B.08_W9127N21B00140005.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of this amendment is to update Specification Section 05 50 to remove reference to anodes.

All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 19-May-2021

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W9127N21B0014

X 9B. DATED (SEE ITEM 11)

21-Apr-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

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 Offer is extended, X is not extended.

Offer 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)

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.

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).

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

19-May-2021

CODE

USACE, PORTLAND DISTRICT

333 SW 1ST AVE

PORTLAND OR 97204

W9127N 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W9127N21B0014

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

(End of Summary of Changes)

SECTION 05 50 06.00 26

POWERHOUSE TRASH RACKS

05/17

PART 1 GENERAL

1.1 GENERAL INFORMATION

This Section covers the fabrication requirements, workmanship provisions, and miscellaneous metals, standard articles and shop fabricated items for John Day Trash Rack. For fabrication requirements and workmanship provisions for items specified in this Section also conform to the requirements of Section 05 05 23.16 26 STRUCTURAL STEEL WELDING AND FABRICATION. For additional information and directions regarding the exixting trash racks refer to section 01 11 00.00 25,"SUMMARY OF WORK".

1.2 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 303 (2016) Code of Standard Practice for Steel Buildings and Bridges

AISC 325 (2017) Steel Construction Manual

AISC 326 (2009) Detailing for Steel Construction

ASME INTERNATIONAL (ASME)

ASME B1.1 (2003; R 2018) Unified Inch Screw Threads (UN and UNR Thread Form)

ASME B18.2.1 (2012; Errata 2013) Square and Hex Bolts and Screws (Inch Series)

ASME B18.2.2 (2015) Nuts for General Applications:

Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

ASME B18.3 (2012) Socket Cap, Shoulder, Set Screws, and Hex Keys (Inch Series)

ASME B18.21.1 (2009; R 2016) Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)

ASTM INTERNATIONAL (ASTM)

ASTM A53/A53M (2020) Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A1018/A1018M (2016a) Standard Specification for Steel, Sheet and Strip, Heavy-Thickness Coils, Hot-Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength

ASTM A572/A572M (2018) Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ASTM F436/F436M (2019) Standard Specification for Hardened Steel Washers Inch and Metric Dimensions

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020) Structural Welding Code - Steel

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS A3.0M/A3.0 (2020) Standard Welding Terms and Definitions

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00, SUBMITTAL PROCEDURES:

SD-01 Prefabrication Submittals

Work Plan; G HDC

Trash Rack Handling Plan; G HDC

SD-02 Shop Drawings

Assembly and Fabrication Sequencing Plan; G HDC

Shop Drawings; G HDC

Delivery/Shipping Plan; G

Detail Drawings; G, HDC

SD-03 Product Data

Materials List; G

Material Test Reports; G

Product Data; G

SD-06 Test Reports

Shop Control Dimensions Test; G HDC

At-Site Dimensional Conformance Test

Functionality Test; G

1.4 WORK PLAN

Submit a detailed Work Plan for Government approval 30 days prior to start of work indicating the timeline of work and describing in sufficient detail the following items at minimum:

Safety measures complying with EM 385-1-1 including methods and equipment to be used during execution of work on-site.

1.5 ASSEMBLY AND FABRICATION SEQUENCING PLAN

Provide drawings and detailed descriptions of the fabrication sequence of all components and subassemblies. Provide drawings and detailed descriptions of the assembly of components into the final structure.

Include details in the assembly and fabrication sequencing plan describing fit-up, welding sequences of individual components and the completed assembly, and identify required hold points necessary for weld inspection in accordance with the quality control plan in the assembly plan. The Assembly and Fabrication sequence plan will be evaluated to show that the fabricator is sequencing the work to control distortion, shrinkage, residual stresses and to meet required tolerances.

1.6 PRE-FABRICATION CONFERENCE

Following approval of Contractor prepared shop drawings and prior to any fabrication, schedule and hold a Prefabrication Conference as soon as possible after Notice to Proceed. Include in the Prefabrication Conference, at a minimum, the Prime Contractor, Fabricator, the Fabricator's primary QC representative, representative from the third party testing lab if applicable, the COR, the Government Quality Assurance Representative, and the Engineer of record for the structure or structures being fabricated. The Prefabrication Conference is required to occur either at the Fabrication Facilities or a similar location as deemed appropriate. Include, at a minimum, in the prefabrication conference the review of the Contract and Shop drawings, the review of these specifications, discussion of the fabricator's QCP, identification of roles and responsibilities including roles and responsibilities of fabrication subcontractors. Prepare for this meeting by reviewing plans and specifications and code concerns prior to this meeting and be prepared to discuss any issues regarding the fabrication including WPS requirements and required witnessing of testing. Submit welding procedure specifications (WPS) a minimum of 14 calendar days prior to the pre-fabrication conference. Discuss feasibility of all welds and detailing; clarity of weld symbols; methods needed to prevent distortion. Identify and be prepared to discuss complicated connections that may require prototyping for both welding and inspection. In addition, hold points/witness points are required to be established during the prefabrication conference.

