C116635 - RFI Responses.pdf

No. Issue Contractor Question Related RFIs Response

RFI-001 Solicitation states 300 days after NTP and PoP 05/25/2026–03/21/2027, while SOW states 300 workdays.

Please confirm whether the period of performance is 300 calendar days or 300 workdays from Notice to Proceed, and whether the listed PoP dates are fixed or placeholders.

RFI-053, RFI-079, RFI-084, RFI-

SOW section 2.2 says 300 workdays but the contractor can finish early. The SOW does not have any PoP dates noted. The PoP from NTP to Project Closeout is 300 Workdays.

RFI-002 The continuation sheet lists Delivery Location Code BLDG 13, 2C, while project work is Building 31B below-grade structure.

Please confirm the correct project delivery/work location and whether any submittals, deliveries, or Government-furnished materials are to be routed through Building 13.

GFCI items asks the contractor to coordinate with the PO, but does not ask for routing thru Bldg 13.

RFI-003 Schedule requirements reference cost-loaded schedule and SOV, but format/level of detail is not fully defined.

Please confirm required scheduling platform, cost-loading level, required updates, and whether the schedule of values must align one-to-one with specification sections.

RFI-014 Primavera-P6 or Microsoft Project may be used. Indicate CSI divisions for each line item.

RFI-004 Noisy work hours differ between SOW and Division 01 requirements.

Please confirm the controlling normal work hours, noisy work hours, and advance approval requirements for weekend/evening/noisy work.

RFI-015, RFI-073, RFI-116, RFI-

Per Specification Division 01 Noise Hours shall be between 7:00pm and 7:30am.

RFI-005 NIH may restrict work on an unscheduled basis due to NIH operations.

Please confirm whether Government-directed unscheduled restrictions, delays, or resequencing will be treated as excusable and compensable where they affect the critical path or increase costs.

Any delays or unscheduled restrictions that are at no-fault to the contractor will be treated as excusable and compensable. Specification section 011400-1.6 may not apply to this project because the project site is not adjacent to a hospital, laboratory or animal holding areas.

RFI-006 The documents require PM, QC, safety, inspections, and labor compliance support but do not state whether roles may be combined.

Please confirm the minimum required on-site/key personnel, required qualifications, and whether one qualified person may hold multiple roles such as PM/QC Manager/Superintendent/SSHO when duties do not conflict.

RFI-007, RFI-008, RFI-051, RFI-

061, RFI-078

Refer to Specification Section 014500-1.6 for QC Manager roles and responsibilities, and Section 015950 for SSHO roles and responsibilities. One person cannot hold multiple roles; these positions must be filled by separate individuals.

RFI-007 SSHO qualifications are subject to NIH review/interview and rejection, but minimum level is not clearly stated in the bid documents provided.

Please confirm the required SSHO training/certifications, minimum experience, full-time presence requirement, and whether alternate SSHO coverage is required.

RFI-006, RFI-008, RFI-051, RFI-

061, RFI-078

Refer to Specification section 015950 for SSHO roles and responsibilities.

RFI-008 Quality Control obligations appear significant, including DFOWs and inspections, but dedicated QC staffing is not clearly defined.

Please confirm whether a dedicated full-time QC Manager is required or whether QC duties may be performed by the PM/Superintendent with qualified trade specialists and manufacturer representatives.

RFI-006, RFI-007, RFI-051, RFI-

061, RFI-078

Refer to Specification section 014500-1.6 for QC Manager roles and responsibilities.

RFI-009 Excavations up to approximately 18 feet deep and slab load limits require specialized means/methods and engineering review.

Please confirm whether a Maryland-licensed professional engineer must stamp temporary excavation support, shoring, and slab-loading means and methods before work proceeds.

RFI-022, RFI-101, RFI-102, RFI-

125, RFI-126, RFI-127

Yes, we believe a Maryland licensed PE must stamp the following.

RFI-010 Record drawings for underground utilities/piping must be certified by a Maryland licensed surveyor.

Please confirm surveyor deliverables, required format, and whether survey certification is required only for new/encountered underground utilities or for all site/as-built conditions.

The deliverables will be in DWG format.

C116635 RFI Response Tracker Items are ordered by the original Word document sequence. Related RFIs link to the matching Topic Index row.

RFI-011 Multiple plans/procedures are required across the SOW and specifications, but a single consolidated list is not provided.

Please provide or confirm the full list of required plans, procedures, registers, and submittals due before mobilization and during construction, including deadlines and approving parties.

Required plans, procedures, registers, and submittals due before mobilization and during construction, including deadlines and approving parties are as noted in the BID Documents.

RFI-012 SOW states construction may not begin until Accident Prevention Plan is approved;

safety spec also references site-specific safety requirements.

Please confirm whether the Accident Prevention Plan and Site Specific Safety and Health Plan are separate documents or may be combined into a single Safety Plan package.

Accident Prevention Plan as part of the Site Specific Safety Plan can be submitted as a single document or separate documents.

RFI-013 Quality Control Plan requirements are broad and may require Definable Features of Work (DFOWs), inspections, checklists, testing, and documentation.

Please confirm required QC Plan content, approval deadline, required DFOW list, and whether three-phase control procedures are required.

Refer to the Quality Control Plan requirements in the Construction Documents.

RFI-014 Cost-loaded schedule is required within ten workdays from award, but baseline review/approval duration is unclear.

Please confirm required baseline schedule submittal date, Government review period, update frequency, and whether procurement durations may exceed 20 calendar days.

