COTHEN Engineering Project LED Tower Lights

To all interested Parties:
The purpose of this modification is to notify interested Parties of the Government response to Vendor 3rd set of questions.
Please see attached document.
Please be advised there are four(4) questions and four (4) responses in this amendment as follows:

Vendor Question

CBP Answer

1

1) Was a underground counterpoise system installed with this antenna system? If so, is it lower than the required 24" cable bury depth?

There is current no counterpoise around or near any tower. The ground system consists of a single electrode and conductor for each tower.

2) Due to the potential of RF issues in lighting cable, we would like to utilize the double shielded flash head cable previously approved but install in 2" PVC conduit instead of direct bury. This will allow future maintenance of the cable should it get damaged from lightning strikes, etc.

Either method is acceptable. New conduit can be installed or direct bury utilized.

3) The indicated existing conduit runs on Page16 show a single conduit run from the East tower over to the West tower and then continues back to the shelter. Confirm there are in fact 2 conduit runs back to the shelter- one from each tower as the SOW specifies terminating into the shelter floor. If in fact only one conduit in the shelter there would have to be additional work fitting conduit runs together.

There are two conduits, one from the shelter interior to each tower. There are no as-builts available, so the worst case routing (most length) was detailed. The conduit from the shelter to the farthest (east) tower may have a more direct route and be shorter in length.

4) The SOW (Para 4.2) indicates the existing conduit at each tower is located behind the anti-climb panels. Were the existing tower end conduit runs embedded in the concrete foundation. This would provide protection for the lighting system cables behind the anti-climb panels however if the existing conduit is presently embedded the new installation would require other methods to provide this level of protection for the cables.

The conduits are not imbedded in the concrete. A box-like cap was fabricated and welded to the anti-climb shield. This box is open towards the ground. The conduits run up from the ground and are covered by the box. It is a 4-sided box with one side towards the concrete footer and the bottom open to cover the conduits. It hangs over the concrete and there appears to be a few lead anchors securing it to the concrete that will have to be ground off.

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To all interested Parties:
The purpose of this modification is to notify interested Parties of the Government response to Vendor 2nd set of questions.
Please be advised there is only one question and one response in this amendment as follows:

2nd Set of Questions from vendor(s)

2nd Set of Answers from Government to vendor(s)

Do both 4" UG conduit runs also have transmission lines inside the conduit. If so, what size and type of cable is being used?

They UG conduit for the obstruction lighting wiring/cabling does not have transmission lines. They are in a separate conduit.

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To all interested Parties:
The purpose of this modification is to notify interested Parties of the Government response to Vendor Questions.
Please see document attachments for further

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To all interested parties:
The government intends to purchase LED Tower Lights in strict accordance with the attached Statement of Work.

Preference will be given to a small business concern that demonstrates in its proposal explicit adherence to the technical specifications established in this RFQ's Statement of Work.

The place of performance for all work performed shall be performed at a Government site in the vicinity of Sarasota, FL. The contractor is expected to anticipate any local or long distance travel in its pricing for this activity. The Government will not pay travel costs.

The performance period for this activity shall be delivered within 30 days following the award date.

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