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City of Nashua

Purchasing Department
Administrative Services Division (603) 589-3330
229 Main Street - Nashua, NH 03060 Fax (603) 594-3233

August 11, 2021
Memo #22-158

TO: Mayor Donchess
Finance Committee

SUBJECT: Energy Recovery Upgrades Change Order in the amount not to exceed $230,000 funded
from accounts 81300 Machinery & Equipment

Please see attached communications from David Boucher, Superintendent of the Wastewater Department,
dated July 22, 2021 for project specific details related to this purchase. Below please find a summary of
the purchase approval request:

Item: Change Order #8 for Upgrade of the Energy Recovery Room Project to reconcile
claimed delays for relocating buried electric conduits & providing pipe supports
and complete remaining open change order items.

Value: Initial Approved Total: $1,787,378.00
Change Orders 1-7: S 144,792.27
Change Order 8: S$ 230,000.00
New Project Total: $1,932,170.27
Vendor: Methuen Construction

Department: 169 Wastewater
Source Fund: 54210 Lead Hazzard Remediation

Ordinance: Pursuant to § 5-84 Special purchase procedures. A/ (5) Purchases from a sole
manufacturer, where it is determined to be more efficient and economical to
reduce costs of maintenance of additional repair parts, supplies or services.

The Board of Public Works (7/22/21 BPW meeting), Division of Public Works: Wastewater, and the
Purchasing Department respectfully request your approval of this contract.

Regards,
Kelly Parkinson

Purchasing Manager

Ce: D Boucher
C O'Connor

To:

From:

Re:

E. Motion:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: July 22, 2021

David L. Boucher, Superintendent
Wastewater Department

Energy Recovery Upgrade — Methuen Construction Change Order #8

To approve Change Order #8 to the Energy Recovery Upgrade contract with Methuen
Construction Company of Plaistow, NH in an amount not to exceed $230,000 for final
completion of remaining work for upgrades to the Energy Recovery Facility. Funding
will be through: Department: 169- Wastewater; Fund: Wastewater; Activity: Energy
Recovery Upgrade Project.

The energy recovery upgrade project involves upgrading all the major components in the
energy recovery room with new generators, piping, heat exchangers, pumps, controls and
associated electrical components. The contract with Methuen Construction was originally
in the amount of $1,787,378. Change order | thru 7 were for various changes that
occurred during construction typically due to unknown conditions. The total of CO’s 1-7
comes to $144,792.27 bringing the total contract value to $1,932,170.27.

Change order 8 consists of 2 main items. First is to reach final agreement on claimed
delays encountered earlier in the project, one for relocating buried electric conduits in the
concrete floor and the second for delays in determining how to provide pipe supports in
the concrete slab ceiling. The second main item is for costs to complete the remaining
work change order items.

Approval of change order 8 will resolve all outstanding contract items.

B-6.1

CHANGE ORDER

No. 008

PROJECT: Energy Recovery Upgrade
OWNER: City of Nashua, NH

(Address)

DATE OF ISSUANCE:

CONTRACTOR: Methuen Construction Co., Inc OWNER’s Project No. 1FB0501-091618

CONTRACT FOR: Energy Recovery Upgrade ENGINEER waldron Engineering & Construction, Inc.
at Nashua NH Wastewater Treatment ENGINEER’s Project No. 359.01

9/2,

You are directed to make the following changes in the Contract Documents.

Description; (See attached)

Purpose of Change Order: (See Attached)

Justification: (See Attached)

Attachments: (List documents supporting change) (Summary+PCO-18R1,22R1,26, 29R1)

CHANGE IN CONTRACT PRICE

Original Contract Price
$ 1,787,378.00

CHANGE IN CONTRACT TIME

Original Contract Time

280 (final completion)
(days or date)

Previous Change Orders
3 144,792.27

Net change from previous Change Orders

31
(days)

Contract Price prior to this Change Order
$ 193217027

Contract Time prior to this Change Order

311 (final completion)
(days or date)

Net Increase (Decrease) of this Change Order
$ 200,000.00

Net Increase (decrease) this Change Order

649
(days)

Contract Price with all approved Change Orders
$ 2.132.170.27

Contract Time with all Change Orders

960 (final completion)
(days or date}

This document will become a supplement to the CONTRACT and all provisions will apply hereto. The
attached Contractor’s Revised Project Schedule reflects increases or decreases in Contract Time as
authorized by this Change Order.

