Memorandum

City of Lawrence

Utilities Department

 

TO:

Debbie Van Saun; Dave Corliss; Bobbie Walthall

FROM:

Jim Stuit

CC:

Dave Wagner; Philip Ciesielski; Michael Tubbs; Mark Shepherd

Date:

November 2, 2005

RE:

November 8, 2005 Agenda Item

 

Please include the following item on the City Commission consent agenda for consideration at the November 8, 2005 meeting:

 

Award Utilities Project # II05-03 (Plastic Manhole Replacement Project) to the low bidder – McLouth Excavating Inc.

 

Project History.  Inflow/Infiltration staff, while conducting trunk-line manhole inspections in January, 2005, observed several plastic manholes that were leaking.  Staff then located all the remaining plastic manholes in the system and performed detailed inspections.  6 manholes were identified.  Staff recommended that funds be set aside for replacement of these manholes in the CIP Miscellaneous Project Fund.

Project Status.  Specifications were developed and the project was advertised for bid. Site visitation was a bid requirement and five (5) contractors visited the site with staff.  Two (2) contractors submitted bids on the project.

          McLouth Excavating            $146,000

          Nowak Construction Co. Inc. $205,350 (alternate bid of $170,650)

 

Project Details.  The manholes are located in the SW portion of the City, in a low-lying area that has an abundance of standing water.  Factors in the bid amounts include contractor concerns about access to the sites, the groundwater table and the amount of by-pass pumping that will be required.

 

The manholes are the source of an estimated 25 gpm (0.036 mgd) of groundwater entering the system in dry weather and 125 gpm (0.18 mgd) during wet-weather conditions.  The manholes are just upstream of, and tributary to, Pump Station #09.

 

Project Funding.  This project will be funded (cash financed) from the Water and Sewer non-bonded construction fund.

 

Action Request.  The Utility Department staff requests approval from the City Commission to award Project # II05-03 (Plastic Manhole Replacement Project) to McLouth Excavating in the amount of $146,000.