Vendor_questions_0003.docx

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1. Can you provide the basis of design model for the floating decanter?

1. Response: The basis of design model is Fluidyne’s floating decanter, which is a fully hydraulic design that floats up and down with changing water levels and can remove liquid levels down to a few feet above the lagoon cell floor. It should be made of corrosion- and abrasion-resistant material with 180 degrees of travel.

2. Would you consider a two (2) day bid date extension from May 28th, 2025, to May 30th, 2025 due to it being a holiday earlier in the week.

2. Response: YES: June 4nd NOON PD.

3. I am trying to get the 8” basket strainer from Titan simplex and they cannot meet AIS domestic specifications, I wanted to double check if this job is required to meet ais spec? It is mentioned in the quality assurance spec section for 26 05 33 – 1 and 40 05 00 – 1. I figured it was worth asking as I will have to provide an alternative valve/no bid the basket strainer if need be.

3. Response: YES, given that both the FAR and the contract reference American Iron and Steel (AIS) standards under the quality assurance specification sections, and given that the basket strainer is integral to the system’s functionality, it is subject to AIS requirements. If Titan is unable to meet the AIS requirement for the Simplex Basket Strainer Model BS 55-CI, please provide an alternative product that meets the salient characteristics and complies with AIS standards.

4. Section L CPARS: “If Contract Performance Assessment Reporting System (www.cpars.gov) evaluation reports exist for projects submitted under Project Experience” This will exceed page limits.

4. Response: Strike this from Section L.

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

5. Response: NO, one individual can serve multiple roles or functions so long as they are qualified for the roles and available to perform the roles when needed.

6. Are there any phasing requirements?

6. Response: NO, the Contractor is allowed to phase the project as desired so long as the standard wastewater collection, treatment, and disposal functions are all met when needed. See information from earlier Vender Q&A and Clarifications for details on typical wastewater flows, seasonal variations, and sprayfield operations.

7. Will any adjacent National Park Service (NPS) facilities or operations remain active during construction? If so:

· Are there specific restrictions on contractor access, working hours, or construction activity near occupied areas?

· Will the contractor be required to coordinate daily access, deliveries, or staging with NPS staff?

· Are there any anticipated public interface concerns or security protocols that must be followed due to proximity to active park operations?

7. Response: All adjacent NPS facilities and operations within the Kalaloch developed area will remain active and open, in accordance with standard operating seasons and hours, during construction. The lagoons and sprayfield are not located near occupied areas. The Contractor will be issued a gate key for the lagoon access road and will be responsible for coordinating their own daily access, deliveries, or staging. Any deliveries or staging that require sustained use of the Kalaloch Ranger Station parking lot, such as the transfer of a precast concrete building from a semitruck to a truck-and-trailer setup, shall be coordinated with the Contracting Officer and Olympic National Park to minimize visitor impacts. The project area itself is not open to the public.

8. Please confirm whether there are any requirements for temporary heating or cooling within the prefabricated building or other enclosed work areas during construction. If so:

· Are there minimum temperature requirements for interior work (e.g., coating, equipment installation, testing)?

· Will temporary HVAC equipment need to be provided by the contractor?

8. Response: NO, there are no contract requirements for temporary heating or cooling within any enclosed area during construction. If there are specific products that specify minimum temperature requirements for application, Contractor shall be responsible for ensuring manufacturer’s recommended temperature settings are met for proper installation.

9. 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?

9. Response: YES, Contractor shall submit to the Contracting Officer a written document from the supplier stating the delay.

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

10. Response: NO, there are no soil boring reports for the lagoons or sprayfield. Well logs from two wells drilled approximately 1500 feet north of the lagoons indicate clay soils. The lagoons appear to be unlined and rely on native clay soils to provide a low-permeability seal.

