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EXHIBIT B

TECHNICAL SPECIFICATIONS

2021 FOUR HILLS LANDFILL GAS EXPANSION DESIGN
Four Hills Landfill
Nashua, New Hampshire

File No. 3066.21
January 2021

SANBORN, HEAD & ASSOCIATES, INC. www.sanbornhead.com

CONTENTS

DIVISION 1 - GENERAL REQUIREMENTS

Section 01110 - Summary of Work

Section 01290 - Measurement and Payment

Section 01310 - Project Coordination and Meetings

Section 01320 - Survey Control

Section 01330 - Submittals

Section 01450 - Quality Control

Section 01520 - Construction Facilities and Temporary Controls
Section 01780 - Project Record Documents

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SANBORN HEAD

SECTION 01110

SUMMARY OF WORK

PART 1 - GENERAL

11 ITEMS OF WORK

A.

The major items of Work associated with the construction of the landfill gas

collection and control system (GCCS) expansion include, but are not limited to

the following:

1. Providing construction layout and documentation survey.

2. Excavating and backfilling trenches and relocating waste associated with

excavations to the active landfill as directed by OWNER.

Furnishing materials for and constructing gas collection trenches.

Furnishing materials for and constructing LFG extraction wells.

Furnishing and installing wellhead assemblies.

Furnishing and installing bentonite seals.

Furnishing, welding, and installing gas collection and conveyance piping.

Connecting installed gas conveyance piping to the existing gas collection

and conveyance system.

9. Furnishing and installing submersible dewatering pumps, wells caps, and
appurtenances.

10. Furnishing, welding, and installing compressed air pipe.

11. Furnishing, welding, and installing liquid condensate main drain pipe.

12. Implementing odor control measures during waste excavation activities.

ONAWMAW

1.2 AVAILABILITY OF SOIL MATERIALS

A.

B.

Soil is available on site and may be used as backfill within the landfill.
CONTRACTOR is responsible for sampling and testing on-site soil materials for
conformance with these specifications. CONTRACTOR shall coordinate use of
on-site materials with OWNER.

All other soil materials are not available on-site.

13 SPECIAL REQUIREMENTS

A.

The project is located at an active landfill facility. CONTRACTOR shall
coordinate the Work with facility operating staff. The Work shall be completed
in a manner that provides continuous and unlimited access to the active
landfill areas by waste hauling and landfill operation vehicles during facility
operating hours.

Existing GCCS features are located throughout the site. CONTRACTOR shall
locate and protect the existing GCCS features against damage. Damaged

SANBORN HEAD

Section 01110 - Summary of Work Page 2 of 2
January 2021 3066.21

features shall be repaired or replaced to the satisfaction of ENGINEER and
OWNER at CONTRACTOR’s expense.

C. Construction activities at the site must be performed during daylight hours
between 7:00 am and 4:00 pm Monday through Friday.

1.4 © WORK PERFORMED UNDER SEPARATE CONTRACTS
A. This work will be performed independently of other contracts.
PART 2 - PRODUCTS
Not used.
PART 3 - EXECUTION

Not used.
[END OF SECTION 01110]

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SANBORN HHAD

SECTION 01290

MEASUREMENT AND PAYMENT

PART 1 - GENERAL

1.1 MEASUREMENT OF QUANTITIES

A.

B.

Measurements will not be obtained for lump sum items.

ENGINEER shall verify measurements for all unit price Contract items to
evaluate progress payment applications, and to confirm final quantities of
Work in place prior to the final payment of the Contract based upon digital
Record Drawing provided by CONTRACTOR.

All units of measurement shall be standard United States units as applied to
the specific items of work and as interpreted by ENGINEER. Area
measurements shall be calculated in PLAN VIEW. Additional compensation for
slope adjustments will not be considered.

12 PAYMENT

A.

For lump sum payment items, payments to CONTRACTOR will be based upon
CONTRACTOR’s estimate of percentage completion of the lump sum tasks
unless stated otherwise in the Bid Item Definitions. The estimate shall be
based on approximated quantities of Work completed in accordance with the
Drawings and Specifications and shall be reviewed and approved by
ENGINEER.

For non-lump sum payment items, payments to CONTRACTOR will be made for
the actual quantities of Work completed and accepted in accordance with the
Drawings and Specifications. Upon completion of the construction, if these
actual quantities show either an increase or a decrease from the quantities
given in the Bid Form, then the Contract unit prices will still prevail, except as
provided Parts 1.5 and 1.6 of this Section.

