21R1300_Notice4-Issued.pdf

DEPARTMENT OF THE NAVY

NAVAL FACILITIES ENGINEERING COMMAND, PACIFIC

258 MAKALAPA DR., STE. 100

JBPHH, HI 96860-3134

RFP N62742-21-R-1300

Notice No. 4

14 January 2021

PRE-PROPOSAL QUESTIONS & ANSWERS

RFP N62742-21-R-1300

WON 1606003, FY20 MCAF PROJECT

PAF180200 APR JET FUEL STORAGE TANKS,

ROYAL AUSTRALIAN AIR FORCE (RAAF) BASE TINDAL,

AUSTRALIA

NOTE: The following questions and answers are provided for INFORMATION ONLY. The RFP remains unchanged unless it is amended in writing on a Standard Form 30.

RESPONSES DEFERRED FROM NOTICE NO. 2 DATED DECEMBER 18, 2020:

2. Proprietary products. Please identify which items are required from a proprietary manufacturer or specific model on this project. If there are any, please provide the Justification and Approval documentation for this and identify three viable manufacturers for each of the identified proprietary items for the contractors to contact to receive competitive quotations.

ANSWER: Specification Section 28 31 63.00 20 has been updated. See Amendment No. 0001.

5. On Drawing S101 Detail A1 you show a note that states: “addition Lean Concrete around limestone pinnacles.” What are we to assume as to the added excavation and lean concrete backfill for this note? Please express this in Cubic Meters. Or, are we to handle this as additional work once determined in the field?

ANSWER: Drawing S101 Detail A1 references civil sheets. See Amendment No. 0001, Sheet

C-420.

9. Please provide the location for the water source for us to use on this project.

ANSWER: Potable water will not be available. Non-potable fresh water is available as indicated in the revised Section 01 50 00 issued with Amendment No. 0001.

11. Please provide the location for the water source for supplying the hydrotesting water for tank testing.

ANSWER: See revised Section 01 50 00 issued with Amendment No. 0001.

26. Section 33 56 21. 17, Paragraph 3.3.5, requires testing of the finished tank roof plate slope by

Puddle Test. We request the Government to wave the puddle test requirement for the Tanks roof plate, as the Tanks roof is flat and will be covered by the concrete slab.

ANSWER: Paragraph 3.3.5 does not have any requirement for a roof puddle test. Paragraph

3.5.7 requires a roof puddle test after coating and will be deleted. See Amendment No. 0001.

28. As per Section 3356 21.17, Paragraph 3.5.6.1, after other tightness testing is complete and after application and cure of the interior and exterior coatings, fill test of the tank shall be started using fuel. Please confirm that the fill test of the tank is not in the Contractor’s scope, and the Contractor must only remain on standby during fill test to assist in witnessing leaks and performing necessary repair activities.

ANSWER: Provide as specified in the revised Section 33 56 21.17 issued with Amendment No.

RESPONSES DEFERRED FROM NOTICE NO. 3 DATED JANUARY 7, 2021:

30. Can you please issue the 12d model for the bulk earthworks and civil works.

This will greatly assist in calculating the quantities of cut and fill material required for the project.

ANSWER: See response to Question 1.

31. Does the delivery of the project require access to the site through the front base gate (Carson

Drive) or can the contractor access the site via the Stuart Highway?

ANSWER: Access to the project site is anticipated to be via the Tarrakan Road extension and existing Airport Road.

32. Can NAVAFC please advise if the spoil created as a result of the civil activities needs to be removed from the site or is there a location on-site that the spoil can be located?

If the material can be disposed on-site, are there any requirements that need to be met, compaction etc?

ANSWER: Generation of excess soil is expected to be unlikely. See Site Sections on Drawing C-420 and C-421.

33. Drawings C-001, C-101 & C-102

What is the timing of the adjacent RAAF Fuel Storage Works.

a. Is new Fence line and Bike path expected to be completed prior to works commencing and entire scope will therefore be within the RAAF Tindal Facility?

b. Will access to Site be provided via newly constructed Tarakan Road Alignment, including entry via the new West Entry Gate?

c. Will Drainage Swales be completed along the new Tarakan Road Alignment..

