Memorandum

City of Lawrence

Utilities Department

TO:	Diane Stoddard - Interim City Manager Casey Toomay – Assistant City Manager
FROM:	Mike Lawless – Deputy Director of Utilities
CC:	Dave Wagner – Director of Utilities Scott McCullough, Director of Planning and Development Services Beth Krishtalka – Assistant to Director of Utilities Troy Shaw, Project Engineer Bob Brower, Field Operations Superintendent
DATE:	August 12, 2015
RE:	August 25, 2015 Agenda Item – Summary of the Sewer Replacement at the northeast corner of 9^th & New Hampshire

Summary

On May 6, 2015, while performing preventative maintenance on a sanitary sewer main in the alley adjacent to the North Project, at the northeast corner of 9^th & New Hampshire, Utilities staff discovered grout partially blocking the sewer main. The grout was from installation of the shoring for the excavation on the North Project and was blocking approximately 170 feet of the sewer main. First Construction contracted with RD Johnson to remove and replace the 170 feet grouted sewer main at the developer’s cost of approximately $110,000. In addition to the cost of the sewer replacement, Utilities staff compiled the work orders associated with the investigation, monitoring, and inspection of the sewer replacement and sent an invoice for $8,152.84 to First Construction to cover the cost incurred by the City.

With the redevelopment of Pachamamas, Border’s, and potentially more redevelopment upstream and across the alley from the North Project, and given the restricted area within which any future repairs would need to be completed, Utilities staff felt that it would be in the best interest of the City to exceed the typical, banded connection between the new sewer main and the old sewer main by continuing the sewer main replacement from the end of the grout to the upstream manhole at the City’s cost. With the development of the North Project, a manhole was constructed about 114 feet upstream of the end of the grout. Utilities staff requested First Construction to continue the sewer main replacement from the end of the grout to the upstream manhole at a cost to the City of $44,754.01. A map of the sewer replacement is attached for reference.

Funding

Funding for the sewer main replacement requested by the City will be funded from the Utilities Department cash construction fund.

Action

Authorize the Interim City Manager to approve payment of the invoice from First Construction in the amount of $44,754.01 for the additional sewer replacement in the alley adjacent to the North Project.