HomeMy WebLinkAboutResolution - 2017-R0346 - Archer Western Contractors - 09_28_2017 (2)Resolution No. 2017-RO346
Item No. 6.6
September 28, 2017
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. 3 to that certain Contract No. 11644 by
and between the City of Lubbock and Archer Western Contractors, LTD, for SEWRP Solids
Handling Improvements Project per Bid # 14-11644-TF, and related documents. Said Change
Order No. 3 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 September 28, 2017
DANIEL M. POPE, MAYOR
ATTEST:
Re ecca Garza, City Secre ary
APPROVED ASATO CONTENT:
Works
D AS TO FORM:
my ims, ep City Attorney
RES.ChgOrd#3.Contract-SEWRP Solids Handling Improvements Project
08.17.17
CITY OF LUBBOCK
CHANGE ORDER
Change Order #:
3
Contractor:
Archer Western Contractors, LTD
Date:
August 16, 2017
BID/ITB/RFP #:
RFP #14-11644-TF
Contract #:
11644
Project Name:
SEWRP Solids Handling Improvements Project
"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
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 the thing to be constructed and is an integral part of the project objective All work that alters the nature of the thine to be
constructed 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 specifications and
drawings of the project (attach additional pages ifnecessaty):
Per attached backup material this Change Order #3 includes the following items: Item 1) Construct sidewalk on north end of SHB odor
control at a cost of $2,944 and 1 day. Item 2) Construct access road on west side of SHB at a cost of $33,595 and 5 days. Item 3)
Construct cake loading emergency pad at a cost of $16,591 and 5 days. Item 4) Install new MH on the dewatering centrate line at a cost
of $20,316, and 7 days. Item 5) Replace cake hopper gate actuators at a cost of $98,594 and 5 days. Item 6) Construct retaining wall, slab
and stairs at SHT 6 & 7 at a cost of $15,568 and 3 days. Item 7) Reconstruct valve vault walls at SHT 6 & 7 at a cost of $9,235 and 3
days. Item 8) Install conduit and wire for additional lighting at a cost of $68,446 and 3 days. Item 9) Remove additional concrete paving
east of SHB at a cost of $22,105. Item 10) Replacement of deteriorated wall penetrations in SHT 7 at a cost of $5,188. Item 11)
Additional WAS and NPW pipe supports in SHB at a cost of $25,422. Item 12) Pumping and removal of 20-inch duckbill check valve at
a cost of $11,853 and 3 days. Item 13) Installation of suspension belt anchors beyond that originally budgeted as required by the
membrane cover manufacturer at a cost of $29,234 and 3 days. Item 14) Additional drainage structures, bollards, and condensate line
routing per RFI #3 at a cost of $21,278. Item 15) Installation of an air relief valve at the point of the centrate line passing over an existing
54-inch sewer line at a cost of $22,791 and 5 days. Item 16) Rerouting plumbing vent lines in the SHB at a cost of $6,527. Item 17)
Demo of additional CMU block wall for duct installation at a cost of $3,559. Item 18) Add containment wall, handrail, and stairs in
polymer room at a cost of $15,527. Item 19) Provide and install additional plug valves on the WAS lines at the RDTs to improve
maintenance isolation at a cost of $2,593. Item 20) Replace corroded 8-inch sludge suction line in SHT 6 at a cost of $6,457. Item 21)
Repair top of SHT 6 at a cost of $I 1,873 and 2 days. Item 22) Additional polymer to receive discounted price at a cost of $1,229.
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: $33,556,000.00
B. AMOUNT OF THIS CHANGE ORDER: Council approval required if over $25, 000 $450,925.00
C. PERCENT OF CONTRACT VALUE THIS CHANGE ORDER (B/A): 1.34%
D. AMOUNT OF PREVIOUS CHANGE ORDERS: $322,513.00
E. TOTAL AMOUNT OF ALL CHANGE ORDERS (B+D): $773,438.00
F. PERCENT OF CONTRACT OF ALL CHANGE ORDERS (E/A): 25% Maximum _ 2:30%
G. NEW CONTRACT AMOUNT (A+E): $34,329,438.00
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.
