Spec_Am3_W912PL-13-B-0001.pdf

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

2. AMENDMENT/MODIFICAITON NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicble)

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

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICIATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

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. The hour and date specified for receipt of Offers is extended, 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 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 your 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 APPROPIRATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NO. 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

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.

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 OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., 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)

NSN 7540-01-152-8070

Previous edition unusable

0003 Jan 24, 2013

W912PL

USACE-LOS ANGELES DISTRICT

CONTRACTING DIVISION, WEST REGION BRANCH

P.O. BOX 532711

LOS ANGELES CA 90053-2325

SEE ITEM 6

W912PL-13-B-0001

Dec 21, 2012

Bradley Canyon Levee Extension, Santa Maria River and Tributaries, Santa Barbara County, CA

The bid opening date is extended to January 31st, 2013. See SF-1442.

Please see Standard Form 30 Continuation Page for the other details of this amendment.

Bradley Canyon Levee Extension W912PL‐13‐0001 Santa Maria River and Tributaries

SF‐30 Continuation Page Amendment 0003

Standard Form 30 Continuation Page

Changes to Specification:

Replace the following sections:

Table of Contents

SF-1442

31 41 16 - Metal Sheet Piling

Changes to Drawings

Replace the following drawings:

T‐02 INDEX TO CONTRACT DRAWINGS

S‐01 GENERAL STRUCTURAL NOTES

S‐02 SHEET PILE WALL DETAILS

G‐08 LOG OF BORING DYB11‐1 PAGE 1 AND 2 OF 3

G‐09 LOG OF BORING DYB11‐1 PAGE 3 OF 3 AND DYB11‐1A

G‐10 LOG OF BORING DYB11‐2 PAGE 1 AND 2 OF 3

G‐11 LOG OF BORING DYB11‐2 PAGE 3 OF 3

G‐12 LOG OF BORING DYB11‐3 PAGE 1 AND 2 OF 3

G‐13 LOG OF BORING DYB11‐3 PAGE 3 OF 3

G‐14 LOG OF BORING DYB11‐4 PAGE 1 AND 2 OF 3

G‐15 LOG OF BORING DYB11‐4 PAGE 3 OF 3

G‐16 LOG OF BORING DYB11‐5 PAGE 1 AND 2 OF 3

G‐17 LOG OF BORING DYB11‐5 PAGE 3 OF 3

G‐18 LOG OF BORING DYB09‐01

G‐19 LOG OF BORING DYB09‐02

G‐20 LOG OF BORING DYB09‐03

Bradley Canyon Levee Extension W912PL-13-B-0001

TOC - 1 Amendment 3

PROJECT TABLE OF CONTENTS

DIVISION 00 - BIDDING REQUIREMENTS, CONTRACT FORMS AND CONTRACT CONDITIONS

SF-1442 SOLICITATION, OFFER AND AWARD Am1 Am3 00 00 10 BID SCHEDULE Am1 Am2

00 01 00 INSTRUCTIONS TO BIDDERS

00 06 00 REPRESENTATIONS AND CERTIFICATIONS

00 07 00 CONTRACT CLAUSES

00 08 00 SPECIAL CONTRACT REQUIREMENTS

00 08 50 WAGE RATES Am1

DIVISION 01 – GENERAL REQUIREMENTS

01 11 00 SUMMARY OF WORK Am1 Am2 01 22 00 MEASUREMENT AND PAYMENT Am1 Am2

01 30 00 ADMINISTRATIVE REQUIREMENTS

01 32 01 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 33 00a SUBMITTAL REGISTER Am1

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00 QUALITY CONTROL

01 45 02 QUALITY CONTROL SYSTEM (QCS)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS Am1 01 57 20 ENVIRONMENTAL PROTECTION Am1

