CERTA-LOK ® LARGE-DIAMETER RESTRAINED-JOINT PVC PIPE HELPS CHICAGO SUBURB GET RELIEF FROM SEWER BACKUPS Faced with boring through wetlands and under a creek to address much needed improvements to its sanitary sewer system, the City of Elmhurst, Illinois, turned to Certa-Lok C900 large diameter restrained-joint PVC pipe and horizontal directional drilling (HDD) to get the job done. CASE STUDY MUNICIPAL Application: Force Main Sewer Project Type: Horizontal Directional Drilling Owner: City of Elmhurst Product Used: Certa-Lok ® C900 PVC Pipe Contractor: Archon Construction Co., Inc. Engineering: RJN Group CHALLENGE After area homes were plagued with sanitary sewer backups following a severe storm, the Chicago suburb launched the $10 million Southwest Elmhurst Wet Weather Contr

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