Title
Resolution to Ratify City Administrator Approval of Emergency Purchase Order with Hydro Dynamics, Inc. for Repair of Secondary Effluent Pump ($24,687.23)
Memorandum
This resolution seeks ratification of the City Administrator’s approval of an emergency purchase order, by authority granted under Section 1:317 of Ann Arbor City Code, with Hydro Dynamics, Inc. (Hydro Dynamics) in the amount of $24,687.23 for repair of a Secondary Effluent Pump at the Wastewater Treatment Plant (WWTP).
Several months ago, one of the six secondary effluent pumps used at the WWTP failed catastrophically. Due to the nature of the failure and the criticality of the equipment, the WWTP hired Hubbell, Roth & Clark, Inc. (HRC) to perform an engineering study to assess the failed pump and the condition of the remaining five pumps. The results of this study indicated the conditions of all six pumps were generally similar and their replacement was recommended. On April 15, 2013, City Council approved a contract with HRC to design the replacement of the six secondary effluent pumps.
Before Council could approve HRC’s contract, another secondary effluent pump failed in a similar yet not as catastrophic fashion. Plant staff contacted four pump repair facilities seeking quotes for the removal of the pump, evaluation of the pump’s condition and an estimation of the cost to repair the pump. Hydro Dynamics provided the lowest quote in the amount of $6,000.00 and was hired to render these services.
After their investigation, Hydro Dynamics specified that they are able to perform a temporary repair on the pump in about two to four weeks, for $24,687.23. The company believes the temporary repair would satisfy the plant’s intermittent need until new pumps are installed. There is an urgent need to reclaim this lost pumping capacity. With two of the six pumps out of service, the plant risks sending partially treated sewage to the Huron River or flooding the treatment plant.
WWTP staff revi...
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