RFI_Responses_FA4877-17-R-A001.pdf

Response to

FA4877-17-R-A001 – RPR/SUST Central Chiller Fac 5101 RFIs

1. Specifications Section 01011 page 6 paragraph 1.6.9 of the Design Requirements calls for a new Monaco Fire Alarm system. Will this project require a MNS as well?

Response to RFI 1: MNS is not required.

2. Specifications Section 01011 page 7 paragraph 1.6.10.4. of the design requirements calls for the new primary connection point to be fed from an existing PME-9. Will this new connection point be in a fused compartment of the existing PME-9?

Response to RFI 2: The connection point is in an unfused compartment.

3. Specifications Section 01011 page 7 paragraph 1.6.10.4. of the design requirements calls for a new PME to be installed outside of the mechanical yard. What type of PME is desired?

Response to RFI 3: Please provide PME-9.

4. Specifications Section 01011 page 7 paragraph 1.6.10.5. of the design requirements call for the 5th street crossing to be bored with a steel sleeve.

a. Will the steel sleeve be a requirement for this project?

b. If the answer to the above question is yes what type and size of steel sleeve?

c. Will the steel sleeve need to be tempered steel?

Response to RFI 4. Steel sleeve is required. Sleeve characters will be determined by the engineer of record.

5. Specifications Section 01011 page 7 paragraph 1.6.10.9. of the design requirements calls for FR-3 dielectric fluid for the transformer. Is this correct?

Response to RFI 5. Mineral oil is also acceptable.

6. Will Lightning protection be required for this project?

Response to RFI 6: LPS is not required.

7. Will Fire Protection be required for this project?

Response to RFI 7: Fire Suppression is not required.

8. Will Lights be required for the mechanical yard other than what’s called out in the DCG?

Response to RFI 8: Lighting is required for the mechanic yard. Provide a minimum of 6 lights.

9. Paragraph 1.6.7.1 on spec page 01011-5 calls out “magnetic bearing centrifugal chillers.” Are other compressors technologies acceptable? For instance, direct drive compressors or screw compressors.

Response to RFI 9: Provide magnetic bearing chillers.

10. Will the buildings being supplied comfort air from the facility 5101 be unoccupied during the construction process of upgrading the central plant?

Response to RFI 10: Buildings will be occupied.

11. Can you supply the current as-built drawings of the water, sewer, electrical, gas and communication utilities surrounding facility 5101?

Response to RFI 11: Site utility plan will be provided.

12. Will any equipment need to be replaced in the associated buildings that the central plant (facility 5105) feeds?

Response to RFI 12: Equipment replacement is limited to the central plant.

13. Instead of installing evaporative coolers in facility 5101, can we install ceiling hung fan coil units?

Response to RFI 13: Ceiling hung fan coil units are acceptable.

14. Will existing direct digital controls need to be updated in the adjacent buildings that are served by central plant or are we to tie into existing?

Response to RFI 14: DDC control work is limited to the central plant.

15. How far from 5101 is the existing PME located that we are to tie the new primary power into?

Response to RFI 15. See attached Utility plan for location

16. Will non normal work hours be allowed to accomplish work that will disrupt the day to day activities at the base?

Response to RFI 16: All construction work shall be accomplished between the hours of 0630—1700, Monday through Friday, unless otherwise approved in writing by the Contracting Officer.

17. “Paragraph 1.6.7.1 on spec page 01011-5 calls out “magnetic bearing centrifugal chillers.” Are other compressor technologies also acceptable? For instance direct drive centrifugal compressors or screw compressors?

Response to RFI 17: See response to RFI 9

18. May we relocate and utilize the existing 13.8KV transformer for temporary power of construction activities?

Response to RFI 18: Means and methods is contractor responsibility. The government cannot verify or confirm that existing transformer is suitable for intended reuse.

