Search

Special Board of Aldermen 10-14-2021 Page 22
Alderman Schmidt

Thank you. Can you talk a little bit about lining of the old sewerage pipes instead of replacing?

Dave Boucher, Wastewater Superintendent

Sure. So that's part of the CMOM program that the city is undertaking and a lot of that starts off with an inventory of all
the city's assets with respect to its sewer infrastructure through TV tapes and cleaning of those lines. Then what we do
there, similar to the paving program, is we score the pipe. So we're able to identify cracks and, you know, breakages
and basically it allows you to look at the pipe. Is the pipe good enough to be salvaged for a liner or it is it too far gone
and need to be replaced? So it turns out to be a mixture. We try to line as many pipes as possible because look at the
benefit you get for lining. You’re not digging up the street. You're salvaging the existing infrastructure and you're putting
essentially almost what winds up to be a hard plastic liner in your pipe that's going to last, you Know, years on years on.
So does that answer your question?

Alderman Schmidt

Yes, follow up. So that's one of the problems we see between paving and all of the underground work that needs to be
done because we count on you to do that art before we can even get to the paving part.

Unidentified Male Speaker

Certainly and, you know, we've done CMOM programs in Manchester. The coordination between paving and trying to
do is particularly if it's a pipe replacement, the coordination with the paving program has to be kind of intertwined.
Because as Dan said, these cities also have five year moratoriums, you know, so if you're paving Main Street but you got
a pipe replacement on Main Street, you better know about or its five years down the road before you're going to be able
to do that.

Alderman Schmidt

And so some areas of our city are very old as far as the pipes that are there. Some of the streets downtown are simply
being patched, and replaced, and fixed because of this weight that we need to do. Is that right?

Dan Hudson, City Engineer

Sure. Engineer Hudson. Yes, that's true. We do differ paving, do some Band Aid type treatments on some roads that
for whatever reason can't do the sewer at that time and need to do it later. But as noted, we are doing as much lining as
we can. We find it about 20 times less expensive than doing the full dig replacement and much less disruptive. So we
have prioritized the system. We're looking at the older pipes of the system and pipe materials. Pipe materials have
changed over time. So we're focusing our effort on the ones that we've seen historically we’ve had more problems with
so we have a good effort and it is tightly coordinated with the paving program. As Engineer Saunders said earlier, ideally
the paving should be the last thing but that's not always possible but that is what we strive for.

Alderman Schmidt
Great. Thanks so much.
Alderman Klee

Thank you, again. | guess | have a question as far as the scoring is concerned. Do you like the paving project - don't
always necessarily do the worst ones right away. You try to get to those ones that are in the middle before they
completely break down. So for instance, | know Orange Street | think they went into do a lining when they got in. They
realized it was a lot worse and they had to, | think, do a lot more replacement or at least some of that to that extent. It
took longer than was expected but for the most part when you're doing this scoring, again like the paving project, do you
try to get in and take care of those before they get so bad versus going in and prioritizing those that are already bad?

Dan Hudson, City Engineer

Yeah, we do - it's a little bit different I'd say because, you know, for roads in bad shape is still passable, still usable but if
a sewer pipe collapses, you know, has a major issue, it's not usable and creates quite a problem. So it's a little bit
different. As we're doing the TV work when we find collapse pipes, we try to fix those as quickly as we can. But then we

Special Board of Aldermen 10-14-2021 Page 23
are trying to line pipes and line as many as we can to catch them before we have that type of an issue.
Alderman Klee

Just a quick follow up. | just lost my train of thought sorry about — age. | guess the question that | have is we talked
about those that could possibly collapse and so on, do we know when something like that happens? Does it create a
sinkhole? How do you know that it’s collapsed or are you pretty well versed that this one is on its way out?

Dan Hudson, City Engineer

Well through the TV work, we can see what the issue is. Yeah lots of times we don't know there is an issue in a pipe and
a sinkhole leads you out there's something going on here. Sometimes maybe that's a drainage issue or other things but
sometimes it's a sewer issue. So if we respond to one of those conditions, we start digging and find and address
whatever the problem may be. But we are finding problems as we do the TV work so there's a reason we're doing it and
that's why we want to find pipes in good condition but we also want to find the ones that aren't in good condition so that
we can address those.

Alderman Klee

Just one quick other comment. Being the Ward Alderman of one of the oldest sections of this city - the north end French
Hill area, | do see that you go in and do work. Again, it seems like it’s extended. You dig up one part and then come
back a little bit longer and so on. Is that because when you get in there you realize you need a part that isn't - in other
words, you can't finish it all at once. It seems like Manchester Street seemed to take a little bit longer and I'm pretty sure
that was a sewage issue as well - where Mount Pleasant and all that area is. So was that the kind of case that you
would have? Orange Street seemed to take a long time as well.

