WWYK240015 - RFI RESPONSES.pdf

NDT, structural analysis) and whether a Government structural review/stamp is required.

Govt Response: Contractor is responsible for completing any design elements that the contractor requires to complete construction. These can be handled through the submittal process/shop drawings but will require to be signed and sealed. -LL

15. Provide any available existing CP survey data, as-built details beyond ED-101/ED-102 and the full section 26 42 14.00 for reference Govt Response: What are you looking for? MBT

16. What is the full scope and exact location of the secondary containment seals that require repair?

Govt Response: Secondary containment seals only required where damaged at concrete repair locations, not anticipated. -LL

17. Is this work limited to sealant replacement at the concrete to steel column bases and the steel tank base described in the notes, or are there additional seals/joints in the secondary containment area that must also be repaired.

Govt Response: Sealant replacement is applicable to the steel to concrete interface described in the notes or where concrete repair is required. -LL

18. Provide any additional details, drawings, and material specifications, or performance criteria for the seal repair work Govt Response: Contractor is responsible for completing any design elements that the contractor requires to complete construction. These can be handled through the submittal process/shop drawings but will require to be signed and sealed. -LL

19. Confirm the contractor is fully responsible for the complete removal, characterization/testing (if required), handing, transportation, and proper disposal of all construction waste material currently stored inside the secondary containment.

Govt Response: Confirmed - QAG

20. What is the minimum required containment class per SSPC Guide 6 (or equivalent) for both interior and exterior blasting (class 1, 2, 3, or 4).

Govt Response: Per 09 97 13.16 and 09 97 13.27 class 3 is required. - QAG

21. Is full enclosure with negative pressure / HEPA filtration require for exterior blasting?

Govt Response: NO, see question 20 - QAG

22. If not full enclosure, what are the exact minimum containment standards the Government will accept and enforce?

Govt Response: See question 20 - QAG

23. What air monitoring, dust sampling, and perimeter monitoring requirements apply during blasting operations

(frequency, limits, third party testing, etc?)

Govt Response: Conform to specifications 00 72 00, 09 97 13.6, and 09 97 13.27 - QAG

24. What are the exact requirements for the spent abrasive and paint waste contaminate, collection, testing, and disposal? Shall all debris be collected as hazardous waste?

Govt Response: All blasting debris including used abrasive and paint chips shall be considered hazardous waste

- QAG

25. Will the Government provide or require specific TAFB environmental / safety plans, permits, or pre-approved containment methods that the DOR must incorporate into the design and the contractor must follow?

Govt Response: Reference specification 00 72 00 - QAG

26. Confirm that any blasting/containment plan developed by the Contractor/DOR will be subject to Government review an approval prior to the start of any abrasive blasting and that the Government will not later claim “means and methods” to shift responsibility or cost.

Govt Response: Confirmed, blasting and containment plans will be reviewed for conformance to the specifications - QAG

27. Notes require ACI RAP-1 and RAP-6 repairs. Provide approved material performance criteria or product list the DOR may use.

Govt Response: Submit proposed repair material for approval via a submittal. Base CE/Tepa will review submitted repair methods and materials. -LL

28. Confirm whether a structural engineer review of the repair design is required.

Govt Response: These can be handled through the submittal process/shop drawings. Base CE/Tepa will review submitted repair methods and materials. -LL

29. Confirm performance and material requirement for the replacement grating (loading, profile, attachment) and stair tread nosing so the DOR can specify and detail them.

Govt Response: Refer as-builts provided and field verify. Nosing to meet requirements in drawings. -LL

30. Provide the Government’s required containment, negative air, monitoring, and waste handling standards for SSPC-SP 10 blasting and coating operations on active IWTP site.

Govt Response: See question 20 - QAG

31. Provide any additional operational constraints, required bypass capacity, or plant coordination requirements during tank draining and 14 day outage windows.

Govt Response: The tanks are to be repaired one at a time. The Government will drain the tank to be worked, open the access hatch/manway cover, remove any sludge, perform a general cleaning of the surface (this is not surface prep only a spray wash, detailed cleaning and surface prep is required by the contractor), and shut/lock shut influent/effluent valves. This process can be as fast as 2 weeks or take 8-plus weeks depending on the build-up in the tank and work circumstances across base. Once awarded, the contractor should make immediate contact with the PM to commence discussion on operational shutdown and turnover of the tank. Once the tanks are “turned over” to the contractor, the contractor is responsible for their own LOTO, blanks, pipe plugs, air monitoring, safety, and all other requirements to perform the work.

