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ITEM 31
City Council Memorandum Public Works & Utilities Memo No. CP24-001
Date:
July 20, 2023
To:
Mayor and Council
Thru:
Joshua H. Wright, City Manager
Andy Bass, Deputy City Manager
John Knudson, Public Works and Utilities Director
Kimberly Moon, Capital Projects Manager
From:
Sandra Story, Engineering Project Manager
Subject:
Construction Agreement No. WW2206.402, with Layne Christensen Company, for the Tumbleweed Aquifer Storage and Recovery Wells 11 & 12 Drilling
Proposed Motion:
Move City Council award Construction Agreement No. WW2206.402 to Layne Christensen Company, for the Tumbleweed Aquifer Storage and Recovery (ASR) Wells 11 & 12 Drilling, in an amount not to exceed $3,121,710.
Background/Discussion:
In October 2021, the City executed a reclaimed water agreement with Intel Corporation for additional reclaimed water supply. As part of this agreement, it is necessary for the City to convey additional volumes of reclaimed water from the Airport Water Reclamation Facility (AWRF), located at 905 E. Queen Creek Road, to the Ocotillo Water Reclamation Facility (OWRF), located at 3333 S. Old Price Road, for delivery to Intel’s campus. New infrastructure necessary for this conveyance includes additional reclaimed water pipe on both the AWRF and OWRF sites, new pipeline within the City’s rights of way, additional pumping systems at the AWRF site, and the addition of two ASR Wells to recharge and recover water.
ASR wells support the reclaimed water distribution system by storing excess effluent in the upper aquifer when irrigation demands are low. ASR wells are equipped with specialized pumping systems that are capable of recovering this stored effluent from the aquifer when irrigation demands are high, and thus delivering to reclaimed water customers.
The project scope of work consists of the drilling and installation of two ASR wells at the Tumbleweed Recharge Facility, located at 2250 S. McQueen Road. The equipping of the wells will be included in a future contract. The agreement completion time is 360 calendar days following Notice to Proceed.
Evaluation:
Three (3) bids were opened on June 13, 2023. The bid results were as follows:
Contractor
Bid Total
Layne Christensen Company
$3,121,710
Hydro Resources
Non-responsive
KP Ventures
Non-responsive
Financial Implications:
The total project will be funded 20% by the City of Chandler, with the remaining 80% reimbursed by Intel (20%) and the State of Arizona Title 42 funding for public infrastructure per the City’s October 2021 Reclaimed Water Agreement with Intel Corporation (80%).
Fiscal Impact
Account No.
Fund Name
Program Name
Dollar Amount
CIP Funded Y/N
615.3910.6814.0000.6WW690
Wastewater Operating
Reclaimed Water Conveyance (AWRF-OW
$3,121,710
Y
Attachments
Location Map
Agreement - Layne Christensen
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