HC102823R0065 HVAC System Cleaning Questions and answers.docx

Questions

6. I see there is no task 2 in the documentation. Is this a mistake or you guys already worked on it? Yes, this is a discrepancy. Task 3 is actually task 2 and task 4 is actually task 3.

7. What is the wage determination that I should apply from the list you sent? The wage determination for this requirement is listed In the solicitation.

8. What are the requirements regarding licenses and insurance for the prime and sub? I am located in Melbourne, Fl, but I have a sub located in Tampa. He has all the licenses and insurances in order. However I want to make sure what do you need from me as a prime. Vendor should be a licensed HVAC organization with experience in cleaning. No additional license/certificates/insurance is required.

9. What is the payment schedule after I complete the work? When will the government release the payment? 30, 60, 90 days after the project? Should be within 30 days after invoice submission.

10. This is a service contract. I know we don't charge taxes to the government when selling items. Is it the same in services? Correct.

11. Assuming all duct work is internally lined, should this be sealed with an encapsulant when cleaning is complete? Should be sealed if Gravimetric testing is being done. Yes, it should be sealed.

12. Can we work extended hours in a day? Like 10hr shifts? No. Hours of operations are from 0730-1630.

13. Are we responsible for supplying new filters for each AHU? We can install if they are supplied at time of cleaning. Yes, you are responsible for supplying filters.

14. Will the awarding contractor get a copy of the pretesting results? Yes, if available at the time of award.

15. What type of testing is being done? Air, Surface or just Gravimetric? If air will it be directly taken at register since we are only cleaning the duct work? All three will be accomplished. The mold testing will be accomplished before and after

16. Testing will be done by 3rd party hired by MacDill AFB correct? Mold testing, will be accomplished by a 3rd party hired by DISA Central.

17. Following NADCA (National Air Duct Cleaners Association) protocol, it is stated that air scrubbers be used during cleaning to help further eliminate the spread of any contaminants that are currently in the duct systems. Are air scrubbers required for this project? If so, I would recommend a minimum of 3 Dri-Eaze HEPA 700 units per side? Cleaning must be done in compliance with NADCA and other government/federal regulations that applies.

18. Also following NADCA standards, an ASCS(Air Systems Cleaning Specialist) must be onsite at all times during the cleaning. Given the potential contamination with the liner, it is also recommended by the organization that a VSMR (Ventilation System Mold Remediator) also be available. Are these certifications required for this project? If it is required by NADCA standards, then it is required.

19. Given that this is a Federal Wages project? What is the correct pay designation for the crew as duct cleaners/forman? Total cost per man hour? In accordance with the Federal Wage System, the hourly or salary pay will be determined by the vendor. The Government’s IGCE estimates the cost determined reasonable to fund for this requirement.

20. As seen during the walkthrough, the ducting is internally lined and must be sealed/encapsulated with Fiberlock IAQ 8000, post direct contact cleaning (No whips, brushes or compressed air methods, as they would ruin the liner). Please confirm cleaning method and encapsulation Mechanical cleaning methods selected shall not create abrasions, breaks, or tears, to fibrous glass liner or duct board surfaces. Fiber lock IAQ8000 shall be applied utilizing airless spraying equipment and hand application techniques. Work must be in compliance with NADCA and other government federal regulations that apply.

21. Is the cleaning of VAVs, turning vanes and dampers included in the scope? Yes, for VAVs and dampers. No turning vanes should not be part of the scope of work.

22. It is also recommended that Insulated Access Doors be installed during the cleaning, instead of patches, to help ensure future inspections are more easily processed. Are these included in the bid as well? Installation of access plates is mentioned in the PWS/SOW. Please see the following that is under 6.1.3, and view 6.1.2 through 6.13 in the PWS/SOW:

Contractor shall use service panels for closing service openings in the HVAC system components that are equivalent gauge or heavier so as to not compromise the structural integrity of the duct. Service panels shall be mechanically fastened (screwed or riveted) at minimum every 4” on center. The panel shall overlap the ductwork surfaces by minimum of 1” on all sides. It is recommended that service panels used for closing service openings be sealed with gaskets, duct sealants, mastic, or tape.

23. Can you send any pics you might have available along with a floor plan and any diagrams available? Yes