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TO: Honorable Mayor and Members of the Common Council FROM: Steven M. Gohde, Assistant Director of Public Works/Utilities General Manager DATE: November 12, 2024 SUBJECT: Res 24-578 Approve Amendment No. 1 to Professional Services Agreement with Jacobs Engineering Group, Inc. for Water Filtration Plant Ozone and SCADA Systems Replacement Project Final Design ($248,095)

BACKGROUND

Ozone is used for primary disinfection at the Water Filtration Plant (WFP).  The WFP ozone equipment has been in continuous service since 1999 and obsolescence issues are now prevalent, with some system components no long being manufactured and some technical support services no longer being available.  The efficiency of the ozone system has also decreased, which results in increased costs for electricity and oxygen.  Due to current economic conditions, it will take about one (1) year for replacement ozone system equipment to be delivered to the WFP after approval of the manufacturer’s design drawings.  For this reason, the Department of Public Works decided to separate the equipment purchase and installation contract into separate projects.   Like the ozone equipment, some components of the WFP Supervisory Control and Data Acquisition (SCADA) system have been in service since 1999.  Portions of the SCADA system hardware and software will need to be replaced because they will not be compatible with the new ozone equipment and will not support software updates.  Because the ozone system is so complex and highly-automated, the SCADA system upgrades will be implemented with the new ozone system, so the new ozone system can be supported. Jacobs Engineering Group, Inc. (Jacobs) was selected In July 2023 to provide engineering and shop drawing review services for the purchase and manufacturing of the ozone system equipment.

ANALYSIS

Due to additional services required, Jacobs has requested an amendment to this agreement.  These additional services include additional time and expenses for revisions requested by the contractor for the ozone system (Xylem) to the contract documents, additional required design coordination meetings between Jacobs and Xylem, additional review of design documentation from Xylem, and additional required bid documents due to design changes requested by City staff.

FISCAL IMPACT

Staff has reviewed the amendment and the costs. This amount of this proposed amendment is $248,095. This will raise the total agreement amount to $859,575. Funding is available for this amendment in CIP Account #03221810-7204-65006/Water Capital Fund-Machinery & Equipment-WFP – Ozone Residual Mntr Replcmnt and 03221810-7202-65315/Water Capital Fund/Office Equipment-WFP – SCADA Computers.

RECOMMENDATION

Chapter 12 of the Municipal Code of the City of Oshkosh (Code) provides that professional services of a specialized nature, including engineering services, may be procured without the use of formal, sealed quotes.  I have reviewed this amendment and, in accordance with Section 12-16 of the Code, I am hereby recommending the Common Council approve this amendment.

Attachments RES 24-578 23-19 Jacobs CA #1

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