CITY COUNCIL AGENDA ITEM
Memo Date: March 29, 2021
Agenda Date: April 27, 2021
Prepared By: Sean B. McFarland, Water Treatment Manager
Through: John A. Walsh, P.E., Utilities Director
Requested Action:
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To Approve Participation in a Cooperative Purchase Agreement with Vortex Services, LLC, Houston, Texas, to Provide Rehabilitation Services to the Existing Sulfuraetors at the Wewahootee Water Treatment Plant Utilizing Houston-Galveston Area Council National Cooperative Purchasing Contract 018-00382 Effective July 1, 2018 through June 30, 2021 in the amount of $197,950; To Approve a Resolution Authorizing the City Manager to Approve Change Orders in an Amount Not to Exceed $19,795 (approximately 10%) for a Project Total of $217,745, Project No. WS21WS; To Approve a Resolution Amending the FY2021 Budget; BAF # 21-071-A
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BACKGROUND:
The two circular concrete structures supporting the aluminum domes on top of the sulfuraetors at the Wewahootee plant are showing signs of deterioration due to the amount of hydrogen sulfide (H2S) gas that they have been exposed to over time during the sulfur stripping process. To protect the existing concrete and prevent further degradation, an epoxy coating/lining impervious to H2S gas must be applied.
Sewer manholes are also subjected to high levels of H2S gas, and epoxy lining and geopolymer products are used to protect these structures. Since June of 2019, the City of Cocoa has utilized Vortex Services, LLC for the sewer manhole lining and rehabilitation program. City staff has determined that due to the success of this program and material, the same application process can be used to protect the concrete on top of the sulfuraetors at the Wewahootee plant.
In order to protect these critical structures, staff is requesting the continued use of the H-GAC Buy National Cooperative Purchasing Contract 018-00382. It should be noted that on December 13, 2011, City Council originally approved the participation ...
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