City of Lawrence

Utilities Department 

MEMORANDUM

TO: David L. Corliss, City Manager

                        Cynthia Wagner, Assistant City Manager

                        Diane Stoddard, Assistant City Manager

FROM:            Philip Ciesielski, Assistant Director of Utilities

CC:                  Dave Wagner, Director of Utilities

                        Mike Lawless, Assistant Director of Utilities

                        Beth Frailey Krishtalka, Assistant to Director

                        Dave King, Utilities Maintenance Superintendent

Mark Hegeman, Utilities Operations Superintendent

DATE:             June 6, 2012

RE:                  June 12, 2012 Agenda Item – Project WW0601, Anaerobic Digester Improvements at the City of Lawrence Wastewater Treatment Plant, Approve Change Order No.4

Please include the following items on the City Commission agenda for consideration at the June 12, 2012 meeting:

Authorize the City Manager to execute Change Order No.4 to the existing Construction Contract with Walters Morgan Construction for project WW0601 Anaerobic Digester Improvements increasing the contract amount by $45,431.00 and increasing the contract times by 14 days.

Project Description:

This Capital Improvement Plan (CIP) project was recommended as part of the 2003 Wastewater Master Plan. The project is required to increase the capacity of the wastewater plant’s solids processing stream to match the plant’s liquid processing capacity and provide wastewater treatment for a community of 100,000 persons.  

Details:

Change Order No.4 represents a net INCREASE to the construction contract of $45,431.00 and adjusts the contract time by an ADDITIONAL 14 days. The attached change order summary describes the additional work covered. Black & Veatch and Staff have reviewed the proposed Change Order No.4 and recommend authorizing its execution.

Project Schedule:

Original Contract       Substantial Completion        July 2, 2012

Final Completion                August 3, 2012

Change Order No. 1  Additional 18 Days

Change Order No. 2  Additional 10 Days

Change Order No.3   Additional   4 Days

Change Order No.4   Additional 14 Days

Proposed Contract    Substantial Completion        August 17, 2012

Final Completion                September 18, 2012

Construction Contract Costs:

Original Contract                  $3,130,000.00

Change Order No.1                   $30,217.00

Change Order No.2                   $22,928.00

Change Order No.3                   $12,020.00

Change Order No.4                   $45,431.00

Proposed Contract Total        $3,240,596.00

To date Change Order adjustments are 3.5% of the original contract amount. The contractor has completed nearly all of the construction per the original contract and Change Orders Nos. 1 – 3. It is anticipated all construction, including the items in change order No.4, will be completed ahead of schedule in July.

Project Funding:

The project is funded from a combination of 2009 and reallocated 2007 Bond Funds. The total project budget is $6,159,302.00, with $5,725,287.25 remaining for construction. The 2009 Bond proceed balance of $5,249,302.00 are remaining from the Build America Bonds. Per the terms of the Bond 75% these funds must be expended prior to August of 2012 to maintain their non-taxable status.

Action Request.

Authorize the City Manager to execute Change Order No.4 to the existing Construction Contract with Walters Morgan Construction for project WW0601 Anaerobic Digester Improvements increasing the contract amount by $45,431.00 and increasing the contract times by 14 days.