19. Section 01010 Para. 1.2 a thru d – Will Government identify what material and equipment will be re-used and or remain as their property, and if any material or equipment is to remain the Government’s property where is it to be delivered to?

Response to RFI 19: Government salvageable items (if any) will be determined during the design phase.

20. Section 01010 Para. 2.5 C – Reference is made to Appendix A, attachments A-1 to A3 of the Environmental Guide. Is Appendix A contained in website referenced by Para. 2.5?

Response to RFI 20: The website and instructions to obtain Appendix A are in paragraph 2.5 of section 01010

21. Section 01010 Para. 2.5 D – Reference is made to obtaining permits from PDEQ. Has it been established by the Government what permits will be required by PDEQ and have any costs be identified?

Response to RFI 21: Contractor will familiarize themselves with the project scope and PDEQ permitting criteria to determine which permits (if any) are required.

22. Section 01010 Para. 2.5 F – Reference is made to soil disturbance. Is there a geotechnical report available for this area, and will a full geotechnical report be required for the screen wall?

Reponses to RFI 22: A geotechnical report is not available. Geotechnical investigation is subject to the engineer of record discretion.

23. Section 01010 Para. 2.5 H – Reference is made to regulated wastes such as PCB’s or RCRA. Can Government verify/confirm that any of the equipment scheduled to be removed contains regulated wastes or is part of this project to conduct said surveys and provide necessary reports?

Reponses to RFI 23: Government cannot verify or confirm that regulated wastes exist on site.

24. Section 01011 Para. 1.6.1.7 – Reference is made to facility remaining in operation during construction. Is any part of the 1,200 tons of cooling referenced in Para. 1.6.1.1to be considered redundant or is the actual demand 1,200 tons? If 1,200 tons is actual demand then is it expected that temporary facilities provide 1,200 tons to satisfy cooling needs and 1,200 tons for redundant/backup cooling?

Response to RFI 24: Actual demand will vary depending on the time of year the work is being performed.

Chillers are set up as N+1 redundancy.

25. Section 01011 Para. 1.6.1.8 – Reference is made to Contractor obtaining and paying for all necessary permits.

Does the Government have or can the Government identify what permits will be required and what their associated cost will be? If not would the Government consider including an allowance line item identifying an amount that all bidders would be required to include in their proposal for permits?

Response to RFI 25: Contractor will familiarize themselves with the project scope to determine which permits (if any) are required.

26. Section 01011 Para. 1.6.2.4 & 1.6.2.5 – Do the previous testing reports referenced for ACM and LBP support unconditionally the last sentence of each Paragraph “remediation is not anticipated”?

Response to RFI 26: The reports are not comprehensive or complete. The contractor shall perform additional testing as necessary to test all other suspect materials being disturbed by construction activities.

27. Section 01011 Para. 1.6.5.4 – Reference is made to exterior door meeting minimum ATFP or DOD Minimum Antiterrorism Standards. Are ATFP assemblies required for entire site i.e. boulders, and will gates at mechanical yard, or louvers at building be required to meet Minimum Antiterrorism Standards?

Response to RFI 27: ATFP assemblies are not required for this project.

28. Section 01011 Para. 1.6.5.9 – Reference is made to providing Fire Extinguishers and brackets. Recently DMAFB Fire Authority Having Jurisdiction has requested this equipment not be provided. Will it be required or not?

Response to RFI 28: Fire extinguishers and brackets are required.

29. Section 01011 Para. 1.6.7 – Reference is made to Mechanical Requirements meeting ‘High Performance Green Building Standards and ACC Sustainability Development Standards. Further reference is made regarding Sustainability in Para. 1.6.15 and Para. 1.6.15.1. wherein Executive Order 13423 is identified. Executive Order 13423 was revoked by Executive Order 13693 on 3/19/2015. What will be required in regards to project and systems sustainability?