The plant operators and maintenance will require access to the area for normal inspections and operational requirements associated with the online/operational tank. -AD

32. Provide a complete list of all available as builts, surveys, Geotech data, lead/hazardous coating surveys, and existing CP data.

Govt Response: All applicable data is available through CO/CS -LL

33. Confirm the Government’s review/approval timeline for interim and final design submittals per 01 33 16.00 (number of review cycles, calendar days per review, etc.)

Govt Response: Any post award submittal review and approval timelines will be in accordance with TAFB specifications - QAG

34. Confirm the requirements for third party NACE CIP level 2+ inspector, 100% holiday testing (NACE SP0188), FDT verification, and adhesion testing during construction

35. Govt Response: This is not a requirement listed anywhere in the solicitation documents that I know of and is therefore not required - QAG

36. Has lead-based paint / hazardous coating survey been performed on the tanks?

Govt Response: A survey has been carried out on accessible areas and no concerning materials were identified according to CE environmental - QAG

37. If lead or other hazardous material are present, will the Government provide the full survey report and require full abatement?

Govt Response: See question 36 - QAG

38. If abatement is required, is it included in our scope or will the Government perform it prior to our mobilization?

Govt Response: See question 36 - QAG

39. Tank interior blasting, cleaning, inspection, coating, and steel work constitutes permit-required confined space entry.

• Please provide the Government’s specific requirements for:

• Confined space program, atmospheric monitoring protocol, and rescue plan that the

Contractor/DOR must follow

• Any TAFB specific confined space entry permits, standby rescue team obligations, or coordination with the Base Fire Department

• Confirmation whether the Government will provide or assist with rescue services during the 14 day outage window Govt Response: It’s the contractor’s responsibility to have a rescue plan. MBT

40. Please provide the exact acceptable environmental conditions (substrate temperature, ambient temperature, relative humidity, dew point differential) that the DOR must incorporate into the design and the Contractor must maintain during application and cure.

Govt Response: Conform to 09 97 13.16 and exact recommendations of the coating manufacturer - QAG

41. For SSPC-SP 10 blasting (interior and exterior) please confirm:

• Acceptable abrasive media type(s)

• Requirements for collection, testing, disposal of spent abrasive + removed coating debris

• Is hazardous material testing required?

• Whether this waste falls under 00 72 00 Hazardous Waste Management Procedures

Govt Response: Reference 09 97 13.16 and 09 97 13.27 for approved abrasive, reference 00 72 00 for all other items - QAG

42. Please provide the warranty period and performance criteria for interior AWWA D102-21 ICS 2 coating system Govt Response: -A 3-year warranty period for any repairs/defects on the work and coating, and a minimum 5-year warranty period from the manufacturer - QAG

43. Please provide the warranty period and performance criteria for the exterior coating system Govt Response: A 3-year warranty period for any repairs/defects on the work and coating, and a minimum 5-year warranty period from the manufacturer - QAG

44. Please provide the warranty period and performance criteria for the new/repaired cathodic protection system.

Govt Response: The cathodic protection system will have a one-year warranty upon the completion of all CP work, including changes required to correct deficiencies identified during initial testing, and preliminary acceptance of the CP system by the Contracting Officer or the Contracting Officer's Representative. MBT

45. What is the maximum allowable outage duration per tank that the Government will accept for the complete scope of work (drain, clean, inspect, abrasive blast to SSPC-SP 10 interior and exterior, steel repairs/plate welding, concrete repairs, interior coating, cathodic protection installation, exterior coating, grating/nosing replacement, and return to service?)

Govt Response: The government anticipates the work requiring approximately 2-4 months per tank; however, timeline is driven in part by the contractors’ capabilities, work required, and schedule. The government expects the contractor to perform the work in a timely manner and not let the tank sit fallow without work occurring for a long period of time. Although unlikely, at any time an emergency, operational, or mission requirements necessitate, the government reserves the right to take positive control of the tank and place it back in service - QAG

46. Will the Government require the Contractor to submit a detailed outage plan Govt Response: Yes - QAG

47. Please confirm the Government will provide any temporary treatment capacity, bypass pumping, or other operational support during the tank outage?

