Solicitation_Clarification_Questions___Responses_0003.pdf

Question # Question BOR Response

1 Specification 05 51 30 and 05 52 20 - Please provide any loading requirements for the fall arrest system.

See reference standard listed in specification - 29 CFR 1926

2 Specification 23 05 29, Part 2.02, C, 5 - Do the frames and secondaries need to be hot dipped galvanized?

They should be coated in accordance with Section 23 05 29 - Part 2.02 C 5.

Specification 13 34 21, Part 1.06, B, 6 - Is the loading for the cable tray already included in the collateral or is that additional?

The government only defines environmental loads, It’s the contractor’s responsibility to determine the design value for all collateral loads, to include cable trays.

Sheet 1695-D-61859 Demo Plan- Will any clear and grub be required outside the bold-dashed line? Will the large cottonwood tree(5’+ diameter) need removal? Or will this tree need to be protected in place?

Tree will need removal and is in the contactor use area.

Section 01 51 00- Construction Water- Can the existing 24” PVC Navajo Nation or 36” HDPE Yellowman Siphon pipeline be used for construction water and commissioning needs?

Please contact NTUA, 800-528-5011, or www.ntua.com

Section 01 52 10 Field Office- Will the Bureau provide a location for field offices? The assumption is on site or adjacent parcel (3.82 acres) to east.

The government office is not needed for Pumping Plant No. 1, as one exists at SJLWTP Site. Section 01 52 10 will be removed from the contract.

7 Section 01 57 60 Protected Species- Is there any known existence of the listed species to be on the project limits?

Section 01 57 60 - Protected Species has been updated.

Section 01 57 90- Preservation of Historical & Archeological Data- While on site visit had noticed areas staked out as “Cultural Areas”. This area was located south and adjacent to pump building pad. This area was not found on the plan set. To what level of concern shall the GC take in regard to these existing stakes?

Reclamation has cleared site for Culture Areas. Stakes will be removed prior to mobilization.

Section 01 64 40- Gov’t-Furnished Products- Is the transformer in the table the same as tag no S01A01-NTUA-XFMR-T- 001 (on Sheet 1695-D-61983)? Will a more concise date be provided for a delivery date?

The 500kVA transformer referenced in Section 01 64 40 is S01A01-XFMR-T-001.

Section 01 64 00 has been updated to include revised dates.

10 Sheet 1695-D-61983- Who provides the NTUA Vacuum Fault Interrupter?

NTUA will provide transformer S01A01- NTUA-XFMR-T-001 and the NTUA vacuum fault interrupter.

Section 21 25 00-Hybrid Water Mist Suppression System- Will a final inspection from the local fire department be required? Which fire department has jurisdiction over this area?

Contractor is to contact Navajo Nation Fire and Rescue Services for inspection. If Navajo Nation Fire and Rescue Service do not want to do the inspection for a Federal Facility, then the contractor shall hire a third party to do the final inspection of the hybrid system.

Section 31 23 15-Access Road Improvements and Sheets 1695-D-61870 – While on site visit had noticed a large washout area and dump site between Station 15+00 to 20+00 (approx.). Can the Bureau offer some additional direction/scope clarification on retaining wall quantity, washout area repair quantity and slope stabilization quantity?

How much of the dump site needs to be removed? This item seems to be open ended for costs and clarification could help level the playing field.

No additonal direction will be provided.

Contractor to design improvements in accordance with Section 31 23 15. Area of dump removal is dependant on contractor's design. Follow applicable local, state and federal regulations for the removal/disposal of dump material.

Sheet 1695-D-61860- Connection point for the 42” references Reach 2 (Sheet 1695-D-60778) Can this sheet be provided? Can a date be provided when Reach 2 42” pipe will be installed?

The updated drawing number for the connection point is now 1695-D-60779, a draft copy of 90% design for 1695-D- 60779 can be provided to contractor after award (October 2025), The date for the installation of the Reach 2 42" pipe is anticipated to be between mid 2026 and end of CY2028. For bidding purposes assume PP1 contractor shall install a blind flange at the end of the connection point.

Specification 09 96 20, Tabulation No. 4, 13 - Please clarify 1) the desired coating system for buried & exposed in vault/chamber steel pipe; Tab. 4 lists epoxy & Tab. 13 lists epoxy & Tab. 13 lists C222 polyurethane 2) confirm the desired lining system for steel pipe is to be per Tab. 4

Tab 4 is for the interior and exterior of the pipes and the preferred system is epoxy. The contractor is permitted to use solvent borne epoxies, high solids,100% solid epoxies, and on some items, they can do fusion bonded epoxies (FBE). If pipe segments are connected via welding, the contractor is required to have a 3-inch hold back on coatings, and field apply after completion of welding.

Tab 13 is used for repair only on the exterior of the pipes and fittings. We do not use polyurethane on immersion surfaces.

