Addendum No. 1 ITB 25-FAC-0068 Chiller Replacement @ Dr. Milton Becnel (1.15.26)

Agency:	New Orleans Public Schools
State:	Louisiana
Type of Government:	State & Local
NAICS Category:	238220 - Plumbing, Heating, and Air-Conditioning Contractors
Posted Date:	Jan 15, 2026
Due Date:	Jan 20, 2026
Solicitation No:	25-FAC-0068
Original Source:	Please Login to View Page
Contact information:	Please Login to View Page
Bid Documents:	Please Login to View Page

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PIVOTAL , LLC

1515 POYDRAS STREET, SUITE 1150

NEW ORLEANS, LA. 70112

(504) 799-3653

ADDEDNDUM # 1

CHILLER REPLACEMENT @ DR. MILTON BECNEL SCHOOL

Owner: Orleans Parish School Board (OPSB)

Program Manager: Manning Architects (Clarence Eugene III – Sr. Project Manager)

Project #: ITB25-FAC-0068

Date: 01/15/2026

Project Location: 7301 Dwyer Rd, New Orleans, LA. 70126

POR: Pivotal Engineering LLC, Bassam Rossi Mekari, PE / 225-205-3490

I- Answers To Questions/Emails:

Email Questions:

1. It looks like we will have to open up multiple sections of this roof to remove old columns ( legs of the

existing platform ) and install new legs of the modified platform? This will be very costly and invasive (

water intrusion, roofing subs ect). Also, to preform these modifications, no contractor will be able to use 1

of the existing chillers to continue to cool the building during the renovation process. Temporary chiller

will be Mandatory down on the ground to preform this work. I would like this noted if you agree with this

so all the other contractors include the pricing into there bids as well. All old equipment and piping must be

removed in order to preform this work on S100 drawing. Also, if roof work is required we will need to

know who the roofing contractor is that installed this roof and if its still under warranty, if not , we need to

know what type of roof is currently there to tell the new roofer so he knows what to price accordingly.

Also, you mentioned flushing of piping to be imperative, is there a chemical requirement or spec to add

new chemicals , new pot feeders any this of this nature to give more info on this subject? Lastly, the current

piping is Aquatherm piping and is no longer obtainable. We will be allowed to use sch.40 steel pipe in

place of old Aquatherm piping? We can transition from the desired tie in point on the drawings.

Answers & Clarifications:

1- School has to remain conditioned during construction. The contractor may utilize existing

chillers if possible or rent a chiller for temporary cooling needs.

2- Roof is metal deck with overwide flange beams.

3- The roofing contractor has to be certified by Soprema and need to include his/her certification as part of the

roofing submittal (see attached roof warrantee – Appendix D)

4- All work is performed on the roof level and above as per plans. A mechanical platform for new Chillers

has to be built above the roof (new base is longer and narrower than existing). Plan 1 shows the work

Page 2 of 4

needed for the existing roof framing and Plan 2 shows the work needed for the platform. If a contractor

has a different means and methods for modifying the existing platform, submit to engineer for approval.

5- If existing Acquatherm co. is no longer in business producing plastic pipe, then contractors can use

compatible product from a compatible chilled water piping manufacturer such as NUPI, Interplast,

Isco etc. Contractor is responsible to coordinate and select compatible fittings to match proper sizing

(English/Metric)

Additional Piping Information:

Modify the specification section 23 20 00-HVAC Piping indicated in as follows:

(Black is existing text, red/Bold is the new text)

2.2 PIPES AND TUBES

A. Chilled Water Piping

Larger than 2” Steel Pipe: ASTM A53/A53M, Grade B, Schedule 40, black., Malleable iron or

forged steel fittings, threaded or welded joints.

Larger than 2” PP-R (random copolymer polypropylene): ICC-ES PMG-1244, IAPMO

FILE 9840, ASTM F2389Socket fusion connections, instabranch and instaheader branches.

2” and below Copper Tubing: ASTM B88, (ASTM B88M), Type L, drawn, cast brass, wrought

copper, or mechanically extracted fittings, lead free solder joints.

Below Grade PVC Pipe: ASTM D1785, Schedule 40 ASTM D2241, SDR 21 or 26 solvent weld

joints.

