When critical infrastructure needs to last, every bond counts. At East Bay Municipal Utility District’s Main Water Treatment Plant, a high-stakes repair at a clarifier tunnel entrance demanded more than just patchwork—it needed proof of performance. Concrete Science, Inc. was brought in to deliver hard data on the bond strength of the repair, ensuring long-term durability under real-world loads. Their findings not only confirmed the repair’s integrity but also validated an aggressive surface prep method that could shape future repair standards.