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2.6

B. Install aneroid bellows assembly for atmospheric pressure reference in the
junction box on the leachate sump side riser pipes, unless otherwise noted.
Use manufacturer-supplied vented cable full length to bellows.

C. Level transmitters shall be intrinsically safe. Circuit shall be rendered
intrinsically safe by Zener Barrier in the control panel.

D. Acceptable Manufacturer: WIKA Instrument Corporation IL-10 transducer
with Pressure Systems, Inc. Series 815 Aneroid Bellows.

E. Schedule:

Location Range Cable Length
Phase III Primary Leachate Sump 0-100 inches water 125 feet
Phase III Secondary Leachate Sump | 0-100 inches water 125 feet

PUMP-DOWN SWITCHES

A.

The secondary leachate pump-down switches shall be tethered, wide-angle
float type.

Pump-down switches shall be normally open contacts with an activation range
between 7 and 9 inches as installed in the secondary leachate sumps.

Pump-down switches shall be sized to operate without binding or hanging
when installed in the secondary leachate sumps with the provided secondary
leachate pumps.

The switch element shall consist of a SPDT, snap-acting mechanical contact.
Switch element activation shall not be sensitive to rotation of the float or
turbulence in the sump.

Mercury-based switch elements shall not be acceptable.

The float body shall be PVC or other suitable material, and the cable shall be
flexible 16-gauge, 3-conductor SJOW cable.

Float switch installed inside the leachate vault shall be intrinsically safe.
Circuit shall be rendered intrinsically safe by Zener Barrier in the control

panel,

The pump-down switch shall be supplied with mounting hardware adequate to
provide a stable, consistent operating range for the switch.

Acceptable Manufacturer ~ SJE-Rhombus Milliampmaster or approved equal.

File No. 3066.09 Instrumentation and Controls 16500 - 3 of 5 Revised January 2019

2.7. SIGNAL WIRING

A. Wiring from the control panel to sensors at the Sump Riser Building shall be
single- or multi-pair, #20 AWG stranded copper wire, twisted, 100 percent
aluminum foil individually shielded pairs, with outer jacket. Acceptable
Manufacturer: Belden No. 8761 (1-pair), No. 9402 (2-pair), No. 9874 (6-pair).

B. Wiring from control panel to control panel shall be multi-pair, #18 AWG
stranded copper wire, 100 percent aluminum foil individually shielded pairs,
with outer jacket. Acceptable Manufacturer: Belden No. 9774 (6-pair), Belden
No. 9776 (12-pair).

2.8 NETWORK WIRING

A. Network configuration and cabling will be performed by the SCADA system
supplier.

2.9 SCADA Controls

A. The Contractor shall coordinate closely with the Engineer and the City to
ensure a complete installation meeting the requirements listed below. The
SCADA system shall:

a. be consistent with the existing system used at the site and be integrated
into the existing telemetry system with a programmable logic controller
(PLC) and human-machine interface (HMI);

b. be capable of communication using Modbus protocol;

c. integrate into the existing telemetry system with fiber optic cable (or
alternative), specifically the HMI located in the Main Office; and

d. integrate with the existing auto-dialer alarm system or provide
equivalent alternative.

B. SCADA control panel shall be provided with a protective outer door and shall
be configured to provide access to all routinely used panel components.

PART 3 - EXECUTION
3.1 GENERAL
A. — Install components to allow access for maintenance. Care shall be taken in the
installation to ensure sufficient space is provided between instruments and

other equipment for ease of removal and servicing.

3.2 FLOW METERS, PUMP-DOWN SWITCHES, AND LEVEL SWITCHES

File No. 3066.09 Instrumentation and Controls 16500 - 4 of 5 Revised January 2019

3.3

All instrumentation shall be installed in accordance with the manufacturers’
installation requirements.

Flush chips and other debris from piping before installing flow meter.

Install flow meters to allow minimum 5 pipe diameters in straight pipe
upstream and 2 pipe diameters downstream from any valves or fittings. Verify
that this requirement has been met prior to installation of the flow meter.

