Amendment 0003 - RFI Notice.pdf

Request for Information (RFI) Notice

Project Name: Modernize Pathology Department, VA San Diego Solicitation Number: 36C26223B0016 Amendment Number: 0003

VA Responses provided in red bold font (Example: RFI Questions & Answers)

Question 1 Q: The purpose of this RFI is to request a due date change due to a conflict with VA San Diego – Basement – These two projects are due same date and time; to; we are a small business and only have the resources to bid one bid at a time.

A: The bid due date is extended to Wednesday, September 13, 2023, at 2:00 P.M. (PDT). The public bid opening dial will remain unchanged: 1-205-235-3524, Phone Conference ID: 285-801-964#.

Question 2 Q: The purposed of this RFI is to request that you add the following certificate to Solicitation

Certificate of Compliance for Services and Construction completed and signed as per clause 852.219-75 VA Notice of Limitations on Subcontracting-Certificate of Compliance for Services and Construction.

A: Please refer to VAAR clause 852.219-75 on pages 49-50 of the solicitation. The VAAR clause is provided in full text and a sample certificate is provided in VAAR 852.219-75(d) on page 50.

Question 3 Q: I came across this project via Blue book and we are interested in putting a bid in regarding the need for bathroom accessories. We supply anything bathroom and even kitchen related. I am looking for more information on what accessories are being needed, as well as the specs and unit amount per accessory.

A: Please refer to the solicitation attachments for specifications on any required accessories.

Question 4 Q: Would you happen to have a “interested vendors list” for the above stated project?

A: Please refer to Solicitation Amendment 36C26223B0016 A0002 dated 08/21/2023. The sign-in sheet was provided as an attachment to Solicitation Amendment 36C26223B0016 A0002.

Question 5 Q: Plan sheet EP-6.4 says to replace the existing MCC as well as several other panelboards that do not show panel schedules. Please provide panel schedule, amperage and AIC ratings for the existing MCC, 1XR, 1XA, 1XAA, 1A, 1CEXN-1, 1CEXM, 1CEXF, 1CEXG, 1CEXGA, 1CEXB, 1CEXC.

A: Please see Attachments 1 through 12 for existing schedules for the referenced panels. Attachment 13 is also provided as photos for some of the referenced panels. These panel boards did not have any revisions as part of the scope of this project, however they were in the area that was to be abated and are shown as needing to be replaced. Panel schedules were only included for panel boards that had load modifications as part of this project.

Question 6 Q: Please provide AIC ratings for all panelboards shown on electrical sheets EP-6.5 through EP-6.8

A: AIC ratings not marked on existing panel boards or available in as-builts. AIC levels are addressed on single line to be fully rated.

Question 7

Q: Please share with us the sign-in sheet form yesterday's site visit for the subject project. If the sheet is to be made part of any upcoming addenda then please advise when the addenda is expected to be out.

Thank you in advance for your time and consideration.

A: Please refer to Solicitation Amendment 36C26223B0016 A0002 dated 08/21/2023. The sign-in sheet was provided as an attachment to Solicitation Amendment 36C26223B0016 A0002.

Question 8

Q: We kindly request your assistance in obtaining the bidders list for the project titled - Modernize Pathology Department Bldg 1

This information is crucial for us to proceed with approaching the General Contractor and submitting our quote for our business scope, which encompasses the following:

10 21 23: Cubicle Curtains and Track 12 22 00: Curtains and Drapes 12 44 16: Shower Curtains & Rods

A: Please refer to Solicitation Amendment 36C26223B0016 A0002 dated 08/21/2023. The sign-in sheet was provided as an attachment to Solicitation Amendment 36C26223B0016 A0002.

Question 9

Q: The specified Scrub Sink, P-520, has been discontinued by the manufacturer. Please specify a different sink.

A: Please refer to Attachments B and C from the original solicitation for specifications. Please note that the plumbing fixtures in Plumbing Fixture Schedule on PL6.01 are basis of design fixtures shown for reference only.

The VA will approve plumbing fixtures, faucets, and accessories prior to purchase and installation. See Plumbing Fixture Schedule note 15 on PL6.01.

