Responses_to_Questions_Received-_FINAL_0004.pdf

Responses to Questions 1 through 27 were provided under Amendment Nos. 0001 and 0002.

Question 28:

Does the Rainwater need to be insulated? If so, insulation type and thickness

Response to Question 28:

Provide 1” thick fiberglass insulation with All Service Jacket

(ASJ).

Question 29:

Does the Non-Potable/Process water need to be insulated? If so, insulation type and thickness

Response to Question 29:

Question 30:

Does the Process Hot Water need to be insulated? If so, insulation type and thickness.

Response to Question 30:

Question 31:

Does there need to be a protective jacket over any insulated systems?

Response to Question 31:

Provide PVC cladding for exposed piping in mechanical rooms.

Question 32:

Outside air duct insulation is under the “General” but not in the schedule. Please verify what material type and thickness for outside air duct

Response to Question 32:

Provide 3” thick fiberglass insulation with ASJ.

Question 33:

In regards to the filtration system and associated piping referenced on keynote 22.105 drawing

P107 and keynote 22.104 drawing P204, I cannot find any specification, detail, schedule or drawing defining what is actually required. (ie. Equipment schedule)

Please advise on what equipment is required.

Response to Question 33:

Marlo Systems or equal – green sand filtration system with 6” fittings for 150 GPM continuous flow, skid mounted, alternating for regeneration with flow meter to activate regeneration time – unit online at all times. Green sand media designed to remove manganese from the water without the use of oxygen or chlorine addition. Filtration system to include start-up and on-site training.

Contact: Greg Gehrke Gehrke Technology Group

847-487-9110

Question 34:

D400, D401, and D701 all state to demolish existing precast panel, is the Government sure that the precast panel should be demolished, it appears that the roof would fail?

Response to Question 34:

The design team has discussed this at great detail. We believe that the bush-hammered fluted panel is attached to the CIP wall per the detail below. Nonetheless, the intent of this is to provide a flat surface on which to mount the structure for the new roof and keep the eight inches (8”) of

CIP structural wall but remove the flutes. Please include in your demolition bid a cost to provide a flat surface on which to mount the structure.

Question 35:

D401 shows segment B connecting to Segment A twice, please explain why there is no info on how we should connect to Segment C, since that section will have stone capping?

Response to Question 35:

Typo. See below:

Question 36:

The same for A401.

Response to Question 36:

Typo. See below:

Question 37:

The current pricing breakout will not equal the total bid. There is no place for Section C or D, lower A or B, the metal siding, G building or the roof work. Is there a new breakout for pricing?

Response to Question 37:

Pricing must be submitted in accordance with the solicitation, (refer to Section B Supplies or

Services and Price/Costs and Section L.13. 52.236-28 Preparation of Proposals – Construction).

Pricing is not identified by facility segment.

Question 38:

The plans call for the removal of the stone capping on the roof of section A and B, but not section C. How should the transition be made and what should we do with the electrical that is attached to the capping?

Response to Question 38:

The electrical conduit and wiring need to be removed as required for stone capping removal and new conduit and wire provided to connect back to the existing.

Question 39:

Has the Government thought about using the same type of tiles that were used in the FHL so that they can reduce maintenance and storage costs? The same could be said for the LVT flooring.

Response to Question 39:

Offerors shall bid requirements based on the specifications, drawing, amendments, and terms and conditions contained within the solicitation.

Question 40:

A616c what is the red lettering for?

Response to Question 40:

Disregard. This will be removed from the Issued for Construction (IFC) set

Question 41:

In spec section 08 43 13 what is the basis of design and what is the thickness of the metal for the glass?

Response to Question 41:

Please follow information listed on page 16 of the Structural Calculations, Appendix D (below):

i.

Question 42:

A901 list the window schedule, can this be explained? I can’t find where the ”type Mark” is referenced in the drawings.

Response to Question 42:

Disregard A901

Question 43:

Can a drawing be provided with more detail on the curtain wall/store front installation?

Response to Question 43:

The design drawings show intent for bidding purposes. The shop drawings should illustrate the full system as specified in the project manual.

