Matrix assessed the 2.29 million-gallon Widefield Terminal Tank for Fountain Valley Authority (FVA). FVA was not aware of the maintenance history on the tank and many believed it had only had minor maintenance performed on it since it was constructed in 1981. The assessment included evaluating the structural integrity of the tank and confirming code as well as health and safety compliance. The tank is essential to Fountain Water’s ability to meet demand and could only be taken out of service for a limited time between October and April. Due to this restriction, our Team performed a floating assessment of the roof components while the tank was in operation. This allowed a detailed assessment of critical structural components while FVA continued to supply water to its customers.

The assessment proved that the tank needed repairs for long-term reliability and stability. Matrix and FVA agreed that all critical maintenance items that affected water quality and structural stability had to be performed. The primary scope of work consisted of replacing steel rafters and recoating the interior and exterior of the tank. Additional elements included installing a handrail around the outside of the tank, replacing the center vent, installing a new access roof hatch, and installing additional roof vents to promote better circulation. We worked with the contractor to expediate design and review of the necessary rafter replacements to keep the project on schedule. Our Team also provided additional construction support, including daily construction observation, responding to RFIs and submittals, and preparing record drawings at the conclusion of construction.