Question 10

Q: Plumbing drawing PL2.11 et al makes several references to drawings GC-2.0 & GC-1.2. These GC drawings don’t seem to be part of this drawing package. Please provide all missing drawings.

A: References are incorrect. GC-001 is to be referenced. Complete plumbing scope of work is demonstrated in the entirety of the design documents. GC are General Contract drawings provided in bid drawing set.

Question 11 Q: Note 3 on plumbing drawing PL-2.12 and note 7 on drawing PL2.11 reference temporary fixtures. But plumbing drawings do not show any temporary fixtures. Pipe sizes are not given for temporary plumbing. This occurs many times, I give this instance as an example.

A: Please refer to Attachments B and C from the original solicitation for plumbing fixture model number and specifications. The final location of temporary plumbing fixtures, piping, drains will be coordinated with VA prior to installation. Temporary plumbing fixture pipe sizes to match connection size on lab consultants plumbing fixture schedule. The VA will approve final fixture, faucet, and accessories prior to purchase and installation. Complete plumbing scope of work is demonstrated in the entirety of the design documents. Locate temporary fixture, supply lines, drains and vents as part of phased construction on GC sheets. Coordinate locations of fixtures within final fixture locations if possible. Relocate final location of fixtures, supply lines, drains and vents as part of each construction phase on GC sheets. See temporary plumbing utility phasing notes for details. See temporary Plumbing Utility Phasing Notes on sheet PL-1.12. See note 15 Plumbing Fixture Schedule note 15 on PL6.01. See Typical keynote, 26/PL1.12.

Question 12 Q: Please clarify temporary plumbing and temporary fixtures.

A: Please refer to Attachments B and C from the original solicitation for plumbing fixture model number and specifications. Complete plumbing scope of work is demonstrated in the entirety of the design documents. The VA will approve final fixture, faucet, and accessories prior to purchase and installation. The final location of temporary plumbing fixtures, piping, drains will be coordinated with the VA prior to installation. Temporary plumbing fixture pipe sizes to match connection size on lab consultants plumbing fixture schedule. Locate temporary fixture, supply lines, drains and vents as part of phased construction on GC sheets. Coordinate locations of fixtures within final fixture locations if possible. Relocate final location of fixtures, supply lines, drains and vents as part of each construction phase on GC sheets. See temporary plumbing utility phasing notes for details. GC are General Contract drawings provided in bid drawing set. See temporary Plumbing Utility Phasing Notes on sheet PL-1.12. See note 15 Plumbing Fixture Schedule note 15 on PL6.01. See Typical keynote, 26/PL1.12.

Question 13 Q: Provide hazardous material report noted on Sheet AD101, and Sheet GI-003 by Encorp (dated 4/2/20)

A: The hazardous material report will be provided as an attachment. See Attachment 14.

Comprehensive Hazardous Materials Survey.

Question 14 Q: If Contractor is responsible for moving existing FFE and equipment, provide quantities and photos of these items which are not shown on the plans

A: The VA will be responsible for removing all (E) FFE & Equipment.

Question 15 Q: Section 019100 requires commissioning of pneumatic tube systems but this trade is not included in the specs or drawings. Delete this requirement. Sheet AE-101 note 024100.K02 says "Pneumatic tube assembly to remain.

Modify as required (in Rm 1255)".

A: Concur, requirement to be removed from specifications.

Question 16 Q: When does the Microbiology and Administrative trailer need to be operational? Are these trailers supposed to be dismantled immediately after the end of the project?

A: Microbiology and Administrative trailers will need to be operational and functional prior to start of construction in the hospital and must be removed along with ramps, stairs, power, etc. after Pathology SOW is completed and occupied with a substantial completion occupancy.

Question 17 Q: Confirm that there are no wall or floor patterns for the ceramic tile installation in the restrooms

A: Confirmed.

Question 18 Q: Will fire sprinklers and fire alarms be needed for both modular buildings in the laydown area?

A: Please refer to the drawings and specifications.

Question 19 Q: Provide latest as-built drawings for these deferred approval trades: public address and mass notification system.

A: Please see Attachment 15. 1st Floor PA

Question 20 Q: The following sign types are missing details on Sheet AF-102: F, H.2, H.3, H.4, H.6, H.8.

