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.
