CLIN0002D Note P3 Comments.pdf

ACQR6043431 Utility Systems Resiliency Repairs and Upgrades CLIN 0002D Note P3 Comments

There are no leaking pipes and therefore no pipe repairs to be done by the contractor. The leaking refers to water penetrating around the pipe, conduit or cable. Less often, in the case of abandoned in place pipes or conduits the water is leaking through, and/or around the pipe or conduit.

As for specific locations the following additional detail is provided:

1. Sheet S-102 tunnel area 2 at/near Ave A: STA 1+01 the piping is existing conduits and cables passing through the tunnel ceiling into the building. The repair here is to seal the original cast in place opening around the conduits and cables. The approximate size of the cast opening is 2’ by 3’ and the area is roughly 60% filled with conduits and cables.

2. Sheet S-102 tunnel area 2 at/near AVE E STA 0+30 no leak or pipe penetration requiring work was found. There is no work at this location for this note.

3. Sheet S-104 tunnel area 4 at/near AVE A STA 2+78 is plugging two abandoned electrical conduits that are approximately 4” in diameter.

4. Sheet S-105 tunnel area 6 at/near AVE G STA 2+77 no leak or pipe penetration requiring work was found.

There is no work at this location for this note.

5. Sheet S-106 tunnel area 7 at/near AVE A STA 6+00 is existing 24” pipes that are insulated. There is leaking around these pipes indicating they are not sealed to the wall. The pipes themselves are perfectly fine and do not require repair. Repair seal in accordance with the note.

6. Sheet S-109 tunnel area 10 at/near AVE B STA 2+24 is an existing 3” drain that leaks around the sides of the pipe. The pipes itself is perfectly fine and does not require repair. Repair seal in accordance with the note.

7. Sheet S-113 tunnel area 14 at/near AVE B STA 6+00 is a 1 ½” PVC drain line mounted to a pipe rack that simply opens to air. This will be investigated and handled by the Government separately. No work required at this location for this note.

8. Sheet S-114 tunnel area 16 at/near AVE B STA 1+58 are two abandoned in place 4” conduits that were plugged in some manner. Water leaks around the pipes, and may leak through them as well. In accordance with note 3 of detail B2/S-504 execute repair as shown in detail B4/S-504.

9. Sheet S-115 tunnel area 17 at/near AVE J STA 1+80 is a 3” sump pump discharge line. There is no evidence the line has problems other than needing cleaned. Repair seal in accordance with the note.

10. Sheet S-115 tunnel area 17 at/near AVE J STA 1+96 are two abandoned pipes/conduits that are approximately 16” in diameter and capped/plugged. There is also seepage in the wall between them. In accordance with note 3 of detail B2/S-504 execute repair as shown in detail B4/S-504. It may be more efficient to execute a larger repair area vice two or three smaller ones in this location.

11. Sheet S-118 tunnel area 23 at/near AVE C STA 0+30 is a 24” pipe that is capped and leaking around the pipe, and possibly through the cap. In accordance with note 3 of detail B2/S-504 execute repair as shown in detail B4/S- 504 at sufficient dimension to execute repair of wall.

12. Sheet S-120 tunnel area 25 at/near AVE C STA 2+41 are 4 conduits with cables entering the tunnel. These simply require plugging and sealing around the cables in place as there is no evidence of leakage around the conduits or through the conduits.

13. Sheet S-123 tunnel area 29 at/near AVE C STA 5+75 is an insulated 3” line that leaks around the sides of the pipe. The pipes itself is perfectly fine and does not require repair. Repair seal in accordance with the note.

14. Sheet S-133 in Chiller room north are existing air duct penetrations that are roughly 48” in diameter and one notation about piping at the room corner. The ducts themselves are perfectly fine and do not require repair. Repair seal in accordance with the note. The piping is insulated, there are no indications of any leaks or issues with the pipes themselves, nor a need to repair the pipes. Repair seal around the pipes in accordance with the note.