City of Lawrence
Utilities Department
MEMORANDUM
TO: David L. Corliss, City Manager
Cynthia Boecker, Assistant City Manager
Diane Stoddard, Assistant City Manager
FROM: Philip E. Ciesielski, Assistant Director of Utilities
CC: Dave Wagner, Director of Utilities
Mike Lawless, Assistant Director of Utilities
Beth Frailey Krishtalka, Management Analyst
Mark Hegeman, Water Systems Manager
Dave King, Maintenance Manager
DATE: October 21, 2008
RE: Phase II Clinton Water Treatment Plant Expansion 2CP205 – Approval of Change Order No.6
Please include the following item on the City Commission Agenda for consideration at the
October 28, 2008 meeting:
Approval of Change Order No.6 to the construction contract with CAS Construction LLC for the Phase II Clinton Water Treatment Plant Expansion 2CP205 increasing the contract amount by $32,749.36.
Project History:
Phase I of the Clinton Water Treatment Plant (WTP) expansion was completed in 2002 through a modified design build approach. Phase I of the expansion improved the raw water pumping, filtering capacity, transfer pumping and various electrical/mechanical systems. The phased implementation of the Clinton WTP expansion provided the flexibility to the City of Lawrence to meet seasonal demands without water restrictions and delay constructing infrastructure in advance of regulatory determinations which could impact the selection of treatment processes.
The 2003 Master Plan provided a schedule of work for completing Phase II of the expansion. The project will increase capacity to meet projected customer demands, improve reliability of the water treatment facility, and provide for future treatment processes if needed for upcoming regulations. The improvements will complete the expansion of the water treatment plant to a firm capacity of 25 million gallons per day (mgd) and hydraulic capacity to 30 mgd. This will include new basins, high service pumping, electrical improvements and miscellaneous building/chemical feed improvements.
On March 27, 2006 the following 3 base bids were received:
CAS Construction, LLC $13,929,000.00
BRB Construction $14,351,000.00
Foley Construction $15,486,300.00
The project was awarded to CAS Construction, LLC by the City Commission during their April 17, 2007 meeting.
Details:
Previously five (5) Change Orders have been submitted by CAS Construction, LLC and approved by the City. These change orders were a combination of increases and deductions and resulted in a net increase to the contract of $88,553.10 and an extension of the contract time of 44 days due to weather delays.
Change Order No. 6, attached, requests a net increase to the contract of $32,749.36 for additional work and materials, and no adjustment to the contract time.
Project Schedule:
Original Contract Substantial Completion July 8, 2008
Final Completion October 16, 2008
Current Contractual Substantial Completion August 21, 2008
Final Completion November 29, 2008
Construction Contract Costs:
Original Contract; Base Bid & Alt. C $13,979,000.00
Change Order No.1 $11,435.09
Change Order No.2 $3,108.80
Change Order No.3 $12,238.16
Change Order No.5 $13,241.43
Change Order No.6 $32,749.36
Current Contract Total $14,100,302.46
To date Change Order adjustments are 0.87% of the original contract amount.
Project Funding:
Funding for the construction of the Phase II expansion, including Change Order No.6, is from the bonded construction fund for 2005/2007.
Action Requests: Utilities staff requests approval of Change Order No. 6 to the construction contract with CAS Construction LLC for the Phase II Clinton Water Treatment Plant Expansion increasing the contract amount by $32,749.36.
Thank you for your assistance. Please advise if you have any questions.