Questions_set_1.docx

Questions set 1

1. On a few sites, a directional bore is required in a section of trench that calls more than (2) conduits. This is specified on the plans as sheet note #1 and #3. However, the directional boring sheet note, #6, requires (2) 2" conduits for all bore locations. If the bore is within a section of trench that is specified as a #1 or #3 section, we will need to add additional conduits to the bore to meet that particular section's requirements.

Notes 1 and 3 are for trenching conduits and note 6 are for horizontal boring for a total of 2 conduits. In note 6, I believe we mistakenly show

(2) 2" conduits when it should be (1) 2" conduit spare that ends at pull boxes and (1) 1" conduit that continues in note 4. Note 13 also shows (1) 2" spare conduit and (1) 1" conduit. After reviewing the drawing boring detail, changes to the detail should be made to make it more clearer.

Questions set 2

1. Drawing 4 (Bravo-01) and drawing 12 (Juliet-01) both show an anode well at the new rectifier location. No other sites have this. Is the well requirement correct?

Yes, MAF B-01 , J-01, LF G-08, H-05, H-09, H-10, I-07 M-09, N-08, See Spec General Section 01 00 00 1.1.1

2. Should we figure an hour for entry/exit at each site?

We typically say 30 mins on/off

Yes, will be amended/ revised to omit painting conduit and fittings.

5. Can the Quality Control Person also be the On Site Supervisor and have other duties?

Yes they can have other duties

Response Contractor are responsible for locates. See Spec Section 312100 1.4 / AF Form 103

9. Which sites are wet and which are dry from past installations?

Need more clarification on question. However, data from previous 2005 installation suggest an average of 1 out of 7 reference cells are wet.

10. Is the engineer required to be on site or just on staff?

Response Yes , amended to clearly state PE / NACE Engineer to be on site at all times during construction and testing. See Spec General Section 264000 1.3

11. Will the Airforce supply a disposal site for the drill mud and cutting/ tailings?

No, Contractor not government responsible for disposal site. See Spec Section 33 05 23 1.3 C, E / 3.5

12. Would it be possible to drill/fill 2 wells/2 sites, then leave till the crews are complete at them, to come back? We may be able to save travel costs this way.

Contractor shall only work at one (1) site a time. See Section 01 00 00 1.1.1

13. This is a large project and a lot of material will have to be purchased right away. Will stored material be paid on this job?.

Prefer not to, but will be determined on a case by case basis. The cost per site would be minus supplies already paid if that’s the route.

14. As there is no pre-bid or site visit, will all questions and answers be posted on FedBizOpps?

Yes

15. I know that we will have to haul water to the LF’s, But are there any MAF’s that we can use the existing water?

MAFs and LFs do not have resource capacity to provide onsite water for Contractor's large construction. See Spec Section 33 05 23 1.4 G

Questions set 3

1. Is there a mistake in the specifications for the amperage needed?

Should it be 30A 115V instead of 3amps 115V?

- Yes, 30 amps, amended to 30 amps.

2. Universal Rectifier (spec'd in manufacturer) is telling us that GFIC will not work on 208V service. Is the standard duplex outlet acceptable? Is there an option to have a GFIC at the Panel breaker?

Per Universal Rectifier:

RECTIFIER EXCEPTIONS:

1. The GFCI outlet is not available when a rectifier is running on 208 VAC input. We have quoted the standard duplex outlet. Response - GFIC at Panel Breaker?

2. Front door will have two separate viewing windows, one for DC Volt meter and one for DC Amp meter. Each viewing window will be 2" diameter and there will be one clear 1/8" x 3" x 12" Polycarbonate, mounted on the inside of the door. The viewing window will not have a lid. Response - should have lid for protection

3. The breakers are fully magnetic, not thermal with instantaneous trip.

Response - Breakers fully Magnetic okay.

4. The door hinges are our standard hinges, they are not fast/spun pin type.

Response - Standard hinges okay..

J-BOX EXCEPTIONS

EXCEPTIONS

1. The door hinges are our standard hinges, they are not fast/spun pin type Response - Standard hinges okay

2. We are not furnishing the label on the inside of the door for reference cell termination. Reponses - Need labels inside of the door for reference cell termination