140R4021R0009_Clarification_Questions_-_Round__2_3AUG21_0006.docx

140R4021R0009 – Q&A Responses 3 August 2021 140R4021R0009 Clarification Questions (Round #2)

1. Table 33 11 10C, fails to reference Designations found in the Drawings: 24C100, 24G150, 24E150, 24D175, 24D375, 24D475, & 24HDD425. Please provide Equivalents for these designations.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

2. Spec 09 96 20 – None of the listed Tabulations appear to apply to Buried Ductile Iron Pipe. Possibly applicable Tabulations: Tab. #5 is per AWWA C222 “Polyurethane Coatings for Steel Water Pipe” (Not applicable to DIP); Tab. #6, g: states “Interior and exterior of cast iron or ductile iron pipe and fittings (not mortar lined or polyurethane coated). (Example: Tees, Elbows, and Bends).” Since the DIP & Ftgs are Cement Lined per spec 33 11 13, this Tab appears inapplicable. Please clarify the required coating for Buried Ductile Iron Pipe.

Reclamation Response: Tab 6, Item 1.g of Specification 09 96 20 includes ductile iron pipe and fittings. The exterior is to be coated with high solid epoxy unless polyurethane coated. The interior is to be lined with high solid epoxy unless the interior is cement mortar lined.

3. Spec 33 11 13, 3.02, B, 1 states “Apply shrink sleeves in accordance 09 96 20.” However Heat shrink sleeves are not specified for Ductile Iron Pipe in 09 96 20. Will Heat Shrink Sleeves be required? If so please specify.

Reclamation Response: Heat shrink sleeves are not required for Ductile Iron Pipe since joints are push-on bell and spigot and not welded. Specification Section 33 11 13 has been amended to eliminate the requirement for heat shrink sleeves. The specification change is included in Amendment 0006.

4. Sheet 1695-D-60197 - Please provide the anticipated settlement magnitude for the dynamic joints outside of the McKinley Surge Tank. Reference General Note 16 Sheet 1695-D-60179.

Reclamation Response: Anticipated settlement for the McKinley Surge Tank should be close to zero based on the sandstone that is anticipated to be beneath the tank, and the pile foundation that will be designed for the tank foundation. However, the foundation design is the requirement of the tank subcontractor and their professional engineer.

5. Plan Sheet 60129 details the “OUTLETS”. These are shown as Fabricated steel tees. Could the tee on the Mainline be a Ductile Iron Tee? If so, could the “Unrestrained Couplings” connecting to the Line Pipe be eliminated?

Reclamation Response: The unrestrained couplings upstream and downstream of the tee are required because of potential differential settlement between the concrete thrust block and the pipe. If a ductile iron tee is used, a thrust block would still be required. The mainline unrestrained couplings could be eliminated if short segments of ductile iron pipe with flexible joints are used on each side of the thrust block if approved during the submittal process. The contractor would have to show that the articulation achieved by the original steel pipe design is also achieved by the ductile iron pipe design.

6. Plan Sheet 60129 details the “OUTLETS”. The small dia. components are all shown as Fabricated steel. Could these smaller dia. elements (tees, 90°s, spools) be Ductile Iron?

Reclamation Response: The small diameter turnout piping cannot be ductile iron pipe. Turn out piping is defined to be Metal Piping for Line Pipe Installations by Specification Section 33 11 10, Paragraph 1.02 D.2 Specification section 35 21 95. Metal Piping for Line Pipe Installations requires steel pipe.

7. Can it be assumed that ALL Flange Assemblies from 0-325 head feet are Class D, from 350-575 head feet are Class E, & higher than 600 head feet are Class F?

Reclamation Response: The assumptions presented are not accurate. The ratings for the AWWA flanges are defined by AWWA C207, Steel Pipe Flanges for Waterworks Service.

8. Specifications, Coatings, 09 96 20-29, Tabulation No. 9, Please confirm Tammoseal is acceptable as it is an industry standard for D110 Type III Tanks.

Reclamation Response: Product approval that meets or exceeds all performance requirements will be evaluated after award during the submittal process for specific materials and coatings.

9. Specifications, Design Requirements, 33 16 00-5, Please provide the overflow rate for the tank.

Reclamation Response: The overflow rate of the tank is 14.7 cfs, the design flow rate for the Reach 12.1 pipeline, which is shown on Drawing 1695-D-60113, General Note 6.

