Chemical Storage System Replacement
SGWASA FY23-33 CIP as PID# 107-02
The SGWASA Wastewater Treatment Plant (“Plant”) utilizes chemicals for the treatment process to meet North Carolina Department of Environmental Quality (NCDEQ) discharge requirements. The Plant currently has five alum and four caustic bulk chemical storage tanks. The existing tanks are made of fiberglass and have been in use for over twenty years. Over time, due to a combination of factors, all the tanks have deteriorated such that none are operating entirely as designed.
Based on the current age and condition of the tanks and their associated components (plumbing, electrical, SCADA), SGWASA staff has determined the best course of action is to replace the chemical storage tanks with new tanks of modern materials and design.
Analysis
McGill Associates completed the design work for the project and advertised the project for public bidding in November and opened bids on December 7, 2023. A total of four (4) bids were received for the project.
WGK Construction, LLC, of Wake Forest, North Carolina, was the lowest responsive, responsible bidder with a total base bid amount of $865,000. At the February 2024 Board of Directors meeting, the Board members approved a contract with WGK Construction, LLC. This project is in progress. Due to the length of time to obtain the custom chemical tanks for this project, the project is scheduled to be completed by Dec. 1, 2024.
To date, the contractor continues to make great progress on this project and may finish sooner than December 1, 2024.
Phase 2 of the Chemical Tank Replacement Project was completed during the week of September 10th, 2024. Three of the four chemical tanks got installed were installed on September 10th with the final installed later in the week.