HomeMy WebLinkAboutReg 2025-08-04 Item 6E - Bid Award / Contract - Sewer Lift Station #2 Structural Modifications with Combined Construction for $282,949.52ITEM INFORMATION
STAFF SPONSOR: ADIB ALTALLAL ORIGINAL AGENDA DATE: 08/04/25
AGENDA ITEM TITLE Lift Station No. 2 Structural Modifications - Construction Bid Award
CATEGORY Discussion Motion Resolution Ordinance Bid Award Public Hearing Other
Mtg Date Mtg Date Mtg Date Mtg Date 8/4/25 Mtg Date Mtg Date
SPONSOR Council Mayor HR DCD Finance Fire TS P&R Police PW Court
SPONSOR’S
SUMMARY
The Lift Station No. 2 Structural Modifications Project was advertised for bid in March 2025
for three weeks, and two bids were received and opened on March 25, 2025. The apparent
low bidder is Combined Construction, Inc. with a bid of $282,949.52. This project will
maintain safety and serviceability for operations and maintenance staff. The Council is
being asked to award a construction contract to Combined Construction, Inc. in the amount
of $282,949.52 for the Lift Station No. 2 Structural Modifications Project.
REVIEWED BY Trans&Infrastructure CommunitySvs/Safety Finance Comm. Planning/Economic Dev.
LTAC Arts Comm. Parks Comm. Planning Comm.
DATE: 07/28/25 COMMITTEE CHAIR: MOHAMED ABDI
RECOMMENDATIONS:
SPONSOR/ADMIN. Public Works Department
COMMITTEE Unanimous Approval; Forward to the Regular Consent Agenda
COST IMPACT / FUND SOURCE
EXPENDITURE REQUIRED AMOUNT BUDGETED APPROPRIATION REQUIRED
$282,949.52 $500,000.00 $0.00 Fund Source:
Comments:
MTG. DATE RECORD OF COUNCIL ACTION
08/04/25
MTG. DATE ATTACHMENTS
08/04/25 Informational Memorandum dated 07/25/25
Bid tabulation
Combined Construction, Inc. Bid Package
Minutes from Transportation and Infrastructure Committee meeting of 07/28/25
C OUNCIL AGENDA S YNOPSIS
----------------------------------Initials --------------------------------- I TEM N O.
Meeting Date Prepared by Mayor’s review Council review
08/04/25 JR 6.E.
Mtg Date 8/4/25
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INFORMATIONAL MEMORANDUM
TO: Transportation & Infrastructure Services Committee
FROM: Jen Tetatzin, Public Works Director
BY: Adib Altallal, Utilities Engineer
CC: Mayor Thomas McLeod
DATE: July 25, 2025
SUBJECT: Lift Station No. 2 Structural Modifications
Construction Award
ISSUE
Award a construction contract for the Lift Station No. 2 Structural Modifications Project to the lowest
responsible bidder, Combined Construction, Inc.
BACKGROUND
Lift Station No. 2 is a critical component of the City’s sewer collection system. In 2015, upgrades
were identified to improve pump reliability and reduce maintenance needs. The City completed
major upgrades in 2022, which included new pumps, valves, and piping. As the system has been in
operation, the need for improved structural access and modifications was identified to maintain
safety and serviceability for operations and maintenance staff. This project provides structural
retrofits within the existing lift station to facilitate safe removal and replacement of pumps, including
the installation of a new steel gantry beam and hoist, modification of the concrete slab, and related
structural improvements.
DISCUSSION
The Lift Station No. 2 Structural Modifications Project was advertised for bid in March 2025 for three
weeks, and two bids were received and opened on March 25, 2025. The engineer’s estimate for the
construction work was $200,839.50. The apparent low bidder is Combined Construction, Inc. with a
bid of $282,949.52. Staff and the City’s consultant, PACE Engineers, have reviewed the bids for
accuracy and responsiveness. Combined Construction, Inc. submitted the lowest responsive bid,
which is approximately 40% higher than the engineer’s estimate. The increased cost is attributed to
current market conditions and the specialized nature of the structural retrofits within an active lift
station.
