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ITEM 417 - COLD PLANING OF BITUMINOUS SURFACES
A. SCOPE

This work shall consist of the removal of existing bituminous pavement between road edges, to
the depth shown on the plans or as ordered by the Engineer. Maximum depth will vary from 1.5”
to 2”, depending upon the specific street treatment.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, labor, equipment, and transportation necessary for
work in accordance with the latest approved City of Nashua Standard Specifications for Road
Construction, or the latest approved NHDOT Standard Specifications for Road and Bridge
Construction. The most stringent specification shall apply.

The material removed from this operation shall remain the property of the City of Nashua and
shall be transported and stock piled by the contractor at the Four Hills Landfill at 830 West
Hollis St in Nashua.

If the road is to be open to traffic after cold planning, level changes shall be tapered by use of
asphalt fillets. Fillets shall be tapered at a rate of 1 FT per inch along longitudinal level changes
and at a rate of 1 FT per 2-inches along transverse level changes. All fillets shall be installed
flush with top of the existing asphalt surface and must be acceptable to the Engineer. The
Contractor shall be responsible for installing, maintaining and replacing all damaged fillets,
where necessary, until the wearing course 1s placed.

All raised catch basins and manholes shall be spray painted a florescent color around the top of
frames.

Raised structures greater than 2 inches shall be provided with asphalt fillets until the wearing
course is paved. The Engineer may direct the contractor to install fillets at other raised structures
at critical locations.

Fillets and spray painting of castings shall continue as needed or directed by the Engineer until
the top course of pavement is placed and are considered subsidiary to this item.

The Contractor shall prevent any materials from entering drainage structures from this operation
and shall clean out said structures as directed by the Engineer.

All catch basins shall be protected from millings by use of a silt sack. All materials, labor,
equipment, and transportation necessary to install, maintain, and remove the silt sacks and
dispose of collected material shall be subsidiary.

If directed, the Contractor shall furnish all materials, labor, equipment, and transportation

necessary to cut 6” cores to subbase prior to the start of cold planning. Contractor will be
responsible for adequately backfilling holes with hot mix asphalt.

Page 10 of 42

C. MEASUREMENT AND PAYMENT
This item shall be measured by the Square Yard of Cold Planing of Bituminous Surfaces.

Payment for this item shall be at the contract unit price per Square Yard. This payment shall also
include all materials, labor, equipment, and all else needed to complete the work under this item.

Contractor shall record the square yards of cold planed area for each street. Payment is
contingent upon submittal of quantities in a per street format.

Cores cut in accordance with specific direction from the Engineer in advance of cold planing
shall be measured and paid for under Item 1010.9 Asphalt Core.

Page 11 of 42

ITEM 417.20- COLD PLANING TRANSITIONS
A. SCOPE

This work shall consist of the removal of existing bituminous pavement the depth and limits
shown on the plans or as directed by the Engineer. Cold planning transitions are required to tie in
overlays with existing pavement.

For roadways which are being reclaimed this item shall only be used to pay for cold planing at
driveway tie-ins as directed by the Engineer.

For roadways which are being cold planed (milled) prior to overlay, this item shall only be used
to pay for cold planing at driveway tie-ins.

For roadways which are being overlaid without overall cold planing (milling), this item shall be
used to pay for cold planing at driveway transitions and for cold planing transitions to existing
roadway pavement at limits of work as directed by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, labor, equipment, and transportation necessary for
work in accordance with the latest approved City of Nashua Standard Specifications for Road
Construction, or the latest approved NHDOT Standard Specifications for Road and Bridge
Construction. The most stringent specification shall apply.

The Contractor shall prevent any materials entering drainage structures from this operation and
shall clean out said structures as directed by the Engineer.

The material removed from this operation shall remain the property of the City of Nashua and
shall be transported and stock piled by the contractor at the Four Hills Landfill at 830 West
Hollis St in Nashua.

If the road is to be open to traffic after cold planning, level changes shall be tapered by use of
asphalt fillets. Fillets shall extend a minimum of 2’ from level change, and be flush with top of
existing asphalt surface. Fillet construction must be acceptable to the Engineer. Fillets shall be
required until the wearing course is placed and shall be removed before each course of pavement
is installed.

All raised catch basins and manholes shall be spray painted a florescent color around the top of
frames.

Raised structures or driveways greater than 2 inches shall be provided with asphalt fillets until
the wearing course is paved. The Engineer may direct the contractor to install fillets at other

critical locations.

