47PB0018B0004_Tab_10_Responses_to_Questions_dated_2018_09_17.pdf

Responses to Questions

Montpelier FB Chiller Replacement in Montpelier, VT

Solicitation Number: 47PB0018B0004

September 17, 2018

1. Question: Is there any suspect ACM in the insulation associated with the cooling towers, cooling tower duct insulation to be removed or the chilled water system?

Answer: The 2012 ACM report indicates that none of the insulation in the basement contains ACM or suspect ACM. The 2012 report will be made available to the successful contractor for their project records.

2. Question: What is the location of the temp chiller unit, if needed?

Answer: The temp chiller is to be located in the handicap parking space to the north of the 1000 gal UST tank in the north employee parking lot.

3. Question: Where can demolition debris be stored temporarily within the building?

Answer: There is limited storage within the storage from which the 96” x 30” duct is to be removed. There is limited storage within the two mechanical rooms.

4. Question: Will there be space for a dumpster in the employee parking lot?

Answer: Yes, space for one 40 YD dumpster will be made available. Please note, it is required that the dumpster be securely covered when it is not being actively used.

5. Question: What type of clearance is required for the work?

Answer: Specification Section 015930 defines the process for project personnel to receive a security clearance to work on the site. ALL project personnel that will require access to the interior of the federal building will require clearance, even those that will be escorted by stakeholders. Delivery drivers, crane operators etc., who do not require building access, are not required to be cleared.

6. Question: Is the Loading Dock Roof still under warranty? If so, who is the warranty holder?

Answer: The loading dock roof was installed in 2004. The installing contractor is

Palmieri Roofing from St. Johnsbury VT. The 20 year roofing membrane limited warranty from Firestone expires on 9/14/2024 and the 15 year roofing system limited warranty from Firestone expires on 9/14/2019.

7. Question: What is the Testing and Balance requirements?

Answer: The startup and testing should clearly demonstrate that the new pumps and motors are operating per the pump curve. The contractor needs to show that the pumps are providing the max flow rate of 167 gpm at 90’ of head. Balancing occurs at the loads, not at the chiller.

8. Question: Are the backup boilers and the district heating systems already on the BAS?

Answer: Yes, the backup boilers and the district heating systems are already ported to the

Niagara BAS. There is also a separate Trane BAS system that controls the AHU’s within the building. Both software programs reside on the same BAS PC. Both software programs must be available after the Niagara BAS has been upgraded to include the new chiller while removing the cooling towers.

9. Question: In section 23 09 00, 1.2 A. the last line mentions a BACnet compliant system down to the device level for the added VRF DDC controllers, were these previously added? I see no VRF controls in this pkg.

Answer: There are no added VRF DDC controllers. The comment should have stated that the VFD controls need to be BACNet compatible.