A: Type F is shown on detail 13/AF-102. Types H.2, H.3, H.4, H.6, and H.8 are to use Type H. Contractor to provide signage package submittal to clarify.

Question 21 Q: Provide specifications for required CFCI computers (11 ea) shown on Sheet QH-106.

A: VA will provide a JSN (VA OFOI)

Question 22 Q: Provide specifications for required shelving storage, wired (5 ea) shown on Sheet QH-106.

A: VA will provide a JSN (VA OFOI)

Question 23 Q: Provide specifications for required garment hooks (22 ea) shown on Sheet QH-106.

A: VA will provide a JSN (VA OFOI)

Question 24 Q: Provide specifications for required writeable surface (2 ea) shown on Sheet QH-105.

A: VA will provide a JSN (VA OFOI)

Question 25 Q: Provide specifications for required clocks (9 ea) shown on Sheet QH-105.

A: VA will provide a JSN (VA OFOI)

Question 26 Q: Provide model number for required Labline Imperial III Incubator (1 ea) shown on Sheet QH-104. See https://www.colonialscientific.com/CS/index.php?cPath=84202

A: VA will provide a JSN (VA OFOI)

Question 27 Q: Provide specs for required microscope tv projector monitor (1 ea) shown on Sheet QH-104.

A: VA will provide a JSN (VA OFOI)

Question 28 Q: Provide details for Storefront Window Types: D, F.

A: Storefront types D and F are not referenced on AE-101, therefore are not detailed and will be removed from the storefront schedule on AE-802.

Question 29 Q: Provide new bid form that address the 14+ deductive alternates on Sheet GI-001. For Item A.2, you will need to break up this one line item further into 4 phased items.

A: Please submit one lump sum for the subject project. This solicitation will not include deductive alternates as part of the scope of work. The drawings and specifications will be revised to remove Deductive Alternates.

Question 30 Q: Confirm that both modular buildings are for sole use by the V.A. (and NOT for the GC or USACE).

A: Confirmed.

Question 31 Q: Currently three separate solicitations for the Department of Veteran's Affairs are due on 8 SEPT 2023 at 2:00 PM Pacific: two in San Diego and one in Long Beach. In order for both offerors and subcontractors to properly and thoroughly focus on each solicitation and prepare the strongest possible proposals, would you consider moving the bid due date by at least one week?

A: The bid due date is extended to Wednesday, September 13, 2023, at 2:00 P.M. (PDT). The public bid opening dial will remain unchanged: 1-205-235-3524, Phone Conference ID: 285-801-964#.

Question 32 Q: Is LEED certification a requirement of this project?

A: LEED certification is not a requirement for this project.

Question 33 Q: Provide structural as-builts above first floor work area so we can accurately calculate fireproofing on deck, beams, columns.

A: Structural record drawings are provided. Please see Attachment 16. Structural Drawings and Attachment 17.

Record Drawings.

Question 34 Q: Provide missing specs for metal decking.

A: Details 5, 6, and 7 on sheet S-6.1 added for slab opening details. Sheet S-1.2 has been updated to refer to detail 5/S-6.1, do not use detail 7/S-6.2 as previously stated at these locations. Please see Attachment 16.

Structural Drawings

Question 35 Q: Provide missing specs for site utilities (water; sanitary; gas).

A: Civil/site utility specifications were not included in the provided scope. Please refer to the details provided on Drawings C-5.0 and C-5.1.

Question 36 Q: Provide more details on Fiberglass grating walking platform shown on S-1.2.

A: Please see Attachment 18. Grating and Fall Protection Railing Criteria

Question 37 Q: Clarify quantity and location of MANUFACTURED TRAFFIC-CALMING DEVICES.

A: No permanent traffic calming devices are proposed. Temporary traffic calming measures needed during construction shall be determined by the contractor, with approval by the VA.

Question 38 Q: Provide location of pavement markings near the modular trailers.

A: No pavement markings are proposed.

Question 39 Q: Confirm if there is a 1/2" plywood cover board under the TPO roofing and over the 2 layers of polyiso insulation.

A: No.

Question 40 Q: Provide room location of temperature control room (CSI spec #13 21 29). Provide manufacturer's basis of design, and drawings.

