CSO (Combined Sewer Overflow)

Omaha, Nebraska
Major cities across the U.S. face an unfunded federal mandate, as does the City of Omaha, to implement a plan for separating combined sewers within the City. The purpose of this mammoth undertaking is to improve water quality and protect rivers, creeks and streams. As part of the Program Management Team (PMT), Lamp Rynearson serves as Project Coordinator and Compliance Coordinator on several projects and is leading the development of a sustainability program. Lamp Rynearson also serves as Utility Coordinator, and is a major partner on two of the ten CSO (Combined Sewer Overflow) basin teams.

Project Quick Facts

  • The City of Omaha CSO project - 51 square miles of the eastern sections of Omaha.
  • Total plan cost is estimated at $1.7 billion and covers 10 topographic basins.
  • Webster Street Sewer Extension project, the first major early implementation project for the CSO Program, was completed by Lamp Rynearson.
  • The Long Term Control Plan’s three major elements:
    • 5.8-mile long storage/conveyance tunnel along the Missouri River.
    • Two additional high-rate treatment facilities.
  • Additional sewer separation throughout the combined sewer service area.