Specification 35 21 95, Part 2.01, A, 1 - Respectfully request paragraph is revised to read: “Steel Pipe: Fabricated in accordance with AWWA C200: a. Steel plate: ASTM A283, grade C, D or E. b. Steel Sheet or coil: ASTM A1011, designation SS, Grade 40, 45, or 50; or ASTM A1018, designation SS, Grade 40 or designation HSLAS-F, Grade 50.”

Acknowledged; request denied. Contractor to use only steel types as identified in specifications.

Specification 32 21 95, Part 2.01, O, 2 & B, 1 - Per Victaulic publication 60.01, an 18” Style 230 coupling is available with a “maximum working pressure” rating of 300 psig; no option is listed as available for 350 psig working pressure.

Respectfully request Part 2.01.O.2 is revised to include Open-Flex 2/3 by Straub, which is available in a 25PN [362 psig] maximum working pressure rating, and is fully compliant with the characteristics c. through g. of this part of Section 35 21 95.

Acknowledged; case-by-case performance ratings that extend beyond the listed ratings are available from some manufacturers.

Request Denied; "or equal" as stated in specification shall include all compliant product selections to be submitted for approval.

Specification 35 21 95, Part 2.03, C, 1 - Respectfully request sub-paragraph is revised to: “…in accordance with AWWA C200, ASTM A53, or ASTM A139…”

Acknowledged; request denied. Observe hydrostatic testing procedures as described in the specifications.

Specification 35 21 95, Part 2.03, C, 1 - Respectfully request new sub-paragraph is placed after .1, as follows:

“Hydrostatic Test: a. Perform shop hydrostatic test on pipe which stresses steel to 75 percent of minimum yield point of the steel. b. Hold pressure long enough to allow thorough inspection of welded joints. c. Repair leaks by rewelding and retesting joints. d. Test sections prior to forming bell and spigot joints. e. Repair defects and retest section before applying lining and coating.”

Acknowledged; request denied. Observe hydrostatic testing procedures as described in the specifications. Steel manifold sections successfully hydrostatically tested at pressures equal to or greater than those stated in the specifications are acceptable. Bell and spigot joints are not allowed.

Specification 35 21 95, Part 2.03, C, 1 - Respectfully request removal of this sub-paragraph w/inclusion of proposed new sub-paragraph .2; three (3) test cycles at 15 minutes hold time for each steel pipe cylinder is excessive

Acknowledged; request denied. Observe hydrostatic testing procedures as described in the specifications.

Drawing 1695-D-61943 - Please confirm if wall thickness of 42" steel pipe is to be 0.375", or rather, may be designed as per typical 'line pipe design criteria': Inside diameter measured to inside of lining shall not be less than nominal diameter flexible coated steel pip. 2) In no case shall steel pipe thickness be less than 0.135-inches. b. Steel Wall Thickness for Internal Pressure: 1) Hoop stress of pipe shell. Not to exceed: a) 50 percent yield strength as defined by grade of steel using the Barlow formula. With pressure defined by Hydraulic Grade Line and pipe centerline as shown on pipeline plan and profile drawings. b) 75 percent yield strength as defined by grade of steel using the Barlow formula. With pressure defined by the greater of pipe transient head class as shown on pipeline plan and profile drawings, or test pressure shown on drawing 1695-D-61942. 2) Barlow formula as defined by AWWA M11 Equation 4- 1.

Confirmed; Wall thickness of 42” steel pipe is to as indicated on drawings. Any other “line pipe design criteria” is not applicable.

Drawing 1695-D-61952 - Please confirm design pressure for ‘R-R’ type harness ring design(s) shall be in accordance with AWWA M11, that is, the test pressures listed on drawing 1695-D-61942. Design pressures currently shown roughly equate to test pressure(s) divided by a factor of 1.5. AWWA M11 utilizes greater of maximum positive transient or test pressure for design of ‘R-R’ harness rings, with an allowable stress equal to 75% of specified minimum yield strength of plate material. The plate dimensions currently shown are indeed adequate though, for the test pressures shown on drawing 1695-D-61942 in accordance with AWWA M11.

Confirmed; harness designed in accordance with AWWA M11. Refer to dimensions as shown on drawings.

Sheet 1695-D-61874- What interior wall type is between Room 3 and 4? What fire rating (if required)?This is on building line C, between 1 and 6/7.

This wall is 2" insulated metal panel one side on 6" mtl studs with 5/8" impact resistant GWB on other side - no rating required.

RFP document-Proposal Instructions-Pg 93-Other Contractor Engagement- Will the Bureau of Rec offer more information on locality of areas of conflict between this project and the 2 other projects(Reach 2/3 HDD and Reach 2/3 Open Cut? This will allow the GC to provide better contractor engagement narrative.

Potential conflict areas would be dirt access road to the Pumping Plant site (Indian Service Route 362). Also the connection points from the Pumping Plant manifold to the Reach 2-3 HDD and the Reach 2-3 open cut projects.