A: For the location, please refer to Attachments D through F from the original solicitation. This section is about cold room, walk-in freezer, and other similar environmental controlled room. Specification division 13 is not

MEP.

Question 41 Q: I am writing in the hope that you can specify or apply our products for your project. I believe that the suicide-resistant healthcare products of Northwest Specialty Hardware, Inc. ( “Northwest”) can improve the safety and security of your facility project.

Please keep in mind these facts when making a decision:

(1) NW SecurityBar is listed in the “Design Guide for the Built Environment of Behavioral Health Facilities” published by the National National Association of Psychiatric Health Systems. (2) NW SecurityBar is accepted by the New York State Office of Mental Health and listed in “Patient Safety Standards, Materials and Systems Guidelines”. (3) Northwest is an organizational member of the U.S. Psychiatric Rehabilitation, and a registered healthcare vendor with CVS (Vendor Credentialing Service). (4) NW 805ADA 38-inch stainless steel mirror meets the requirements of the ADA compliance and suicide resistance in behavioral healthcare environments.

Please browse at https://northwestsh.com/behavioralhealthcare.html for more information on Northwest healthcare products.

A: The products referenced in RFI #41 is not applicable for the project.

Question 42 Q: Drawing Reference: EP-6.1, EP-6.2, 6.3,& EP-6.4 Single Line

Please provide confirm which panels are being replaced. Single line shows 1CEXB, 1CEXC, 1CEXGA, 1CEXG, 1CEXF, 1CEXN- 1, 1CEXM, MCC, 1A, 1XAA, 1XA, and 1XR to be removed and replaced using existing feeders. Provide confirmation if these panels will be replaced under this contract and provide panel schedules.

A: Single line Key note’s 1-3 on EP-6.1 to 6.4 identify which panels are to be removed, replaced or new.

Question 43 Q: Drawing Reference: EP-6.1, EP-6.2, 6.3,& EP-6.4 Single Line

Please confirm if circuit tracing will be required for panel boards that are shown to be removed and replaced in the Single Line Drawings. Will existing Panel Board Schedules information be sufficient information to provide to the VA for affected areas and equipment?

A: Circuit tracing will be a contractors choice means and methods approach. See response to RFI #42.

Question 44 Q: Drawing Reference: EP-6.1, EP-6.2, 6.3,& EP-6.4 Single Line

Please provide confirm if everything in bold will be new in the single line drawings. Single line has in bold 3 pole breakers in Panel Board EQ1A, Panel Board PP1CEX, and in panel Switchboard D1CEXA, please confirm that these are contractor furnished and contractor installed.

A: Confirmed, everything in bold on the single lines will be new and shall be furnished and installed by the contractor.

Question 45 Q: Drawing Reference: EP-6.1, EP-6.2, 6.3,& EP-6.4 Single Line

Please confirm if temporary power or provisions will be required for panel boards that are shown to be removed and replaced in the Single Line Drawings.

A: As indicated on single line(s) power to Emergency loads shall be maintained with temporary power. A temporary power plan will be required and submitted by the GC to the VA for review and approval.

Question 46 Q: Provide Model name for Tarkett's Solid Vinyl Floor Tile SVT-02 on Sheet AF-101. What is the intended product:

floor tile, or rolled sheet flooring?

A: SVT-02 is solid vinyl floor tile. Model is iQ Optima, color is soft cool beige 0209.

Question 47 Q: Since there will be four construction sub-phases, will we need to consider 4 instances of commissioning;

inspection periods; final cleaning mobilizations, etc?

A: Yes

Question 48 Q: This project is scheduled to bid on 9/8/23 @ 2pm which is the same date and time as two (2) other VA projects (36C26223B0014 and W912PL23B0009). Will the VA coordinate so that there is only one bid per day?

A: The bid due date is extended to Wednesday, September 13, 2023, at 2:00 P.M. (PDT). The public bid opening dial will remain unchanged: 1-205-235-3524, Phone Conference ID: 285-801-964#.

Question 49 Q: How much time does the VA require to take occupancy of a completed phase and vacate the next phase? This will be down time for the contractor and the time will need to be included in the scheduled time to complete the project.

A: 30 days and is subject to time scheduling change.