RFI-003 Refer to Construction Documents for Schedule of Values related information. No further information is available at this time. See Division 01 schedule/payment submittal requirements.

RFI-015 After-hours work requires permits/approval and coordination with NIH Police/COR/PO.

Please confirm the form, review duration, approval authority, and notice period for afterhours work and Police Permits.

RFI-004, RFI-073, RFI-116, RFI-

Refer to Construction Documents for After Hour Work related information. No further information is available at this time. See Specification Section 01 1400 Work Restrictions.

RFI-016 The bid package includes solicitation, SOW, IFC drawings, and IFC specification. The drawing/spec/SOW dates differ.

Please confirm the contract document hierarchy and latest controlling version of drawings, specifications, and SOW for pricing and construction.

Statement of Work (latest version) with RFI responses, specifications, and drawings coincide together. They will be incorporated into a single contract document upon award. The different dates noted on the construction documents and SOW does not represent a hierarchy.

RFI-017 Specification indicates comprehensive BIM services, while SOW appears to allow CADD unless BIM is selected/required.

Please confirm whether BIM coordination and Record BIM are required, or whether 2D CAD/PDF redlines and record drawings are acceptable for this project.

RFI-113 Division 01 includes BIM/Record BIM requirements. LSY has no additional architectural BIM requirement beyond the Contract Documents, 2D CAD/PDF redlines and record drawings are acceptable for this project, LSY will provide as-built drawing and BIM model based on the redlines drawings.

RFI-018 Spec references GFCI items such as biological safety cabinets and ice machines, which appear unrelated to exterior waterproofing/drainage work.

Please confirm whether any Government-furnished/Contractor-installed equipment applies to this project and identify each item, storage location, pickup requirements, and installation scope.

The referenced GFCI/OFCI requirements apply only where such items are shown. No biological safety cabinets or ice machines are shown; A-110 shows fitness equipment as GFGI to be relocated and restored.

RFI-019 Specification states a separate contract will be awarded for telecommunications/data systems.

Please confirm whether any telecom/data scope, pathways, coordination, protection, or shutdown support is required under this contract.

CIT related work will be done by CIT contractor.

RFI-020 Life safety plan indicates temporary signage / do-not-enter construction zone requirements; extent of signage is not fully defined.

Please confirm required temporary life-safety signage locations, sign wording, materials, duration, approval party, and whether permanent signage is included.

RFI-042, RFI-065, RFI-066, RFI-

094, RFI-130, RFI-131

Provide temporary construction-zone signage and maintain the approved alternate egress route during stair work. Reconstruct the stair/egress path at completion. Per C- 201, the space below the work area is not to be occupied and is to be cordoned off. NIH to confirm areas and timing. LSY recomment metal, coordinate with NIH on materials.

RFI-021 Drawing requires coordination to maintain one lane of loading dock access;

specifications restrict deliveries and loading dock use.

Please confirm minimum loading dock access requirements, allowed closures, traffic control expectations, truck size limits, delivery windows, and whether one lane must remain open at all times.

RFI-063, RFI-129 A-100 requires coordination with NIH to maintain one lane of loading dock access. Refer to the construction documents for loading dock access requirements and constraints.

RFI-022 Drawings show excavation areas approximately 18 feet deep and 6 feet deep;

loading/slab limits noted at 600 psf.

Please confirm the extent/depth of excavation, allowable loading on slabs, and required engineering review process for soil removal, equipment staging, and temporary support.

RFI-009, RFI-101, RFI-102, RFI-

125, RFI-126, RFI-127

Refer to constrcution drawings for reference.

RFI-023 Staging, laydown, dumpsters, fencing, trailers/storage containers, and road closures require coordination, but allowed areas are not fully clear.

Please identify approved staging, laydown, dumpster, fencing, storage container, trailer, and construction entrance locations, including any SIRC/permit requirements.

RFI-095 The GC shall propose Staging areas as part of the submittal requirement for NIH Site Selection approval.

RFI-024 Contractor use of existing elevator/loading areas is restricted and shared with NIH activities.

Please confirm whether contractor must use any existing elevator for materials, which elevator is designated, protection requirements, hours, and size/weight limits.

RFI-025 For use of elevator coordinate with the PO to schedule equipment or material transport.

RFI-025 Parking restrictions are referenced but not provided in detail.

Please confirm contractor parking locations, quantity limits, fees, vehicle badging/marking requirements, and shuttle/access restrictions.

RFI-024 Refer to the SOW weblink for parking information.

RFI-026 Utilities are approximate;

private utility locator and Miss Utility are required; no excavation near utilities until locations are determined.

Please provide available existing utility/as-built drawings, prior survey/GPR data, and known conflicts within limits of disturbance.

RFI-097, RFI-109 No further existing utility information is available.

RFI-027 Potential uncharted or incorrectly charted utilities may be encountered during demolition/excavation.

Please confirm risk allocation and change order process for relocation, repair, or redesign due to uncharted or incorrectly charted utilities.

Refer to Construction Document requirements for field verification of existing utilities.

RFI-028 SOW indicates utility shutdowns require no less than four weeks notice;

Division 01 references 18 days.

Please confirm the controlling notice period and approval workflow for utility outages, tie-ins, and connections.

RFI-104 Currently DFOM is asking for a 4 week notice for utility shutdown that must be followed.

RFI-029 Sump pumps require piping, power, controls, and BAS coordination; exact controls/interface responsibility needs clarification.