Installation hardware shall include all details including special brackets and
mounting hardware that may be necessary to properly install the instruments.
Brackets and mounting hardware shall be stainless steel.

All mechanical fasteners such as bolts, nuts, screws, cinch anchors, clamps, etc.
shall be stainless steel, unless otherwise specified.

Install level switches, in accordance with distances indicated on the Drawings.
Switches shall be installed in a manner that does not interfere with
unobstructed vertical movement of the float. Switches shall be installed in
normally open position, rising of the float shall cause switch closure.

Install pump-down switches in secondary leachate sumps in accordance with
the operating range specified on the Drawings. Switch mounting hardware
shall be installed to provide a stable, consistent operating range.

SIGNAL WIRING

A.

All signal wiring shall be installed by a qualified electrician or technician, with
minimum 5 years of experience in controls wiring.

Make all wiring connections between the control panels and field
instrumentation. Install signal wiring conduit to right hand bottom of control
panels, power wiring to left hand bottom.

Install Class 1, Division 2 sealing glands at conduit penetrations through
building walls.

Install signal wiring from terminal to terminal with no intermediate splicing.
Tie signal wire ground to panel ground at control panel end only. Tie signal

wire ground for Pump Inhibit signal between panels to CP-1 only.

Loosely coil, securely cap and tape ends of unused signal wire pairs.

[END OF SECTION 16500]

P:\3000s\3066.09\Source Files\Type I] App\Specifications\ Division 16 Specifications\16500 Instrumentation and Controls.docx

File No. 3066.09 Instrumentation and Controls 16500 - 5 of 5 Revised January 2019

REPORT OF THE FINANCE COMMITTEE

MARCH 6, 2019

A meeting of the Finance Committee was held on Wednesday, March 6, 2019, at 7:00 p.m. in the Aldermanic
Chamber.

Mayor Jim Donchess, Chairman, presided.

Members of the Committee present: Alderman Michael B. O’Brien, Vice Chair
Alderwoman-at-Large Shoshanna Kelly
Alderman-at-Large Brandon Michael Laws
Alderman Patricia Klee
Alderman June M. Caron
Alderman Linda Harriott-Gathright

Also in Attendance: Dan Kooken, Purchasing Manager
John Griffin, CFO/Comptroller
Jeffrey Lafleur, Superintendent of Solid Waste
Mandeep Gill, Senior Staff Engineer
Amy Gill, Senior Staff Engineer

PUBLIC COMMENT - None
COMMUNICATIONS

From: Dan Kooken, Purchasing Manager
Re: Purchase of NPD Ammunition

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND AUTHORIZE THE PURCHASE
FROM EAGLE POINT GUN/TJ MORRIS & SON IN THE AMOUNT OF $77,924. FUNDS ARE AVAILABLE
IN DEPARTMENT 150, POLICE; AMMUNITION AND SUPPLIES ACCOUNT

ON THE QUESTION

Alderman Laws

You may not have the answer to this question it is just a matter of curiosity for me because | know last year we
authorized them to purchase new weapons and they changed caliber from 40 caliber to 9 millimeter. | was

wondering if there was a significant savings in the ammunition cost, year over year, as a result of that.

Dan Kooken, Purchasing Manager

It is sort of hard to tell, the actual spend on this resupply is bigger than the last one, even though the cost of the
ammunition is less, they may have bought more of it.

Alderman Laws
Alright.

MOTION CARRIED

Finance Committee - 3/6/2019 Page 2

From: Dan Kooken, Purchasing Manager
Re: Landfill Gas Expansion Project FY19

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND AWARD THE CONTRACT TO
SANBORN HEAD & ASSOCIATES, INC., INTHE AMOUNT OF $28,700. SOURCE OF FUNDING IS
DEPARTMENT 168, SOLID WASTE; BOND FUNDS

ON THE QUESTION

Mayor Donchess

Now Mr. Lafleur is here from the landfill. How about giving us a short explanation of this item?

