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ITEM 616.191 — ALTERATION OF TRAFFIC SIGNALS — 360 DEGREE
TRAFFIC CAMERAS

A. SCOPE

This work shall include the labor and material for the installation of a GRIDSMART Video
Detection System. The GRIDSMART Video Detection System shall include GS2 Processor, 360
Degree Camera, Mounting Hardware, Data Module, Surge Protection, and CatSe Underground
Shielded Wire, and any additional hardware or software required for a complete installation in
accordance with manufacturer recommendations.

B. MEASUREMENT AND PAYMENT

This item will be measured and paid per each 360 GRIDSMART Camera installed. Payment
shall include all costs associated with purchasing and installing the camera.

Page 32 of 43

ITEM 616.7 - LOCAL TRAFFIC LOOPS 6’ X 50’ (2-4-2 TURN)

A. SCOPE

This work consists of furnishing all labor, materials and equipment necessary to install the
quadruple loop detectors as directed by the Engineer.

B. MATERIALS AND CONSTRUCTION

This item shall include all labor, materials and equipment necessary to install new quadruple
loop detectors 2-4-2 turn, in conjunction with the paving program. Loops shall be installed in the
pavement surface prior to final overlay or top course.

a. Installation shall be in accordance with the latest approved NHDOT Standard Details
and Specifications.

b. The City of Nashua will connect the new loop in the control panel if needed

c. Contractor will make connection in pull box. Contractor will solder, wire nut and
silicone seal connections for new loop at pull box. “Hockey puck” will not be used.

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

and make loops functional.

Contractor shall record the location of each loop. Quantities of loops shall be recorded per street.
Payment is contingent upon submittal of quantities in a per street format.

Page 33 of 43

ITEM 618.6 - UNIFORMED OFFICERS
A. SCOPE

This work shall consist of furnishing uniformed officers, with or without vehicles, as required to
direct traffic through or around the Work as ordered by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall supply qualified uniformed officers as per the latest approved NHDOT
Standard Specifications for Road Construction. Uniformed officers shall only be used when the
Engineer has previously approved it. Daily coverage needs to be approved by the Engineer.

C. MEASUREMENT AND PAYMENT
Uniformed Officers will be measured by the actual number of hours authorized, as determined
by the Engineer. This item has a budgeted allowance as shown on the Bid Form. Payments to

Contractor will be made based on approved hours and resulting dollar amounts on Police
Department invoices and only after contractor’s proof of payment to Police Department.

Contractor shall record the number of hours for each officer used. Hours shall be recorded on a
per street basis. Payment is contingent upon submittal of quantities in a per street format.

Page 34 of 43

ITEM 618.7 - FLAGGERS
A. SCOPE

This work shall consist of furnishing qualified flaggers, as required to direct traffic through or
around the Work as ordered by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall supply qualified flaggers as per the latest approved NHDOT Standard
Specifications for Road and Bridge Construction. Daily coverage needs to be approved by the
Engineer.

C. MEASUREMENT AND PAYMENT

Flaggers will be measured by the actual number of hours authorized, as determined by the
Engineer. Payment shall be made at the contract price per hour.

Contractor shall record the number of hours for each flagger used. Hours shall be recorded on a
per street basis. Payment is contingent upon submittal of quantities in a per street format

substantiated with invoices from flagging subcontractor.

Payment will not be made for flaggers who are not equipped with appropriate equipment or who
do not follow standard practice in performing their duties.

Page 35 of 43

ITEM 619.1 - MAINTENANCE OF TRAFFIC
A. SCOPE

This work shall consist of providing and maintaining safe and passable traffic accommodations
for public traffic and furnishing, erecting and maintaining necessary traffic signs, barricades,
lights, signals, delineators, concrete barriers, signs, and other traffic control warning devices
through the work zone. The contractor is responsible for preparing a work area that is free of
parked vehicles or other obstructing objects. This includes, but is not limited to, erecting “no-
parking” signs provided by the City of Nashua 3 days prior to paving and returning same signs as
directed by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all labor, materials, equipment and transportation necessary for the
required maintenance of traffic needs based on the Contractors daily operations in accordance
with the latest approved NHDOT Standard Specifications for Road and Bridge Construction, and
the latest approved MUTCD. At a minimum, the Contractor’s crew shall, at all times, carry Two
(2) of the following signs to be erected as the need may arise:

e ROAD WORK AHEAD (MUTCD W20-1)
e ONE LANE ROAD AHEAD (MUTCD W20-4)
e DIRECTIONAL ARROW SIGN (MUTCD W1-6)
e FLAGGER SIGN (MUTCD W20-7)
Contractor shall provide a minimum of 2 variable message signs for use on major roads.

Contractor shall be responsible for getting approved street opening permits, submitting traffic
control plans for all streets, obtaining lane closure or detour approval permits, and obtaining
emergency work permits.

The Contractor must notify, by email, the Engineer, and the City Solid Waste Department
Contact of specific types and locations of work. Notifications shall be provided the day before
work commences, during regular business hours (8am-5pm).

Engineer:
Mark Saunders

SaundersM@NashuaNH. gov

Solid Waste Department Contact:
Kevin Naro
NaroK@NashuaNH. gov

Page 36 of 43

C. MEASUREMENT AND PAYMENT

Maintenance of Traffic will be measured as a unit. Payment for maintenance of traffic shall be at
the contract lump sum, which lump sum includes full compensation for material, equipment and
labor to complete this portion of the Bid Schedule. The lump sum can only be amended by
written, approved change order. Progress payments towards the lump sum will be made
periodically based on the percent of the contract and the balance will be paid at final payment
upon completion of all project requirements. Should the contract be terminated prior to
completion, or the contract work not completed, total payment for this item shall be proportional
to the percentage of the contract completed.