ANSWER: a. Yes.

b. See response to Question 41.

c. Yes.

34. Will construction water be available on site at Tindal airbase for construction?

ANSWER: See revised Section 01 50 00 issued with Amendment No. 0001.

35. Is the water suitable for earthworks/ pavements/ other construction activities?

ANSWER: Yes.

36. Are there any environmental/ regulatory conditions that will restrict access to the water source?

ANSWER: No.

37. What is the maximum allowable quantity of water able to be taken each day, week, month, year, total project?

ANSWER: See Section 33 56 21.17, Paragraph 3.5.4.3.

38. Is the water source available 24/7 and every calendar day?

39. What is the average flow discharge rate from the water source?

ANSWER: See response to Question 37.

40. Are other contractors/ base personnel using the water source at the same time?

41. Please confirm the Access Route and Pavement Section integrity and capacity for contractors use to enter and leave the site with heavy loads.

ANSWER: Access route to the site will be along existing Tarakan Road. Tarakan road will be extended/realigned in Work Element 7 by others. The extended/realigned road is designed to transport heavy loads once constructed. Also see Drawing G-005 General Note 6.

42. In reference to Drawing C-201, shall Contractors assume that Tarakan Road, Access Road 2

Entry, and the Drainage Ditch along Tarakan road (being constructed by others in WE07) will be complete and ready for our use and continuation at the beginning of construction of this contract?

43. Drawing C-101 indicates over 620 meters of fence line demolition. Please confirm that this work is to be performed under this contract (not part of WE07) and if the Site Surveillance System is to be included in this demolition, or if it will be removed by others prior to commencement of this contract.

ANSWER: Confirmed.

44. Please confirm that Fencing being performed as part of WE07 (Note 4 on Drawing C-101) will ensure a secured site for the duration of this contract, and that no temporary fencing is required to maintain site security while construction is taking place.

45. Drawing C-101 shows what appears to be an unimproved road following along the fence shown for removal. Please confirm if the removal of the road will be performed as part of WE07 or this contract.

46. Please confirm that the area identified as “Contractor Laydown Area” shown on Drawing C-

102 is the only laydown area for office facilities, employee parking, plant/equipment, construction materials, vegetation, rock, trench spoils, and imported fill materials.

47. Please confirm the intent related to handling/disposal of all PFAS-affected material. Shall both spoil and vegetation remain onsite, or shall any PFAS material be removed from the site?

ANSWER: All PFAS contaminated material shall be transported to the RAAF Base Tindal PFAS stockpile area.

48. Please confirm the intent related to handling/disposal of the light timber found onsite. Shall it be mulched and left on site or collected and disposed off-site?

ANSWER: Light timber that is not processed and reused onsite is solid waste and must be transported off Government property. See specification Section 01 57 19 Paragraph 1.2.12, Paragraph 1.2.12.2, and Paragraph 3.7.2.2. Beneficial reuse of the material is encouraged. See specification Section 01 74 19.

49. No instruction has been provided related to acquiring construction water onsite. What resources are available for contractor use as construction and hydro-testing water? Are there any capacity or seasonal constraints on this water source?

ANSWER: See specification Section 01 50 00 Paragraph 3.3. See specification Section 33 56

21.17 Paragraph 3.5.4.3 for tank hydrotest water.

50. If no water is available for construction use onsite, can a local source be provided for contractors to solicit for estimating the construction water needed to build the project.

ANSWER: See specification Section 01 50 00.

51. Please confirm material at the dedicated Borrow Pit will qualify as suitable material for select/general fill to be placed on this contract.

ANSWER: There is no borrow pit on the base. See specification Section 31 23 00.00 20 Paragraph 1.5.f.

52. Please confirm enough material will be available at the dedicated Borrow Pit to satisfy the needs of this project, or provide an estimated volume contractors should base their assumptions on.

ANSWER: See response to Question 51.

53. During the site visit various monitoring wells were observed on site. Can data from these wells be provided to contractors for reference?

54. During the site visit small diameter trees were observed on site. Please confirm if the intent is to remove trees. Can a count be provided to contractors to bid equally?

