36C24220B0045_8.docx

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Y1DZ

620A4-14-118 Chiller Plant Upgrade 10468-3904 36C24220B0045 08-05-2020 12:00

EASTERN TIME, NEW YORK, USA

N

SDVOSBC

236220 Department of Veterans Affairs Network Contracting Office 2 Hudson Valley Healthcare System 2094 Albany Post Road Montrose NY 10548 Dany Humphreys Department of Veterans Affairs Hudson Valley Healthcare System 2094 Albany Post Road Montrose, NY 10548

10548

USA

https://www.va.gov/find-locations/facility/vha_620A4 Agency Website Castle Point Dany.Humphreys2@va.gov Contract Specialist 36C24220B0045 l Chiller Plant Upgrade l Castle Point Campus Attached are the final RFI answers and pictures.

Bid opening 8/05/2020 at 12:00 Noon See attached document: HA102-Hazardous Materials Lead Paint Location Plan Ground Floor.

RFI Q & A Chiller Plant

1. There does not appear to be any insulation specification for the condenser water. Please clarify.

-Correct. There is no insulation for the condenser water.

2. Please provide a roofing specification for the patch and repairs that includes the Firestone product used.

-Notes on SD102 (#7), SD103 (#5), SF-102 (#7), and SF-103 (#11) require the contractor to coordinate with the COR and Firestone’s instructions and details “so as not to void any warranty”. In addition, Detail #2 on S-502 also sates for the contractor to “match existing”.

3. Will all the GCs bidding the job be made public?

-The Sign in Sheet of attendees at the Site Visit was posted publicly, no other list will be posted.

4. The specifications reference an existing coordination study that was completed in 2013 that is available if requested. Would it be possible to get a copy of the study?

-The study will be made available to the contractor who is awarded this project.

5. Bid drawing E-601 & E-602 (Existing & New Electrical one line diagram): Please provide name plate detail of existing substation 35-US Federal Pacific so as to enable the bidders to obtain quote for the new replacement circuit breakers. Also please clarify whether existing breakers are fixed or draw out type?

-Existing breakers and new breakers are draw-out type. Refer to spec section 26 23 00; Part 2.3 for information regarding existing breakers and new breakers.

The Substation is by FPE, 3000A, 277/480V, 3 Phase 4 Wire with 120V Control. SO No 02-9981, Date: 5-14-81, Dwg No.: 02-9981-1D2.

6. Is this a tax-exempt project?

- Yes

7. If tax-exempt, will the VA be issuing a tax-exempt certificate for use by the Prime Contractor and subs?

-No

8. There are no specifics on the drawings regarding lead paint abatement, i.e. locations, quantities, etc. Please provide specifics such as locations of abatement, quantities of abatement, etc.

- Drawing HA102 has been provided to inform the contractor of presence and known locations of lead paint within project boundary. Intent is not to abate areas of lead paint. All work requiring grinding, cutting, etc., to be performed in a safe manner per the contractor’s means and methods and the guidelines set forth by the Occupational Safety and Health Administration for lead: • Step 1: Determine if the Job Involves Lead-Based Paint. • Step 2: Set It Up Safely. • Step 3: Protect Yourself. • Step 4: Minimize the Dust. • Step 5: Leave the Work Area Clean. • Step 6: Control the Waste. • Step 7: Verify Work Completion with the Cleaning.

9. Drawing S-001 calls for structural steel inspection, then continues to specify visual inspection of all welds, 10% of primary connection fillet welds get mag particle, and 100% get UT. There are different and more stringent specs called out in 01 45 29 for testing requirements. Which will be used to govern testing of concrete and steel?

- More stringent requirements between drawings and specs shall be followed.

10. If steel is to be UT inspected, should it be inspected before galvanization and at the shop? Field UT of galvanized steel is not recommended.

- Shop or field UT testing is acceptable.

11. Spec section 23 05 11 uses the terms “Coordination/Shop Drawings”, but our understand of these two are very different. We interpret Coordination Drawings as those BIM or CAD drawings issued to ensure no interference/clashes between systems, whereas Shop Drawings are from the OEM. Please advise which drawings the VA is expecting.

- Coordination drawings are submittal drawings (CAD or BIM) to be reviewed to assure disciplines have been coordinated and maintenance/access has been shown. Shop drawings (i.e. fabrication, erection drawings) are submittal drawings (CAD or BIM) to be reviewed to assure construction standards are being met. Both are required per the specs.

