B11_Site_Visit_-_QA_document_0003.docx

Question Answers PULL – Tower Buildout, 140P6226B0002

1. Question/Resolution Requested: Please identify the controlling project name and street address to be used for bidding, permits, insurance, bonds, deliveries, correspondence, and site access.

Answer: 610 E. 111th Street, Chicago, IL 60628

2. Question/Resolution Requested: Please confirm that 245 calendar days after the Notice to Proceed is the controlling period of performance and issue corrected calendar dates for all bid schedule and delivery fields.

Answer: 245 calendar days from the Notice to Procced is correct. Actual dates of the work to be performed is dependent on the award process and we are unable to give exact dates.

3. Missing Submittal Administration Sections and Incomplete Submittal Register Subject: Unissued submittal procedures and omitted register sections Drawing/Spec Reference: Specifications Table of Contents; technical sections referencing Sections 01 30 00 and 01 33 00; Attachment 3, Submittal List, referencing Section 01 33 23; issued specification sections containing explicit submittal requirements.

Conflict/Gap: The issued documents direct the Contractor to Sections 01 30 00, 01 33 00, and 01 33 23 for submittal procedures, but none is included in the project manual. Attachment 3 also omits 13 issued sections that contain explicit submittal requirements: 01 10 00, 08 71 00, 21 05 00, 21 05 23, 22 00 01, 22 05 17, 22 05 29, 22 05 53, 23 00 01, 23 05 53, 23 21 13, 28 13 00, and 28 23 00. The omissions affect routing, review periods, resubmittals, action versus informational status, and the completeness of the project submittal register.

Question/Resolution Requested: Please provide the referenced Division 01 sections or confirm that Section 01 10 00 contains the complete governing procedure. Issue a corrected, comprehensive submittal register that includes all issued sections with submittal requirements and identifies routing, review durations, resubmittal requirements, action or informational status, and required use of CM-16 or other NPS forms.

Answer: Section 01 10 00 and the requirements of the FAR contain the complete governing procedure. Attachment 3 is complete and does not omit the referenced sections. Any references throughout the specifications to sections beginning with “01” that are not included in the bidding documents are to be directed to Section 01 10 00, the requirements of the FAR, and the other bidding documents.

4. Missing Quality Requirements and Special Inspection Administration Subject: Section 01 40 00 and special-inspection requirements are incomplete Drawing/Spec Reference: Attachment 4, Statement of Structural Tests and Special Inspections, Instructions and Required Qualifications column; Specifications Table of Contents and technical references to Section 01 40 00.

Conflict/Gap: Attachment 4 directs the completed statement to Section 01 40 00, and multiple technical sections reference that section, but Section 01 40 00 is not issued. The special-inspection tables also do not populate the required qualification designation for each selected inspection.

Question/Resolution Requested: Please provide Section 01 40 00 and a completed special-inspection qualification matrix. Clarify inspection procurement and payment responsibility, reporting and nonconformance procedures, required certifications, and acceptance authority.

Answer: See reissued attachment 4, Statement of Structural Tests Special Inspections. Special inspections shall be contractor-arranged, owner-directed. Prime contractor to be responsible for scheduling, coordinating access, and paying for special inspections. Special inspection agency to be pre-approved by owner, report directly to the owner, and take no direction from the contractor. Any findings of nonconformance shall be corrected and reinspected until conformance is achieved at no cost to the owner. Final acceptance lies solely with NPS as required by the contract.

5. Missing Product and Substitution Requirements Subject: Section 01 60 00 Product Requirements is not issued Drawing/Spec Reference: Specifications Table of Contents and technical-section references to Section 01 60 00 Product Requirements.

Conflict/Gap: Numerous technical sections direct bidders to Section 01 60 00 for substitutions, product requirements, and maintenance materials, but the section is not included in the project manual.

Question/Resolution Requested: Please provide Section 01 60 00 or identify the complete governing procedure for pre-bid and post-award substitutions, approved-equal evaluation, product options, and maintenance-material quantities.

Answer: Section 01 10 00 and the requirements of the FAR contain the complete governing procedure. Any references throughout the specifications to sections beginning with “01” that are not included in the bidding documents are to be directed to Section 01 10 00, the requirements of the FAR, and the other bidding documents.

6. Missing Closeout, Waste, Training, and Maintenance Sections Subject: Referenced Division 01 closeout sections are not issued Drawing/Spec Reference: Specifications Table of Contents and references to Sections 01 70 00, 01 74 19, 01 78 00, and 01 79 00.

Conflict/Gap: Technical sections reference execution, construction-waste, closeout-submittal, demonstration, training, warranty, and maintenance requirements assigned to four unissued Division 01 sections.

Question/Resolution Requested: Please provide the referenced sections or issue complete requirements for record documents, operation and maintenance manuals, warranties, training, demonstrations, waste documentation, spare materials, and final closeout.

Answer: Section 01 10 00 and the requirements of the FAR contain the complete governing procedure. Any references throughout the specifications to sections beginning with “01” that are not included in the bidding documents are to be directed to Section 01 10 00, the requirements of the FAR, and the other bidding documents.