ANSWER: All trees within the clearing limits shown on Drawing C-101 shall be removed. See response to Question 48.

55. During the site visit we noticed that a substantial area of the project has rock material on the existing surfaces. As there is no topsoil on these areas, will we be required to remove this material to the required depth of 150 mm for topsoil and then another 300 mm per Specification Section 31 23 00.00 20, Paragraph 3.5, surface preparation for the scarification and compaction requirement? Or can we just clean and place the select or general fills on top of the existing rock area?

ANSWER: See site sections on Drawings C-420 and C-421.

RESPONSES FOR NOTICE NO. 4:

60. In Specification Section 32 13 14.13, Paragraph 2.10.1.2, Batching and Mixing Plant, it states: “provide a plant designed and operated to produce concrete within the specified tolerances, with a minimum capacity of 200 cubic meters per hour.” The quantity of PCCP paving in the option item of this project is not very large, and it would be best to use a local commercial plant to supply the concrete for this work. Their capacity is a maximum of 65 cubic meters per hour; would that be acceptable? This would [sic] be done in lieu of moving in a central batching plant just to supply the quantity in the PCCP option work.

ANSWER: Specification Section 32 13 14.13 Paragraph 2.10.1.2 is applicable only if a concrete batch plant is mobilized to the project site.

61. Section 01 14 00 - WORK RESTRICTIONS, Page 2, states in Paragraph 1.3.2. Working

Hours: “Regular work hours at RAAF Base Tindal are between 0600-1900, Monday through Friday, excluding Northern Territory public or regional holidays. For access outside of these hours, after hours permissions through the Defence Contractor Access Card (DCAC) issuing process are required.” We are concerned about the increased cost impact of a five-day work week, due to the remote location of this project, and significant specialized subcontractor involvement of trades traveling from Australian locations outside of the Northern Territory.

For bidding purposes, can the contractor expect to work the weekend days to progress the construction schedule and efficiency of the crews and equipment?

ANSWER: Yes, Contractor would be able to work the weekend days if after hours permissions through the Defence Contractor Access Card (DCAC) issuing process are obtained.

However, Base support would be limited during the weekend days.

62. We see no mention of asbestos removal on this project. Unless told otherwise, we are going to assume that there is no requirement for removing asbestos particles from the project surfaces.

ANSWER: Concur. However, there are requirements for handling and disposal of unforeseen contaminated material. See specification Section 01 57 19.

63. We see no mention of PFAS materials on this project. Unless told otherwise, we are going to assume that there is no requirement for removing PFAS materials on this project.

ANSWER: See response to Question 62.

64. Was there a geotechnical report completed on this project? If so, could you provide us a copy?

ANSWER: A geotechnical investigation and report were completed. The report will not be made available.

65. During the site visit we noticed that a substantial area of the project has rock material on the existing surfaces. As most if not all these areas are to have select or general fill placed on them what is the requirement for these areas? In specification Section 31 23 00.00 20, Paragraph 3.4.4, Hard Material and Rock Excavation, it states: “Remove hard material and rock to elevations indicated in a manner that will leave foundation material in an unshattered and solid condition.” Are we to use this requirement in these areas? Or can we just clean and place the select or general fills on top of the existing rock area?

ANSWER: See response to Question 55.

66. The site visit photos indicate several shots of a fire hydrants (pages 25, 26, 27, and 28 of 54).

Please provide the following additional information:

a. Can you provide a distance or a plan overview drawing showing the location of these fire hydrants in relation to the project site?

b. Please identify the quantity of fire hydrants. Are there only one or four locations?

c. Please provide the size of connection at each of the fire hydrants.

d. Most importantly, please provide the flow rate at each of the fire hydrants.

ANSWER: See specification Section 01 50 00 Paragraph 3.3.2 c. last sentence which states “Under no circumstances will taps to base fire hydrants be allowed for obtaining domestic water.”

67. Request an extension to end of February and the date you intend to commence this project?

ANSWER: See Amendment No. 0001, which extended the date for receipt of proposals to 25

February 2021, 2:00 p.m. HST.