This Change Order is not valid without the followine signatures (please sign in order and return 3 originals with Contract Cover Sheet to
Purchasing and Contract Management Department): J-
(t) A&"d
CONTRACTOR Da (2) PR JECT ARCHITECT/ENGINEER Date
Approved as to Content: Ap
4�� _;;4— 9*
ER'S REP TAT IVE D e (4)
00�1/7
(5) CAPITAL PROJECTS MANAGER Date (6)
Change Orders over,845,000 require a Contract Cover Sheet and the following signatures. -
CITY F LUBBOQK ATTES :
9/28/2017 9/28/2017
(7) MAYOR Date (8) CITE E fTTARY Date
Council Date: September 28, 2017 Agenda Item #: 6. Resolution 0 2017-RO346
PWC-045 (Rev 01/08)
Resolution No. 2017-RO346
Item No. 6.6
September 28, 2017
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. 3 to that certain Contract No. 11644 by
and between the City of Lubbock and Archer Western Contractors, LTD, for SEWRP Solids
Handling Improvements Project per Bid # 14-11644-TF, and related documents. Said Change
Order No. 3 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 September 28, 2017
DANIEL M. POPE, MAYOR
ATTEST:
Re ecca Garza, City Secre ary
my ims, ep City Attorney
RES.ChgOrd#3.Contract-SEWRP Solids Handling Improvements Project
08.17.17
CITY OF LUBBOCK
CHANGE ORDER
Change Order #:
3
Contractor:
Archer Western Contractors, LTD
Date:
August 16, 2017
BID/ITB/RFP #:
RFP #14-11644-TF
Contract #:
1 11644
Project Name:
SEWRP Solids Handling Improvements Project
"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
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 the thing to be constructed and is an integral part of the project objective All work that alters the nature of the thin to o be
constructed or that is not an integ al 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 specifications and
drawings of the project (attach additional pages if necessary):
Per attached backup material this Change Order #3 includes the following items: Item 1) Construct sidewalk on north end of SHB odor
control at a cost of $2,944 and 1 day. Item 2) Construct access road on west side of SHB at a cost of $33,595 and 5 days. Item 3)
Construct cake loading emergency pad at a cost of $16,591 and 5 days. Item 4) Install new NM on the dewatering centrate line at a cost
of $20,316, and 7 days. Item 5) Replace cake hopper gate actuators at a cost of $98,594 and 5 days. Item 6) Construct retaining wall, slab
and stairs at SHT 6 & 7 at a cost of $15,568 and 3 days. Item 7) Reconstruct valve vault walls at SHT 6 & 7 at a cost of $9,235 and 3
days. Item 8) Install conduit and wire for additional lighting at a cost of $68,446 and 3 days. Item 9) Remove additional concrete paving
east of SHB at a cost of $22,105. Item 10) Replacement of deteriorated wall penetrations in SHT 7 at a cost of $5,188. Item 11)
Additional WAS and NPW pipe supports in SHB at a cost of $25,422. Item 12) Pumping and removal of 20-inch duckbill check valve at
a cost of $11,853 and 3 days. Item 13) Installation of suspension belt anchors beyond that originally budgeted as required by the
membrane cover manufacturer at a cost of $29,234 and 3 days. Item 14) Additional drainage structures, bollards, and condensate line
routing per RFI #3 at a cost of $21,278. Item 15) Installation of an air relief valve at the point of the centrate line passing over an existing
54-inch sewer line at a cost of $22,791 and 5 days. Item 16) Rerouting plumbing vent lines in the SHB at a cost of $6,527. Item 17)
Demo of additional CMU block wall for duct installation at a cost of $3,559. Item 18) Add containment wall, handrail, and stairs in
polymer room at a cost of $15,527. Item 19) Provide and install additional plug valves on the WAS lines at the RDTs to improve
maintenance isolation at a cost of $2,593. Item 20) Replace corroded 8-inch sludge suction line in SHT 6 at a cost of $6,457. Item 21)
Repair top of SHT 6 at a cost of $I 1,873 and 2 days. Item 22) Additional polymer to receive discounted price at a cost of $1,229.
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:
$33,556,000.00
B.
AMOUNT OF THIS CHANGE ORDER: Council approval required if over $25,000
$450;925 OQ .
C.
PERCENT OF CONTRACT VALUE THIS CHANGE ORDER (B/A):
134%
D.
AMOUNT OF PREVIOUS CHANGE ORDERS:
$322,513.00
E.
TOTAL AMOUNT OF ALL CHANGE ORDERS (B+D):
$773,438.00
F.
PERCENT OF CONTRACT OF ALL CHANGE ORDERS (E/A): 25% Maximum
G.
NEW CONTRACT AMOUNT (A+E):
$34,329,438.00
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.
This Change Order is not valid without the following signatures (please sign in order and return 3 originals with Contract Cover Sheet to
Purchasing and Contract Management Department): 'dJ
(1) CO TRACTOR Dat (2) PR JECT ARCHITECT/ENGINEER Date
Approved as to Content: E
EW REP TATIVE D e
(5) CAPITAL ROJECTS MANAGER Date
Change Orders over,,N5,000 require a Contract Cover Sheet and the following signatures:
CITY F LUBBOCKL / ATTES
j/ 9/28/2017 9/28/2017
(7) MAYOR Date (8) CIT ETARY Date
Council Date: September 28, 2017 Agenda Item #: 6. Resolution 2017-RO346
PWC-045 (Rev 01/08)
, c , " C. -a
Engineers... Working Wonders With Water®
August 16, 2017
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
1625 13th Street
Lubbock, TX 79457
Subject: Southeast Water Reclamation Plant Solids Handling Improvements Project
Change Order #3
Dear Mr. Fekete:
Attached with this letter is documentation for Change Order #3.
