GROUP 3 CIPP 

Group 3 CIPP comprises the installation of a Cured-In-Place Pipe (CIPP) liner inside an existing sanitary sewer pipe, digging any necessary point repairs in preparation for CIPP, and rehabilitating/replacing manholes connected to segments being repaired with CIPP. CIPP is a trenchless rehabilitation method used to avoid prolonged disruption to the surroundings, and a typical line segment can be repaired in one to two days.

GROUP 3 RELAY

Group 3 Relay comprises a contractor excavating and replacing an existing sewer line from manhole to manhole. This repair method is used when trenchless rehabilitation is not feasible and generally takes between 2 to 3 weeks to complete a segment. Crews work with surrounding neighbors to ensure the work is as minimally disruptive as reasonably possible.

Closed Circuit Cameras

To examine the condition of the existing sanitary sewer lines in the system, the SARP10 team is using Closed Circuit Television (CCTV). These cameras are mounted on tracks that crawl through the sewer pipes to give 360-degree video of each segment to document defects or significant debris or grease buildup in the line. The video logs, along with summaries of the defects for each line, are then analyzed to determine maintenance and rehabilitation priorities. Lines with significant debris, roots, grease, or other maintenance issues are addressed by preventative maintenance either by the city or a city-appointed contractor. Segments with structural issues are prioritized by severity, and the most severe lines will be addressed by SARP10 during the rehabilitation phase of work.

MANHOLE INSPECTION

The SARP10 Team will be inspecting sanitary sewer manholes throughout the City. Manholes are the main way sewer maintenance crews gain access to the sewer lines for cleaning and general maintenance. The main objective of the inspection is to identify and classify defects in the manhole structure. The majority of the inspection is performed with cameras or video equipment. Once the defects are identified, the SARP10 Team can then prioritize the repairs and develop plans for corrective actions.