Attachment 12 - SXHT 21-1001- Pre-Bid Q and A.pdf

QUESTION AND ANSWER FORM

Project Number: SXHT 21-1001 Project Description: Replace FCU AHU B1317

Question 1: The solicitation states a bid due date of March 31 but the site visit instruction states a bid due date of March 26. Please confirm.

Answer: The bid due date is 1 April as of Amendment 1 posted with this IFB on sam.gov.

Question 2: Please provide the bid bond requirements.

Answer: The amount of the bid guarantee shall be 20 percent of the bid price or

$60,000.00, whichever is less.

Question 3: Will the POP be from "date of lead time event" or from "NTP Receipt"

Answer: The Notice to Proceed (NTP)will be issued within 30 days of award. The

Period of Performance (PoP) will begin from the NTP’s effective date. The PoP will be 90 days from the “date of lead time event”, NTP, to the completion of the performance.

Question 4: Will Pre-T&B be required?

Answer: No

Question 5: Please clarify the extent of final Test and Balance as there are numerous air devices, louvers, etc. shown with CFM values attached….is the intent to TAB all of the devices shown on the documents?

Answer: Yes

Question 6: Environmental clarifies the extent of Environment Sampling for Heavy Metals and ACM materials. This paragraph makes reference to mechanical room walls and pump room. Please confirm any sampling is limited to the 6th floor mechanical room and adjacent to the floor mounted FCUs…not the pump room on the 1st floor as no work is shown occurring in that room/area.

Answer: Sampling is limited to the 6th floor mechanical room and adjacent to the floor mounted FCUs.

Question 7: General Note 8 on Drawing MD-101 makes reference to temporary cooling in areas with sensitive electronic equipment. Please clarify what areas are included in that requirement.

Answer: All areas behind the main entry door will require temporary cooling, i.e. the entire tower.

Question 8: Are there times when work could be performed when temporary cooling is not required?

Answer: No

Question 9: Temporary cooling on the 6th floor will be a challenge…did the Government have an approach in mind to satisfy this requirement?

Answer: The Contractor is to use their expertise to provide the best plan to the

Government that meets this requirement. The Government does not have a preferred method.

Question 10: Are there any Commissioning (CxA) requirements? If so, what are those requirements?

Answer: No

Question 11: Are new concrete housekeeping pads required for AHU-1 and MUA-1? The existing units do not have housekeeping pads.

Answer: Yes

Question 12: We noted that the existing structural steel contains spray on fire proofing….will we need to repair any damage to this coating if it has been disturbed during this project?

Answer: Yes

Question 13: Drawing M-501 includes a “typical HVAC hanger support detail”… are other HVAC hangers acceptable as long as they comply with SMACNA?

Answer: Yes

Question 14: Are the restrooms onsite available for contractor use?

Answer: No.

Question 15: Is the contractor responsible for any chemical water treatment in the existing CHW system? If so, please clarify what those requirements are.

Answer: No

Question 16: Is any material or equipment that has been removed-demo’d considered as “salvageable material” or is everything to be considered as scrap and disposed of by the contractor?

Answer: Everything demo’d is to be considered as scrap and disposed of by the contractor.

Question 17: Are there any areas in this project to be considered as “confined space”? if so, please clarify where those areas are and what the requirements would be for those areas?

Answer: No

Question 18: Please confirm the Site Superintendent can serve as a triple hat.

Answer: A Site Superintendent may be a superintendent and safety, however a separate person is required for quality.

Question 19: Please confirm that any Outside Air ductwork to be installed on PSFB is required to be fabricated from stainless steel materials?

Answer: Yes

Question 20: Please confirm any manual or motorized dampers to be installed in Outside Air ductwork are also required to be stainless steel construction.

Answer: Yes

Question 21: Due to the minor amount of ductwork to be installed and since it is connecting to existing systems, please confirm that DALT testing would NOT be required…a visual inspection would suffice to confirm all longitudinal and transverse joints have been properly sealed.

Answer: Yes, a visual inspection would suffice to confirm all longitudinal and transverse joints have been properly sealed.

Question 22: Spec Section 23 73 13.00 40 (pg 6) makes reference to a 5 year warranty time frame from project close out…please clarify what exactly is to be included in this 5 year warranty? If the manufacturer does not offer a 5 year warranty period, how should the contractor proceed?

Answer: “Final acceptance is dependent upon providing the warranty, based on approved sample warranty, to the Contracting Officer, along with final test reports. Ensure that the warranty is valid for at least 5years from the date of project closeout, showing Government as the warranty recipient.”

Question 23: MUA-1 is a 100% Outside Air unit, due to the proximity to the ocean, should the internals on this unit be fabricated from stainless steel to prevent corrosion?

Answer: Yes

Question 24: Spec Section 23 73 13.00 40 para. 2.2.2.3 makes reference to marine grade lights and receptacles in these AHU’s….are those devices required?

Answer: Yes

Question 25: Spec Section 23 73 13.00 40 (pg. 12) para 2.2.8.5 makes reference to inclined manometers for measuring filter status. We don’t believe those filter gauges are an available option on these units. Please provide an alternative if a filter gauge is required?

Answer: The requirements are specified on the drawing and in the specifications. The Government does not have a preferred manufacturer.

Question 26: Please confirm no field Vibration testing is required per Spec Section 23 73 13.00 40 (pg 13)

Answer: No field vibration testing is required.

Question 27: Please confirm the extent of painting on electrical components.

Spec Section 26 05 00.00 40 (pg. 6) para. 3.1 indicates all conduit, boxes, fittings, etc. are to be painted…

Answer: All new electrical components installed by the Contractor are to be painted as stated in the drawings.

Question 28: Spec Section 26 29 23 Variable Frequency Drives has been included in these specifications yet no VFD’s are included in this project. Should this spec section be removed in its entirety?

Answer: Yes, VFDs are not required, and this section is not applicable.

Question 29: Please provide electrical panel manufacturer and breaker types for panels A, B and C.

Answer: The requirements are specified on the drawing and in the specifications. The Government does not have a preferred manufacturer.

Question 30: Please clarify the extent of DDC Controls on this project…does the existing system monitor or control the FCU’s or are they only controlled by local t-stat?

Answer: The existing DDC Controls monitor and control the FCUs.

Question 31: Please confirm no work associated with the Stair Pressurization is included in this project?

Answer: No Stair Pressurization is included in this project.

Question 32: Is the extent of DDC Controls to be “like for like” and no added points to the system?

Answer: Yes

Question 33: Will any graphic upgrades be needed at the PSFB head end”

Answer: No

Question 34: What is the extent of user training on the new DDC Control system if its going to be “like for like” replacement?

Answer: Standard training will suffice.

Question 35: Has the EOR confirmed all manufacturer maintenance and clearance requirements have been fulfilled with this installation as shown on the construction drawings?

Question 36: Will the Government allow the contractor to use Procore for submitting/tracking/managing submittals, RFIs, meetings, etc.?