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

11. Response: The Government is contracting directly for a hazardous materials survey, which is expected to occur in July 2025. No hazardous materials are anticipated. If hazardous materials are found, the Government may issue a Request for Proposal to modify the scope, in accordance with specification section 01 26 01 Contract Modification Procedures.

12. Should building controls be included as part of this project scope? If so:

· Is there a specific controls system or manufacturer referenced in the specifications?

· Will the Government be furnishing a controls contractor, or should the General Contractor provide one?

· If a controls contractor is to be provided, please furnish their contact information for coordination.

12. Response: NO, a dedicated building control system beyond the electrical and mechanical equipment control systems indicated on drawing sheet C1.10 and in the specifications is not required as part of the project scope.

13. Should fire alarm work be included as part of this project scope? If so:

· Is there a specific fire alarm system or manufacturer referenced in the specifications?

· Will the Government be furnishing a fire alarm contractor, or should the General Contractor provide one?

· If a fire alarm contractor is to be provided, please furnish their contact information for coordination.

13. Response: NO, a fire alarm is not required as part of the project scope.

14. Please provide photos of the job site and existing conditions.

14. Response: Photos of the job site and existing conditions are included throughout the construction drawings. Photos from inside the existing pump house (to be demolished) are shown below and include the existing aerator controllers, existing distribution pump, and existing aerator panel with H-frame and safety disconnect switches (to be retained for reuse, per G1.3 Demolition Footnotes 7).

15. Is this project tax exempt?

15. Response: YES, if there is a pass-through tax, please make sure it is part of the pricing you provide.

16. 01 31 00, 1.4.A: Please confirm whether all items listed in Section 1.4.A (e.g., Accident Prevention Plan, UPPP, Waste Management Plan, Subcontractor Statements) must be fully approved or just submitted before the Preconstruction Conference.

16. Response: The Contracting officer will request at the PRECON meeting for the documents if not received yet. Approvals do not have to happen prior to PRECON.

17. 01 31 00, 1.8.A.1: Can you confirm whether the on-site Environmental Manager must be a full-time dedicated role, or if this responsibility can be assigned to an individual with multiple duties on-site?

17. Response: NO, the on-site Environmental Manager responsibility can be assigned to an individual who is qualified for the role but who also has other on-site duties.

18. 01 50 00, 1.3 & 3.2.A: Will the National Park Service assist in obtaining approval for temporary utility connections, or is the contractor fully responsible for all permitting and coordination with local authorities?

18. Response: NO, the Contractor is fully responsible for all permitting and coordination associated with temporary utility connections.

19. 01 50 00, 3.2.C: Is there a preferred method for water access from the NPS hydrants at Kalaloch Maintenance area, and is there a designated Park-approved backflow prevention device the contractor must provide?

19. Response: Contractor shall coordinate with NPS on identifying and selecting the best hydrant for meeting Contractor water needs while minimizing impacts to NPS operations or visitors. The backflow prevention assembly should provide adequate protection for the risk level, typically a reduced pressure assembly. Contractor shall provide documentation of recent (within the past 12 months) successful testing and certification from a licensed backflow assembly tester before use will be authorized.

20. 01 50 00, 2.2.A: Are mobile office trailers acceptable if they do not meet full insulation and temperature control standards, or must they comply with permanent-type enclosure standards?

20. Response: Temporary field offices are not required to comply with permanent-type enclosure standards.

21. 01 31 00, 1.8.C: Does NPS provide a standard environmental training template, or must the contractor develop it independently? When are training logs required to be submitted?

21. Response: NO, the NPS does not have a standard environmental training template. The purpose of the training is to ensure that onsite personnel are able to respond effectively to environmental emergencies by familiarizing them with emergency procedures, equipment, etc. Employee training records are required to be submitted when requested by the Contracting Officer.

22. 01 31 00, 1.4.B: Please confirm what information, if any, the Government is responsible for providing to complete applicable construction permits.

