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ITEM 30 |
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City Council Memorandum Public Works & Utilities Memo No. UA25-027
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| Date: |
November 4, 2024 |
| To: |
Mayor and Council |
| Thru: |
Joshua H. Wright, City Manager
Andy Bass, Deputy City Manager
John Knudson, Public Works and Utilities Director |
| From: |
Jeremy Abbott, Public Works & Utilities Assistant Director |
| Subject: |
Agreement No. PW3-925-4631, Amendment No. 4, with Hazen and Sawyer, P.C., for the Water System Upgrades Program Consultant Services |
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| Proposed Motion: |
| Move City Council approve Agreement No. PW3-925-4631, Amendment No. 4, with Hazen and Sawyer, P.C., for the Water System Upgrades Program Consultant Services, increasing the agreement amount by $11,598,345. |
| Background/Discussion: |
The Pecos Surface Water Treatment Plant (PSWTP), located at 1475 East Pecos Road, was put into service in 1989. The current capacity of the PSWTP is 60 million gallons per day (MGD). The water distribution system includes over 1,200 miles of water mains, 19 reservoir and booster sites, and 30 active drinking water wells, and also receives water from the Santan Vista Water Treatment Plant in Gilbert (owned jointly by the City of Chandler and the Town of Gilbert).
The Water System Upgrades Program is intended to leverage outside consultants as extensions of staff to expedite the short and long-term planning for improvements at PSWTP. On October 19, 2023, City Council approved Agreement No. PW3-925-4631 with Hazen and Sawyer, P.C., for the Water System Upgrades Program consultant services. Through the work to date, five major process improvements have been identified to enhance the maximum process and hydraulic throughput of the PSWTP. These improvements are structural rehabilitation of filters 9 through 12, post-filter granular activated carbon contactors, chlorine dioxide facility, equalization pump improvements, and a new dewatering building with modernized and energy efficient equipment. Amendment No. 4 includes program management, preliminary and detailed design, permitting assistance, and construction management services for the structural rehabilitation of filters 9 through 12. An additional 410 calendar days have been added for a revised total of 860 calendar days to final completion, following the Notice to Proceed.
A related Pre-Construction Services Construction Manager at Risk Contract and a Construction Manager at Risk Contract with Archer Western Construction, LLC, for the Water System Upgrades Program, are also scheduled for this City Council meeting. |
| Evaluation: |
| On October 19, 2023, City Council approved an agreement with Hazen and Sawyer, P.C., for the Water System Upgrades Program consultant services, in an amount not to exceed $695,720. City Council approved Amendment No. 1 on February 22, 2024, adding additional services, extending the term of the agreement, and increasing the amount of the agreement by $149,680. Amendment No. 2 added additional services, extended the term of the agreement, and increased the amount of the agreement by $89,720, and was administratively approved. Amendment No. 3 added additional services, extended the term of the agreement, and increased the amount of the agreement by $98,750, and was administratively approved. Amendment No. 4 includes additional services, extends the term of the agreement, and increases the amount of the agreement by $11,598,345. Staff recommends this amendment to the agreement. |
| Financial Implications: |
| This Amendment No. 4 is in the amount of $11,598,345, for a revised total contract amount not to exceed $12,629,215. |
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| Fiscal Impact |
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