Stipulated price and time adjustment includes all costs and time associated with the above described change.

Contractor waives all rights for additional time extension for said change. Contractor and Owner agree that
the price(s) and time adjustment(s) stated above are equitable and acceptable to both parties.

RECOMMENDED: APPROVED: APPROVED: APPROVED:
By: Quremy emt _ BY: By: 4esee> By:
0 Eggineer Owner Contractor NHDES
7/30/21 8/2/21

Date Date Date Date

City of Nashua
Energy Recovery Upgrades

CHANGE ORDER 8 —- SUMMARY

Change Order 8 is composed of the following items:

1. Lump sum amount of $200,000, which includes:

a. *Compensation for down time experienced during resolution of method to proceed
for supporting generator no. 1, and all other miscellaneous delays.

b. PCO (Proposed Change Order) 18R1- fuel blending skid relocation in the amount of
$17,918.01 (this work is complete),

c. PCO22R1-Piping relocation for generators in the amount of $1,273.56 (this work is
complete).

d. PCO26-Natural Gas Testing in the amount of $6,715.96 (this work is complete).

e. PCO29R1-SCADA HMI Interface-installed SCADA on PLC in generator room in the
amount of $8344.88 (this work is complete).
(Copies of PCO18R1, 22R1, 26 and 29R1 are attached)

*Note that as part of this agreement and compensation sum Methuen will not seek any further
delay charges against the City and in return the City will not seek compensation in the form of
liquidated damages. Methuen further agrees to complete the remaining work as quickly as
possible; a final date of completion has been set, but will be further amended, if needed, due to
circumstances beyond Methuen’s control.

Methuen PCO #018

t
CONSTRUCTION

(=)

Methuen Construction Co., Inc. Project: 181012 - Nashua Energy Recovery Upgrade
144 Main Street - PO Box 980 2 Sawmill Rd.
Plaistow, New Hampshire 03865 Nashua, New Hampshire 03060

Phone: (603) 328-2222

Prime Contract Potential Change Order #018: Fuel Blending Skid

Relocation
TO: City of Nashua FROM: Methuen Construction Co., Inc.
229 Main Street 144 Main Street PO Box 980
Nashua New Hampshire, 03060 Plaistow New Hampshire, 03865
PCO NUMBERIREVISION: 018/1 CONTRACT: IFB0501-090618 NASHUA PO #146861 -
Nashua Energy Recovery Upgrade
REQUEST RECEIVED FROM: Jeremy Smith, P.E. (Waldron Engineering & CREATED BY: Kelly Jegorow (Methuen Construction Co.,
Construction, Inc.) Inc.)
STATUS: Pending - In Review CREATED DATE: 4/10 /2020
REFERENCE: DATE SENT: 10/19/2020
FIELD CHANGE: No PRIME CONTRACT None
CHANGE ORDER:
LOCATION: Fuel Blending Skid
SCHEDULE IMPACT: 20 days ACCOUNTING Amount Based
METHOD:
PAID IN FULL: No TOTAL AMOUNT: $17,918.01

Methuen Construction (MC), hereby submits this PCO in accordance with the documentation referenced herein. It is expressly understood and agreed
that this proposal is valid for the time as specified within this document from the date of the PCO. The Proposal is based upon current day construction
costs and does not include escalation costs for any material items that are either volatile or market sensitive. This Proposal does not include overtime
acceleration or expediting costs. This proposal does not include the costs associated with out of sequence construction, interference, impact related
delays and disruptions. MC reserves its rights under the agreement to seek additional time, indirect and impact costs associated with the PCO, once the
impacts can be fully evaluated. This proposal is submitted based on the understanding that it is exempt from WBE/MBE participation requirements and

acceptance of this proposal waives the participation requirements associated with this additional work.