Please confirm BAS/control interface requirements for new sump pumps, alarm points, testing/startup responsibility, and whether NIH or Contractor provides BAS programming.

RFI-117 BAS interlock/programming shall be by the ATC contractor. Refer to the sequence of operation and associated alarms on P-001.

RFI-030 SOW includes potable water flushing/testing, but scope appears focused on storm drainage and sump systems.

Please confirm whether any potable water systems are included in this contract and whether flushing/bacteriological testing applies.

There is no need for potable water flushing/testing, as there are no potable water systems on this project.

RFI-031 Specifications include multiple waterproofing/air barrier systems; drawings may require different systems by area.

Please confirm which waterproofing/air barrier system applies to each roof deck, foundation wall, curb, transition, penetration, and tie-in area.

Use the waterproofing systems indicated on the drawings A-501 to A-504 and specifications by location: HRA at the B4/plaza deck, self-adhered below-grade waterproofing at foundation walls, cold fluid-applied waterproofing at indicated curb/transition areas, and specified air/water barrier, flashing, and sealants.

RFI-032 Tie-in conditions between existing loading dock waterproofing, new curb, plaza waterproofing, and foundation wall waterproofing are complex.

Please provide/confirm details for all waterproofing transitions, terminations, and tie-ins to existing systems, including acceptance criteria for existing substrate conditions.

RFI-137 Please review drawing sheets A-501 through A-504 for the required installation details

RFI-033 Waterproofing inspection/testing and manufacturer observation requirements are significant.

Please confirm required manufacturer field observations, required inspection hold points, testing method, required reports, and whether backfill/overburden may proceed only after written approval.

RFI-034, RFI-099, RFI-155 Please refer to the project specifications regarding the requirements for manufacturer field observations.

RFI-034 Integrity testing may include electronic leak detection or flood testing.

Please confirm acceptable waterproofing integrity test method by area and whether flood testing is permitted above occupied Fitness Center spaces.

RFI-033, RFI-099, RFI-155 Refer to RFI-033.

RFI-035 High-performance coating colors are indicated to match existing; exact color standards are not provided.

Please provide color standards/samples and confirm which masonry or exposed surfaces require high-performance coatings.

Coating colors are to match existing. Submit samples/mockups for Architect review.

RFI-036 Demolition includes stair, slab, handrail, knee wall, drains, retaining wall portions, lower brick courses, and wall cladding.

Please confirm exact demolition limits, salvage requirements, structural support requirements, and whether removals beyond indicated areas are excluded.

RFI-072 Demolition limits are per A-100 and details. Salvage/reinstall brick where shown; dispose off-site unless indicated for salvage/reuse. Stop work and contact the Project Officer if suspected hazardous materials are encountered.

RFI-037 Existing structural members may not be cut or altered without Project Officer authorization.

Please confirm whether any structural slab/wall penetrations, sawcuts, curb anchorage, drain penetrations, or retaining wall removals require structural engineer review/approval before execution.

RFI-076, RFI-128 Structural penetrations, sawcuts, anchorage, drains, shoring, and loading require review where they affect existing structure. Scan concrete, avoid rebar, and submit stamped delegated engineering where required.

RFI-038 Existing materials may be NIH property or require special disposal; hazardous materials not fully defined.

Please confirm salvage/return requirements for removed items and provide hazardous materials survey information for roofing/waterproofing, sealants, coatings, soils, and interior finishes.

The drawings identify limited salvage/reuse, including brick cladding salvage/reinstallation where shown and reuse/replacement to match existing where damaged. azardous materials are not expected to be present. However, if any hazardous materials are discovered, please follow the protocol established in the contract documents. Refer to Construction Documents for existing condition verifications including testing.

RFI-039 Erosion and sediment controls are indicated and strictly enforced; MDE approval information appears on drawings.

Please confirm all required erosion/sediment control permits, inspection frequency, responsible inspector, and whether any modifications require MDE/NIH approval before field changes.

RFI-068, RFI-069, RFI-086, RFI-

This will be per MDE specifications

RFI-040 Excess soil must be hauled off; disposal location and soil classification/testing are not clear.

Please confirm whether soil testing/classification is required before off-site disposal and whether soils are assumed clean/non-contaminated.

RFI-064, RFI-134, RFI-148, RFI-

149, RFI-150

See Earthwork Specification 31 2000 Section 1.7.

RFI-041 Landscape restoration includes lawns/grasses, exterior plants, tree replacement, establishment, and maintenance language.

Please confirm tree replacement quantities/species/sizes, planting window constraints, maintenance period, watering responsibility, and warranty duration.

RFI-106, RFI-107, RFI-108 See sheet C-800 for the requested information.

RFI-042 Building areas above/below/adjacent to construction remain occupied and egress must be maintained; G-002 shows temporary door closure/signage.

Please confirm required egress phasing, temporary barrier/signage plans, AHJ review requirements, and whether any Fitness Center or adjacent spaces may be temporarily closed.

RFI-020, RFI-065, RFI-066, RFI-

094, RFI-130, RFI-131

Refer to G-002 for egress plan and provide necessary signage, refer to RFI-020

RFI-043 Fire alarm/detection/suppression systems must remain operational; impairments require approval and equivalent temporary measures.

Please confirm whether any fire protection/fire alarm impairments are anticipated and whether fire watch is required for hot work, sprinkler exposure, or impairments.