01 57 23 TEMPORARY STORM WATER POLLUTION CONTROL

01 58 00 PROJECT IDENTIFICATION

01 62 35 RECYCLED / RECOVERED MATERIALS

01 78 00 CLOSEOUT SUBMITTALS Am1

01 80 00 AS-BUILT DRAWINGS

DIVISION 02 – EXISTING CONDITIONS

02 13 00 DIVERSION AND CONTROL OF WATER

02 41 00 DEMOLITION

DIVISION 03 – CONCRETE

03 25 00 SOIL CEMENT Am1

03 30 53 MISCELLANEOUS CAST-IN-PLACE CONCRETE

DIVISION 05 - METALS

05 50 12 MISCELLANEOUS METAL

DIVISION 31 - EARTHWORK

31 00 00 EARTHWORK Am1 31 11 00 CLEARING AND GRUBBING Am1

31 24 00 STONE PROTECTION

31 41 16 METAL SHEET PILING Am1 Am3

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 11 23 AGGREGATE AND/OR GRADED-CRUSHED AGGREGATE BASE COURSE

32 12 10 BITUMINOUS TACK AND PRIME COATS

32 12 16 HOT-MIX ASPHALT (HMA) FOR ROADS

32 92 21 HYDROSEEDING

32 98 00 TYPE-2 CABLE FENCE

TOC - 2 Amendment 3

DIVISION 33 – UTILITIES

33 40 00 STORM DRAINAGE UTILITIES

-- End of Project Table of Contents –

SOLICITATION, OFFER,

AND AWARD

(Construction, Alteration, or Repair)

1. SOLICITATION NUMBER 2. TYPE OF SOLICITATION

SEALED BID (IFB)

NEGOTIATED (RFP)

3. DATE ISSUED PAGE OF PAGES

IMPORTANT - The "offer" section on the reverse must be fully completed by the offeror.

4. CONTRACT NUMBER 5. REQUISITION/PURCHASE REQUEST NUMBER 6. PROJECT NUMBER

7. ISSUED BY CODE 8. ADDRESS OFFER TO

9. FOR INFORMATION CALL

A. NAME B. TELEPHONE NUMBER (Include area code) (NO COLLECT CALLS)

SOLICITATION

NOTE: In sealed bid solicitations "offer" and "offeror" mean "bid" and "bidder".

10. THE GOVERNMENT REQUIRES PERFORMANCE OF THE WORK DESCRIBED IN THESE DOCUMENTS (Title, identifying number, date):

11. The Contractor shall begin performance within calendar days and complete it within calendar days after receiving award, notice to proceed. This performance period is mandatory, negotiable. (See .)

12A. THE CONTRACTOR MUST FURNISH ANY REQUIRED PERFORMANCE PAYMENT BONDS?

(If "YES," indicate within how many calendar days after award in Item 12B.)

12B. CALENDAR DAYS

YES NO

13. ADDITIONAL SOLICITATION REQUIREMENTS:

A. Sealed offers in original and copies to perform the work required are due at the place specified in Item 8 by (hour) local time (date). If this is a sealed bid solicitation, offers will be publicly opened at that time. Sealed envelopes containing offers shall be marked to show the offeror’s name and address, the solicitation number, and the date and time offers are due.

B. An offer guarantee is, is not required.

C. All offers are subject to the (1) work requirements, and (2) other provisions and clauses incorporated in the solicitation in full text or by reference.

D. Offers providing less than calendar days for Government acceptance after the date offers are due will not be considered and will be rejected.

NSN 7540-01-155-3212

Designed using Perform Pro, WHS/DIOR, Oct 96

1442-103 STANDARD FORM 1442 (REV. 4-85) (EG)

Prescribed by GSA - FAR (48 CFR) 53.236-1(d)

Amendment 0003

W912PL-13-B-0001 X 21 Dec 2012 1 OF 2

USACE, Los Angeles District Contracting Division, West Region Branch 915 Wilshire Blvd P. O. Box 532711, Los Angeles, CA 90053-2325

See Item 7

Cynthia H. McManus 213.452.3247

BRADLEY CANYON LEVEE EXTENSION, SANTA MARIA RIVER AND TRIBUTARIES, SANTA BARBARA COUNTY, CA.