POTENTIAL CHANGE ORDER TITLE: Fuel Blending Skid Relocation
CHANGE REASON: Client Request

POTENTIAL CHANGE ORDER DESCRIPTION: (The Contract Is Changed As Follows)
CE #042 - PCO 018 Fuel Blending Skid Relocation

Per RFI#21 the Owner requested the relocation of the fuel blending skid to maintain access to the digester. This relocation has caused in an increase
in costs related to this work. This proposal covers the additional labor and materials required for the relocation including added vent pipe length, added
biogas, natural gas and blended gas piping, additional hangers as well as custom supports for the skid. In addition, this relocation impacted the overall
project completion so we are requesting and additional 20 days be added to the contract completion date.

ATTACHMENTS:
PCO No 18- FBS Extra Work.pdf

Burden Rate

# Cost Code Description Type Amount Subtotal
‘pt yp 4 (43.00% Applies to Labor.) u

87-0306 -
1 ~ TLabor Labor $ 5,160.88 $2,210.14 $7,380.06
Fuel Train
22-0150 - subcontract
2 [PROCESS | subcontractor Labor ubconiract | § 12,078.23 $0.00 $12,078.23
PIPING or

Methuen Construction Co., Inc. page 1 of 2 Printed On: 10/19/2020 11 :59 AM

PCO #018

INSTALLATI
ON
22-0150 -
PROCESS Subcontract
3 | PIPING Labor or ($9,739.48) $ 0.00 ($9,739.48)
INSTALLATI
ON
22-0150 -
PROCESS
4 |PIPING Material Material $ 3,774.82 $ 0.00 $3,774.82
INSTALLATI
ON
87-0306 - . .
5 Fuel Train Equipment Equipment $ 952.00 $ 0.00 $952.00
01-0520 -
6 | PROJECT As-builts Material $ 160.00 $ 0.00 $160.00
ENGINEER
Subtotal:] $12,386.45 $2,219.18 $14,605.63
GC Work Total Fee - Labor: 15.00% Applies to Labor. $ 1,107.01
GC Work Total Fee - Material & Equipment: 15.00% Applies to Other, Material, and Equipment. $ 733.02
GC Subcontractors Work Fee: = 47.93% Applies to Subcontractor. $ 1,121.02
Bond & General Liability: 2.00% Applies to Other, Material, Committed Costs, Labor, Rental Equipment Relief, Equipment, Subcontractor, and Burden. $ 351.33
Grand Total: $17,918.01
Jeremy Smith, P.E. (Waldron Engineering City of Nashua Methuen Construction Co., Inc.
& Construction, Inc.)
37 Industrial Drive Suite G-1 229 Main Street 144 Main Street PO Box 980
Exeter, New Hampshire 03833 Nashua, New Hampshire 03060 Plaistow, New Hampshire 03865
SIGNATURE DATE SIGNATURE DATE SIGNATURE DATE

Methuen Construction Co., Inc.

page 2 of 2

Printed On: 10/19/2020 11:59 AM

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Fa

| 2

Methuen Construction Co., Inc.
144 Main Street - PO Box 980
Plaistow, New Hampshire 03865
Phone: (603) 328-2222

Methuen
CONSTRUCTION

PCO #022

Project: 181012 - Nashua Energy Recovery Upgrade

2 Sawmill Rd.
Nashua, New Hampshire 03060

Prime Contract Potential Change Order #022:
Generator Engines

PCO NUMBERIREVISION:

REQUEST RECEIVED FROM:

STATUS:
REFERENCE:

FIELD CHANGE:

LOCATION:
SCHEDULE IMPACT:

PAID IN FULL:

City of Nashua
229 Main Street
Nashua New Hampshire, 03060

022 / 1

Pending - In Review

No

0 days

No

FROM:

CONTRACT:

CREATED BY:

CREATED DATE:
DATE SENT:
PRIME CONTRACT
CHANGE ORDER:

ACCOUNTING
METHOD:

TOTAL AMOUNT:

Piping Relocation for

Methuen Construction Co., Inc.
144 Main Street PO Box 980
Plaistow New Hampshire, 03865

IFB0501-090618 NASHUA PO #146861 -
Nashua Energy Recovery Upgrade

Anthony Crespo (Methuen Construction Co.,
Inc.)