No fire protection or fire alarm work is anticipated.

RFI-044 VOC/volatile chemical restrictions and nearby air intakes are referenced but not mapped.

Please identify air intake locations near the work area and confirm acceptable VOC limits, odor controls, ventilation/monitoring, and restricted application windows for waterproofing/sealant/coating products.

RFI-075, RFI-153 We believe there are no air intake locations near the work area. Refer to the Construction documents for VOC information and requirements.

RFI-045 Closeout includes redlines, O&M manuals, warranties, training videos, attic stock, and asset documentation;

exact deliverable formats/quantities are unclear.

Please confirm closeout deliverable formats, file naming, quantities, video training assets, attic stock requirements, warranty forms, and asset tag/IWMS documentation requirements.

Refer to Construction Documents for Closeout information and requirements. See Specification Sections 01 7700 Closeout Procedures, 01 7810 Project Record Documents, and 01 7823 Operation and Maintenance Documentation.

RFI-046 Waterproofing warranty duration and source of warranty obligations are not fully clear.

Please confirm required warranty duration(s), whether manufacturer no-dollar-limit warranty is required, contractor warranty period, and whether warranty starts at substantial completion or NIH partial occupancy.

RFI-098, RFI-136 Refer to specification for warranty information.

RFI-047 Section M.2 identifies pass/fail technical evaluation items, but submission format and required level of detail for Sections A, B, and C are not fully defined.

Please confirm the required proposal format for the Technical Acceptability response, including whether Relevant Experience, Key Personnel, and Technical Approach must be submitted as separate sections/attachments and whether page limits, font size, forms, or file naming conventions apply.

RFI-052, RFI-055, RFI-060, RFI-

Technical approach, relevant experience, technical approach, and price should each have its own section in the proposal document. There is no limits regarding font size, page limits, etc.

RFI-048 M.2 requires successful completion of similar construction work, but the number of projects and definition of similar work are not specified.

Please confirm the minimum number of past performance/relevant experience projects required and the criteria NIH will use to determine whether a project is similar, including size, dollar value, sitework, waterproofing, occupied facility, exterior restoration, utility/drainage, and federal/NIH campus relevance.

RFI-049, RFI-050 Minimum of 3 examples regarding past performance/relevant experience. Should be related to roofing replacement.

RFI-049 The prior past performance form includes active and completed projects, but M.2 references successful completion.

Please confirm whether active projects may be submitted as relevant experience if the contractor has successfully completed comparable portions of the work, or whether only fully completed projects will be accepted for Section M.2(a).

RFI-048, RFI-050 Active projects may be submitted as relevant experience.

RFI-050 M.2 specifically requires a qualified superintendent with relevant experience, but minimum qualifications, resume contents, and required submittal format are not defined.

Please confirm the minimum required superintendent qualifications, years of experience, resume requirements, required certifications, OSHA/safety training expectations, and whether the superintendent must be named and committed at proposal submission.

RFI-048, RFI-049 Refer to the SOW and construction documents for personnel qualifications requirement.

RFI-051 The proposal must identify key personnel, but the bid documents do not clearly state whether alternate personnel or substitutions must be submitted/approved.

Please confirm whether an alternate superintendent or alternate key personnel are required with the proposal, and confirm the approval process for post-award substitution of the named superintendent or other key personnel.

RFI-006, RFI-007, RFI-008, RFI-

061, RFI-078

Refer to SOW and Construction documents for information on change of personnel.

RFI-052 M.2 requires a technical approach that demonstrates understanding of requirements and provides a feasible approach, but the required level of detail and required subsections are not defined.

Please confirm the required contents and level of detail for the Technical Approach section, including whether the proposal must address phasing, safety, QC, security, utilities, waterproofing sequencing, schedule, subcontractor management, and closeout documentation.

RFI-047, RFI-055, RFI-060, RFI-

See section L in the revised solicitation document.

RFI-053 Proposal schedules and implementation tables may need to use relative dates because actual award/NTP dates are not yet confirmed.

Please confirm whether offerors may use T0 as the assumed contract award date, with subsequent proposal dates shown as T0 plus the applicable number of calendar/work days, until actual award and NTP dates are issued.

RFI-001, RFI-079, RFI-084, RFI-

You can use T0 (time zero) / project kick-off date.

RFI-054 Several bid risks require assumptions, allowances, unit prices, or exclusions, but it is unclear how NIH will evaluate assumptions/exclusions for price realism and technical acceptability

Please confirm whether proposal assumptions, exclusions, allowances, and unit prices will be permitted and evaluated, including items such as unknown utilities, rock excavation, unsuitable soils, hazardous materials, substrate repairs, additional waterproofing tie-ins, extended dewatering, after-hours work, and NIH-directed operational restrictions.

Proposal assumptions, exclusions, allowances, and unit prices should be used only where permitted by the solicitation or issued addenda; NIH should confirm bid-evaluation treatment for unknown utilities, hazardous materials, rock/obstructions, hidden concrete repair, and similar pricing risks.

RFI-055 M.5 states failure to comply with proposal submission instructions may result in elimination, but required submission checklist should be confirmed.

Please confirm the complete proposal submission checklist, including SF1442 execution, technical sections, price proposal, bid guarantee, bonding commitment, acknowledgments/amendments, representations/certifications, subcontracting/limitations on subcontracting compliance, and any required attachments/forms.

RFI-047, RFI-052, RFI-060, RFI-

See section L in the revised solicitation document.