Dan Hudson, City Engineer

Yeah it does take a long time. | mean you're working in and around the utilities. Paving or paving on top of them but
here with the sewer work, you’re digging right in amongst them, right. So it has to be slow and methodical work so that
you don't do damage to those other facilities. Lots of times it's challenging because a lot of the oldest sections city we
don't have records. We don't know where a house’s sewer connection connects to the sewer main sometimes or where
it goes, you know, from the sewer main to their house. Sometimes they have multiple pipes and we don't know that so.
You never know what you're gonna find until you start digging but you run into challenges, and you deal with them, and
so sometimes things are evolving. You might go on with a plan and sometimes the plan has to change so that may be
why we have to come back sometime to do different things.

Alderman Klee

So at least digging up helps you remap things later on. Thank you.

Alderwoman Lu

Thank you. Just a couple of really quick questions if | could. CSO is that combined sewer overflow? Its sewer and

stormwater? Alright. It’s when we combine the stormwater into the sewer? Okay. So when that is actually sent out into
the river, there's sewage put into the river at that point?

Unidentified Male Speaker
Very diluted.

Alderwoman Lu

Did | hear what?

Lisa Fauteux, Public Works Director

Very diluted.

Special Board of Aldermen 10-14-2021 Page 24
Alderwoman Lu

Did we have more CSOs before and then we reduce them?

Unidentified Male Speaker

Yes.

Alderwoman Lu

Okay.

Unidentified Male Speaker

Significantly.

Alderwoman Lu

Okay. How did we reduce them did we divert the stormwater somewhere else?

Unidentified Male Speaker

So that the city undertook a number of wastewater infrastructure projects as part of their original long-term control plan
that included a wet weather facility at its plant which takes a significant amount of wet weather and treats it. Also a
screening disinfection facility on the Merrimack River for CSOs 5 and 6 which also has up to a million gallons of storage
and anything over that will overflow into the Merrimack but it is disinfected and screened. We did a number of fine tuning
of the system by increasing capacity of pipes to get more flow to the plant. That's pretty significant.

Alderwoman Lu

And | may have asked this before but did any of it go to say like, Salmon Brook?

Unidentified Male Speaker

Salmon Brook - | think that CSO was closed. That’s CSO 2.

Unidentified Male Speaker

Yeah. No, we haven't had any discharge.

Unidentified Male Speaker

No, not the Salmon Brook.
Alderwoman Lu

Okay and just one other question | had is CMOM. Is that an acronym for a couple of different things?

Unidentified Male Speaker

Yes. It's an acronym for capacity management, operation, and maintenance. It includes basically, like | said before,
CMOM program for your collection system will include inventory and TVing all the assets, cleaning them, scoring the
pipes, and then basically determining which ones can be lined and which one can be replaced. You do that as you go
through the entire city. So you're able to, you know, basically make improvements on a year by year basis. You know, it
doesn't happen overnight. If you think about how many miles of sewer you need to TV, inspect, score, and then have a
capital improvement project to now to correct those deficiencies based on the number of miles of pipe that you have. So
it's a long-term process but as you get into it and you go through it, then you become more and similar to the paving
program in a maintenance mode as opposed to a reactive mode. So then you're keeping up with your system. It's
anticipated that, you know, sure pipes age as you go along and they'll need to be fixed, but as you go through the
program once, which is your biggest kind of expenditures because you haven't done anything of that significant
magnitude, once you've gone through all your pipes, it becomes significantly less expensive because you've fixed all

Special Board of Aldermen 10-14-2021 Page 25
those problems and you've kept up with it.
Alderwoman Lu

Okay, thank you. Just a follow up. So do we sometimes use that phrase as shorthand when we talk about actually
spraying that stuff on the inside of the lines to preserve them? | thought they called that CMOM?

Unidentified Male Speaker

You mean like a liner? Well that’s CIPP. That's secured in place pipeline.
Alderwoman Lu

| was just mixing up the two.

Unidentified Male Speaker

Yeah it’s a different acronym.

Alderwoman Lu

Okay, thank you. They both start with “C”. Thank you.
Alderman Caron

Yes, thank you. So since this facility is in Ward 7, | first want to thank you for taking the time to in the last four or five
years, doing all this maintenance and catching up because you were lacking on some of that. | know it was a lot of
money but as the Mayor said earlier, people rely on the wastewater treatment plant. But if it goes down, it doesn't just
affect one or two people, it affects the city as a whole. So | think this is really a good way to proceed and | like that idea
that you're going to review this every year annually — rates. Doing increases can be very hard and difficult specially for
seniors but if you set it up So that the increments are a little bit lower over a long period of time, | think people will accept
that as well. | probably could have answered my own question but with all these regulations that EPA sends down, do
they ever send you any money?

Unidentified Male Speaker
No.

