EROS_Cooling_Towers_Questions_and_Answers_0002.pdf

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EROS Construction Services
Solicitation number
140G0123R0007
Issued by

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This document contains questions and answers related to a solicitation for cooling tower repairs and upgrades at the United States Geological Survey facility in Sioux Falls, South Dakota. The solicitation seeks proposals for installing a fourth variable frequency drive and relocating existing VFDs to allow the cooling towers to operate fans at 10% speed or lower. Questions covered the roof warranty, approval of specified equipment manufacturers, the opportunity for a site visit, availability of documents, and an extension to the proposal due date. The response date was extended to April 14, 2023 at 2:00PM Eastern Time in order to allow suppliers additional time to provide quotes and lead times.

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EROS Construction: Cooling Towers

RFP# 140G0123R0007

Questions and Answers

1. Could you provide information on the roof warranty and contractor that services the warranty?

Answer: The roof was installed in the Summer of 2010 and is a Sika Sarnafil product. It has a 20-year warranty per our contract. I cannot find solid information, but ARS of Sioux Falls, SD is likely the installation contractor.

2. I would like to formally request approval for the following manufacturers on the EROS

Construction Services in Sioux Falls, SD with project # 1936.00.

Spec. Section or

Drawing

Reference

Equipment Description Approval Requested For:

230700 HVAC Water Pumps Grundfos

230110 Pump Suction Diffusers Grundfos, American Wheatley

230110 Strainers Grundfos, American Wheatley

230110 Automatic Air Vent Grundfos, American Wheatley

230110 Circuit Setter/Balancing Valve Hays, HCi

230110 Auto Flow Control Valves Hays, Hci

230110 Ball Valves Hays, Hci

230110 Butterfly Valves, Swing Check

Valves, and Spring Check Valves Hays, Hci

230110 Triple Duty Valves Grundfos, American Wheatley

230110 Relief Valves Grundfos, American Wheatley

230110 Flexible Connectors Hays, HCi

Answer: The Government does not answer this question. It is up to the contractors to find the parts that meet the needs of the Government based on the Statement of

Work. The contractors can choose any manufacturer they would like for bidding purposes. Once the contract is awarded, the awardee with provide Submittals to the

Contracting Officer Representative (COR) for approval.

3. Is there a pre-bid site visit scheduled for this project?

Answer: The Site Visit was conducted on March 23, 2023, at 10:00AM Central

Time. There will not be another site visit.

4. Is there a product that was used as the basis of design?

Answer: No

5. The documents provided in the solicitation and their content are the only documents for this solicitation, correct?

Answer: Yes, all of the documents were provided.

6. Can the due date be extended until 14 April to allow suppliers time to provide quotes and lead times to us?

Answer: The RFP will be extended to April 14, 2023 at 2:00PM Eastern Time

7. Where should the fourth VFD be located?

Answer: The fourth VFD and existing VFDs need to be located and relocated close enough to the cooling towers to operate the cooling fans to operate at 10% speed or lower. The current location does not allow for the current cooling fans to be operated below 25%.

File details come from the government source that posted it. Updated .