36E77618R0104-0002001.pdf

36E77618R0104 MODERNIZE EXISTING CHILLERS – IOWA CITY TECHNICAL QUESTIONS AND VA RESPONSE TRACKING SHEET

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QUESTION GOVERNMENT RESPONSE

1. 9-12-18 9-26-18 The following specification sections are listed in section "00 01 10 – Table of Contents", but were not provided in the document, “36E77618R0104 ATTACHMENT 2 - Final Specs - Chillers - 08-14-2018.pdf”:

00 01 15 – List of Drawing sheets 22 08 00 – Commissioning of Plumbing Systems 23 25 00 – HVAC Water Treatment 26 05 13 – Medium-Voltage Cables 26 05 41 – Underground Electrical Construction 26 08 00 – Commissioning of Electrical Systems 26 11 16 – Secondary Unit Substations 26 13 13 – Medium-Voltage Circuit Breaker Switchgear 26 13 16 – Medium Voltage Fusible Interrupter Switches 26 20 11 – Isolated Power Systems 26 22 00 – Low-Voltage Transformers 26 23 00 – Low-Voltage Switchgear 26 23 13 – Generator Paralleling Controls 26 24 16 – Panelboards 26 24 19 – Motor Control Centers 26 25 11 – Busways 26 27 26 – Wiring Devices 26 29 11 – Motor Controllers 26 29 21 – Enclosed Switches and Circuit Breakers Please provide the missing spec sections if they are a requirement of this solicitation.

a.) The drawing list is located on the drawings only. See sheet 7-MT.1 b.) The spec sections referenced in this item are not part of the contract and were not included in the specifications.

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2. 9-12-18 9-26-18 Specification section “09 67 23.60 – Resinous Urethane and Epoxy Mortar Flooring”, “22 13 29 – Sanitary Sewerage Pumps”, and “25 10 10 – Advanced Utility Metering System,” were provided in the “36E77618R0104 ATTACHMENT 2 - Final Specs - Chillers - 08-14-2018.pdf” document but were NOT listed in spec section "00 01 10 – Table of Contents".

Please confirm that “09 67 23.60 – Resinous Urethane and Epoxy Mortar Flooring”, “22 13 29 – Sanitary Sewerage Pumps”, and “25 10 10 – Advanced Utility Metering System”, are a requirement of this solicitation.

a.) The spec sections listed are ALL a requirement of this solicitation.

3. 9-12-18 9-26-18 The following plan pages were listed on the sheet index but were not provided in the document, “36E77618R0104 ATTACHMENT 3 - Drawings - Modernize Existing Chillers - 05-11-2018.pdf”:

7-E1.0 Electrical Legends and Notes 7-ED.1 – Electrical Demolition Plan 7-ED.2 – One Line Diagram Demolition Plan 7-E1.1 – New Electrical Plan 7-E1.2 – New One Line Diagram 7-E2.1 – Electrical Details Please provide the missing plan pages listed on the sheet index.

a.) The electrical drawings have since been issued. Reference amendment 0001, which was posted on 9/17/18.

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QUESTION GOVERNMENT RESPONSE

4. 9-17-18 9-26-18 We received the above project but are missing several sections listed in the table of contents:

01 74 19 22 08 00 23 25 00 26 05 13 26 05 41 26 08 00 26 11 16 26 13 13 26 13 16 26 20 11 26 22 00 26 23 00 26 24 16 26 24 19 26 25 11 26 27 26 26 29 11 26 29 21

These specification sections are not part of this project.

5. 9-17-18 9-17-18 Is there an approved alternate for the following pumps found on drawing sheet 7-M3.1:

7-P-1 7-P-14 7-P-15 7-P-16

Refer to sheet 7-M3.2, Fluid Pump Schedule - CHANGE the pump selections to the following: Pumps 7-P-1, 7-P-14, 7-P-15 and 7-P-16 shall be equal to Armstrong model 4300, 10x10x13, 2000 GPM @ 40 ft. hd., 11,58" impeller, 79.2% efficiency, 1200 RPM, 30 HP, 460V-3PH. Pumps shall be non-overloading along the entire curve.

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6. 9-18-18 9-26-18 The following electrical spec sections are missing:

26 24 16 – Panelboards 05-14 26 24 19 – Motor Control Centers 08-14 26 25 11 – Busways 01-17 26 27 26 – Wiring Devices 01-16 26 29 11 – Motor Controllers 08-14 26 29 21 – Enclosed Switches & Circuit Breakers 01-17

Please advise.

