Amendment 3

1. Question: How many out of the 160 NEXRAD sites are in need of immediate evaluation/repair?

Government Response: None, as the existing IDIQ that is expiring will cover any needs that arise before this IDIQ is established. Once this IDIQ is established, task orders will be issued on an as needed basis.

2. Question: Are all of the 160 sites expected to be evaluated during the course of the contract?

Government Response: It’s not possible to determine if all sites will be evaluated during the course of the IDIQ. Evaluations and repairs come up on an as needed basis and will be issued as task orders.

3. Question: The attached drawings in the solicitation are of poor resolution and cannot be read insofar as dimensions and other pertinent information of the tower installations.

Would it be possible to supply updated drawings with higher resolution to the solicitation, or send us drawings so that we can evaluate the site's construction details?

Government Response: Two additional attachments have been added to this solicitation that further detail a tower example.

4. Question: Can the completed SF1449, Pricing Schedule, FFP scenario quote, SASH response, insurance certificate, Safety Plan, OCI statement, and provision responses be submitted as separate attachments outside the Volume II 20-page limit?

Government Response: Yes.

5. Question: Are the cover page, table of contents, tab dividers, and completed Past Performance Information Forms excluded from the 20-page Technical Proposal limit?

6. Question: The solicitation allows vendors to complete the Pricing Schedule Attachment or submit their own pricing sheet. It is our understanding that vendors may include additional labor categories, equipment rates, mobilization and travel assumptions, subcontractor categories, and discount structures necessary to price future FFP task orders accurately. Please confirm.

Government Response: Vendors may include additional labor categories. However, at minimum, please fill out the existing pricing schedule and add additional supplemental assumptions like equipment rates, mobilization, travel assumptions, etc. as you see necessary. A quote does not need subcontractor categories; the quote must explicitly state the exact aspects and percentage of work under this solicitation that the subcontractor is slated to perform.

7. Question: Can the Government confirm whether a Wage Determination applies to this acquisition and, if so, provide it by amendment?

Government Response: Due to the number of Wage Determinations that will apply throughout all the potential task orders, the Government cannot attach all applicable wage determinations. However, all Wage Determination numbers are listed within the Tower Sites Attachment.

8. Question: The solicitation defines relevant past performance as similar or identical in scope, dollar value, and multi-site logistical complexity. It is our understanding that tower maintenance, structural repair, galvanic/coating restoration, and multi-site communications infrastructure contracts may be considered relevant even if not performed on WSR-88D radar towers specifically. Please confirm.

Government Response: Vendors are welcome to submit all past performance they find relevant to this acquisition even if that past performance is not specifically for WSR-88D radars.

9. Question: It is our understanding that vendors should not include proprietary or source-selection-sensitive incumbent information in their proposals and should rely only on information provided in the solicitation, public records, or Government-provided Q&A responses. Please confirm.

Government Response: Yes. Use information included in the solicitation, public records, or responses from the Government point of contact.

10.Question: It is our understanding that the 7/10/30-day report submission clocks begin upon completion of the on-site inspection or evaluation, not upon task order issuance.

Please confirm.

11.Question: Section 5.1 requires galvanic coating thickness, structural member thickness, and ground resistance measurements. Please confirm whether the Government has a preferred measurement method, calibration standard, reporting format, or minimum number/location of readings for these measurements.

Government Response: Utilize ASTM D7091-22, ASTM E376 & ANSI SSPC-PA 2 for galvanic coating thickness measurement guidance. Non-destructive testing is preferred.

Follow ASTM E376 for magnetic-field or eddy current testing guidelines including:

calibration and number of sections and readings taken for each structural member.

Structural member thickness testing shall be conducted utilizing non-destructive ultrasonic thickness measurement in accordance with ASTM E797. A through-coat or multiple echo method should be used to only measure the base metal.

Fall-of-Potential Ground Resistance testing shall be conducted in accordance with IEEE Standard 81: Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials.

12.Question: Section 5.2 references a single complete tower kit held in Government storage for catastrophic loss reconstitution. Can the Government confirm the kit's current configuration?

Government Response: Disassembled and stored. The Government will inform the vendor when the stored tower kit is to be used in part or whole through the task order request process. When this kit is used on any task order, the Government will require the used parts be procured to backfill the stored kit.