1.7 SHOP DRAWINGS

a. Prior to performing any fabrication of structures submit detailed shop drawings to the Contracting Officer (CO) and Engineer of Record for approval. Show complete details of materials, tolerances, connections, and proposed welding sequences on shop drawings. Include catalog cuts, templates, fabrication and assembly details, and type, grade, and class of materials, as appropriate on shop drawings.

Utilize AWS A2.4, AWS A3.0M/A3.0, AISC 303, AISC 325, and AISC 326 for shop drawing preparation. Fabricator is required to provide an 11x17 printed copy of the approved set of fabrication drawings to the Government Quality Assurance Representative prior to the start of fabrication.

b. Provide a table containing a list of all members and a reference to each material certificate and test report that applies to that member.

c. Identify on the shop drawings weld procedures and NDE required for each weld. Include any and all splices in the shop drawings and clouded for engineer approval. Do not include splices in the structure without approval of the Engineer of Record.

d. Prepare all shop drawings. Elements of fabricated items inadvertently omitted on contract drawings are to be returned to the Engineer of Record for detailing or be detailed by the fabricator and so indicated on the shop drawings. Cloud any and all details developed by the fabricator on the shop drawings for separate approval by the Engineer of Record. Utilize an approved Registered Professional Engineer for any items designed by the Contractor. Contractor designed items are to be stamped by the approved Engineer who performed or oversaw the design.

e. Identify all field welds required on the shop drawings. Provide a unique identifier for each weld, both shop and field welds, to permit tracking on the weld tracking log.

f. Show all anode attachments and installation details on the shop drawings.

1.8 DELIVERY AND STORAGE

Notify the CO at least 28 days in advance of delivery of the structures.

Store material above ground on platforms, skids, or other supports.

Protect material from dirt, oil, and other foreign matter. Protect material so that water is not permitted to collect and pool. Employ handling methods that do not result in damage to components during fabrication, assembly, loading, shipment, and unloading of components.

Replace damaged material with new material or repair using a procedure approved by the Engineer. Protect completed assemblies/structures from the environment. Shipping of the structures is to be at the Contractor's expense. Deliver all structures to John Day Powerhouse per Sections 01 10 10.00 25, CONTRACTOR'S OPERATIONS AND REQUIREMENTS and 01 11 00.00 25, SUMMARY OF WORK. Coordinate through the Portland District CO for deliveries. Arrange the structures on the delivery vehicles such that no damage occurs during shipping. Direct all slings and lifting lugs up.

Submit Delivery/Shipping Plan drawings providing descriptions of methods of delivering the completed structural units, including details for support during shipment to prevent distortion or other damages, and orientation and location of the structures on the delivery vehicles prior to shipment for Government approval.

1.9 TRASH RACK HANDLING

Take care while lifting the trash rack assembly from horizontal position to vertical position. Submit a Trash Rack Handling Plan for approval.

Include details, diagrams and/or drawings that identify the plan for lifting the trash rack from a horizontal to a vertical position. Include the locations, method of lift and all attachments to the trash racks(s) in the trash rack handling plan. Government Cranes are only equipped to handle trash rack in the vertical position. The Contractor is permitted to operate the tashrake crane. Contractor to deliver trash racks in the upright position dogged in such a manner that the existing crane and lifting beam can reach and handle the trash racks.

1.10 LIFTING BEAM VERIFICATION TEST

Verify the existing John Day trash rack lifting beam for correct fit up with trash rack to be provided. Contractor is required to ship the lifting beam back and forth between John Day Powerhouse and the Contractor's fabrication shop to perform the fit up test. The Contractor must return the lifting beam to John Day Powerhouse by close of business no more than four days from the day the beam is shipped from John Day Powerhouse (e.g.

ship out on Monday, receive back on Thursday same week). Test the existing lifting beam in the shop after fabrication of the trash rack, but prior to shipment back to John Day Powerhouse, to verify that the existing lifting beam latches to the new trash rack. A Government witness will be present for the lifting beam verification test, unless notified in writing otherwise. Provide a minimum 30 calendar days notification to the Government prior to the lifting beam verification test. The lifting beam verification test is to be performed on each trash rack section in the shop to verify fit up. Notify the Engineer of Record and CO if any fit up problems occur. Government approval is required prior to any corrective action taken due to fit up problems. Retest any section that had any corrective action taken. Coordinate with the Government a time that the lifting beam can be removed from John Day Powerhouse, after submitting the work schedule.

PART 2 PRODUCTS

Provide materials and material disposition records as per the requirements of Section 05 05 23.16 26, STRUCTURAL STEEL WELDING AND FABRICATION.

2.1 STRUCTURAL MEMBERS

Provide ASTM A572/A572M, grade 50 as specified or shown on the drawings for all structural steel unless otherwise specified. Mill repairs of base metal are prohibited. Meet all requirements of ASTM A572/A572M and include mill certification. weathering steel will not be accepted.

