The Problem
Restaurant had water pooling under the kitchen floor. Health inspector had noted the dampness. Owner feared a forced closure.
Detection Method
Evening tracer gas injection into the kitchen drain line. Gas escaped through a crack in a cast-iron drain pipe under the dish pit. CCTV confirmed the crack location and extent.
Results
CIPP liner installed through the existing drain — no excavation. Repaired overnight. Restaurant never closed. Health inspector signed off.