Item
Description
Cost Impact
Time Impact
Contractor's
Request
Recommended
by Engineer
1
Construct sidewalk on N end of Solids Handling Bldg (SHB) odor control
+$2,944
+1 day
+1 day
2
Construct paved access road on west side of SHB
+$33,595
+5 days
+5 days
3
Construct cake loading emergency pad on east side of SHB
+$16,591
+5 days
+5 days
4
Install new MH on the dewatering centrate line
+$20,316
+7 days
+7 days
5
Replace cake hopper gate actuators to increase gate closing speed
+$98,594
+5 days
+5 days
6
Construct retaining wall, slab, and stairs at SHT 6 & 7
+$15,568
+3 days
+3 days
7
Reconstruct collapsing valve vault walls at SHT 6 & 7
+$9,235
+3 days
+3 days
8
Install conduit and wire for additional lighting
+$68,446
+3 days
+3 days
9
Remove additional concrete paving east of SHB
+$22,105
No Time
No Time
10
Replacement of deteriorated wall penetrations in SHT 7
+$5,188
No Time
No Time
11
Additional WAS and NPW pipe supports in SHB
+$25,422
No Time
No Time
12
Pumping and removal of 20-inch duckbill check valve
+$11,853
+3 days
+3 days
13
Installation of additional suspension belt anchors
+$29,234
+3 days
+3 days
14
Additional drainage structures, and condensate line routing per RFI #3
+$21,278
No Time
No Time
15
Installation of an air relief valve in the centrate line
+$22,791
+5 days
+5 days
16
Rerouting plumbing vent lines in SHB to avoid 42-in ventilation duct
+$6,527
No Time
No Time
17
Demo of additional CMU block wall for duct installation
+$3,559
No Time
No Time
18
Add containment wall, handrail, and stairs in polymer room
+$15,527
No Time
No Time
19
Install additional plug valves on the WAS lines at the RDTs
+$2,593
No Time
No Time
20
Replace corroded 8-in sludge suction line in SHT 6
+$6,457
No Time
No Time
21
Repair top of SHT 6 for installation of the membrane cover
+$11,873
+2 days
+2 days
22
Additional polymer load to receive discounted price
+$1,229
No Time
No Time
+$450,925
+45 days
8900A.30IFekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 2
Items recommended for inclusion with Change Order #3 are described in more detail as follows:
Item 1
Archer Western has proposed $2,944 and one additional day for work and materials required to
construct a new sidewalk on north end of SHB Odor Control between the odor control area wall
and Administration Building parking as requested by the Engineer through PCM #26. The
Engineer and RPR have reviewed the proposal, and have found the cost and effort to be in line
with what would be expected given the small quantity of concrete involved (6 cu yd). Please
note that an element of the associated PCM that would have extended the SHB Odor Control
wall to the northwest corner of the SHB was eliminated from this item due to the high cost
quoted by the masonry subcontractor.
The following documents are attached to support Item 1:
Potential Contract Modification (PCM) #26.1 dated April 5, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #26.3 Proposal dated August 11, 2017 from Curtis Weston of Archer Western with
the cost backup for the additional work.
Item 2
Archer Western has proposed $33,595 and five additional days for work and materials required
to construct a new access road from the main plant access road to the west side of the Solids
Handling Building (SHB), serving the new transformers and rollup door as requested by the
Engineer through PCM #26. The Engineer and RPR have reviewed the proposal, and have
found the cost and effort to be in line with what would be expected given the small quantity of
concrete involved (65 cu yd).
The following documents are attached to support Item 2:
Potential Contract Modification (PCM) #26.1 dated April 5, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #26.3 Proposal dated August 11, 2017 from Curtis Weston of Archer Western with
the cost backup for the additional work.
Item 3
Archer Western has proposed $16,591 and five additional days for work and materials required
to construct an emergency cake loading pad allowing for loading of sludge trucks from the
horizontal cake conveyor using a front-end loader. This is a different emergency loading
approach than assumed during design, in which a roll -off bin was to be placed at the end of the
conveyor. The Engineer and RPR have reviewed the proposal, and have found the cost and
effort to be in line with what would be expected for the small quantity of concrete involved (13 cu
yd), and the complexity of the installation.
8900A.30 I Fekete003.doa
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 3
The following documents are attached to support Item 3:
Potential Contract Modification (PCM) #26.1 dated April 5, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #26.3 Proposal dated August 11, 2017 from Curtis Weston of Archer Western with
the cost backup for the additional work.