2.2 PIN

For lifting pins and other rods not specified as bolt use ASTM A1018/A1018M with minimum Fy=50ksi and Fu=65ksi.

2.3 MATERIALS TEST REPORT

Submit a Materials List of the materials to be used in the fabrication of each item at the time the detail drawings are submitted. Submit Material Test Reports together with purchase orders for all material used in fabrication prior to incorporation into the structure. Purchase orders must include the test site address and the name of the testing agency. All steel used in this Contract is required to be tested by the steel mill to ensure that it meets the required standards.

2.4 PRODUCT DATA

Submit product data together with purchase orders for all materials that do not require material test reports prior to the use of the materials in the work

2.5 DETAIL DRAWINGS

Submit detail drawings for metalwork and machine work, prior to fabrication. Include within the detail drawings material thickness, type, grade, and class; dimensions; and construction details. Include in the drawings catalog cuts, erection details, manufacturer's descriptive data and installation instructions, and templates. Include the applicable WPS in weld tails for all welds.

2.6 FABRICATION

2.6.1 Shop Assembly

Perform fabrication and assembly in an indoor, climate controlled shop.

Closely check each item to ensure that all necessary clearances have been provided and that binding does not occur in any moving part. All shop testing for assembly is required to be witnessed by the Government Representative. Immediately remedy errors or defects disclosed without cost to the Government.

2.7 TRASHRACK IDENTIFICATION

Stamp each trashrack with low-stress stamping to identify the various structures fabricated. Stamp each trash rack in the same location.

2.8 MISCELLANEOUS PROVISIONS

a. Drain Holes. Locate drain holes as shown on the drawings, unless otherwise noted. Drill or plasma cut drain holes. Flame cutting of holes will not be permitted.

b. Seal Welds. Seal welds are required to maintain water tightness.

Show all seal welds on the shop drawings and perform all seal welds as shown. Seal welds, when called for on the drawings, are the minimum size fillet weld as required in AWS D1.1/D1.1M or the size of the primary fillet weld as shown. All seal welds are subjected to the same testing requirements required for a fillet weld as required within this specification.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 General

Perform shop control dimensions test and at-site functionality test as required below for the trash racks.

3.1.2 Cleaning

Thoroughly clean all parts to be installed. Remove all packing compounds, rust, dirt, grit and other foreign matter.

3.1.3 Alignment and Setting

Accurately align each structural unit attached to structures fabricated according to this specification . The alignment of all parts with respect to each other must be true within the respective tolerances required.

3.2 FABRICATION

3.2.1 General

Fabricate all structural steel items as per the approved shop drawings, the requirements of this specification, and the requirements of Section

05 05 23.16 26, STRUCTURAL STEEL WELDING AND FABRICATION.

3.2.2 Quality Control

Provide quality control as per the provisions of this specification, Section 05 05 23.16 26, STRUCTURAL STEEL WELDING AND FABRICATION

3.2.3 Protection Of Finished Work

Thoroughly clean machined surfaces of foreign matter. Protect all finished surfaces by suitable means. Oil and wrap unassembled pins with moisture resistant paper or protect by other approved means. Paint finished surfaces of metals as specified in specification Section 09 97 02.13 26, PAINTING - HYDRAULIC STRUCTURES.

3.3 PAINTING

Paint all exposed surfaces of the structure as specified in Section 09 97 02.13 26, PAINTING - HYDRAULIC STRUCTURES. Grind all edges and remove all weld spatter prior to coating. Accomplish grinding plate edges before paint preparation in order to remove hardness as a result of flame cutting. Break all corners, edges, and holes to a 1/16 inch radius prior to painting.

3.4 SHOP CONTROL DIMENSIONS TEST

After fabrication of each structure, but prior to painting, record and submit on the "control dimensions" chart, provided on drawings, the actual fabricated dimensions. Verify all pieces meet tolerances stated within these specifications and drawings. The control dimensions are required to be witnessed by a Government representative. Provide at least 14 days notice to the Government prior to the control dimensions test. Measure control dimensions at a minimum of two locations, one per side. For example, measure the control height at both ends of the section. Record the most adverse tolerance dimension within the control dimension chart.

Verify control dimensions prior to witness points defined under the schedule of witness points so that they may be verified during inspection and prior to either final assembly, painting, shipping or installation of the structure. Verify and document all control dimensions prior to shipping the structure. Take control dimensions with the trash rack suspended in the vertical position. In addition, stack two trashrack sections on top of one another. Submit the results of the control dimensions test. Correct disclosed defects at no cost to the Government.

Perform retesting after defects are corrected

3.4.1 At-Site Dimensional Conformance Test

After shop control dimension test and prior to turning the racks to Government, perform funtionality test of one slot worth of trash racks to include positioning of the racks in the slot and removal of the racks from slot. This is to make sure the rack is compatible with the lifting beam and it operates in the slot smoothly. Disclose and correct defects at no cost to the Government. Perform retesting after defects are corrected. At-site functionality test is required to be witnessed by Government. Provide at least 30 days notice to the Government prior to at-site functionality test.

-- End of Section --