13.Question: Please provide the Government's preferred test method, acceptance threshold, or reporting format for the soluble salt test required as part of the completion checklist.

Government Response: Utilize the Bresle Method outlined in ISO 8502-6, 8502-9. An acceptance threshold value of 50 mg/m^2 shall be maintained.

14.Question: It is our understanding that the "Ironworker Supervisor Travel" and "Ironworker Travel" rates (and corresponding Onsite rates) cover travel time and per diem to remote or OCONUS sites distinct from labor performed at the work site, and that mileage and transportation costs beyond labor hours are reimbursed separately as Other Direct Costs under individual task orders. Please confirm.

15.Question: Scenario 2 states work is to be performed "according to a prior inspection report" that is not provided. It is our understanding that vendors may make reasonable assumptions about prior inspection findings, access conditions, coating condition, hardware quantities, and required outage window for the FFP example quote, and may state pricing assumptions for unspecified quantities (clamps, wire ties, ground clips, hardware, bolts) to be reconciled at task order award. Please confirm.

Government Response: That is correct.

16.Question: Scenario 2 requires cleaning and painting the entire tower. Please confirm whether the Government expects vendors to assume full containment, surface preparation, coating application, soluble salt testing, dry-film thickness verification, and site restoration as part of the FFP scenario response.

Government Response: Yes, the vendor will perform the above duties.

17.Question: Scenario 3 states the Government will be responsible for restoring the radar and tower. It is our understanding that that the Contractor is not responsible for erecting, assembling, or accepting the replacement tower unless separately directed in a funded task order. Please confirm.

Government Response: Correct.

18.Question: Scenario 3 requires acquisition from the OEM and delivery of one FSP 30-meter tower to NLSC. Please confirm whether the 120-day GFM replenishment requirement in PWS Section 5.2 applies to this scenario, and if so, when the 120-day clock begins.

Government Response: The 12- day clock begins after award of the task order.

19.Question: Scenario 3 references Microflect part number D-116712-2 Rev A and the corresponding Valmont/Microflect drawing. Please confirm that the Government will provide the applicable OEM drawing, module/pallet marking requirements, emergency identification marking requirements, and any required inventory template before shipment, and that the Government will provide site access, POC information, and any site-specific safety/security requirements at NLSC Grandview MO, the Puerto Rico storage location, and the San Juan/Cayey site.

Government Response: Yes, for a real task order, the Government would provide all of those details.

20.Question: Can the awardee work on weekends?

Government Response: Site specific and evaluated by project need/scope, however, yes weekend work can be allowed.

21.Question: Do all sites require escorts? If yes, what are the hours the awardee can work?

Will all federal holidays be non-working days? Who will provide the escorts, and will escorts be limited by day, time, or overtime?

Government Response: Site specific and evaluated by project need/scope. Not all sites will require escorts. All Department of War sites will require escort anytime the awardee is on site. Working on Federal Holidays will be evaluated on a case-by-case basis.

22.Question: Will the awardee need any security clearances? Are there any online or in-person training programs required to obtain access to any sites?

Government Response: Individuals would need a Real ID or current passport and/or pass a background check to access some sites on a case-by-case basis. Although no training programs would be required for access, some online forms may need to be completed prior to arrival to certain sites that have a higher security presence.

23.Question: Will there be any coordinates, addresses, and pictures of these sites provided?

Government Response: Information beyond what’s listed in the Tower Sites Attachment will not be provided at this time. Additional information will be provided to the awardee as task orders are issued.

24.Question: For the overseas sites, please explain the access and/or escort system. Are there any exemptions for the overseas sites? For OCONUS installations specifically Kadena AB (Japan), Camp Humphreys and Kunsan AB (Korea), Guam, and Puerto Rico will host-nation work permits, SOFA sponsorship, or other special access requirements be needed, and will the Government assist in obtaining them?

Government Response: Overseas sites are operated by the Department of War and will require background checks and escort while at the radar site. Any potential SOFA sponsorships will be handled at the task order level.

25.Question: Are the additional three sites mentioned in the US or international? Can vendors have information about those potential locations?

Government Response: The potential locations are unknown at this time.

