Sol_140P8126B0007_Amd_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

Caroline Bachelier

See continuation page

NPS, PWR - LAKE MABO

601 Nevada Way Boulder City NV 89005-2426

PPL

140P8126B0007

06/22/2026

05/21/2026

1 5

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

140P8126B0007/0001

Project will expand the existing takeout ramp on the Colorado River at Pearce Ferry by resetting 1800 SF of precast concrete panels to extend the existing ramp 55 feet towards the river, pour a new 8,400 SF concrete pad for staging equipment and vehicles at the top of the launch ramp, and widen the overall launch ramp by 40¿ in order to provide more launching and staging area for rafting and jetboat expeditions on the Colorado River through the

Grand Canyon.

Amendment 0001

The purpose of this amendment is to answer contractor questions, publish the site visit attendance, update wage determination, and post the bid opening meeting information:

1. Answer Contractor Question:

Q1: Is the turbidity curtain necessary due to the Colorado River already having a high level of suspended sediment in it?

A1: A turbidity curtain is required as a stipulation in the 404 permit from the Army Corp of Engineers.

Q2: If the turbidity curtain is needed, what is the depth of the river where it would be deployed? We are concearned about the need for a volocity brake to keep everything in place and our people safe during the in-water work.

A2: The estimated depth of the river at the deepest point of deployed turbidity curtain is 1115 or about 8.5 feet. A velocity break is acceptable for in water work as well as adjusting the shape/layout of the curtain for ease of installation. The depth of the river is uncontrolled and may be higher or lower at construction.

Q3: Is it safe to assume that the current water level is approximately the same as it was on October 4, 2022?

A3: NPS does not have current data for this.

Q4: If the water level is the same as on 10-4-22, it looks like the North East corner of the Class 1 Riprap will be approximately 30' offshore into the river at the top. If the bottom is unknown and the river bed drops off at a rapid rate, the bottom width of the riprap will be pretty wide and difficult to quantify?

A4: Based on the currently known contour data, the bed does drop at the end of the existing pipe matting due to swirling currents caused by the pipe matting that has led to undercutting. Once past the pipe matting, the river bed falls at a constant rate following contours shown on plans. If this is shown to be different during construction, a reduction in width of the aggregate base at the end of the ramp is amenable.

Q5: Is there a soils report for the river bottom that specifies whether it consists of a sedimentary material and depth or bedrock type material?

A5: There is no soil report.

Q6: It appears that the 2 existing pipe mats are welded together making it 1 large pipe mat.

Is the intent to cut it into two equal size pieces.

A6: However the contractor feels is easiest to remove the pipe mats, while also allowing for their future reinstalment is acceptable.

Amendment 0001

Q7: Where will the pipe mat or mats be placed for storage after removed from their existing location on the existing ramp?

A7: Please keep them in the excavation/stockpile area called out on sheet 01 11 00 – 7 of the specs.

Q8: Is an archeological monitor required for this project and will the government provided archeological monitor for all excavation activities?

A8: An archeological monitor is not required for this project.

2. A revised wage determination dated 5/18/2026 replaces the wage determination 1/2/2026.

3. Attached is the site visit attendance sign in.

4. The bid due date remains the same, July 8, 2026, at 2pm PDT.

5. The bid opening will be held on via Microsoft Teams on July 9, at 2pm Pacific Daylight Time

(PDT). Below is the hyperlink:

https://teams.microsoft.com/meet/269015208756413?p=Dy9hf8VB4VXC0wBbBO

Meeting ID: 269 015 208 756 413 Passcode: X3SM3pH9

By Phone: +1 202-640-1187 Phone Conference ID: 131417361# https://teams.microsoft.com/meet/269015208756413?p=Dy9hf8VB4VXC0wBbBO tel:+12026401187,,131417361

Sponsored by GSA FAR (48 CFR) 53.110