6/29 /2020
10/20/2020

None

Amount Based

$1,273.56

Methuen Construction (MC), hereby submits this PCO in accordance with the documentation referenced herein. It is expressly understood and agreed
that this proposal is valid for the time as specified within this document from the date of the PCO. The Proposal is based upon current day construction

costs and does not include escalation costs for any material items that are either volatile or market sensitive. This Proposal does not include overtime

acceleration or expediting costs. This proposal does not include the costs associated with out of sequence construction, interference, impact related

delays and disruptions. MC reserves its rights under the agreement to seek additional time, indirect and impact costs associated with the PCO, once the
impacts can be fully evaluated. This proposal is submitted based on the understanding that it is exempt from WBE/MBE participation requirements and

acceptance of this proposal waives the participation requirements associated with this additional work.

POTENTIAL CHANGE ORDER TITLE: Piping Relocation for Generator Engines

CHANGE REASON: No Change

Reason

POTENTIAL CHANGE ORDER DESCRIPTION: (The Contract Is Changed As Follows)

CE #052 - PCO 022- Pipe Relocation for Generators
Proposal has been revised to remove 1/2 of MCC labor costs and the request for an additional day of contract time.

ATTACHMENTS:

# Cost Code Description

Type Amount

Burden Rate
(43.00% Applies to Labor.)

Subtotal

22-0150 -
PROCESS
1 | PIPING
INSTALLATI
ON

LABOR

Labor $ 288.68

$124.13 $412.81

22-0150 -
PROCESS
2 | PIPING
INSTALLATI
ON

EQUIPMENT

Equipment $ 68.00

$ 0.00 $68.00

Methuen Construction Co., Inc.

page 1 of 2

Printed On: 10/20/ 2020 02:37 PM

PCO #022

22-0150 -
PROCESS Subcontract
3 | PIPING SUBCONTRACTOR or $ 640.00 $ 0.00 $640.00
INSTALLATI
ON
Subtotal: $996.68 $124.13 $1,120.81
GC Work Total Fee - Labor: 15.00% Applies to Labor. $61.92
GC Work Total Fee - Material & Equipment: 15.00% Applies to Other, Material, and Equipment. $10.20
GC Subcontractors Work Fee: = 8.7% Applies to Subcontractor. $55.65
Bond & General Liability: 2.00% Applies to Other, Material, Committed Costs, Labor, Rental Equipment Relief, Equipment, Subcontractor, and Burden. $ 24.98
Grand Total: $1,273.56

Jeremy Smith, P.E. (Waldron Engineering
& Construction, Inc.)

37 Industrial Drive Suite G-1
Exeter, New Hampshire 03833

City of Nashua

229 Main Street
Nashua, New Hampshire 03060

Methuen Construction Co., Inc.

144 Main Street PO Box 980
Plaistow, New Hampshire 03865

SIGNATURE DATE

Methuen Construction Co., Inc.

SIGNATURE DATE

page 2 of 2

SIGNATURE DATE

Printed On: 10/20/2020 02 :37 PM

PCO #026

Mathuen Consiruction Co., Inc. Project: 181012 - Nashua Energy Recovery Upgrade
144 Main Street - PO Box 980 2 Sawmill Rd.
Plaistow, New Hampshire 03865 Nashua, New Hampshire 03060

Phone: (603) 328-2222

Prime Contract Potential Change Order #026: Natural Gas Emission
Testing

TO: City of Nashua FROM: Methuen Construction Co., Inc.
229 Main Street 144 Main Street PO Box 980
Nashua New Hampshire, 03060 Plaistow New Hampshire, 03865
PCO NUMBERIREVISION: 0268/0 GONTRACT: 1FB0501-090618 NASHUA PO #146861 -
Nashua Energy Recovery Upgrade
REQUEST RECEIVED FROM: Michael Kellay (CK Environmental, inc.) CREATED BY: Anthony Crespo (Methuen Construction Co.,
Inc}
STATUS: Pending - In Review CREATED DATE: 5/26 /2020
REFERENCE: DATE SENT: 5/26/2020
FIELD CHANGE: No PRIME CONTRACT None
CHANGE ORDER:
LOCATION: Energy Recovering Building
SCHEDULE IMPACT: 2 days ~ ACCOUNTING Amount Based
METHOD:
PAID IN FULL: No TOTAL AMOUNT: $6,715.96