Question 50 Q: Project is proposing 360 calendar days to complete the project. Based the 5 proposed phased our company estimates this project will take closer to 24-30 months to complete. Please provide breakdown of how the VA came up with 360 or please allow for more construction time.

A: Please refer to Attachments A through F from the original solicitation.

Question 51 Q: Please verify one lump sum price is to be submitted at bid time and not broken into bid items and alternates listed in 01 00 00 1.3 Statement of Bid Items or deductive alternates on GI-001.

A: Please submit one lump sum for the subject project. This solicitation will not include deductive alternates as part of the scope of work. The drawings and specifications will be revised to remove Deductive Alternates.

Question 52 Q: Can the site superintendent have collateral duties and also be the SSHO or does the SSHO need to be a separate person?

A: No if the site superintendent manages the QC of the prime contractor. The SSHO cannot be a supervisor or Manager.

Question 53 Q: Please provide plans for the build-out of the Phase 2B “Temporary” spaces for architectural (flooring, ceiling, etc.), lighting, power, data, HVAC, plumbing, sprinkler.

A: Please refer to Attachments A through F from the original solicitation.

Question 54 Q: Please provide demo plans for the Phase 4A demolition of temporary spaces.

A: Please refer to Attachments A through F from the original solicitation.

Question 55 Q: For SVT-02 solid vinyl tile, there is no size provided in the finish schedule; however, according to the manufacturer's website, the SVT-02 specs are verified as roll material. Please clarify whether we will estimate roll material as per the manufacturer's website or as per the schedule, with a tile estimation of the standard size 12”x 12”.

A: For the sizing determination, please refer to Attachments A through F from the original solicitation.

Question 56 Q: For RSF-01 & RSF-02 sheet material, there are no sizes provided in the finish schedule, and these materials are verified as tiles on the manufacturer's website. Please clarify whether we will estimate tile material as per the manufacturer's website or as per the schedule, with a roll estimation of the standard size 6’.

A: For the sizing determination, please refer to Attachments A through F from the original solicitation.

Question 57 Q: PT-02 wall tile and PT-05 floor tile are provided in the finish schedule; however, they are not tagged in the drawings. Please clarify.

A: Concur, PT-02 and PT-05 are not used.

Question 58 Q: In the room finish schedule, CT is tagged on the walls in room “1251 HAC - JANC1”, and the elevation indicates a tile hatch; however, no finish detail is provided. Please clarify.

A: Details for interior walls with CT can be found on sheet AE902. See also wall types B6 on the floor plan and Attachment 19. VA SD Master Finish Legend.

Question 59 Q: Johnson Controls is able to provide VRU Units. These VRU Units would be equivalent to the Terminal Units found within the schedule, but would come completely configured and installed with a damper, air flow differential pressure sensor, hot water coil, with water strainer, balancing water valves, manual isolation valves and control valves. (The control valve can be selected for 3-way operation if desired). All controls within the unit are factory wired, mounted, and tested. The selections for these sensors can be altered to fit the Buy American requirements. The VRU will save lots of labor time, thus reducing cost of the overall project and will ensure that no one needs to be in the Asbestos Containing Environment longer than necessary. We are seeking approval to utilize these Johnson Controls VRU Units in Lieu of the Price/SDE5 units. Please confirm if this is permitted?

A: If JCI VRU units meet all characteristics or better than Price units, then JCI device is acceptable. Please note that JCI device are subject to VA final review.

Question 60 Q: Are Johnson Controls Standard Air Flow Measurement Stations approved in lieu of Ebtron Air Flow Measurement Stations?

A: If JCI Air Flow Measuring Station meet all characteristics or better than Ebtron, then JCI device is acceptable.

Please note that JCI device are subject to VA final review.

Question 61 Q: VFDs are not described in section 23900. Who is to furnish VFDs. The DDC Controls Contractor?

A: Contractor to check among divisions. VASD uses ABB and Dan Foss VFDs. JCI is the existing backbone DDC.

Additionally, VFD’s are mentioned on schedules and in 237300. Mechanical contractor to furnish VFD with equipment.

Question 62 Q: As per specifications section 230923 (PDF page 275) the site has an existing JCI DDC system so the server and OWS are assumed to be existing. Is a new Server and OWS needing to be provided?