Fillets and spray painting of castings shall continue until the top course of pavement is placed
and are considered subsidiary to this item.

Page 12 of 42

CONTRACT FOR PROFESSIONAL SERVICES

Pavement Management Support Services
A CONTRACT BETWEEN

The City of Nashua, 229 Main Street, City Hall, Nashua, NH 03060
AND

Stantec Consulting Services, Inc.

and its successors, transferees and assignees (together “Professional Engineer”)

Name and Title of Professional Engineer

5 Burlington Woods Drive Suite 210, Burlington MA 01803-451

Address of Professional Engineer

WHEREAS, the City of Nashua, a political subdivision of the State of New Hampshire, from time to
time requires the services of a Professional Engineer; and

WHEREAS, it is deemed that the services of a Professional Engineer herein specified are both
necessary and desirable and in the best interests of the City of Nashua; and

WHEREAS, Professional Engineer represents they are duly qualified, equipped, staffed, ready,
willing and able to perform and render the services hereinafter described;

Now, THEREFORE, in consideration of the agreements herein made, the parties mutually agree as
follows:

1. Documents Incorporated. The following exhibits are by this reference incorporated herein and are
made part of this contract:

Exhibit A--General Conditions for Contracts
Exhibit B-- Stantec Pavement Management Support Services Proposal dtd May 4, 2022

The Contract represents the entire and integrated agreement between the parties and supersedes prior
negotiations, proposals, representations or agreements, either written or oral. Any other documents
which are not listed in this Article are not part of the Contract.

In the event of a conflict between the terms of the Proposal and the terms of this Agreement, a written
change order and/or fully executed City of Nashua Purchase Order, the terms of this Agreement, the
written change order or the fully executed City of Nashua Purchase Order shall control over the terms of
the Proposal.

2. Work to be Performed. Except as otherwise provided in this contract, Professional Engineer shall

furnish all services, equipment, and materials and shall perform all operations necessary and required to
carry out and perform in accordance with the terms and conditions of the contract the work described.

AG 1 of 4

C. MEASUREMENT AND PAYMENT

The accepted quantities of Cold Planing Transitions will be paid for by the Square Yard
measured in the field and approved by the Engineer. Contractor shall record the square yards of
cold planed transitions for each street. Payment is contingent upon submittal of quantities in a
per street format. This payment shall also include all materials, labor, equipment, and all else
needed to complete the work under this item.

Page 13 of 42

ITEM 603.82212 —- 12” POLYETHYLENE PIPE (TYPE S)

A.

SCOPE

This work shall consist of furnishing and installing polyethylene (PE) pipe type S, at the
locations shown on the plans or as ordered by the Engineer.

MATERIALS AND CONSTRUCTION

The Contractor shall furnish all materials, including the necessary joints, fittings, and
connections as required, labor and equipment necessary for the excavation, placement,
and joining of pipe in accordance with relevant provisions of Section 603 of the NHDOT
Standard Specifications for Road and Bridge Construction, latest edition. Sawed
pavement, common structure excavation to the depth specified in of Section 206.4.1 of
the NHDOT Standard Specifications for Road and Bridge Construction latest edition,
secondary excavation required in the imperfect trench method, bedding, shaping of
bedding, and backfill shall be included in this work.

MEASUREMENT AND PAYMENT

Pipe will be measured by the linear foot to the nearest foot. Measurement of circular pipe
will be made between the ends of the pipe along the central axis, including through
elbows and bends, as installed. No separate measurement will be made for elbows or
bends. Connection of the pipe to an existing drainage structure as directed by the
Engineer is incidental.

Page 14 of 42

ITEM 604.124 - CATCH BASIN

A. SCOPE

This work includes furnishing and installing a catch basin at locations shown on the plans or as
directed by the Engineer.

B. MATERIALS AND CONSTRUCTION

The contractor shall furnish all materials, labor, equipment, and transportation necessary to
complete the work in accordance with the latest approved City of Nashua Standard
Specifications for Road Construction, or the latest approved NHDOT Standard Specifications for
Road and Bridge Construction. The most stringent specification shall apply unless otherwise
directed by the Engineer.

Except as noted below for leaching type catch basins, catch basins shall be Type B — 4’ diameter.

Where directed by the Engineer, catch basin shall be a leaching type catch basin installed in
compliance with attached detail.

C. MEASUREMENT AND PAYMENT
Payment for Catch Basin shall be at the contract unit price specified for each location. This
payment shall include all materials, labor, equipment and all else needed to complete the work

under this item.

