The flow to and from the six nitrification trickling filters (NTF) is controlled by valves and piping originally constructed with the towers in 1985.  Several of these buried valves are at the end of their service life and need replacing.  Failure of one of these valves would require taking at least one NTF off-line, reducing the plant’s ability to treat nitrogen. If a valve were to fail, plant staff would proceed with an emergency repair.  However, these valves are items not typically in stock and thus the replacement time would be several months.  The proposed project seeks to replace these valves prior to that failure.

The valve replacement project is separated into two phases.  The current proposed work, phase 1, address the most critical of the valves.  This work is in the approved TMWRF 5-year CIP.  An open, competitive bid was held by the City of Reno for this work and there was only one bid received, from K.G. Walters Construction Inc.   The cost sharing for this project will be based on the ownership of the treatment plant and is shown in Table 1, attached.

Council could direct the manager to have staff provide other alternatives.

I move to approve the reimbursement agreement with the City of Reno for the award of Contract to K.G. Walters Construction for the Truckee Meadows Water Reclamation Facility (TMWRF) Nitrification System Control Valve Replacements and Vault Construction - Phase 1 for the base bid in an amount not to exceed $2,054,000.00, with the City of Sparks’ share being $644,339.80.