Item 9 - 6th Street Chilled Water Transmission Line Extension — original pdf

Backup

Posting Language ..Title Authorize an additional expenditure for the construction contract for the Sixth Street Chilled Water Transmission Line Extension for Austin Energy with Primoris Energy Services Corporation, to increase the amount by $5,648,400 for a revised total contract amount not to exceed $28,242,001. Funding: $28,242,001 is available in the Capital Budget of Austin Energy. 25-2393 ..Body Lead Department Austin Financial Services. Managing Department Austin Energy. Amount and Source of Funding Funding is available in the Capital Budget of Austin Energy. Procurement Language: Additional Authorization. MBE/WBE: This request is for additional expenditure authority only. MBE/WBE goals will be established if a change order is requested. Prior Council Action: November 21, 2024 - Council approved a contract with Primoris Energy Services Corporation for 6th Street Chilled Water Transmission Extension. For More Information: Direct questions regarding this Recommendation for Council Action to the Austin Financial Services - Central Procurement at FSDCentralProcurementRCAs@austintexas.gov or 512-974-2500. Council Committee, Boards and Commission Action: November 10, 2025 - To be reviewed by the Electric Utility Commission. Additional Backup Information: The downtown chilled water system supports 48 buildings, with plans to integrate two new buildings by mid- year 2026. The system stretches over eight miles and cools more than 18 million square feet in downtown Austin. The additional expenditure is needed due to the discovery of building tie backs on 6th street requiring a switch to a larger wooden box tunnel method. The goal of the project is to add 1,727 feet of new chilled water pipes, both supply and return, inside a 72-inch pipe casing. The work will happen in the public right-of-way, from 400 W 6th Street to 101 1/2 E 6th Street. To do this, seven 30’ x 15’ large holes will be installed for the wood box tunneling. Two 24-inch chilled water pipes will be installed, starting east of Congress Avenue and ending at the corner of San Antonio Street and 6th Street. If the 6th Street Chilled Water Transmission Line Extension project doesn’t move forward as planned, it will impact the continuity of chilled water service for downtown customers. An additional 90 days will be added to the original 360-day schedule due to the expanded scope of work. Item 9This project is located within zip code 78701 (District 9). 25-2393