The Cache Creek Conservancy is requesting proposals from qualified applicants for the Gordon Slough Erosion Repair project. This project is funded by FEMA and will follow federal contracting guidelines. The following Scope of Work describes the work to be done . To be considered for the project applicants must attend a site visit on Thursday, June 30, at 9 a.m. Final proposals are due July 11, 2022, by 3 p.m. and the anticipated contract award date is July 15 , 2022. The Conservancy anticipates a project start date of July 31, 2022, pending permit approvals.
It is strongly suggested that each prospective bidder review the bid documents prior to the pre-bid conference, and pay particular attention to the scope of work and endangered species monitoring and mitigations measures required for this project.
Proposals should be sent to Nancy Ullrey at email@example.com and any questions about the project or statement of work should be sent to Lynne Haralson, habitat restoration specialist at firstname.lastname@example.org.
The Gordon Slough Erosion repair project is to repair erosion and slumping damage along the Salisbury Spillway channel and north levee due to winter storm flood flows in 2019. An estimated loss of 1,456 cubic yards of soil occurred over approximately 60 linear feet, 131 feet wide, and 5 feet high (approximately 7,500 square feet or 0.17 acres). Included in this project is a requirement for biological services consisting of monitoring, mitigation measures, and reporting.
Cache Creek Conservancy needs a contractor to install 735 cubic yards of compacted soil within the spillway channel and levee slope and to mitigating future erosion potential through the installation of 1,260 tons of 18 inch facing stones, 1,140 tons of half-ton rip-rap, 2,600 tons of quarter-ton riprap, and the planting of willows as natural erosion control.
Contract includes removing some overgrown invasive vegetation within the Salisbury Spillway channel to improve conveyance. Incidental non-native vegetation and tree removal in the remainder of the project area may occur, including access along the levee temporarily disturbing some existing vegetation or require limited vegetation or tree trimming. Tree trimming would only occur where necessary for equipment access along the levee. No elderberry shrubs will be disturbed by this project.
Construction of the project will last for approximately three weeks, 8-10 hours per day. All project activities are planned to occur during the dry season, low flow period (August 1 – September 30), to reduce the potential for adverse effects to aquatic-dependent species. The repair is immediately downstream of the Gordon Slough dam flow control structure, so water diversion will not be necessary. Some pools remaining within the spillway channel may need to be dewatered to complete the repairs.
Proposals must address the Biological Services component detailed in the U.S. Fish and Wildlife Section 7 consultation. The successful bidder will include the services of a qualified biologist for pre-construction surveys and biological monitoring services (“Services”) for General Avoidance and Minimization Measures (GMM) and Species-Specific Conservation Measures (SSCM) for the following species:
o Giant garter snake (GGS)
o California red-legged frog (CRLF)
o California tiger salamander (CTS)
o Valley elderberry longhorn beetle (VELB)
CCC estimates up to 960 survey and monitoring hours would be required.
The qualified biologists resume must be submitted to the CCC for review and approval by the wildlife agencies 30 days prior to the start of construction. Biological monitor(s) shall provide tools and equipment necessary such as personal protective equipment appropriate for an active construction site, spotting scope, binoculars, field journal, camera, etc.