Main Sewer Line Root Intrusion & Ground Floor Backup
Location: Off Lark Ellen Avenue near Woodside Park, Woodside Village, West Covina, CA
The Scenario: Heavy mature tree roots compromised a 1960s cast-iron sewer lateral, forcing 300 gallons of Category 3 black water into two bathrooms and adjoining hallways.
Equipment Deployed: Negative air HEPA scrubbers, botanical antimicrobial disinfection, truck-mounted extraction units, and high-velocity low-profile air movers.
Psychrometric Drying Log: Pre-containment airborne spore count: Elevated. Post-remediation clearance: Clean zero-pathogen clearance certification.
Outcome & Timeline: 3 days containment, complete biohazard extraction, contaminated drywall cut at 2-foot flood cut, followed by total reconstruction.