FA524023R0030_RFI QandA 01SEP23.pdf

Question # Reference Question/Comment Government Response

1 FA524023R0030

Mechanical demolition and removal states that, “Remove and dispose of existing booster pump, accessories, components, pipes, fittings, support, and valve”. Kindly confirm if this includes the exterior valves and fittings located adjacent to the buildings.

Yes, all fittings, valves and supports that will be affected during the replacement of booster pump.

2 FA524023R0030

Section 2.3 Demolition and Removal, page 7 of 33, By- Pass Pit, East of B682 Mechanical item b states that, “Remove and dispose of existing by-pass piping, water meters, accessories, components, supports, fittings, and valves”. Kindly confirm that the underground piping connected to the by-pass piping will not be removed and shall be abandoned in place since the bypass pit will be backfilled and the new by-pass piping will be installed above ground.

All existing pipes, fittings, valves, supports in by-pass pit will be removed. New by-pass piping will be above ground and connected to existing underground pipe.

3 FA524023R0030

Can you confirm that no exterior underground piping shall be removed, and all new piping shall be installed aboveground aside from the new underground piping for the inter-tie vault, west of B685?

All exposed piping will be elevated above ground level located west of Bldg-686.

4 FA524023R0030

Can you provide a point of connection (POC) for the new aboveground waterline?

See Section J, Attachment 8 in Solicitation.

5 FA524023R0030

May we request a copy of the civil, mechanical, and electrical as built for all the buildings as well as the as built of the existing underground waterline connections of the of the booster pump?

See Section J, Attachment 9 in Solicitation .

6 FA524023R0030

In reference to 4.4. Building Commissioning, requesting verification with the Government if the existing DDC controls is a JCI Metasys?

No existing DDC system. Only SCADA system in the facilities which is obsolete and need replacement.

7 FA524023R0030

Requesting existing points list for the mechanical equipment’s affected on this repair and construction work?

Contractor must field verify existing condition prior to start of design and construction work.

FA524023R0030 - AJJY 23-1026A Repair Booster Pump Station #3 B680, B681, B682A, B683 and B686, Andersen Air Force Base, Guam - Questions & Answers (Q & A)

8 FA524023R0030

Please confirm if the booster pumps is an individual pump operation or not.

Contractor must field verify existing condition prior to start of design and construction work.

9 FA524023R0030

There are several sizable pumps at the project site and to ensure we provide the correct treatment systems; can you confirm the aggregate/peak flow rate to be disinfected and fluoridated? Can you provide the line pressure at point of injection?

Contractor must field verify existing condition prior to start of design and construction work.

10 FA524023R0030

Who will be responsible for the booster pump in the chlorination room? We need to make sure booster pump pressure is higher than the line psi at point of injection.

Contractor will be responsible to provide temporary water treatment during construction.

11 FA524023R0030

What is the service line pressure to the water treatment building?

Contractor must field verify existing condition prior to start of design and construction work.

12 FA524023R0030

We kindly request a one-week extension for this solicitation to provide our suppliers with enough time to incorporate the response in this RFI and get the best possible cost proposal for the water treatment system.

Due to end of year requirements, the Government is not able to accommodate your request.

13 FA524023R0030

Part 1, SOW, Para 2.3.b for BLDG-680, 681, and 682A, states “Remove and dispose of existing disconnect switches, transformer, electrical panel, conduits, clamps, and wires.” Based on the site visit, existing disconnect switches, dry-type transformers, electrical panels, and associated conduits and wires for buildings 680, 681A, and 682A appear to be in good condition. Please confirm that the said equipment is to remain.

Yes, remove and replace existing electrical appurtenances.

Please be advised, Booster pump station #3 must remain operational as repair and replacement of equipment is being done.

14 FA524023R0030

Assuming all pumps will run simultaneously, the combined loads of all new pumps (see below) will exceed the existing pad-mounted transformer, 300kVA, and generator, 200kW ratings. Please provide the pumps sequence of operation to confirm if the upgrade of the electrical equipment is required.

Bldg 680 – 100HP Bldg 681 – 100HP Bldg 682A – 150HP

At no time is the pumps at Booster pump station #3 running simultaneously. Shift operators have the choice of running either pump, controlling GPM through VFD’s to suffice water consumption requirements. This is a Design- Build project and contractor is responsible for the design requirements to comply UFC, all applicable codes, and standards.

15 FA524023R0030

What is the required capacity of the overhead lifting hoist system?

The new overhead lifting hoist system is required to lift pumps, motors, related equipment from buildings for the safe operation and maintenance and repair/replacement of equipment. Contractor to verify existing condition/new equipment prior to start of design and construction work.

16 FA524023R0030 Should this hoist be motorized or manual hoist?

This lifting hoist system can be either manual/motorized and will provide a safe lift for mechanics.

17 FA524023R0030 Will the hoist be chain or wire rope?

This is a Design-Build project and contractor is responsible for the design requirements to comply UFC, all applicable codes, and standards.

18 FA524023R0030 What is the required lift height?

This is a Design-Build project and contractor is responsible for the design requirements to comply UFC, all applicable codes, and standards.

19 FA524023R0030

Will the trolley be manual push/pull, manual chain driven or motorized?

This lifting hoist system can be either manual/motorized and will provide a safe lift for mechanics.

20 FA524023R0030 How long will the monorail be?

Contractor to verify existing condition prior to start of design and construction work.

21 FA524023R0030 Will there be curves in the monorail?

Contractor to verify existing condition prior to start of design and construction work.

22 FA524023R0030

Will the monorail support structure be separate from the building structure or will we mount it directly to building structural members?

This is a Design-Build project and contractor is responsible for the design requirements to comply UFC, all applicable codes, and standards.

23 FA524023R0030

Each of these locations mentions “extend out double door”.

Will that require an exterior support outside the building?

This overhead lifting hoist system should be able to remove equipment from buildings and transferred outside building to be transported for repair or hoisting equipment from outside building and transferred inside to be installed.

Contractor is responsible for the design requirements and to meet the intent of the project.