Agenda Item Wording:
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Award a Sole Source Installation of a Sludge Collection System - Authorize a sole source contract for the installation of a sludge collection system at the Visalia Water Reclamation Facility to W.M. Lyles Co. in the amount of $218,842; and appropriate $215,000 from the Wastewater Fund.
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Prepared by:
Ben Litwack, Public Works Manager, (559)713-4671, ben.litwack@visalia.gov
Nick Bartsch, Public Works Director, (559)713-4052, nick.bartsch@visalia.gov
Department Recommendation: Staff recommends that the City Council authorize a sole source contract to W.M. Lyles Co. in the amount of $218,842 for the installation of the sludge collection system at the Visalia WRF and the appropriation of $215,000 from the Wastewater Fund.
Summary:
The Visalia WRF's chain-and-flight sludge collection system in Primary 1 failed during the basin's annual maintenance drain-down, rendering it inoperable. The City previously procured a replacement collector assembly, but installation was deferred due to other maintenance priorities. W.M. Lyles Co., already onsite for ongoing WRF capital improvements, has provided a proposal to complete the installation. Issuing a sole source purchase order allows the City to expedite repairs using an experienced contractor already mobilized under an active capital project.
Background Discussion:
The Visalia WRF operates five primary sedimentation basins that settle suspended solids as part of the wastewater treatment process. Each basin utilizes a chain-and-flight sludge collector system that conveys settled solids to a sludge hopper for pumping to the digesters. Over the past several years, the City has methodically replaced these collector systems, four of which have already been modernized.
Primary 1 remains the only basin with its original system. Approximately one month ago, during annual maintenance activities, the old collector system failed catastrophically when the basin was drained, leaving the basin out ...
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