10. Specifications, 33 16 51-6, Please confirm a D110 Type III tank does not need to provide post-tensioning systems from a Post-Tensioning Institute (PTI) Certified Plant as no post-tensioning is done in a Type III Tank.

Reclamation Response: Post-tensioning is a requirement of the floor system of the D100 Type III tank, and may be used for the roof, in accordance with the contract drawings and Specifications Section 33 16 15, Part 1.04.H and Part 1.04.I. However, these post-tensioning systems are not required to be from a Post-Tensioning Institute (PTI) Certified Plant for the D110 Type III tank. This statement in Specifications Section 33 16 51, Part 1.05.A.1 has been deleted and the specification change is included in Amendment 0006.

11. Specifications, 33 16 51-7, Please confirm the steel diaphragm for a D110 Type III tank may be uncoated and a minimum thickness of 26 gauge as allowed in AWWA D110-13 Section 2.5.1.3. Steel-sheet Diaphragms, Page 10.

Reclamation Response: Steel diaphragm for the D110 Type III tank shall be 24 gauge and galvanized in accordance with Specifications Section 33 16 51, Part 2.01.A.5.

12. Specifications, 33 16 51-11 and Contract Drawings 1695-D-60442, Please confirm a Post-tensioned concrete floor is not required for a D110 Type III Tank and the requirement of an “Actively reinforced (structural) floors shall be a minimum 8-inches thick” does not apply. Please confirm that the D110 Type III tank manufacturer may design the floor as a 4” thick membrane floor with conventional reinforcement as allowed in AWWA D110-13 Section 3.8 Floor Design, Page 31.

Reclamation Response: D110 Type III tank shall have a post-tensioned concrete floor, in accordance with the contract drawings and Specifications Section 33 16 51, Part 1.04.H. Statements within Specifications Section 33 16 51 referring to an actively reinforced structural floor will be revised.

Drawing 1695-D-60442 is related to a previous contract that is currently in construction and is not associated with the Navajo Code Talkers Sublateral. Response above is assuming the drawing was referring to 1695-D-60162.

13. Specifications, Coating over prestressing wire, 33 16 51-11, Please confirm a ½” of shotcrete cover over the steel diaphragm is acceptable as specified in AWWA D110-13 Section 3.5.4.2, Page 23.

Reclamation Response: Per Specifications Section 33 16 51, Part 3.01.H.8, 1-inch of shotcrete cover over steel diaphragm is required.

14. Specifications, Coating over prestressing wire, 33 16 51-11, Please confirm each prestressed wire will require clear cover over the wire of only 1/4” as specified in AWWA D110-13 Section 5.3.3.4.3., Page 69.

Reclamation Response: Per Specifications Section 33 16 51, Part 3.01.H.9, ½-inch of shotcrete clear cover over prestressing wire is required.

15. Specifications, 3.01.J Roof, 33 16 51-12, Please confirm the minimum concrete thickness for a precast dome D110 Type III tank may be 4” as allowed in AWWA D110-13 Section 3.6.3 Thickness and reinforcement, Page 27.

Reclamation Response: Per Specifications Section 33 16 51, Part 3.01.J.1, the thickness of the cast-in-place or precast roof shall be 5 inches.

16. Contract Drawings, Sheet 1695-D-60162, Please confirm backfill may be raised to the finish floor elevations of the concrete water tanks.

Reclamation Response: Backfill and 6-inch gravel surfacing may locally raised to finish floor elevation at perimeter of tank if concrete tank option is used for Black Hat Tank.

17. Contract Drawings, Sheet 1695-D-60162, Please note the specifications state a Side Water Depth (SWD) of 33’-0” while the contract drawings show a tank floor elevation of 7070.25 and an overflow weir of 7100.00 resulting in a SWD of 29’-9”. Please confirm what the SWD for the tank will be and confirm elevations.

Reclamation Response: The side water depth for the Black Hat Tank is 29’-9”, and the tank floor elevation is 7070.25.

18. Contract Drawings, Sheet 1695-D-60187, Please provide the material for the exterior ladder.

Reclamation Response: Per Specifications Section 33 16 00, Part 1.04.C, all exterior ladders shall be galvanized steel.

19. Contract Drawings, Sheet 1695-D-60166, Please provide the distance from Overflow and Drain Vault No. 1 to the tank foundation to ensure the tank will not be undermined.