Item 4
The Engineer requested with PCM #27 that Archer Western submit a proposal for replacement
of an existing 12" diameter 45 degree bend fitting, and a 12" by 20" reducer fitting on the
Centrate line near the Solids Handling Building with a new 60" diameter concrete manhole
similar to the other two manholes installed on the Centrate line. The purpose of this new
manhole was to allow the piping from the building to the manhole to be easily isolated for
maintenance of the line due to buildup of Struvite that has been experienced in the existing 12"
line section. A manhole was not originally included at this location due to the proximity of the
centrate line to the Solids Handling Building. This work was done on an emergency basis, as
the Centrate line had become unusable due to blockage with Struvite near the Solids Handling
Building. Archer Western is requesting $20,316 and an additional seven days be added to the
Contract for purchase and installation of the manhole. The Engineer and RPR have reviewed
the proposal, and have found the cost and effort to be in line with what would be expected for
this unforeseen condition.
The following documents are attached to support Item 4:
Potential Contract Modification (PCM) #27 dated January 11, 2017 from Jason Anderson
of Carollo Engineers with the Engineer's request for proposal.
2. PCM #27.2 Proposal dated July 12, 2017 from Curtis Weston of Archer Western with the
cost backup for the additional work.
Item 5
The Engineer requested with PCM #28 that Archer Western submit a proposal for procurement
and installation of the equipment required to improve the closing speed of the three Cake
Hopper slide gates to a closing time of between 20 seconds and 30 seconds utilizing a
replacement Rotork actuator, and replacement gate stem. This concept was discussed with the
Contractor in a conference call on January 10, 2017, and has been discussed with the City at
several construction meetings.
The Rotork actuators originally installed were provided per specification, and are similar to
actuators used successfully by the Engineer on other projects with cake loading facilities. The
cake hopper capacity is approximately 90 cubic yards, and is sized to allow storage of
dewatered sludge through a 3-day weekend without needing to haul to disposal. The side
slopes to the three outlet gates are very steep to prevent cake from sticking to the sides and
preventing full emptying of the hopper, a problem common to other facilities. Each outlet
8900A.30 1 Fekete003.do
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 4
features an active bottom with two rotating screws to prevent bridging of solids in the opening,
and a slide gate.
The combination of the dryness of cake achieved by the new dewatering centrifuges and the
steepness of the side slopes of the hopper result in an unusually fast transport of cake from
hopper to hauling trailer, even if the active bottom screws are not turning. The actuator shaft of
the center hopper gate was replaced with a shaft with the coarsest thread available to increase
closing speed to 90 seconds, and while a significant improvement, and one that has allowed the
cake loading facility to be used for more than a year, this speed was still found to be too slow as
to provide the ease desired by plant staff to completely fill a trailer using all three gates. The
Engineer worked extensively with the hopper manufacturer, Custom Conveyor Corporation, to
arrive at the best solution. After investigating the application of a variety of alternative actuators,
some allowing closing in as little as 5 seconds but at a cost of $100,000 per actuator, Custom
Conveyor recommended a replacement Rotork actuator identical in configuration to the existing
actuators, but with much faster travel. Installation of these new actuators will not require
modification of the related electrical systems. Installation does require replacement of the gate
shaft on all three gates.
Archer Western received a quote from Custom Conveyor of $64,960 for three new Rotork
actuators with stems ($21,653.33 per actuator). The new actuators will result in a closing time of
20 seconds or less, which is expected to be adequate time to close gates without overfilling the
receiving trailer, and to allow use of all three gates to avoid the need to re -position the cake
truck as has been necessary when using the center gate alone. The total cost of the proposal,
including the trial center stem and nut, removal of the original actuators, and installation of the
new actuators is $98,594, with five additional days requested. The Engineer and RPR have
reviewed the proposal, and have found the cost and effort to be in line with what would be
expected.
The following documents are attached to support Item 5:
1. Potential Contract Modification (PCM) #28 dated February 13, 2017 from Jason
Anderson of Carollo Engineers with the Engineer's request for proposal.
2. PCM #28.2 Proposal dated July 12, 2017 from Curtis Weston of Archer Western with the
cost backup for the additional work.
Item 6
The Engineer requested with PCM #29 that Archer Western submit a proposal for construction
of a new retaining wall, slab, and aluminum stair in front of the Sludge Holding Tank 6 and 7
control room doors. The existing grading around the control room is such that mud slides down
and builds up against the double doors to the room, blocking required access to and from the
room, and creating a safety concern. The Contractor was requested to prepare a proposal to
construct a new retaining wall and slab at the doors to prevent mud from impeding access to the
room. The drawings and details attached to the PCM suggested application of the retaining wall
detail used for Sludge Holding Tank 7, with aluminum stairs provided similar to that provided for
access in the Polymer Room under PCM #41. Archer Western proposes $15,568 and three
8900A.30 1 Fekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 5
additional days for this work. The Engineer and RPR have reviewed the proposal, and have
found the cost and effort to be in line with what would be expected given the small quantity of
materials, and complexity of the installation.