A: Main JCI server is not in the scope of work for this project; All other SNE or similar devices would be required to complete the project.

Question 63 Q: Per note 1 for AC-101 THRU AC-103 in the control diagram, fan inlet AFMS was assumed factory provided.

Please confirm if this is true?

A: Specification 237300 requires airflow measuring device integral to the fan. Shall be provided with the Air Handling Unit (AHU).

Question 64 Q: Two (2) supply VAVs and two (2) Exhaust VAVs were found on the floor plans but not on schedules. Please confirm if these units are to be included in the scope of work?

A: Terminal units serving mechanical rooms (zones 35 and 36) are included in the scope of work. See Attachment 20. MH-6.03 Rev01

Question 65 Q: As per keynote #5 on the control diagram in drawing MH-7.03 (PDF page 74), one (1) BACnet integration will be included per each fume hood controller. However, it is unclear if the manufacturer will provide a factory controller. Please confirm?

A: Controller not listed as manufacturer-provided on specifications or schedules. Assume provided by controls contractor.

Question 66 Q: According to the control diagram, room temperature and humidity shall be monitored, however, as per the floor plans in drawing MH-1.12 (PDF page 16), only temperature shall be monitored. Please confirm?

A: Humidity sensors are not required in every room but are shown on MH-1.12 in zones 31, 32, 09, 23, 21, 18.

General Note B on same sheet references both temperature and humidity measurements.

Question 67 Q: Are Contact Barriers needing to be provided and wired to the exhaust fans controller's contacts?

A: The VA understands this question to be related to the spark resistant rating of the fume exhaust fans. The spark resistance rating applies to the airstream contained in the duct and fan casing. The fans are in an electrically unclassified location so the fan power wiring and contacts should be suitable for a that environment.

Question 68 Q: Based on floor plans in drawing MH-2.11 (PDF page 36), we are to provide the one (1) duct differential pressure sensor. It is not associated with any control diagram or sequence of operation within drawings. Please confirm if we are still needing to provide this?

A: Differential pressure sensors shown on supply and exhaust ducts on MH-2.11 are for controlling duct static pressure. Duct static pressure sensors are required in the locations shown and to meet the sequence of operations, additional differential pressure sensors are not required.

Question 69 Q: Please clarify demo of existing equipment for this project. Plans are unclear.

A: Demolition note #1 on AD-101 states “EXISTING EQUIPMENT IS NOT SHOWN ON PLANS. EXISTING EQUIPMENT SHALL BE MOVED, STORED, AND PROTECTED BY GENERAL CONTRACTOR PER DIRECTION OF VA.

COORDINATE REMOVAL OF EXISTING EQUIPMENT WITH OWNER OR VENDOR.” Contractor to perform site walk with VA to receive direction on equipment removal.

Question 70 Q: The call outs on specification 08 41 13 Paragraph 1.3 D 10 & 11 generally mean blast resistant material but it is not exactly specifying. Are the new exterior windows to be blast resistant?

A: Blast resistant is a maximum requirement. All storefronts except type A2 are tempered glazing.

Question 71 Q: Note 3 on Plumbing Drawing PL-2.12 and Note 7 on Drawing PL2.11 reference temporary fixtures but plumbing drawings do not show any temporary fixtures. Please provide a Fixture Schedule for Temporary Fixtures.

A: Please refer to Attachments B and C from the original solicitation for plumbing fixture model number and specifications. Complete plumbing scope of work is demonstrated in the entirety of the design documents. The VA will approve final fixture, faucet, and accessories prior to purchase and installation. The final location of temporary plumbing fixtures, piping, drains will coordinated with VA prior to installation. Temporary plumbing fixture pipe sizes to match connection size on lab consultants plumbing fixture schedule. Locate temporary fixture, supply lines, drains and vents as part of phased construction on GC sheets. Coordinate locations of fixtures within final fixture locations if possible. Relocate final location of fixtures, supply lines, drains and vents as part of each construction phase on GC sheets. See temporary plumbing utility phasing notes for details. GC are General Contract drawings provided in bid drawing set. See temporary Plumbing Utility Phasing Notes on sheet PL-1.12. See note 15 Plumbing Fixture Schedule note 15 on PL6.01. See Typical keynote, 26/PL1.12.