22. Response: The Government does not anticipate any required construction permits for this project. If the Contractor identifies required construction permits, this information should be submitted in accordance with 01 31 00, 1.4 A. 11. and the Government will work collaboratively to complete the permit application.

23. 01 31 00, 1.7.B: Is the contractor responsible for preparing and distributing progress meeting minutes even if meetings are initiated by the CO?

23. Response: If initiated by the CO, no. The CO will take their notes.

24. 01 35 05, 3.1.A: Confirm whether any exceptions to the restriction on work between two hours after sunrise and two hours before sunset (April 1–Sept 23) will be considered for quiet, non-disruptive work.

24. Response: As stated in this specification section, the restriction applies to work activities that produce above-ambient noise such as operation of heavy equipment or machinery, generators, etc. The restriction does not apply to typical maintenance activities such as operation of vehicles, work completed using hand tools, activities inside (and therefore muffled by) a building, etc.

25. 01 35 05, 3.1.E : Can the Government provide guidance or a list of approved suppliers for bear-resistant dumpsters and receptacles?

25. Response: Olympic National Park does not have a list of approved suppliers for bear-resistant dumpsters and receptacles. Receptacles should be tightly covered to prevent wildlife access to trash, debris, and/or food sources.

26. 01 35 05, 3.1.F: Are there pre-approved anchoring systems or required specifications to meet the 70 mph wind requirement for portable restrooms?

26. Response: NO, however it may be possible to locate portable restrooms adjacent and/or secured to the perimeter fence.

27. 01 35 05, 3.2.B: What is the process and lead time for approval of contractor-proposed access routes and matting plans in coordination with park staff?

27. Response: As noted on drawing sheet G1.4, Notes 5., Contractor shall submit a traffic control plan and haul route plan to the CO at least 15 days prior to hauling materials. In particular, Contractor shall verify that the lagoon access road is acceptable for the Contractor’s selected method to deliver and place the precast concrete building. Park staff will provide consultation on proposed access routes and identify if any resource protection measures may be required within 10 days.

28. 01 35 05, 3.2.C: Please confirm which permits are anticipated (e.g., environmental, noise, waste), and whether any have been obtained by the Government.

28. Response: The Government does not anticipate any permits and has not obtained any permits given the scope of the project.

29. 01 35 05, 3.2.D: Is there a preferred format or example provided by the Government for the Stormwater Pollution Prevention Plan (SWPPP)?

29. Response: YES, there is a link provided in Part 1.1 B. of this specification section to an NPS-approved Under-an-Acre Pollution Prevention Plan (UPPP) template that may be used. The template is also available at the following: https://www.nps.gov/dscw/upload/UnderAnAcrePollutionPreventionPlan-UPPP-6-24-24-508.docx

30. 01 35 05, 3.2.E : Are daily environmental inspections required in addition to shift-start equipment checks?

30. Response: NO, in general daily environmental inspections are not required. However, other inspections, such as inspection of erosion control or other pollution control measures and best management practices, may be required based on the project phase and environmental conditions.

31. 01 35 05, 1.3.A and 3.2.G: Will the Government require weed-free certification for each delivery of imported fill or just certification from the source provider?

31. Response: The Government will require that the commercial source pit of imported material be certified as weed seed free prior to that material entering the project site. Pit inspections for weed-free certification must have been completed within the previous 12 months to be considered current.

32. 01 35 13.22, 1.1.A: Can the Government confirm if the two-week notification requirement before ground-disturbing activity applies to each phase of excavation or just the initial mobilization?

32. Response: The minimum two-week notification requirement applies to any trenching or excavation activities to help ensure that an archaeologist can be available for monitoring. Providing an entire project schedule up-front and prior to mobilization showing target dates of excavation is helpful.

33. 01 35 13.22, 3.3.A: If archaeological resources are discovered and work must be relocated, will the NPS provide a list of pre-approved non-sensitive areas to continue construction, or must the contractor propose alternate areas for review?

