CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
title
Approve the award of Change Order #1 to Contract 25-074, Field Services for Tollway Substation Transformers, to Transfluid Services, Inc. for an amount not to exceed $14,500 and a total award of $312,269
body
DEPARTMENT: Electric Utility
SUBMITTED BY: Raheel Arshed, Deputy Director
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
The Electric Utility (Utility) is responsible for maintaining electric service to approximately 63,000 residential and commercial customers. A key component of the 16 electrical substations is transformers that step the 138kV transmission voltage down to lower voltages. At the Tollway Substation (Tollway), the Utility owned a transformer referred to as 30XA, which failed in September of 2024. This transformer was built in 1971 and was responsible for stepping down voltage from 138kV to 34.5kV and 12.47kV, respectively.
In June 2025, the City Council awarded Contract 25-074, Field Services for Tollway Substation Transformers, to return the system to normal configuration. This project included moving an underutilized “sister” transformer known as 10XA, also built in 1971, from the Westside Substation (Westside) to Tollway. Moving 10XA from Westside to Tollway was essentially a like-for-like replacement, restoring Tollway to pre-failure conditions.
The Westside transformer vacancy was filled with a spare transformer stored at the Route 59 Substation. The spare transformer placement at Westside restored the 12kV system to normal, while abandoning the rarely used 34kV source at Westside. While not a like-for-like replacement, commissioning the spare transformer at Westside restores normal functionality to the substation. The spare transformer will be replaced with the one that was procured in June of 2025, and will take approximately 30 months to build.
DISCUSSION:
Change Order #1 is requested to address unforeseen field conditions that could not have been reasonably identified before the...
Click here for full text