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CLIENT: City of Nashua

CONSULTANT Hazen and Sawyer
PROJECT: EPA Municipal Separate Storm Sewer
System (MS4) Support Services

AGREEMENT FOR PROFESSIONAL SERVICES
AMENDMENT Ne 1
This Amendment dated the day of ,20 to the Agreement for
Professional Services (“the “Agreement”) dated the 18th day of February, 2021 is made and
entered into between City of Nashua ("CLIENT") and Hazen and Sawyer ("CONSULTANT’,

collectively, “the Parties.”.

WHEREAS, the Parties desire to amend “Exhibit B--Hazen and Sawyer Scope of Service
Proposal, dated January 21, 2021” and paragraph 4 "COMPENSATION" of the Agreement

NOW THEREFORE, in consideration of the mutual promises herein contained, CLIENT and
HAZEN agree to modify the following paragraphs of the Agreement.

Exhibit B--Hazen and Sawyer Scope of Service Proposal, dated January 21, 2021

The Scope of Services currently authorized to be performed by HAZEN in accordance with the
Agreement, and previous Amendments, if any, is modified as follows:

Task 1 — Dry Weather Outfall Screening and Sampling
Addition of 100 outfalls to be screened and sampled, project management, and QA/QC of second
summary memorandum.

Task 7 — Annual Reports
Additional labor for second year annual report.

COMPENSATION

For the Additional and/or Changed Services to services set forth above, CLIENT shall pay HAZEN
the following additional compensation:

Task 1 — Dry Weather Outfall Screening and Sampling $28,575
Task 7 — Annual Reports $11,852
Amendment 1 increases the current Contract Agreement Maximum Amount from $187,550 by

$40,427 to a revised Maximum Amount of $227,977. The cost of the additional services shall not
exceed $40,427

MS4 Assistance Il Amendment No. 1 r1.docx020218 Page 1 of 2
161544 Amendment No. 1

ITEM 632 —- RETROREFLECTIVE PAVEMENT MARKINGS
A. SCOPE

This work shall consist of furnishing and placing white or yellow retro reflective paint pavement
markings and retro reflective thermoplastic pavement markings at locations shown on the plans
or as ordered by the Engineer.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all labor, materials, equipment and transportation necessary for the
required placement of retro reflective paint and thermoplastic pavement markings in accordance
with the latest approved NHDOT Standard Specifications for Road and Bridge Construction, and
the latest approved MUTCD. A layout drawing shall be approved by the Engineer prior to any
work being done to the street.

Application temperature requirements shall be strictly enforced. Material placed outside
temperature requirements will not be accepted.

Striping shall match existing striping and be replaced in kind or as directed by the Engineer.
All stop bars, crosswalks and symbols shall be retro reflective thermoplastic and all long lines
shall be retro reflective paint.

C. MEASUREMENT AND PAYMENT

632.0104 Retroreflective Paint Pavement Marking,
Single Solid Line, 4in. Linear Foot

632.0112 Retroreflective Paint Pavement Marking,
Single Solid Line, 12in. Linear Foot

632.3112 Retroreflective Thermoplastic Pavement Marking,
Single Solid Line, 12in. Linear Foot

632.3118 Retroreflective Thermoplastic Pavement Marking, 18in. —_ Linear Foot

632.32 Retroreflective Thermoplastic Symbol Square Foot

Payment shall be per the unit listed above. Symbols will be paid for at the square footage listed
below:

Turn Arrow = 17 SF

Straight and Turn Arrow = 28.8 SF

Left/Through/Right = 40.25 SF

Straight Arrow = 12.5 SF

Only = 22.3 SF
Ahead = 31.3 SF
Stop = 22.2 SF

School = 34.7 SF

Page 38 of 43

X-ing = 20.8 SF
Contractor shall record the liner feet and square feet of retroreflective pavement markings

placed. Quantities shall be recorded on a per street basis. Payment is contingent upon submittal
of quantities in a per street format.

Page 39 of 43

ITEM 632.80 - TEMPORARY PAVEMENT MARKERS
A. SCOPE

This work shall consist of furnishing, placing, and removing temporary pavement markers
(TPMs) at locations shown on the plans or as ordered by the Engineer in accordance with the
latest approved NHDOT Standard Specifications for Road and Bridge Construction, and the
latest approved MUTCD.

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all labor, materials, equipment and transportation necessary for the
required placement and removal of TPMs in accordance with the latest approved NHDOT
Standard Specifications for Road and Bridge Construction, and the latest approved MUTCD.

Channelizing Lines: TPMs used in channelizing line applications shall have white one-way retro
reflectors facing traffic.

Lane Lines: TPMs used in lane line applications shall have white one-way or white/red two-way
retro reflectors as specified, with white facing traffic.

Edge Lines: TPMs used in edge line applications shall have one-way reflectors facing traffic, and
which match the existing edge line color.

Center Lines: TPMs used in center line applications shall have yellow two-way reflectors.

C. MEASUREMENT AND PAYMENT

The quantity of Temporary Pavement Markers to be paid for will be the actual number of
temporary pavement markers which have been satisfactorily installed and accepted by the
Engineer, and will be paid for at the contract unit price specified for each. Replacement of
temporary pavement markers that are damaged or removed shall be incidental to original
installation.

Contractor shall record the number of temporary markers installed. Quantities shall be recorded
on a per street basis. Payment is contingent upon submittal of quantities in a per street format.

Page 40 of 43