32. Response: As noted in this specification section, no archaeologically sensitive areas have been identified within the proposed project area. If archeological resources are discovered, work in that location shall stop, and the Contractor will be responsible for relocating work to an alternative (non-sensitive) location where monitoring is not normally required.

34. 01 35 13.22, 3.2.A-B: Is the contractor allowed to proceed with work if the archaeological monitor is unexpectedly absent during a scheduled activity, or must work stop until they are present?

34. Response: The ability to proceed with ground-disturbing activities if the archaeological monitor is absent during a scheduled activity will be at the discretion of the monitor based on their assessment of whether archaeological resources may be discovered. As noted in this specification section, no archaeologically sensitive areas have been identified within the proposed project area.

35. 01 35 13.22, 3.3.B: Please confirm the required protocol and points of contact if an archaeological discovery is made in the absence of the monitor. Is verbal notification sufficient, or must it be documented?

35. Response: If resources are discovered while the archaeological monitor is absent, the Contractor shall stop work immediately and report the discovery to the Contracting Officer. Additionally, the Contractor may report the discovery to the park-based Contracting Officer’s Representative, who can coordinate directly to get an archaeological monitor onsite as soon as possible. Verbal notification is sufficient, but all actions and activities should be documented in Contractor’s Daily Report. Contact information for the Contracting Officer, Contracting Officer’s Representative, and other key park staff will be clearly provided during the PreConstruction meeting.

36. 01 35 13.22, 3.4.A: To comply with the requirement to avoid project-wide work stoppage, will the Government allow early pre-approval of alternate work zones in case one area must pause due to discovery?

36. Response: YES, the Government will allow early pre-approval of alternate work zones in case one area must pause due to discovery.

37. Section 01 50 00, Part 2.2.A references the use of a field office meeting certain specifications. Please confirm the following:

· Is the provision of a contractor field office a mandatory requirement for this project?

· If so, is there a designated location on site approved for trailer or mobile office placement?

· Are there any site-specific restrictions (e.g., access, surface prep, utility tie-ins) that should be considered when placing the field office?

37. Response: NO, provision of a contractor field office is not a mandatory requirement for the project. Drawing sheet G1.4 identifies potential staging areas, which may be used for the staging of materials, equipment, mobile office placement, or anything else that may need to be staged. As stated in Notes 7 of this drawing sheet, additional and/or alternative staging areas shall be reviewed and potentially approved by the Contracting Officer upon request.

38. 01 50 00, 2.2.C: Is there a required spec or manufacturer for toilet units that comply with the 'secured against bears' requirement?

38. Response: NO.

39. 01 31 00, 1.7.A.19: Will the NPS Final Accessibility Inspection include review of field trailers and temporary facilities, or only completed permanent work?

39. Response: The NPS Final Accessibility Inspection applies to completed permanent work to determine compliance with the requirements of the International Building Code (IBC) and Architectural Barriers Act Accessibility Standards (ABAAS), latest available release. Any deficiencies will be identified and added to the punch list for correction. ABAAS construction non-compliance will be replaced at Contractor’s expense unless authorized by the Contracting Officer (CO).

40. 02 01 00, Part 1.2.A: Please confirm if all utilities not designated for removal must be field verified and protected, and if verification should be documented.

40. Response: Existing utilities not designated for removal shall be protected, but not all utilities with the project area must be verified. The purpose for verifying exact locations and depths of the utilities shown is primarily for making connections, e.g. locating the sewage force main for installation of a manual headworks screen, or relocating electrical service to the new building location. Verification of location and depth of any buried utilities encountered on this project should be documented on redline final as-built record drawings, in accordance with specification section 40 05 00, part 3.5.

41. 02 01 00, Part 1.2.B-C: What is the minimum number of exploratory excavations required to satisfy verification of utility alignment and depth?