RFI-056 M.5 references Small Business Set-Aside and Limitations on Subcontracting compliance, but proposal evidence requirements are not specified.

Please confirm whether offerors must submit a self-performance/limitations-on subcontracting narrative or percentage breakdown with the proposal, and clarify how specialty subcontracted trades will be treated for compliance purposes.

Not needed.

RFI-057 The specifications indicate space is allocated for temporary contractor offices, but the extent of Government-provided office support is not defined.

Please confirm the extent of Government-provided temporary contractor office space, including whether NIH provides only the physical space or also desks, chairs, internet/phone service, power, cleaning, access, and other office support. Also confirm whether an onsite trailer, storage container, or separate field office is permitted or required near the work area.

Specification section -015000-2.2.G EQUIPMENT information in building 10 does not apply to this project in building 31B.

RFI-058 The work involves below-grade waterproofing replacement and tie-ins while maintaining the building in a safe and weathertight condition. Temporary waterproofing/phasing requirements during demolition, excavation, rain events, and permanent membrane installation are not fully defined.

Please confirm the required phasing, sequencing, and temporary waterproofing/weather protection measures for exposed roof/wall/foundation areas during demolition, excavation, substrate preparation, permanent waterproofing installation, testing, and backfill/overburden placement. Please also confirm whether temporary waterproofing must remain in place during off-hours, weekends, rain events, or phased turnover of work areas.

RFI-100 Phased work is acceptable only with a weathertight building and approved weather/rain protection plan. Protect exposed substrates and complete/protect waterproofing each work period where practical.

RFI-059 The specifications identify waterproofing systems and products, but it is not clear whether equivalent manufacturer/material substitutions will be accepted during submittal review.

Please confirm whether waterproofing materials and related system components may be substituted with approved equal materials/manufacturers that meet or exceed the specified performance requirements, warranty requirements, compatibility requirements, and manufacturer inspection/testing requirements. If substitutions are permitted, please confirm the required documentation and approval process.

RFI-157 Subsitute are accepted if contractor provided product meest the contract documentations.

RFI-060 Solicitation appears incomplete and is missing many typical sections, please provide complete solicitation to better understand complete Contract requirements. Additionally, for Contractor proposals, Section L, Instructions to Offerors is needed. While Section M, Evaluation Factors for Award, was included, it does not provide sufficient detail regarding the requirements for the proposal.

RFI-047, RFI-052, RFI-055, RFI-

Section L will be incorporated (see attached revised solicitation document).

RFI-061 Please confirm that Contractor is required to have a Superintendent, Quality Control Manager, and Safety Officer on site at all times during construction. Contractor recommends Superintendent to carry the roles of QCM and SSHO.

RFI-006, RFI-007, RFI-008, RFI-

051, RFI-078

Refer to the Construction Documents for the roles and responsibilities of the Superintendent, Quality Control Manager and Safety Officer. See Specification Section 01 4500 Construction Quality Control and Section 01 5950 Safety and Health.

RFI-062 Please provide the Wage Determination for the project. RFI-080, RFI-083 Wage Determination has been added to the attachment section of the SAM posting.

RFI-063 Please confirm that Contract is able to close one lane of the loading dock entry road. This will be necessary to facilitate the majority of the project. Additionally, at least one bay of the loading dock will need to be closed to facilitate the work in section detail 41/A-502.

RFI-021, RFI-129 Refer to RFI-021. Lane Closure is subject to Site Selection and road closure approval process.

RFI-064 Please confirm whether it is acceptable to reuse excavated soil. If acceptable, please confirm if there is a location in the vicinity of the project site to stockpile the soil. Additionally, please provide soil proctor if available.

RFI-040, RFI-134, RFI-148, RFI-

149, RFI-150

Refer to earthwork specification Section 3.8 for reuse/storing of excavated spoils.

RFI-065 Please confirm that DFM has approved the plan to temporarily close the egress door at the stairs to be demolished and replaced.

RFI-020, RFI-042, RFI-066, RFI-

094, RFI-130, RFI-131

Refer to RFI-020. Refer to Construction Documents for Life Safety including egress requirements.

RFI-066 Please confirm whether Contractor is responsible for coordinating and implementing closure of occupied spaces beneath and within work area.

RFI-020, RFI-042, RFI-065, RFI-

094, RFI-130, RFI-131

Confirmed.

RFI-067 Please confirm if all Contract personnel are able to receive badges for the duration of the project.

Refer to the weblink on SOW for NIH access information.

RFI-068 Please confirm whether Contractor will be required to adhere to all State Highway Administration requirements for the execution of the project or if the requirements are solely for materials and drawing details.

RFI-039, RFI-069, RFI-086, RFI-

It is confirmed that the Contractor will be required to adhere to all State Highway Administration requirements.

RFI-069 Please confirm the NIH permitting requirements for the project. Additionally, please confirm if an MDE permit has been acquired and provide, otherwise please provide a timeline for acquiring the permit.

RFI-039, RFI-068, RFI-086, RFI-

Permits have been acquired and the MDE permit is waived. A copy can be sent for record.

RFI-070 Please confirm if brick is required and/or permitted to be reused for wall reconstruction. RFI-147 Reuse salvageable brick where possible; provide new matching brick if existing brick is damaged or insufficient. Submit masonry samples/submittals before ordering.

RFI-071 There is a significant infrastructure project near the project site, that currently includes a significant footprint and excavation. Please advise the timeline of this project.