The following documents are attached to support Item 6:
1. Potential Contract Modification (PCM) #29 dated March 3, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #29.2 Proposal dated July 12, 2017 from Curtis Weston of Archer Western with the
cost backup for the additional work.
Item 7
The Engineer requested with PCM #30 that Archer Western submit a proposal for replacement
of the Sludge Holding Tank 6 and 7 inlet valve vault. The existing valve vault walls were
constructed with CMU block, and the grout is failing causing the walls to collapse. The condition
of the walls presents a serious safety concern, and collapse could result in damage to the
valves within the vault. The Contractor proposes to use the CMU walls as a form against which
to pour new concrete walls. The grating on the top will be re -installed on the new walls. Archer
Western proposes $9,235 and three additional days for this work. The Engineer and RPR have
reviewed the proposal, and have found the cost and effort to be in line with what would be
expected given the small quantity of concrete, and limited access for installation.
The following documents are attached to support Item 7:
1. Potential Contract Modification (PCM) #30 dated March 3, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #30.2 Proposal dated July 12, 2017 from Curtis Weston of Archer Western with the
cost backup for the additional work.
Item 8
Archer Western has proposed $68,446 and three additional days for work and materials
required to construct the following additional project elements as requested by the Engineer
through PCM #31: Installation of additional conduit and wire to allow the City to install LED lights
in the locations indicated in the attached markups of the Conformed Drawings. The City has the
lights and would perform installation of the lights. The proposal is for the Contractor's electrical
subcontractor to run the required conduit and wire. The Engineer and RPR have reviewed the
proposal, and have found the cost and effort to be in line with what would be expected given the
length of PVC -coated conduit and wire required.
The following documents are attached to support Item 8:
1. Potential Contract Modification (PCM) #31 dated March 3, 2017, and PCM #31.2 from
Jason Anderson of Carollo Engineers with the Engineer's request for proposal.
8900A.30IFekete003.dou
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 6
2. PCM #31.3 Proposal dated August 11, 2017 from Curtis Weston of Archer Western with
the cost backup for the additional work.
Item 9
Archer Western has proposed $22,105 and no additional days for work and materials required
to construct the following additional project elements as requested by the City through PCM
#32: Removal of additional concrete paving near the Maintenance Building and replacement
with paving similar to the new paving adjacent. The Engineer and RPR have reviewed the
proposal, and have found the cost and effort to be in line with what would be expected.
The following documents are attached to support Item 9:
1. Potential Contract Modification (PCM) #32 dated March 6, 2017 from Jason Anderson of
Carollo Engineers with the Engineer's request for proposal.
2. PCM #32.2 Proposal dated July 12, 2017 from Curtis Weston of Archer Western with the
cost backup for the additional work.
Item 10
Archer Western is requesting $5,188 for additional work and materials needed to install wall
plates and make piping modifications to Sludge Holding Tank 7 due to the level of corrosion
found on several existing pipes at the wall penetrations. Cost includes $1,990 for providing and
installing three stainless steel wall plates, $1,050 for additional structural repair and demolition,
$700 for ductile iron pipe modifications, the Contractor's labor burden at $719, and small tools at
$124 for a total direct cost of $4,333. Overhead and profit, subsistence, and insurance and
bonds total $855. The Engineer and RPR have reviewed the request, and have found the cost
and effort to be in line with what would be expected for these unforeseen conditions.
The following documents are attached to support Item 10:
1. Potential Contract Modification (PCM) #33 dated May 19, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #33 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 11
Archer Western is requesting $25,422 and no additional days for additional waste activated
sludge (WAS) and non -potable water (NPW) pipe supports in the Solids Handling Building.
Supports were shown on the Drawings, but the Typical Details called out were less robust than
required for the pipe sizes being supported. Archer Western applied another available pipe
support Typical Detail. Cost includes 93 hours of labor for $2,400, additional pipe support
material at $16,530, additional welding at $720, the Contractor's labor burden at $1,392, small
tools at $240, and subcontractor profit at $36 for a total direct cost of $21,318. Overhead and
8900A.30IFekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 7
profit, subsistence, and insurance and bonds total $4,104. The Engineer and RPR have
reviewed the request, and have found the cost and effort to be in line with what would be
expected.
The following documents are attached to support Item 11:
1. Potential Contract Modification (PCM) #34 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #34 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 12
Archer Western is requesting $11,853 and three additional days for removal of the 20-inch
diameter duckbill valve in the centrate tank to enhance centrate flow from the centrifuges.
