Addendum 1.docx
DOCX document 328 KB Posted
- Attached to
- Effluent Cabinet Analyzer System project
- Solicitation number
- MMSD, 2025, Effluent Cabinet Analyzer System project
- Issued by
- Dane County, Madison City, Wisconsin
About this file
Addendum 1 is issued by the Madison Metropolitan Sewerage District (MMSD) for the Effluent Cabinet Analyzer System project, modifying the original Request for Bid document. The addendum, dated July 11th, 2025, updates the project scope and deliverables, specifically revising two key sections. The first modification allows for separate equipment to measure parameters (PO4, NH4, TSS, and pH) as long as they can be controlled by a universal controller, rather than requiring a single cabinet analyzer. The bid opening is scheduled for 11 a.m. on July 18th, 2025, with potential bidders required to acknowledge receipt and acceptance of the addendum by signing and submitting it with their bid.
The addendum also clarifies the installation environment requirements, maintaining the original specifications for system enclosures, temperature operation, and relative humidity. The analyzer system will be installed on the mezzanine of the effluent UV disinfection system, with effluent pumps delivering flow to a stilling well for measurements. The document emphasizes that the system does not need to be designed for outdoor operation and provides specific parameters for internal components, enclosure construction, and operational conditions. Bidders are advised that failure to include the signed addendum may result in their bid being considered non-responsive.
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Other files
| File | Type | Posted |
|---|---|---|
| Addendum 2.docx | DOCX document | |
| Competitive Proposals - Effluent Cabinet Analyzer System.docx | DOCX document |
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Text version
ADDENDUM NO. 1
Effluent Cabinet Analyzer System
Madison Metropolitan Sewerage District 1610 Moorland Road Madison, WI 53713 July 11th, 2025 All Potential Bidders:
The attached changes, additions, and/or deletions to the above contract documents are hereby made as fully and completely as if the same were fully set forth therein.
All bidders shall acknowledge receipt and acceptance of the Addendum by signing in the space provided below and submitting the signed Addendum with the bid. Bids submitted without this Addendum may be considered nonresponsive.
MADISON METROPOLITAN SEWERAGE DISTRICT
Any questions may be directed to:
Carly Amstadt Process and Research Engineer
RECEIPT ACKNOWLEDGED AND CONDITIONS AGREED TO THIS DAY OF
, 2020
BY BIDDER
ADDENDUM NO. 1
To the Bidding Documents Effluent Cabinet Analyzer System For the Madison Metropolitan Sewerage District Date: July 11th, 2025 Bid Opening: 11 a.m., July 18th, 2025
TO: ALL BIDDERS BIDDING ON THE ABOVE PROJECT:
This Addendum consists of four pages.
The following are revisions to the REQUEST FOR BID:
A. Project Scope and Deliverables Section (2.)
The following paragraph shall be deleted in its entirety:
2. Provide all system products and accessories necessary to measure the following parameters using a common controller.
a. Measurement parameters include:
i. PO4
ii. NH4
iii. TSS
iv. pH
b. The system must be capable of monitoring each parameter continuously or at least four (4) times per hour, depending on whether a sensor or wet chemistry analyzer is specified.
c. Expected measurement ranges for each parameter:
i. PO4: 0-1 mg/L
ii. NH4: 0-5 mg/L
iii. TSS: 2-20 mg/L
iv. pH: 7-8
And shall be replaced with:
2. Provide all system products and accessories necessary to measure the following parameters using a common controller.
a. Measurement parameters include:
i. PO4
ii. NH4
iii. TSS
iv. pH
b. The system must be capable of monitoring each parameter continuously or at least four (4) times per hour, depending on whether a sensor or wet chemistry analyzer is specified.
c. It is not a requirement that one singular cabinet analyzer measure each of these four parameters. A separate piece of equipment may be used if necessary as long as all components can be controlled using a universal controller.
d. Expected measurement ranges for each parameter:
i. PO4: 0-1 mg/L
ii. NH4: 0-5 mg/L
iii. TSS: 2-20 mg/L
iv. pH: 7-8
B. Project Scope and Deliverables Section (3.) General Installation Environment Requirements
The following paragraph shall be deleted in its entirety:
3. General Installation Environment Requirements.
e. System products do not have to be designed for operation outdoors in the climate conditions experienced at the facility since the intended location is inside on the mezzanine of the effluent UV disinfection system.
f. System enclosures shall be splash/drip resistant.
g. Internal components shall be capable of sustained operation in temperatures between 40°F to 104°F.
h. Construction of enclosures shall be powder-coated aluminum or PVC.
i. Sensor and analyzer components must be able to operate in effluent temperatures of 50° F to 75° F.
j. Relative humidity: less than or equal to 90% (yearly average).
And shall be replaced with:
3. General Installation Environment Requirements.
a. System products do not have to be designed for operation outdoors in the climate conditions experienced at the facility since the intended location is inside on the mezzanine of the effluent UV disinfection system.
b. System enclosures shall be splash/drip resistant.
c. Internal components shall be capable of sustained operation in temperatures between 40°F to 104°F.
d. Construction of enclosures shall be powder-coated aluminum or PVC.
e. Sensor and analyzer components must be able to operate in effluent temperatures of 50° F to 75° F.
f. Relative humidity: less than or equal to 90% (yearly average.
g. The effluent pumps will deliver flow to a stilling well which analyzer and/or probe equipment will take measurements from. This is an open well which is not pressurized.
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