Q and A for duct cleaning work.docx

Scope of Work for HVAC air duct services CG STA Lake Worth Inlet *Questions*

· What is the square footage of the buildings?

Please see building diagram

· Is the the interior duct work is internally lined, the proper way to clean this without doing any damage or causing fibers to get loose is to Contact brush and vacuum (hand cleaning). Using push pull method (High Pressure Air & Negative) can damage the interior liner especially if the liner is starting to break down. Sealing the duct work will prevent any loose fibers from entering the air stream and out into the occupied space. This is all stated in the NADCA standards (NADCA.com), standards stated in bid docs to follow

Metal ducting, please see diagram

· Please verify we are not cleaning any bathroom exhaust?

Yes you will be cleaning bathroom exhaust

· Is there any drawing for all of the associated HVAC systems on the project?

Yes, please see attached

· Please verify new filters for units will be supplied by facility or contractor?

Contractor supplied

· Is a bond required for this project?

· Can the contract/task be completed at night and on weekends, will the contractor have full access to the building so the contractor can schedule their work and man power properly? Will there be any schedule conflict with the Federal employees?

During the day only between 0800-1500.

· Can the contractor work on multiple units and areas at the same time?

Yes, We can accommodate two areas at a time.

· What if the contractor finds ductwork that we are cleaning has an active air leaks at the joint of the duct or at a duct fitting, does the contractor need to seal the leak as we are working? What would the protocol be for this project? Would the owner provide a change order to the contractor to complete this work? Notify site POC, Minor repairs can be handled at the unit, we will work together on a case by case basis.

· Will the government provide a storage area for the contractor’s equipment during the performance period of the project? Garage area can hold contractor equipment

· Will the government Tech POC approve our work for each unit before we move on to other areas?

Yes, contractor will need to show a Tech POC proof of completion to include camera or digital pictures of ducting after cleaned

· Is the inspection/acceptance of project completion provided for each unit or just at the end of the project?

Each unit as completed, show Tech POC proof of completion to include camera or digital pictures of ducting after cleaned. Tech POC will be available and monitoring work.

· Does the contractor need to document and provide a form that all of our equipment has been cleaned before being allowed on site? Yes, please ensure equipment is clean and satisfactory for conducting the project

· Besides Drivers License is there any other ID required?

Only drivers license is required

· What is the size of the access panels in the ductwork for inspection and cleaning purposes?

Standard exhaust and intake vents, 10 x 10, 12x6, etc.

· Are pictures, diagrams, schematics available for the Air Duct Work for the referenced building? If so, would it be possible to provide that information?

Yes, diagram is included in the e-mail.

Responses to questions:

· Are any mechanical drawings available for the main office or shop areas? Yes, please see attached

· Is a schedule of AHUs to be cleaned with tonnage available? Please see attachment HPs.JPG

· What type of systems serve the main office and shop areas? Are they split systems, WSHPs, PTACs, FCUs, etc.? Heat Pumps, please see attachment HPs.JPG for make and model number

· Are model and/or serial numbers for all AHUs to be cleaned available? Yes please see HPs.JPG

· What type of ductwork serves the main office and shop spaces? Is it internally lined, bare metal with insulation wrapping, duct board, flex duct, etc.? Metal ducting, insulate wrapped, please see air duct diagram.

· Is encapsulation of porous internal surfaces of the AHU or ductwork included in the scope?

· Approximately how many linear feet of supply and return ductwork need to be cleaned? Please see the air duct diagram

· Approximately how many supply and return vents serve the main office and shop areas? 160 vent registers total

· Will NADCA (National Air Duct Cleaners Association) membership and certification be required for the awarded company and project manager? NADCA will be required.

· What are the requirements for cleanliness verification? On site tech rep will be available to verify cleaning. Please provide proof of cleaned duct via digital images or video as rooms are completed.

1. Is this prevailing wage? Are there wages we must follow? Yes, the DOL Wage determination document has been added to the solicitation.

1. If it safe to say we only have to clean up to 2’ around each diffuser? Yes

1. I was not able to view every single register during my site visit, however I didn’t see really any that needed replacing. Are we to assume if we cannot get them clean then we can suggest replacement? We are aware of approximately 15 that will be highly likely in need of replacement

1. Was there any testing done on the suspected mold? No formal testing, there are visible signs of mold are present that multiple companies have pointed out.

1. Are we to replace HVAC filters? If so do you have a list of sizes or a filter schedule? Yes, Please see HVAC Duct diagram. We do not have schedule/list of sizes.