Agenda Item Wording:
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Approve a Change Order for a Blower Rental - Approve change order no. 1 with Aerzen Rental Solutions in the amount of $56,680 for the extended rental of an aeration basin blower at the Water Reclamation Facility and transfer $56,680 from the Wastewater Fund.
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Prepared by:
Ben Litwack, Public Works Manager, ben.litwack@visalia.gov, 559-713-4671
Nick Bartsch, Public Works Director, nick.bartsch@visalia.gov, 559-713-4052
Department Recommendation: Staff recommends the approval of change order no. 1 with Aerzen Rental Solutions under P04375 in the amount of $56,680 for the extended rental of an aeration basin blower at the Water Reclamation Facility (WRF) and transfer $56,680 from the Wastewater Fund.
Summary:
P04375 authorized a two-month rental of an Aerzen blower beginning on September 24, 2025, to maintain adequate aeration capacity at the Visalia Water Reclamation Facility (WRF) during multiple blower and VFD failures. Repairs remain in progress, and additional rental time is needed to ensure the facility continues to meet nitrogen and biochemical oxygen demand (BOD) permit limits. Staff is requesting approval for up to two additional 28-day rental periods at $28,340 per period, with pro-rated refund if returned early. This extension will provide operational stability while long-term blower and VFD improvements are evaluated.
Background Discussion:
P04375 authorized a two-month rental of an Aerzen blower beginning on September 24, 2025, to ensure adequate aeration capacity at the WRF. Due to multiple blower and VFD failures, the rental unit has been essential for maintaining dissolved oxygen levels in the aeration basins to support effective nitrogen and BOD removal. While repairs to the City's blower systems are underway, additional time is required before a sufficient number of permanent blowers can be brought back online to reliably meet treatment requirements.
Staff is requesting approval of a change order for up to...
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