12. If Coordination Drawings are required, the Level of Development (LOD) must be specified so the deliverables are known.

- Refer to spec section 23 05 11, Part 1.4.J.

13. If Coordination Drawings are required, what trades are expected to show up on these?

- Refer to spec section 23 05 11, Part 1.4.J.

14. Steel demo on SD103 is unclear as to what remains. It appears everything is demoed except the existing W8x31 column. Please confirm.

- As noted on SD103, all ex steel dunnage framing & bracing and existing pipe dunnage posts shall be selectively demolished. Existing steel wide flange dunnage post/column shall remain.

15. Please confirm only steel fabricators holding AISC certifications are approved for steel supply on this project.

- Refer to specification section 051200-1.4 for required steel fabricators and installers qualifications/certifications.

16. Section 09 91 00 indicates galvanized steel and mechanical insulation get painted, but later in the section gives contradictory language. Please confirm the painting scope.

- Galvanized steel not to be painted. Condenser water piping to be painted per ASME13.1. Floor is to be painted (color per VA). Housekeeping pads are to be painted "safety" yellow. Existing painted steel I-beams to be touched up at locations of demolished and new pipe/equipment supports to match existing color.

17. Is the GC expected to directly contract with the third party CIH or can this come from the abatement contractors’ staff?

- The project monitoring firm and air monitoring firms/laboratories must be independent of the asbestos abatement contractor per industrial Code rule section 56-4.3.

18. How many and at what locations are Cooling Tower spring isolators required?

- Please see sheet note 7 on drawing MQ102.

19. Insulation specs 230711-1 specifically call for re-insulation after Asbestos abatement. No drawings indicate removal of insulation due to asbestos abatement. Please confirm that this does not apply.

-There was no asbestos pipe and/or equipment insulation referenced in my report. Therefore, there shouldn’t be any planned abatement of pipe and/or equipment insulation at this time.

20. Specifications are not clear on whether jacketing is used on Chiller plant indoors. Was there Aluminum or PVC Jacketing on piping to be demolished?

- Provide color coated PVC jacketing per ASME A13.1 for chilled water piping. No known Aluminum or PVC Jacketing on piping to be demolished.

21. Spec 23 07 11, Part 1.1, Paragraph A, Item 2 calls for reinsulation of HVAC piping, duct, etc. after abatement of asbestos. There are no pipe abatement specs given. Also, there is no pipe, equipment or duct insulation asbestos abatement scope shown on the drawings. Please clarify what the spec refers to. If there is insulation asbestos abatement please provide a clear scope and quantities.

- There was no asbestos pipe and/or equipment insulation referenced in our report. Therefore, there shouldn’t be any planned abatement of pipe and/or equipment insulation at this time.

22. The drawing M501 #3.4 says the chilled water piping about 6” can only be welded joints. But the spec 23 21 13 says the chilled water piping 2” and above can either be welded or grooved. Which of these is correct?

- Chilled water piping 6" and above, shall be welded only.

23. The mechanical details do not show a triple duty valve on the pump discharge, but the hydronic piping specs call for one at 23 21 13, 2.1, G,1. Please clarify. From experience, these are several thousand dollars and there are nine of them. All nine will cost several tens of thousands of dollars.

-Triple duty valves not required or recommended.

24. Reference: Contract Specification Section 02 82 13.21 Roof Asbestos Abatement (Note: Documents Contain two such sections the first is 4 pages long) Subject: Extent of Contractor Responsibilities Not Clear – Asbestos Abatement Monitoring, Testing & Inspection The specifications for the Roof Asbestos Abatement are confusing regarding the extent professional monitoring, testing and inspection required of the bidder as the specification seems to imply that the owner and the contractor are required to perform similar services (refer to sect 02 82 13.21 para 2.3 and elsewhere). Please clarify.

-The contractor has a responsibility to monitor his own employees’ exposure to hazardous materials under 29 CFR 1910.120. The contractor’s supervisor can perform the air sampling if he has been trained to do so. The IH technician (hired by the VA) shall be responsible for monitoring the project to protect the health and safety of the employees and patients of the VA. The IH technician will be responsible to make sure the contractor is performing his duties per local, state and federal regulations.

