HomeMy WebLinkAboutResolution - 2023-R0007 - Change Order No. 4 Contract 15325 with Red River ConstructionResolution No. 2023-R0007
Item No. 5.8
January 10, 2023
RESOLUTION
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
THAT the Mayor of the City of Lubbock is hereby authorized and directed to execute for
and on behalf of the City of Lubbock, Change Order No. 4 to that certain Contract No. 15325 by
and between the City of Lubbock and Red River Construction for the Southeast Water
Reclamation Project — Plant 3 Improvements, and related documents. Said Change Order No. 4
is attached hereto and incorporated in this resolution as if fully set forth herein and shall be
included in the minutes of the City Council.
Passed by the City Council on January 10, 2023_
TP711t, MAYOR
ATTEST:
1;� -due-4-4 ,eK
Rebe a Garza, City Secre y
APPROVED AS TO CONTENT:
Erik Rejino, ssistant City Manager
APPROVED AS TO FORM:
li Leisure, Assistant City Attorney
ccdocs/RES.Contract 15325 CO#4 -- SEWRP Plant 3
12.6.22
Office of Purchasing and Contract Management
Change Order
Contract No: 15325 Contractor: Red River Construction
Change Order No: 4 Contract Title: SEWRP — Plant 3 Improvements Project
Bid/RFP No: 20-15325-CM Project No: 92444.9242.30000
"Change Order" means a written order to a Contractor, executed by the Owner, in accordance with the Contract authorizing an addition to, deletion
from, or adjustment or revision of the requirements of the Contract documents, or an adjustment to the compensation payable to the Contractor, or to
the time for performance of the Contract and completion of the project, or a combination thereof, which does not alter the nature of project and is an
integral part of the project objective. Adjustments to "Estimated Quantities" to a line time in a Unit Price Contract do not require a Change Order. All
work that alters the nature of the construction or that is not an integral part of the project objective must be let out for public bid.
Description of Change (alteration, deviation, addition, or deletion) caused by conditions encountered during construction not covered by the
Per attached backup material, this Change Order No 4 includes the following items: Item 1) Fumishing and installing two replacement 6-in WAS plug valves at a
cost of+$9,168 17 and 2 additional days of construction time. Item 2 Furnishing and installing Y-strainers on NPW lines at Secondary Clarifiers and Scum Pump
Stations at a cost of+$5,573.52 and 2 additional days of construction time Item 3) Grout repair in Secondary Clarifier No. 1 at a cost of+$8,595.27 and 2
additional days of construction time. Item 4) Replacement of 30-inch Plug Valve for AB No 2 is deferred with no cost or time. Item 5) Intermediate air header
support at a cost of +$23,430 71 and 14 additional days of construction time. Item 6) Furnishing and installing two Hot Box enclosures at RAS pump seal woter
panels at a cost of+$53,068 41 and 14 additional days of construction time Item 7) Modification of last air header support at a cost of+$18,841.70 and 30
Where the Change Order is negotiated, the Change Order must be fully documented and itemized as to costs, including material quantities, material
costs, taxes, insurance, employee benefits, other related costs, profit and overhead. Where certain unit prices are contained in the initial Contract, no
deviations are allowed in computing negotiated change order costs.
ITEMIZED COSTS MUST BE FULLY DOCUMENTED AND ATTACHED TO THIS FORM.
ITEM
DESCRIPTION
AMOUNT
A.
ORIGINAL CONTRACT VALUE:
$7 257 052.00
B.
AMOUNT OF THIS CHANGE ORDER: Note: Council approval required if +/-) $50,000
$118 677.78
COST CENTER: 92444 1 ACCOUNT: 9242.30000
C.
PERCENT OF CONTRACT VALUE THIS CHANGE ORDER B/A
1.64%
D.
AMOUNT OF PREVIOUS CHANGE ORDERS:
$803 004.97
E.
TOTAL AMOUNT OF ALL CHANGE ORDERS +D
$921 682.75
F.
PERCENT OF CONTRACT OF ALL CHANGE ORDERS (E/A): 25% maximum
12.70%
G.
NEW C0N'I*RAC**' AMUUNI' A+l; :
$8,178 734.75
It is mutually agreed that the above dollar amount and the time extension, as applicable, as set forth in this Change Order constitutes full compensation
to the Contractor for all costs, expenses and damages to the Contractor, whether direct, consequential or otherwise, in anyway incident to, or arising
out of, or resulting directly or indirectly; from the work performed or modified by the Contractor under this Change Order.