Removal of this valve was necessitated by the requirement to route the new Centrate line over a
54-inch influent sewer line that was found to be installed at a much higher elevation than
available record drawing information suggested. The Contractor and RPR chose to go over the
sewer line to avoid damage to the line, and because other existing piping would make it difficult,
if not impossible, to go under the line. Going over the 54-inch line resulted in a high point where
the Centrate line was intended to slope downward from its beginning at the Solids Handling
Building to the Centrate Equalization Basin. Removal of the check valve required the use of a
crane for removal of sections of the basin cover and the valve itself, and required the basin to
be pumped down. Cost includes 158 hours of labor for $4,140, diesel fuel, and equipment at
$2,650, the Contractor's labor burden at $2,401, and small tools at $414 for a total direct cost of
$9,605. Overhead and profit, subsistence, and insurance and bonds total $2,248. The Engineer
and RPR have reviewed the request, and have found the cost and effort to be in line with what
would be expected for these unforeseen conditions.
The following documents are attached to support Item 12:
1. Potential Contract Modification (PCM) #35 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #35 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 13
Membrane covers have been installed as replacements for the original failed steel floating
covers on Sludge Holding Tanks 6 and 7. Membrane covers were selected based on the
structural limitations of the existing tank walls. Archer Western is requesting $29,234 and three
additional days for materials and labor required to install additional membrane cover support
straps. The support straps prevent the inner gas holder cover from reaching the liquid surface if
there is no gas pressure in the tank. Archer Western assumed there would be 28 horizontal
anchors per cover for the support straps based on the information provided by the membrane
8900A.30 1 Fekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 8
cover manufacturer. Upon delivery of the materials for installation it was found that there were
384 horizontal anchors per tank, or over 13 times as many anchors. There was no
documentation from the membrane manufacturer TECON at any point in the submittal process
to indicate there would be this many anchors to drill and set. Cost includes 683 hours of labor
for $13,660, the Contractor's labor burden at $7,923, and small tools at $1,366 for a total direct
cost of $22,949. Overhead and profit, subsistence, and insurance and bonds total $6,285. The
Engineer and RPR have reviewed the request, and have found the cost and effort to be in line
with what would be expected for these unforeseen conditions.
The following documents are attached to support Item 13:
1. Potential Contract Modification (PCM) #36 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #36 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 14
Archer Western is requesting $21,278 and no additional days for materials and labor required to
provide extra work for paving modifications, including an extra area inlet to further improve
stormwater drainage, a temporary road, additional demolition, and additional protective pipe
bollards. This cost also includes extension of the odor control condensate drain per RFI #3.
Cost includes 203 hours of labor for $4,300, an area inlet at $1,300, pipe and fittings at $1,057,
seven pipe bollards at $2,100, concrete at $2,000, extra road base at $1,400, equipment at
$2,750, the Contractor's labor burden at $2,494, and small tools at $430 for a total direct cost of
$17,831. Overhead and profit, subsistence, and insurance and bonds total $3,447. The
Engineer and RPR have reviewed the request, and have found the cost and effort to be in line
with what would be expected.
The following documents are attached to support Item 14:
Potential Contract Modification (PCM) #37 dated May 19, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #37 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
3. RFI #3 dated April 29, 2014 from Jason Buoy of Archer Western.
4. RFI #3.1 Response from Khalil Kairouz of Carollo Engineers with the Engineer's
response to the RFI.
Item 15
Archer Western is requesting $22,791 and five additional days for materials and labor required
to installation of an air relief valve on the Centrate line. Installation of this valve was
8900A.30 I Fekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 9
necessitated by the requirement to route the new Centrate line over a 54-inch influent sewer line
that was found to be installed at a much higher elevation than available record drawing
information suggested. The Contractor and RPR chose to go over the sewer line to avoid
damage to the line, and because other existing piping would make it difficult, if not impossible,
to go under the line. Going over the 54-inch line resulted in a high point where the Centrate line
was intended to slope downward from its beginning at the Solids Handling Building to the
Centrate Equalization Basin. Without an air relief valve the line could become air bound,
reducing the capacity of the line. Cost includes 232 hours of labor for $6,686, material at $2,383
(including the air relief valve at $1,430), equipment at $4,452, pumping at $640, the Contractor's
labor burden at $3,878, small tools at $669, and subcontractor profit at $32 for a total direct cost
of $18,740. Overhead and profit, subsistence, and insurance and bonds total $4,051. The
Engineer and RPR have reviewed the request, and have found the cost and effort to be in line
with what would be expected for these unforeseen conditions.
The following documents are attached to support Item 15:
1. Potential Contract Modification (PCM) #38 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #38 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 16
Archer Western is requesting $6,527 and no additional days for materials and labor required to
reroute plumbing vent lines around the 42-inch duct on the north wall of the Solids Handling
Building. This approach was less costly than modifying the duct work to allow for the original
pluming vent line route. Cost includes 90 hours of labor for $2,340, material at $350, equipment
at $1,000, the Contractor's labor burden at $1,357, and small tools at $234 for a total direct cost
of $5,281. Overhead and profit, subsistence, and insurance and bonds total $1,246. The
Engineer and RPR have reviewed the request, and have found the cost and effort to be in line
with what would be expected for these unforeseen conditions.
