Rattlesnake Dam Outlet Pipe Rehabilitation

Description: Irvine Ranch Water District is soliciting electronic lump-sum bids from prequalified bidders for Invitation 12101, covering spray-in-place pipe lining of existing 30-inch and 24-inch outlet pipe, replacement of three butterfly valves and actuators, valve-stem and appurtenance improvements, new air-vent piping, and removal of an existing outlet structure. The estimated bid value is $4,424,000, with a mandatory onsite pre-bid meeting and following site visit on August 27, 2026, and bids due September 17, 2026 at 2:00 PM PDT. The opportunity is a construction procurement rather than a grant, and prequalification for the bidders list is closed.