Amend 0001.pdf

N40085-26-R-9000 Amendment 0001

CONTINUATION SHEET

1. Return the site to the original condition by installing curb, gutter, and asphalt as needed. The details from when it was built are these below:

2. QUESTION: Can the contractor use the existing manhole riser and top that are currently onsite?

ANSWER: Yes, the contractor can use any materials (i.e. concrete manhole risers) the Base purchased that are currently on site.

3. QUESTION: Can the government provide the flow rates for the 2 gravity lines and force main that are in flowing into the manhole to be replaced?

ANSWER: See below for estimated flow rates:

1. main 6,000 gallons per day *Note - flow was adjusted to support this contract

(see #5 below).

2. 100,000 gallons per day

3. 10,000 gallons per day

4. QUESTION: Will the new manhole need to be epoxy coated? If so, please provide specs for coating requirements.

ANSWER: Yes. This can be performed onsite. There should be no need to transport materials off Base to complete this task.

5. QUESTION: gate valves to isolate flow from the manhole to be replaced?

ANSWER: In preparation for this contract, Base Utilities rerouted flow from lift station VL342 main can be shut down long enough to set up a temporary pump around.

6. QUESTION: If tee and valves are installed on force main for bypass purpose, once completed, can the valve be plugged and left in place? Or will we need to removed the tee and valves and install section of new piping in force main?

ANSWER: The Base did not request a tee and valve, just that the force main be temporarily bypassed above ground to the downstream manhole. Note Upon completion of construction, the force main should be placed back into service in its original operating condition.

7. QUESTION: Will the new sections of DIP pipe and fittings need to be P-401 lined?

ANSWER: Yes.

8. QUESTION: Is the government okay with using road ramps for bypass piping crossing roadway?

ANSWER: Yes.

9. QUESTION: Base utilities will clean out sewer lines before bypass is removed and prior to putting the lines back in service.

ANSWER: Yes, Base Utilities respectfully requests 1 day to clean gravity lines while the manhole is bypassed. No assistance is required from the contractor on this task.

10. QUESTION: Will redundant bypass pumps need to be provided in case the main bypass pumps have an issues?

ANSWER: The contractor should ensure back-up pumps are available and on standby in the event bypass pumps fail.

11. QUESTION: Will the road closures be allowed?

ANSWER: Contractor will need to provide an approved traffic control plan. Access to adjacent facilities and associated parking must be maintained at all times.

12. QUESTION: Will the Manhole need to be coated? If so, what type of coating is required?

ANSWER: Yes, epoxy coating is preferred. See question #4 above.

13. QUESTION: What are the peak flow rates for each pipe entering the manhole?

ANSWER: Information provide above in #3 are peak flow rates for the three lines feeding C Street manhole.

14. QUESTION: Is there invert elevations that can be provided by the government?

ANSWER: Rim: 21.91 approx. 7.93 / : 10.26 / inv out unknown. Contractor should verify inverts in the field.

15. QUESTION: What is the thickness of the asphalt road that needs to be repaired? Can a specification be provided?

ANSWER: .

16. QUESTION: What manhole are we to use for the bypass discharge?

ANSWER: Use the next manhole downstream to discharge into.

failed manhole to the Southeast.

17. QUESTION: What is the water table at the site?

ANSWER: The exact water table at the site is unknown. Based on nearby reports from previous projects in the area, expect the water table to be within 4-

18. QUESTION: We are requesting additional time for bidding the work as discussed in the site visit.

ANSWER: The proposal due date is moved to Wed, 29 October 2025 at 2:00PM.

19. QUESTION: Will the government will need 1 day to vacuum the existing lines as discussed?

ANSWER: Yes, see #9 above.

20. QUESTION: From pre-cast concrete sub: We are missing the necessary information to quote this project. Can you please send over updated plans, and we can work on a quote?

ANSWER: There are no design drawings for this emergency repair. See attached drawing(s) for reference.

21. All other terms and conditions remain unchanged.