HomeMy WebLinkAboutTIS 2021-04-26 Item 2D - Bid Award - Gary Harper Construction for Sewer Lift Stations #4 and #12 RetrofitsCity of Tukwila
Allan Ekberg, Mayor
Ptrbbir Works Ocpnrtrrrent - Hari Porrnekanti, Director/city Engineer
INFORMATIONAL MEMORANDUM
TO: Transportation and Infrastructure Services Committee
FROM: Hari Ponnekanti, Public Works Director/City Engineer
BY: Adib Altallal, Utilities Engineer
CC: Mayor Allan Ekberg
DATE: April 23, 2021
SUBJECT: Sewer Lift Stations No. 4 and No. 12 Retrofits
Project Nos. 91640202 & 90440207
Bid Award to Gary Harper Construction Inc.
ISSUE
Award contract to Gary Harper Construction Inc. for the Sewer Lift Stations No. 4 and No. 12 Retrofits
Project.
BACKGROUND
During the cleaning and routine inspections of the sewer lift stations by City crews, they discovered
corrosion of the wet well at Sewer Lift Station No. 12. The damaged concrete will be repaired and the
entire wet well will be recoated. The control panel at Sewer Lift Station No. 4 is in poor and the
condition is located deep below grade. The panel will be moved into an enclosure above grade.
ANALYSIS
A call for bids was advertised for the Sewer Lift Stations No. 4 and No. 12 Retrofits Project on March 31
and April 7, 2021. Two contractors returned bids to the City on April 14, 2021. The confirmed lowest bid
was Gary Harper Construction, Inc. with a bid of $342,411.00. The Engineer's Estimate was
$442,602.00. Gary Harper Construction Inc has done satisfactory work for the City in the past.
BUDGET AND BID SUMMARY
Gary Harper Construction Inc
Contingency 20%
Grand Total
Engineer's Annual Sewer
Bid Amount Estimate 2021 Budget
$ 342,411.00 $442,602.00
68,482.20
$ 410,893.20 $ 442,602.00 $ 750,000.00
RECOMMENDATION
Council is being asked to award the construction of Sewer Lift Stations No. 4 and No. 12 Retrofit
Projects to Gary Harper Construction Inc., for a total contract amount of $342,411.00 and grant budget
authority to the Project Management Team up to the amount of $410,893.20 (20% contingency and
10.1% sales tax) and consider this item on the Consent Agenda at the May 3, 2021 Regular Meeting.
Attachments: Page 68, & 71 2021 CIP
Bid Tabulation
https://tukwilawa.sharepoint.com/sites/publicworks/engineering/PW Drop Box/01 TIC Agenda/2021 Agenda Items/TIC 04-26-21/d. Sewer Lift Station 4 8 12/Info Memo Bid Award Gary Harper Construction Inc.docx 19
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2021 to 2026
PROJECT: Annual Sewer Repair Program Project No. 9xx40201
Reduce sewer line infiltration and inflow (I & I) through groundwater intrusion or storm events as a
DESCRIPTION: result of damaged deteriorating systems or illicit connections. Includes small repairs and capital
maintenance.
JUSTIFICATION: Decreases treatment, discharge, and pumping costs.
STATUS: Annual program is determined after pipeline TV inspection reports are completed.
MAINT. IMPACT: Less maintenance costs through rehabilitation of aging system.
COMMENT: Ongoing project, only one year actuals shown in first column.
FINANCIAL Through Estimated
(in $000's)
2019 2020 2021
2022 2023 2024 2025 2026 BEYOND TOTAL
EXPENSES
Design
0
15
75
75
70
70
70
70
500
945
Land (R/W)
0
Const. Mgmt.
10
112
120
105
105
115
115
200
882
Construction
0
75
750
800
700
700
700
700
1,000
5,425
TOTAL EXPENSES
0
100
937
995
875
875
885
885
1,700
7,252
FUND SOURCES
Awarded Grant
0
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
0
100
937
995
875
875
885
885
1,700
7,252
TOTAL SOURCES
0
100
937
995
875
875
885
885
1,700
7,252
Project Location:
Entire System
2021 - 2026 Capital Improvement Program
68
20
CITY OF TUKWILA CAPITAL PROJECT SUMMARY
2021 to 2026
PROJECT: Sewer Lift Stations & Generator Upgrades Project No. 90440206
DESCRIPTION: This project will be used to replace/upgrade the seven sewer lift stations and backup generators in phases.
JUSTIFICATION: Aging sewer system requires the replacement of motors, pumps, and controls at older lift stations to reduce
maintenance. Generators have a lifespan of 15 years and need to be replaced more frequently than pumps.
Sewer Lift Stations No. 3 & 4 are at the end of their life cycles and need to be rebuilt with backup generators.