The following documents are attached to support Item 16:
1. Potential Contract Modification (PCM) #39 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #39 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 17
Archer Western is requesting $3,559 and no additional days for labor related to additional
demolition of a CMU block wall required for installation of new foul air ductwork in the Solids
Handling Building. Cost includes 65 hours of labor for $1,630, equipment at $100, the
Contractor's labor burden at $945, and small tools at $163 for a total direct cost of $2,838.
8900A.30IFekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 10
Overhead and profit, subsistence, and insurance and bonds total $721. The Engineer and RPR
have reviewed the request, and have found the cost and effort to be in line with what would be
expected for these unforeseen conditions.
The following documents are attached to support Item 17:
1. Potential Contract Modification (PCM) #40 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #40 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 18
Archer Western is requesting $15,527 and no additional days for labor related to the addition of
a short containment wall, handrail, and stairs in the Solids Handling Building. This addition
provides an additional access point to the polymer storage and feed area. Cost includes 180
hours of labor for $4,950, concrete -related materials at $950, handrail and stairs at $3,385, the
Contractor's labor burden at $2,871, and small tools at $495 for a total direct cost of $12,651.
Overhead and profit, subsistence, and insurance and bonds total $2,876. The Engineer and
RPR have reviewed the request, and have found the cost and effort to be in line with what
would be expected.
The following documents are attached to support Item 18:
Potential Contract Modification (PCM) #41 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #41 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 19
Archer Western is requesting $2,593 and no additional days for labor related to providing and
installing additional eccentric plug valves on the waste activated sludge (WAS) piping to the
rotary drum thickeners (RDTs) in the Solids Handling Building. Although the valves provided per
the design were adequate, the additional valves eased construction sequencing, allowed further
isolation of the RDTs during performance testing, and will give City staff more flexibility in
operation and maintenance in the future. Cost includes 3 hours of labor for $69, valves at
$2,064, the Contractor's labor burden at $40, and small tools at $7 for a total direct cost of
$2,180. Overhead and profit, subsistence, and insurance and bonds total $413. The Engineer
and RPR have reviewed the request, and have found the cost and effort to be in line with what
would be expected.
The following documents are attached to support Item 19:
8900A.30 I Fekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 11
1. Potential Contract Modification (PCM) #42 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #42 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 20
Archer Western is requesting $6,457 and no additional days for labor related to providing and
installing a new 8 inch digested sludge suction pipe in Sludge Holding Tank 6. The original line
was intended to be reused, but upon draining and cleaning it was determined by the Engineer
that given the condition of the existing pipe it would be best in the long term to replace this line.
With this replacement, both the sludge pump suction lines and the recirculation pump discharge
piping is all new. It should also be noted that the 8 inch digested sludge suction line in Sludge
Holding Tank 7 was replaced after the tilted cover knocked the pipe down. Cost includes 34
hours of labor for $782, ductile iron pipe and fittings at $3,550, equipment at $500, the
Contractor's labor burden at $454, and small tools at $78 for a total direct cost of $5,364.
Overhead and profit, subsistence, and insurance and bonds total $1,093. The Engineer and
RPR have reviewed the request, and have found the cost and effort to be in line with what
would be expected.
The following documents are attached to support Item 20:
1. Potential Contract Modification (PCM) #43 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #43 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 21
Archer Western is requesting $11,873 and two additional days for labor related to repairing and
leveling the top of the wall on Sludge Holding Tank 6. This tank differed from Tank 7 in terms of
the top elevation of the wall, with the elevation being significantly higher along the
circumference of the tank wall at the control room. Installation of the membrane cover requires
the top of the wall to be close to the same at all points along the circumference of the tank,
necessitating repair and leveling. Cost includes 189 hours of labor for $4,347, repair materials at
$2,228, the Contractor's labor burden at $2,521, and small tools at $435 for a total direct cost of
$9,531. Overhead and profit, subsistence, and insurance and bonds total $2,342. The Engineer
and RPR have reviewed the request, and have found the cost and effort to be in line with what
would be expected.
The following documents are attached to support Item 21:
1. Potential Contract Modification (PCM) #44 dated July 12, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
8900A.301 Fekete003.d(>cx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 12
2. PCM #44 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
Item 22
The original Contract had Bid Item 6 in the amount of $150,000 for the Contractor to purchase
dewatering polymer necessary for operation of the new dewatering centrifuges, and Bid Item 7
in the amount of $50,000 for purchase of thickening polymer necessary for operation of the new
rotary drum thickeners. In the course of starting and operating the centrifuges to date,
dewatering polymer has been purchased by the Contractor on the City's behalf totaling
$221,431.60 (overrun of $71,431.60). Dewatering polymer purchases have totaled $47,398.40
($2,601.60 remaining). The City would like to purchase one more load of polymer through the
Contractor, as the price the Contractor is getting is actually lower than the price negotiated by
the City, and there is no markup on polymer. This additional load is priced at $44,000.
