1305M326Q0401_Attachment_3_-_RFI_Tracker_-_17_Aug_26_0001.xlsx

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Milford (CT) Lab Sea Water Pump House Renovation
Solicitation number
1305M326Q0401
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This is a Requests for Information (RFI) Tracker documenting 30 inquiries submitted by contractors during the solicitation phase for the Milford Lab Sea Water Pump House Renovation project (RFQ Number: 1305M326Q0401). All RFIs were received on 11-12 August 2026, with client responses provided on 13 August 2026 and forwarded to contractors on 17-18 August 2026.

Key clarifications from the RFI responses address scope, schedule, technical specifications, and compliance requirements. The project period was extended from 60 to 90 calendar days after Notice to Proceed to accommodate material lead times for VFD and pump procurement. Critical technical requirements confirmed include: NEMA 4 enclosures (not NEMA 1 or NEMA 12) must be installed in the pump house; two spare impellers are required for delivery; existing conduit between the distribution panel and disconnects may be reused; local keypad control at each VFD constitutes the complete control scope with no BMS/SCADA integration required; current transducers are for local monitoring only, with an alternative using VFD built-in 4-20mA analog output signals approved; flexible conduit whips are acceptable for vibration isolation; and megger testing, insulation resistance testing, and motor rotation verification are required for electrical turnover. Administrative clarifications include: no project-specific insurance requirements; no as-built documentation required beyond proper wire labeling; the 5-year comprehensive warranty applies only to the pump assembly; Davis-Bacon wage determinations apply; COR approval is required for components without "or equal" clauses; and contractors must ensure proper NAICS codes are registered in SAM.gov. The facility operates on generator backup power; however, manual transfer switches are no longer required for the new system.

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Other files

File Type Posted
Sol_1305M326Q0401_Amd_0001.pdf PDF
1305M326Q0401_Attachment_1_-_Statement_of_Work_-_17_Aug_26_0001.pdf PDF
Sol_1305M326Q0401.pdf PDF
1305M326Q0401_Attachment_3_-_RFI_Tracker_-_4_Aug_26.xlsx XLSX spreadsheet
1305M326Q0401_Attachment_2_-_Davis_Bacon_WD_CT20260023_-_18_May_26.pdf PDF
1305M326Q0401_Attachment_4_-_Past-Performance-Questionnaire.docx DOCX document
1305M326Q0401_Attachment_1_-_Statement_of_Work_-_4_Aug_26.pdf PDF

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Sheet1

Requests For Information (RFIs) / Inquiries
Project Title:Milford Lab Sea Water Pump House Renovation
RFQ Number:1305M326Q0401
RFI #Date Recv'dRFIDate Sent to ClientClient/SME ResponseResponse DateDate sent to Ktrs
111-Aug-26Please verify what is required for delivery to the site of back-up components (spare parts).13-Aug-26Two spare impellers, One for each pump model. Highlighted
in section 1.2 scope bullet #517-Aug-2618-Aug-26
211-Aug-26Please confirm that the (4) existing pumps may be shut down simultaneously for 2 weeks to complete the project.13-Aug-26Confirmed. Pumps may be shut down for two weeks17-Aug-2618-Aug-26
311-Aug-26Please advise if there is a spec on the spring isolators or an approved vendor.13-Aug-26There are no specs on the spring isolators. Any spring
isolators or anti vibration pads may be used.17-Aug-2618-Aug-26
411-Aug-26Please confirm the (4) new VFD units can be installed in the adjacent room and utilize Nema 1 enclosures.13-Aug-26No, Nema 4 enclosures must be used in the pump

house where pumps are located. We have

the adjacent room cannot be utilized.17-Aug-2618-Aug-26
511-Aug-26Please confirm if the VFD and Pump Procurement times are included within the 60 Calendar Days to complete the job after the NTP.13-Aug-26Yes, I will chage to 90 calender days to accomodate

