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December 21, 2018 Page 2
20181221 2019 GCCS Services Scope.docx

Sanborn Head will provide two (2) paper copies of the above-listed documents to the City
and assumes that the City will prepare and submit the Type I] Permit Modification
Application to the New Hampshire Department of Environmental Services (NHDES}. Once
the project is approved by NHDES, Sanborn Head will be responsible for the following:

w Attending a pre-bid meeting at the Four Hills Landfill to review the project with potential
bidders;

a Providing responses to requests for information (RFIs) from potential bidders regarding
design intent, materials, and material testing; and

a Preparing addenda, if required.
Sanbom Head assumes that bid results will be tabulated by the City.

Task 2 - Construction Phase Services

Under this task, Sanborn Head will perform construction-phase engineering services in
support of the installation of the GCCS components depicted on the construction drawings
and technical specifications approved by NHDES. This effort will include:

s Preparing for and attending a pre-construction meeting at the Four Hills Landfill to
review the project and proposed construction timeline with the selected contractor. We
assume that the City will prepare the agenda and meeting minutes for this meeting.

s Reviewing contractor submittals for conformance with the specifications for the project.

x Providing proposed pipe alignments to the contractor for stake-out in the field by the
Contractor’s surveyor.

e Updating the well schedule for the project based on ground surface elevations recorded
by the contractor's surveyor at the time of construction.

x Performing limited construction observation services to document the installation of
‘critical GCCS components for conformance with the drawings and_ technical
specifications approved by the NHDES. We assume two site visits per week, with each
visit averaging about 4 hours, and a 6-week duration for the project (12 site visits total).
While on site, Sanborn Head’s representative will meet with representatives of the City
and the contractor, observe construction (including material testing performed by the
contractor), take photographs, and document the observations. We understand that a
representative of the City will observe construction activities and material testing when
Sanborn Head is not on site.

= Preparing bi-weekly construction summaries for the NHDES, Based on a projected 6-
week duration of construction, we anticipate preparing no more than three (3) bi-weekly
reports,

s Performing a final site walk-thru with the City to evaluate the completeness of the
contractor’s work and conformance with the construction documents, and if necessary,
generating a punch-list of items to be completed by the contractor prior to Sanborn Head
signing off on substantial completion of the project.

SANBORN I HEAD

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December 21, 2018 PageZ
20181221 2019 GCCS Services Scope.docx

Itis our understanding that as-built survey of the constructed components will be facilitated
by the contractor and provided to Sanborn Head in AutoCAD format (i.e., dwg).

Task 3 - CQA Report & Record Drawings Preparation
Following completion of construction, Sanborn Head will be responsible for the following:

» Preparing a Construction Quality Assurance (CQA)} Report for the project. The CQA
Report will address the construction activities observed by Sanborn Head and the City,
test results, and variations in construction relative to the drawings and specifications, if
any. The statements presented in the CQA Report will be limited to the extent of our
observations, our understanding of the City’s observations and documentation, and our
review of submittals and test results. The CQA Report will be signed and sealed by a
professional engineer licensed in the State of New Hampshire. Two paper copies and an
Adobe Acrobat (ie., .pdf} electronic copy of the report will be issued to the City.

# Preparing Record Drawings for the Project. The Record Drawings will be based on as-
built documentation and survey provided to Sanborn Head by the contractor. The Record
Drawings will be included as an attachment to the CQA report.

BUDGET ESTIMATE AND BASIS OF BILLINGS

The estimated budget for each task under this scope of services is provided in the table below
and is based on the estimated time commitment required to complete the services described
above in addition to expenses associated with printing, mileage, and tolls. We will invoice
based on actual accrued time and expenses in accordance with the enclosed Schedule of Fees.
We will not perform services beyond those defined herein without first receiving written
authorization from the City.

«gs Estimated
Task Task Description Budget
1 Design & Bid Phase Services $9,700
2 Construction Phase Services $14,000
3 CQA Report & Record Drawings Preparation $5,000
SCHEDULE

Sanborn Head is available to begin working on this project following written authorization
to proceed from the City.

TERMS OF ENGAGEMENT

We understand that the City will issue a new Contract for Professional Services and a
Purchase Order to Sanborn Head for the scope of services and budget estimate described
herein.

Thank you for the opportunity to submit this scope of services. We look forward to working
with you on this project. Please contact us should you require additional information.

SANBORN i HEAD

December 21, 2018 Page 4
20181221 2019 GCCS Services Scope.docx

Very truly yours,
SANBORN, HEAD & ASSOCIATES, INC.