Question 44:

The Glass specs don’t state a lot about the glass. What is the makeup, style, any finishes, or any other customer desires?

Response to Question 44:

This is on the last page of the specification. Please let us know if there is information you need not listed here:

Question 45:

A955 list LVT 1 in separate areas, but shows different styles. What is requested?

Response to Question 45:

The drawing shows the orientation of the tile.

Question 46:

E510 call for a new rood opening in segment a and b. I am assuming this is a roof opening? Also, the new opening for Segment B appears to be drawn over existing piping. Can the location be moved?

Response to Question 46:

Conduits should be removed and relocated. Field-verify electrical loads within existing conduits.

Question 47:

Will the govt allow submission of an alternate proposal, which facilitates potential improvements and cost mitigation strategies based on the govt requirements?

Response to Question 47:

Reference L.13, 52.236-28 Preparation of Proposals – Construction (d))

Question 48:

Can the Government confirm that the bids that are received on the 22nd are for final pricing, not for planning purposes?

Response to Question 48:

Final pricing

Question 49:

When it comes to demo, there are quite a few things it seems in the NIC portion. For example

(ED204) shows a lot of motors to be demoed. Am I to assume anything in bold/dotted even if in

NIC area is still to be demoed? There are quite a few others on numerous pages of the prints. Just looking for confirmation.

Response Question 49:

Anything in NIC areas should be existing to remain/no work, unless specifically noted otherwise. Equipment is shown for information only in non-NIC areas. Refer also to mechanical and plumbing demolition plans.

Question 50:

I believe the mechanical contractor is supply VFD’s for the exhaust fans, we will have to mount them & wire them. I do not see on the plans where any of these VFD’s are to be mounted.

Looking for some guidance/locations.

Response Question 50:

The VFD’s shall be located in the mechanical cores. Coordinate the location with conditions in the field. A number of starters associated with demolished fume hood exhaust fans are being removed. It is expected the removal of these will free up adequate space for VFD’s.

Question 51:

Please see the clouded area on the attached drawing. (File: OST3X Image) The key calls out the kitchen as being LVT-1 (highlighted in orange) but the finish pattern shows this as being LVT-2.

Which product should be bid in this area?

Response to Question 51:

Please follow the hatch pattern. The Kitchen should be LVT-02

Question 52:

Questions on the fire protection. Some of the notes refer to a dry system. A few of the notes refer to a pre-action system. But all on the same systems. These are 2 completely different types of systems. Can you get this clarified?

Response to Question 52:

A new double interlock, pre-action system/zone for the second floor of Seg. A, B, and will be provided to match the existing pre-action system used for Seg. D

Question 53:

On page FP000 at the top of the “Notes” box it says branch line and main piping is to be

Galvanized steel pipe and note #11 says “all piping shall be black steel”. The spec also calls out both types of pipes. Please clarify.

Response to Question 53:

Galvanized steel piping shall be used to match the existing.

Question 54:

On page 21 13 16-15 of the spec book under 3.11-A-3 it says to install Dry concealed sprinklers in rooms with suspended ceilings. Should we be pricing Dry pendants for all suspended ceilings?

Response to Question 54:

Provide dry pendants for all suspended ceilings.

Question 55:

Is there any CAD or BIM modeling that is required for the Div. 26,27, or 28?

Response to Question 55:

No. However, coordination/shop drawings need to be developed for all trades during coordination with other trades and shop drawing preparation. Electrical systems to be installed free of interference with all other systems in the coordination effort – electrical systems take lower priority over mechanical, plumbing, and fire protection systems.

Question 56:

On the Plumbing demo page they call out Jet rod storm and waste system, s jet rodding the only acceptable way to clean the sewer or are we able to clean the sewer with a traditional machine using cables?

Response to Question 56:

Jet rodding method to be utilized for cleaning the storm and waste systems.

Question 57:

On the Plumbing demo page Televise/scope to verify piping is free of debris after jet rodding and provide owner findings report of condition and USB flash drive with televised scoping of storm and waste piping system. Is it the intent to clean and scope the entirety of the plumbing lines including all branch lines or only the mains?