7. Referenced Technical Specification Sections Not Issued Subject: Multiple technical cross-references do not resolve to issued sections Drawing/Spec Reference: Specifications Table of Contents and cross-references to Sections 03 30 00, 05 50 00, 06 20 00, 08 11 00, 08 14 00, 08 31 00, 09 90 00, 09 91 13, 21 12 00, 22 05 13, 23 05 13, 23 05 16, 23 09 34, 23 25 00, 23 33 19, 26 05 19.13, 26 05 36, 26 05 73, 27 15 00, and 33 01 10.58.

Conflict/Gap: The listed sections are referenced by issued technical requirements but are absent from the project manual. The missing references affect concrete, metal fabrications, access panels, mechanical and electrical components, controls, communications, and system testing.

Question/Resolution Requested: Please provide the missing sections, identify the intended replacement section for each reference, or confirm each reference is not applicable to this project.

Answer: Sections 05 50 00, 06 20 00, 08 11 00, 08 14 00, 08 31 00, 09 90 00, 09 91 13, 21 12 00, 22 05 13, 23 05 13, 23 05 16, 23 09 34, 23 25 00, 23 33 19, 26 05 19.13, 26 05 36, 26 05 73, 27 15 00, and 33 01 10.58 are not applicable to this project. Section 03 30 00 is located on the structural drawing sheets.

8. Missing Countertop Specification Section 12 36 00 Subject: Countertop materials and fabrication requirements are undefined Drawing/Spec Reference: Specification Section 06 41 00, Paragraph 2.04.A; Specifications Table of Contents; Drawings A502 and A503.

Conflict/Gap: Section 06 41 00 states, "Countertops: See Section 12 36 00," but Section 12 36 00 is not issued. The drawings show countertop locations but do not provide a complete material, thickness, finish, edge, backsplash, or fabrication standard.

Question/Resolution Requested: Please provide Specification Section 12 36 00 or define the required countertop and backsplash material, thickness, finish and color, edge profile, supports, joints, cutouts, and installation requirements.

Answer: REVISE Specification Section 06 41 00 Architectural Woodwork, Paragraph 2.04_D:

Countertops: Wilsonart Bluestone 9074EA or approved equal Composition: Acrylic resins, fire-retardant mineral fillers, and proprietary coloring agents. Through-the-body color for full thickness of sheet material.

Tensile Strength: [6800 psi]; ASTM D 638 Flexural Strength: [10,000 psi]; ASTM D 790 Thermal Expansion Coefficient: 1.37 x 105 in./in.oF; ASTM D 696.

Impact Resistance: [144 in.] drop with no fracture; NEMA LD-3, Method 3.8 Stain Resistance: Pass; ANSI Z 124.3, modified. 12. Wear and Cleanability: Pass; ANSI Z 124.3.

Moisture Absorption: Less than 0.25 percent; ASTM D 570, long term

Accessory materials Joint Adhesive: Methacrylate-based adhesive for chemically bonding solid surfacing seams. Color complementary to solid surfacing sheet material. UL 2818 GREENGUARD Gold certified and complies with SCAQMD Rule 1168.

Siliconized Acrylic Sealant: Siliconized acrylic latex sealant. For general applications to fill gaps between countertops and at terminating substrates. Complies with ASTM C 834, Type OP, Grade NF, and SCAQMD Rule 1168. 1.

9. Card Access Doors and Electrified Hardware Subject: Access-control devices are not coordinated with the door hardware sets Drawing/Spec Reference: Drawing E202; Drawing A301 Door Schedule; Specification Section 08 71 00, Hardware Groups 02, 07, and 08; Specification Section 28 13 00.

Conflict/Gap: Drawing E202 indicates card-reader access at Doors 209, 211, 217, 219, and 220. A301 assigns these openings to Hardware Groups 02, 07, and 08, which specify mechanical mortise locks and cylinders without an identified electrified lock, power transfer, power supply, or Division 28 interface.

Question/Resolution Requested: Please issue revised hardware sets and access-control details for these openings. Identify the required locking function, fail-safe or fail-secure operation, door position and request-to-exit devices, power-transfer method, power supply, cabling, and Division 08, 26, and 28 furnish-and-install responsibilities.

Answer: See updated door schedule and door hardware groups in the addendum. Electrical power-transfer method, power supply, and cabling to be as required by the contractor’s vendor. The contractor is required to furnish and install a completely functional system in accordance with the drawings, specifications, and NPS guidelines. There is no electronic access control for doors 209, 219, or 220.

10. Flush Wood Door Glazing Stop Requirement Subject: Blank glazing-stop specification parameter Drawing/Spec Reference: Specification Section 08 14 16, Paragraph 2.04.D, PDF Page 44.

Conflict/Gap: The glazing-stop requirement is issued as, "Glazing Stops: ______, butted corners; prepared for countersink style tamper proof screws." The stop material and profile are not identified.

Question/Resolution Requested: Please provide the required glazing-stop material, profile, finish, removable side, fastener finish, and any security or fire-rating requirements applicable to the glazed wood doors.

Answer: REVISE Specification Section 08 14 16 Flush Wood Doors, Paragraph 2.07_D:

Glazing Stops: Wood, of same species and finish as door facing. Provide flush square/kerfed profile with mitered corners.

11. Hydronic Flexible Pump Connector Movement Requirements Subject: Blank axial and lateral movement criteria Drawing/Spec Reference: Specification Section 23 21 14, Paragraph 2.05.A.2, PDF Page 238.