Govt Response: The government will be responsible for these operations - QAG

COR CONCURRENCE -FINAL

Paul Richenburg

Question #

Quinlan

5 Quinlan

6 Marcus

7 Marcus

Quinlan

Marcus

Lance

Lance Quinlan

Lance Quinlan Marcus

Quinlan

Quinlan

Lance

Comments / Questions - FA813726R0020 / WWYK240015 Rehab Tanks 62501E & 62501W - Tinker AFB, OK

File (optional) Question Submitted Date

SOW 1.1; Environmental

Please confirm whether hazardous materials (e.g., lead-based coatings, contaminated sludge, or other regulated materials) are anticipated within the tanks or containment areas, and whether abatement/disposal is to be included in the base scope. No known LBP or Asbestos concerns of findings from analysis. Contractors who perform the work however should be notified of potential LBP presence on inaccessible areas. -DBS

4/28/2026

Please provide the complete specification package referenced by the drawings and SOW, including but not limited to Sections 00 70 00, 00 71 00, 00 72 00, 01 32 16.00 20, 01 33 00, 01 45 00.00 10, 03 30 00, 07 92 00, 09 97 13.16, 09 97 13.27, and 26 42 15. If these sections will not be issued, please identify the governing requirements for each scope item.

-Contact your CO/CS for a copy of all base specs and Tinker Standards. -DBS

4/28/2026 Please confirm who is responsible for draining each tank, removing residual sludge/liquid, cleaning the tank to allow safe entry, and disposing of all liquids/sludge generated before coating work. If contractor responsibility, please provide estimated quantities, waste characterization, approved disposal location, and any required manifests or analytical testing - The government will be responsible for these operations and will require 14 days notice - QAG 4/28/2026 Please provide the type, approximate quantity, location, and waste classification of the construction waste currently stored in the secondary containment. Confirm whether it is non-hazardous construction debris or requires special handling, testing, transport, or disposal. Approxiametly 400lbs of non-hazadrous debris ( wood, wire, broken concrete, sand/dirt, insulation and nails/screws). - QAG

4/28/2026

SOW 1.1; Mechanical Scope Please confirm the required coating system (manufacturer/specification), surface preparation standard (e.g., SSPC/NACE), and required inspection/testing criteria for interior tank coatings. - See S-100 and M-101 - QAG 4/28/2026

Mechanical Please confirm whether temporary bypass systems or operational continuity measures are required to maintain facility - The Government will be responsible for these operations - QAG

4/28/2026

E-101/E-102/E-103 Please confirm whether all electrical work is limited to platform systems and cathodic protection, or if additional facility tie ins, upgrades, or panel modifications are required. Yes the electrical work is tied to the plate form and and the CP system. 4/28/2026

Submittal Register (01 33 00;

01 45 00)

Please confirm whether long-lead material procurement may proceed at risk prior to full submittal approval to maintain the 310-day schedule. - At risk to the Contractor, yes. KTR must send email to CO/CS/PM/QA Inspector indicating as such prior to procurement. -DBS

4/28/2026

SOW 1.1; Mechanical Scope Please confirm whether additional investigation reports, inspection records, or prior repair history for Tanks 62501E and 62501W are available to bidders. - Contact the CO/CS for copies of the most recent tank inspection reports. -DBS 4/28/2026

SF 1442 Items 12, 13;

Contract Documents

Please confirm the following for proposal preparation:

a. Whether a bid guarantee (bid bond) will be required in the final solicitation, including percentage and acceptable forms.

b. Confirmation of Performance and Payment Bond requirements, including required percentages and timing of submission after award.

c. Whether liquidated damages will apply, and if so, provide the daily rate and identify whether damages are tied to substantial completion, final completion, or both.

d. Anticipated timeline for issuance of the final solicitation (if revisions are pending) and confirmation that the current proposal due date remains unchanged.