CONTRACTOR shall accept as compensation, full payment for furnishing all
materials, labor, tools, equipment, and incidentals necessary to complete the
Work and for performing all Work contemplated and embraced by the
Contract. The payment shall be made with the prices contained in the Bid
Form, which shall include compensation for all loss or damage that may result
from the nature of the Work, or from the action of the elements, or from any
unforeseen difficulties that may be encountered during the execution of the
Work and until its final acceptance by ENGINEER, and for all risks of every
description, connected with the execution of the Work, except as provided
herein; also for all expenses incurred in consequence of the suspension of the
Work as herein authorized.

SANBORN HEAD

Section 01290 — Measurement and Payment Page 2 of 4

January 2021

3066.21

1.3

1.4

D.

Retainage will be with held as defined in the Bid Documents.

PARTIAL PAYMENTS:

A.

Partial payments shall be made as the work progresses. All partial invoices
and payments shall be subject to correction in the final quantity invoice and
payment.

Prior to request for partial payment, an authorized representative of
CONTRACTOR shall meet with ENGINEER to determine and agree upon
quantities of unit price Work accomplished and/or completed during the Work
period. Following the meeting with ENGINEER, CONTRACTOR will prepare in
digital format, a spreadsheet approved by ENGINEER with a breakdown of all
quantities and requested values. The spreadsheet will tally all payments items
and will included at a minimum all previous payment applications, materials
stored, materials incorporated each period, change orders, retainage, percent
complete, total payments to date, and total contract value remaining.

CONTRACTOR will prepare an “Application for Payment” form as part of his
partial payment request. An updated Project Schedule shall be provided with
each application.

The completed “Application for Payment” form will provide the basis of
ENGINEER’s review of quantity estimates upon which payment will be made.
Items not appearing on the “Application for Payment” form will not be
considered for payment.

An item of Work, or portion thereof, will not be deemed complete and ready
for payment if CONTRACTOR’s Record Drawings are not up-to-date with
respect to that item.

A progress payment shall not be required, nor shall payment be made, when, in
the opinion of ENGINEER, the Work is not proceeding in accordance with the
provisions of the Contract.

PAYMENT FOR MATERIALS ON HAND

A.

If requested by CONTRACTOR, and at the discretion of ENGINEER and OWNER,
payment may be made for all or part of the value of acceptable, non-perishable
materials and equipment that will be incorporated in the Work provided that
said materials and equipment have been delivered to the Site or other
acceptable storage places, and were not used at the time the application for
payment.

In order for payment to be made on stored materials and equipment, the
application for payment shall be accompanied by receipts for said items.

SANBORN HEAD

Section 01290 — Measurement and Payment Page 3 of 4

January 2021 3066.21
C. Materials and Equipment paid for by OWNER prior to installation shall become
the property of OWNER and in the event of default on the part of
CONTRACTOR, OWNER may use, or cause to be used, these materials and
equipment in the construction of the Work.
D. CONTRACTOR shall be responsible for any damage to, or loss of, stored
materials and equipment.
E. The amount paid by OWNER for stored materials and equipment shall reduce
estimated amounts due to CONTRACTOR as the material is used in the Work.
1.5 PAYMENT FOR INCREASED OR DECREASED QUANTITIES

1.6

1.7

1.8

A.

Payment for unit price adjustments shall be made when alterations in the
Work quantities not requiring supplemental agreements are ordered and
performed. CONTRACTOR shall accept payment in full at the Contract unit
price for the actual Work quantities performed. No allowance will be made
for anticipated profits.

ELIMINATED CONTRACT ITEMS

A. OWNER or ENGINEER may eliminate any item from the Contract should they
be found unnecessary for the proper completion of the Work. Such action shall
in no way invalidate the Contract, and no allowance will be made for
eliminated items in final payments to CONTRACTOR.

INCIDENTAL WORK

A. Incidental work items that payment is not measured nor made, include, but are
not limited to:

1. Clean up.

2 Site restoration.

3. Cooperation with the facility operations staff.

4. Traffic regulation.

5. Survey control and survey required for Payment Applications and Record
Drawings.

6. Progress Project Scheduling.

7. Project Record Drawings.

8. All other work indicated in the Contract Documents and not specifically
listed among the bid items.

BID ITEM DEFINITIONS

A. Bid item definitions are provided in the Bid Documents.

SANBORN HEAD

Board of Aldermen — 9/26/17 Page 14

Alderman Lopez

| think it is important for us to acknowledge: A) that there are low income people in Nashua, and B) before deciding
not to use that definition as HUD defines it to understand what it is, because HUD’s low income definition is 40
percent of the median income. If the median income in Nashua is $60,000 a year then we are basically saying
that anybody who is $40,000 or less doesn’t particularly have a special voice. If that’s what low income is, | think it
is important for us to make sure that those people are identified.