This is for the underground utility construction, and the project completion date will be August 2027.

RFI-072 Please confirm the thickness of the concrete gutter to be demolished. RFI-036 Contractor to verify in field.

RFI-073 Please confirm the Noisy work hours. RFI-004, RFI-015, RFI-116, RFI-

Refer to RFI-004/RFI-015.

RFI-074 Please advise how Contractor is expected to price Concrete Repairs for unseen areas including non-exposed interior locations and buried exterior locations.

RFI-088, RFI-144, RFI-156 Drawings define repair method, not quantities. Final limits are determined after exposure per A- 111/A-505; The contractor shall submit RFIs for Unforeseen Conditions related work once the building exterior is exposed that may be processed as change orders.

RFI-075 Per Paragraph 1.11.1.A of the NIH DRM, Petroleum-based contact adhesives are considered hazardous substances and the use of alternative non-hazardous materials are preferred unless unavoidable, inferior, or cost prohibitive. Contract Documents (A-503 and specification section 07 1413) call for a HRA (Hot Rubberized Asphalt) Waterproofing across the structure. This material has a significantly strong odor, and is not the specified Manufacturers (Henry) recommended product for this application. Per the local manufacturers representative," We would like to propose the Henry Prodeq cold fluid applied polyuria system in lieu of the Henry 790-11 hot rubberized asphalt system. The hot rubber system is an excellent waterproofing system, however on this project it would not be the best system based on the project conditions.

Henry 790-11 has a strong odor due to the asphalt being heated and will very likely have issues with the occupants in the building and around the immediate area. It is also very difficult to apply a 215 mil system to a vertical wall more than a few feet tall. In this application we may have to go up to 16 feet and this would not be optimal. Our cold applied Miraseal product also has odor and would not be the best choice. Henry Prodeq is a liquid applied polurea and has no odor, rapid set time (3 minutes) and can be spray applied with a spray rig. The system does not need to be reinforced, detail work is incredibly easy and efficient. Henry also has a tech present for the installation to ensure proper install. This system has been used on a number of high profile projects across the country and has had great results. “Please confirm if NIH will accept the system as recommended by the specified Manufacturer, or if Contractor is to use the specified product which is an inferior product for the application as determined by the manufacturer and would therefore go against the NIH DRM as detailed above.

RFI-044, RFI-153 Refer to RFI-044 and RFI-059.

RFI-076 Please confirm if shoring beneath the concrete deck is an acceptable method to increase the permitted bearing on the structure which the drawings currently state as 600 PSF.

RFI-037, RFI-128 Refer to RFI-037. Same topic: Structural review / slab loading / penetrations.

RFI-077 Please confirm that Contractor has no responsibility for testing and abatement of Hazardous Materials. Additionally, please confirm if any Hazardous Material testing has been performed to date. It is expected that if HazMat is discovered in the existing envelope system, this will create a significant schedule impact to the project.

RFI-081, RFI-133, RFI-154 The contractor shall submit an RFI for Unforseen Conditions related work that may be processed as change orders. Abatement and related testing are conducted by NIH DEP. The contractor shall cooridnate with the PO and DEP.

RFI-078 Do the Superintendent, SSHO and QC Manager need to be 3 separate individuals? RFI-006, RFI-007, RFI-008, RFI-

051, RFI-061

Refer to construction documents for roles and responsibilities of the 3 individuals. See Specification Section 01 4500 Construction Quality Control and Section 01 5950 Safety and Health.

RFI-079 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?

RFI-001, RFI-053, RFI-084, RFI-

If delays occur due to possible supply chain issues, a time extension modification may be granted.

RFI-080 Please provide the site visit attendee sign in sheet. RFI-062, RFI-083 Please see the attachment section of the SAM posting.

RFI-081 Please confirm whether asbestos or lead is present on this project, and if so, provide the relevant documentation.

RFI-077, RFI-133, RFI-154 Refer to RFI-077. NIH DEP will conduct hazardous materials testing once the below grade building exterior is exposed.

RFI-082 (If building is occupied) Are there any phasing requirements? How many people will be in the building? Are there any temporary heating/cooling requirements?

Phasing is not noted in the project, but the contractor may propose if deemed necessary. Refer to construction documents for temporary services.

RFI-083 Is this project tax exempt? RFI-062, RFI-080 No it is not tax-exempt.

RFI-084 When do you anticipate on site work starting? RFI-001, RFI-053, RFI-079, RFI-

Work can start as soon as the notice to proceed is issued.

RFI-085 Are third party inspections required? Yes.

RFI-086 Is permitting required? RFI-039, RFI-068, RFI-069, RFI-

Not required. MDE waiver was submitted and approved for this work.

RFI-087 Are soil boring reports available? If not, it will be assumed that excavation will be clear of rocks and obstructions.

RFI-135 No soil boring reports are available.

RFI-088 Please provide bidding quantities for deteriorated underlayment (roofing)/base course (paving). RFI-074, RFI-144, RFI-156 Refer to RFI-074. No further information is available of the existing roofing materials.

RFI-089 Please confirm the manufacturer of the existing roofing system and who carries the current warranty of the roofing system.

RFI-138 No further information is available of the existing roofing manufacturer or warranty. See A-501 through A-503 for new tie-ins; any active existing warranty/manufacturer requirements are owner-record items.

RFI-090 Is there a bulk water fill i.e. a hydrant or water source we can pump from for grading operations in close proximity?