Response to Question 57:

The intent is to scope all the underground mains, from each of the floor clean outs to the point where the underground piping systems exit outside the building.

Question 58:

There are two notes on M103 that read, “Contractor to provide new terminal units for supply and general exhaust to accommodate the new room requirements”. It is unclear if this work is above and beyond the work already indicated so we do not have any work that is not shown on the plans.

Response to Question 58:

It is still unclear what the contractor is asking. In our attempt to interpret the information provided we believe the contractor is attempting to suggest a substitution for a specified product.

All requests for substitutions must follow the project manual procedures contained under Section

01 25 00 Substitution Procedures. All requests for substitutions were due on 3/10/2022.

Question 59:

Keynote 23.40 on sheet M101 indicates, “Provide hood above acid bath. Chicago Plastic

Systems 36x36 mounted at 6’8”. 1000 CFM provide air control, switch, dampers, light.” There is no specification that we could locate for this particular hood. Based off the description, we have made a good faith effort in determining what this unit is by discussing with Chicago Plastic

Systems. This isn’t a high dollar item, but we did want to identify a gray area.

Response to Question 59:

There is not a specification section for this item. The notes in the keynote should suffice for bidding purposes.

Question 60:

The equipment schedule and specifications show HEPA filter requirements for all supply diffusers, TDCR. These filters and diffusers are extremely costly. Are we to include?

Response to Question 60:

Yes

Question 61:

The plans equipment schedule identifies EF-20 & 21 which appear to be for building G. There is no work shown in building G.

Response to Question 61:

Contractor to disregard EF-20 & EF-21 on schedule. Work associated with Building G was removed from the Solicitation.

Question 62:

Cleaning of the existing ductwork system, air handler, etc. is called out in the specifications. If this requirement could be removed, it would be a savings.

Response to Question 62:

Offerors shall bid the contract documents as written.

Question 63:

On the equipment schedule, the Fume Hood Exhaust Terminal Units indicate to “Provide specialized construction to accommodate fume hood exhaust.” We are unable to locate what this specifically entails. We have made a good faith effort in determining what construction should be used but there may be a savings if this was defined in greater detail. We currently have plugged Model VFX – High Accuracy Air Terminals along with the CAVA fume hood face velocity controller. The controllers come with a hood mounted color touch screen monitor with visual and audible alarms, sidewall or sash position sensors. If this is already covered under the fume hood vendor than there will be a savings involved. The terminal units we have selected have spun aluminum housing, SS damper blade and shaft, PTX flow transducer, Belimo 24V actuator, and are phenolic coated with a flanged connection.

Response to Question 63:

Offerors shall submit as substitution request to USGS for specific product information All requests for substitutions must follow the project manual procedures contained under Section

01 25 00 Substitution Procedures. All requests for substitutions were due on 3/10/2022.

Question 64:

No seismic rating, no deflection track at curtain wall head, no windborne debris impact resistance at glazing, Response to Question 64:

Please see clarifications from the documents below. Midspan receiver is shown on architectural details. Structural questions are in the structural calculations.

Question 65:

Reference Fume Hood Schedule on Sheet A990. Several hoods show Hot Water and Cold Water with a single Cupsink. Some show Note 5 - Double External Mounted Vacuum Breaker.

a. Please confirm a H/C mixing faucet with a single cupsink shall be used in hoods when both hot and cold water fixtures are designated and Note 5 is not applied.

Response to Question 65 a:

Fume hood 7 should have a cup sink. If both hot and cold water are required, assume it is a mixing faucet with one vacuum breaker. If there are multiple sinks with mixing faucets, multiple vacuum breakers will be necessary.

b. Please confirm if Hot Water and Cold Water fixtures are to be separate, a vacuum breaker and cupsink is required for each fixture.

Response to Question 65 b:

Assume mixing faucet

Question 66:

Reference Fume Hood Schedule on Sheet A990. FH-14 and FH-15 Reference Note 9 – Snorkel.

