What is a trenchless rehabilitation method?

Trenchless rehabilitation methods are designed to repair existing underground pipelines without the need for extensive excavation, which can minimize disruption to the surface. The correct choice describes the Cured-In-Place Pipe (CIPP) method, a common trenchless technique. CIPP involves inserting a flexible liner saturated with resin into the existing pipe, which is then cured to form a new, durable pipe within the old one. This process maintains the integrity of the existing infrastructure while effectively addressing issues such as leaks, corrosion, and blockages.

Unlike traditional methods that require significant digging, trenchless techniques are less invasive, reducing costs and time associated with restoration of surface conditions post-repair. This aspect demonstrates the efficiency and effectiveness of trenchless methods in maintaining and rehabilitating wastewater and stormwater systems, allowing for continuous operation and minimizing community impact during repair activities.