Broken Arrow City Council
Meeting of: 12-03-2024
Title:
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Consideration, discussion and possible approval of Resolution No. 1617, a Resolution of the Broken Arrow City Council declaring an emergency for the environmental cleaning and restoration of the headworks wetwell pumping structure located at the Lynn Lane Wastewater Treatment Plant; activation of the City's Emergency Operation Protocols, including waiving state and local provisions pertaining to competitive bidding as allowed by law; authorizing an informal bidding process; authorizing the City Manager to execute emergency contracts as necessary for repairs and any subsequent critical events; providing for the termination and extension of the provisions of this resolution; and directing the City Manager to carry out all applicable provisions
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Background:
On Saturday, November 9, 2024, City plant staff observed difficulties in pumping operations with the wet well submersible pumps during a significant high in-flow event resulting from the excess rain upstream of the Lynn Lane Wastewater Treatment Plant. On Monday November 11, 2024, plant staff reported three of the five main submersible pumps that regulate flows into the plant were offline and inoperable. Since this event, plant operations have been operating off retrofitted backup pumps, and emergency rental hydraulic submersible pumps tied in tandem with an in house super 8 diesel pump to provide up to 18 MGD capacity. The rental pumps and accessories have been procured through United Rentals pumping division with current rentals have been procured under the sourcewell contracting and total costs will not be known until the headworks wetwell impacts are corrected and the existing pumps are back online.
It was discovered that due to upstream sewer line sink holes and excess inflow and infiltration, the wet well has become impacted by a large volume of soil and debris. This soil and debris are the direct cause of the pumps becoming inoperable th...
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