near the intersection of Manzanita and Vallombrosa Avenues. The scope of work includes the removal of riparian vegetation, regrading of eroded undercut areas, and the installation of rock slope protection (RSP) to address scouring caused by heavy winter storms. Key deliverables include the implementation of temporary water diversions for in-water work and the revegetation of disturbed areas using native or approved non-invasive species. The project is subject to strict environmental and regulatory compliance, having been reviewed by the California Department of Fish and Wildlife and the Central Valley Flood Protection Board. All work must adhere to a Mitigated Negative Declaration and a Mitigation Monitoring and Reporting Program to protect critical habitats for CCV steelhead and CVSR Chinook salmon. Critical operational constraints include a restricted in-water work window from July 15th to September 30th, mandatory pre-construction nesting bird surveys between February 1st and September 30th, and a 30-day curing period for poured concrete excluded from the channel. Additionally, the contractor must follow specific protocols for the discovery of cultural resources or human remains and adhere to city-mandated noise restrictions for heavy equipment.