HomeMy WebLinkAboutUtilities 2015-05-12 Item 2C - Change Order #3 - Central Business District Sanitary Sewer Rehabilitation / Andover Park West-Andover Park East Sewer Repair with RL Alia CompanyCity of Tukwila
Jim Haggerton, Mayor
TO: Mayor Haggerton
Utilities Committee
FROM: Bob Giberson, Public Works Director440
BY: Mike Cusick, PE, Senior Program Manager
DATE: May 8, 2015
SUBJECT: CBQ Sanitary Sewer Rehabilitation/APW to APE Sewer Repair
Project No. 91140203, Contract No. 14-159
Change Order No. 3
ISSUE
Approve Change Order No. 3 with the R.L. Alia Company (Alia) for the APW to APE Sewer Repair Project in the amount of
$91,152.15, including sales tax.
BACKGROUND
A contract with Alia was awarded by Council on September 15, 2014 for work that included the repair of a collapsed sewer line
between APW and APE and also the installation of a manhole in Andover Park East near Strander Blvd. The Notice to
Proceed was given to the contractor on October 15, 2014 and the contractor started work on the project on December 5,
2014.
DISCUSSION
Alia was able to complete the repair of the collapsed sewer line between APW and APE in accordance with the original
construction contract. The APW sewer repair was intended to enable the entire line between APW and APE to be sliplined as
part of a second, separate contract with the Michels Corporation. During the necessary effort to clean and video the sewer line
for sliplining, a second (new) collapsed portion of the sewer line was discovered. This newly collapsed portion of the sewer
line needed to be repaired before the sliplining work could take place. Alia was then requested to repair the second collapsed
sewer line in order to allow the sliplining work to proceed.
The scope of work to repair the second sewer main collapse (Change Order No. 3) could not be estimated at the time as the
extent of the collapsed pipe was not known. Alia was asked to expose the new collapsed pipe to determine the extent of the
damage under an agreement to pay them for their time and materials. The contractor was able to expose the pipe and repair it
without any additional design effort or any need to evaluate alternatives. The entire sewer line between APW and APE was
successfully sliplined without incident by Michels after all repairs had been completed.
FISCAL IMPACT
Change Order No. 3 covers the cost for Alia to perform the repair of the second, unanticipated collapsed sewer line. Tracking
of their actual costs to perform this additional work amounted to $91,152.15, including sales tax. Since two separate contracts
were awarded as part of the same CIP project, the total contingency for the CBD Sewer Rehabilitation Project is considered.
Contract
Contract Alia $342,560.90
Contract Michels 238,270.91
Totals $580,831.81
Contingency Additional Funds Needed
$81,245.27 $44,263.41
32,118.97 0.00
$113,364.24 $44,263.41
IN
INFORMATIONAL MEMO
Page 2
After Change Order Nos. 1 and 2 and contract overruns were accounted for, there is $46,888.74 remaining in the contingency.
To cover the full amount of Change Order No. 3 at $91,152.15, the additional $44,263.41 required to complete the APW to
APE Sewer Repair Project will be funded from the 2015 construction funds of the CBD Sewer Rehabilitation Project.
RECOMMENDATION
Council is being asked to approve Change Order No. 3 to Contract No. 14 -159 with the R.L. Alia Company in the amount of
$91,152.15 for the APW to APE Sewer Repair Project and consider this item on the Consent Agenda at the May 18, 2015
Regular Meeting.
Attachments: Spreadsheet of Costs
Page 71, 2015 CIP
WAPW Eng\PROJECTSIA- SW Projects \CBD Sewer Rehabilitation (91140203) \Constructiominfo Memo JC Alia CO #3 05 -08 -15 rt gl sb1.docx
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CITY OFTWKVVLA CAPITAL PROJECT SUMMARY
2015 to 2020
PROJECT:
CBD Sanitary Sewer Rehabilitation Project No. 91140208
The osbea�uounon�epipe in the CBD(commem�| business die�oViaappmxm�e�45yeam�dand
D���N]PD�m'
'
becoming soft. Slip lining the pipe will reinforce the strength with little impact to roadways and minimal excavation.
|f the pipe ooUopoou.the etne��wiUhave 0obe excavated and the cost of the mpoinswiUbooign�conL|nthe
�U�UH�A�|��'
'
last five years we have had two major pipe failures on Andover Park West.
STATUS:
A Public Works Trust Fund loan was successfully obtained in 2012 for construction.
Dx4|NT.|DURuCT:
Reduced maintenance and repair costs.
20
The |imi�of the 2U13pn4ectioAPVVtn APE hnmK0ink|er Blvd hoG18(DhGt and wiUnow indudothe repair
��x8K8�NT'
to the sewer under the railroad tracks.
FINANCIAL Through Estimated
EXPENSES
Design
159
33
20
20
20
20
20
292
Const. Mgmt.
87
120
120
120
120
120
687
Construction
639
900
900
900
900
900
5,139
TOTAL EXPENSES
159
759
1 1,040
1 1,040
1 1,0401
1,040
1 1,040
1 01
01
6,118
FUND SOURCES
Awarded Grant
0
PWTF/Proposed PW1
45
250
455
750
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
114
509
585
1,040
1,040
1,040
1,040
0
0
5,368
TOTAL SOURCES
169
759
1,040
1,040
1,040
1 1,040
1 1,040
1 01
01
6,118
2015 2020 Capital Improvement Program 71