41. Response: As noted in this specification section, the number of exploratory excavations required shall be that number which is sufficient to determine the alignment and grade of the utility. This may be accomplished with a single exploratory excavation, or it may require multiple excavations.

42. 02 41 00, Part 3.1.A: Can the government confirm all active utilities will be identified prior to the start of demolition?

42. Response: NO. Utilities shown on the drawings reflect information from the 1970 as-constructed drawings, combined with best available knowledge from current utility operators. Contractor shall be responsible for locating and verifying active underground utilities prior to the start of demolition.

43. 02 41 00, Part 1.5.B: Will the Government provide hazardous materials survey prior to mobilization, or should the contractor include allowance for testing?

43. Response: Please see response to Question 11 (above).

44. 02 41 00, Part 3.2.A: Please clarify if the contractor is allowed to stage removed items on site temporarily prior to haul-off.

44. Response: YES, pre-approved staging areas are identified on drawing sheet G1.4 Staging Area Map.

45. 03 30 00, Part 2.4.D: Are batch tickets required to be submitted in real-time with each pour or can they be consolidated in the daily QC report?

45. Response: Batch tickets may be consolidated and submitted with the Daily Report.

46. 03 30 00, Part 2.4.A: Please confirm the required frequency of compressive strength testing for site pours and who is responsible for lab testing.

46. Response: As stated in Part 3.9 A., all testing and inspections are the responsibility of the contractor. Engage a qualified testing agency to perform testing on each concrete mixture. Part 3.9 C. identifies test requirements during construction, including four cylinders for each strength test, and one strength test to be taken each day concrete is placed.

47. 03 30 00, Part 2.4.A.7-8: Is the contractor responsible for field air content and slump testing, or will NPS provide testing services?

47. Response: As stated in Part 3.9 A., all testing and inspections are the responsibility of the contractor.

48. 05 53 13, Part 2.1: Is swage-locked anodized aluminum grating the only acceptable material, or can contractor propose hot-dipped galvanized steel?

48. Response: Hot-dipped galvanized steel is not considered a functionally equivalent substitute for anodized aluminum due to the accelerated corrosion risk from wastewater gases in this salty and humid coastal environment, and higher long-term cost due to maintenance and replacement needs.

49. 05 53 13, Part 1.2.A: Are fabrication shop drawings required for approval prior to production, even for standard bar grating systems?

49. Response: Shop drawings for the metal bar grating on the wastewater headworks platform are considered an action submittal requiring NPS review and approval prior to installation.

50. 07 92 00, Part 1.5.C: Can the Government confirm if perimeter penetrations must be sealed gas-tight as part of NFPA 820 compliance?

50. Response: NO, if the building consists of only one room, and there is no adjacent unclassified room, then NFPA 820's gas-tight requirement for “physical separation” does not apply, because there are no internal separations to be sealed. However, penetrations to the outdoors may still require sealing under other provisions.

51. 07 92 00, Part 2.1: Are substitutions of sealants allowed if not specifically listed, provided they meet ASTM performance criteria?

51. Response: Alternative manufacturers of joint sealants not listed under Part 2.1 may be considered and approved if they meet equivalent quality assurance and performance criteria.

52. Please clarify the specifications for the existing or proposed fencing shown on Sheet C1.2:

What is the intended fence type – chain link, field fence, or another material? If chain link is required:

· Should the mesh be galvanized or black vinyl-coated?

· What is the required wire gauge (diameter)?

· Are existing fence posts to be reused or replaced?

· Is a top rail or tension wire specified at the top and bottom?

· Is barbed wire required at the top?

52. Response: The intended fence type is a galvanized mesh; see photo below. Existing fence posts may be reused. There is no top rail or tension wire required for either top or bottom, and no barbed wire is required at the top. The primary purpose of this fence is to exclude wildlife, particularly elk, to prevent impact or damage to the lagoon cells.

53. 13 34 21 / 13 34 60: Please confirm whether prefabricated building submittals must include structural calcs signed by a licensed PE.

