Memorandum

City of Lawrence

Department of Utilities

TO:	David L. Corliss, City Manager Cynthia Wagner, Assistant City Manager Diane Stoddard, Assistant City Manager
FROM:	Philip E. Ciesielski, Assistant Director of Utilities
CC:	Dave Wagner, Director of Utilities Charles Soules, Director of Public Works Mike Lawless, Assistant Director of Utilities Beth Krishtalka, Assistant to Director Mark Hegeman, Utilities Operations Superintendent
	March 19, 2012
RE:	Agenda Item – Execute Change Order No.1 for Project UT1003CS, 23^rd Street Bridge Replacement Utilities Relocation

Please include the following item on the City Commission agenda for consideration at the March 27, 2012 meeting:

Authorize the City Manager to execute Change Order No.1 to the existing construction contract with Redford Construction for Project UT1003CS 23^rd Street Bridge Replacement Utilities Relocation increasing the contract amount by $27,599.91.

Project Details

The Kansas Department of Transportation (KDOT) is in the process of completing design and property acquisition for the replacement of the 23^rd Street/K10 bridge located between Haskell and Learnard. KDOT anticipates bidding the construction in January of 2012 with construction commencing in March or April 2012. The City needs to complete the relocation of its water and sanitary sewer facilities prior to the start of KDOT’s construction.

The City maintains four (4) existing sanitary sewer interceptor lines and forcemains constructed at various times and ranging in diameter from 27” to 12” which cross 23^rd Street under the existing bridge span (map attached). These lines are in conflict with the design and the construction area of the new bridge and require relocation prior to KDOT’s the construction of the new bridge. As part of the project the design these are being consolidated into two (2) redundant gravity crossings influent and distribution structures upstream and downstream of the bridge crossing. Additional 8” collector sewers in the project area are also being relocated and/or rehabilitated as part of the project.

In addition to the sanitary sewer lines there is also approximately 2,600 lf of 8” & 12” diameter watermain within the area of the bridge project requiring relocation.

Details:

Change Order No.1 represents a net INCREASE to the construction contract of $27,599.91 with no change to the contract times. The attached change order describes the additional work covered. The work covered by Change Order No.1 was a result of field conditions found during construction that could not have been determined during design. Professional Engineering Consultants and Staff have reviewed the proposed Change Order No.1 and recommend authorizing its execution.

Project Schedule:

Original Contract Substantial Completion May 15, 2012

Final Completion June 15, 2012

Change Order No. 1 Substantial Completion May 15, 2012

Final Completion June 15, 2012

Construction Contract Costs:

Original Contract $1,216,000.00

Change Order No.1 $27,599.91

Current Contract Total $1,243,599.91

To date Change Order adjustments are 2.27% of the original contract amount.

Project Funding

Funds for project design are included in the Department of Utilities 2010 rates and Capital Improvements budget. Funds for project construction are included in 2011 rates and non-bonded Capital Improvement Plan.

Action Request