The Problem
A Gastown restaurant had a sewer smell near the kitchen. Health inspectors had noted it. The grease trap had been recently cleaned.
Detection Method
Smoke testing and CCTV drain inspection. Smoke revealed a crack in the grease trap outlet pipe where wastewater was leaking into sub-slab gravel.
Results
Cracked section re-lined with CIPP — no excavation. Odour disappeared. Next health inspection passed with no issues.