Amendment_3_Questions_and_Answers_8-5-22_03.docx

GRCA 190083

Replace Transcanyon Waterline and Improve Potable Water Systems Grand Canyon National Park

Solicitation 140P2022R0100 – Questions and Answers

Amendment 1, issued 7/22/22:

1. Question: Can you post the as‐built drawings for the existing transcanyon pipeline and pumping stations at roaring springs and Indian Gardens?

Answer: No set of comprehensive as-builts exist. The solicitation documents are the most current basis of existing system information available.

2. Question: Is AIR-SHIELD LMP an acceptable approved equal material?

Answer: The prime contractor will make all material submittals to the NPS for approval after award. Any substitution requests should be submitted to the eventual awardee of this contract.

3. Question: Do you have a list of contractors who are looking at this project?

Answer: The Presolicitation Attendees list was issued with a Special Notice on sam.gov under this solicitation number on June 21, 2022.

Amendment 2, issued 7/29/22:

4. Question: The Special Notice posted on May 26 gave on information on a Virtual Pre-Proposal Conference to be held on June 17, and an escorted Site Visit to occur on June 21 - 24. Will there be a second escorted Site Visit before proposals are due?

Answer: Site visits for areas not open to the public will be considered by appointments on an as-requested basis. Please email your requests to timothy_burger@nps.gov and edwin_berry@contractor.nps.gov and identify the specific area of the project you would like to see. Areas closed to the public include: South Rim Heliport, Havasupai/Indian Gardens Pump Station, Cottonwood and Manzanita NPS Buildings; There is limited access around Phantom Ranch WWTP because of active construction.

5. Question: Even though a single comprehensive as-built set does not exist, there are a few relevant as-built drawing sets. Can you post those for reference? #1 Transcanyon Water Line # 3608, #2 Transcanyon Water Transmission System Improvements- Phase 1 # 113-41126 A, #3 Transcanyon Water Transmission System Improvements- Phase 2 # 113-41127, #4 New Roaring Springs Pumphouse 1977 ( no drawing number known).

Answer: No as-builts will be provided during the solicitation phase of this project.

6. Question: Solicitation for this project requires the Project Schedule submitted in our proposal to be in MS Project Gantt Chart format. See Solicitation page 50 of 56 Factor 4. Our company uses P6 as our scheduling software. Can a P6 Gantt Chart format be used in our submission in lieu of the MS Project format?

Answer: MS Project or Equal - P6 is acceptable software.

7. Contracting Officer’s Note: Expanded drone footage of the project can be accessed following the link and Password provided below:

https://player.vimeo.com/video/730467912 Password: HDRNPS

Amendment 3, issued 8/5/22:

8. Question: Dwg 01-C400, Keynote 12 indicates the use of a new 10” Finish Water (FW) pipe. Dwg 01-Y107 from the P&ID indicates the use of an 8” FW pipe connected to existing finished water tank at South Rim Tank Farm. Please advise correct size FW piping.

Answer: The correct size is 8” FW.

9. Question: Dwg 01-C101, Keynote 12 New Fire Hydrant. No Bollards are indicated to protect Fire Hydrants. Please advise if Bollards required to protect Fire Hydrants.

Answer: The bollards are located in pull-off areas from the main access drive. No bollards are required.

10. Question: Dwg 01-S102, Keynote 6 indicates FRP Grating. Drawing does not arrow keynote 6. Please advise which grating is FRP.

Answer: Keynote 11 also indicates the area of FRP grating. Note that FRP grating is intended to be used in the chemical storage areas including the Coagulant Room, Sodium Hypochlorite Room, Caustic Soda Room, and Chemical Drum Room as referenced on the drawings. Please reference Sheet 01-A101 for room locations and structural sheets for grating details. Other grating material types are also indicated in the Drawings.

11. Question: Dwg 01-S103, Keynote 3 indicates w14x90 Steel Col. Please advise base plate and connection detail.

Answer: Column base plate schedule and associated connection details are provided in Standard Detail 5/00-S506 (Volume 0).

12. Question: Dwg 01-S105, HSS 12X12X1/2 Col. Is indicated. Please advise base plate and connection detail.

Answer: Column base plate schedule and associated connection details are provided in Standard Detail 5/00-S506 (Volume 0).

13. Question: Dwg 01-D302, Keynote 4 indicates wall bracket pipe support. Dwg 01-D302, Keynote 6 indicates galvanized wall bracket FRP Tray Support. Please advise quantity of supports for note 4 and note 6.