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01-10-2023
Date (8) Cit Secretary
Council Date: January 10, 2023 Agenda Item #: 5.8 Resolution #:
11/2122
Date
Date
l;L,-L-a->-
Date
2023-R0007
PUR-45 (Rev 0&2018)
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Engineers... Working Wonders With Water®
November 21, 2022
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
1314 Avenue K
Lubbock, TX 79401
Subject: SEWRP Plant 3 Improvements Project
Change Order #4
Dear Mr. Fekete:
Attached with this letter is documentation for Change Order #4.
Item
Description
Cost Impact
Time Impact
Status
1
Furnishing and installing two replacement 6-in WAS
+$9,168.17
2 days
Recommended by
plug valves
Carollo
2
Furnishing and installing Y-strainers on NPW lines
+$5,573.52
2 days
Recommended by
at Secondary Clarifiers and Scum Pump Stations
Carollo
3
Grout repair in Secondary Clarifier No. 1
+$8,595.27
2 days
Recommended by
Carollo
4
Replacement of 30-inch Plug Valve for AB No. 2
+$85,397.32
3 days
Deferred to future
(not included)
(not included)
project
5
Additional intermediate air header support
+$23,430.71
14 days
Recommended by
Carollo
6
Furnishing and installing two Hot Box enclosures at
+$53,068.41
14 days
Recommended as
RAS pump seal water panels
modified by Carollo
7
Modification of last pipe support with additional fixed
+$18,841.70
30 days
Recommended by
pipe saddle
Carollo
Total Contract Impacts from CO #4 PCOs:
+$118,677.78
+64 days
Items recommended for inclusion with Change Order #4 are described in more detail as follows:
Item 1
Of the two WAS (waste activated sludge) pumps located in the Aeration Basin Piping Gallery,
one is new with this Plant 3 Improvements Project, and the other was installed under the
previous Solids Handling Improvements Project. Under this Project, the WAS pump installed
previously has been relocated to the opposite end of the Aeration Basin Piping Gallery, a
change that reduced the length of WAS piping required, and improved access for operation and
maintenance. The relocated pump had used isolation valves associated with the original WAS
pump the relocated pump replaced. The WAS pump isolation valves developed leaks related to
the age of the valves, necessitating replacement of the two eccentric plug valves.
89008.30122-11-21 Fekete.docx 8911 Capital of Texas Highway North, Suite 2200, Austin, Texas 78759
P. 512.453.5383 F. 512.453.0101
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 2
Red River Construction (RRC) has proposed $9,168.17 and two additional days of contract time
for furnishing and installing the replacement plug valves. The Engineer and RPR have reviewed
the request, and have found the cost and time to be in line with what would be expected.
The following documents are attached to support Item 1:
1. Potential Change Order (PCO) #024 dated May 12, 2022 from Heath Staffeld of RRC
with the proposal and cost backup for the additional work.
2. PCO #024 Response dated May 19, 2022 from Jason Anderson of Carollo Engineers
with the Engineer's response to the proposal.
Item 2
Plant 3 has not had NPW (non -potable water) service for many years. The SEWRP Plant 3
Improvements Project includes a new NPW (non -potable water) loop to provide reliable NPW
service water for washdown and spray nozzles. The NPW loops for both Plant 3 and Plant 4
have historically suffered with plugged lines due to WAS media migrating from the Plant 4
aeration basins. To protect the spray nozzles associated with the two secondary clarifiers, and
the two scum pump stations it is recommended that Y-strainers be installed on the NWP lines
serving each clarifier and pump station.
RRC proposed a cost of $5,573.52 and two additional days of contract time to furnish and install
the Y-strainers. The Engineer and RPR have reviewed the proposal, and have found the cost
and effort to be in line with what would be expected, and also agree with the request for a 2-day
contract time extension associated with this additional work.
The following documents are attached to support Item 2:
1. Potential Change Order (PCO) #025 dated May 12, 2022 from Heath Staffeld of RRC
with the proposal and cost backup for the additional work.
2. PCO #025 Response dated May 19, 2022 from Jason Anderson of Carollo Engineers
with the Engineer's response to the proposal.
Item 3
The Plant 3 Improvements Project includes replacement of the sludge collection mechanism in
each secondary clarifier. In the process of preparing the existing concrete floor of Secondary
Clarifier No. 1 the Contractor discovered the original grout used to level the floor was
delaminating from the underlying cast -in -place concrete floor in approximately a 40 ft by 60 ft
section of the floor along the radius of the clarifier. It is important that the grout not end up
breaking loose, and possibly damaging the new rotating hydraulic suction header. To eliminate
the potential of future problems, the Contractor removed the delaminated grout, and replaced
the grout with new non -shrink grout.