Response to RFI 29 The design and construction of this project will incorporate applicable US Government and ACC high performance green building (HPGB) and Sustainable Development objectives and requirements established in Public Laws, and Federal Regulations, addressing as a minimum: site design, water use, energy use reduction (per EPAct 2005 and CFR Title 10 Part 433), building commissioning, materials selection, and indoor environmental quality.

30. Section 01011 Para. 1.6.7.2 – Reference is made to platform ladders, stairs and guardrails for the cooling towers. Is it correct to assume that platform ladders, stairs and guardrails shall be powder coated as identified by Para. 1.6.5.8?

Response to RFI 30: Platform ladders, stairs and guardrails shall be powder coated.

31. Section 01011 Para. 1.6.8.1 – Reference is made to providing new water meter. On other DMAFB projects CE has eliminated water meters, will meter be required and if so is there a specific meter which shall be used?

Response to RFI 31: Provide new water meter. Water meter will be IAW DCG.

32. Section 01011 Para. 1.6.9 – Fire Protection/Detection Requirements reference complete Monaco Fire Alarm System. Is a Wet Pipe Sprinkler System and Mass Notification System required?

Response to RFI 32: Sprinkler system and MNS are not required.

33. What is the Gov.’s intent in regards to phasing? In other words, how are we going to maintain existing chiller operations without proper electrical capabilities since we are required to replace the electrical service?

Response to RFI 33: This is a design-build project. Means and methods are the contractor’s responsibility.

34. Based on maintaining operation during construction, is it acceptable to locate electrical equipment/gear in new locations rather than maintaining existing locations.

Response to RFI 34: Maintaining existing equipment locations is not required. Equipment layout will be determined during the design phase.

35. Can the existing Facility yard be extended into the existing parking lot more or are we constrained by the current area?

Response to RFI 35: Facility yard perimeter can be modified. Facility yard geometries will be determined in design.

36. Since these are large equipment components, where is the closest laydown yard available for contractor use and will we need a traffic control plan for 5th & K-Street?

Response to RFI 36: Limited laydown is available adjacent to the site. Additional area is available in the contractor staging area located off Yuma. Traffic control plan is required for all work affecting traffic flow.

37. Can we re-use existing bufferfly isolation valves and cut in a “T” to provide temp chiller services?

Response to RFI 37: Means and methods is contractor responsibility. Government cannot confirm or verify that existing valves are operational.

38. 1.6.7.1 Clarify the intent of the “multi-chiller master control”. Is this or can this be a Staefa controller or is this intended to be a proprietary control system provided by the chiller manufacturer that only talks between the chillers?

Response to RFI 38: Multi-chiller master control is provided by the chiller manufacturer. This multi-chiller master control will interface with the building staefa system.

39. 1.6.7.1 Can the existing housekeeping pads be re-used with new equipment?

Response to RFI 39: Existing housekeeping pads can be reused or modified to meet new equipment requirements.

40. 1.6.7.2 Provide specifications for the construction of the towers. Are towers required to be constructed of all stainless steel or galvanized or fiberglass or ____?

Response to RFI 40: Stainless steel or galvanized is acceptable. Fiberglass is not acceptable.

41. 1.6.7.2 Provide the wet-bulb temperature that is required for new cooling tower selections.

Response to RFI 41: Please reference DCG for Wet-bulb temperature.

42. 1.6.7.2 Are system sweepers required for the new towers? The existing towers have centrifugal sweeper systems.

Response to RFI 42: Sweepers are required. Sweeper configuration will be determined during the design phase.

43. 1.6.7.4 This paragraph seems to indicate that only one pump is required for the plate and frame system. It is assumed that this pump is being required in addition to the condenser water and chilled water pumps that serve the chillers and cooling towers. Please clarify what additional pump is needed for the plate and frame.

Response to RFI 43: There is an additional pump required for the plate and frame. The intent is capitalize on “Free Cooling” when the outside air temps, chilled water supply temperature and condensate water supply temperature set point are met. Plate and frame will run just off the cooling towers (bypassing the chillers) maintaining chilled water supply set point.