President McCarthy

We're getting afield of the amendment. The Board just voted 14-1 to take that language out. That question should
have been decided at the committee.

Alderman Lopez

It was. We did discuss it at the committee.

Alderman Moriarty

I’m particularly interested in this. | like it. It makes me happy to see this move forward because | was on the
Human Affairs Committee five years ago when we worked togheter. | think | might have been instrumental in
writing some of this in the first place. Putting aside the antidotes, the fact that there was some stress associated
with the committee at the time. It’s nice to see that stress seems to have abated and now we’re able to go to
iteration two relatively stress free. | like that.

MOTION CARRIED TO AMEND WITH THE AMENDED BLUE COPY
MOTION BY ALDERMAN WILSHIRE FOR FINAL PASSAGE AS AMENDED
ON THE QUESTION

Alderman Deane

My comment has to do with the fact, Alderman Lopez, | think it is disingenuous to sit there and say we don’t
recognize and support low income people in this community. This book here is filled with appropriations that
help out many, many low income people in the community. We spend a lot of time, a lot of effort and we
contribute quite a bit of an appropriation to help people between our welfare, between this program here,
between our other appropriations throughout our operating budget. We do quite a bit in this community. I’m a
little taken aback by that. I’ve always supported that. When Review & Comment came down, | never looked at
altering anything because | always respected what they did. They sat up there for months doing all that work.
We gave them a figure to work with, they worked with it. The entities came in and we approved the
appropriations that were sent down. | think we do a substantial amount of work for everybody in this
community.

Alderman Lopez

| just want to point out that as much as we have done, there still are people in Nashua in need. We just made a
decision to remove specific language protecting their right to be heard on this committee without actually finding
out what the definition of low income was. That’s why | made the comment afterwards. | was confirming what it
was. I’m not necessarily disparaging all of the work that other aldermen have done over the years, I’m just
pointing out that there should have been a voice, in my opinion, on this committee specifically for people in need.
People who are making $40,000 or less.

Section 01290 — Measurement and Payment
January 2021

PART 2 - PRODUCTS

Not Used.

PART 3 - EXECUTION

Not Used.

[END OF SECTION 01290]

Page 4 of 4
3066.21

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SANBORN

HEAD

SECTION 01310

PROJECT COORDINATION AND MEETINGS

PART 1 - GENERAL

1.1

1.2

1.3

PRECONSTRUCTION CONFERENCE

A.

CONTRACTOR shall not commence Work until a preconstruction conference
with representatives of ENGINEER, and OWNER is held. This preconstruction
meeting will be arranged by OWNER and is intended to establish lines of
communication between the parties involved. The time and place of the
preconstruction meeting will be determined at least one week prior to the start
of Work.

PROGRESS MEETINGS

A.

CONTRACTOR shall make arrangements for regular progress meetings. The
meetings will be held to review the construction progress, to discuss upcoming
work, to make necessary adjustments to schedules, to discuss submittals,
changes and substitutions, and to discuss other items affecting the Project.
OWNER or ENGINEER will preside at progress meetings.

Attendees at the progress meetings shall include CONTRACTOR, ENGINEER,
OWNER, major subcontractors, suppliers, and representatives from the New
Hampshire Department of Environmental Services as appropriate to discuss
agenda topics for each meeting.

JOB SITE ADMINISTRATION

A.

CONTRACTOR shall supervise, inspect and direct the Work competently and
efficiently, applying such skills and expertise to perform the Work in
accordance with the Contract Documents. CONTRACTOR shall be solely
responsible for the means, methods, techniques, sequences and procedures of
construction, and shall be responsible to see that the completed Work
complies with the requirements set forth in the Contract Documents.

CONTRACTOR shall keep a competent and authorized supervisory
representative at each work location during all working hours who shall act as
the agent of CONTRACTOR.

CONTRACTOR’s supervisory representative shall be a competent English-
speaking superintendent capable of reading and thoroughly understanding the
Drawings and Specifications, with full authority to fulfill CONTRACTOR’s duties
and responsibilities on the job. If, in the opinion of OWNER or ENGINEER, the
supervisory representative or any of his/her successors proves incompetent,

SANBORN HEAD