89008.30122-11-21 Fekete.dom
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 3
RRC proposed a cost of $8,595.27 and an additional 3 days of contract time for the grout
replacement/repair. The Engineer and RPR have reviewed the proposal, and have found the
cost and effort to be in line with what would be expected, but believe a 2-day contract time
extension for this additional work is enough.
The following documents are attached to support Item 3:
1. Potential Change Order (PCO) #026 dated June 13, 2022 from Heath Staffeld of RRC
with the proposal and cost backup for the additional work.
2. PCO #026 Response dated July 12, 2022 from Jason Anderson of Carollo Engineers
with the Engineer's response to the proposal.
Item 4
Each of the three aeration basins in Plant 3 have a 30-inch diameter plug valve for inlet
isolation. The plug valve for Basin No. 2 is inoperable. The City requested a proposal for
replacement of this plug valve. The Engineer recommended the plug valve be replaced by a
knife gate valve, which costs much less than a plug valve, and is far easier to install, while
providing the same service.
RRC proposed a cost of $85,397.32 and an additional 3 days of contract time for the valve
replacement. The Engineer and RPR reviewed the proposal, and found the cost and time to be
in line with what would be expected. but believe a 2-day contract time extension for this
additional work is enough. However, the City has elected to defer this improvement to a
future project. As such, PCO #027 has been voided, rather than rejected, and no cost or time
for this Item 4 is reflected in Change Order A.
The following documents are attached to support Item 4:
1. Potential Change Order (PCO) #027 dated June 22, 2022 from Heath Staffeld of RRC
with the proposal and cost backup for the additional work.
2. PCO #027 Response dated July 12, 2022 from Jason Anderson of Carollo Engineers
with the Engineer's response to the proposal.
Item 5
The SEWRP Plant 3 Improvements Project includes construction of a new elevated stainless
steel air header to replace the buried air header that has corroded and is leaking. This leaking
buried header is a replacement of the original buried air header, which was also replaced due to
leaking. To support the new air header along the route in front of the blower building, to the
aeration basin a series of drilled concrete piers were designed. The position of the piers was
selected based on Record Drawing information for the location of buried piping and utilities, and
to adequately support the 30-inch diameter header with the fewest number of drilled piers.
During construction, the Contractor performed subsurface investigations, and determined that
the pier that was to be located just before the first 45-degree bend would instead have to be
89008.30122-11-21 Fekete.docn
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 4
located after that bend. This relocation resulted in an unsupported length of air header that
requires an intermediate support. This additional support cannot be a drilled pier, and will
instead be a spread footing, and steel column, for which a detail was created by Carollo's
structural subconsultant. Carollo issued a request for proposal to provide the intermediate
support.
RRC proposed a cost of $23,430.71 and an additional 14 days of contract time for the additional
work associated with constructing the intermediate pipe support. The Engineer and RPR have
reviewed the proposal, and have found the cost and effort to be in line with what would be
expected, and agree with the request for a 14-day contract time extension associated with this
additional work.
The following documents are attached to support Item 5:
1. PCO #028 dated August 16, 2022 from Jason Anderson of Carollo Engineers with the
Request for Proposal and Structural Detail for the additional work.
2. PCO #028 Response with Proposal dated September 19, 2022 from Heath Staffeld of
RRC with the proposal and cost backup for the additional work.
3. PCO #028 Response dated October 14, 2022 from Jason Anderson of Carollo
Engineers with the Engineer's response to the proposal.
Item 6
The SEWRP Plant 3 Improvements Project includes installation of four new vertical turbine
solids handling (VTSH) RAS Pumps, two pumps per secondary clarifier. The pumps require seal
water to the shaft bearings in the pump column, and this flow of water is critical to pump
operation. During the extreme freezing temperatures of February 2021, the seal water piping on
the Secondary Clarifier No. 2 RAS pumps (the only pair installed at the time) was insulated and
temporarily heat -traced. Given the critical nature of the seal water panels, a more permanent
solution was sought to eliminate the risk of the piping freezing. Carollo issued a request for
proposal through a PCO, with a detail showing a proposed solution involving the installation of
aluminum Hot Box enclosures around both seal water panels. The solution includes
construction of new equipment pads beneath each seal water panel that will support the
enclosure, and electrical connection of a pair of heaters inside each enclosure.
RRC proposed a cost of $53,068.41, and an additional 14 days of contract time for the
additional work associated with furnishing and installing the two Hot Box enclosures. The
Engineer and RPR have reviewed the proposal, and have found the cost and effort to be in line
with what would be expected, and agree with the request for a 14-day contract time extension
associated with this additional work.