The Contractor has identified unused budget from other bid items that can be applied to this last
purchase and the previous polymer cost overruns. There is $50,000 remaining unused from Bid
Item 8 - Belt Press and GBT Repairs, both of which are now replaced by the new centrifuges
and rotary drum thickeners, and therefore this amount will not be used for the original purpose.
There is also $61,601 remaining from the original $75,000 budgeted for Bid Item 3 - Sludge
Holding Tank Crack Injection. All tank repairs have been made so the remainder will not be
used for the original purpose.
PCM #46 seeks to re -assign the remaining $61,601 from Bid Item 3, $2,601.60 from Bid Item 7,
and $50,000 from Bid Item 8 for a combined amount of $114,202.60 to cover the dewatering
polymer overrun and the additional polymer load that total $115,431.60.
With budgets re -assigned as requested, Archer Western is proposing $1,229 and no additional
days for the additional polymer load.
The following documents are attached to support Item 22:
1. Potential Contract Modification (PCM) #46 dated August 14, 2017 from Curtis Weston of
Archer Western with cost backup for the additional work.
2. PCM #46 Response from Jason Anderson of Carollo Engineers with the Engineer's
response to the proposal.
8900A.30 I Fekete003.docx
Mr. Zoltan Fekete, P.E.
Senior Engineer
City of Lubbock, Texas
August 16, 2017
Page 13
The change in contract price associated with items 1 through 22 is summarized below
• Original contract price : $33,556,000
• Net increase in price of this change order: +$450,925
• Contract price with all approved change orders: $34,329,438 (+2.3%)
• Original contract time: 1,186 Days to Final Completion
• Net increase of time with this change order: +45 days (Phase 2)
• Contract time with all approved change orders: 1,296 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.
Hani E. Michel, P.E.
Project Manager
JEA:jea
cc: John Turpin, P.E.
Mary Gonzales
Gary Wheelwright
Billy Stephens
Jason Anderson, P.E.
8900A.30 1 Fekete003
CERTIFICATE OF INTERESTED PARTIES
FORM 1295
lofl
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:
2017-263173
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
Archer Western Construction, LLC
Irving, TX United States
Date Filed:
09/20/2017
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 Water Utilities ]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.
116"
Construction services for Change Order No. 2 of the SEWRP Solids Handling Improvements Project
4
Name of Interested Party
City, State, Country (place of business)
Nature of interest
(check applicable)
Controlling I
Intermediary
5
Check only if there is NO Interested Party. X
6
AFFIDAVrf I swear, or affirm, under penalty of perjury, that the above disclosure is true and correct.
KECk�F�
�.�pRY PUe•.•• �� ` .
` Signature of authorized agent of contracting business entity
••:,�9OF t�P•,•'•
AFFIX NOTARY S1 1P I �Sxc1310
GU1 � [ h� h J
beforeN{ e, by �� t} e 1 � Ir �►� S DV y T .
Sworn to and subscribed before me, b the said � ,this the — day of ,
20��_, to certify which, witness my hand and seal of office.
eA - 1,—,e': /
Signature of o icer administering oath Printed name of o icer administering oath Title of officer administering oath
Forms provided by Texas Ethics Commission www.ethics.state.tx.us Version V1.0.3337
CERTIFICATE OF INTERESTED PARTIES
FORM 1295
1of1
Complete Nos. 1- 4 and 6 if there are interested parties.
Complete Nos. 1, 2, 3, 5, and 6 if there are no interested parties.
OFFICE USE ONLY
CERTIFICATION OF FILING
Certificate Number:
2017-263173
Date Filed:
09/20/2017
Date Acknowledged:
09/21/2017
1
Name of business entity filing form, and the city, state and country of the business entity's place
of business.
Archer Western Construction, LLC
Irving, TX United States
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 Water Utilities
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.
11644
Construction services for Change Order No. 2 of the SEWRP Solids Handling Improvements Project
4
Name of Interested Party
City, State, Country (place of business)
Nature of interest
(check applicable)
Controlling I
Intermediary
5
Check only if there is NO Interested Party.
X
6
AFFIDAVIT I swear, or affirm, under penalty of perjury, that the above disclosure is true and correct.
Signature of authorized agent of contracting business entity
AFFIX NOTARY STAMP / SEAL ABOVE
Sworn to and subscribed before me, by the said this the day of
20 , to certify which, witness my hand and seal of office.
Signature of officer administering oath Printed name of officer administering oath Title of officer administering oath
Forms provided by Texas Ethics Commission www.ethics.state.tx.us Version V1.0.3337