Amendment 0001- Attachment 4- Questions and Answers Site Visit.pdf

1. Please provide CFM or tonnage on all HVAC systems for both buildings and provide a unit schedule sheet from each building.

• Response: We’re working with 42 CES to obtain tonnage and schedule sheet.

2. Are bathroom exhaust and fans included in bid?

• Response: Yes, the cleaning of all bathroom exhaust fans and their associated ductwork is to be included in the bid.

3. Is outside air duct included on this bid?

• Response: Yes, the cleaning of outside air ducts is included in the scope of work.

4. Is the cleaning of air handlers to clean coils, fan blades, blower motor and housing included in the bid price?

• Response: Yes. A comprehensive cleaning of the air handlers, which includes coils, fan blades, blower motors, and housing, is required and should be included in the bid price.

5. Is there access above the high ceilings in all three auditoriums to get to duct system?

• Response: Contractors are responsible for verifying site conditions, including all access points, during their assessment. It is assumed access is available, but the contractor must determine the means and methods required.

6. Should offset scaffolding be included to set up and clean grills in the auditoriums?

• Response: The contractor is responsible for determining and providing all necessary equipment for safe access to perform the work, including any required scaffolding. Please note the laser measurements provided:

auditorium ceiling height is 18'3" from ground to diffuser bottom, and the first-floor lobby ceiling is 25'1" from floor to the grid ceiling.

7. Before-and-after photo documentation, contractor-furnished device.

• Response: Confirmed. The contractor is required to provide before-and-after photo documentation for all work performed, using their own equipment.

8. Confirmation that VAV terminal units and air handlers are included.

• Response: Confirmed. The cleaning of all VAV (Variable Air Volume) terminal units and associated air handlers is included in the scope of work.

9. Laser-verified auditorium ceiling heights.

• Response: Measurements taken were Auditoriums 1st floor, 18'3" (ground to diffuser bottom) and 1st-floor lobby, 25'1" (floor to grid ceiling).

10. Permission to create and seal service access openings, excluding classified spaces.

• Response: Permission is granted to create and properly seal service access openings as needed to perform the cleaning, in accordance with industry standards. All access panels must be clearly labeled and sealed upon completion. Any areas designated as "classified" or otherwise restricted will be identified prior to work commencement.

11. The rooms identified on site as excluded from work.

• Response: A definitive list of any rooms or areas excluded from the scope of work will be provided to the awarded contractor.

12. Can the auditorium grilles be removed and reinstalled during the performance period?

• Response: Yes, grilles should be removed for cleaning and then properly reinstalled.

13. If the grilles cannot be detached, are we allowed to clean the ductwork through the grilles due to limited access?

• Response: The preferred method is removal and reinstallation of grilles. If a grille cannot be removed without causing damage, you must notify the project manager to agree upon an alternative method, such as cleaning through the grille, before proceeding.

14. Does the "cleaning of the units" apply to the indoor units, outdoor units, or both?

• Response: The scope is focused on the indoor air pathway. "Cleaning of the units" refers to the indoor air handling units (AHUs) and all connected supply, return, and exhaust ductwork. Outdoor condenser units are not included in this scope.

15. Does the cleaning requirement include the interior of the air handler or only the connected ductwork?

• Response: The requirement includes a thorough cleaning of the interior of the air handler units as well as all connected ductwork.

16. The written scope specifies a 120-day completion period, yet the site discussion indicated a December timeline to coincide with the student break.

Please clarify the official period of performance.

• Response: The official period of performance is 120 days. However, the school’s preference is for the majority of the disruptive work to be completed during the student break in December and early January. Please structure your project schedule to maximize work during this period.

17. What advance notice is required if night or weekend work is necessary to meet the schedule?

• Response: A minimum of one-week’s advance notice is required for any planned night or weekend work. All such work must be coordinated with and approved by the site facilities manager.

18. May we be supplied with Bldg 694 (main) drawing M-1 (should be listed as First Floor Plan Section A - HVAC. They are missing from the attachment suite in Sam.

• Response: Yes, we will provide the missing M-1 drawing for Building 694.

19. Will NADCA certifications be required for the company and their technicians performing the work? i.e. NADCA company member letter and/or ASCS (Air Systems Cleaning Specialist) certification for technicians.

• Response: Yes. The bidding company must be a member of NADCA, as for the technicians performing the work on-site no certification is required.

20. Will Method 1 - Visual Inspection (NADCA ACR 2025, section 5.2) of porous and non-porous HVAC system components using before/after pictures be acceptable for cleanliness verification?

• Response: Yes, a visual inspection as described in NADCA ACR 2025, section 5.2, supplemented by before-and-after photographic evidence, will be the acceptable method for cleanliness verification.

21. Is the exhaust ductwork considered to be in scope for this project?

• Response: Yes, all general exhaust ductwork, including bathroom and mechanical room exhausts, is in scope.

22. The SOW specifically states return and supply side components of all AHUs.

Does this include OAU-1 in B694A?

• Response: Yes, if OAU-1 (Outside Air Unit) is part of the HVAC system that supplies air to the building occupants, its supply-side components are included in the scope of work.