-Contact the CO/CS for all financial and solicitation related inquiries. -DBS

4/28/2026 Please clarify whether equivalent coating products/manufacturers are permitted for interior and exterior tank coating systems. Drawing G-101 allows equal products, while S-100 states alternate interior systems or products will not be considered. Confirm the governing requirement.” Products greater to or equal can be submitted for approval. - QAG

4/28/2026

“Please provide the complete specification package referenced by the drawings and SOW, including but not limited to Sections 00 70 00, 00 71 00, 00 72 00, 01 32 16.00 20, 01 33 00, 01 45 00.00 10, 03 30 00, 07 92 00, 09 97 13.16, 09 97 13.27, and 26 42 15. If these sections will not be issued, please identify the governing requirements for each scope item."

-Contact the CO/CS for copies of all base specs and Tinker Standards. -DBS 4/28/2026 Please provide the cathodic protection design criteria for each tank, including tank dimensions/capacity, water chemistry assumptions, design life, current density, number/location of anodes and reference electrodes, rectifier sizing, acceptance test criteria, commissioning requirements, and whether a NACE/AMPP-certified CP specialist is required.” The tanks are an internal ring system 120/240 40-volts - 40 amps as per NACE/AMPP standards. MBT 4/28/2026 Please confirm whether the contractor is required to perform ultrasonic thickness testing of the tank shell/base. Provide required test locations, acceptance criteria, estimated repair quantities, weld details, plate material, surface preparation, inspection/NDE requirements, and whether repair quantities beyond the indicated locations will be handled by modification.” No testing is required, refer tank inspection report for shell thickness. Anticpated areas are shown. A36 steel plate with 3/16 fillet weld all around. Weld plate after paint prep but before painting. Refer specs for welding 05 05 23.16. Anything beyond what the inspection report shows would require a mod. -LL

4/28/2026 Please confirm the existing water stop condition and whether water stop repair/replacement is included. If the water stop is found damaged, deteriorated, or leaking during joint repair, please provide repair details and confirm whether this will be handled by modification. Condition of waterstop cannot be determined from visual observations. Damaged waterstops would be unforseen and require a mod. -LL

4/28/2026

Please identify all equipment to be removed/protected, including pumps, mixers, crane components, controls, and government-stored equipment.

Confirm who is responsible for disconnecting, removing, storing, reinstalling, aligning, testing, and recommissioning each item. Each Tank has two cranes on the platform above and a submersible pump and mixer in the tank below. The contractor is responsible for disconnecting, removing, storing, reinstalling, aligning, testing, and recommissioning of each item. - QAG

4/28/2026

Please confirm whether the operating tank must remain fully functional 24/7 during each phase, including during electrical tie-ins, coating containment setup, access/staging, and cathodic protection installation. Identify any blackout dates, process-flow restrictions, or maximum allowable downtime. -Refer to SOW para 2.3.2 -DBS

4/28/2026

Please confirm the confined space classification for tanks 62501E and 62501W and provide any known atmospheric hazards, previous entry permits, rescue requirements, ventilation requirements, and whether base fire/rescue support is available or contractor-provided rescue is required. It's the contractor's responsibility to have a rescue plan. MBT 4/28/2026 Please provide existing platform grating profile, material, span, loading requirements, attachment details, and required material for replacement grating and stair nosings. Confirm whether stainless, FRP, galvanized, aluminum, or another non-corrosive material is required.” Refer as-builts provided and field verify. -LL

4/28/2026

Marcus

Marcus

Marcus

Proposal Requirements (Section L/M – Not Explicit)

Given that subcontractor and supplier pricing is often provided immediately prior to proposal submission to reflect current market conditions, please confirm whether detailed subcontractor/vendor quotes are required to be included within the proposal submission, or if they may be retained by the Offeror and provided to the Government upon request for verification. -Contact the CO/CS -DBS 4/28/2026

Site Visit Sign-In Sheet;

Solicitation Instructions (Not Explicit)

MBT

4/28/2026

E-101; UFGS 26 42 15 –

Cathodic Protection (Rectifier)

Rectifier - Do they have a rectifier manufacturer preference?

The contract drawings (Sheet E-101) identify an “automatically controlled TASC rectifier” as part of the impressed current cathodic protection system. However, the contract documents do not provide sufficient detail regarding the rectifier requirements for procurement and installation.