Snorkels are mounted within the room and not inside of fume hoods.

Please confirm a snorkel is not required in any fume hoods.

Response to Question 66:

Snorkels should not be inside the fume hood. Assume snorkel to be at the centerline of the fume hood in the center of the room. Assume typical details for mounting snorkel per other snorkels shown on the reflected ceiling plans.

Question 67:

Reference Fume Hood Schedule on Sheet A990. Several fume hood locations as elevated do not align with the base cabinet configurations called out in the schedule.

Please confirm the cabinet designations as called out on the Fume Hood Schedule should take precedence over the elevations.

Response to Question 67:

See below:

Question 68:

Reference 122553/2.3/B/2. No type or finish is called out.

Please confirm all stainless-steel items (tops, sinks, legs, strut, etc.) are type 304 with #4 finish

Response to Question 68:

Type 304 with a #4 finish will suffice.

Question 69:

Reference finish schedule on sheet A950 and drink rails detailed at 6 & 7/A851.

Please confirm drink rails should be included with SS-02 type solid surface per finish schedule on sheet A950 in lieu of SS-04 as noted at elevation 6/A851

Response to Question 69:

Please match finish schedules

Question 70:

M201 shows new mechanicals coming to the new Fridge/Freezer A-214b/d, but no mechanicals coming to the new freezer A205a, please clarify.

Response to Question 70:

Provide mechanicals for the new freezer in A205A. They will be consistent with the mechanicals in A-214b/d.

Question 71:

A600A Detail 1 shows the freezer having two tags, 3 on A851 and 11 on A851, I am assuming it is only supposed to have the 11 on A851 tag, but please clarify.

Response to Question 71:

One at wall. One at door.

Question 72:

We could not find the Appendix G Radioactivity-Use Areas 2020 Map in the documents. Can this be provided? We are assuming that this document will clarify the extent of radioactive material that needs disposal.

Response to Question 72:

See attachment(s) Appendix G – Map1 and Appendix G – Map 2. Highlighted areas represent labs that have had radioactive research done in them in the past.

Question 73:

Could existing building drawings be provided?

Response to Question 73:

Offerors shall utilize the Solicitation Documents and supplemental Amendments in preparing their bid.

Question 74:

Does the existing roof have a warranty? Do we need to find the original installer to do the patching to maintain a warranty?

Response to Question 74:

See attachment document “Roof Warranty.pdf”. Contractor shall follow manufacturers guidelines and additional requirements outlined in the warranty documentation to avoid voiding the manufacturer's warranty.

Question 75:

Detail 4B/S300 shows the roof access opening (cut out detail). The note at the detail indicates to see architectural. Section 1/S300 shows the detail 4B/S300 at the sloped roofs on the 1st floor and 2nd floor. Architectural drawings show the access openings only on the upper floor reflected ceiling plans. Are there any access openings in the lower level ceiling/roof? Do the openings need to have access door or are they only opening? The drawings also call out transfer air terminals to be cut in. Is there a quantity of air transfer terminals needed?

Response to Question 75:

Transfer air openings shall be one every twenty feet.

Access panels should be provided at the lower level in the same place as shown on the upper level RCP’s at Segment A South and East facades, and Segment B South, East, and North

Facades.

Question 76:

Does the wood rail along the existing curtain wall windows remain?

Response to Question 76:

Existing wood rail to be demolished.

Question 77:

Is there any way possible to get another site visit to review the asbestos abatement?

Response to Question 77:

Due to time constraints, the Government will not be allowing additional site visits as part of this

Solicitation.

Question 78:

Does segment B have stone coping to be removed from the parapet? The stone coping removal is called out on the area A roof demolition plan but not on the segment B roof plan.

Response to Question 78:

Please remove stone coping at Segment B per detail 3/D701

Question 79:

Can a detail for the new roof to wall transition at the ends where the stone coping remains?

Response to Question 79:

Please base your bid griding out the bush-hammered flutes where you will attach a runner channel. This would require roughly an 8”-10” strip of flat concrete wall on which to mount your runner channel on all three faces of the wall where the new roof is attaching.

