Questins and Answers Water Tanks 2.pdf

Clean Elevated Water Tanks Questions and Answers #2

1. Remove up to 12 inches of sediment from the floor plates and the remaining sediment on the side plates of all six elevated water tanks – Has this sediment been tested, is there any type of contaminant that will require special disposal?

A: There is not any contaminant that will require special disposal.

2. Install slider fall protection to the water access ladders of all six tanks – Does this need to be cable style or aluminum track? Do they need arrest assemblies or just the ladder mount?

A: Slider fall protection needs to be aluminum track. No requirement on arrest assemblies or ladder mount.

3. Label all six water access hatches as “confined space entry” areas – How many hatches are on the towers?

A: There is one hatch per tower, so six hatches in total.

4. Label the manway access hatch on Tank 2 as a “confined space entry” area – How many man ways are on the towers?

A: One manway access hatch on Tank #2. Photo included in 2017 ROV Inspection Photos.

5. Install keyed locks to all six water access hatches – Is there a specified lock? Is Owner providing lock?

If no, do locks need to be keyed specifically to another lock?

A: Removed requirement for keyed locks from Scope of Work.

6. Replace 30”x30” water access hatch on tank A. – I’m assuming this is a 30x30 square? If not, please confirm?

A: Mistake on my part. Water access hatch on tank A is 30” diameter circular hatch. Photo of the hatch will be included in 2017 ROV Inspection Photos that will be posted at the same time as these answers. Scope of Work will be updated.

7. Install new bulb to aircraft warning lights on tank B and tank C – Assuming these are dual obstruction light, do you require standard filament lights, or LED?

A: Install of new bulbs to aircraft warning lights has been removed from the Scope of Work.

8. Replace two top rungs on water access ladder on tank #1 – Are these rungs standard ¾” diameter?

Are they smooth and serrated?

A: Yes, these rungs are standard ¾” diameter. Yes, they are smooth and serrated. Picture included in ROV Inspection.

9. Install new guide cables to the water level float for tank B – What size cable? What lengths? What’s the attachment type? Are these half gauges or full gauges? Are the guides coated?

A: Guide cable specification will be left up to the contractor.

10. Remove water level debris from the floor plates of tank #1 – Would this not be done during Item #1?

A: Removed this requirement from Scope of Work.

11. Where did the numerical and alphabetical tank labeling system derive from and is there any map that shows labeled tanks?

A: Can’t provide map of labeled tanks until contract is awarded.

12. Is it possible to get the coordinates for each tank location to get a better idea of locations for travel?

A: Coordinates can’t be provided before contract is awarded. All 6 tanks are located on Pine Bluff Arsenal within a 3 mile radius.