Question 72 Q: Please provide pipe sizes for temporary plumbing.

A: Please refer to Attachments B and C from the original solicitation for plumbing fixture model number and specifications. Temporary plumbing fixture pipe sizes to match sized on plumbing fixture schedule. Complete plumbing scope of work is demonstrated in the entirety of the design documents. The VA will approve final fixture, faucet, and accessories prior to purchase and installation. Locate temporary fixture, supply lines, drains and vents as part of phased construction on GC sheets. Coordinate locations of fixtures within final fixture locations if possible. Relocate final location of fixtures, supply lines, drains and vents as part of each construction phase on GC sheets. See temporary plumbing utility phasing notes for details. GC are General Contract drawings provided in bid drawing set. See note 15 Plumbing Fixture Schedule note 15 on PL6.01. See Typical keynote, 26/PL1.12.

Question 73 Q: Note 18 on Drawing PL-1.13 tells us to run a water supply line to a (new) water softener. Water softener is not shown. Please indicate location of water softener.

A: Provide inline water softener Pentair Pentek #150236 20” housing with #WS-20BB cartridge or equal. Provide online softener with mounting hardware and mount near Humidifier HU-103 in room A1011A. See MH-1.21 and 9/MH-7.08.

Question 74 Q: Note 18 on Drawing PL-1.13 goes on to say run softened water line to HU-103. HU-103 is not shown on plumbing drawings. Please indicate location of HU-103.

A: HU-103 is specified in mechanical design. Complete plumbing scope of work is demonstrated in the entirety of the design documents. See MH-1.21 and 9/MH-7.08.

Question 75 Q: Mechanical drawing MH2.17 shows a new AC-101 in the 1st interstitial mechanical room. Plumbing drawings for this same area do not show any floor drain or floor sinks for condensate, hydronic coil drains, etc. Please clarify the need for plumbing drains in the mechanical space.

A: Mechanical rooms are existing and existing floor drains are to be re-used.

Question 76 Q: Mechanical drawing MH2.18 shows a new AC-102 in the 1st interstitial mechanical room. Plumbing drawings for this same area do not show any floor drain or floor sinks for condensate, steam humidifier drain, etc. Please clarify the need for plumbing drains in the mechanical space.

A: Mechanical rooms are existing and existing floor drains are to be re-used.

Question 77 Q: Plumbing drawing PL-1.12 shows a new compressed air line running in the Core Lab beginning at a Compressor & Dryer Unit. There is no equipment tag for either. Equipment drawing QH-103 shows the dryer in this lab but not the compressor. Again, there is no equipment tag for the dryer. Please provide more information on this equipment including who is supplying this equipment.

A: Please refer to Attachments B and C from the original solicitation for plumbing fixture model number and specifications. Complete plumbing scope of work is demonstrated in the entirety of the design documents.

Coordinate piping and drain location with final lab equipment location indicated on lab equipment plan and schedule sheets QH-1.0 through QH-1.5.

Question 78 Q: Key Note 11 on Plumbing PL-1.12 says to “Drain DI water generator to wall box. See Detail 2 on PL6.1”. PL6.1 is not part of this drawing set. Wall box specified (P-812) is a supply box only and does not have a drain. Please clarify Key Note 11.

A: Drain DI water generator to sink with minimum 1” air gap. See 5/PL-5.02 for details.

Question 79 Q: Please provide Mechanical As-Built drawings for “Phase III Flow Cytometry” VA Project Number 664-14-427 [SRD Architects 2021-03-26] referenced on MI-0.01.

A: Mechanical As-Built drawings for “Phase III Flow Cytometry” VA Project Number 664-14-427 is provided as an attachment. Please see Attachment 21. DWGFINALSUBMITTAL

Question 80 Q: The control diagram for the modular building on MS-1.02 is identical to the pathology department diagram on MH-7.03. Please provide updated control details and sequences reflective of the required work on the modular trailer.

A: The diagrams and sequences are similar but not identical and are given as a basis of design only. Per general notes A, B, C, and D, the contractor is responsible for the actual system design. See also sheets AS-101, 102, 103, and 104.

Question 81 Q: Please clarify if the intent of the DDC and Laboratory controls is to utilize the same sensors, controllers and air valves in the modular trailer and transfer them to the pathology space.

