San Lorenzo River Levee Burrowing Rodent Mitigation - Phase 2 - Grouting

The City of Santa Cruz Public Works Department is seeking contractors to implement a burrowing rodent management program on the San Lorenzo River Levees. This program is anticipated to be a multi-year effort to manage the burrowing rodent population and manage the impacts of burrows in the San Lorenzo River Levees. Burrowing rodents pose a threat to levee stability and management of the burrowing rodent population is needed. The last burrowing rodent mitigation project occurred in 2023. The burrowing rodent management program will be implemented in two phases. Phase 1 consists of a licensed fumigator identifying burrows, flagging burrows, recording the number of burrows in each zone upon the levees and mitigating active burrows through carbon monoxide fumigation. (Fumigator obtained through IFB PW-0226). Phase 2 consists of a licensed contractor grouting the marked and fumigated burrows until they are sealed and covering with dirt. This will be done while following sediment control best management practices (BMPs), exercising caution for sensitive animal and plant species found on the levees and maintaining public levee access to the highest extent possible. Engineer's Estimate: $320,000.