Conflict/Gap: The flexible pump connector criteria require 150 psi service and 15-degree angular rotation, but the axial compression and expansion value and the lateral movement value are blank.

Question/Resolution Requested: Please provide the required axial compression and expansion movement and lateral movement for the flexible pump connectors, including any minimum effective length or basis-of-design model.

Answer: Remove sections 2.05.2.a and 2.025.2.b and replace with the following:

2.05.2.a – Maximum intermittent offset from centerline is ¾”. Maximum permanent offset from centerline is 1”.

12. Packaged Rooftop Unit Specification Capacity Threshold Subject: Section 23 74 16 does not match the scheduled RTU capacity class Drawing/Spec Reference: Specification Section 23 74 16, Paragraph 2.02.A; Drawing M501 Rooftop Unit Schedule.

Conflict/Gap: Section 23 74 16 states that it governs units 25 tons and larger. M501 schedules RTU-R-1 at approximately 20.3 tons, RTU-R-2 at approximately 5.1 tons, and RTU-R-3 at approximately 4.4 tons.

Question/Resolution Requested: Please confirm whether Section 23 74 16 governs the scheduled units notwithstanding its 25-ton threshold. If not, provide the correct technical specification and performance requirements for RTU-R-1, RTU-R-2, and RTU-R-3.

Answer: Yes this section covers all RTUs for the project.

13. Elevator Pit Sump Pump Relocation and Connections Subject: Relocated sump pump scope is not fully defined Drawing/Spec Reference: Drawing A001, Demolition Note D12; Drawing A501, Reference Note 14; Drawings P101 and P401; Drawings E201 and E402; Specification Section 14 21 00.

Conflict/Gap: A001 requires relocation of the sump pump and filling the existing pit. A501 identifies a relocated sump-pit location and directs coordination with plumbing, but the plumbing drawings do not define the new pit dimensions, discharge routing, connection point, or pump schedule. Electrical documents reference the existing sump pump and a GFCI-protected receptacle without a complete relocation detail.

Question/Resolution Requested: Please confirm whether the existing pump is to be reused or replaced and provide the relocated pit location and dimensions, pump capacity and controls, discharge piping route and termination, check and isolation valves, alarm requirements, and electrical circuit and receptacle relocation scope.

Answer: The existing pump shall be relocated to a new cast in place pit in the elevator pit. The existing pump shall be reconnected to existing piping.

14. Fire-Protection Valve Supervision and Fire-Alarm Interface Subject: Sprinkler valve supervisory monitoring is not fully designed Drawing/Spec Reference: Specification Section 21 05 23, Paragraph 3.02.B; Drawing Sheets E201, E202, and E203; fire-protection drawings; referenced but unissued Section 28 46 00.

Conflict/Gap: Section 21 05 23 requires listed fire-protection shutoff valves to be supervised open. The issued electrical and fire-protection documents do not identify the valves requiring tamper switches, monitor modules, pathway and cabling, connection to the existing fire-alarm system, or the trade boundary. Section 28 46 00 is referenced but not issued.

Question/Resolution Requested: Please identify every valve requiring supervisory monitoring and provide the fire-alarm interface design, monitor-module requirements, conduit and cabling pathways, panel connection, programming, testing, and Division 21, 26, and 28 furnish-and-install responsibilities.

Answer: Fire protection is a differed submittal for specialized design. Valves will be identified by fire protection contractor in their design. The existing pump shall be relocated to a new cast in place pit in the elevator pit. The existing pump shall be reconnected to existing piping.

15. Base Bid Scope Definition Subject: Solicitation Base Bid description conflicts with Drawing G001 Drawing/Spec Reference: Solicitation 140P6226B0002, Section B, Base Bid CLIN; Drawing G001 Scope of Work.

Conflict/Gap: The solicitation includes elevator work, partial second-floor remodeling, third-floor plumbing rough-ins, and an HVAC extension in the Base Bid. G001 defines the Base Bid as the elevator, partial second-floor remodel, and second-floor restrooms, without identifying the third-floor plumbing rough-ins or HVAC extension.

Question/Resolution Requested: Please issue one controlling Base Bid scope description and identify all Base Bid work on the third floor and roof, including plumbing, HVAC, fire protection, electrical, controls, structural supports, and associated architectural restoration.

Answer: The third-floor plumbing rough-ins or HVAC extension are to be included in the base bid.

16. Third-Floor Electrical Demolition Option Assignment Subject: Third-floor demolition is assigned to different option numbers Drawing/Spec Reference: Solicitation Section B; Drawing A002; Drawing E002 and Demolition Note D3.

Conflict/Gap: The solicitation and A002 identify third-floor demolition as Option 5. E002 is titled Third Floor Plan, Demolition, Option 6, and its demolition note assigns work to Option 6.

Question/Resolution Requested: Please confirm whether all third-floor electrical demolition belongs to Option 5 or Option 6 and issue corrected sheet titles, notes, and pricing boundaries.

Answer: Electrical demolition work on 3rd floor is on Option 6.

17. Option 3 Dependency and Pricing Basis Subject: Option 3 modifies work carried under Option 2 without an award restriction Drawing/Spec Reference: Solicitation Section B and FAR 52.214-19(c); Drawing G001; Drawing A301 Room Schedule; Specification Section 03 35 11.