53. Response: YES, in accordance with drawing sheet C1.8, Notes, all design criteria listed is to be confirmed or adjusted by the precast manufacturer and by an engineer licensed in the State of Washington. Specification section 13 34 21 notes in multiple places that calculations and engineer’s stamped drawings shall be produced for both electrical and building plans.

54. 13 34 21 / 13 34 60: Is on-site assembly by the manufacturer’s crew required, or can a qualified contractor assemble the unit?

54. Response: Installation of the pre-fabricated building shall be conducted in accordance with installation instructions from the building manufacturer. Installation of the pre-fabricated docks shall be conducted in accordance with the dock manufacturer’s instructions and recommendations for installation.

55. 13 34 21 / 13 34 60: What are the anchoring requirements for the floating dock system in tidal or surge-prone areas?

55. Response: The floating dock system is not being installed in a tidal or surge-prone area for this project.

56. 22 42 00: Are all pipe materials shown diagrammatically, or are there specific approved materials per pipe type?

56. Response: In general, pipe materials are shown diagrammatically throughout the construction drawings. Specification section 22 42 00 refers to the plumbing fixtures located inside the new pump station mechanical building. For the pressure tank water system, Contractor shall provide a plumbing plan and list of materials starting from the 3/4” stub-out inside the building and include the pressure tank and cutoff switch system, utility sink and frost free outdoor faucet, in accordance with Part 2.1 B. 5.

57. 22 42 00: Is freeze protection required on exposed exterior piping?

57. Response: YES, in accordance with drawing sheet C1.9, General Notes 16. Provide pipe insulation on all pipe exposed to outdoor ambient air in accordance with 40 05 00 – Pipe and Pipe Fittings.

58. 22 42 00: Please confirm if a third-party pressure test is required before final inspection.

58. Response: No third-party pressure test is required for any of the plumbing fixtures identified in specification section 22 42 00. However, specification section 40 05 00, part 3.4 describes pressure and leak testing requirements for pipe and pipe fittings.

59. 23 81 00 / 23 82 00: What are the acceptable equivalent manufacturers for wall-mounted unit heaters?

59. Response: Equivalent manufacturers for wall-mounted unit heaters are those capable of providing the products meeting the salient characteristics described under Part 2 – Products. Basis of design is a Dayton electric wall & ceiling unit heater.

60. 23 81 00 / 23 82 00: Should all penetrations be sealed with intumescent caulk or standard HVAC sealant?

60. Response: In accordance with drawing sheet C1.10, General Notes 2. Building design shall include electrical penetrations, and all penetrations shall be grouted. Therefore, all penetrations through the precast concrete building, including for the exhaust fan, intake louver, and unit heater, must be grouted. Substitution of standard HVAC sealant or intumescent caulk is not acceptable unless specifically approved by the precast building engineer. If you believe an alternative sealing method is more appropriate for a particular condition (e.g., fire-rated assemblies or flexible movement joints), please submit a formal RFI or substitution request with justification and product data for review.

61. 23 81 00 / 23 82 00: Is balancing required for each space or only at the equipment level?

61. Response: Balancing of the exhaust fan, intake louver, and/or unit heater is only required at the equipment level, as they are all located in a single shared space.

62. 26 05 00 to 26 43 13: Can underground conduit be PVC with tracer wire, or is RGS required per spec?

62. Response: Specification section 26 05 33, part 3.3 A. 3. notes that nonmetallic raceway may be used underground for instrumentation cables, while part 3.3 C. 7. calls for direct buried conduits and ductbanks to be PVC-80.

63. 26 05 00 to 26 43 13: Does NPS require arc flash labeling on new panels?

63. Response: YES, arc flash labeling is required on all new electrical panels as per NEC Article 110.16. All work is required to comply with applicable codes and standards.

64. 26 05 00 to 26 43 13: Please confirm who is responsible for coordination with the utility provider for service activation.

