6973GH-20-R-00085 Amendment 0005 Questions and Answers.docx

QUESTIONS & ANSWERS ON SIR 6973GH-20-R-00085

HVAC System Upgrade at the AGS ASR Facility located in Augusta, GA

1. Is there an existing DDC system that the new equipment will interfere with via Bacnet protocol?

a. The existing control system will be completely removed during this project. There will be nothing to interfere with.

2. Could you provide the length and breadth of the concrete pad?

a. A very rough estimate taken from an overhead photo measures about 12’ x 14’ for each unit. The actual dimensions will need to be field verified.

3. What is the distance from electrical panel DP? To the existing 2 units and also to the temporary unit?

a. Panel DP1 is on the opposite wall of the facility. This is roughly 50 linear feet away from each unit. The temporary unit will likely sit at least 55 – 60 feet away from the panel DP1.

4. Drawing E003 note 1 says to feed the temporary a/c from each of the ECU feeds as you replace them. E004 single line diagram says to feed the temporary a/c from panel DP-1 and when complete label the 40a breaker spare. Which drawing supersedes?

a. Both drawings are correct. The attempt is to phase out one unit at a time, while keeping a pad-mounted RTU and the temporary available at all times. In the first phase unit 2 and the temporary will run while unit 1 is removed. The second phase will involve the new unit 1 running along with the temporary serving as backup while unit 2 is removed. Once both primary units are replaced, the temporary unit will be removed. Then the 40A breaker used for connection to the temporary will be labeled as “spare”.