44. 1.6.7.6 Is the new expansion tank required to be diaphragm or bladder type?

Response to RFI 44: Provide a horizontal closed diagram type expansion tank.

45. 1.6.7.6 Clarify the requirements for the new air separator. Is the intent to require a high efficiency coalescing type that is common in the industry today?

Response to RFI 45: Provide a high efficiency coalescing type air separator.

46. 1.6.7.8 Ball valves are typically provided up to and including 2-1/2” piping with larger valves being butterfly type. Will that be acceptable?

Response: to 46: Provide valves per Spec 1011 par 1.6.7.8. Final valve configurations will be determined in the design phase.

47. 1.6.7.9 Is the by-pass loop required around chillers and each cooling tower or can the isolation valves on each piece of equipment meet this intent since there are multiple of each? Flowing around “off” equipment is not energy efficient. If the intent of the bypass is to allow a temporary chiller to serve the load, that can be accomplished on the distribution loop connections.

Response to RFI 47: Provide by-pass loops. Final piping configuration will be determined in design.

48. 1.6.7.10 Where are the basket strainers required?

Response to RFI 48: Basket strainers (if necessary) will be determined by the engineer of record.

49. 1.6.7.15 Can the VFDs serving pumps be used to balance the flowrates in lieu of the calibrated balancing valves?

Response to RFI 49: Provide calibrating balancing valves.

50. 1.6.7.16 Is there an “and” missing between “supply” and “return” in this sentence?

Response to RFI 50: There is a missing coma between “supply” and “return”.

51. 1.6.7.16 Are flow meters required for each of the supply and return lines that enter/exit the central plant or only the one set of main chilled water lines?

Response to RFI 51: Provide flow meters on all chilled water distribution return, supply and by-pass piping.

52. 1.6.7.21 Will feedback from the buildings connected to the central plant be provided by the government for control of the chilled water pumps? Do the existing buildings utilize 2-way chilled water valves to maximize the benefit of the variable primary flow system?

Response to RFI 52: Feedback from the buildings will not be provided by the government. Existing Buildings valve configurations vary.

53. 1.6.7.21 Suggest condenser water flow be constant in lieu of variable to minimize calcification of the towers and ensure adequate media wetting. ASHRAE Green Guide recommends larger delta-T (12 to 18 degF) but not variable condenser water flows. Can constant flow condenser water systems be provided?

Response to RFI 53: Provide variable system.

54. 1.6.8.1 Are water meters required for each of the chilled water and cooling tower make-up systems or is the new water meter only on the main domestic cold water line serving the building?

Response RFI 54: Par 1.6.8.1 references main domestic building water supply.

55. 1.6.1.3 Do the existing as-built drawings include accurate load and panel information?

Response RFI 55: Contractor shall verify accuracy of As-built records.

56. 1.6.1.3 Will the existing as-built drawings be made available prior to providing pricing for the project?

Response RFI 56: As-Builts will be made available.

57. 1.6.2.1 Indicates removal of all existing electrical and communication equipment. Is this project a complete gut of the facility i.e. nothing remains?

Response RFI 57: Significant amount (if not all) of electrical and communication equipment will be removed.

The extent of removal will be determined during the design phase.

58. 1.6.9 This paragraph implies that all fire alarm devices and equipment are to be removed and replaced . Is there any portion of the existing fire alarm system that is to be retained and reused?

Response RFI 58: Significant amount (if not all) of fire alarm system will be removed. The extent of removal will be determined during the design phase.

59. 1.6.10.10 references a new ground system. Is it the intent of this section to require a ground loop around the building with ground test wells at each corner? If not then what in detail is the intent of this paragraph?

Response RFI 59: Ground loops were intended for new transformer and PME.

60. 1.6.10.10 references an isolated ground. Which manufacturer will determine the need for an isolated ground for this facility?