25. Reference: Contract Drawings SD102, SD 103 and S 502 Subject: Existing Roofing System Undefined The Contract Drawings note that Contractor required patch, flash and seal the existing roofing where openings are closed or penetrations patched to “match the existing roofing material”, which is noted as a Firestone product. Please advise the existing type of Firestone roofing system, i.e. BUR, SBS, EPDM or PVC and approximate year installed.

-Notes on SD102 (#7), SD103 (#5), SF-102 (#7), and SF-103 (#11) require the contractor to coordinate with the COR and Firestone’s instructions and details “so as not to void any warranty”. In addition, Detail #2 on S-502 also states for the contractor to “match existing”.

26. When the guys were onsite the electrical closet was locked. As such, they were unable to see the electrical gear. The VA stated they would send pics because nobody was able to see this and the scope is unknown until we can see the pics. This being said, can you post an addendum and include the pics so electrical contractors know and understand the manufacturer and type of breakers required?

-See attached pictures

27. Please confirm the VA retains the temp chiller currently onsite and its rental costs during construction are not part of this contract.

- Confirmed.

28. Does the VA anticipate off hours work will be required for any portions of this project?

- Coordinate with spec section 01 00 00. Electrical off-hour work to be performed per drawing E-001, E-101 and EP101.

29. Is yes to the above, what scope of work will require off hours?

- As noted on SD103, all ex steel dunnage framing & bracing and existing pipe dunnage posts shall be selectively demolished. Existing steel wide flange dunnage post/column shall remain.

30. What seismic design category is applicable to this project?

- Refer to Drawing S-001, Design Data.

31. Please show a detail of the “pipe port” the drawings explain where the chilled water lines to the temp chiller enter and exit through the window. We do not understand the plate/panel the drawings are trying to explain.

- Refer to structural dwg SF102 for more information.

32. Drawing M601, Chiller #3, 10” CHS line shows a backflow preventer (“RPZ BFP”) after the flow meter and before the balance valve with arrows pointing the return line and into dead air space? Is this correct?

- This is not correct and is not part of the chiller piping connections. This can be omitted.

33. If above is correct, please provide clarification on this.

- See above

34. Electrical drawings show two temp chillers, but the mechanical drawings only show one is connected. Please clarify scope of supply.

- (2) Temporary chillers required and furnished by the VA. All final connections to the temporary chillers to be made by the VA (Keynote #5, Sheet E-101). Mechanical contractor to provide interior piping to exterior of the wall as shown on M-101 (Keynote #5). All connections exterior to the building to be by VA.

35. Drawing M501, Detail 3 shows the chiller connections and one of the balancing valves is indicated as a butterfly control valve. Confirm the upstream sides get the control valve and downstream sides get a balancing valve.

-Correct, the upstream side gets the control valve, and the downstream side gets the balancing valve.

36. Can a Cooling Tower connection detail be provided?

- Please see dwgs MP102, M-301, M-303, M-304, and M-602 for Cooling Tower connections.

37. Are globe valves required on the Cooling Tower drains (as shown on M-602)?

- No, ball or butterfly valve can be used.

38. Drawing HA101 references an existing roofing manufacturer warranty from Firestone. Is the warranty still in effect?

-Yes

39. Confirm water treatment contract covers chemical feed.

-The VA contractor is responsible to provide chemicals, chemical tanks, feed pumps, feed lines to the GC supplied manifold systems & associated apparatus (i.e. not limited to coupon rack , isolation valve , ..etc.)

40. If no to above, please provide chemical feed contractor info.

-NA

41. Is the chemical feed scope by others or part of this contract?

-The VA contractor is responsible to provide chemicals, chemical tanks, feed pumps, feed lines to the GC supplied manifold systems & associated apparatus (i.e. not limited to coupon rack , isolation valve , ..etc.)

42. Confirm if the PM can provide QC Manager roles or does this require an additional person, making the total required onsite persons from the GC’s staff three different employees.

-The PM can provide QC roles.

43. Spec 23 25 00 states for the GC to provide water treatment and monitoring for 12 months, 6 return to site visits, etc. following commissioning of system. Please confirm if the VA plans to use their existing water treatment contractor for this scope or if the prime contractor is expected to provide this coverage.