All stone copings on all three faces should be removed at the new roof tie-ins per the contract documents.

Question 80:

Are repairs described at detail 9 and 10 on S301 to be included in this proposal?

Response to Question 80:

Yes

Question 81:

The angle frames for the supporting the openings in the roof deck extend beyond the opening. In some case there is electrical conduit that conflicts with the angle frame that will have to be relocated. Can contractors engineer a different support system to avoid some of the relocations?

Response to Question 81:

Yes, contractor can relocate conduit or engineer the new support system to avoid conflicts.

Question 82:

Do the new void spaces created by infill the outside wall need to have fire sprinkler coverage?

Response to Question 82:

No sprinklers

Question 83:

In the 23 07 13 the description of the mineral fiber blanket - (E. Mineral-Fiber Blanket

Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C

553, Type II and ASTM C 1290, Type III with factory-applied FSK jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article) this type of insulation is

1# or 1.5# density flexible duct blanket but in the insulation schedule it calls for 3# density blanket. This 3# density blanket would be a semirigid fiberglass. Which type of insulation are we to use? 1#

Response to Question 83:

Refer to Question 85 Response

Question 84:

Since bid date got extended do have additional extended time to get all PPQs in? Please confirm.

Response to Question 84:

PPQ’s will be accepted through offer due date.

Question 85:

1) In the 23 07 13 the description of the mineral fiber blanket - (E. Mineral-Fiber Blanket

Insulation: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C

553, Type II and ASTM C 1290, Type III with factory-applied FSK jacket. Factory-applied jacket requirements are specified in "Factory-Applied Jackets" Article) this type of insulation is

1# or 1.5# density flexible duct blanket but in the insulation schedule it calls for 3# density blanket. This 3# density blanket would be a semirigid fiberglass. Which type of insulation are we to use? 1# density flexible mineral fiber blanket or the 3# density semi-rigid pipe and tank insulation?

Response to Question 85:

We are looking for 1# or 1.5# density blanket to be employed.

Question 86:

There are conflicting specs/notes see page M203 note 7- says to use fiberglass for the refrigeration but the specs schedule calls for 1" thick flexible elastomeric insulation. Which type are to use?

Response to Question 86:

Refrigerant piping should be 1” thick flexible elastomeric.

Question 87:

Indoor ductwork jacketing- Please confirm if you want all the ductwork that is insulated in the concealed spaces to have an addition .024 metal jacketing installed.

C. Ducts and Plenums, Concealed: 1. Aluminum, Smooth, 0.024 inch thick.

D. Ducts and Plenums, Concealed: 1. Aluminum, Smooth, 0.024 inch thick.

Response to Question 87:

No cladding is needed in concealed locations.

Question 88:

Indoor piping jacketing- Please confirm if you want all the piping that is insulated in the concealed spaces to have an addition .030 pvc jacketing installed.

C. Piping, Concealed:

1. PVC 30 mils thick.

D. Piping, Exposed:

1. PVC 30 mils thick.

Response to Question 88:

Concealed piping does not need cladding.

Piping exposed to view needs cladding.

Question 89:

The wage determination sheet for the Heat & Frost Insulators show that it has not been updated since 2002. Prevailing wage rates for for this category is not accurate. Can this be updated to reflect the actual La Crosse, Co. prevailing wages for Heat & Frost Insulators?

Response to Question 89:

General Decision WI20220003 has been updated with Modification 5 dated 02/25/2022 and attached hereto as part of this amendment.

For questions regarding rates on wage determination refer to Davis-Bacon and Related Acts (DBRA)

Frequently Asked Questions, specifically Section V. Appeal Process: FAQ #36.

Davis-Bacon and Related Acts (DBRA) Frequently Asked Questions | U.S. Department of Labor

(dol.gov) https://www.dol.gov/agencies/whd/government-contracts/construction/faq#36

Question 90:

The description on the builders exchange site states " Replace damaged or deteriorated insulation and associated piping in the Segment boiler room and upper and lower corridors serving the

Segment A and B laboratory spaces". Is the "deteriorated insulation" that is to be replaced shown on the plans or are we to complete that work as T&M and not include anything in the proposal? Please advise.