Conflict/Gap: Option 3 provides carpet in lieu of the concrete sealer assigned to Option 2 in Rooms 207, 208, 217, 218, 219, and 220. The solicitation permits acceptance of item combinations but does not state that Option 3 depends on Option 2 or whether the Option 3 price is the net change from sealer to carpet.

Question/Resolution Requested: Please confirm that Option 3 may be awarded only with Option 2 and state whether the Option 3 price is an additive net differential, a deduct-and-add alternate, or the full cost of the carpet scope.

Answer: Option 3 will only be awarded if Option 2 is awarded. Option 3 price is to be the net change from sealer to carpet.

18. Options 5 and 6 Dependency and Base Work on Option 6 Documents Subject: Option 6 assumes Option 5 demolition and includes Base Bid work Drawing/Spec Reference: Solicitation Section B and FAR 52.214-19(c); Drawings A002 and A104; Drawings E002 and E203; Drawing A301 third-floor schedules.

Conflict/Gap: The Option 6 build-out is drawn over conditions created by Option 5 demolition, but no required award sequence is stated. In addition, E002, E203, and A301 contain items explicitly labeled Base Bid on documents otherwise titled or scheduled as Option 6.

Question/Resolution Requested: Please define the required relationship between Options 5 and 6 and issue a scope-segregation matrix identifying Base Bid, Option 5, and Option 6 work by sheet, system, door, device, demolition activity, and restoration requirement.

Answer: The generation of a matrix is something the contractor can do if they need it. This is a General Contractor responsibility.

19. Governing Structural Code and Standard Editions Subject: Structural design and special-inspection standards use conflicting editions Drawing/Spec Reference: Drawing G102; Drawing S00; Attachment 4, Statement of Structural Tests and Special Inspections.

Conflict/Gap: G102 and Attachment 4 use the 2024 IBC family and AISC 360-22 and AISC 341-22. S00 identifies the 2018 IBC, ACI 318-14, TMS 402-16, AISC 360-16, and ASCE 7-16.

Question/Resolution Requested: Please identify the governing building-code and referenced-standard editions for structural design, delegated design, fabrication, welding and bolting, anchors, inspections, testing, and acceptance, and issue revised notes where required.

Answer: See revised sheet S00, Codes adjusted to reflect use of IBC 2024.

20. Drawing Issue Dates and Revision Control Subject: The issued drawing PDF contains sheets dated after the cover-sheet issue date Drawing/Spec Reference: Drawing Cover Sheet 0; title blocks for FP00, FP101, and FP102; and electrical sheets E00, E01, E001, E002, E101, E102, E103, E201, E202, E203, E401, E402, E501, E601, E701, and E702.

Conflict/Gap: The cover identifies Final Construction Documents dated August 13, 2025. The three fire-protection sheets and all 16 electrical sheets carry later dates, ranging through November 15, 2025, but the supplied set contains no revision index, bulletin, or addendum identifying the changes or establishing supersedence.

Question/Resolution Requested: Please confirm the controlling issue date and revision for every drawing sheet and provide a revision narrative or addendum identifying all changes made after August 13, 2025.

Answer: The sheets are all dated August 13, 2025 and contain no revisions. The stamps may be signed and dated different than the issuance of the sheets which does not imply that the sheets have changed. Any sheets revisions will be noted and dated in the title block and issued by the CO.

21. Below-Grade Sanitary Work, Slab Restoration, and No-Excavation Statement Subject: Division 01 states no excavation is required, but the drawings require work below the slab Drawing/Spec Reference: Specification Section 01 10 00, Paragraph 1.3.C; Drawing A001; Drawing A102, Reference Note 16; Drawing P100.

Conflict/Gap: Section 01 10 00 states that no excavation is required. A001 requires removal of the concrete slab to access sanitary lines, P100 requires a below-grade connection to the existing 6-inch sanitary main with floor cutting and patching, and A102 Reference Note 16 requires repair of the concrete slab and floor finishes without defining the limits or replacement assembly.

Question/Resolution Requested: Please clarify whether the no-excavation statement applies only to exterior earthwork. Define the required interior trench excavation, shoring or protection, spoil handling and disposal, bedding, backfill, compaction testing, slab-removal and replacement limits, slab thickness and reinforcement, doweling or bonding to existing concrete, vapor-retarder restoration, control and construction joints, concrete finish, and the extent and type of adjacent floor-finish restoration.

Answer: The no excavation statement applies only to exterior earthwork. Added new slab at existing detail 8/S102. See addendum.

22. MEP Base Bid and Option 6 Equipment and Load Matrix Subject: Mechanical, electrical, and fire-protection option assignments are incomplete Drawing/Spec Reference: Solicitation Section B; Drawing G001; Drawings M103 and M501; Drawings E701 and E702; Drawing FP102.

Conflict/Gap: The mechanical and electrical documents do not provide one consistent Base Bid versus Option 6 equipment assignment for RTU-R-1, RTU-R-2, RTU-R-3, TEF-R2, TEF-R3, and HP-R-1. The panel schedules show all options combined without exact option-specific breaker, feeder, and load changes. FP102 also shows both an unqualified third-floor plan and an Option 6 plan without a written sprinkler scope split.

