RFP_26-016-SN_Addendum_No._3.pdf

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TO: All Proposers FROM: Sheila Nelson, CPPB, Senior Buyer DATE: February 25, 2026 RE: RFP 26-016-SN Van Meter Substation Construction

ADDENDUM #3

Bidders are hereby notified that this addendum shall be made a part of the above-named Request for Proposal and agreement documents. The items listed below are issued to add, modify, and/or clarify the solicitation document and agreement documents. The items shall have the same force and effect as the original bidding and agreement documents, and cost involved shall be included in the bid pricing.

Bids, to be submitted, shall confirm with the addition and revision listed herein.

Return this sheet with your bid response.

I. QUESTIONS

Q1. In reference to the Wall & Gate Construction Details Drawing (#22-S- 1050) – the drawing shows a 10 ft. wall above grade and 6 inches buried.

Number 5 of the “Wall Section Notes”, says, “Wall height, above earth grade will be 8’-0” additional 6” of wall. Height required to allow for the any slight variations in grade elevations.” Question: Will it be acceptable to install with one 10 ft. wall panel that is buried 6 inches below grade? This would result in 9.5 ft. above grade and would avoid stacking two panels.

A1. Yes. It will be acceptable to install either an 8’-6” wall panel (installed with 6” below grade) or a 10’ wall panel (installed with 6” below grade).

II. CHANGES TO SCOPE OF WORK

a. REVISED SCOPE. Conditions and Requirements; Section SC.4 Contractor Office at Site of Work is revised to the following:

SC.4 CONTRACTOR'S OFFICE AT SITE OF WORK. During the performance of this Contract, the Contractor shall maintain a suitable office during construction at the project site of the work which shall be the headquarters of a representative authorized to receive drawings, instructions, or other communication or articles. Office shall not be a work truck. On site office shall be either a portable building trailer or shipping container (set up like an office). Any communication given to the said representative, or delivered at the Contractor's office at the site of the work in his absence, shall be deemed to have been delivered to the Contractor. Copies of items listed under

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Article SC.5, FIELD RECORDS, shall be kept at the Contractor's office at the site of the work, available for use at all times.

b. REVISED SCOPE. RFP Solicitation; Section 3 Scope of Work; II. RFP

Evaluation and Selection Criteria; “Tab D” – Approach to Delivery of Services; 4.; Paragraph 5 is revised to the following:

KUA has coordinated with Transformer Manufacturer for delivery, storage, offloading, and dress of transformers. Contractor’s schedule will need to indicate when the site is secure and ready to receive delivery trucks and that the transformer pads are ready prior to transport.

c. ADD SCOPE. RFP Solicitation; Section 3 Scope of Work; II. RFP

Evaluation and Selection Criteria; “Tab D” – Approach to Delivery of Services; the following scope is added:

8. KUA is working with manufacturer of substation PDCs and Control House to have proposed delivery dates extended to 09/1/2026. The contractor’s scope of work will include either:

a) Establishment of the site securely with walls and gates installed and of the site drive accessways for the safe use of delivery trucks and cranes, and completion of the installation of fully cured equipment pads by 9/1/2026

b) or pickup, relocation, and unloading of PDCs and Control

House from KUA storage location to Van Meter equipment pads (inclusive of any required cranes).

d. REVISED PAGE LIMITATION:

There is no page limit for the proposal packages. The previously stated 50-page maximum is no longer applicable.

III. REVISED SOLICITATION DOCUMENTS

a. REVISED DRAWINGS. Please refer to attached revised drawing file

“REVISED STATION - 2-24-26 KUA VAN METER SUBSTATION BID

SET.pdf”. This revised drawing file replaces the original bid file “STATION - 2-2-26 KUBA VAN METER SUBSTATION BID SET.pdf”.

Also refer to attached file “Sub22_VanMeter_Drawing List REVISED 2- 24-26.xlsx” for a complete project drawing list. Note that revised or added drawings will state 2/24/26 Bid Addenda/Addendum in the drawing title block, and the foundation details have been revised.

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b. REVISED PRICING SHEET. Please refer to attached file “Exhibit_A_- _RFP_26-016-SN_Pricing_Sheets REVISED 2-24-26.xlsx”. This pricing sheet has been revised to include unit pricing for grounding items. The revised pricing sheet should be used for your bid proposal submittal.

IV. ADDITIONAL REFERENCE DOCUMENTS

a. ADDITIONAL REFERENCE DRAWINGS. Please refer to attached files: “KUA_PADCON60806.pdf” and “KUA_PADCONTY1115.pdf”.

These are pad specs for owner furnished contractor installed pads.

V. SCANNED COPY OF MANDATORY PRE-BID MEETING SIGN-

IN SHEET

Bidder(s) must acknowledge receipt of this addendum by signing this form below and returning it with your bid response.

Acknowledgment is hereby made of Addendum #3 to project RFP 26-016-SN Van Meter Substation Construction.

Bidder Signature Date

Bidder Printed Name Company Name

This addendum is issued to provide additional information, clarification, corrections, additions, deletions and/or to answers questions concerning the above referenced solicitation. All information provided in this addendum is incorporated into the solicitation document as if set forth therein. All other parts of the solicitation have been maintained as originally distributed.

This addendum supersedes any verbal or other instructions given to any proposer qualified to respond pursuant to the requirements set forth in the solicitation document.