1840 - Addendum 2 - Mechanical Screen and Compactor Systems

City of Milford, Connecticut
Office of the Purchasing Agent
70 West River Street - Milford, CT 06460
Tel 203-783-3225 - FAX 203-876-1960
E-mail: fbialka@milfordct.gov
ADDENDUM 2
Wednesday, April 1, 2026
Bid: 1840 - Installation of New Mechanical Screening and Washing Compactor Systems
Due: 3:00 p.m., Thursday, April 9, 2026
To: All prospective Bidders
Revised Bid Form - Rev. 1 follows after the End of Addendum 2.
Questions received by 4:00 PM March 18, 2026, and answers.
1Q - Vulcan option specifies a stair screen to be furnished. However other types of
screens have been specified for other two potential suppliers. Vulcan also designs and
manufactures the other two types of the screen; can Vulcan offer their version of those
screens for this bid.
A - Yes, Vulcan can offer their version of those screens for this bid.
2Q - We are only seeing design conditions listed for the Housatonic plant, how about for
Beaver Brook?
A - The design conditions for Beaver Brook are outlined on the attached Table 2-1
following the End of Addendum 2.
3Q - Paragraph III.C on Page ITB-27 says the screen will be capable of working with the
existing control panel and instrumentation. Paragraph V on Page ITB-30 has an electrical
controls specification that includes a NEMA 4X main panel and a NEMA 4X rated local
control station for unclassified areas plus a single, upstream level transducer for high
level screen start. Paragraph VIII is yet another controls specification which includes
NEMA 7 local control stations and a NEMA 12 main panel with (4) level sensors for
differential level control. These items will need to be clarified so that everyone is on the
same page with the equipment bids and the City gets what they want.
A - Provide a new NEMA 4X main panel and a NEMA 4X rated local control station for
unclassified areas plus a single, upstream level transducer for high level screen start.

4Q- Will the channels be isolated and cleaned by WWTP staff prior to the
commencement of the project?
A- No. The bypass channel gates are frozen shut and inoperable. City staff will set up a
bypass around the screenings channel. The bypass will obstruct the front double door
access to the building so the contractor will demolish the existing screen and compactor
and move the new screen and compactor into the building before the bypass is set up.
Once ready the bypass will be set up and the channels cleaned to allow the final
installation of the screen and compactor.
5Q- What if any expectations for the contractor during the bypass?
A- Once the bypass is started the contractor will be expected to be onsite every workday
to complete the installation of the screen and compactor as quickly as possible.
6Q- Will the supply of grinders be removed?
A- There will be no grinders at either Beaverbrook or Housatonic installations.
7Q- Confirm that all manufacturers are required to supply new control panels. Aquilitec
specification Sec. C states it can work with the existing control panels.
A- All control panels will be new.
8Q- In the bid form specification section, there are two fill in sheets titled unit pricing
sheets page BF-2 & BF-3. Do these sheets apply for this project? If so, how do we fill
out form?
A- Please use attached "Bid Proposal Form" included with this addendum. The new Bid
Form follows after the End of Addendum 2.
9Q- Please clarify that the drawings provided at the end of the bid package (H2S & BB-
2M) are for reference only, and the notes on the drawings do not apply to this bid.
A- The drawings at the end of the bid (dated 2006) are from the original installation of
the Vulkan step screen and are for reference only.
10Q- Page ITB-38 Control Panel. Who is responsible for providing an integration person
or company for integration of the new screen bar screen into the existing plant wide
SCADA system?
A- Contractor is responsible for integration with existing SCADA system.

11Q- Page ITB-39 & 40 Instrumentation in section I notes to provide CAT5 Ethernet
cable as shown on drawings per div. 16.
A- Existing SCADA connections can be used to connect to the new equipment.
12Q- There is no electrical drawing or Div. 16 specifications, please clarify.
A- Contractor is responsible for identifying existing electrical connections and
reconnecting to the new equipment.
13Q- Page ITB-40 The instrumentation and control system suppliers (section 13300 &
13400) There is no Div 13 in the specification and no suppliers, please clarify.
A- Disregard page ITB-40 paragraph K
14Q- At the pre bid meeting the plant operators told the contractors present at the
meeting that the slide gates that isolate the channel where the existing bar screen is
located do not work at Housatonic WWTP. Is it the contractor's responsibility to shut
down the flow in the channels?
A- See answer to question #4 & #5 above.
All else remains the same.
End of Addendum 2

ITB # 1840
Mechanical Screen and Compactor Systems:
(1) City of Milford Housatonic WWTP
(2) Beaver Brook WWTP
BID FORM - Rev. 1
City of Milford
Purchasing Department
70 West River Street
Milford, CT 0660
We wish to submit our Bid on the above referenced ITB. We have enclosed our Bid surety in the
amount of 5% of our Bid. We have read and understand your specifications, Invitation to Bid,
General Information to Bidders, and are submitting our Bid in full compliance with all of the stated
conditions.
Following award, we will provide the required Certificate of Insurance from the following
insurance company:________________________________________.
We propose the following bid for the below proposed project:
City of Milford Housatonic WWTP
Mechanical Screen and Compactor Systems
Demolition and disposal of existing Vulcan step screen, washer compactor and
control panel:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Vulcan Step Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
BF-1

Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
And/or Alternate 1
Duperon Mechanical Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
And/or Alternate 2
Aqualitec Mechanical Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
BF-2

(Written Out)
Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
City of Milford Beaver Brook WWTP
Mechanical Screen and Compactor Systems
Demolition and disposal of existing Vulcan step screen, washer compactor
and control panel:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Vulcan Step Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
BF-3

Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
And/or Alternate 1
Duperon Mechanical Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
BF-4

And/or Alternate 2
Aqualitec Mechanical Screen, Washer and Controls:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Installation:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Shipping:
$ ________________________________ (figures)
________________________________________________________________
(Written Out)
Project(s) will begin __________days after receipt of Notice to Proceed and be completed by
____________________________(date).
Addenda:
The following Addenda for this contract were received:
Number Date
_______ __________
_______ __________
_______ __________
[ ] Check here if exceptions to the specifications are taken. Outline same in an attachment to
the back of this form.
BF-5

The undersigned bidder certifies that his bid is made independently and without collusion,
agreement, understanding, or planned course of action with any other bidder and that the
contents of his bid shall not be disclosed to anyone other than his employees, agents, or sureties
prior to the official bid opening.
Sign Name __________________________ Date _______________________________
Print Name __________________________ Tel ________________________________
Company Name ______________________ FAX _______________________________
Address ____________________________ Email ______________________________
____________________________ EIN _______________________________
The following documents required to be submitted with this Bid page are:
1) Non-Collusive Affidavit
2) Affirmative Action Statement
3) W-9 Form
4) Certificate of Insurance, together with endorsements, for the following will be required
upon award of contract and must remain in effect during the term of the contract
a) Identify the City of Milford as a certificate holder
b) Name the City of Milford, its Governing Board, Official, Agents and Employees as
an additional insured.
c) Include the language "on a primary, non-contributory basis" and "waiver of
subrogation applies in favor of the City of Milford and all other required parties."
d) Workers Compensation - Statutory Limits
This Bid Form, Rev. 1, must be used when submitting a bid.
End of Bid Form - Rev.1
BF-6