Methuen Construction (MC), hereby submits this PCO in accordance with the documentation referenced herein. It is expressly understood and agreed
that this proposal is valid for the ‘ime as specified within this document from the date of tne PCO, The Praposal is based upon current day construction
costs and does nol include escalation costs for any material items that are either volatile or market sensitive. This Proposal does not Include overtime
acceleration or expediting costs. This proposal does not include the costs associated with oul of sequence constructlon, interference, impact related
delays and disruptions. MC reserves its rights under the agreement to seek addilional time, indirect and impact costs associated with the PCO, once the
impacts can be fully evaluated. This proposal is submitted based on the understanding that It is exemp! from WBE/MBE pariicipation requirements and
acceptance of this proposal waives the participation requirements associated with this additional work.

POTENTIAL CHANGE ORBER TITLE: Natural Gas Emission Testing
CHANGE REASON: Client Request

POTENTIAL CHANGE ORDER DESCRIPTION: (The Contract Is Changed As Follows)
CE #049 - PCO 26- Natural Gas Emissia stin

Scope: Per RFI #63 and multiple site visits with NH DES, the DES has requested that we add a natural gas test to the overall emission testing protocol.
After further raview of the specs, it does not call out a test of 2 different gases on each engine, just blended gas. If the city would like to test on both gas
mixes (natural gas and blended gas) the added cost is broken out below. As a result of the extra day worlh of work, MC requests that 2 days is added to
the overall construction schedule, MG Labor includes sequencing from blended gas to natural gas throughout the duration of the emission test. See
attached CK Environemntal Breakdown. Please note we will not proceed with testing until the executive change order Is approved.

ATTACHMENTS:
PCO No 026- Natural Gas Emission Testing.pdf

Burdon Rato
# | Cost Code Description Type Amounl {43.00% Applies to Labor.) Subtetal

001-0002- | Labor assoclated with emission
1 | sien Time testing Labor § 1,091.84 $ 469,45) $1,561.33

Mathuen Construction Co.,, Inc. page 1of2 Printed On; 6/26/ 2020 09:42 AM

Board of Aldermen — 12/26/17 Page 4
A Viva Voce Roll Call was taken, which resulted as follows:
Yea: Alderman Wilshire, Alderman Clemons,
Alderman Tencza, Alderman Dowd, Alderman Caron,
Alderwoman Melizzi-Golja, Alderman O’Brien,
Alderman McCarthy 8
Nay: Alderman Cookson, Alderman LeBrun, Alderman Moriarty 3

MOTION CARRIED

From: David G. Fredette, Treasurer/Tax Collector
Re: Purchase Replacement for Two 2009 Ford F250 % Ton 4x4 Pick-Up Trucks with Plow
(Parks & Rec)

MOTION BY ALDERMAN WILSHIRE TO ACCEPT, PLACE ON FILE AND AUTHORIZE
THE PURCHASE OF THE VEHICLES IN THE AMOUNT OF $98,038.08

A Viva Voce Roll Call was taken, which resulted as follows:
Yea: Alderman Wilshire, Alderman Clemons, Alderman Tencza
Alderman Cookson, Alderman Dowd, Alderman Caron
Alderwoman Melizzi-Golja, Alderman LeBrun, Alderman Moriarty,
Alderman O’Brien, Alderman McCarthy 11
Nay: 0
MOTION CARRIED
PETITIONS — None
NOMINATIONS, APPOINTMENTS AND ELECTIONS — None
REPORTS OF COMMITTEE

Committee on Infrastructure........ cece cccceccccceccececeecuececceceecuceeeeeeeeseeeerautersteertnrensnters 12/13/2017

There being no objection, President McCarthy declared the report of the December 13, 2017,
Committee on Infrastructure accepted and placed on file.

Human Affairs COMMIttee. 2.0... ceeccececcccececccececeeeeeeeceueueseaueeeseateeeatereavavananavas 12/11/2017

There being no objection, President McCarthy declared the report of the December 11, 2017, Human Affairs
Committee accepted and placed on file.

WRITTEN REPORTS FROM LIAISONS — None
CONFIRMATION OF MAYOR'S APPOINTMENTS - None

UNFINISHED BUSINESS — RESOLUTIONS — None