HomeMy WebLinkAboutAgenda Report - July 16, 2008 E-09AGENDA ITEM v'=�
&a% CITY OF LODI
COUNCIL COMMUNICATION
AGENDA TITLE: Report on Contract Change Orders for White Slough Water Pollution Control
Facility Phase 3 Improvements Project 2007
MEETING DATE: July 16,2008
PREPARED BY: Public Works Director
RECOMMENDED ACTION: This item is for information only. No action is required
BACKGROUND INFORMATION: In accordance with the Contract Change Order Policy, the
City Council is being informed of change orders approved by the
City Manager for this project since the September 5, 2007 Council
Meeting. Council also authorized the emergency repair of the
Domestic Outfall pipeline (Change Order No. 11) at the October 17, 2007 meeting. The original contract
for this project was $16,387,000. The total cost of change orders to date is $5,163,576, which is 31.5%
of the original contract. Excluding Change Order No. 11, the total of the other changes are 3% of the
original contract. The project is approximately 85% complete. Detailed below is a description of the work
involved in the change orders. Complete descriptions and backup informationfor these change orders
are available in the Public Works Department.
Change Order No. 9 - This change order is for the emergency repair of four sections of the domestic
outfall pipeline that collapsed nearThornton Road. ($74,959)
Change Order No. 10 -This change order is for the installation of 8 -inch drain pipelines in existing
Clarifiers No. 1 and No. 2. ($21,836)
Change Order No. 11- This change order is for the emergency repair and slip -lining of the domestic
outfall pipeline between Lower Sacramento Road and White Slough, as authorized by City Council
on October 17, 2007. ($4,594,387)
Change Order No, 12 -This change order is for adding OSHA -required handrail around the
headworks raised deck area. ($10,733)
Change Order No. 13 - This change order is for various electrical changes including sludge pump
and headworks light fixture replacement, headworks exhaust fan, and a chlorine building electric
sub -panel. ($25,410)
Chanae Order No. 14 -This change order is for rerouting secondary sludge air piping and additional
concrete work at Aeration Basins No. 1 and No. 2 channels. ($20,394)
Chanae Order No. 15 -This change order is for coating the headworks channels to protect the
concrete from the corrosive S02 gases present. ($51,589)
Change Order No. 16 -This change order is for coating the entire interiorfloors, walls and ceiling in
the headworks to protectthe concretefrom the corrosive S02 gases present. ($63,127)
APPROVED:
Blair , City Manager
K 1WPTROJECTSISEWERIWSWPCRWhite SloughWPCF Phase 3 Improvements20071GG Notify of C0 2 WSWPCF Phase 3 2007 dOC 71712008
Report on Contract Change Orders for White Slough Water Pollution Control Facility Phase 3
Improvements Project 2007
July 16, 2008
Page 2
Change Order No. 17 - This change order is for the purchase of a 12 -inch diesel pump and
associated hoses for use in bypass work at White Slough. The unit will also be available for City
emergency pumping needs. ($42,201)
Change Order No. 18- This change order is for adding code -required electric disconnect switches
to existing plant equipment and adding control wiring to monitor the equipment. ($51,280)
Change Order No. 19 - This change order is for rerouting the NCPA return water line and
refurbishing a roadway used by the City Vacon truck on the White Slough property. ($27,270)
Change Order No. 20 - This change order is for rerouting existing (and additional) tail -water pump
piping. This work was required as a condition of the new discharge permit. ($40,550)
Change Order No. 21 - This change order is for design services related to site electrical grounding
issues. The designers are working with the Electric Utility Department to resolve electrical safety
concerns at the White Slough site. ($98,986)
Change Order No. 22 - This change order is for contractor -provided equipment and labor to assist
plant staff with site clean-up and disposal of 50 years' accumulated debris and moving of stored
materials. ($48,875)
Change Order No. 23 - This change order is for electric related changes including emergency
assistance the contractor provided to plant staff when the main PLC failed and the plant shut down.
($39.383)
Change Order No. 24 - This change order is for ADA compliance work at the Administration Building
main entry and for additional light fixtures. ($19,784)
Change Order No. 25 - This change order is a CREDIT related to the Domestic Outfali Pipeline
project. The work in Change Order No. 11 was completed on time and under budget. (-$392,067)
The total contract to date is $21,550,576.
FISCAL IMPACT: None.
FUNDING AVAILABLE: There are sufficientfunds budgeted in the original project appropriation to
cover these seventeen change orders.
- Vk azti4 luctt�
F. Wallv SarkVelin
Public Works Director
Prepared by Gary Wiman, Construction Project Manager
FWSIGWIpmf
cc: Charles Swimley, Water Services Manager
Del Kerlin. Wastewater Treatment Superintendent
K 1WPIPROJECTSISEWERIWSWPCFIWhite $10ughWPCF Phase 3 Improvements20071CC Notify of CO 2WSWPCFPhase 3 2007doc 613012008