Leaching type catch basins shall be paid for at two hundred and fifty percent (250%) of the
contract unit price for Item 604.124.

Setting frame and grate shall be incidental.

Page 15 of 42

Technical Specifications — 2021 Paving Program Residential Roadways

Leaching Catch Basin Detail

SINGLE GRATE - 24° » 24° OPENING
DOUBLE GRATE - 24" « 40" OPENING

TOP SLAB [H-20 LOADING)

EE SPI FILTER FABRIC
| A SSS (MIRAF) 140M OR
A “ APPROVED EQUAL}

i CRUSHED STONE (COURSE)

NHOOT ITEM 204.6
[MIN

PERFORATION (TYP)
12 OF BOTH WAYS

1. BASE SHALL BE SOLID, SEDIMENT SHALL BE
REMOVED ON 4, REGULAR SCHEDULED BASIS
BY OVINER.

2. LOCATION OF DRAIN LINE OPENINGS VARY.
CORE TO JOB SPECIFICATIONS (SEE DRAIN
PROFILES).

3. STRUCTURE DESIGN AND REINFORCEMENT
SHALL CONFORM TO ASTM Ca? 6 ANID ATES.
CONCRETE SHALL BE 4000 PSI MINIMUM.

4. FILTER FABRIC MUST BE PLACED OVER

| CRUSHED STONE AND OVERLAP EXISTING

{ +4 br BLA 2-0" MATERIAL BY 12° TO PREVENT PAVEMENT
Fell. MIM. BASE COURSE MATERIALS FROM MIGRATING

INTO THE CRUSHED STONE.

LEACHING CATCH BASIN

NOT TO SCALE

3 M
2 te
th Th =
[aa a o
a Pf ..
Fo. ae .
=| 5 Oo ml * oat
om 2 ae & * (= : =
uu at
ala fu 5° ___— at PERFORATION
a — ST
whe ae & =
=| & “ NOT TO SCALE
hee \] NOTES:
a

127 |

Page 16 of 42

ITEM 604.4 - REPAIR OF EXISTING STRUCTURES
A. SCOPE

This work consists of repairing existing structures below 12” from the bottom of existing casting
frame.

B. MATERIALS AND CONSTRUCTION

The contractor shall include all labor, materials, equipment, and transportation necessary to
repair existing structures other than within the top 12 inches below the bottom of casting frame.
Repairs in that section shall not be paid under this item.

The Contractor is responsible for the management of stormwater to all structures altered/dropped
for paving operations for the duration of the project until final pavement has been placed and
accepted by the City and/or the Engineer. The Contractor shall prevent any materials from
entering drain and sewer structures from this operation and shall clean out said structures if any
material enters.

Mortar shall comply with NHDOT Section 707. Brick shall be sound, hard, and uniformly
burned brick, regular and uniform in shape and size, of compact texture, and satisfactory to the
Engineer. Bricks shall comply with ASTM C32, for Grade SS, hard Brick.

Mortar shall be tooled into every vertical joint between bricks prior to installing a new horizontal
brick layer. Mortar between brick layers shall be 3/8” thick and fully cover all bricks in the layer.
Use of the weight of castings and additional brick layers to facilitate joint filling and further
spreading of mortar is not permitted. All brickwork shall be sealed on the outside and inside of
the structure with mortar. The casting frames shall be set in a ring of mortar extending to the
outer edge of the masonry. Mortar shall be placed on top of the bottom flange and smoothly
finished to have a slight slope that will shed water away from the frame.

All mortar shall be mixed with a cement mixer as approved by the Engineer. Mixing mortar by
hand/shovel will not be permitted.

Unless otherwise noted herein, this work shall conform to the latest approved City of Nashua
Standard Specifications for Road Construction, City of Nashua Standard Specifications for
Sewers and Drains, and the latest approved NHDOT Standard Specifications for Road and
Bridge Construction. The most stringent specification shall apply unless otherwise directed by
the Engineer.

C. MEASUREMENT AND PAYMENT
Payment for the Repair of Existing Structures shall be at the contract unit price per vertical foot

to the nearest 0.1 of a foot. This payment shall include all materials, labor, equipment, and all
else needed to complete the work under this item.

Page 17 of 42

Contractor shall record the vertical feet of repair completed for each structure as identified by
Nashua’s GIS naming system, and the total vertical feet of repair for each street. Payment is
contingent upon submittal of quantities in a per structure, and per street format.

Page 18 of 42