Attachment 16: Vendor Questions Amendment 004 0004

Pond heat rejection taps. Attachment 14 states that the pond heat rejection provisions will not be included, but the Revision 1 Statement of Work, paragraph II.a, still reads, "Provide adequate taps for future Pond Heat Rejection system (tees, valves, and caps)." Please confirm whether the taps are to be included in the quote. SAM.gov attachment for SOW Rev 1 posted for Amendment 002 removes the statement. Please review the solicitation documents.

Piping joints. Attachment 14 states that Gruvlok or Victaulic style piping is preferred. Please confirm whether grooved piping is a requirement, or whether welded Schedule 40 black steel piping, consistent with the reference specification, is technically acceptable. Vic or Gruvlok is required for maintenance purposes.

Heating water scope. The answer to the heating water scope question (Item 00001C) in Attachment 14 reads "JLB to verify." Please confirm the number of AHUs whose heating water branches are included, and whether the branches run from the existing heating water main loop. This language was included when the project included changing the air handling units out for new units. Heating water piping shall have the pneumatic valves changed to electric and install piping from the new valve to the coil.

Design review. Please advise how many calendar days the Government expects for review and approval of the contractor's PE-stamped design before installation begins, so it can be reflected in the construction schedule. Ten business days.

Cooling tower CT-4 dampers. The Attachment 15 damper schedule lists inlet and outlet dampers for CT-4 but no operator quantity, unlike CT-1 to CT-3. Please confirm whether the CT-4 damper actuators are pneumatic and included in the replacement, or whether they were furnished electrically with the completed cooling tower replacement. Please also confirm the unlabelled Honeywell 13-inch operator listed beneath AHU 4 on the valve schedule is included. CT-4 dampers are included in this scope of work. They were located in the outlet air stream of the cooling towers and need to be relocated to the exterior of the tower when converted to electric operators. The 13-inch operator needs to be replaced as well, yes.

Abandonment of Existing Vertical Piping. Will the Government permit existing vertical piping running through the NBC phases from the basement to the penthouse to be abandoned in place, provided the piping is properly isolated, drained, disconnected, and securely capped at all accessible termination points?