Jeffrey Lafleur, Superintendent of Solid Waste

Absolutely. Superintendent Jeff Lafleur, Solid Waste. This part of the project is just for the engineering for the
design of our landfill gas expansion. This will help control odors, we do this yearly, every year. Right now | am
just going for the engineering part of it; probably within the next three months you'll see me coming in for the
actual expansion approvals.

Mayor Donchess
Discussion or questions?
MOTION CARRIED

From: Dan Kooken, Purchasing Manager
Re: Setback Barrier Wall Change Order #6

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND AUTHORIZE CHANGE ORDER
#6 TO THE CONTRACT WITH NORTHEAST EARTH MECHANICS, INC., IN THE AMOUNT OF $164,655.
FUNDS ARE AVAILABLE IN DEPARTMENT 168, SOLID WASTE; BOND FUNDS

ON THE QUESTION

Mayor Donchess

Do you want to give us an explanation on this?

Mr. Lafleur

Absolutely. As you have probably seen before this is my annual wall expansion for the setback barrier wall
from the waste to our residents. It is something that is permitted that needs to happen to separate the trash

from the residents. They should be able to start immediately, it helps us gain air space for where our trash is
being placed right now.

Mayor Donchess
Discussion?

MOTION CARRIED

Finance Committee - 3/6/2019 Page 3

From: Dan Kooken, Purchasing Manager
Re: 2019 Paving Program — Arterial Roadways Construction

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND, CONTINGENT UPON BOARD
OF ALDERMEN APPROVAL, AWARD THE CONTRACT TO BROX INDUSTRIES IN THE AMOUNT OF

$6,853,473. SOURCE OF FUNDING IS DEPARTMENT 160, ADMINISTRATION/ENGINEERING; BOND
AND TRUST FUNDS

ON THE QUESTION

Mayor Donchess

Now we have two Ms. Gills here, believe it or not, we have two engineers both named Ms. Gill. So | don’t
know which Ms. Gill is on this particular item. Thank you Ms. Gill.

Mandeep Gill, Senior Staff Engineer

Thank you. Hello everyone, my name is Mandeep Gill, | work in Public Works Engineering Department. So
this paving program for 2019, this one is for arterial and major roads such as Amherst Street, part of Kinsley
Street, East Hollis; those are some of the streets. We estimate it will be approximately 11 to 12 miles of major
roads that we plan on paving this year. Brox Industries is the lowest bidder.

Mayor Donchess

Discussion/questions?

Alderman O’Brien

Thank you. Ms. Gill | have heard from a lot of people that the digging up of let’s say Kinsley Street and
everything else which is one of the arterials that | think is included in this. | try to explain to people that there is
a difference between sewer upgrades and electrical upgrades and water upgrades we are trying to get. The
comments were that it was always being dug up last year. Can you just give us a very brief, to the people who

are just wondering, we are getting close to actually starting to pave them now and everything.

Mandeep Gill, Senior Staff Engineer

Absolutely, that’s a very good question. Kinsley Street is one of the oldest streets in the City of Nashua so the
infrastructure in terms of utilities is also old. For example Liberty, just because we are paving, Liberty and
Pennichuck are taking a lot of interest in upgrading their infrastructure because no one wants to dig in newly
paved streets. So they are aware of it that the City wants to pave Kinsley Street, so that’s why these utilities,
sewer, gas and water are upgrading their infrastructure. All of them cannot go into the street at the same time,
so they go one after another. That's why residents see that various utilities are digging into the street.

Alderman O’Brien
Follow up if | may Mr. Mayor. Yes because the common sense approach with us as a City, if we are investing
in paving the road, we want a moratorium of anything else, unless it is an acute emergency of digging up what

we just spent good money in resurfacing, correct? Is there a 5 year moratorium?

Mandeep Gill, Senior Staff Engineer

Yes there is a 5 year moratorium.

Finance Committee - 3/6/2019 Page 4
Alderman O’Brien
Thank you Mr. Mayor.

Alderman Harriott-Gathright

My question is, is this a new contractor, because don’t we already have a different contractor that is doing the
paving?

