Completed comprehensive underground air duct assessment for commercial property in Bartlett today. Customer reported inconsistent airflow and mustiness in specific zones. Utilized specialized camera system to inspect approximately 120 feet of underground ductwork. Identified three primary issues requiring attention: significant moisture accumulation at two low points creating ideal conditions for mold growth; partial collapse of duct wall at 45° bend restricting airflow by approximately 40%; and deteriorating seals at two connection points causing air leakage. Collected air samples for laboratory analysis to confirm suspected microbial contamination. Created detailed digital mapping of entire system with GPS coordinates of problem areas. Recommended remediation plan involving targeted repairs using our trenchless technology rather than disruptive excavation. Customer appreciated our non-invasive approach that would minimize business disruption. Provided detailed report with video docum