Please clarify the following:

1. Required rectifier type/technology (e.g., SCR, switch-mode, or other) See question #13 MBT

2. Required input power characteristics (voltage, phase, frequency) 120/240 60hz single phase MBT

3. Required output capacity/rating (voltage and current range) 40-volts 40-amp MBT

4. Required control mode (constant current, constant potential, or both) do not need MBT

5. Required enclosure rating (e.g., NEMA 4X, outdoor rated, etc.) Yes required junction box rating MBT

6. Any approved manufacturers or basis-of-design J.A electronics MBT

7. Any monitoring/SCADA integration requirements None MBT

8. Confirmation that selection is contractor-designed in accordance with UFGS 26 42 15 As per UFGS MBT

4/30/2026

E-101; UFGS 26 42 15 –

Cathodic Protection (Anode Bed Location)

The contract documents require installation of a new impressed current cathodic protection (ICCP) system, including anode assemblies (Ref:

Drawing E-101 and UFGS 26 42 15). However, the documents do not clearly indicate the physical location or configuration of the anode bed (distributive bed) relative to the existing concrete containment/retaining structure.

Please clarify the following:

1. Anode Bed Location Are the anodes to be installed within the existing concrete containment/retaining structure, or located remotely (outside the basin)?

2. Concrete Modifications If installation is intended within the containment area, is the Contractorpermitted to core, trench, or otherwise cut/penetrate existing concrete slabs or retaining walls to install the anode system?

If permitted, provide:

-Limits of modification -Required restoration/repair criteria -Any structural constraints or approval requirements

3. Design Responsibility Confirm whether the final anode bed layout and installation method is to be contractor-designed in accordance with UFGS 26 42 15, or if additional design direction/details will be provided by the Government. Structural capacity should not be reduced without supporting drawings and calculations. -LL

E-101; UFGS 26 42 15 –

Anode Cable Routing

The contract documents require installation of a new impressed current cathodic protection (ICCP) system, including anode assemblies and associated cabling (Ref: Drawing E-101 and UFGS 26 42 15). However, the documents do not clearly define the routing method for anode lead cables at the anode locations.

Please clarify the following:

1. Cable Routing Method At the anode locations, are anode lead cables required to be:

-Installed in rigid conduit routed directly to the tank, or -Routed along/attached to the concrete retaining wall, or -Another method (please specify)?

2. Conduit Requirements Confirm required conduit type (e.g., rigid steel, PVC-coated rigid, HDPE, etc.) for exposed and/or buried portions. Identify any corrosion protection or coating requirements for conduit in this environment.

3. Attachment / Installation Requirements If routed along the retaining wall, confirm:

-Acceptable attachment methods (anchors, supports, spacing) -Whether penetrations into the wall are permitted

4. Protection & Routing Constraints Confirm minimum cover, protection, or segregation requirements for anode cables. Identify any restrictions on routing within the containment area.

5. Design Responsibility Confirm whether final cable routing is contractor-designed in accordance with UFGS 26 42 15, or if additional design direction will be provided. FOLLOW THE EXISTING CONDUIT ROUTING AND ALL THE CONDUIT TYPE AS THE OLD. MBT.

Marcus

Marcus

Marcus

Lance

Lance

Lance

Lance

Lance

Marcus Lance Quinlan

Lance

Drawing E-101 and UFGS 26 42

Has the Tinker AFB corrosion tech have an anode layout in mind for the Distributive bed? And locations of junction boxes and rectifiers?

The contract documents require installation of a new impressed current cathodic protection (ICCP) system (Ref: Drawing E 101 and UFGS 26 42 15), but do not provide a defined layout for the distributive anode bed, junction boxes, or rectifier locations.

Please clarify the following:

1. Anode Bed Layout Did Tinker AFB corrosion personnel or the design team develop a conceptual or preferred layout for the distributive anode bed?

If so, please provide any available sketches, criteria, or design guidance indicating intended anode placement.

2. Junction Box Locations Are there preferred or required locations for junction boxes associated with the ICCP system?

Should junction boxes be located within the containment area, on the retaining wall, or remote from the tanks?