6- Flushing of existing water loop piping: Water shall be treated as per AWT standards by a qualified

water treatment specialist. No water allowed to enter new chillers without flushing the system. Use Start

up strainers with manufacturers’ recommendations for screens micron size. Some typical values for

closed loop Chilled Water Systems (or follow manufacturer guidelines if more stringent):

a. Ph 8 to 10

b. TSS < 10 mg/l

c. Turbidity < 10 NTU

d. Iron < 0.3 mg/l

e. Oil/Grease ND

f. Chlorides – as recommended by manufact.

7- Substitutions Information:

As per the front-end bid documents in section 4.3, the following guidelines shall be met:

“4.3 Substitutions:

4.3.1 The materials, products and equipment described in the Bidding Documents establish a standard

of quality, character, type, style, function, dimension, and appearance desired. Equivalent products may

be acceptable, as stated in La. R.S. 38:2212.T(2). It shall be the responsibility of the Architect/Engineer to

determine if a proposed substitution is equivalent. No substitutions shall be allowed after bidding, except

as may be provided in the Contract Documents.

4.3.2 No substitution will be considered unless written request for approval has been submitted by the

Proposer and has been received by the Architect/Engineer at least seven (7) working days prior to the

deadline for submission of Bids. (La. R.S. 38:2295.C) Each such request shall include the name of the

material or

equipment for which it is to be substituted and a complete description of the proposed substitute including

model numbers, drawings, cuts, performance and test data and any other information necessary for an

evaluation. A statement setting forth any changes in other materials, equipment or work that incorporation

of the substitute would require shall be included. It shall be the responsibility of the Proposer to include

in his proposal all changes required of the Contract Documents if the proposed substitution is used. Prior

approval is given contingent upon supplier being responsible for any costs which may be necessary to

modify the space or facilities needed to accommodate the materials and equipment approved.

Page 3 of 4

4.3.3 If the Architect approves any proposed substitution, such approval will be set forth in an

Addendum. Bidders shall not rely upon approvals made in any other manner.”

The design/dimensions/roof modifications/electrical power distribution are based on Trane Chillers as

scheduled in our bid documents.

No approved equipment substitutions

III- Tax Exemption

This project is tax exempt

IV- Cost Estimate

Opinion Of Probable Cost = $1,275,000.00

V- General Discussions During Pre-Bid Conference

1- Logistics/Staging/School Entry explanations. Sign in log for all workers. Safety discussions about

staging for Cranes and equipment. Qualified/certified operators required for heavy equipment.

Stand by Chiller rental. Extreme caution during roof work.

2- Post Bid Documents submission discussions.

3- GC is responsible for obtaining Addendum #1

4- During phasing of the work, GC is responsible to ensure that school is conditioned at all times.

5- All CWS/CWR lines shall be properly flushed using chemicals/start up strainers prior to

connecting new Chillers.

VI- Post Bid Document Checklist From OPSB

Attached Appendix A

VII- School Calendar

Attached Appendix B

VIII- Prebid Meeting Agenda

Attached Appendix C

IX – Roof Warrantee

Attached Appendix D

Page 4 of 4

X– Attendees Sign In Sheet

Attached Appendix E

End of Addendum #1

Bassam Rossi Mekari, PE - Principal

Bassam Rossi Mekari

Pivotal Engineering

APPENDIX A

NOLA Public Schools

Post-Bid Document Checklist

Project Information

Project: ITB 23-FAC-0073 – Chiller Replacement @ Mary Keller Zervigon School

Bid Opening Date: Tuesday, December 16, 2025

Pre-Bid Conference Date: Thursday, December 4, 2025 3128 Constance Street, NO LA 70115

All documents are due within 10 calendar days after bid opening.

Submission Rules

• Post-Bid Documents cannot be emailed.

• Submission by hand delivery, U.S. Mail, or Express Mail only.

• NOLA-PS is not responsible for delays or lost mail; late receipt = non-responsive.

Required Post-Bid Documents

☐ Non-Collusion Affidavit

☐ Attestation Clause

☐ DBE Responsiveness Form 1

☐ DBE Responsiveness Form 2

☐ DBE Certification Checklist (Notarized)

☐ Copy of DBE Certification Letter(s) (Provide letters for any DBE firms being claimed)

☐ EDGAR Form

Delivery Address (Hand Delivery or Mail)

Mr. Jonathan Temple

Office of Business Partnerships

NOLA Public Schools

2401 Westbend Parkway, Suite 5055

New Orleans, LA 70114

This page summarizes the opportunity, including an overview and a preview of the attached documents.

Addendum No. 1 ITB 25-FAC-0068 Chiller Replacement @ Dr. Milton Becnel (1.15.26)

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