Construction services include strengthening a 3,380-foot section of the Bradley Canyon Levee.

The levee will be strengthened by two methods: installing a steel combi-wall and construction of a soil revetment.

The estimated cost range of this project is $5,000,000.00 - $10,000,000.00.

Please Note: This project is a 100% Small Business Set-Aside.

IAW Contract Clause No. FAR 52.219-6, "Notice of Total Small Business Set-Aside," offers are solicited only from small business concerns. Offers received from concerns that are not small business concerns shall be considered nonresponsive and will be rejected. Any award resulting from this solicitation will be made to a small business concern.

This project may be delayed, cancelled or revised at any time prior to award.

10 *See 00800

X X *Section 00800

X 10

0 1:00 PM

January 31, 2013

X

OFFER (Must be fully completed by offeror)

STANDARD FORM 1442 BACK (REV. 4-85)

14. NAME AND ADDRESS OF OFFEROR (Include ZIP Code) 15. TELEPHONE NUMBER (Include area code)

16. REMITTANCE ADDRESS (Include only if different than Item 14)

CODE FACILITY CODE

17. The offeror agrees to perform the work required at the prices specified below in strict accordance with the terms of this solicitation, if this offer is accepted by the Government in writing within calendar days after the date offers are due. (Insert any number equal or greater than the minimum requirement stated in 13D. Failure to insert any number means the offeror accepts the minimum in Item 13D.)

AMOUNTS

18. The offeror agrees to furnish any required performance and payment bonds.

19. ACKNOWLEDGEMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments to the solicitation - give number and date of each)

AMENDMENT NO.

DATE

20A. NAME AND TITLE OF PERSON AUTHORIZED TO SIGN OFFER (Type or print) 20B. SIGNATURE 20C. OFFER DATE

AWARD (To be completed by Government)

21. ITEMS ACCEPTED

22. AMOUNT 23. ACCOUNTING AND APPROPRIATION DATA

24.SUBMIT INVOICES TO ADDRESS SHOWN IN

(4 copies unless otherwise specified)

ITEM 25. OTHER THAN FULL AND OPEN COMPETITION PURSUANT TO

10 U.S.C. 2304(c) ( ) 41 U.S.C. 253(c) ( )

26. ADMINISTERED BY 27. PAYMENT WILL BE MADE BYCODE

CONTRACTING OFFICER WILL COMPLETE ITEM 28 OR 29 AS APPLICABLE

28. NEGOTIATED AGREEMENT (Contractor is required to sign this document and return copies to the issuing office.) Contractor agrees to furnish and deliver all items or perform all work requirements identified on this form and any continuation sheets for the consideration stated in this contract. The rights and obligations of the parties to this contract shall be governed by (a) this contract award, (b) the solicitation, and

(c) the clauses, representations, certifications, and specifications incorporated by reference in or attached to this contract.

29. AWARD. (Contractor is not required to sign this document.) Your offer on this solicitation is hereby accepted as to the items listed. This award consummates the contract, which consists of (a) the Government solicitation and your offer, and (b) this contract award. No further contractual document is necessary.

30A. NAME AND TITLE OF CONTRACTOR OR PERSON AUTHORIZED TO SIGN

(Type or print)

30B. SIGNATURE 30C. DATE

31A. NAME OF CONTRACTING OFFICER (Type or print)

31B. UNITED STATES OF AMERICA 31C. AWARD DATE

BY

Amendment 0003

DUNS NO.: TAX ID NO.:

CAGE CODE NO.:

( ) - ; FAX ( ) -

SEE PRICING SCHEDULE

Vandenberg AFB Resident Office 1318 New Mexico Ave Building 9360, Room 201 Vandenberg AFB, CA 93437

