HomeMy WebLinkAbout1997 11 24 Consent Item A
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COMMISSION AGENDA
ITEM
A
REGULAR
CONSENT X
INFORMATIONAL
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Meeting
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Authorization
REQUEST: Public Works DepartmentJUtility Division Requesting Authorization to
Approve Change Order #1 to the Contract Agreement for the Improvements
to Lift Station #7W.
PURPOSE: The purpose of this Board item is to request authorization to approve Change
Order #1 in the amount of$16,175.71 to the contract agreement with Prime
Construction Group, Inc. for the renovation to Lift Station #7W for an increased
authorized amount of$80,475.71 plus a 5% contingency.
CONSIDERATIONS:
This change order is needed to authorize an increase to the Lift Station #7W
contract amount due primarily to having an emergency need for a "line stopper" to be
installed in the 20" wastewater force main. The conditions requiring the "line stopper"
were not known at the time of bid. Change order #1 also includes the addition of two
aboveground pump electrical disconnects for improved safety to personnel entering the
underground pump dry pit.
This project was approved as Consent Agenda item "B" at the August 25, 1997
City Commission meeting. The previously authorized contract amount was $64,300 plus
a 10% contingency. The contractor, Prime Construction Group, Inc. of Orlando, began
work on November 5, 1997. During the pump replacement process on November 12th, it
became apparent that the 24 year old 12" gate valves needed to isolate the flow from the
20" force main would not shut off completely. Without a means to isolate the force main,
,
November 24, 1997
Consent Agenda Item A
Page2_
the full two miles of 20" force main would drain back into the dry pit and overflow into
Gee Creek. There was also no place to pump the sewage to complete the pump
installation.
The most feasible option was to have a "line stopper" installed which entails
tapping the force main and using a hydraulically operated bladder to stop the flow. The
tap can be reused if needed in the future. The cost for this was determined to be $14,220
including the "line stopper" subcontractor's costs and the contractor costs. This work
was deemed to be an emergency because the bypass pumping created a noise problem for
abutting residents and a risk of overflowing raw sewage into Gee Creek. The contractor
was told to proceed and the emergency work was completed on November 14 allowing
the renovation work to continue.
The second component of the change order is the addition of two aboveground
pump electrical disconnects at a cost of$I,955.71. The original design specifies the
pump disconnects to be located at the pump in the dry pit. Due to the potential of water
being in the dry pit, it was suggested by the electrician that two additional aboveground
disconnects would provide an additional safety measure for personnel entering the pit.
FUNDING:
This project was budgeted in the Utility Enterprise Fund Renewal and
Replacement line code (3600-59110) at $100,000. The additional cost of change order
#1, $16,175.71, brings the total contract amount to $80,475.71. There is no increase to
the $3,000 Construction Administration costs for CPR Engineers, Inc. The funds for this
project will be expended within 30 days of approval.
Qr..igin.aLCQJJ1r..ac.t Ch~Qr..der...Jll LQtaLReq.u.es.t
Construction $64,300.00 $16,175.71 $80,475.71
Contingency JEA31LQQ(1 0%) _$.Q..oo _$A.Q2l.12( 5%)
Total $70,730.00 $16,175.71 $84,499.50
November 25, 1997
Consent Agenda Item A
Page 3-
RECOMMENDATION:
I am recommending that authorization be given to approve Change Order #1 in
the amount of$16,175.71 to the contract agreement with Prime Construction Group, Inc.
for the renovation to Lift Station #7W for an increased authorized amount of$80,475.71
plus a 5% contingency to be from the Utility Enterprise Fund Renewal and Replacement
line code (3600-59110).
IMPLEMENTATION SCHEDULE:
The project will be completed by November 26, 1997. Funds will be expended by
December 31, 1997.
ATTACHMENTS:
1. Change Order # 1
COMMISSION ACTION:
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Attachment No. 1
CONTRACT CHANGE ORDER
Change Order No.
L-
Engineer Project No. --.-#97-023
Project Title: Lift. Station #7W Improvements
Contractor: Prime Construction Group..-Inc.
Reason for Change Add ele.c.t.rkaLdisc.<l1111e.cts-'lll.d_p_erfomLemergenc...y.J.ine-51op.p.age on FM
Breakd_own of Proposed Chang~nd Basis for P~ent
(Includes pertinent drawings, specifications, and documentation where necessalY)
Item No. and Description Change in Contract
Cost +H
1. Furnish and Install Two 60 Amp discOlmects in stainless steel $1,955.71
NEMA 4X enclosure.
2. Furnish and Install a single 20" Line Stop on Force Main $14,220.00
including all labor and materials.
(1) Total Proposed Change in Contract +( -) $
(2) Original Contract Price $
(3) Total All Previous Change Orders(Change Order No.1 thru-L) $
tun5.71
Q4.3..0.D.00
o
(4) New Contract Price(Total ofItem 1,2 & 3)
$
80,flS..71
Recommended By Engineer:
Date
Accepted By Contractor:
Date
Accepted By Owner:
Date