Answer: Spacing requirements for wall bracket pipe supports are defined in Detail 8, Sheet 00-D501 (Volume 0). In addition, the Contractor is responsible to design a support system in accordance with the requirements of Specification Section 40 -05 07 Pipe Support Systems. Note that not all pipe supports necessary to meet the requirements identified in the standard details and specifications are shown on the Drawings.

14. Question: Dwg 04-A505, Wall Cowls. Please advise, should there be closure plates welded on the two sides of cowl (act as stiffeners).

Answer: The cowl is to be backed by an HSS steel frame per structural detail 5/04-S503.

15. Question: Drawing 01-S102, 01-S103, 01-S104 and 01-S105, General Notes 2 reads Lower Finished Floor EL 7074. Drawing 01-S301, 01-S302, and 01-S303 indicate LOWER LEVEL EL 7047. Please advise correct Lower-Level Floor Elevation.

Answer: The correct elevation for the Lower Level is 7047.00.

16. Question: Drawing 04-A505; 2/04-A505 WINDOW HEAD DETAIL HSS TUBE FRAME AND CORTEN STEEL; COWL WELDED TO FRAME. Please advise as to whether the support HSS/Angel Frame at back side also needs to be Corten steel. Please advise the sizes and thickness for the HSS and Angle.

Please advise the specifications for HSS and Angle.

Answer: Material may be A500 and A36 steel for HSS and angles, respectively. See Specification Section 05 50 00 for material grade requirements. Connection angle to be designed and provided by steel stud manufacturer per Detail 5/04-S503, or other delegated designer at contractor’s option. HSS size is specified on Detail 5/04-S503.

17. Question: Is there a schedule or list(s) of valves required for this project? Or are the valves only identified within the mechanical drawings?

Answer: A Valve Schedule for process valves is provided at the end of Specification Section 40 05 51 Valves – Basic Requirements. Note which valves are included in the schedule as described on Page 7, Lines 23-29.

18. Question: On the last page the Support facility was awarded under a separate package GRCA 250176? Can you please let me know who was awarded this contract and for how much?

Answer: The first GRCA 250176 Support Facility solicitation was cancelled and then combined with this current solicitation 140P2022R0100.

19. Question: I wanted to confirm that we can use key subcontractors' project experience for one or more of the 3 relevant projects that we can submit in relation to the project experience/past performance sections? Assuming that there is a teaming agreement in place, is it acceptable to use their experience? The RFP language seems to suggest this but I wanted to clarify.

Answer: This is allowable if the Prime can demonstrate that they have worked together with the subcontractors on past projects.

20. Question: The answer for Question 4 on Amendment 2 states, “Site Visits for areas not open to the public will be considered by appointments on an as-requested basis”. Can we be provided with sign-in sheets for the additional site visits requested on an as-requested basis?

Answer: Email timothy_burger@nps.gov and edwin_berry@contractor.nps.gov with proposed dates and locations you would like to visit and we will work with the Park on what they can accommodate within those dates

21. Question: Based on the unique and complex nature of this project, would the National Park Service consider extending the time frames for relevant completed projects from 5 to 7 years? Likewise, can contractors include up to 5 projects to better illustrate their experience with the 'unique construction elements' designated in the solicitation? (i.e. potable water systems, high voltage power systems, helicopter operations) Answer: Contractors may provide relevant completed projects within the past 7 years. Contractors may include up to 5 projects to better illustrate their experience with unique construction elements.

22. Question: Specification Section 8 46 00 FIRE DETECTION AND ALARM; 1.1 SUMMARY; Last sentence of paragraph “The phantom Ranch WTP will not be provided with a fire alarm system”. Drawing 04-F001, CODE DATA TABLE; 2.7 FIRE PROTECTION SYSTEMS; FIRE ALARM AND DETECTION – NOT REQUIRED. Drawing 04-E107, Keynote 9; THE FIRE ALARM SYSTEM IS A DELEGATED DESIGN WITH PERFORMANCE SPECIFICATIONS. A FIRE ALARM AND DETECTION SYSTEM IS BEING PROVIDED TO SERVE THE WATER TREATMENT FACILITY.…THE INSTALLATION WITH OTHER TRADES. Please advise if Fire alarm system required at Phantom Ranch.

Answer: Keynote 9 on Sheet 04-E107 should be omitted. There is no fire alarm system at the Phantom Ranch WTP.

23. Contracting Officer’s Note: the following revised drawings, 03-C131 REV1 2022-08-22, 03-C137 REV1 2022-08-02, 03-C405 REV1 2022-08-02, 03-E503 REV1 2022-08-02, 03-E504 REV1 2022-08-02 are included in this Amendment.