AGENDA CAPTION:
Title
Consider approval of Resolution 2023-14R, approving Change Order No. 4 for the Surface Water Treatment Plant (SWTP) Improvements construction contract in the total amount of $234,488.64, the City’s portion being $117,244.32 for electrical modifications; authorizing the City Manager or her designee to execute the appropriate documents relating to the Change Order on behalf of the City; and declaring an effective date.
Body
Meeting date: January 17, 2023
Department: Engineering/CIP, Shaun Condor, Director
Amount & Source of Funding
Funds Required: (Total = $234,488.64) Split = COSM $117,244.32 / GBRA $117,244.32
Account Number: COSM = 52036369-70200 / GBRA = 52040363-70190
Funds Available: $722,373.47
Account Name: C741 (ARWA Delivery Improvements)
Fiscal Note:
Prior Council Action: R2021-101 Awarding Contract to Archer Western & R2022-536 for Change Order #2
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Background Information:
Change order 4 for the Surface Water Treatment Plant (SWTP) Improvements construction contract (221-177) with Archer Western Construction in the total amount of $234,488.64 (City’s responsible for $117,244.32) is for switchgear modifications, including an expedited schedule for delivery, to convert the plant to the 3-wire system
The project scope includes connecting the existing SMTXU switchgear and emergency generator to the Guadalupe Blanco River Authority (GBRA) switchgear and generator to provide an extra layer of redundancy during emergency situations. In order to make this connection safe, simple, and reliable, we must convert the existing SMTXU switchgear configuration to a 3-wire system which matches the GBRA configuration. The costs for this solution is approximately $77,000. The remainder of the change order costs is for an expedited schedule to keep the project on track and avoid daily fees owed to Archer Western.
Alliance Regional Water Authority (ARWA) has leased groundwater rights in the eastern Caldwell County and will deliver treated Carrizo Aquifer groundwater to various Project Sponsors, including the City of San Marcos, beginning in 2023. The City will maintain two delivery points for the new ARWA water supply, a ground water storage tank at the City’s surface water treatment plant (SWTP) and a new elevated storage tank in the Blanco Vista subdivision. The improvements at the SWTP proposed for this project are needed to take delivery of the new ARWA water supply to the City. This project includes improvements for the City, ARWA & the Guadalupe-Blanco River Authority (GBRA) under ILAs which define financial participation in the design and construction of the improvements.
The $13.5 million construction project is on track to be completed by the summer of 2024. The approximate cost sharing of this contract is split as shown: 7% for ARWA, 48% for GBRA and 45% for COSM
Council Committee, Board/Commission Action:
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Recommendation:
Staff recommends approval of change order #4 in the amount of $234,488.64.