Attach 6 - B246 Air Duct Cleaning - Q and A.pdf

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Building 246 HVAC Duct cleaning services
Solicitation number
FA303026Q0037
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This is a Questions and Answers document for RFQ FA303026Q0037, B246 Air Duct Cleaning, issued by the U.S. Air Force. The document addresses seven clarifications regarding solicitation requirements and expectations.

The Q&A clarifies critical operational and technical requirements for offerors. Regarding ductwork, the Government confirmed the system comprises internally lined fiberglass rectangle duct, externally wrapped fiberglass around round duct branch lines, and some flex duct to supply diffusers. For evaporator coil cleaning, contractors may clean coils without removing refrigerant but must remove the coil from its housing for thorough cleaning; contractors assume full responsibility for any refrigerant line damage, including soldering, refrigerant replacement, and filter drier replacement if the system loses pressure. The Government resolved conflicting timeline provisions by clarifying that both the 5-day work start and dumpster placement notice periods will align to a 5-day start, and the Site Manager must be formally designated in writing prior to the 5-day commencement of work. For certifications, prime contractors may satisfy NADCA and UFGS 23 01 30.41 requirements by submitting active certifications from specialized subcontractors executing 100% of on-site work. Pricing must be submitted as one firm-fixed price for the complete requirement on the SF 1449, with contractors permitted to submit supplementary pricing documentation as needed.

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RFQ FA303026Q0037

B246 Air Duct Cleaning

Questions and Answers

1. Ductwork Composition: To accurately determine the appropriate mechanical cleaning tools (e.g., brushes vs. air whips) and the required materials to properly seal the 10 access points (SOW 2.1.1.9), could the Government confirm the material composition of the existing ductwork (e.g., bare sheet metal, internally lined fiberglass, fiberglass duct board, or flex duct)?

Answer: It appears to be a combo of internally lined fiberglass rectangle duct, externally wrapped fiberglass around round duct branch lines and some flex duct to the supply diffusers

2. Evaporator Coil Removal: SOW Section 2.1.1.7 states the Contractor is responsible for all removal and reinstallation tasks if the evaporator coils must be removed for cleaning. If removal necessitates disconnecting refrigerant lines, who is responsible for the safe evacuation, capture, and recharging of the HVAC refrigerant?

Answer: The contractor would assume that work and liability

3. Coil Cleaning: Section 2.1.1.7 states that the Government will not remove the evaporator coils and that the Contractor is responsible for removal and reinstallation if required to meet cleanliness standards. Should offerors assume that coil removal will not be necessary unless determined by the Contractor during performance?

Answer: CE is okay with having the contractors clean the evaporator coils if they can do so correctly without removing the refrigerant but they should remove the coil from the coil housing in order to clean it thoroughly and correctly, just do not damage the refrigeration lines while doing it. If they do damage the refrigerant lines, they are responsible to fix, to include soldering and the replacement of lost refrigerant along with a new filter drier if the system goes flat where moisture could be introduced into the system.

4. Conflicting Timelines (Dumpster Placement vs. Start Date): SOW Section 1.1 states that work must start within 5 days of contract award. However, SOW Section

3.4 states that a minimum 14-day notice is required to coordinate the placement of Contractor-paid dumpsters. Can the Government clarify how the Contractor should handle waste disposal during the initial days of performance, or if the 14-day notice period/5-day start date will be adjusted?

Answer: The 14-day notice period/5-day start date will be adjusted. Both will be a 5-day start.

5. Conflicting Timelines (Site Manager Designation): SOW Section 1.1 mandates that work commences within 5 days of award, yet SOW Section 2.1.5 allows the Contractor up to 10 days after contract award to designate the Site Manager in writing. Please confirm if the Site Manager must be formally designated prior to the 5-day commencement of work.

Answer: Yes, the Site Manager must be formally designated prior to the 5-day commencement of work.

6. Technical Evaluation (Certifications): The evaluation criteria state that technical acceptance relies on the vendor submitting evidence of NADCA and UFGS 23 01

30.41 certifications. Please confirm that a Prime Contractor may fully satisfy this requirement by providing the active certifications of the specialized subcontractor/teaming partner who will be executing 100% of the on-site work.

Answer: Yes, this is acceptable.

7. Pricing Schedule: We did not identify a Government-provided pricing schedule or bid form. Should offerors submit one firm-fixed price for the complete requirement based on the quantities identified in Section 2.1.1 of the SOW?

Answer: Yes. Pricing should be provided on the SF 1449 and the contractor may submit additional pricing they deem necessary in their own documents in Addition to the 1449.

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