Alderman Caron

You know it's wonderful to make these mandates and | understand that, you know, because you want a cleaner
environment and you don't want this going into why rivers and streams but people also need to understand that these
communities need help in being able to do this work. So | think that's great. In talking about infrastructure, Harvard
Street had a major breakdown. | think it was a year or so ago and that street was closed until you could get it because
you didn't realize how bad that pipe was over there. So kudos to you. | don't envy your job. I've been there plenty of
times but | think it's important for the community to Know that this is very important and vital like the Police and Fire
Department to our community. So whatever you need, people have to understand that it's not frivolous. It's very
important to the community but thank you so much. | appreciate it.

President Wilshire

Anyone else? Seeing no one, I’d like to thank you all for your presentation this evening. Thank you Director Fauteux for
informing the Board of paving and the wastewater.

Lisa Fauteux, Public Works Director
Thank you for having us.
President Wilshire

Yup, you bet. Okay, thank you all for being here. We really appreciate it. All set Mayor?

Special Board of Aldermen 10-14-2021 Page 26

Mayor Donchess

Thank you, Madam President, yes.

President Wilshire

Thank you very much.

Alderman Dowd

Yeah and the presentations will become part of the record of the meeting.
ADJOURNMENT

MOTION BY ALDERMAN DOWD THAT THE OCTOBER 14, 2021, SPECIAL MEETING OF THE BOARD OF
ALDERMEN BE ADJOURNED, BY ROLL CALL

A viva voce roll call was taken to adjourn the Special Board of Aldermen meeting which resulted as follows:
Yea: Alderman Klee, Alderwoman Kelly, Alderman Dowd, Alderman Caron,
Alderman Clemons, Alderman Tencza, Alderwoman Lu, Alderman Jette,
Alderman Schmidt, Alderman Cleaver, Alderman Harriott-Gathright,
Alderman Wilshire 12
Nay: Alderman Lopez, 0
MOTION CARRIED

The meeting was declared adjourned at 9:03 p.m.

Attest: Susan Lovering, City Clerk

t Upe
James Donch

Lisa Faute ux - Di

)
On lene
Daniel H
Mark Sa

m Scarpa

illia

A

MULTI-YEAR PAVING PROJECT UPDATE

Agenda

ane ae

Paving History
Review Pavement Network & Management Methodology
Preservation Treatments and Paving Operation

Conclusions

Ww
a
¢
fa)
a
=}
a
Oo
Ww
a
le}
[ag
a
o)
2
od
¢
a
[ag
¢
Ww
a
a
a
=}
=

Paving History

In the years prior to 2017, the City paved 6 to 8
miles annually.

The City embarked on a $75 Million, 10 year
paving plan. The first half of the program was
funded (R-17-092).

The first 5 years resurfaced ~113 miles of
roadways

Average PCI increased from 67.5 to 78.4

Legend

same PavingProgram_2021

ae Paving History 2016 -2020

= y AT = =

a A 7) a
cA 45S \
oe pit Aneel pee, (e) OpenStreetfftap contributors. and’ nth }

Ww
a
¢
fa)
a
=}
a
Oo
Ww
7
le}
[ag
a
o)
2
od
¢
a
[ag
¢
Ww
a
a
a
=}
=

Pavement Network
& Management

¢ The City currently maintains 311 publicly accepted
miles of roadway

¢ Atleast 33% of the City’s network (~100 miles) is
reinspected annually

¢ All roadways in the City have a condition score
called a PCI (Pavement Condition Index)

¢ PCl’s are a0 to 100 score which are calculated
based on observed pavement distresses

¢ Analysis of condition, modeled deterioration,
needed repairs, and funding needs are updated
annually

Legend

— 20119
— 2020
ms 2071

3 —
| y TEN,
| ESS Son
Wg» ea
VOW) an er
Aik RSS EON Vict ZA)
ES SANG 22-8
| Sais vv oe
PED i) sh
) 4 G Q, tf aN \
mM % SAGE DN
% EE Ueto
: hss =

Pavement Data Collection by Year

Ww
a
¢
fa)
a
=}
a
Oo
Ww
7
le}
[ag
a
o)
2
od
¢
a
[ag
¢
Ww
a
a
a
=}
=

Treatment Band Examples

Danforth Road (D.W. Highway to Dead End)

West Hollis Ste et (Marina Drive - City Lim it)

Timbenine Drive (CollierC our to Bracken woods Drive)

eda
MAINTENANCE

ROUTINE
MAINTENANCE

DO
NOTHING

¢ The goal of Pavement
Management is to optimally
repair a roadway before its
repair cost significantly
increases.

¢ Treatment band guidelines
help determine which repair
treatment a roadway should
get based on its PCI.

a elon te v1 ie ; BASE
IMPROVEMENT REHABILITATION