Sandstone Tunnel Cleaning Project

MCES Project No. 808841

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Final Construction Update - September 11, 2019.  See Project Updates below.

The sewer construction work on this project is complete. Construction site restoration also is complete, and is currently under warranty. MCES will monitor the restoration progress during the warranty period and make adjustments as needed. If you have further questions about this project, please contact us by email at or call Tim O’Donnell, MCES Project Citizen Liaison, at 651-602-1269.


Project Overview

Metropolitan Council Environmental Services (MCES) cleaned a regional sanitary sewer interceptor located on the west side of Saint Paul from March 2019 through August 2019.  The regional sanitary sewer interceptor consists of a tunnel partially lined with clay tile.  The upper portion of the tunnels are exposed sandstone. Inspections of the sandstone tunnel indicated that debris removal is needed to maintain sewer operations and improved access was needed for debris removal and future maintenance activities.

The following work was completed:

  • Removal of debris from the sandstone tunnel.
  • Installation of new maintenance hole and shaft on George Street between Livingston Avenue and Robert Street.
  • Installation of a city-owned maintenance hole at the intersection of State Street and Stevens Street. This site was also used for access to the sandstone tunnel during cleaning.

Project Fact Sheet (PDF)
Project Fact Sheet - EspaƱol (PDF)


Project Updates

Construction Update - September 11, 2019 (PDF) 183 kB

Construction Update - August 16, 2019 (PDF) 93 kB

Construction Update - August 12, 2019 (PDF) 94 kB

Construction Update - August 9, 2019 (PDF) 51 kB

Construction Update - July 12, 2019 (PDF) 45 kB

Project Contacts

If you have any additional questions about this project, please contact:

Tim O'Donnell, Citizen Liaison
Metropolitan Council Environmental Services
Phone: 651-602-1269

Project Staff


Project Manager: Dan Chouinard, Senior Engineer, Interceptor Engineering
Council's Authorized Representative: Jennifer Adams, Principal Contract Administrator, Construction Services

Capital Improvement Program