Project Information

Bid Title

1840 - Addendum 2 - Mechanical Screen and Compactor Systems

Issuing Agency

City of Milford

Location

Connecticut

Published Date

Apr 1, 2026

Closing Date

Apr 9, 2026

Government Level

State & Local

Status

Closed

Ref. #

1840

Original Source

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Project Description

1840 - Addendum 2 - Mechanical Screen and Compactor Systems

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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

Commodity Codes

• NAICS 238220Plumbing, Heating, and Air-Conditioning Contractors

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