The following documents are attached to support Item 6:
1. PCO #029 dated September 15, 2022 from Jason Anderson of Carollo Engineers with
the Request for Proposal and Structural Detail for the additional work.
89008.30122-11-21 Fekete.docx
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 5
2. PCO #029 Response with Proposal dated October 7, 2022 from Heath Staffeld of RRC
with the proposal and cost backup for the additional work.
3. PCO #029 Response dated October 14, 2022 from Jason Anderson of Carollo
Engineers with the Engineer's response to the proposal.
Item 7
The Plant 3 Improvements Project did not propose any modifications to the four existing
blowers, other than modifications to the suction and discharge piping. Unfortunately, one of the
blowers suffered a failure requiring replacement. The replacement blower is on site, and the
SEWRP staff would like assistance from the Contractor in placing the new blower on the
equipment pad. Upon field investigation by the Contractor, they determined that the original
concrete equipment pad was far enough out of level as to make installation of the new blower,
and connection of the blower to the new piping extremely difficult. To avoid the need for
excessive shimming, the Contractor proposes to demolish the existing equipment pad and
construct a new, level pad. The new pad is recommended by the Engineer.
RRC proposed a cost of $27,862.92 for blower installation, and $3,801.00 for demolition and
reconstruction of the existing blower pad ($31,663,92 total), and an additional 7 days of contract
time for the additional work associated with installation of the new blower on a new equipment
pad. The Engineer and RPR have reviewed the proposal, and have found the cost and effort to
be in line with what would be expected, and agree with the request for a 7-day contract time
extension associated with this additional work.
The following documents are attached to support Item 7:
1. PCO #030 dated September 28, 2022, and PCO #030.1 dated November 9, 2022 from
Heath Staffeld of RRC with the proposals and cost backup for the additional work.
2. PCO #030 Response dated October 14, 2022, and PCO #030.1 dated November 10,
2022 from Jason Anderson of Carollo Engineers with the Engineer's response to the
proposals.
Item 8
Due to an accumulation of solids in the Plant 3 Primary Clarifiers, the new RAS pumps installed
under the Plant 3 Improvements Project have experienced several instances of being plugged
to the point a pump or pumps needed to be pulled to allow manual removal of material caught in
the Vertical Turbine Solids Handling pump columns. The Contractor previously submitted a
PCO #019 for the cost to pull two RAS pumps the first time a full -stoppage occurred, shipping
the pumps to the Manufacturer's shop in Waco for evaluation and repair. In this PCO #019 the
Contractor also submitted a cost for additional instances of pulling pumps for clearing (not to
ship for repair) at $4,485.94 per incident.
RRC proposed a cost of $26,915.64, and an additional 6 days of contract time for the additional
work associated with six addition times to pull and de -clog pumps. The Engineer and RPR have
8900B.30I22-11-21 Fekete.docx
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 6
reviewed the proposal, and have found the cost and effort to be in line with what would be
expected, but do not agree with the request for a 6-day contract time extension associated with
this additional work.
The following documents are attached to support Item 8:
1. PCO #031 dated October 18, 2022 from Heath Staffeld of RRC with the proposal and
cost backup for the additional work.
2. PCO #031 Response dated October 24, 2022 from Jason Anderson of Carollo
Engineers with the Engineer's response to the proposal.
Item 7
The new air piping includes a new elevated 30-inch diameter stainless steel pipe from the
blower building to the aeration basins. Once reaching the existing aeration basin piping gallery,
the air piping changes from being supported by drilled concrete piers to being supported from
stainless steel supports bolted through the north wall of the aeration basin piping gallery wall.
Each support has a top plate with either a single unrestrained pipe saddle functioning as an
intermediate support, or with two pipe saddles, one fixed, and one sliding, to control expansion,
and support on either side of a pipe coupling. The last support before the end of the air header
is used to support the 30-inch by 20-inch tee that conveys air to Aeration Basin 3. This last
support was shown with a single fixed pipe saddle, but the tee is connected with a pipe coupling
that should be supported on either side of the coupling. A temporary pipe support has been in
place to support the tee, and the Contractor was asked to propose the cost and time for
modification of the pipe support to allow addition of a second pipe saddle. The Engineer worked
with their Structural Subconsultant to develop a detail for stiffening the top plate to allow the
existing support to function as needed with two pipe saddles.