FINANCIAL IMPACT
Contract Budget (‘26)
LS2 Structural Modifications $282,949.52
Contingency (20%) $56,589.91
Total $339,539.43 $500,000.00
RECOMMENDATION
The Council is being asked to award a construction contract to Combined Construction, Inc. in the
amount of $282,949.52 for the Lift Station No. 2 Structural Modifications Project and to consider this
item on the Consent Agenda at the August 4, 2025 Regular Council Meeting.
ATTACHMENTS
Bid Tabulations
Combined Construction, Inc. Bid Package
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Owner: CITY OF TUKWILA Bid Date:3/25/25
Project: LS #2 STRUCTURAL RETROFIT Bid Time:10:00 AM
Engineers: PACE EngineersPACE ENGINEERS Job No. 80040201
ITEM NO.
ITEM OR
TASK DESCRIPTION UNIT UNIT PRICE COST UNIT PRICE COST UNIT PRICE COST
1 Mobilization LS 1 $14,750.00 14,750.00$ 34,000.00 34,000.00$ 40,000.00 40,000.00$
2 Structural Retofit of Existing Lift Station LS 1 $135,000.00 135,000.00$ $182,400.00 182,400.00$ $440,000.00 440,000.00$
3 Modification of Inlet Drop Pipe LS 1 $5,000.00 5,000.00$ $9,680.00 9,680.00$ $20,000.00 20,000.00$
4 Site Restoration and Cleanup LS 1 $7,500.00 7,500.00$ $10,680.00 10,680.00$ $7,500.00 7,500.00$
5 Unexpected Site Changes FA 1 $20,000.00 20,000.00$ $20,000.00 20,000.00$ $20,000.00 20,000.00$
-$ -$ -$
SUBTOTAL 182,250.00$ 256,760.00$ 527,500.00$
10.20%SALES TAX 18,589.50$ 26,189.52$ 53,805.00$
TOTAL BID 200,839.50$ 282,949.52$ 581,305.00$
Error in Bid
Apparent low bidder
BID TABULATION
General Mechanical
I hereby certify that this tabulation represents all bids received and that
the total bid prices have been checked or corrected based on the unit
prices provided in the bids. Corrections did not change the order of the
bids, unless noted otherwise.
ENGINEER'S ESTIMATE Combined Construction
https://tukwilawa.sharepoint.com/sites/publicworks/engineering/Shared Documents/Projects/A- SW Projects/LS2 Structural Modifications/01 - Preliminary Engineering/Draft Bid Documents/LS 2 Bid Tab
Form 4/16/202583
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City of Tukwila
City Council Transportation & Infrastructure Services Committee
Meeting Minutes
July 28, 2025, 5:30 p.m. – Hybrid Meeting; City Council Conference Room & MS Teams
Councilmembers Present Mohamed Abdi, Chair; Hannah Hedrick
Staff Present Jen Tetatzin, Griffin Lerner, David Baus, Adib Altallal, Catrien de Boer,
Adam Cox, Bryan Still, Mike Perfetti
I.PRESENTATION
II.BUSINESS AGENDA
A.Bid Award: 2025 Annual Overlay
Staff is seeking approval to award a bid to ICON Materials in the amount of $1,984,599.00 plus
contingency for the project.
Committee Recommendation
Majority approval. Forward to August 4, 2025 Regular Meeting Consent Agenda.
B.2025 Annual Overlay Project Cost Share Agreement
Staff is seeking approval of cost-sharing agreement with Water District 125 to accept
$112,336.40 to help fund construction of the 2025 Annual Overlay Project.
Committee Recommendation
Majority approval. Forward to August 4, 2025 Regular Meeting Consent Agenda.
C.Bid Award: Sewer Lift Station 2 Structural Modifications Project
Staff is seeking approval of a contract with Combined Construction, Inc. in the amount of
$282,949.52 for construction of the project.
Committee Recommendation
Majority approval. Forward to August 4, 2025 Regular Meeting Consent Agenda.
D.Contract Amendment: Sewer Lift Station 2 Structural Modifications Project
Staff is seeking approval of Amendment 2 to the agreement with Pace Engineers in the amount
of $43,880.00 for additional construction management and inspection on the Project.
Committee Recommendation
Majority approval. Forward to August 4, 2025 Regular Meeting Consent Agenda.
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