Ryan L. Clay, Pé. Eric S. Steinhauser, P.E., CPESC, CPSWQ
Project Manager Princtpal

RLC/ESS:rlc

Enclosed: Schedule of Fees

P:\3000s\3066.16\Project Control\2019 GCCS Services Proposal\20281221 2019 GCCS Services Scope.docs

SANBORN i HEAD

i

SANBORN ||, HEAD
f Building Trust. Engineer mg Success.
SANBORN, HEAD & ASSOCIATES, INC,
schedule of Fees
City of Nashua
Senior Vice President $208
‘Vice President $198
Project Director $186
Senior Project Manager $159
Project Manager $148
Senior Project Engineer/Geologist $130
Project Engineer/Geologist $122
Engineer/Geologist $111
Supervising Technician $99
senior Engineering Technician $90
Engineering Technician $83
Support Staff $72
Subcontractors and Outside Services Cost plus 10%
Other Direct Expenses Cost plus 10%

Hourly rates will be charged for time worked on the project and for the time required for travel
between the office and the meeting or project site, Local travel will be at IRS allowed rates.

Overtime hours will be charged using the hourly rates listed above.
Hourly rates for expert witness testimony, including preparation time, and other special

services such as corporate acquisition due diligence studies that generally require a dedicated
commitment of senior staff, will be provided upon request.

P:\3000s\3066.16\ Project Contrat\2019 GCCS Services Proposal\ Fee Schedule.docx

SANBORN, HEAD & ASSOCIATES, INC. ww w.sanhornhand.com

®) THE CITY OF NASHUA “The Cate City’

Financial Services

Purchasing Department

February 28, 2019
Memo #19-122

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: SETBACK BARRIER WALL CHANGE ORDER #6 (VALUE: $164,655)
DEPARTMENT: 168 SOLID WASTE; FUND: BOND

Please see the attached communication from Jeff Lafleur, Solid Waste Department Superintendent dated
January 31, 2019 for the information related to this contract.

Pursuant to § 5-78 Major purchases (greater than $10,000) A. All supplies and contractual services,
except as otherwise provided herein, when the estimated cost thereof shall exceed $10,000 shall be
purchased by formal, written contract from the lowest responsible bidder, after due notice inviting bids.

The Solid Waste Department Superintendent, Board of Public Works (January 31, 2019 meeting) and the
Purchasing Department recommend the approval of this change order in an amount of $164,655 to
Northeast Earth Mechanics, Inc. of Pittsfield, NH.

Respect 4

c i lod Khe
Dan Kooken

Purchasing Manager

Cc: J Lafleur L Fauteux

229 Main Street * Nashua, New Hampshire 03061 © Phone (603) 589-3330 e Fax (603) 589-3233 |

To:

From:

Re:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: January 31, 2019

Jeff Lafleur, Superintendent
Solid Waste Department

Change Order #6 to contract with Northeast Earth Mechanics, Inc.

A. Motion: To approve Change Order #6 to the contract with Northeast Earth Mechanics, Inc.

Discussion:

(NEM) to continue construction of the residential setback barrier wall in the Phase

Tk Landfill in the amount of 765%. Funding will be through Department: 168
Solid Waste; Fund: Bond;{Activity: Soil Wall.
SIGN, GES

NHDES Solid Waste Rules prohibit placement of municipal solid waste within
500 feet of a residential structure. The Four Hills lined expansion landfill (Phase
I & II) was designed and constructed with the footprint of the landfill encroaching
the 500-foot setback limit to residences on Farmwood Drive to the west and
Pioneer Drive to the east. In order to comply with the residential setback rule, a
barrier must be constructed within the footprint of the landfill to prevent waste
from being placed in the setback. The barrier wall must be expanded continually
as waste elevations in the landfill increase.

In May 2014 the City solicited bids for construction of Phase 1 of the soil wall
under IFB0593-050514. Six contractors submitted bids for the project with
Northeast Earth Mechanics (NEM) being the lowest bidder:

Vendor Bid results
Northeast Earth Mechanics $163,727.50
Morello Construction $167,337.50
Daniel T. Ladd Site Work $203,300.00
Project Resource Group LLC $234,054.00
Greene & Russell, Inc. $266,000.00
SCS Field Services $297,405.00

Under the original contract in the amount of $163,727.50 Northeast Earth
Mechanics (NEM) began initial construction in July 2014 of the western
residential setback barrier wall in the Phase W/Stage I landfill. Per the NHDES
approved scope of work and contract executed June 10, 2014, NEM established a
compacted soil foundation over the primary liner drainage sand and placed four
lifts of concrete waste blocks on the foundation.

Change Order #1 in the amount of $163,912 provided for the continued

construction of the western wall to an elevation of 260 feet in the Phase IVStage I
landfill.