-VA chemical contractor will be responsible for that task

44. If part of this contract, please provide the water treatment contracting contact info.

-Chardon Labs

45. 4Confirm if the Superintendent and Project Manager are both required to be onsite full time, each day construction activities are commencing.

-Only Superintendent is required to be on site on any preformed workday.

46. If full time onsite, are both expected to be onsite from Day 1 to the very last day (Final Handover)?

-Only Superintendent is required to be on site on any preformed workday.

47. Can crane picks take place during normal hours?

-Yes

48. Will the VA provide space for an office trailer throughout construction?

-Contractors allocated space will be around the chiller building with no blocking to any entry or way road.

49. If yes to the above, should contractors’ meter their utility usage?

-Yes

50. What is the existing BMS on site?

52. Bid drawing M-802: Please provide the contact information of the contractor for is at present servicing campus existing Building automation system(BAS) -Johnson Controls

53. Where will contractors be allocated space for laydown and onsite pipe fabrication?

-Contractors allocated space will be around the chiller building with no blocking to any entry or way road.

54. Who is the existing roof contractor providing warranty on roof?

-Firestone

55. What are the Covid-19 requirements for working within the plant?

-PPE , social distancing and gate screening.

56. Can the VA provide the contact info for the current water treatment vendor?

-Chardon Labs

57. The spec state 280-day POP whereas the solicitation states 360 days. Please confirm.

-360 days

58. The specifications for the Roof Asbestos Abatement are confusing regarding the extent professional monitoring, testing and inspection required of the bidder as the specification seems to imply that the owner and contractor is required. ***Also, there are two abatement sections 02 82 13.21 (one is obviously incomplete) -The contractor has a responsibility to monitor his own employees’ exposure to hazardous materials under 29 CFR 1910.120. The contractor’s supervisor can perform the air sampling if he has been trained to do so. The IH technician (hired by the VA) shall be responsible for monitoring the project to protect the health and safety of the employees and patients of the VA. The IH technician will be responsible to make sure the contractor is performing his duties per local, state and federal regulations

*** refer to sect 02 82 13.21 para 2.3 and elsewhere. (see attached)

59. Neither the CIH and abatement contractor can determine the extent of the Lead Paint Removal to be anticipated from either the plans or specifications.

-Drawing HA102 has been provided to inform the contractor of presence and known locations of lead paint within project boundary. Intent is not to abate areas of lead paint. All work requiring grinding, cutting, etc., to be performed in a safe manner per the contractor’s means and methods and the guidelines set forth by the Occupational Safety and Health Administration for lead: • Step 1: Determine if the Job Involves Lead-Based Paint. • Step 2: Set It Up Safely. • Step 3: Protect Yourself. • Step 4: Minimize the Dust. • Step 5: Leave the Work Area Clean. • Step 6: Control the Waste. • Step 7: Verify Work Completion with the Cleaning

60. Confirm the HVAC Water Treatment is by others and NOT part of this contract (conductivity/PH controller, chemical feed pumps, coupon rack, etc).

-The VA contractor is responsible to provide chemicals, chemical tanks, feed pumps, feed lines to the GC supplied manifold systems & associated apparatus (i.e. not limited to coupon rack , isolation valve , ..etc.)

61. Reference: Contract Drawings SD 101, 102, Etc. and Specification Section 02 83 33.13 – Lead Paint Abatement Subject: Extent of Lead Paint Abatement Undefined The Contract Drawings note that “Existing Building has the presence of Lead Paint. Refer to the Specifications.” Since the specification’s do not delineate the location or quantities of lead paint, the scope of this work is undefined. Please Clarify.

-Drawing HA102 has been provided to inform the contractor of presence and known locations of lead paint within project boundary. Intent is not to abate areas of lead paint. All work requiring grinding, cutting, etc., to be performed in a safe manner per the contractor’s means and methods and the guidelines set forth by the Occupational Safety and Health Administration for lead: • Step 1: Determine if the Job Involves Lead-Based Paint. • Step 2: Set It Up Safely. • Step 3: Protect Yourself. • Step 4: Minimize the Dust. • Step 5: Leave the Work Area Clean. • Step 6: Control the Waste. • Step 7: Verify Work Completion with the Cleaning.