Question/Resolution Requested: Please issue an MEP option matrix identifying each Base Bid and option-specific item, including equipment, curbs, duct and piping, controls, feeders, breakers, disconnects, panel modifications, fire-protection work, testing, and commissioning for every permitted option combination.

Answer: These sheets show the base option and the additional scope included in Option 6. If Option 6 is not accepted, the additional scope identified within Option 6 is not accepted.

23. TEF-R2 Scheduled Airflow Subject: Conflicting airflow values for TEF-R2 Drawing/Spec Reference: Drawing M501 Fan Schedule and Fan Schedule Note 2.

Conflict/Gap: The TEF-R2 schedule row identifies 450 CFM. Fan Schedule Note 2 states that the Base Bid fan option is to exhaust 375 CFM and that the fan model does not change with Option 2.

Question/Resolution Requested: Please confirm the required TEF-R2 airflow for the Base Bid and for Option 2, and provide the corresponding balancing setpoint, control sequence, and any required equipment or duct-sizing revision.

Answer: The same fan model will be used for either 375 or 450 CFM. The unit is required to be provided with a speed controller for balancing. No changes to the methodology for control.

24. Mechanical Drawing Index and Sheet Title Discrepancy Subject: Specification Appendix C misidentifies the issued mechanical plan sheets Drawing/Spec Reference: Specifications Appendix C, Drawing List, PDF Pages 4-5; Drawing Cover Sheet 0; Drawings M101, M102, and M103.

Conflict/Gap: Specification Appendix C lists M101 as First Floor Plan, M102 as Second Floor Plan, and M103 as Third Floor Plan. The issued drawing set identifies M101 as Second Floor Plan, M102 as Third Floor Plan, and M103 as Roof Floor Plan. The discrepancy also creates uncertainty regarding whether a first-floor mechanical airside plan is missing or whether the appendix is incorrect.

Question/Resolution Requested: Please issue a corrected incorporated drawing list and confirm the controlling titles and scope for M101, M102, and M103. Confirm whether any first-floor mechanical airside plan is required in addition to M201, First Floor Piping Plan.

Answer: The sheet index in the specifications, Appendix C, is incorrect. The correct sheets names are M101 as Second Floor Plan, M102 as Third Floor Plan, and M103 as Roof Floor Plan.

25. Temporary Interior Separation at Elevator Work Area Subject: Minimum requirements for temporary wall and access door are undefined Drawing/Spec Reference: Drawing A001, Demolition Note D17; Drawing G100, General Demolition Note F; Specification Section 01 10 00, contractor-use, protection, and occupied-building requirements.

Conflict/Gap: Demolition Note D17 requires a temporary wall and access door around the elevator work area. The documents do not define the partition location and extent, required height, construction type, fire or smoke performance, door hardware and locking, dust containment, pressure control, sound control, egress, temporary signage, or required duration. The building will remain occupied during construction.

Question/Resolution Requested: Please provide the minimum performance requirements and limits for the temporary elevator-work enclosure and access door, including required height, materials, fire and smoke performance, security, dust and air-pressure control, egress, signage, maintenance, and removal.

Answer: Provide a temporary enclosure as follows:

TEMPORARY CONSTRUCTION PARTITION

General Furnish and install a non-rated temporary construction partition to enclose the work area for the duration of construction. Partition shall be full-height (floor to underside of structure/ceiling) unless otherwise directed, and shall be constructed to provide a stable, dust-tight barrier separating the construction area from occupied/adjacent spaces. No fire-resistance or smoke-control rating is required for this partition.

Location Provide temporary construction partition as indicated on the construction drawings. Coordinate final location with COR prior to installation.

Framing Frame partition with minimum 3-5/8" metal studs at 16" o.c., with continuous top and bottom plates/tracks. Brace and anchor partition to floor and structure above to resist lateral loads and maintain plumb, level, and rigid construction.

Sheathing Cover the construction side, and where exposed to occupied areas the finished side, with minimum 1/2" plywood, mechanically fastened to framing. Provide smooth, flush joints. Where the partition faces public or occupied areas, plywood shall be finished (sanded and painted) to a neat, uniform appearance as directed.

Door Provide one (1) 3'-0" wide by 7'-0" tall door with frame, hardware, and 1-1/2 pair butt hinges. Door shall be equipped with a mechanical (keyed) lockset. Provide two (2) keys to the COR upon installation. Door shall be self-closing where directed and shall seal against dust migration.

Dust Control Seal all joints, penetrations, perimeter edges, and the gap between partition and adjacent floor, walls, and structure above with tape, gaskets, or sealant to prevent dust migration. Keep door closed except during passage. Provide walk-off mats at the door as needed.

Signage Provide signage on the occupied side of the partition, including construction/authorized-personnel-only notices and any other signage required by the Contracting Officer or applicable safety regulations. Signage shall be securely mounted, legible, and maintained for the duration of construction.

Removal and Restoration Upon completion, remove the temporary partition, door, framing, fasteners, sealant, and all associated materials in their entirety. Repair, patch, and restore all affected floor, wall, ceiling, and structural surfaces to match the condition existing prior to construction of the temporary wall. Remove all debris and leave the space clean.

26. Concrete Threshold Infill and Floating Limits Subject: Undefined concrete transition dimensions and bid basis Drawing/Spec Reference: Architectural Reference Note 1; Drawing A302, Masonry Infill Detail 3.