for material lead times. Section 4.2 periodof performance

bullet #2.17-Aug-2618-Aug-26
611-Aug-26Please advise if there are project specific insurance requirements.13-Aug-26No, There are no insurance requirments.17-Aug-2618-Aug-26
711-Aug-26Is existing conduit/raceway between the panel and disconnect locations to be reused, or is full raceway replacement expected given coastal corrosion exposure?13-Aug-26The existing codnduit between the distribution panel
and the disconnects in the pump house can be reused.17-Aug-2618-Aug-26
811-Aug-26Is any BMS/SCADA/remote monitoring integration required, or is local keypad control at each VFD the complete extent of control scope?13-Aug-26Local keypad control at each VFD is the complete extent of the control scope.17-Aug-2618-Aug-26
911-Aug-26Are the 4 new ACUAMP current transducers to be wired into any protective/trip logic, or purely for local monitoring/display as stated?13-Aug-26Purely for local monitoring/ displays as stated.17-Aug-2618-Aug-26
1011-Aug-26What is the required grounding/bonding method for the new NEMA 4X non-metallic enclosures and disconnects?13-Aug-26Can be bonded/grounded at the main panel located in
in the same building.17-Aug-2618-Aug-26
1111-Aug-26Are the 4 new Kobold current transducers to be wired into any protective/trip logic, or purely for local monitoring/display as stated?13-Aug-26Purely for local monitoring/ displays as stated.17-Aug-2618-Aug-26
1211-Aug-26During the site visit the option of locating the electrical controls and VFDs in the SHOP area VS the pump room was brought up. This location would allow for the installation of NEMA 12 vs NEMA 4x electrical components and VFDs. The addition of a dust collection system in the SHOP area would help to mitigate the saw dust issue.13-Aug-26This is no longer an option. The shop area can no longer
be utilized.17-Aug-2618-Aug-26
1311-Aug-26Are as-built electrical drawings, panel schedules, or one-line diagrams available for the existing system?13-Aug-26No17-Aug-2618-Aug-26
1411-Aug-26Is a hazardous materials survey (asbestos/lead) available for the legacy wiring, insulation, and enclosures to be demolished?13-Aug-26No17-Aug-2618-Aug-26
1511-Aug-26Is there an existing control logic diagram or relay schematic for the current relay/button enclosures?13-Aug-26No17-Aug-2618-Aug-26
1611-Aug-26What as-built documentation (updated panel schedules, wiring diagrams) is required at project closeout?13-Aug-26No as-built documentation is required. Just make sure all
wiring is correctly labled.17-Aug-2618-Aug-26
1711-Aug-26What is the intended sequencing between pump/pad mounting (mechanical) and electrical rough-in (disconnects, trough, conduit)?13-Aug-26Mechanical and electrical rough-in disconnects, trough,
nema 4 enclosures, wiring and plumbing at the pumps.17-Aug-2618-Aug-26
1811-Aug-26Who is responsible for providing the external seal water supply line to the pump water jackets, and where is the tie-in point relative to planned electrical conduit routing?13-Aug-26The contactor is responsilbe for providing seal water supply.
The tie in point is located next to the existing pumps.17-Aug-2618-Aug-26
1911-Aug-26Since pumps are mounted on spring isolators, is flexible conduit/whip connection at motor terminations an acceptable and expected method, or is a different vibration-isolation detail required?13-Aug-26Yes, flexible coduit whips such as seal-tite are acceptable17-Aug-2618-Aug-26
2011-Aug-26For any electrical work requiring core drilling near panel or trough supports, who submits the 72-hour advance notice to COR — electrical contractor or GC?13-Aug-26Either would be acceptable.17-Aug-2618-Aug-26
2111-Aug-26Given the 10/1/26–12/1/26 window (or 60 days from NTP) and standard 7:00 AM–3:30 PM hours, is any panel shutdown/outage work anticipated to require after-hours or weekend approval?13-Aug-26Yes, If needed.17-Aug-2618-Aug-26
2211-Aug-26What is the lead time for personnel security/background clearance to access the restricted-access laboratory areas?13-Aug-26Unknown17-Aug-2618-Aug-26
2311-Aug-26For electrical components without an explicit 'or equal' clause (e.g., THHN conductor manufacturer, grounding hardware), is COR approval required prior to procurement under the general Material Approval requirement (1.1)?13-Aug-26Yes17-Aug-2618-Aug-26
2411-Aug-26Which labor classifications under Davis-Bacon Wage Determination MA20260001 apply to controls/instrumentation wiring (sensors, CTs) versus standard electrical installation?13-Aug-26Unknown17-Aug-2618-Aug-26
2511-Aug-26Does the 5-year comprehensive warranty on labor and materials apply distinctly to the electrical scope (breakers, VFDs, disconnects, wiring), or only to the pump assembly?13-Aug-26Only the pump assembly.17-Aug-2618-Aug-26
2611-Aug-26What acceptance testing is required for electrical turnover (e.g., insulation resistance/megger testing, motor rotation verification, VFD commissioning report)?13-Aug-26Megger testing, isulation resistance and motor rotation
verification.17-Aug-2618-Aug-26
2711-Aug-26Please confirm the requirement of NAICS 238220. Would it be acceptable for a certified SBE under NAICS 237110 to submit a bid as the General Contractor for this project?13-Aug-26They recently changed SAM.gov and we can't see any NAICS on your profile that you didn't add. Having said that, please ensure the NAICS for this project is added to your SAM.gov profile.17-Aug-2618-Aug-26
2812-Aug-26Is the existing Main Power Panel on a generator back-up?
The existing pumps have manual transfer switches labeled NORMAL POWER / EMERGENCY POWER. It is not clear if these are still required.13-Aug-26Yes, The existing main power panel is on generator power.
Manual transfer switches are no longer needed.17-Aug-2618-Aug-26
2912-Aug-26Will the new system require generator back-up manual transfer switches?13-Aug-26No17-Aug-2618-Aug-26
3012-Aug-26The specified installation method for the ACUAMP 3ACT current transducers requires removing the outer jacket and shielding from the VFD output cables so the individual conductors can pass through the transducer. This installation method compromises the integrity of the cable shielding, which is intended to suppress electrical noise generated by the VFD output.

Would the Engineer accept, as an alternative, use of the built-in 4-20mA analog output signal from each VFD (representing motor output current) to transmit the motor current signal to the SCADA system, in lieu of installing the ACUAMP 3ACT current transducers on the shielded VFD output conductors?

Please advise whether this alternative method is acceptable, or whether the original CT-based method must be maintained — and if so, how the Engineer would like the shielding integrity addressed at the point of interruption. 13-Aug-26 The alternative method is acceptable. 17-Aug-26 18-Aug-26

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