Sol_140R2026R0018_Amd_0005.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Roxana Ahola

See continuation page

Bureau of Reclamation Mid-Pacific Region Regional Office Division of Acquisition Services 2800 Cottage Way, Room E-1815 Sacramento CA 95825-1898

R20

140R2026R0018

08/17/2026

08/17/2026

1 3

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140R2026R0018/0005

A. TITLE: Bradbury Dam Outlet Valve Replacement

B. PURPOSE:The purpose of this amendment is to incorporate a question and answer and extend the proposal due date to October 6, 2026 at 9am

PDT.

C.DESCRIPTION: This amendment incorporates the following question and answer:

Question -

Request for Substitution. Amendment 0004 states that the proposed butterfly valves are specified to serve as guard valves upstream of the fixed-cone valves. Our engineering review indicates that under maximum system conditions, with the downstream 24-inch fixed-cone valve fully open, flow may substantially exceed the

150-cfs operating condition identified for the

30-inch butterfly valve. This raises concern regarding the butterfly valve's ability to safely close under the resulting dynamic-flow condition if the fixed-cone valve becomes stuck or otherwise remains open. A properly designed knife gate valve would provide an unobstructed flow path when fully open and can be designed for closure under the maximum differential pressure and dynamic-flow condition. We are therefore requesting confirmation of the required emergency/guard-valve closing condition and whether a knife gate valve meeting those requirements would be acceptable as an alternative. Specifically, Section 35 22

25, Paragraph 2.01.A.1.c requires the 30-inch butterfly valves to function as guard valves when maintenance is required for the fixed-cone valves. Please confirm whether the guard valve is required to be capable of closing under the maximum dynamic-flow condition that could occur if the downstream fixed-cone valve remains fully open. If so, will the Government permit a

30-inch knife gate valve, designed and rated to close under the specified maximum differential pressure and dynamic-flow condition, to be furnished in lieu of the specified AWWA C504 butterfly valve, provided the proposed knife

Continued...

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140R2026R0018/0005 gate valve meets the applicable pressure, dimensional, actuator, operational, and testing requirements and fits within the available installation envelope?

Government Answer -

Under normal and maximum operating conditions, the butterfly valve will not experience flows above the specified 150 cfs operating condition.

Based on the design and operational requirements for this facility, the flow in each leg of the bifurcation will not exceed 150 cfs. As reservoir head increases, the downstream fixed cone valve is modulated to maintain the desired discharge rate between 0 and 150 cfs. The 30 inch butterfly valves are not intended to function as emergency closure valves. Their guard valve function, as defined in Specification Section 35 22 25, Paragraph

2.01.A.1.c, is limited to isolating the fixed cone valves during maintenance activities under controlled conditions. The designated emergency isolation device is the 2'-9" × 2'-9" High

Pressure Gate located approximately 700 feet upstream of the bifurcation. Because emergency closure is not a required function of the 30 inch guard valves, they are not required to close under maximum dynamic-flow conditions with the fixed cone valve fully open.

Accordingly, substitution of a knife gate valve based on emergency closure capability is not necessary for meeting the operational requirements of the contract.

******The proposal due date is extended to

October 06, 2026, at 0900 PDT******

Sponsored by GSA FAR (48 CFR) 53.110