64. Response: In accordance with specification section 01 73 40, Part 3.2 A., Contractor is responsible for contacting the utility service provider to coordinate Contractor’s completion of work, testing requirements, and inspections. While the project location is technically within Jefferson County, electrical service is provided by Grays Harbor PUD.

65. 31 10 00 / 31 23 00 / 31 23 33: Are there geotechnical reports available for excavation and backfill reference?

65. Response: NO. Well drilling logs from the Kalaloch Maintenance Area, located 1500 feet north of the lagoons, were included in the response to Question 10 (above).

66. 31 10 00 / 31 23 00 / 31 23 33: Will the government provide a designated spoil area or must the contractor haul off excess material?

66. Response: As required by specification section 31 23 00, part 3.6 A., remove waste materials, including materials not allowed for fill or backfill, trash, and debris, and dispose of legally off Government’s property at Contractor’s expense.

67. 32 91 23: Please confirm if topsoil is to be imported or reused from site stripping.

67. Response: Part 2.1 A. notes to reuse stripped topsoil as practicable, but if topsoil must be imported, details are provided for submitting a 100% small-medium wood chip source for review and acceptance by the COR.

68. 32 91 23: Is hydroseeding required for final stabilization or will broadcast seeding be acceptable?

68. Response: Hydroseeding is not required for final stabilization.

69. 33 31 23 / 33 75 00: Should bypass pumping be continuous during installation or only during flow events?

69. Response: Temporary bypass pumping is only required when needed to accommodate flow events. This may require bypass pumping from the main lift station sewage force main into the primary lagoon cell while installing the manual headworks screen, or it may require bypass pumping from the final lagoon cell to the sprayfield if the pump house is offline and the final lagoon cell reaches capacity. Any pumping from the final lagoon cell to the sprayfield shall include a plan for chlorination and de-chlorination of effluent prior to disposal in the sprayfield.

70. 33 31 23 / 33 75 00: Are chlorine disinfection test reports required for potable water lines?

70. Response: NO, there are no potable water lines associated with this project.

71. 40 05 00 / 40 05 51 / 40 63 43 / 40 63 44 / 40 67 63 / 40 71 00: Is the contractor responsible for PLC programming and SCADA integration?

71. Response: YES, the Contractor is responsible for all PLC programming and HMI system configuration to provide a fully functional and complete system, in accordance with specification sections 40 63 43 and 40 63 44. There is no separate or existing SCADA system onsite that would require additional integration beyond what the Contractor is providing under this scope.

72. 40 05 00 / 40 05 51 / 40 63 43 / 40 63 44 / 40 67 63 / 40 71 00: Please confirm if conduit and wire for instrumentation are to be in Division 26 or 40.

72. Response: Instrumentation and controls are specified under Division 40, while the conduit and wire (raceway and cabling infrastructure) for instrumentation are covered under Division 26. Please coordinate installation between these divisions accordingly. Conduit and wiring shall meet Division 26 requirements, while instrumentation devices, signal requirements, and I/O assignments shall follow Division 40 and construction drawings.

73. 46 20 00 to 46 20 04: Will NPS accept a pre-approved equal for surface aerators listed in the spec?

73. Response: YES, an ‘or equal’ product may be submitted for consideration provided it fully meets all the salient characteristics outlined in the specifications. The proposed equal must be submitted in accordance with the substitution procedures defined in the contract documents, including all required product data and performance verification. Final approval is subject to review by the design engineer and Government to confirm full compliance with the specified performance and functional requirements.

74. 46 20 00 to 46 20 04: Are all tanks and process units to be shop tested prior to shipment?

74. Response: Specification section 46 20 04 refers to related specification section 40 05 00 – Pipe and Pipe Fittings – Basic Requirements. This latter section requires submittal of pressure test results on all piping systems. Chemical storage tank assemblies do not require shop testing prior to shipment.

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