24 Sheet 1695-D-61884- Can a Room schedule be provided with finish callouts?

Room finish schedule will not be provided. The control room is the only space that has a surface (GWB) other than manufacturer finish at wall referenced in question 22 (above) to be coated per spec section 09 96 20.

25 From metal building sub - What kind of loading do we need to do for the Fall Arrest System?

See reference standard listed in specification - 29 CFR 1926

26 From metal building sub - What deflections are needed for the roof and walls?

Reclamation has provided minimum gauges and deflections for roof and wall panels. Contractor to determine deflections of structural members based in accordance with Section 13 34 21.

27 From metal building sub - Is the loading for the Cable Tray already included in the collateral or is that additional?

The government only defines environmental loads, It’s the contractor’s responsibility to determine the design value for all collateral loads, to include cable trays.

28 From metal building sub - What is the weight for each roof hatch? This will need to be provided by mfr.

From metal building sub - Are you set on the removable roofs for both single slopes? In our experience this is a very expensive addition, and in the past it was for fail safes in case the pumps stop working and need to be removed, but was always a “just in case” scenario. Our recommendation would be to add a large garage door instead, as it would be much more financially friendly and easier for install.

Please see revised drawing 1695-D- 61875. The removable sections are for the air chambers only, and not the entire roof. The extents depicted are still approximate and will vary based on the final air chambers furnished.

30 From metal building sub - Do the frames and secondaries need to be hot dipped galvanized?

The metal building will need to meet tabluation 3, which is a coating and not hot dipped galvanized.

31 Will BOR provide temporary construction easements to utilize for material storage and commissioning?

The contractor can utilize any space allowed in the construction right of way as depicted on the drawings.

33 12 71/2.01.C.4.a.2.b: General note 16 on sheet 1695-D-61942 specifies a hydrostatic test pressure of 525 psig between pump discharge and downstream ball valve. There is no AWWA C207 flange class rated for such a test pressure magnitude. Please clarify flange specification & class for connection to pump discharge head.

See drawing 1695-D-61947 for flange detail. Flanges downstream of pump and upstream of ball valve are drawn as ANSI Class 300.

33 14 19/1.01.A.1: please clarify/ confirm that fire hydrant and steel pipe/ fittings are covered under CLIN 73; the price schedule contains no item line for hydrant & associated pipe conforming to Section 33 14 19.

The fire hydraunts are now part of Clin 73, see Revised Spec Section 33 14 19

33 14 19/2.01.A: Section 33 05 19 is not part of the contract documents. Please clarify which section shall govern supply of pipe and fittings.

Section 2.01 A of 33 14 19 now references 35 21 95 - Steel Manifold Piping

Sheets 1695-D-61860, 1695-D-61926: reference is made to sheet 1695-D-61951 for depiction of fire hydrant and associated pipe/ fittings. Section C/61951 only depicts the basic pipe work and does not show the connection detail(s) to proposed fire hydrant. Can a connection detail to proposed fire hydrant be provided in conjunction with Section C/61951?

Fire hydrant details are per the local Authority Having Juristiction (AHJ). These details have been left out of this drawing package and drawing Section C/61951 notes, "Coordinate with local municipality on valving, piping, and hydrant requirements"

36 Metal Building - What kind of loading do we need to do for the Fall Arrest System?

See reference standard listed in specification - 29 CFR 1926

37 Metal Building - What deflections are needed for the roof and walls?

Please see IBC 1604.3 Deflection Limits - L/180 wall panels, L/240 roof panels

38 Metal Building - Is the loading for the Cable Tray already included in the collateral or is that additional?

The government only defines environmental loads, It’s the contractor’s responsibility to determine the design value for all collateral loads, to include cable trays.

39 Metal Building - What is the weight for each roof hatch? This will need to be provided by mfr.

Metal Building - Are you set on the removable roofs for both single slopes? In our experience this is a very expensive addition, and in the past it was for fail safes in case the pumps stop working and need to be removed, but was always a “just in case” scenario. Our recommendation would be to add a large garage door instead, as it would be much more financially friendly and easier for install.

Please see revised drawing 1695-D- 61875. The removable sections are for the air chambers only, and not the entire roof. The extents depicted are still approximate and will vary based on the final air chambers furnished.

41 Metal Building - Do the frames and secondaries need to be hot dipped galvanized?

The metal building will need to meet tabluation 3, which is a coating and not hot dipped galvanized.

Air Compressor Spec - Page 25: 2.07 A 7: 47 psig inlet, 183 discharge? Are they looking for a booster compressor?

Our compressor are 1 psig inlet, our typical recip compressor is 175 discharge.

Inlet Cubic feet? Please provide what they want delivered cubic feet per minute Our 5 hp air reciprocating compressor delivers 16 cfm at 175 psi.

Per section 33 16 14, paragraph 2.07 A 7, air compressor inlet is open to the room.

Air compressor must be rated to deliver 10 to 15 cfm of free air at 100 psig discharge operating conditions with a max continuous pressure rating of 200 psig or greater.