Amendment A002.pdf

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

N/A

PAGE

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE NO. 5. PROJECT NO. (If applicable)

A002 01/23/2026 N/A WA FLAP SKAMAN 92135(1)

Wind River Road Slide Construction

6. ISSUED BY CODE N/A 7. ADMINISTERED BY (If other than Item 6) CODE N/A

Department of Transportation Federal Highway Administration 610 East Fifth Street Vancouver WA 98661-3801

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and Zip Code) 9A. AMENDMENT OF SOLICITATION NO.

X

69056725B000013

9B. DATED (SEE ITEM 11)

12/30/2025

10A. MODIFICATION OF CONTRACT/ORDER NO.

N/A

10B. DATED (SEE ITEM 13)

CODE: N/A FACILITY CODE: N/A N/A

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

| X | The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers (__ ) is extended, ( x ) is not extended.

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 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or telegram 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 telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

N/A

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

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A THIS CHANGE ORDER IS ISSUED PURSUANT TO (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO. IN

ITEM 10A.

N/A

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

N/A

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

N/A

D OTHER (Specify type of modification and authority) N/A

E. IMPORTANT: Contractor n/a is not, n/a is required to sign this document and return n/a copies to the issuing office.

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

WA FLAP SKAMAN 92135(1), Wind River Road Slide Reconstruction

See page 2

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.

15a. NAME AND TITLE OF SIGNER (Type or print) 15a. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

N/A

15B. CONTRACTOR/OFFEROR 15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 16C. DATE SIGNED

BY_________________________________________ BY N/A___________________________ N/A (Signature of person authorized to sign) (Signature of Contracting Officer)

NSN 7540-01-152-8070

PREVIOUS EDITION NOT USABLE

30-105 STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

Amendment No. A002, dated 01/23/2026 WA FLAP SKAMAN 92135(1) Solicitation No. 69056725B000013 Wind River Road Slide Reconstruction

REVISIONS ARE AS FOLLOWS:

SF 1442, SOLICITATION, OFFER, AND AWARD (Pen & Ink change)

SPECIAL CONTRACT REQUIREMENTS

Page F-6, Subsection 257.06 Design and Construction. Revises, (a) Soldier pile retaining walls with permanent ground anchors.

PLANS

Plan sheet # C.4 Revises, Typical Section Soldier Pile Wall.

ENCLOSURES

Pages:

F-6

Plan Sheets:

C.4

F-6 DIVISION 250

Special Contract Requirements Project: WA FLAP SKAMAN 92135(1), Wind River Road Slide Reconstruction

Section 257. — CONTRACTOR-DESIGNED RETAINING

STRUCTURES

Description

257.01 Delete this Subsection and substitute the following:

This work consists of design and engineering a permanent soldier pile retaining wall and a mechanically-stabilized earth (MSE) wall.

Material

257.02 Delete the following from the materials list:

Micropiles 567 Reinforced concrete retaining walls 258 Reinforced soil slopes 261 Rockery, special rock embankment, and rock buttress 252 Soil nail retaining walls 259

Construction Requirements

257.06 Design and Construction. Delete this Subsection and substitute the following:

Design and Construction. Unless otherwise stated, design retaining structures according to AASHTO, LRFD Bridge Design Specifications. Design and construct retaining structures according to the approved drawings, and the following as applicable:

(a) Soldier pile retaining walls with permanent ground anchors. Conform to Sections 254, 256 and 552. Design permanent ground anchors that are a maximum of 80 feet in horizontal plan length with a minimum 40-foot no-bond zone that is constructed beyond and below the active landslide shear plane as described in the geotechnical report(s). Provide a cast-in-place concrete fascia. Include a global stability analysis for the soldier pile wall design using a limit equilibrium model which considers the additional landslide loads. Meet a minimum factor of safety of 1.25 for static global stability. Seismic analysis is not required

(b) MSE walls. Conform to Section 255. Provide wire-faced mechanically-stabilized earth walls with gabion rock infill visible. Do not obscure the gabion rock with hardware cloth, facing geogrid, or other products. Design MSE reinforcement for a maximum 2-foot vertical spacing, and a minimum length equal to 100 percent of the total wall height, H, per stepped wall section. See WSP geotechnical report for MSE wall design parameters. Wall design methodologies may follow either AASHTO LRFD Bridge Design Specifications (9th editions or later) or FHWA GEC 011, Design and Construction of Mechanically Stabilized Earth (MSE) Walls, 2023.

Revised by Amendment A002

Existing ground

12" min. thickness concrete in place

Permanent fascia, LC

C o n s tr u c ti o n a n d C le a r in g l im it

6-inch compacted depth

Roadway aggregate, method 2, Approximate slip plane

Existing ground

Existing grade

Tack coat at joint two 1.5" lifts with tack coat between lifts

3-inch compacted depth, placed in

Asphalt concrete pavement, type 1, Turf establishment limits

Ground anchor

See Section I for details class A steel posts

Guardrail system MGS, type 2, Sawcutting pavement

Drilled shaft two 1.5" lifts with tack coat between lifts

3-inch compacted depth, placed in

Asphalt concrete pavement, type 1, Existing ground detail, sheet C.1

See overlay edge

See Section H for details

(Soldier Pile Wall) retaining structure design

Contractor provided

Soldier pile retaining wall, pipe to facilitate wall drainage

Provide underdrain and outlet

:1 .5 m a x

V arieswith tack coat between lifts third lift = 1.5"; top lift = 1.5")

(bottom lift = 3"; second lift = 3";

9-inch compacted depth, placed in four lifts

Asphalt concrete pavement, type 1, Varies [2]

80' max

C o n s tr u c ti o n li m it

Varies 4' [1]Varies

12'12' m in

6" min.

Varies

See Section I for details class A steel posts

Guardrail system MGS, type 2, Varies Shldr. (match existing)

Varies Shldr. (match existing)

Asphalt Pavement Milling, 2-Inch Depth

2-Inch Depth Asphalt Pavement Milling, C o n s tr u c ti o n a n d

C le a r in g l im it

10' pavement edge.

guardrail posts are embedded in soil beyond station limits shown in the plans. Ensure

2. Omit paved safety edge within guardrail surface and proposed overlay.

1. Apply tack coat between existing asphalt

2 Revised by Amendment A002

LC

Excavate and backfill

"MAIN 01"

18+36.25 to 20+31.00

Profile grade

Traveled lane

Match existing

Traveled lane Traveled lane

Match existing Match existing

Shldr.

19+90.00 to 20+31.00, LT

FOOTNOTE:

Match existing slope of adjacent traveled lane.

[2] ane width. Match existing l

[1]

NOTE:

:4

A

M

J a n u a r y

T y p ic a l

S e c ti o n

S o ld ie r

P il e c p w w o r k w f l\ d

\w a a s k a m a n p ln ty p

.d g n

SHEET 4 OF 4

SOLDIER PILE WALL

TYPICAL SECTION

PROJECT

NUMBER

SHEET

C.4

WA FLAP SKAMAN 92135(1)