The Greer Commission of Public Works (CPW) has experienced large and sudden increases of flow in its sewer system for many years, whenever large rainfall events occur, due to stormwater entering the wastewater collection system. This phenomenon is known as rain dependent inflow and infiltration.

Design South was retained to analyze the sewer basins that contribute flow to Greer CPW’s wastewater treatment facilities. The initial inflow and infiltration study was completed and included flow monitoring, smoke testing and manhole rehabilitation. The ongoing work has included additional flow monitoring work in problem areas. The data from the field has been retrieved using sophisticated remote data collection via the internet.

Using these results, CPW desires to begin pipeline rehabilitation beginning with the older system components. The downtown project area consists of 16,500 feet of sewer lines and 60 manholes that are approximately 100 years old. The proposed rehabilitation methods will be cured-in-place pipe for the sewer lines and sulfide resistant cementitious mortar for the manholes. To date, preliminary field work has been performed.