No dedicated bulk-water source is identified in the AE documents; Contractor shall coordinate hydrant or building water use with NIH before use.

RFI-091 Are partitioning, dust containment, and/or negative air machines required for this project? Provide dust barriers and negative pressure where required.

RFI-092 What is the known composition of the existing below-grade waterproofing and roofing systems being removed, and has hazardous materials testing been completed for these materials?

No further information is available of the existing roofing. See A-100 and the demolition/waterproofing details identify materials to be removed; hazardous testing records are owner-record items.

RFI-093 Are there contaminated soils anticipated? No further information is available on the soil. See A-100 hazardous-materials note and contract differing-site-condition requirements.

RFI-094 Will the gym below be occupied during construction? RFI-020, RFI-042, RFI-065, RFI-

066, RFI-130, RFI-131

Refer to RFI-020. Refer to construction document for closure information of space below the project area.

RFI-095 Where is the designated laydown/stockpile area? RFI-023 Refer to the construction documents for layout showing the Project Area. See IFC site logistics drawings and NIH site-selection approval process.

RFI-096 Has the Government performed any destructive investigation of existing structural slabs, walls, foundations, or retaining walls within the excavation limits? If so, provide findings and reports.

BOD contains design-team investigation/observations. contractor to field verify other existing condition. No destructive investigations have been performed by the Government.

RFI-097 Please identify which existing underground utilities are active, abandoned, or to remain in service within the project limits.

RFI-026, RFI-109 Refer to construction documents for site utilities information. Contractor field verification requirements.

RFI-098 Is the intent for the waterproofing system to be provided under a single-source manufacturer warranty? If so, specify required warranty duration and approved manufacturers.

RFI-046, RFI-136 Refer to RFI-046.

RFI-099 Will flood testing or electronic leak detection testing be required prior to backfill operations? RFI-033, RFI-034, RFI-155 Refer to RFI-033.

RFI-100 Can excavation and waterproofing work be phased in smaller sections, or is full excavation anticipated before waterproofing installation?

RFI-058 Refer to RFI-058.

RFI-101 Is temporary excavation shoring/bracing required? RFI-009, RFI-022, RFI-102, RFI-

125, RFI-126, RFI-127

Contractor to verify as this is means and methods.

RFI-102 Please confirm anticipated excavation depths and limits adjacent to the structure and whether underpinning is anticipated.

RFI-009, RFI-022, RFI-101, RFI-

125, RFI-126, RFI-127

Contractor to verify as this is means and methods.

RFI-103 Has the existing storm drainage system capacity been evaluated for the proposed new drainage connections?

RFI-118 Yes, existing storm drainage capacity has been evaluated with the proposed drainage connections.

RFI-104 Please identify anticipated shutdown windows and restrictions for storm drainage tie-ins. RFI-028 The contractor shall plan and schedule shutdowns accordingly.

RFI-105 Please clarify whether retaining wall reconstruction is full replacement or partial reconstruction where indicated.

Retaining wall work is partial removal/restoration only where indicated. Full replacement is not included unless field conditions and NIH/Architect authorization require it.

RFI-106 Please clarify tree protection requirements and identify trees that are required to remain versus approved for removal.

RFI-041, RFI-107, RFI-108 See sheets C-300 and C301 for tree protection requirements. See sheets C-201 and C- 800 for tree removal and tree placement.

RFI-107 Please clarify whether all disturbed landscaping areas outside drawing limits are to be restored by contractor.

RFI-041, RFI-106, RFI-108 Sheet C-800 for requirements.

RFI-108 Are there existing irrigation systems within the excavation limits that must remain operational or be restored?

RFI-041, RFI-106, RFI-107 To the best of our knowledge, there are no existing irrigation systems within the excavation limits.

RFI-109 Please identify known underground electrical duct banks/utilities within excavation zones. RFI-026, RFI-097 Refer to RFI-097.

RFI-110 Will any existing emergency circuits, fire alarm circuits, or communications infrastructure require temporary rerouting during excavation?

Temporary rerouting of cabling infrastructure is not anticipated to enable excavation.

RFI-111 Please clarify restrictions for cranes, excavators, dump trucks, or large equipment access adjacent to Building 31B.

Refer to the construction documents for heavy vehicle site access information. See IFC civil/site access drawings and C-201/C-300 slab load-limit notes.

RFI-112 Please clarify the contract duration. The solicitation references completion within 300 days after Notice to Proceed, while the revised Statement of Work dated 05/04/2026 states the project is to be completed within 300 workdays from Notice to Proceed.

RFI-001, RFI-053, RFI-079, RFI-

300 workdays from the notice to proceed being issued.

RFI-113 Please clarify whether BIM is required for this project. Section 01 1000 states that the work includes comprehensive Building Information Modeling services, while the revised SOW states that BIM is not required unless the contractor chooses to use BIM. Please confirm whether BIM, clash detection, BIM meetings, Revit/IFC deliverables, or 3D PDF deliverables are required.

RFI-017 Refer to RFI-017. Same topic: BIM / CAD / record drawing requirements.

RFI-114 Please confirm which portions of Division 26 apply to this project. Section 26 0101 references renovation of lighting, power, low-voltage, and fire alarm systems in NIH Building 49 Level 1 lobby and adjacent corridors, which does not match the Building 31B water intrusion scope.

RFI-115 260101 E.1 (Page 357) is not correct. Electrical work is limited to new power to support the duplex sump pump installation.