26.Question: Assuming the radar needs to be powered down at some point for sites, please explain the notice and procedures for that. When radar shutdown is required, are shutdowns restricted to certain hours or days (e.g., weekday working hours vs.

after-hours/weekend work)?

Government Response: Site technicians will power the radar down if required.

Minimum 24-hour notice and coordination with the site, COR, region, and Radar Operations Center.

27.Question: What is the scheduling process? How much notice is required?

Government Response: Initial schedule coordination is done between the awardee and the COR.Most work is scheduled weeks in advance. After the initial schedule is coordinated and approved by the COR, the awardee is to then contact the provided site POC at least one week prior to their crew arriving on site in order to coordinate the crew’s work schedule and site access.

28.Question: Will any government transportation be available to remote sites?

Government Response: No.

29.Question: The PWS (§5.1) and task-order clauses indicate work may be released for "a specific WSR-88D Tower site or sites." Does the Government anticipate issuing task orders covering multiple sites at once, or generally one tower structure at a time? How will the Government prioritize and sequence sites (e.g., routine vs. urgent, geographic groupings)?

Government Response: Task orders are issued on an as needed basis and may include any number of sites for either a tower inspection or maintenance. The task order request will include the list of sites and any notes about prioritization during the period of performance. Various sites may require simultaneous services that are not in the same geographic area.

30.Question: Does the drawing sent over mean each of these sites is that exact tower?

Government Response: No. Towers come in various sizes. That drawing is meant as a general example.

31.Question: When was the last time these towers were inspected?

Government Response: Task orders are periodically issued throughout a fiscal year when services are required. Some towers have been inspected more frequently than others. Given the multitude of sites, it's challenging to list when each tower was last inspected.

32.Question: SF1449 Block 10 indicates "UNRESTRICTED," yet Section I incorporates 52.219-6 (Total Small Business Set-Aside) and 52.219-28. Please confirm whether this acquisition is unrestricted or set aside for small business, as this affects our teaming structure.

Government Response: Block 10 is mismarked. This requirement is not unrestricted.

This is a total small business set-aside.

33.Question: Please confirm the acceptable prime/subcontractor or joint-venture arrangement, and how each entity's SAM registration, size status, and the workshare disclosure required by 52.212-1 should be presented in the quote.

Government Response: The Government only contracts with the Prime Contractor. A true joint venture would have their own SAM entity that would qualify their socioeconomic status to be eligible under this solicitation.

34.Question: The team may seek to subcontract certain sites, particularly OCONUS locations, to local vendors. Are there any limitations, restrictions, or Government expectations regarding subcontracting to local vendors — including at overseas installations — and how would the use of local-national subcontractors interact with the Davis-Bacon and OCONUS ("N/A") wage-determination requirements noted in Attachment 6?

Government Response: At this time, there are no subcontracting restrictions. However, all local laws apply. Applicable Wage Determinations will be provided at the task order level.

35.Question: Please confirm that subcontractors performing climbing or CLIN 0002 work must meet the same PWS certification requirements (climber certifications, safety plan/HASP, registered structural engineer certification).

Government Response: Our contract will be with the prime who is responsible for ensuring their crews (whether internal or subcontractor) meet the PWS certification requirements.

36.Question: Section L (52.212-1) states questions are due July 6, 2026, 3:00 PM CDT, while CAR 1352.215-72 states "no later than 14 calendar days after issuance." Please confirm the single controlling question due date.

Government Response: This solicitation was issued June 22, 2026 and 14 calendar days after that date is July 6, 2026. Questions were due by July 6, 2026, 3:00PM CDT.

37.Question: Section L excludes the Past Performance Information Forms from the page count but does not state a page limit or format for the Volume III narrative itself. Please confirm any limits.

Government Response: Section L states “The vendor must provide a detailed narrative within Attachment – Past Performance Information Form explicitly demonstrating how each reference maps to the technical requirements of this solicitation.” A separate narrative should not be provided.

38.Question: Section A references administering the award via FedConnect, while Section L requires quotes by email to taylor.wisneski@noaa.gov. Please confirm email is the sole required method for quote submission.

Government Response: Once an awardee is selected, an award notice will be sent to FedConnect. Quotes are to be sent, via email, to taylor.wisneski@noaa.gov. FedConnect is not involved at the solicitation phase.

