HomeMy WebLinkAboutCO 1 CITY OF RENTON CAG-12-065 , CO #1-12
Public Works Department
CONTRACT CHANGE ORDER AGREEMENT
CONTRACT: Elliot Spawning Channel Repair Project (CAG-12-065) C.O.# 1
CONTRACTOR: TF Sahli Construction
SUMMARY OF PROPOSED CHANGES:
Item # C0#1:
The contractor is requesting to cleanout excessive sediments previously hidden under the logjam and within a
confined channel with rock armoring on the slope base from Station 0+00 to approximately 200 feet
downstream. This work is not part of the original scope and is of a different construction method since it
involves more manual labor due to the narrow channel width with ripap sides,the need to limit existing
vegetation disturbance and a large diameter tree trunk bridging the channel.
The.additional work involves more labor, surveying and aquatics sub-contractors work and equipment as
compared to the excavation work upstream of Station 0+00 to the permeable levee. This manual labor
methodology minimizes disturbance to existing vegetation that currently provides shade to this portion of the
spawning channel. An additional five working days are requested in order to survey,remove potential aquatics
downstream and to excavate the sediments. One of the five working days is to compensate the contractor for
one lost working day due to excessive rains that occurred on July 6, 2012.
The total lump sum cost of labor, materials, equipment and taxes is $7,988.28.
The cost breakdown for these items are listed below and is full compensation for all work described above:
Bid Item Description Ouantity Unit Unit Cost Cost
col Excessive sediment removal from 1 Lump Sum 7,295.23 7,295.23
station 0+00 to 200 feet
downsream. Work is lump sum and
includes additional material haul
out to be paid under bid Item 4008.
Subtotal $7,295.23
Tax-Rule 170 $693.05
Total $7,988.28
ORIGINAL CONTRACT CURRENT CONTRACT ESTIMATED NET CHANGE ESTIMATED CONTRACT
AMOUNT AMOUNT THIS ORDER TOTAL AFTER CHANGE
$306,753.30 $306,753.30 $7,988.28 $314,741.58
The proposed change fee described above is within the Elliot Spawning Channel Repair Project CIP budget. Attached is the
contractor's request for the change.
SIGNATURES: -
Contractor: Date: `� 01
Project Engineer: f Date: -Z-2o/Z
Approved By: Date:
Ron aka,Surface Wa r Utility Engr.Supervisor
H:\File Sys\SWP-Surface Water Projects\SWP-27-Surface Water Projects(CIP)\27-3605 Elliott Channel Repair Project\1602 Constr BidTabs\Change
Orders\120731-SC-COI.DOC\SL
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TF Sahli Construction
Date of Request: 07/16/2012
Owner: City of Penton CHANGE ORDER#: 1
Project Title: Elliot Spawning Channel Repair Project
Description of Extra Work: Request to cleanout excessive sandy sediments from Station 0+00 to approximately 200 feet downstream
of Station 0+00 that was not part of original scope. Additional work involves more labor,sub-contractors
work and equipment than just excavating materials upstream of Station 0+00 in a confined area that differs in
construction methodology than.the work upstream due to additional labor and minimizing disturbance to
existing vegetation. In addition,an additional three workdays is requested for this portion of the work due
to dewatering,subconsultant work scheduling/work and time to complete the work. Billed out as Lump Sum C0 41.
An additional two working days increase Is being requested onto the allowable working days.
EQUIPMENT LABOR
Equip.No. Equipment Descrlption Hours Equip.Rate Amount Craft No. labor Description Hour Type Hours Rate Amount
1 Taekuchi SP iday $ 175.00 $ 175.00 David Loken RT 12 $ 49.48 $ 593.76
2 _ Anthony Merlino RT 12 $ 40.80 $ 489.60
3 Nicholas Sambo RT 12 $ 49.48 $ 593.76
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SubTotal= $ 175.00 SubTotal= $ 1,677.12
SUBCONTRACTORS MATERIALS OR INCREASE IN BID ITEM
Company Type of Wk Amount JBidItem# Description Est.Quantity Unit Unit Price
Surveyor 4 $ 1,000.00 11003 Channel Export IOU I CY J 25 $ 2,500.00
Aquatics removal 8 $1,000.00 (Includes 1 operator)
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SubTotal= $ 2,000.00 SubTotal= $ 2,500.00
SUBTOTAL LABOR $
1,677.12
MARKUP LABOR $ 486.36
SUBTOTAL EQUIPMENT $ 175.00
7 7- Q(Z-, MARKUP EQUIPMENT $ 36.75
CONTRACTOR SI�iNAI'URE (DATE) SUBTOTAL SUBCONTRACTORS $ 2,O00.D0
MARKUP SUBCONTRACTORS $ 420.00
BID ITEM INCREASE $ 2,500.00
SUBTOTAL MATERIALS
MARKUP MATERIALS
TOTAL= $ 7,295.23
+-MIX . 693.05
.a{'?x98828