These specification sections are not part of this project.

7. 9-18-18 9-26-18 There are no conduit or wire sizes shown on drawings.

Are we supposed to base conduit and wire size by feeder breaker?

Reference attached Updated Riser Diagram Sheet 7-E1.2. Posted with amendment 0002.

8. 9-18-18 9-26-18 There is no new primary HV switch sown before the new transformer, existing transformer has one, is this correct?

Yes, the primary overcurrent device is located in the penthouse above.

9. 9-19-18 9-24-18 Reference solicitation page 12 of 56, paragraph D.a.1., bullets 1 & 3: The first bullet says to “Provide the Project Title and Description” and the third bullet says to “Provide a description of the scope of work.” We are clear about what you want for the third bullet, but we are unclear about what we are to provide for the first bullet. Can you please clarify your expectations for the “description” in the first bullet?

Project title and description refers to projects that your company has completed in the past, which are similar in size, scope, and complexity to this

RFP.

EXAMPLE: this project is titled “Modernize Existing Chillers”.

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10. 9-19-18 9-24-18 Reference solicitation page 16 of 56, paragraph 2.15, FAR 52.209-13. This FAR reference certification that is not included in the Representations & Certifications section. Do you want us to include that completed FAR clause as a part of the Reps & Certs?

Yes, it may be included as a part of the Reps & Certs.

11. 9-20-18 9-26-18 Reference solicitation page 13 of 56, paragraph 3.

“Volume I, Element 3, Key Personnel Experience.” We are told to provide résumés for the Project Manager, On- Site Superintendent, and designated Competent Person/Safety Point of Contact. As a cost-saving measure to the VA, if a single individual is fully qualified for both positions, may we use that person to fulfill the roles of On-Site Superintendent and Competent Person/Safety Point of Contact?

Yes, a single individual can fulfill the roles of On- Site Superintendent and Competent Person/Safety Point of Contact.

12. 9-21-18 9-26-18 We cannot find a specification on the side stream filter. Can you please provide one?

Reference attachment titled “Side Stream Filter Specifications”. Posted with amendment 0002.

13. 9-21-18 9-26-18 I think the side stream filter is undersized talking to several vendors, we think it should be a 10 HP unit instead of a 7.5 HP unit. Can you please evaluate this?

Bid as scheduled with a 7.5 HP pump motor.

14. 9-10-18 9-24-18 Tennant Company Products is requesting a product substitution for the Seamless Resinous/Epoxy Flooring.

Reference attachment titled “Approved Epoxy Floor Coating Substitution Request”. Posted with amendment 0002.

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15. 9-18-18 9-24-18 We would like to request that the following manufacturer(s) be named as ‘or equal’ for bidding purposes on those items listed below being proposed for the subject project.

· Spec. Section 23 64 00 Packaged Water Chillers:

Daikin Magnitude – Magnetic Bearing Centrifugal Chiller WME.

· Spec. Section 23 64 00 Packaged Water Chillers:

Daikin Centrifugal Chiller WSC/WDC.

The A&E ATIGROUP has confirmed that Daiken chillers can be listed as an approved alternate.

Reference attached zip file titled “Approved Daikin Substitution Request” Posted with amendment 0002.

16. 9-24-18 9-26-18 23 64 00 – 1.6 – paragraph C calls for efficiency ratings WITHOUT tolerance. Unit used in design included tolerances. Do we need to hit efficiency numbers on schedule WITHOUT tolerance? Or change spec to industry standard tolerances as unit in basis of design has.

Match efficiencies and tolerances of the “basis of design” chiller.

17. 9-24-18 9-26-18 23 64 00 – 2.1 – paragraph E does not list sound performance. Will there be a sound requirement for this project?

Match sound performance of the “basis of design” chiller.

18. 9-24-18 9-26-18 23 64 00 – 2.1 - Paragraphs J and K call for design working pressure of 300 psig. The working pressure of the evaporator and condenser of the machine used for basis of design is 225 psig. Is 225 psig acceptable?

Yes, 225 psig working pressure is acceptable.

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19. 9-24-18 9-26-18 23 64 00 – 2.1 – Paragraph D calls for efficiency complying with FEMP. Assume that efficiencies listed on schedule pages meet this requirement? If not, please forward requirements as we are not aware of this standard.

Match efficiency listed on the chiller schedule.

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