RFI-115 Please clarify whether commissioning/CxA requirements in Division 26 apply to this project, or whether those references are boilerplate and superseded by the revised SOW’s Construction Quality Management requirements.

RFI-114 260101 E.2 (Page 357) is not correct. No electrical commissioning is anticipated.

RFI-116 Please clarify whether weekend work is permitted and what approval process is required for work outside normal working hours.

RFI-004, RFI-015, RFI-073, RFI-

Refer to the construction document for After Hour work information.

RFI-117 Please confirm whether the sump pumps and sump pump control panel are NIH IWMS-tracked assets requiring asset turnover forms and physical asset tags. If so, please provide required asset identifiers, tagging requirements, and turnover requirements. Please also confirm final BAS alarm routing/receiving location for sump pump alarm and pump status points.

RFI-029 Sump Pumps are considered assets requiring asset tags.

RFI-118 Please clarify the foundation drain discharge and structure designation. The architectural details reference a drain pipe to manhole “S7,” while the civil/plumbing drawings appear to identify the sump pump manhole/structure as S5/MH-1. Please confirm the correct structure ID, discharge route, tie-in point, and discipline responsibility for foundation drain piping.

RFI-103 Civil and MEP to coordinate structure ID. MEP to confirm foundation drain details.

RFI-119 Please provide a single governing pipe material schedule for all exterior storm, French drain, foundation drain, and pumped storm drainage piping. Civil drawings/specifications reference HDPE, PVC, RCP, and plastic drain basins, while plumbing specifications reference cast iron storm piping, Type L copper pumped stormwater piping, and perforated PVC foundation drains.

Please confirm pipe material, size, SDR/class/schedule, perforated versus solid pipe, fittings, couplings, insulation requirements, and responsibility by discipline.

RFI-120, RFI-121 Pipe material and size is called out on sheets C-500 and C-600. The associated requirements for the materials/fittings/couplings, etc. are shown on in the project specifications.

RFI-120 C-600 indicates that a 4-inch PVC pipe run shall be insulated. Please provide the required insulation material, thickness, jacket/protection, installation detail, and limits of insulation.

RFI-119, RFI-121 Civil and MEP to coordinate pipe insulation details.

RFI-121 Please confirm whether the 4-inch PVC insulation requirement applies only to the specific run shown or to all shallow exterior drainage piping.

RFI-119, RFI-120 The insulation only applies to the 4-inch PVC pipe run as shown on the plans.

RFI-122 Please provide temporary drainage and dewatering criteria, including pump capacity, backup power requirements, discharge location, filtration/sediment control requirements, and treatment requirements if contaminated water is encountered.

RFI-123 MEP to confirm temporary drainage and dewatering criteria.

RFI-123 Please clarify how temporary drainage is to be maintained after existing storm structures and piping are removed and before the new system is operational.

RFI-122 This is means and methods by the Contractor and should be included in their bid.

RFI-124 C-201 references a possible buried structure that was not found and may not exist, but also directs the contractor to remove it if found and install the new doghouse/inlet regardless. Please clarify the expected condition, required exploratory work, removal limits, pay basis if encountered, and whether the new doghouse/inlet location changes if the buried structure is present.

This is means and methods by the Contractor and should be included in their bid.

Location of new structure is shown on sheet C-400.

RFI-125 Please provide temporary support-of-excavation design criteria for excavation adjacent to existing retaining walls, masonry/screen walls, the loading dock plaza slab, and the below-grade structure.

RFI-009, RFI-022, RFI-101, RFI-

102, RFI-126, RFI-127

Will provide it

RFI-126 Please clarify allowable surcharge, minimum factors of safety, restrictions on tiebacks/anchors, monitoring requirements, vibration limits, and review/approval requirements for excavation support and shoring.

RFI-009, RFI-022, RFI-101, RFI-

102, RFI-125, RFI-127

Will provide it

RFI-127 Please confirm whether the contractor’s delegated shoring engineer is responsible for temporary support of the retaining wall, masonry/screen wall, and loading dock plaza slab.

RFI-009, RFI-022, RFI-101, RFI-

102, RFI-125, RFI-126

It is confirmed that the Contractor's delegated shoring is responsible.

RFI-128 Please confirm whether any proposed equipment plan over or adjacent to the below-grade structure must be reviewed by the Structural Engineer of Record before use.

RFI-037, RFI-076 Refer to RFI-037.

RFI-129 A-100 requires coordination with NIH to maintain one lane of loading dock access. Please confirm required lane width, allowable closures, working hours, flagging/traffic control requirements, delivery restrictions, protection requirements, and whether a formal loading dock access/phasing plan is required.

RFI-021, RFI-063 Refer to RFI-021.

RFI-130 Please confirm temporary egress requirements while the exterior egress stair is removed and reconstructed, including allowable closure duration, barricades, temporary signage, alternate egress route approval, NIH Fire Marshal/AHJ review, and criteria for reopening the stair and egress door/path.

RFI-020, RFI-042, RFI-065, RFI-

066, RFI-094, RFI-131

Refer to RFI-020.

RFI-131 C-201 states that the space below the work area shall not be occupied and shall be cordoned off. Please identify the exact rooms/areas affected, required duration of non-occupancy, responsibility for barricades/signage, occupant notification requirements, and whether interior protection, dust control, temporary relocation, or after-hours work is required.

RFI-020, RFI-042, RFI-065, RFI-

066, RFI-094, RFI-130

Refer to RFI-020. Refer to the construction documents for…