RRC proposed a cost of $18,841.70, and an additional 30 days of contract time for the
additional work associated with material and welding to add a second pipe saddle support. The
Engineer and RPR have reviewed the proposal, and have found the cost and effort to be in line
with what would be expected, and agree with the request for a 30-day contract time extension
associated with this additional work due to the lead time on the additional stainless steel pipe
saddle support.
The following documents are attached to support Item 8:
1. PCO #032 dated November 3, 2022 from Heath Staffeld of RRC with the proposal and
cost backup for the additional work.
2. PCO #032 Response dated November 4, 2022 from Jason Anderson of Carollo
Engineers with the Engineer's response to the proposal.
The change in contract price associated with items 1 through 9 is summarized below:
• Original contract price : $7,257,052.00
8900B.30 1 22-11-21 Fekete.docx
carollo.com
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
November 21, 2022
Page 7
• Net increase in price of this change order: +$118,677.78
• Contract price with all approved change orders: $8,178,734.75
• Original contract time: 600 Days to Final Completion
• Net increase of time with this change order: +64 days
• Contract time with all approved change orders: 913 days to Final Completion
After you have had a chance to review this information, we are available to discuss any
questions or comments, at your convenience. Please contact, Jason Anderson, or myself with
any questions.
Thank you for the opportunity to provide construction phase services for the City of Lubbock.
We look forward to continuing to work with you and City staff on this project through its
successful completion.
Sincerely,
CAROLLO ENGINEERS, INC.
4k�'; - �. 1'1�
Hani E. Michel, P.E.
Project Manager
JEAJea
cc: Josh Kristinek, P.E.
Mary Gonzales
Mark Aaron Carpenter
Jason Anderson, P.E.
8900B.30122-11-21 Fekete.docx
carollo.com
CERTIFICATE OF INTERESTED PARTIES FORM 1295
1of1
Complete Nos. 1- 4 and 6 if there are interested parties.
OFFICE USE ONLY
Complete Nos, 1, 2, 3, 5, and 6 if there are no interested parties.
CERTIFICATION OF FILING
Certificate Number:
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
2022-966099
Red River Construction Co.
Wylie, TX United States
Date Filed:
12/20/2022
2
Name of governmental entity or state agency that is a party to the contract for which the form is
being filed.
City of Lubbock
Date Acknowledged:
3
Provide the identification number used by the governmental entity or state agency to track or identify the contract, and provide a
description of the services, goods, or other property to be provided under the contract.
CHANGE ORDER #4
CHANGE ORDER #4 TO THE SEWRP #3 IMPROVEMENTS
Nature of interest
4
Name of Interested Party
City, State, Country (place of business)
(check applicable)
Controlling
I Intermediary
5
Check only if there is NO Interested Party.
X
6
UNSWORN DECLARATION
My name is Dean Porter and my date of birth is
My address is 2804 Capital Street Wylie Texas 75098 USA
(street) (city) (state) (zip code) (country)
I declare under penalty of perjury that the foregoing is true and correct.
Executed in Collin County, State of Texas on the 2oth day of December PO22
(month) (year)
Signature of authorized agent of contracting business entity
(Declarant)
Forms provided by Texas Ethics Commission www.ethics.state.tx.us version va.o.-L.,juL;o suuu
CERTIFICATE OF INTERESTED PARTIES
FORM 1295
1 of 1
Complete Nos. 1 - 4 and 6 if there are interested parties.
OFFICE USE ONLY
Complete Nos. 1, 2, 3, 5, and 6 if there are no interested parties.
CERTIFICATION OF FILING
Certificate Number:
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
2022-966099
Red River Construction Co.
Wylie, TX United States
Date Filed:
12/20/2022
2
Name of governmental entity or state agency that is a party to the contract for which the form is
being filed.
City of Lubbock
Date Acknowledged:
02/28/2023
g
Provide the identification number used by the governmental entity or state agency to track or identify the contract, and provide a
description of the services, goods, or other property to be provided under the contract.
CHANGE ORDER #4
CHANGE ORDER #4 TO THE SEWRP #3 IMPROVEMENTS
4
Name of Interested Party
City, State, Country (place of business)
Nature of interest
(check applicable)
Controlling
Intermediary
5
Check only if there is NO Interested Party. ❑
X
6
UNSWORN DECLARATION
My name is and my date of birth is
My address is
(street) (city) (state) (zip code) (country)
I declare under penalty of perjury that the foregoing is true and correct.
Executed in County, State of on the day of , 20
(month) (year)
Signature of authorized agent of contracting business entity
(Declarant)
Forms provided by Texas Ethics Commission www.ethics.state.tx.us Version V3.5.1.3ac88bc0