Finished CIPP job in Rochelle commercial building. Rehabilitated 12" main drain (35 linear ft) with felt liner saturated w/ epoxy resin. Curing process monitored w/ temp sensors to ensure complete hardening. Final video inspection confirms successful installation - no wrinkles or defects. Also cleared downstream blockage that was causing backup. System functioning at 100%. Customer maintenance staff trained on proper usage to extend repair lifespan.