STATUS: Lift Station No. 4 is scheduled for 2020/2021, and Lift Station No. 3 is scheduled for 2024/2025. Lift Station
No. 5 is in beyond.
MAINT. IMPACT: New pumps will reduce the liability of the existing pumps that are obsolete and prone to fail.
COMMENT: Additional right-of-way or property will be required for the new backup generators to be installed.
FINANCIAL Through Estimated
(in $000's)
2019 2020 2021
2022 2023 2024 2025 2026 BEYOND TOTAL
EXPENSES
Design
5
5
20
20
100
150
Generators
50
25
10
10
10
105
Const. Mgmt.
10
10
50
50
100
220
Construction
300
200
400
400
700
2,000
TOTAL EXPENSES
0
365
240
0
0
480
480
0
910
2,475
FUND SOURCES
Awarded Grant
0
Proposed Grant
0
Mitigation Actual
0
Mitigation Expected
0
Utility Revenue
0
365
240
0
0
480
480
0
910
2,475
TOTAL SOURCES
0
365
240
0
0
480
480
0
910
2,475
2021 - 2026 Capital Improvement Program
71
21
CITY OF TUKWILA
DEPARTMENT OF PUBLIC WORKS
Tukwila Lift Stations #4 and #12 Retrofits
BID TABULATION
Tukwila Project # 91440201
Correction
Apparent Low Bid
April 14, 2021
Gary Harper Construction Inc
Award Construction Inc
Engineer's Estimate
No.
Item
Qty
Unit
Unit Cost
Total Cost
Unit Cost
Total Cost
Unit Cost
Total Cost
Schedule A: Lift Station No. 4
A-1
Mobilization
1
LS
$
20,600.00
$
20,600.00
$ 18,000.00
$ 18,000.00
$ 35,000.00
$ 35,000.00
A-2
Temporary Water Pollution/Erosion Control
1
LS
$
4,800.00
$
4,800.00
$ 2,000.00
$ 2,000.00
$ 1,000.00
$ 1,000.00
A-3
Resolution of Utilitiy Conflicts
1
FA
$
3,000.00
$
3,000.00
$ 3,000.00
$ 3,000.00
$ 3,000.00
$ 3,000.00
A-4
Project Temporary Traffic Control
1
LS
$
3,800.00
$
3,800.00
$ 6,000.00
$ 6,000.00
$ 3,000.00
$ 3,000.00
A-5
Electrical
1
LS
$
85,400.00
$
85,400.00
$ 100,000.00
$ 100,000.00
$ 270,000.00
$ 270,000.00
A-6
Temporary Bypass Pumping
1
LS
$
43,900.00
$
43,900.00
$ 35,000.00
$ 35,000.00
$ 12,500.00
$ 12,500.00
A-7
Site Restoration
1
LS
$
7,700.00
$
7,700.00
$ 10,000.00
$ 10,000.00
$ 500.00
$ 500.00
A-8
Trench/Excavation Safety
1
LS
$
1,000.00
$
1,000.00
$ 2,000.00
$ 2,000.00
$ 1,000.00
$ 1,000.00
A-9
Electrical Permits
1
FA
$
1,000.00
$
1,000.00
$ 1,000.00
$ 1,000.00
$ 1,000.00
$ 1,000.00
A-10
Unexpected Site Chages
1
FA
$
20,000.00
$
20,000.00
$ 20,000.00
$ 20,000.00
$ 20,000.00
$ 20,000.00
Schedule B: Lift Station No. 12
Subtotal $
191,200.00
Subtotal $ 197,000.00
Subtotal $ 347,000.00
B-1
Mobilization
1
LS
$
28,500.00
$
28,500.00
$ 12,000.00
$ 12,000.00
$ 5,000.00
$ 5,000.00
B-2
Wet Well Cleaning and Lining
1
LS
$
46,300.00
$
46,300.00
$ 60,000.00
$ 60,000.00
$ 20,000.00
$ 20,000.00
B-3
Wet Well Concrete Spalling Repair
1
LS
$
10,000.00
$
10,000.00
$ 10,000.00
$ 10,000.00
$ 10,000.00
$ 10,000.00
B-4
Bypass Pumping
1
LS
$
30,000.00
$
30,000.00
$ 60,000.00
$ 60,000.00
$ 15,000.00
$ 15,000.00
B-5
Unforeseen Conditions Contingency
1
LS
$
5,000.00
$
5,000.00
$ 5,000.00
$ 5,000.00
$ 5,000.00
$ 5,000.00
Subtotal $
119,800
Subtotal $ 147,000
Subtotal $ 55,000
Sale Tax 10.1% 1 -
$
31,411.00
1
$ 34,744.00
$ 40,602.00
TOTAL
ESTIMATE
342,411.00
TOTAL BID
$ 378,744.00
TOTAL BID
$ 442,602.00
1 of 1
22