Mandeep Gill, Senior Staff Engineer

Every year we come up with a set of streets and we advertise it for bidding, so whoever, the way our contracts
are written we get the lowest bidder. So last year the lowest bidder was Newport Construction, this year we
have advertised a different set of streets so Brox is the lowest bidder for arterial roads.

Alderman Harriott-Gathright

So is the work pretty much the same as what the one that is doing it now? Is there a difference in the work?

Mandeep Gill, Senior Staff Engineer

No just a different set of streets, the work is pretty much the same.

Alderman Harriott-Gathright

Interesting.

Mayor Donchess

There are still streets left over from last year’s contract so come Spring you will see Newport out there doing
some of the streets left over from the previous year and then also Brox working on streets under the contract
we are about to award.

Alderman Klee

| want to comment or piggyback on what Alderman O’Brien had said. We had the same issue in Concord and |
understood that each different utility had to go in and do their job and the next one and | would get calls about
— they just dug it up, why are doing it again. And | did explain it to them that way so | am glad that it got
brought out here again and so on.

| Know that Newport did it this past year and they are going to continue. We have had Brox in the past correct
and there has been no exceptions or no issues with them correct? Because | like the lowest bidder | want to

save as much money as possible, | just want to make sure that we go with the lowest bidder but also the one

that is going to do a good job, but we have had them in the past?

Mandeep Gill, Senior Staff Engineer

Yes we have quality control, we set quality control rules and regulations that these contractors follow. We do

collect goals and we have plant inspections of the hot mix that comes in. Again we have a set of punch lists

when resident calls and complains to us, we share it with the contractor and they go back and fix it. So that’s
how we close.

Finance Committee - 3/6/2019 Page 5
Alderman Klee

Follow up. The reason | brought that up was because | know Beauview that one was a street that we’ve
redone a few times because the quality control of the material was kind of sketchy | think, and | hate to use that
word because | don’t exactly. But | know there was an issue with the material and so on. | just want to make
sure this is not the same contractor.

Mandeep Gill, Senior Staff Engineer

No the first time what we did on Beauview was preservation we micro-surfaced it, | agree the quality was an
issue but the second time when we went back we milled the old material and put new hot mix. This time we
did proper resurfacing, the first time it was preservation, just trying to get additional life out of the street.
Alderman Klee

It didn’t last; but | appreciate that thank you.

Mayor Donchess

Anyone else?

MOTION CARRIED

From: Dan Kooken, Purchasing Manager
Re: 2019 Paving Program — Local & Collector Roadways

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND, CONTINGENT UPON BOARD
OF ALDERMEN APPROVAL, AWARD THE CONTRACT TO SUNSHINE PAVING IN THE AMOUNT OF
$4,350,642. FUNDS ARE AVAILABLE IN DEPARTMENT 160, ADMINISTRATION/ENGINEERING; BOND

AND TRUST FUNDS
MOTION CARRIED

Mayor Donchess

Now are you here on the last item as well?
Mandeep Gill, Senior Staff Engineer

Yes HSI.

Mayor Donchess

But is Amy Gill here on the two in-between? Why don’t you just stay there and why doesn’t Ms. Amy Gill come
up.

Alderwoman Kelly

That’s not confusing at all.

Mayor Donchess

Maybe if we said Ms. Mandeep and Ms. Amy, maybe we’d be able to keep it straight more easily.

Finance Committee - 3/6/2019 Page 6

From: Dan Kooken, Purchasing Manager
Re: 2019 CIPP Lining Project

MOTION BY ALDERWOMAN KELLY TO ACCEPT, PLACE ON FILE AND, CONTINGENT UPON BOARD
OF ALDERMEN APPROVAL, AWARD THE CONTRACT TO KENYON PIPELINE INSPECTION, LLC, IN
THE AMOUNT OF $2,825,135. SOURCE OF FUNDING IS DEPARTMENT 169, WASTEWATER; BOND
FUNDS

ON THE QUESTION

Mayor Donchess

And if you could briefly explain what the lining does and how it differs from replacement of a sewer line and the
difference in cost that would be, I’m sure, enlightening.

