B09-140P2026B0005-Amd_1_0001.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

Vicki Freese-supler

See continuation page

NPS, DSC Contracting Services Div 1 Denver Federal Center, Building 50 P.O. Box 25287 Denver CO 80225-0287

PDS

140P2026B0005

09/03/2026

08/31/2026

1 2

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

140P2026B0005/0001

Yellowstone - Mammoth Water Line Replacement, Yellowstone National Park

The purpose of this Amendment is to provide details for the meeting location for the site visit as well as providing the Sealed Bid

Public Bid Opening information.

1. All site showing participants shall meet in front of the Albright Visitor Center in Mammoth area of Yellowstone National Park at 9:00 a.m.

and proceed in accordance with the instructions attached.

2. The public bid opening will be held electronically via a virtual platform through

Microsoft Teams. Both a link and telephone number with meeting instructions are denoted below:

Date: September 15, 2026

Time: 2:00 p.m. Mountain Time

Phone: 202-640-1187, 942256893#

Microsoft Teams Link:

https://teams.microsoft.com/l/meetup-join/19%3am eeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZ

GQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%22

0693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid

%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22

%7d

Meeting ID: 269 967 484 570 15

Passcode: vE7yP2qt

Bidders can also pre-register for the public bid opening by submitting an email to Vicki

Freese-Supler, vicki_freese-supler@ios.doi.gov and Jeanna Manseau, at jeanna_manseau@ios.doi.gov and an email will be provided to you to join the event.

YELL 353045 – Mammoth Waterline Replacement

Pre-Bid Project Overview and Site Visit

September 9, 2026, at 10 a.m. – meet in front of the Albright Visitor Center in Mammoth

From Gardiner: Follow the Old Gardiner Road (the only road beyond the park entrance gate) to the intersection immediately north of the Mammoth administration area. Follow yellow line on map below.

Allow 15 minutes once through the park gate.

From West Yellowstone: Drive through the park entrance gate. Turn left at Madison Junction. Go straight at Norris Junction. Follow blue line to intersection immediately north of the Mammoth administration area once you’ve reached Mammoth. Allow 2 hours once through the park gate.

Parking will be hard to find, so arrive early. Meet in front of the Albright Visitor Center at 10 a.m. DSC staff will greet participants and lead the group to the project site.

Please be on time as DSC and NPS technical staff will need to leave the site at approximately 10:45 a.m.

to attend another meeting.

Microsoft Teams Need help?

Join the meeting now Meeting ID: 269 967 484 570 15 Passcode: vE7yP2qt https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thre ad.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d

Dial In Option:

202-640-1187 Passcode: 942256893# https://aka.ms/JoinTeamsMeeting?omkt=en-US https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d https://teams.microsoft.com/l/meetup-join/19%3ameeting_YWQ5MTdlNTUtY2Y4OS00YzI3LThkYTgtM2MxNTdiZGQ5NWJk%40thread.v2/0?context=%7b%22Tid%22%3a%220693b5ba-4b18-4d7b-9341-f32f400a5494%22%2c%22Oid%22%3a%22d7bad7d8-dbe1-4e37-bbbb-f199a2b5438e%22%7d

Sponsored by GSA FAR (48 CFR) 53.110