Response to Question 90:

The piping with damaged insulation is being removed as the damage to the insulation has resulted in failed piping. The repair to the failed insulation is to replace the piping and insulate the new piping. There should be no time and material effort for this scope.

Question 91:

We are assuming that all rooms scheduled with new flooring will have the existing floor removed. Some rooms shown to have new flooring do not have the corresponding flooring demo noted.

Response to Question 91:

Flooring is to be demolished where new floors are shown.

Question 92:

The 8800 specification calls for Windborne Debris Impact Resistance glazing. Please verify this is correct.

Response to Question 92:

Correct

Question 93:

Does the glazing need to have seismic rating?

Response to Question 93:

Please see Appendix D, Structural Calculations

Question 94:

Is the H & J smoke seal to be used at the existing doors indicated to the receive pressure seals noted on A900?

Response to Question 94:

Yes

Question 95:

Do we need to replace the flooring in entire rooms such as A-110, A-112, A-113, A-114 and similar areas after the u/g plumbing work is done?

Response to Question 95:

Yes

Question 96:

Have the labs that require Lab Pressure Testing already passed a pressure test? Basically do we have to only seal up new work or do we have to plan to seal all existing conditions.

Response to Question 96:

Existing laboratories currently meet pressure requirements. Contractor shall be responsible for sealing up and pressure testing all new work in Upper A and Upper B laboratories, and any

Lower Level laboratories where fume hoods are being replaced.

Question 97:

There are notes on the plans to use epoxy mortar to level and fill. Is this the same as the

Hydraulic Cement Underlayment that is in the specifications? We could not find the Hydraulic

Cement Underlayment called out.

Response to Question 97:

Hydraulic Cement Underlayment is for areas that do not have epoxy flooring and where floor leveling is required (ie. new LVT flooring).

Question 98:

We could not find the Appendix G Radioactivity-Use Areas 2020 Map in the documents. Can this be provided? We are assuming that this document will clarify the extent of radioactive material that needs disposal.

Response to Question 98:

Refer to Question 72

REVISIONS TO SPECIFICATIONS:

Specification Section 07 21 00 Thermal Insulation:

Insert the following Paragraphs:

2.4 MINERAL-WOOL BLANKET INSULATION

A. Mineral-Wool Blanket Insulation, Unfaced ASTM C665, Type I (blankets without membrane facing); consisting of fibers; passing ASTM E136 for combustion characteristics.

1. Manufacturers:

a. Rockwool

b. Owens Corning

c. Johns Manville

2. Flame-Spread Index: Not more than 25 when tested in accordance with ASTM E84.

3. Smoke-Developed Index: Not more than 50 when tested in accordance with ASTM E84.

2.5 MINERAL-WOOL BOARD INSULATION

B. Mineral-Wool Board Insulation, Types IA and IB, Unfaced

ASTM C612, Types IA and IB; passing ASTM E136 for combustion characteristics.

1. Manufacturers

a. Rockwool CavityRock

b. Owens Corning RainBarrier

c. Johns Manville MinWool Curtianwall

Insulation

2. Nominal Density: 4 lb/cu. ft. (64 kg/cu. m).

3. Flame-Spread Index: Not more than 15 when tested in accordance with ASTM E84.

4. Smoke-Developed Index: Not more than zero when tested in accordance with ASTM E84.

Renumerate the following Paragraph:

2.4 ACCESSORIES is changed to 2.6 ACCESSORIES

Specification Section 22 11 16 DOMESTIC WATER PIPING:

Subsection: 3.11.D is revised to read:

D. Aboveground domestic and process water piping, all other water piping, shall be:

1. Cold Water Supply Piping: PVC, Schedule 80; socket fittings; and solvent-cemented joints.

2. Hot Water Supply Piping: CPVC, Schedule 80; socket fittings; and solvent-cemented joints.