39.Question: If field inspection services are released together, may they be completed best-way geographically at the Contractor's discretion?

Government Response: Task orders will be issued on an as needed basis. There is no guarantee that a task order will have geographically related sites. However, if multiple sites are in the same region on a task order, the Government will discuss with the awardee any urgency or issues scheduling services in a particular order.

40.Question: Will CLIN 0001 (inspection/evaluation), CLIN 0002 (repair/coating), and CLIN 0003 (engineering data/ECP) typically be issued as separate task orders, or bundled per site?

Government Response: Task orders are issued on an as needed basis. Some sites may require multiple CLINs where others may only require one CLIN. Generally, a task order would include either an inspection or a repair task for any one site. If an inspection is ordered, the repair would generally be completed on a separate, future task order.

41.Question: The contract guarantees a $12,000 minimum against a $9,414,458 maximum over five years. Can the Government provide an estimated annual task-order volume, historical spend, or a notional inspection schedule to support realistic labor-rate and staffing planning? Additionally, is the pace of task-order issuance driven by annual budget/appropriations, or would the Government consider accelerating the initial inspection program (e.g., completing the initial inspection sweep within a single year) if the Contractor demonstrates the capacity to do so?

Government Response: The Government cannot provide any estimates as they relate to cost. Task orders are issued on an as needed basis; there will not be accelerations of inspections if inspections are not needed.

42.Question: Please confirm the intended use of the Pricing Schedule rates. Should the three scenario FFP prices be built from these Pricing Schedule rates, or are the scenario prices independent FFP quotes with the Pricing Schedule serving only as the ceiling rate schedule for future task orders?

Government Response: The Pricing Schedule encompasses labor categories that would generally be used for CLINs 0001, 0002, and 0003 as a baseline to evaluate vendors’ quotes. As identified in Question 6, additional rates can be included. Vendors are allowed flexibility when deriving pricing for the three scenarios as those are only used for evaluation purposes.

43.Question: The PWS Background addresses the general drivers for this program (life-cycle maintenance, catastrophic recovery, 96% availability). Are there any specific recent tower failures, known deficiencies, or a maintenance backlog that will drive near-term (Year 1) task orders, to support Contractor staffing and readiness planning?

Government Response: The Government cannot provide any estimates as they relate to cost and funding. Task orders will be issued on an as needed basis.

44.Question: The PWS defines URGENT task orders (48-hour CONUS / 96-hour OCONUS on-site response) and requires the inspection report to indicate the urgency of each proposed corrective action. Please clarify the following regarding critical/disaster response: (a) Once an inspection identifies a critical or safety-of-structure condition, is there a required or expected timeframe for the Contractor to mobilize and address the condition (beyond the stated maximum radar downtime of 30/45 days)? (b) Will the criticality/priority of an identified condition be determined by the Contractor's inspectors, by the Government, or jointly? (c) Is a formal critical-response or contingency plan a required or expected deliverable, separate from the safety plan/HASP?

Government Response: (a) The expected timeframe for the Contractor to mobilize and address/repair the condition would be handled on a follow-on task order separate from the initial urgent tower inspection task order. (b) The Contractor’s inspection report documents the condition of the tower and informs the Government of findings and recommendations for repairs and/or maintenance. The Government uses tower inspection results to determine future task order requirements. (c) No.

45.Question: Please reconcile the total site and tower counts. Attachment 6 lists 145 numbered CONUS sites, additional Alaska/Hawaii/OCONUS sites (through #162, San Juan), a separate "NLSC MO – 3 additional locations" line, and "up to three additional sites may be added (TBD)," while the PWS states 160 operational + 2 non-operational = 162 towers. Please confirm the total number of sites and total number of towers to be covered, and clarify the "NLSC MO – 3 additional locations" entry.

Government Response: The PWS is correct for the tower maintenance site locations.

The NLSC does not have towers to maintain, but the catastrophic tower kit is stored in Grandview, MO.

46.Question: The PWS states the Government will provide "directions to and admittance to the Tower site." For sites on U.S. military installations (e.g., Air Force bases), are there special access, credentialing, or badging requirements beyond standard installation access, and what lead time should the Contractor assume for base access approvals?

