Colgate Penstock Hillslope Erosion and Temporary Stabilization

Yuba Water Agency is accepting Invitations for Bid for work consisting of construction of temporary stabilization and erosion control measures to address conditions created by the Penstock rupture that occurred on February 13, 2026. The project intends to minimize the potential for additional slope degradation, sediment discharge, and impacts to environmental resources while long-term repair and restoration plans are developed and evaluated. This project does not include the reconstruction of the penstock. Proposed activities include localized grading and earthwork; installation of temporary erosion and sediment control Best Management Practices (BMPs); placement of temporary slope stabilization materials; construction of a large rock buttress; drainage and runoff management repairs; revegetation and site stabilization treatments; access improvements as necessary to support construction and monitoring activities; and implementation of environmental protection measures. The work may require the use of specialized construction equipment to access and traverse steep slopes. Changes from prior bid REF # 2026-005 1. Addendum 1 from prior bid is incorporated as Exhibit J Frequently Asked Questions. 2. Addendum 2 is no longer relevant. 3. Addendum 3 from prior bid is incorporated as new drawings and technical specifications and no changes have been made to either document since released. 4. Section 01305, 1.04 A.1. has been updated. 5. Exhibit B removed not relevant to this rebid.