Conflict/Gap: The drawings require concrete infill to be leveled with adjacent floor elevations and permit the concrete to be floated as needed at a slope not exceeding 2 percent. Existing elevations, maximum transition distance, maximum fill thickness, substrate preparation, bonding method, reinforcement, joint treatment, and finish requirements are not defined.

Question/Resolution Requested: Please provide the controlling adjacent-floor elevations and required limits of concrete floating. Define the maximum transition length and thickness, concrete or repair-material requirements, substrate preparation, bonding agent, reinforcement or doweling, joint treatment, curing, and final finish.

Answer: See concrete specification on S00.

27. Finished-Ceiling and Structure Heights Subject: Complete ceiling-height and floor-to-structure information is not provided Drawing/Spec Reference: Drawings A301, A601, and A602; architectural floor plans; fire-protection, plumbing, mechanical, and electrical plans.

Conflict/Gap: The reflected-ceiling drawings direct bidders to the room-finish schedule for ceiling heights, but the A301 room schedules identify ceiling material and finish without a ceiling-height column. Individual dimensions are shown at selected locations, but complete finished-ceiling, floor-to-deck, underside-of-beam, and roof-deck elevations are not provided for all work areas. These dimensions affect partitions, painting, firestopping, ductwork, piping, conduit, equipment supports, access, and scaffolding.

Question/Resolution Requested: Please provide a coordinated room-by-room schedule of finished-ceiling heights and floor-to-underside-of-deck or structure heights for all Base Bid and option areas. Identify open-structure areas, underside-of-beam elevations, sloped roof-deck conditions, and the controlling elevation at each full-height partition and MEP coordination zone.

Answer: Ceiling elevations are identified on the Reflected Ceiling Plans. Floor to floor heights are identified in elevator sections on A501. Contractor to verify all existing dimensions.

28. Please provide a message schedule for the ADA Signage.

Answer: See drawings and specifications.

29. No Liquidated Damages listed in the Bid Documents. Are there any Liquidated Damages associated with this Project?

Answer: No liquidated damages.

30. Spec Section 23 09 13: Instrumentation and Control Devices for HVAC Paragraph 1.04A mentions the system design to be under the direct supervision of a Professional Engineer. Please confirm that this is to be included in the General Contractor’s Contract?

Answer: Remove section 1.04

31. Spec Section 01 10 00 P3.1B: Specifically requests a full time on-site Superintendent for the Project. Are there any other designated field staff for the GC to provide for safety and quality control. Could not locate any Project requirements for such in the Specifications. Please advise.

Answer: Contractor to follow the requirements of drawings, specifications, and FAR contract. It is the contractor’s responsibility to maintain a safe working environment and ensure quality control.

32. Please clarify whether the elevator contractor is design-build or fully specified. Confirm who is responsible for:

Hoistway beam design Rail support steel Electrical requirements Pit waterproofing Elevator inspection fees State permits

Answer: Hoistway beam is designed as identified in the construction documents and specifications. Contractor to provide rail support steel as specified. Electrical requirements as specified. Elevator pit is existing and no additional waterproofing is required. Inspections and permits are to be provided by the contractor as specified.

33. Has a hazardous materials survey been completed for:

Asbestos Lead paint PCB-containing materials Mold

Answer: No hazardous materials survey has been completed. The building was remediated of hazardous materials prior to NPS taking possession in 2015. There was a major fire in this building in 1998 that destroyed almost everything.

34. Specifications state existing conditions are based on limited field verification. Please provide any available as-built drawings, laser scans, or structural investigation reports for bidding purposes.

Answer: NPS can provide drawings from the 2021 construction but makes no guarantee as to the accuracy of the drawings.

35. Specifications require salvaging and reusing existing brick. Please provide an estimated quantity available for reuse and identify acceptable sources if salvaged quantities are insufficient.

Answer: Brick is to be salvaged from demolition activities.

36. Please provide the allowable floor loading for:

Construction staging Material storage Mechanical equipment Third-floor storage areas

Answer: From the 2021 constructions drawings, design live loads for the floors are 100 psf.

37. Please confirm bid responsibility for:

Welding inspections NDT testing Bolting inspections Special inspection agency

Answer: See reissued attachment 4, Statement of Structural Tests Special Inspections. Special inspections shall be contractor-arranged, owner-directed. Prime contractor to be responsible for scheduling, coordinating access, and paying for special inspections. Special inspection agency to be pre-approved by owner, report directly to the owner, and take no direction from the contractor. Any findings of nonconformance shall be corrected and reinspected until conformance is achieved at no cost to the owner. Final acceptance lies solely with NPS as required by the contract.

38. Please provide utility investigation information showing:

Water service capacity Sanitary sewer capacity Gas service capacity Electrical service capacity

Answer: The existing utilities were accounted for in the design work.

39. Specifications require trailerized public restrooms. Please confirm:

Anticipated duration Location Utility connection requirements Expected usage volumes by visitors

Answer: Duration is based on the construction schedule developed by the contractor. NPS expectation is that the need for temporary restrooms is as limited as possible. Location is identified on sheet G101. Provide utilities as specified.

40. Please clarify which existing HVAC equipment is to remain, be modified, or be removed.

Answer: Please see M00 and compare to sheets in the set to understand the scope of the mechanical work.