Reclamation Response: The precise distance between the edge of the foundation and the Overflow and Drain Vault No. 1 will be based on the foundation design of the tank and wall thickness of the vault. An approximation of the distance is depicted on Drawing 1695-D-60187. Final design of tank and foundation are Contractor responsibility.

20. Contract Drawings, Sheet 1695-D-60616, Please confirm for the D110 Type III concrete tank the tank manufacturer may design the overflow weir, pipe and pipe supports as interior to the tank in accordance with industry standards.

Reclamation Response: The overflow weir, pipe, and pipe supports may be inside of the tank if the overflow discharges into the Overflow and Drain Vault No. 1 above the ground surface, with a 2’-0” air gap as depicted on Drawing 1965-D-60187.

21. Structural Design Data, Sheet 1695-D-60399, Please confirm the allowable bearing capacities given are based on a safety factor of 3.

Reclamation Response: The question is referencing a drawing from a previous solicitation (1695-D-60399). This drawing number is not associated with the Navajo Code Talkers Sublateral.

22. Master Plan 2: Past Performance, Page 98 - It states PPQs already on file from previous competitions are also allowed if they meet the definitions of recent and relevant defined in this solicitation. If the offeror utilizing an existing PPQ that it has on file from a previous competition is that PPQ to be sent to the USBR email or included in the proposal? If included in the proposal do the PPQ’s count against the 50 page proposal page limit?

Reclamation Response: Please include PPQ’s pertinent to work similar in scope and magnitude within the last 10 years. Please see the requirements of Master Plan 2. The PPQ will not count against the page limit following Section L of the solicitation, page limitations (requested attachment).

23. Are the funding timeframes flexible? (i.e. Is it possible for more than 40% to be available in 2022?)

Reclamation Response: Funding is estimated in the solicitation based on Reclamation’s assumption on contractor burn rates and costs incurred. Once the contractor’s schedule is approved, that amount can be increased for the 2022 and 2023 fiscal years, as needed.

24. (Round 1 question 18)The RFP says that 40% of the funding is available for 2022, 50% for 2023, and 10% for 2024. It is our understanding the Government's fiscal year starts/end in September. Does this mean that 90% of the funding will be available in September of 2022?

Reclamation Revised Response: A response was provided to this question in round 1, question 18. The previous response to this question was incorrect. Please see I.25 WBR 1452.232‐80 LIMITATION OF FUNDS (FIXED‐PRICE CONTRACT) of the RFP. Funding percentages shown are estimates. The Government's fiscal year runs from October 1 to September 30. Funding estimates for fiscal year 2023 would not fall in September 2022. The estimated funding will occur after October 1, 2022 with an exact date unknown; however sufficient funding based on the contractor’s approved schedule will be provided so as to not impact the contract.

25. On 1695-D-60117 there is a section of pipe that is classified as (30D600), this classification is not in table 33 11 10B. Please provide information about 30D600.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

26. Plan On 1695-D-60254 there is pipe classified as 24G150, 24E150, 24D175 these pipe classifications are not included in table 33 11 10 C. Please provide information about these type of classifications.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

27. On 1695-D-60255 there is pipe classified as 24C100 this pipe classification is not included in table 33 11 10 C. Please provide information about 24C100.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

28. On 1695-D-60256 there is pipe classified as 24D375 this pipe classification is not included in table 33 11 10 C. Please provide information about 24D375.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

29. On 1695-D-60257 there is pipe classified as 24HDD425, this pipe classification is not included in table 33 11 10 C. Please provide information about 24HDD425.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

30. On 1695-D-60259 there is pipe classified as 24D475, this pipe classification is not included in table 33 11 10 C. Please provide information about 24D475.

Reclamation Response: Table 33 11 10C has been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

31. Note 1 on 1695-D-60113 References page 1695-D-310. On this page the Begin of Reach 12.1 is at Station 121010+38.98 which contradicted the Begin of Reach 12.1 listed on 1695-D-60113 which shows the Line Pipe starting at Station 121020+80.

Reclamation Response: The beginning of Reach 12.1 Line Pipe for this contract begins at Station 121020+80. Reference drawing 1695-D-310 is For Information Only from a previous contract that installed Reach 12.1 from Station 121010+38.98 to Station 121020+80 to show the connection details to the existing line pipe.

32. STA 122104+39.28 shows the Unknown OH Power line? Is further information on the Utility owner expected or is the line decommissioned/not live?

