Water tank cleaning questions-final.pdf

Document Paragraph Page # Text in Question Contractor Question Government response

PWS PWS 1 N/A

1) What are the dimensions of each tank including diameter and/or height? What’s the depth of each tank? Will they also have internal and external ladders.

Building: 1407 (Potable Water Tank) Elevated 250-thousand-gallon steel tank o 32’ Tall x 36’ Dia o ~137’ Above ground surface elevation Building: 1408 (Potable Water Tank)

Ground Level 1-million-gallon concrete tank o Semi buried concrete tank o 20’ Height x 84’ Long x 84’ Wide

Building: 5252 (Potable Water Tank) Ground level 500-thousand-gallon steel tank o On grade o 32’ Tall x 51’ Dia

Building: 8076 (Potable Water Tank) Ground level 1-million-gallon steel tank o On grade o 32’ Tall x 73’ Dia

Solicitation+FA489724QC055 Submission Information N/A Can a 4WD truck and 20' trailer get up to each tank and how far away is the drainage?

Yes. Drainage is available on site within ~20’ of bottom of tanks.

Solicitation+FA489724QC055 Question N/A Is there at least a 24" access hatch on top of each tank for diver access? Yes.

Solicitation+FA489724QC055 Question N/A Is there a place for discharge to go on-site for each tank and how far away?

Yes. Drainage is available on site within ~20’ of bottom of tanks.

Solicitation+FA489724QC055 Invoice question N/A What address is used when supplying an invoice?

If awarded, please follow WAWF Clause for invoice guidance.

PWS 1.1.1 N/A

It is stated in the solicitation that the 250,000g (1407) tank is elevated. Does this mean that it is on legs?

It is elevated on support legs. ~137’ above ground level.

PWS N/A

For the repair to the vent our standard repair for that would be grinding out the corrosion, bolting a backing plate to the affected area, recoating with potable safe two-part epoxy and then painting to match the exterior roof color. This method does not require welding, would this method be accepted?

Yes, but the government will require shop drawings, specifications, and other documents showing the exact materials and sizes used.

General question N/A

1.During the cleaning process does the water discharge need to be filtered through a sediment bag and or drain nearby or can we discharge directly on the ground? 2.

Does the water have to be de-chlorinated.

No water can be directly discharged to nearby ground surface. The water will not have to be de-chlorinated.

The water will naturally dechlorinate while running off.

General question N/A How long is the required unit specific OPSEC training and is that done onsite or online?

OPSEC training will be done onsite during the preconstruction meeting approximately 1 hour.

PWS N/A

In the deliverables I did not see anything about a report only the DVD inspection, our standard deliverable is a detailed report with high-definition photos of all components and a Video inspection of the internal of the tank. Is this the deliverable that you are wanting?

Yes.

Period of performance question N/A Approximate last date of cleaning & inspection? 45 days after Date of Contract (ADC).

General question N/A Is each tank hatch opening 20” X 20” or larger without obstructions that would prevent entry?

Yes.

General question N/A

Will the government provide more details of the steel repairs that will need to be completed?

the size of the neck, how it connects the aluminum hood, etc.…..?

Bolted connection to steel tank. Hole through steel is approximately 2”x7” and needs to be repaired to prevent intrusion or outside contaminants.

PWS N/A

The PWS states the requirement for corrosion repair of the steel reservoir (Building 1407). Since this portion of the project requires specific credentials to complete, Will the government allow a subcontractor to be used for that scope of work?

Yes.