Response to RFI 60: Manufacturer may require an isolation ground for their equipment.

61. 1.6.10.15 references two meters. Is one meter that is capable of providing both current and voltage readings by selection acceptable?

Response to RFI 61: One meter capable of providing both functions is acceptable.

62. 1.6.10.15 DMAFB has indicated ION meters for the manufacturer. Please provide the model number that is desired to meet this paragraph.

Response to RFI 62: Meter models are specified in Base DCG.

63. Based on site information, the existing electrical equipment does not have the code required clearances. Shall this project include rectifying that code violation in its entirety?

Response to RFI 63: All new equipment will meet all required code clearances

64. Can you please confirm that in Section 1.6.5.6, the intent of “paint all ceilings” is to paint the underside of the roof deck?

Response to RFI 80: Painting the underside of the roof deck is required.

65. Can you please confirm that the existing masonry block structure is not considered “factory finished” and that the intent of Section 1.6.5.5 is to paint the entire structure inside and out?

Response to RFI 81: Paint the entire facility.

66. Will a concrete approach be required at new gate entrance?

Response to RFI 82: Concrete approach is not required

67. Can you please provide a list of demo’d materials that the Government would like to keep/salvage, if any?

Response to RFI 83: See response to RFI 19

68. Section 01011, Paragraph 1.6.7.1 says, “Chiller and controls will be suitable to use in a variable primary flow system.” Section 01011, Paragraph 1.6.7.2.1 says, “The chilled water system controls shall be configured as variable primary, variable secondary chilled water flow system.” Is the pumping strategy intended to be variable primary flow or variable primary, variable secondary?

Response to RFI 84: Chilled water system controls shall be configured as variable primary, variable secondary.

69. Section 01011, Paragraph 1.6.2.1 says, “Demolition activities include but not limited to removal of civil systems including gas service and pavements…” Section 01011, Paragraph 1.6.3.6 says, “Cut and cap all natural gas service line at the main.” Can the existing underground gas piping be abandoned in place after it is capped at the main, or does the existing underground gas piping need to be removed back to the main?

Response to RFI 85: Remove all underground piping back to the main.

70. Section 01011, Paragraphs 1.6.7 and 1.6.15.1 briefly mention commissioning, but there are no detailed requirements to describe the scope for commissioning. DMAFB Design Compatibility Guidelines, Section

6.1.1 requires compliance with the latest International Energy Conservation Code (IECC) with Tucson amendments. Will compliance with the IECC commissioning requirements meet the commissioning requirements for this project?

Response to RFI 86: This is a design build project. Commissioning requirements will be determined during the design phase.

71. The 1995 record drawings show one dedicated pump for each of the two underground chilled water loops. Is the intent of this project to use a single set of pumps with N+1 redundancy and headered together to serve both of the underground loops, or does there need to be one pump dedicated for each underground loop like the existing design?

Response to RFI 87: Provide a single set of pumps with N+1 redundancy.

72. The 1995 record drawings show tertiary pumps at each building, but there is no decoupler or common piping to hydraulically separate the buildings’ tertiary loops from the secondary loop that comes from the central plant. Do decouplers need to be added at the buildings’ tertiary loops so the new pumps at the central plant are not negatively affected?

Response to RFI 88: Work is limited to the central plant.

73. Can the Cooling Tower supports be reused or must they be demolished?

Response to RFI 89: Cooling tower supports can be reused or modified to meet new equipment requirements.

74. Page 1, Section 2 of the Solicitation states this is a Negotiated Solicitation. Should that be changed to “Sealed Bid”?

Response to RFI 90: No.

75. Is the Government’s intent to have the expanded metal reliefs at the bottom of the overhead doors removed?

Response to RFI 91: Remove expanded metal reliefs if determined unnecessary. Determination will be made during the design phase.

76. 1.6.8.1 Provide new water meter, will the water meter need to have a remote read device to communicate with the base system? If so, is this SCADA or will it report to base EMCS?