Reclamation Response: Drawing (1695-D-60256) has been amended to show Continental Divide OH Powerline at Station 122104+39.28 and Station 122105+31.97. The specification change is included in Amendment 0006.

33. STA 122280+00 shows an OH Power line crossing the construction ROW. At what height is the OH Power line at this location?

Reclamation Response: The OH Powerline is a NTUA OH Powerline at Station 122279+53.39, Clearance 91.1’ @ 45°F; Drawing (1695-D-60259) has been amended to include OH Powerline information.

34. Per Specification Section 33 11 10 Part 2.01 C, No more than one metallic pipe and non-metallic pipe material may be used. Is this for each reach or for the entire line?

Reclamation Response: One each metallic pipe and non-metallic pipe material is for entire Line Pipe (Reach 12.1 and Reach 12.2 combined).

35. Spec Section 33 11 10 (Pipeline General Requirements) has a Flushing requirement of 3 ft/sec. This is a very high volume of water. For a 30" pipe this would equate to about 158.8 Gal/Sec……. Or about 9,500 GPM. Will the owner be able to provide this amount of water to flush to pipe? Please clarify flushing requirements.

Reclamation Response: Per 01 51 00 – Temporary Utilities 1.04 A. Contractor is responsible for providing water required for construction purposes. See Section 33 11 10 3.08 for flushing requirements.

36. Specification Section 33 16 00 - Water Storage and Surge Tanks, Part 2, section 2.02, paragraph Q refers to the Overflow Screen Flange and states it’s shown on page 1695-D-60187 in the drawings. Did you mean to refer to page 1695-D-60188?

Reclamation Response: The reference drawing should have been 1695-D-60188. Specifications Section 33 16 00 has been revised. The specification change is included in Amendment 0006.

37. In the Symbol Pipe Equivalents Table in Spec Section 33 11 10, there are instances when the pipe designation listed in the plans calls for a 24-inch pipe but the corresponding PVC and HDPE pipe is actually a 30-inch pipe per the PVC or HDPE listed in Table 33 11 10B-Symbol Pipe Equivalents-Reach 12.1. Is this a typo?

Reclamation Response: No this is not a typo; see Specification 33 11 10 – Pipeline General Requirements, 1.01 A 2. B. “Next larger size of pipe than shown on drawings for some pipe material may be required to meet inside diameter requirement of the specifications.”

38. Spec Section 33 11 10 (Pipeline General Requirements) - 3.10.6 say to test the pipe for 96 hours. This is a longer pressure test time period than we are familiar with. Can the owner please provide the Standard that this 96 hour test comes from?

Reclamation Response: This is a Reclamation requirement, not a particular industry standard.

39. Please clarify on page 1695-D-60267, this profile drawing is showing for the pipe classification of 24HDD200. In the plans on page 1695-D-60254 in the exact same station location as the 24HDD200 profile drawing, the section of pipe is classified as 24HDD225. The pipe classification 24HDD200 is not in Table 33 11 10B-Symbol Pipe Equivalents either. Is the profile drawing on 1695-D-60267 a typo?

Reclamation Response: Drawing 1695-D-60267 has been amended to match the profile drawing with a pipe classification of 24HDD225. The specification change is included in Amendment 0006.

40. 33 11 10 Table B - Tables 33 11 10B & 33 11 10C detail pipe equivalents. Please provide pipe equivalents for the following pipe.

· Reach 12.1:

30D600 on Page 1695-D-60117

· Reach 12.2:

24G150 on Page 1695-D-60254 24E150 on Page 1695-D-60254 24D175 on Page 1695-D-60254 4C100 on Page 1695-D-60255 24D375 on Page 1695-D-60256 24HDD425 on Page 1695-D-60257

Reclamation Response: Tables 33 11 10B and 33 11 10C have been amended to include the missing pipe designations. The specification change is included in Amendment 0006.

41. 33 11 10 Table B/1695-D-60259 - Pipe 24D475 is shown in the Reach 12.2 drawings; however, the pipe equivalents for this pipe are found in 33 11 10B - Symbol Pipe Equivalents - Reach 12.1. Please confirm if pipe 24D475 is applicable to Reach 12.2.

Reclamation Response: Table 33 11 10C has been amended to include 24D475 for Reach 12.2. The specification change is included in Amendment 0006.