Amy Gill, Senior Staff Engineer

Thank you. Ms. Amy Gill from Engineering. This project is the annual lining project that the City puts out to
address aging and deteriorating sewers. What the City is trying to do in order to use the most cost effective
approach in taking care of our aging and deteriorating mains is to use trenchless technology to put in in fact the
liner that goes inside the existing sewer that is in the ground as opposed to digging up the pipe and replacing

it. The lining entails a fabric that is impregnated with an epoxy material that, it’s like an inside out sock, you
push the inside out sock through the existing sewer in the ground and then they heat up that pipe and it
becomes a hardened structure around the pipe that is in the ground. Essentially there is no digging up of the
roadway at all, so therefore you don’t have any street repair, but you do get a sewer that is structurally sound.

Mayor Donchess

And the cost of this is significantly less than replacement?
Amy Gill, Senior Staff Engineer

Correct. When you replace of course you have to dig a trench that is typically, depending on the size of the
pipe, 8 to 10 feet wide and then you have to excavate and replace the fill and the asphalt and sidewalks and
curbing and other things that may be in the way of the sewer when you excavate. When we do do the lining
project we also do address the manholes. If they are aging as well, we do a lining of those usually with either
epoxy material or cement lining in order to keep the integrity of that as well.

Alderwoman Kelly

Thank you. Does it extend the life of the sewer before replacement and how long?
Amy Gill, Senior Staff Engineer

Typically Trenchless Technology has been around for 50 years. They say, because people are using it more
and more, they say 50 to 60 years but it wouldn’t be unusual to get more than that. They haven’t been in the
ground long enough to know.

Alderman Klee

Thank you. | know that in the City as you said we have the aging sewage and | know we have done some work
on some of them. | apologize, | was trying to look for this earlier today, how many miles are we planning on
doing, like with the streets, how many miles are we planning on doing and how many years are we planning on
doing it over? | would assume that we’ve got a long time, just because with our streets we are doing 11 miles
or something.

Finance Committee - 3/6/2019 Page 7

Amy Gill, Senior Staff Engineer

Correct. This year it is scheduled, with this lining project, to do approximately 4.2 miles of lining of the sewers
and again those are the older sewers which are the downtown area. Again we like to use the lining there the
trenchless technology because you don’t interfere with any of the utilities in the ground. We do work together
with the paving program, we always check the sewers before we do pave a street. If it is a suspect sewer,
then therefore we do try to do the maintenance on it.

Alderman Klee
Follow up? | know some of the streets that we worked on like for instance Concord Street and so on | know
there was some sewer work being done. Did you do the lining on those or did you actually ... | know you had

to remove a lot of the tops and so on of them because | got complaints they were on people’s lawns.

Amy Gill, Senior Staff Engineer

So with the older infrastructure in the City there was a certain period where for the manhole covers, there was
an area where the City of Nashua is unique and that they used triangular manhole covers.

Alderman Klee
Those are in my neighborhood.

Amy Gill, Senior Staff Engineer

Yes that’s right and those manholes are no longer compliant with the standards that are required for people to
get in and out of the manholes. Those are replaced during a lining project as well as the paving project. On
Concord Street you did have some very old sewers there. Prior to how we determine if we have to line or
excavate is we do a sewer assessment, generally with a cc, close circuit TV and we put those into the sewers
to examine it to see what type of rehabilitation would be necessary and on Concord Street some of the sewers
were very old but they were in excellent condition. So we didn’t have to do much rehabilitation with those.

Alderman Klee

Thank you.

Alderman O’Brien

Glad that you mentioned the triangular shapes being a former fire fighter the confined space in a rescue
situation totally bad. But it is interesting to note that we were probably the only City | think that had the
triangular so the novelty, | laugh every single time | drive over one. | would be interested in one, you know,

because they are a novelty. | think Public Works was selling them at one time.

Amy Gill, Senior Staff Engineer

Well in order in our efforts to recycle materials they are donated to the Nashua Historical Society, they take
quite a few of them and they are available for purchase usually through them, is my understanding. That's how
| Know it is typically done.

Alderman O’Brien

Very good.