62. Reference: General Requirements – Section 01 00 00 Paragraph 1.85 Electrical Work Permit A.

Subject: State or Local Licensed Electrician Subparagraph A. of the above referenced document reads as follows: The Contractor is responsible for ensuring that a Licensed Journeyman Electrician by a State or Local jurisdiction is present during any and all electrical work activities during this project. New York State does not regulate electricians but requires local jurisdictions to issue their own electrical licenses. Since the project lies within the jurisdiction of Duchess County, please confirm that the electrical work can be overseen by firm that has an electrical license issued by Duchess County.

-Yes, it can be performed by licensed Duchess County.

63. The mechanical insulation spec (23 07 11) calls for Cellular Glass (foam glass) insulation for the chilled water piping in the chiller plant and also on the fittings. The cost for this insulation is at least quadruple the of the industry standard mineral fiber (fiber glass). The reason I bring this up is because we expect this alone will put the project over the listed Magnitude of Construction and likely be over the VA’s budget. From the Insulation Schedule it appears mineral fiber is acceptable insulation in Chilled Water piping, but inside the Chiller Plant it changes to foam glass insulation.

-Per spec table, mineral wool and cellular glass acceptable.

64. There are points in the control system for pipe heat tracing, but tracing isn’t called out anywhere else. We would expect to see heat trace called out for Condenser Water piping. Please Clarify.

-Currently there is no heat tracing required for the chilled or condenser water piping. Provisions within the design allow for the addition of heat tracing and basin heating in the future. The requirement of identifying points in the control system is to allow for the future installation of the system without expansion of current modules.

65. The plans call for foam glass insulation, wrapped in aluminum for indoor piping. Typically this would be done with foam glass and pvc fittings indoor. There is a significant delta in cost to go with the aluminum, and if that is what’s required, we can put it in, I just wanted to make you aware. We wouldn’t need a bid extension, but a clarification illustrating either that it’s required, or not would be helpful.

-Per spec table, mineral wool and cellular glass acceptable. Color-coated PVC jacketing required on all chilled water piping. Provide color coated PVC jacketing per ASME A13.1 for chilled water piping. No known Aluminum or PVC Jacketing on piping to be demolished.

66. The scheduled material for the CHW piping in the chiller room calls for cellular glass as per attached specification 23 07 11 page 23, but also refers to mineral fiber for above ground piping. There is no reference to jacketing on the cellular glass for indoor above ground conditions, only underground as per attached specification 23 07 11 E. Please advise if mineral fiber is acceptable for CHW piping in the chiller room or advise what jacket is required for cellular glass for interior conditions.

-Per spec table, mineral wool and cellular glass acceptable. Color-coated PVC jacketing required on all chilled water piping. Provide color coated PVC jacketing per ASME A13.1 for chilled water piping. No known Aluminum or PVC Jacketing on piping to be demolished.

67. Do GC and GCR refer to the condenser water piping system as the water temperature does not match up? Please advise if condenser water requires insulation and what material is required.

-Per drawing M-001, GC and GCR refer to "chilled glycol-water" and are not being used. There is no insulation for the condenser water. There is no insulation for the condenser water.

68. Domestic water heater and unit heaters are shown on the floor plans, but it’s not clear what will be controlling it. Domestic water heater and unit heaters are assumed to be standalone unit and excluded from controls scope. Please confirm.

-Stand-alone domestic water heater is excluded from controls spec. Unit heaters are existing to remain and to be interfaced and controlled as identified on Drawing M803, ventilation heating.

69. Chemical control panel in chiller room is assumed to be packaged and controls will only interface it with DDC. Please confirm.

-Confirmed.

70. Ref. page 19 of spec section 23 09 23 DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC: per paragraph 230923-2.5.A.7, controllers provided need to be with display and keypad however solution asked in specification is based on Tridium’s NIAGARA which does not come with this feature. Please find below snapshot for your ready reference. Assumed to provide Tridium’s NIAGARA controllers without display and controller. Please confirm.

-Per specification Section 23 09 23-1.1.C.4 & 2.3 all communication and controllers are to be native BACnet capable. Paragraph 1.1.B identifies that the new chiller plant will report to the existing Tridium control system but does not exclude the use of gateways or translators between the chiller plant optimization controllers and existing central BMS. The chiller plant optimization controllers would include the local keypad. VA to confirm if remote operator interface laptops may be used in place of the local keypads.

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