42. 10 14 00 - Spec section 10 14 00 references sheet 1695-D-60131. No sheet exists in the released set. Please provide sheet 1695-D-60131.

Reclamation Response: Specifications have been amended to delete references to 1695-D-60131. Change was included in Amendment 0003.

43. 51 00 10 - Spec section 51 00 10, section V.A., paragraph 7 mentions it may be more cost effective to overexcavate for the future tank site at this time. Excavation quantities given and cross sections indicate future tank area is to be overexcavated at this time. Please confirm it is the intent of the design to overexcavate the future tank area at this time.

Reclamation Response: Yes it is the government’s intent to overexcavate for the future tank at this time, see Drawing 1695-D-60161.

44. At station 122130+06.44, the line takes a turn and heads up the corner of a very steep hill as an open-cut install. Is it possible to slide this bend down the line to pass this hill and then install the bend and head back towards the original alignment? This could provide cost savings for the owner.

Reclamation Response: Due to property owner restriction/limitations the Line Pipe cannot be moved from its current alignment in this area.

45. Is the wide dashed space between points DHR12.2-16-12 and DHR12.2-16-13 on sheet 6 of 7 a temporary easement to use for HDD equipment setup and/or pipe stringing and welding?

Reclamation Response: Yes; the dashed space between points DHR12.2-16-12 and DHR12.2-16-13 on Drawing 1695-D-60259 is a temporary easement for Contractor use.

46. What is the Owners intent for the role of Engineering Representative? Is the intent for this role to be filled by GC personnel or subcontractor personnel?

Reclamation Response: The Engineering Representative may be filled by the GC or by a subcontractor. As stated in the RFP, the Engineering representative will be responsible for overseeing trenchless technology design, submittals, etc

47. Can the Kiteworks site be set up for contractors to upload volumes by the Master Plan versus complete volumes?

Reclamation Response: Contractor can submit in any way into Kiteworks that meets the requirements of Section L of the RFP. See Section L of the solicitation, L.15 WBR 1452.215-81 – Proposal Instructions, (e) Electronic Offers for further clarification and instructions for using Kiteworks.

48. Can you please provide the potential dates for the interviews that will take place?

Reclamation Response: Specific dates cannot be provided until Reclamation knows the quantity of proposals received. Presentations are currently scheduled to take place during the weeks of September 20th or the 27th.

49. Do PPQs for the Contractor’s proposed projects need to be fully completed at the time of bid or can the Contractor submit the entire PPQ (with the unfilled evaluation section) which would provide contract and client information for the project that the Government can contact?

Reclamation Response: PPQ’s must be submitted per the directions in Section L, Master Plan 2. Either PPQ’s or CPARS evaluations need to be submitted by the proposal due date. The Government can reach out with additional questions to the client POC’s after proposal submittal, but PPQ’s and/or CPARS must be submitted by proposal due date/time.

50. Section 33 11 10- Options for pipe type will be the contractors choice?

Reclamation Response: Yes, so long as requirements of all Specifications are met.

51. Section 31 23 70 CSLM- Can/will the BOR offer a suitable/designated borrow site for the aggregate/native soil source?

Reclamation Response: No designated borrow site has been determined by Reclamation.

52. Is the existing Tohlakai Hill pumping station operational? Can this be a location to obtain construction water?

Reclamation Response: ) See SECTION 01 51 00 1.04 for available water sources. The contractor is responsible for obtaining all construction water and coordinating with water utilities.

53. Would the BOR consider extending the bid due date for 3 to 4 weeks due to the nature of the proposal elements in Vol I and II?

Reclamation Response: No additional extensions can be granted. Reclamation is on a schedule that needs to be met based on the need to complete all portions of the NGWSP entire project.

54. On page 91 of the RFP in Cost/Price Information to be included in Volume II, the BOR asks for a breakdown of unpriced labor hours included in the estimate. Please clarify and provide an example of what the GOV intends.

Reclamation Response: This requirement for a breakdown of unpriced labor has been removed as part of Amendment 0006.

55. Contract Clause 52.216-4 addresses escalation on Concrete, Steel, Lumber, and PVC Pipe. Would the owner consider adding HDPE pipe and Fuel to this clause?

Reclamation Response: HDPE and Ductile Iron Pipe have been added to the materials for which adjustment may be requested. Fuel will not be considered for addition to this clause. This was updated as part of Amendment 0006.