Response to RFI 92: Meter shall be IAW Base DCG

77. If SCADA, are we to provide the SCADA interface module?

Response to RFI 93: SCADA interface is required.

78. RFP page 45, Section L, paragraph L.6.7. Mailing Requirement for Special Marking of Proposal data states, “An electronic version of the proposal shall also be included on a compact disc (CD/DVD).” However the electronic version is not referenced elsewhere including in L.7.2.6 Table L1. Is an electronic copy of the proposal required?

If so, please clarify the specific requirements.

Response to RFI 78: An electronic copy of the entire proposal package is required. Section L.7.2.6 Table L1 has been updated to add further information.

79. RFP page 43, Section L, paragraph L.4.1.1 references registration of professional architects and engineers.

However, the proposal submission criteria does not require submission of any documentation substantiating qualifications. Please confirm documentation showing registration of professional architects and engineers is not required with the proposal.

Response to RFI 79: No documentation is required with the proposal.

80. RFP page 48, Section L, paragraph L.10.2.2. Factor 2, Schedule allows the use of 11” x 17” pages for the bar chart schedule. Please confirm that 11”x17” pages used for the schedule will count as a single page contributing to the 20 page single sided limitation.

Response to RFI 80: Yes, the schedule counts toward the page limitation.

81. RFP page 47, Section L, paragraph L.8.2.5, bonding, references DM005 which references FAR Clause 52.228- 15, However, this FAR clause does not indicate the amount of the bid guarantee. Please clarify if FAR Clause 52.228-1 also applies to this solicitation and if the amount of the bid guarantee is 20% of the bid price or $1 million, whichever is less.

Response to RFI 81: The solicitation has been amended to include FAR 52.228-1, and its appropriate amounts.

82. In regards to RFP page 47, Section L, paragraph L.8.2.5, bonding information, should the bonding capacity letter as well as the bid guarantee be placed behind this single tab or is a separate and distinct tab required for the bid guarantee?

Response to RFI 82: Bonding and bid guarantee should go together in Volume 1. L.8.2.5. has been revised to provide clarification.

83. RFP page 43, Section L, paragraph L.4.1, WOSB eligibility - Where should offerors include the required WOSB documents within the proposal demonstrating compliance with FAR 19.1503?

Response to RFI 83: Include with Volume 1, Representations and Certifications.

84. RFP page 50, Section L, paragraph L.11.7 Teaming Arrangements (TA) and RFP page 59, Section M, paragraph

M.7.10 Teaming Arrangements (TA) both state, “The Government can only determine the responsibility of the prime contractor; FAR 9.604(b). IAW FAR 9.1, Responsible Prospective Contractors; offerors must identify, in their offer, any TA to be considered and identify the relationships and responsibilities of the teaming members.”

Based on these statements, should offerors assume that projects submitted by a key subcontractor or teaming partner (other than the WOSB prime contractor) will not be considered “Acceptable” in meeting the evaluation criteria established for the Past Performance Factor?

Response to RFI 84: The Government will only look at and determine the responsibility of the prime contractor.

The Government will review key subcontractors under the relevancy subfactor of past performance.

85. Can you provide the sign in sheet from the site visit on 01 May 2017 at 0900?

Response to RFI 85: The sign in sheet and meeting minutes have been added to the FBO.gov posting for this solicitation.

86. AF Form 3052 identifies a “Tax Planning Factor of 3.97%. Is this figure to be used in lieu of the multiple formula factor identified by AZ Revenue Department to establish Sales and TPT tax?

Response to RFI 86: Yes.

87. Can the government please clarify if the experience and past performance of a key subcontractor in an exclusive, formal Teaming Arrangement with the prime contractor will be evaluated as “Acceptable” according to the requirements in Section M.7.6 – Relevant Assessment?

Response to RFI 87: The Government will evaluate key subcontractors under relevancy.