41. The specifications reference testing and balancing but commissioning requirements are unclear. Please confirm:

Independent commissioning agent Functional testing scope Contractor responsibilities

Answer: There is no commissioning for this project. Provide a startup report and testing and balancing report to the COR.

42. Please confirm available spare breaker and panel capacity for:

Elevator New HVAC units Future tenant spaces Answer: The elevator, new HVAC units, and the tenant space are all indicated in the panelboard schedules.

43. What is the anticipated notice-to-proceed (NTP) date for the project?

Answer: The Government has not established a specific Notice to Proceed date at this stage of the solicitation. The NTP will be issued after award, completion of all required post‑award reviews, receipt of acceptable bonds and insurance, and coordination with the park.

44. Please specify the award strategy for the project between the base and options.

Answer: Please see Section M for the evaluation of options and award strategy.

45. Please provide the Historic Preservation Treatment Plan referenced in Division 01 and identify any additional review requirements by NPS, SHPO, or IDNR.

Answer: The Historic Preservation Treatment Plan is to be developed by the Contractor and provided to NPS at the preconstruction conference. This requires a succinct written plan wherein the contractor acknowledges historic elements identified in the construction documents and specifications and identifies how they will be protected during the course of construction.

46. Please provide finish selections for:

Carpet Paint Wall coverings Casework laminates Window shades Answer: See the drawings and specifications.

47. Paragraph 3.1B definitely states that a full time Superintendent is to be on site during construction. If qualified, can the Superintendent also perform the duties of the Safety and Health individual and also be the Quality Control representative? Please advise.

Answer: Yes, this is acceptable.

48. Do the Superintendent, SSHO and QC Manager need to be 3 separate individuals?

Answer: No, this is not a requirement.

49. Can the period of performance be extended after award once the material/equipment lead times are confirmed due to current market conditions for the equipment for this project?

Answer: The solicitation does not provide for an automatic extension of the period of performance based solely on material or equipment lead times or current market conditions. The contractor is required to account for the acquisition of materials, plant, and equipment in its project schedule and to take necessary measures to maintain the approved schedule. Any request for an extension would be subject to the terms of the contract and applicable FAR provisions and would require approval by the Contracting Officer.

50. Please provide the site visit attendee sign in sheet.

Answer: Provided with first amendment on sam.gov.

51. Please confirm whether asbestos or lead is present on this project, and if so, provide the relevant documentation.

Answer: The building was remediated of hazardous materials prior to NPS taking possession in 2015. There was a major fire in this building in 1998 that destroyed almost everything.

52. Is this project tax exempt?

Answer: Follow Illinois sales tax requirements for federal construction.

53. When do you anticipate on site work starting?

Answer: On-site work is anticipated to begin within 10 calendar days after issuance/receipt of the Notice to Proceed, in accordance with the solicitation. The specific NTP and on-site start date will be established following contract award.

54. Are third party inspections required?

Answer: As required in the specifications.

55. Is permitting required?

Answer: As required in the specifications.

56. Please provide as builts.

Answer: NPS can provide drawings from the 2021 construction but makes no guarantee as to the accuracy of the drawings.

57. Is the contractor required to move any furniture/equipment out of the existing building? If so, is there a place to store items durring construction or is the contractor responsible to provide a connex?

Answer: The 2nd floor will not be occupied by NPS. NPS storage on 3rd floor will remain in place during construction.

58. Does the government have a preferred Direct Digital Control for HVAC company? If so please provide the contact information.

Answer: Follow the requirements of the drawings and specifications.

59. The roof/boiler room (M103, M203) shows existing boilers B‑M‑1(E)/B‑M‑2(E) and an existing AHU‑M‑2(E) being kept, with new pumps reconnecting to the existing expansion tank and chemical pot feeder. Given the project adds 3rd-floor load (Option 6) and expands HVAC to all 3 levels, is there an engineering capacity study confirming the existing boiler plant has spare capacity, and what age/condition data is available.

Answer: These systems were reviewed as part of design but no report will be provided.

60. Sheet M103 note states: "Contractor to coordinate replacement of gas meter for unit sized for increased gas load with gas utility provider... to replace gas meter regulator to allow for 2 psi gas pressure." Are utility company charges/timeline are included in our price or handled separately? If so please provide utility providers contact information.

Answer: This note is located on sheet M201. Contractor is responsible for coordinating replacement of the gas meter with the utility provider (Peoples Gas).

61. Division 07 has no roofing specification section at all (only firestopping and joint sealants), yet the spec repeatedly warns to "maintain roof warranty" when installing curbs/penetrations. Who the roofer of record is and whether HVAC penetrations must be performed or witnessed by a warranty-approved installer to avoid voiding it.

Answer: Roofing General Notes have been provided in the General Notes section providing guidance on new roof penetrations and flashings.

· All new penetrations, flashings, and membrane repairs shall be completed watertight, and that the contractor is responsible for maintaining the watertight integrity of the existing roof system during and after the work.

· All new materials (flashings, sealants, membrane, adhesives, pipe boots, etc.) shall be compatible with and matched to the existing membrane type.

· Provide electronic leak detection via ASTM D7877 or D8231 before the work is started to identify if there are any leaks in the roofing and after roof work is completed to verify that there are no leaks present.

· Contractor to provide a two year workmanship warranty on the new penetrations and repairs.