Government Response: Individuals would need a Real ID or current passport and/or pass a background check to access some sites on a case-by-case basis. Although no training programs would be required for access, some online forms may need to be completed prior to arrival to certain sites that have a higher security presence. Site access requirements will be handled during schedule coordination between the Awardee and

COR.

47.Question: FAR 52.212-4(k) states the contract price includes all applicable duties. For materials shipped to OCONUS U.S. military installations, will the Government furnish tax/duty-exemption or SOFA import-relief documentation to the Contractor, or is the Contractor responsible for all import duties?

Government Response: The contractor is responsible for all import duties.

48.Question: Please clarify the RF output (wattage) of the antenna(s).

Government Response: Average RF Power Output (0.3 to 1.3 kW).

49.Question: The PWS (§7) specifies climber certification standards (OSHA 1910.268, ANSI Z359/Z490, NATE CTS) and requires a safety plan/HASP with the proposal and annually per ordering period. Is there a required format or template for the safety plan/HASP, or is a Contractor-format plan acceptable (consistent with the report formatting elsewhere in the PWS)?

Government Response: Contractor format is acceptable.

50.Question: Will drone (UAS) usage be allowed to supplement climbed-tower data and original documentation? If so, are there any special drone requirements or restrictions (e.g., on military installations)?

Government Response: Drones can be allowed on a case-by-case basis depending on the site location. Requests to use a drone can be made during the task order process.

51.Question: For older Valmont-Microflect structures, will the Government provide records of existing coatings (e.g., lead-based paint) that would trigger OSHA/EPA containment or abatement requirements during CLIN 0002 work? (The PWS requires soluble salt testing and proper disposal of hazardous materials but does not characterize existing coatings.)

Government Response: Galvanized steel and zinc rich paint.

52.Question: The PWS specifies inspections based on OEM Valmont-Microflect engineering data and galvanic coating restoration per ASTM A-780. For tower condition assessments, is the use of ANSI/TIA-222 Rev. I, Annex J acceptable as the condition-assessment methodology in addition to the OEM data?

Government Response: The application of ANSI/TIA-222 Rev. I, Annex J is an approved methodology for conducting tower condition assessments. Contractor evaluations and subsequent restoration efforts must verify that the structure is returned to a like-new operational state.

53.Question: Please confirm the structure class (e.g., Class III per ANSI/TIA-222 Rev. I).

Should the design wind speed be based on local jurisdictional requirements, or does the Government have a specified design wind speed (noting the PWS identifies certain remote/mountainous sites with excessive wind and ice loading)? For the tower structural evaluations, the PWS references OEM data and ASTM A-780 (coatings) but does not name a structural design standard. Please confirm the governing tower design/analysis standard to be used (e.g., ANSI/TIA-222 Rev. I).

Government Response: Evaluation and restoration should ensure the tower is restored to like-new condition. Towers were designed to EIA 222-D with a wind speed of 134 mph.

54.Question: Given the PWS emphasis on restoring towers to "like new / original operational condition," please confirm that structural analyses are to be based on the as-built/original configuration obtained during field inspection, and that any Government-directed loading additions or configuration changes would be handled separately under CLIN 0003.

55.Question: The PWS requires inspection of the tower and associated hardware (waveguides, supports, ladders, conduits, circuits, lightning arrest system, fasteners). Will the Government provide existing antenna/appurtenance loading data for the structures, or is the Contractor responsible for field-deriving the existing loading during inspection?

Government Response: Evaluation and restoration should ensure the tower is restored to like-new condition. The contractor may field derive loading as necessary if required by a task order.

56.Question: To perform the structural analysis and evaluate the tower under its actual in-service loading, we require the dimensional and weight data for the radar dome (radome) and the equipment installed on the tower. Will the Government provide this information — including the radome dimensions/projected area and weight, and the dimensions and weights of the antenna/pedestal and other mounted equipment — or is the Contractor responsible for obtaining this data during the field inspection? If the Government can provide it, please advise whether it is included in the OEM Valmont-Microflect data or radar system documentation to be furnished after award.

Government Response: The Government is not requiring a structural analysis as described in this question, at this time. If ever required, the Government would issue a task order as per the PWS section 5.3.

