Stow Tanks 1-4 Repairs and Recoat - CP76300028 - City of Simi Valley

Site work and renovation of a water / sewer project in Simi Valley, California. Conceptual plans call for the renovation of a water / sewer project; and for site work for a water / sewer project. This project would repair and upgrade three of the four Stow Tanks that have been in service since 1960, with a total capacity of 5 Million gallons.The Waterworks Facilities Assessment conducted by Carollo Engineers in 2015, recommended revising the site layout, realigning the piping, and/or a combination of each to install a flexible pipe connection with a full range of differential movement for Tank No. 1. All tanks will have the voids below the tank perimeter, filled with a flowable material to reinforce the structure. Bollards will be installed to protect the tank inlet/outlet piping. The wall base around the tanks will be provided with localized blasting and recoating. The base will then be resealed with a flexible joint sealant. In addition, the Seismic Evaluation of the Waterworks Storage Tank System, conducted by Kennedy Jenks Consultants in 2020, identified that the strength of the shell is deficient, the column supports need to be replaced, the tank needs to be anchored, and a ring wall foundation needs to be constructed to support the structure to meet current seismic requirements. In addition, tank interiors needed to be recoated and exterior needs to be painted. Staff recommends to replace Stow Tank No.1 with a new welded steel tank and retrofit and repair Tank Nos. 2, 3, and 4 to meet the current seismic code requirements to ensure reliability of the system. Design is anticipated to be completed in May 2024 and construction is expected to be completed by October 2025. Project is included in the City of Simi Valley's FY 2022 - 2027 CIP. As of June 22, 2022, information regarding a design team and a general contractor is not available. Construction is anticipated in FY 2024 and FY 2025.* *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Concrete Reinforcing, Cast-in-Place Concrete.
Division 05 -	Metals, Structural Metal Framing, Metal Decking.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Facility Fuel Piping, Facility Fuel-Storage Tanks.
Division 31 -	Earthwork, Clearing and Grubbing, Grading.
Division 32 -	Exterior Improvements, Fences and Gates.
Division 33 -	Utilities, Storm Drainage Utilities.