2017-12-13 THE MATTABASSETT DISTRICT Memorandum
Date: December 18, 2017 Subject: Engineering Committee Meeting
Minutes December 13, 2017
Engineering Committee and
To: Board of Directors From: Arthur G. Simonian, Executive
Director
Engineering Committee
December 13, 2017 Meeting Minutes
The Engineering Committee met Wednesday, December 13, 2017 at The District
Offices at 245 Main Street, Cromwell, Connecticut.
Chairman John Dunham called the meeting to order at 5:32 PM. In addition to
the Chair, present were Committee Members - Bonnie Anderson, Robert
Argazzi, Tom Serra, David Bauer and Paul Catanzaro. There was a quorum. Also
present were Art Simonian - Executive Director and Michelle Ryan - District
Engineer.
Following is a summary of the December 13th Engineering Meeting:
1) Odor Control Repairs and Carbon Change Out — The cage that contains
the carbon in our odor control system has delaminated and requires
replacement. We are pursuing the warranty coverage as this equipment is
defective or was damaged during installation. This replacement and carbon
change out will happen relatively soon. Going forward the carbon will be
changed every two years on this specific odor control equipment.
2) Structural Improvements needed for the Primary Tank Tunnels —
Between the primary tanks and the dewatering building, there is a 14 %2 foot
wide concrete tunnel with 12" thick concrete walls. On the top of the tunnel
the outside is exposed to weather elements, since the 1960's which has
corroded and damaged the concrete. DTC Consulting is in the process of
giving us a proposal for design and cost estimates. The work encompasses
over 3,000 square feet.
3) Primary Tanks Flight Drive Replacements -- The chain conveyor system
consists of paddles that moves the primary sludge into a collection trough.
The drives at the top of the tank are older and require replacement. We have
one conveyor system per tank and four tanks in total. We will replace one
system each year until all four are complete. This new system will come from
our supplier with the help of our maintenance department for installation.
4) Pneumatic Sand Addition System for Incinerator - A bucket elevator in the
incinerator room carries sand from the bottom of the incinerator wing and
loads sand monthly into the conveyor system, to maintain a 60" layer of sand
inside the incinerator. The bucket elevator conveyor system is extremely
slow, hazardous, outdated and inefficient. This system allows for dangerous
THE MATTABASSETT DISTRICT Memorandum
Engineering Committee Meeting Minutes
December 18,2017
Page 2 of 2
airborne silica sand and does not comply with newly updated OSHA
requirements. A pressure injection system from a vendor/contractor will
allow for maximum efficiency and safety. Our District Engineer is preparing
bid documents for advertising in January.
5) Energy Performance Contract Project — Ameresco was on site for two and
a half days, during this time they conducted a full evaluation of all the plants
lighting systems. They will soon be proposing a plan to save Mattabassett
energy and costs.
6) Trunk Sewer Video Inspection and Lining Project — The 8.5-mile trunk
line is over 50 years old and should be inspected and possibly coated with
cured-in-place liner. This work is in our Capital Improvement Plan.
7) Ash Lagoon Impervious Liner and Embankment Reconstruction — A new
liner is needed at our Ash Lagoon site. In portions of the Ash Lagoon clay
liner is completely missing, in other sections it is very thin (less than 6"). A
new clay layer or liner will prevent treated effluent and ash from seeping
into the groundwater. We are currently waiting on a quote from Fuss and
O'Neill for design.
8) Outfall Cleaning Project — The cleaning of the outfall will be done between
the months of November to March as approved in our CTDEEP 5 year outfall
permit.
Adjournment:
Mrs. Anderson moved, Mr. Catanzaro seconded, and the committee
approved unanimously to adjourn at 6:50 PM.
RECEIVED FOR RECORD, BERLIN TOWN CLERK
Kathryn J.Wall
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