57.Question: For over-stress conditions identified during structural evaluation, please confirm how tower modification designs are handled and priced — under CLIN 0002 (repair/replacement), CLIN 0003 (engineering data/ECP), or a combination — and how such modifications are authorized.

Government Response: The Government would issue a task order as per the PWS section 5.3.

58.Question: The PWS states the Government has unique as-built drawings, BOMs, and installation drawings for each tower (provided after award). Do these available data sets include site-specific foundation/anchor-bolt drawings and geotechnical/soils investigation data necessary to evaluate the tower foundations?

Government Response: Yes, site specific information can be provided on an as needed basis.

59.Question: For CLIN 0003 engineering data and ECPs, does the Government require a specific structural analysis software (e.g., tnxTower/RISA) or a specific data/report format for interoperability with Government records?

Government Response: No.

60.Question: The PWS states the Government has a complete tower kit in storage for catastrophic replacement and may furnish components for urgent CLIN 0002 work, to be replenished within 120 days. Please clarify the storage location(s) for GFM, responsibility for transportation of GFM to site, and the basis for pricing GFM replenishment.

Government Response: GFM is stored at the National Logistics Support Center (NLSC), 14200 Merritt Road, Grandview, MO 64030.

When GFM is required, the Awardee is responsible for transportation of GFM to the site.

The awardee is to price the GFM replenishment task as any other task order requirement to include labor, travel, material, other direct costs, etc.

61.Question: Attachment 6 provides Davis-Bacon Wage Determinations by site and notes they "will be required as necessary depending on the scope of work defined at the task order level." Please confirm that task orders limited to CLIN 0001 inspection and engineering evaluation (with no construction/repair labor) are not subject to Davis-Bacon, and that Davis-Bacon attaches only when CLIN 0002 construction work is included. Additionally, the wage determinations for the Japan and Korea sites are listed as "N/A" — please advise what labor standard/wage basis applies at those OCONUS locations.

Government Response: Task orders with no construction will not require Davis-Bacon Wage Determinations. All applicable wage labor standards will be identified at the request for proposal for each task order; including Japan and Korea if those sites require maintenance.

62.Question: Attachment 6 notes the most recent WD revision will supersede those listed.

Please confirm that applicable wage determinations will be incorporated at the task-order level and that any WD-driven rate changes will be addressed via the price-adjustment mechanism (52.222-30).

Government Response: Applicable wage determinations will be incorporated at the task order level. Wage determination rate changes will be addressed with RFO 52.222-30.

63.Question: Section I includes 52.228-13 (Alternative Payment Protections) and 52.228-15 (Performance and Payment Bonds – Construction) with blank fields (protection type;

days after award). Please confirm whether bonds/payment protections are required, on what value (per task order or contract maximum), and within how many days of award.

Government Response: Bonds and payment protections are not required at submission of quote for this IDIQ and will be identified at the task order level, if and when they’re needed.

64.Question: Please confirm the CAR 1352.228-70 insurance minimums apply as stated (e.g., $500K general liability), and confirm the $0 Property Damage Liability figure is intentional.

Government Response: This is correct.

65.Question: Do engineering reports have to be signed and sealed by a PE/certified engineering firm?

Government Response: Yes. The Government assumes this question is regarding PWS section 5.3 which would be used to issue a specific engineering task that would define all requirements to include any reports if necessary.

66.Question: Does the FFP example quote of the 3 scenarios attachment example need to be provided in Volume I - Price Quote?

Government Response: The Instructions to Offeror states that the FFP example quote based on the 3 scenarios attachment must be provided with the solicitation. However, that quote is being evaluated under Volume II - Technical Proposal. Per the Contents Requirement section of the Instructions to Offeror:

“The vendor shall provide a technical approach to accomplishing each of the three scenarios identified in the Scenario Attachment. The vendor shall explain in detail how it would accomplish the work. The offeror's submission in response to this attachment will be used by the Government to help inform their confidence rating.”

Additionally, within the Evaluation of the solicitation for Volume II - Technical Proposal, it is stated:

“Technical Proposal confidence rating will be determined based on the vendor’s ability to detail successful strategies for deliverables listed in the PWS for CLIN 0001, 0002, 0003, and their approach to responding to each of the 3 listed scenarios from Attachment Number 4.”