62. The site logistics plan (G101) only marks an "optional crane location" — not a confirmed one — and notes the historic slab and sidewalks are explicitly not rated for vehicle or point loads, with a "CIRP review by IDNR" required before construction starts. What rigging path/crane pad is actually approved for hoisting rooftop units, and how long will that review take?

Answer: The “optional crane locations” identified on the drawings are approved locations that the contractor has the option of using. Rigging paths and crane pads must be coordinated by the contractor.

63. Will the 1st floor (and any occupied 2nd-floor areas) stay in operation during construction? What are the requirements for temporary conditioning, dust/noise control, and utility shutdown notice when tying into live systems.

Answer: See Division 01 of the specifications for requirements. The 2nd floor will not be occupied by NPS. NPS storage on 3rd floor will remain in place during construction.

64. Tags like ERF‑M‑2(E), UH‑M‑2(E), and VAV‑1‑5(E) appear on both floor plans and piping demo plans with conflicting signals — the legend says existing-to-remain equipment is "not in scope," but demo notes call for removing pumps/piping tied to that same equipment. Is there a clean list of which existing mechanical equipment is remain-as-is, remove-and-reinstall, or remove-and-replace.

Answer: All pieces of equipment referenced in this question are shown as existing to remain.

65. Is there an as-built survey or dimensional verification of the existing shaft/pit (plumbness, clear dimensions, pit depth, top-of-shaft elevation)?

Answer: No. The elevator shaft was constructed in 2021 as part of the first floor buildout.

66. Please give the number of years required in the maintenance contract called out in Spec 14-21-00, note K on page 3. "Submit proposal to Owner for standard _____ -year continuing maintenance contract agreement..."

Answer: Strike this requirement, section 14 21 00 item 1.05.K, from the specifications.

67. Are partitioning, dust containment, and/or negative air machines required for this project?

Answer: Partitioning and dust containment is required. See drawings and specifications.

68. Drawing M101 Keynote 2 calls for the exposed supply ductwork to be lined with closed cell elastomeric liner. Spec Section 230713-2.03.E provides a definition for fiberglass duct liner. Can flexible fiberglass duct liner be used in lieu of closed cell elastomeric liner?

Answer: No, provide closed cell elastomeric liner as indicated.

69. Drawing M101 Keynote 3 requires exposed spiral to be lined with closed cell elastomeric liner. When installing liner in round ductwork, it is not possible to glue or pin the liner to the metal. This may result in the liner collapsing inside the duct after installation. Johns Manville Spiracoustic is a fiberglass duct liner with an anti-microbial coating that is designed to be installed in round ductwork. 1.5” (R-6.4) Spiracoustic can be installed to provide a free air diameter as small as 11”. 1” (R-4.3) Spiracoustic can be installed to provide a free air diameter as small as 4”. In order to prevent the possible collapse of the rubber duct liner, can fiberglass duct liner be used?

Answer: Yes Johns Manville Spiracoustic liner is acceptable.

70. Countertop specification 12-36-00 is referenced in architectural casework spec 06-41-00, but there are no 12-36-00 in the specifications. Please provide 12-36-00 Specs.

Answer: REVISE Specification Section 06 41 00 Architectural Woodwork, Paragraph 2.04_D:

Countertops: Wilsonart Bluestone 9074EA or approved equal Composition: Acrylic resins, fire-retardant mineral fillers, and proprietary coloring agents. Through-the-body color for full thickness of sheet material.

Tensile Strength: [6800 psi]; ASTM D 638 Flexural Strength: [10,000 psi]; ASTM D 790 Thermal Expansion Coefficient: 1.37 x 105 in./in.oF; ASTM D 696.

Impact Resistance: [144 in.] drop with no fracture; NEMA LD-3, Method 3.8 Stain Resistance: Pass; ANSI Z 124.3, modified. 12. Wear and Cleanability: Pass; ANSI Z 124.3.

Moisture Absorption: Less than 0.25 percent; ASTM D 570, long term

Accessory materials Joint Adhesive: Methacrylate-based adhesive for chemically bonding solid surfacing seams. Color complementary to solid surfacing sheet material. UL 2818 GREENGUARD Gold certified and complies with SCAQMD Rule 1168.

Siliconized Acrylic Sealant: Siliconized acrylic latex sealant. For general applications to fill gaps between countertops and at terminating substrates. Complies with ASTM C 834, Type OP, Grade NF, and SCAQMD Rule 1168. 1.

71. Specification Section 23 09 23, Direct-Digital Control System for HVAC, calls for an onsite server. Drawing M501 also notes that there is an existing BACnet BAS. Can you please provide the manufacturer or service provider of the existing BAS, along with any additional information that is available?

Answer: The existing system is Distech Controls installed by Automatic Building Controls, Inc.

72. I was reaching out about ABC hopefully being sole sourced as the controls/BAS contractor.

We were hoping the specification could be revised to say something along the following lines:

23-09-23 – pg. 2 Part 2 Products

2.01 Manufacturers

A. Distech Controls installed by Automatic Building Controls, Inc.

B. No substitutions.

Answer: At this time, the solicitation requirements remain unchanged. Any changes to the solicitation requirements, if determined necessary by the Government, will be issued by formal amendment to the solicitation. Please continue to base your bid on the specifications and requirements currently included in the solicitation r