Change Order #2 in the amount of $164,340 continued construction of the
western wall into the Phase II/Stage II landfill up to an elevation of 260 feet.

Change Order #3 in the amount of $291,932 allowed for initial construction of
the eastern setback barrier wall, and continued construction of the western setback
wall to an elevation 268 fect. To construct the eastern setback wall, NEM
established the compacted soil foundation over the primary liner drainage sand
and placed concrete waste blocks on the foundation up to elevation 258 feet.

Change Order #4 in the amount of $199,763 continued construction of the
western setback wall from elevation 268 feet to elevation 276 feet. The change
order also included the purchase of 250 extra blocks to be used in the next phase
of wall construction.

Change Order #5 in the amount of $83,392 continues construction of the eastern
setback wall from the existing elevation of 258 feet to elevation 276 feet. The
height increase is needed to keep pace with waste filling activities in the Phase II
landfill. This phase of wall construction will utilize the extra 250 concrete blocks
purchased under Change Order #4.

Change Order #6 in the amount of $164,655 continues construction of the
western setback wall from elevation 276 feet to elevation 284 feet.

It is the recommendation of the Solid Waste Superintendent to continue
construction of the Set Back Barrier Wall with NEM. They have provided
reasonable, consistent pricing and quality construction services for each
completed phase of this project. Upon approval of Change Order #6, the total

cost of the contract is $4,234;72f.
$1,030,719)

§, EFFECTIVE DATE OF CONTRACT. This contract shall not become effective until and unless approved
by the City of Nashua.

6. NOTICES. All notices, requests, or approvals required or permitted to be given under this contract shall
be in writing, shall be sent by hand delivery, overnight carrier, or by United States mail, postage prepaid,
and registered or certified, and shall be addressed to:

CITY OF NASHUA REPRESENTATIVE: REPRESENTATIVE:

Tim Cummings Robin Bousa

Director of Economic Development Vanasse Hangen Brustlin Inc. (VHB)

City of Nashua 2 Bedford Farms Dr. Suite 200
Bedford, NH 03110

Any notice required or permitted under this contract, if sent by United States mail, shall be deemed to be
given to and received by the addressee thereof on the third business day after being deposited in the mail.
The City of Nashua or Professional Engineer may change the address or representative by giving written

notice to the other party.

IN WITNESS WHEREOF, the parties hereto have caused this contract to be signed and intend to be legally
bound thereby.

Jun = (Ppl Praar

City of Nashua, NH (signisture) Vanasse angen Brustlin, Inc. (signature)
Tim Cummings, Dir. Econ. Dev. Robin Bousa, Managing Director
(Printed Name and Title) (Printed Name and Title)

4/26/22 4/27/22
Date Date

AG 3 of 3

Schedule of Values- Bid Items
November 2018 Concrete Block Residential
Setback Wall Construction

Four Hills Landfill
Nashua, New Hampshire
Item Estimated Quantity Biden Pxvended
No Construction Items (w/units) ries rices
, ($/units) (#)
1 = |Mobilization/Demobilization 1 0.00 $24,000.00
2 {Furnish and Install Concrete Blocks
West Wall Elevation 276 ft. to 630
Elevation 284 ft. $150.00 $94,500.00
3 jFurnish and Install Wall Lining : / ae
West Wail Elevation 276 ft. to 630
Elevation 284 ft. $48.50 $30 555.00
4 |Survey 1
$15,600.00 $15,600.00
» A 100% Performance Bond and 100% Payment Bond, in the amount equal to the Contract

Ww

Award, wil] be required to be posted.

Submission of a project specific health and safety plan that conforms to all applicable OSHA
requirements is required. This plan shall be adhered to by CONTRACTOR'S employees while on
site and during performance of the specified work,

CONTRACTOR: Northeast Earth Mechanics, Inc

AUTHORIZED SIGNATURE: Aechey Stuckuan

EMAIL ADDRESS:_ Rodneys@neeath.com

PHONE:_ 603-365-6284

FAX:

Page J of 4

603-435-7951

DATE: 12/19/2018

Project: SETBACK BARRIER WALL

VENDOR : NORTHEAST EARTH MECHANICS

PURCHASE ORDER: 114148

ORIGINAL VALUE $163,727.00

AMENDED VALUE $327,639.00 $163,912.00 CO-1

PURCHASE ORDER: 124820

AMENDED VALUE $490,979.00 $163,340.00 CO-2

PURCHASE ORDER: 132344

AMENDED VALUE $782,911.00 $291,932.00 CO-3
AMENDED VALUE $982,674.00 $199,763.00 CO-4
AMENDED VALUE $1,066,066.00 $83,392.00 CO-5

AMENDED VALUE $1,230,721.00 $164,655.00 CO-6

2/15/2019