HomeMy WebLinkAboutCHANGE ORDER - RFP - 7220 WATER WW TREATMENT & SITE INFRASTRUCTURE DESIGN CONSTRUCTION CONTRACTOR (23)WTF CCB Phase 3 Contract Change Order
December 2016 00950-1
SECTION 00950
CHANGE ORDER NO. 3
PROJECT TITLE: WTF Chlorine Contact Basin Phase 3 Construction
CONTRACTOR: Hydro Construction
Purchase Order and Business Unit Numbers: PO9162138 and BU 5020331000
DESCRIPTION:
1. Reason for change: additional site work items to complete the construction of CCB project
2. Description of Change: additional site work identified during cathodic protection portion of CCB
construction. New piping and test stations and junction boxes are connected into the WTF rectification
system, so all new piping is cathodically protected. However, the 36” DIP north of the water reservoirs
which is influent to the East reservoir and connected to the new CCB, is not bonded, so with the new
piping connection to the rectifiers, stray current can quicken corrosion on unbonded ductile iron pipe.
Thus, to protect this pipe, it must be bonded to prevent enhanced corrosion. This work will be completed
within the substantial completion timeframe of change order #2.
3. Change in Contract Cost: with three change orders, including this one at $139,353, the new total contract
amounts to $7,184,266.00.
4. Change in Contract Time: With these new work items, the master schedule for the substantial completion
of the CCB construction will remain within change order #2 substantial completion, September 30, 2017.
ORIGINAL CONTRACT COST $ 6,852,437.00
TOTAL APPROVED CHANGE ORDERS $331,730.00
TOTAL PENDING CHANGE ORDERS $0.00
TOTAL THIS CHANGE ORDER $139,353.00
TOTAL % OF THIS CHANGE ORDER 2.0%
TOTAL C.O.% OF ORIGINAL CONTRACT 6.5%
ADJUSTED CONTRACT COST $ 7,323,520.00
(Assuming all change orders approved)
ACCEPTED BY: DATE:
Contractor's Representative
ACCEPTED BY: DATE:
Special Projects Manager
REVIEWED BY: DATE:
Chief Engineer
APPROVED BY: DATE:
Water Production Manager
APPROVED BY: DATE:
Water Resources and Treatment
Operations Manager
APPROVED BY: DATE:
Purchasing Agent over $60,000
APPROVED BY: DATE:
Gerry Paul, Director of Purchasing
(over $60,000)
DocuSign Envelope ID: 43664849-A4EC-48B8-917D-8AB1EFFC8D17
5/30/2017
5/31/2017
6/1/2017
6/1/2017
6/1/2017
6/1/2017
6/6/2017