A field stone and concrete settling tank at the Knouse Foods applesauce factory in Orrtanna, Pa., was severely deteriorated and cracked. Groundwater infiltrated and some commercial wastewater – an acidic slurry of diced apples, seeds, cores and water – exfiltrated.The corroding tank was an ongoing problem, and maintenance supervisor Pat Balog didn’t know what to do. Replacement wasn’t an option, as the cost was prohibitive and the plant couldn’t afford to lose two or more weeks of production.At a trade show, Balog’s plant engineer met Gary Mock of Advanced Rehabilitation Technology (ART) of Bryan, Ohio, who evaluated the tank and