A: That is not the intent. The intent is to build out the pathology labs in the hospital while lab operations are ongoing in the temporary modular trailers. This necessitates that the pathology lab mechanical systems are complete and functional prior to moving lab operations from the temp trailer to the hospital.

Question 82 Q: MH-6.01 through MH-6.03 doesn’t identify any equipment serving the module trailers. Please provide an updated schedule identifying which equipment serves the trailer or if the equipment has a dual use.

A: The equipment shown in the drawing schedules will be permanently installed and will not serve the temporary modular trailers. The contractor’s design-build engineer is responsible to develop the required equipment selections and schedules. See Attachment 20. MH-6.03 Rev01

Question 83 Q: MI-0.01 identifies tapping into existing AHUs to serve the pathology space temporarily. Will additional controls be necessary, such as differential pressure sensors, and can a drawing added to reflect the necessary modifications to existing units?

A: New AHUs will take over supply for an existing unit (temporarily) and will serve those terminal units according to the existing unit’s sequence of operations and duct static pressure sensor. New AHU’s will be installed completely, to include all controls, dampers, actuators, sensors, etc. necessary for operation. No new terminal units are being added to old AHUs. If the duct tie-in for the AHU takeover renders necessary existing sensors unusable, new ones shall be installed.

Question 84 Q: Drawing QH-104 shows a single gas tagged as H2, Dihydrogen Plumbing drawings do not show piping for this gas. Plumbing drawings do not include a regulator for this gas.

Please clarify the H2 requirements in the Microbology lab.

A: Not applicable. H2 usage and application not specified on lab consultant design documents QH-104. O2 usage, manifolds, piping and equipment connection will be coordinated with the VA.

Question 85 Q: Drawing QH-104 shows a bank of gas cylinders, at incubators MC119, MC120 & MC121. Five of these cylinders are indicated to be CO2, while two are O2. Detail 12 on plumbing drawing PL5.02 shows seven CO2 cylinders all connected to one changeover manifold.

Please clarify the CO2 manifold in the Microbology lab.

A: No common manifolds for CO2. No O2 manifolds. O2 usage and application not specified on lab consultant design documents QH-104. O2 usage, manifolds, piping and equipment connection will be coordinated with the VA.

Question 86 Q: There are many instances on the plumbing drawings where acid waste is being show connecting to sanitary vent. There are also instances of “mixed & match” venting, where both acid vent and sanitary vent are shown being tied together. This is in direct violation of California plumbing code, sections 811.2 & 811.6

811.2 Waste and Vent Pipes. Each waste pipe receiving or intended to receive the discharge of a fixture into which acid or corrosive chemical is placed, and each vent pipe connected thereto, shall be constructed of chlorinated polyvinyl chloride (CPVC), polypropylene (PP), polyvinylidene fluoride (PVDF), chemical-resistant glass, high-silicon iron pipe, or lead pipe with a wall thickness of not less than 1 of an inch (3.2 mm); an approved type of ceramic glazed or unglazed vitrified clay; or other approved corrosion-resistant materials.

811.6 Chemical Vent. No chemical vent shall intersect vents for other services.

Are we to correct these drawings during the bidding phase or bid the drawings as shown?

A: Acid waste pipe designation on plans are a legacy designation given to the piping in existing design documents. Per VA direction the existing lab acid waste collection service is to be utilized post remodel, acid waste will not be discharged to the any waste piping, acid waste neutralization is not required, and no acid waste system is required.

The project basis of design document dated 05/11/21 outlines the plumbing approach for the acid waste in the hospital and states: Site survey and investigation also found acid waste line the lab is collected by a hospital vendor and acid waste lines do not contain acid waste, so separation of sewer and acid lines and an acid neutralization system is not required.

Plumbing project summary located on sheet PI-0.01 also states, Existing lab acid waste collection service is to be utilized post remodel and no acid neutralization is required.

Project specification 22 13 00 - FACILITY SANITARY AND VENT PIPING, section 2.1.A.1.c says cast iron waste, drain, and vent pipe and fittings shall be used for interior waste and vent piping above grade.

Install cast iron waste and vent lines per project design documents and specifications.