3. Rectifier Location Confirm the intended location of the rectifier(s) relative to the tanks (e.g., mounted at tank, on structure, remote pad, etc.).

Identify any access, clearance, or mounting requirements.

4. Design Responsibility Confirm whether the complete ICCP system layout (anodes, cabling, junction boxes, rectifier location) is to be contractor-designed in accordance with UFGS 26 42 15, or if additional design direction/details will be provided by the Government. Because it's an internal system and there is no anode bed, just a ring. MBT

As-Builts / Field Conditions – Existing CP System

There is an existing CP system to the West of the tanks. What structures does that system protect? Is there a concern with potential interference.

Field observations and as-built information indicate the presence of an existing cathodic protection (CP) system located to the west of the subject tanks. The contract documents do not identify the extent or function of this existing system.

Please clarify the following:

1. Extent of Protection What structures and/or utilities are protected by the existing CP system located west of the tanks? Is the existing system connected to or influencing Tanks 62501E and 62501W?

2. System Status Will the existing CP system remain in service, be modified, or be decommissioned as part of this project?

3. Interference Considerations Has potential electrical interference between the existing CP system and the new ICCP system been evaluated? Are there required mitigation measures (e.g., bonding, isolation, test stations, coordination studies)?

4. Testing & Coordination Requirements Are pre-installation and/or post-installation interference testing or coordination with base corrosion personnelrequired?

5. Design Responsibility Confirm whether evaluation and mitigation of CP system interference is contractor responsibility as part of the ICCP system design, or if guidance will be provided by the Government.

This project is internal only MBT

The contract documents require the Contractor to provide a complete and functional system; however, the level of design completeness is not clearly defined.

Please confirm whether the provided drawings and specifications represent a fully complete design for construction, or if the Contractor is responsible for completing the design of systems including, but not limited to, cathodic protection, coatings, structural repairs, and associated components. Contractor is responsible for completing any design elements that the contractor requires to complete construction. These can be handled through the submittal process/shop drawings but will require to be signed and sealed. -LL

If the Contractor is responsible for design, please identify required design deliverables, including design phase requirements (e.g., 30/60/90/100%), calculations, shop drawings, and any required professional engineer (PE) stamping. -100% Design items can be handled through the submittal process/shop drawings but will require to be signed and sealed. -LL Please confirm the governing design standards and criteria the Contractor is required to use for completion of any design elements not fully defined in the contract documents. Standards are provided.-LL Please confirm whether Contractor-developed design elements will require Government review and approval prior to construction, and whether such approval constitutes acceptance of design responsibility or if design liability remains solely with the Contractor. Contractor provided Design elements must be approved prior to construction. Responsibility will be on the contractor. -

LL

Please identify all systems or components where the Contractor is expected to provide design, including but not limited to cathodic protection systems, coating systems, structural repairs, and installation details not fully defined in the contract documents. Contractor is responsible for completing any design elements that the contractor requires to complete construction. These can be handled through the submittal process/shop drawings but will require to be signed and sealed. -LL

Section L requires submission of in-house design calculations and supporting technical documentation.

Please confirm the required level of detail for design calculations, including whether calculations must be sufficient for construction or are intended for conceptual/validation purposes only. Any contractor design submitted should be sufficient for construction and signed/sealed.

-LL

Please confirm whether any Contractor-developed design elements (including calculations, drawings, or system layouts) are required to be prepared and/or stamped by a licensed Professional Engineer. -Refer to SOW para 3.5 -DBS Please clarify the distinction between required “in-house design calculations” and standard shop drawings/submittals, and confirm whether these design efforts constitute delegated design responsibility under the contract. Any design elements provided by the contractor can be handled by the submittal process/shop drawings. These would be contractors responsibility. -LL

Please confirm whether manufacturer-provided calculations and system designs (e.g., cathodic protection, coatings systems) are acceptable in lieu of Contractor-developed design calculations where applicable. Yes the manufacturer provided calculations and system design. MBT

Please confirm the expected level of detail for supplemental drawings/sketches included in the proposal, and whether these drawings are intended to represent construction-ready design or conceptual approach only. Any contractor design submitted should be sufficient for construction and signed/sealed. -LL

PAUL RICHENBURG, COR