USACE, Finance Center

ATTN: CEFCO-AO-D

5722 Integrity Drive Millington, TN 38054-5005

Santa Maria River and Tributaries Amendment 3

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 41 16

METAL SHEET PILING

08/09

PART 1 GENERAL

1.1 SCOPE

1.2 SUBSURFACE CONDITIONS

1.3 REFERENCES

1.4 DEFINITIONS

1.4.1 Combi-wall

1.5 SUBMITTALS

1.5.1 Preconstruction Submittals

1.5.2 Shop Drawings

1.5.3 Product Data

1.5.4 Test Reports

1.5.5 Closeout Submittals

1.6 QUALITY ASSURANCE

1.6.1 Material Certificates

1.6.2 Pile Driving Record

1.6.3 Welding Qualifications, Quality Control, and Inspection

1.6.4 Preinstallation Meeting

1.7 DELIVERY, STORAGE, AND HANDLING

PART 2 PRODUCTS

2.1 METAL SHEET PILING AND WIDE FLANGE BEAM

2.1.1 Connectors

2.1.2 General Requirements

2.2 APPURTENANT METAL MATERIALS

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

2.3.1 Materials Tests

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Pile Driving Equipment

3.1.1.1 Driving Equipment

3.1.1.2 Jetting Equipment

3.1.2 Placing and Driving

3.1.2.1 Placing

3.1.2.2 Driving

3.1.2.3 Pre-drilling

3.1.3 Inspection of Driven Piling

3.1.4 Pulling and Redriving

3.2 INSTALLATION RECORDS

-- End of Section Table of Contents --

SECTION 31 41 16 Page 1

SECTION 31 41 16

METAL SHEET PILING

08/09

PART 1 GENERAL

1.1 SCOPE

Due to environmental and right-of-way constraints, the metal sheet pile system shall be installed from either along the top of the pile line or from the land side of the pile line. The Contractor shall contain any construction debris that could fall into the river side of the piles and prevent debris, tools, weld splatter, etc from falling into the water. The Contractor shall stake the pile alignment in the field for COR approval prior to preconstruction submittals.

1.2 SUBSURFACE CONDITIONS

Extremely difficult driving conditions are anticipated due to the presence of dense soils, cobbles, and/or boulders in the alluvial materials.

Contractor should refer to Geotechnical logs for his interpretation. The dense soils, cobbles, and/or boulders must be penetrated in order to achieve design tip elevation. The Contractor should be prepared to use all available state of the art sheet pile installation technologies to penetrate the dense soils, cobbles, and/or boulders and achieve design tip elevation. Before initiation of sheetpile installation, the Contractor should examine all existing documentation including but not limited to boring logs in and around the project location and past construction documentation. Due to frequent groundwater fluctuations from the adjacent agriculture irrigations, groundwater could be encountered. Caving of soils during pre-drilling operations should, if utilized, be anticipated. The C ontractor should be prepared to deal with caving soils should they be encountered during any drilling operations. The Geotechnical Study Report may be utilized for information. During the bidding process, bidders were instructed to download the Geotechnical Report for information purposes only. The Contractor should be aware that the Geotechnical Study Report is being provided for information only as a courtesy from the Government, and if any discrepensies are found between the Geotechnical Study Report and these Specifications, these specifications will take precedent.

1.3 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 WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2010; Errata 2010) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A572/A572M (2012) Standard Specification for

SECTION 31 41 16 Page 2

High-Strength Low-Alloy Columbium-Vanadium Structural Steel

ASTM A6/A6M (2012) Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling

1.4 DEFINITIONS

1.4.1 Combi-wall

A combi-wall is a system of alternating wide flange beam and sheet piles connected with standard sheet pile connectors. Wide flange beam for a combi-wall may be fabricated from standard wide flange beam sections or rolled sections with the connectors integral with the flanges.

1.5 SUBMITTALS

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

submittals not having a "G" designation are for Contractor Quality Control approval and information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Welding Qualifications; G

SD-02 Shop Drawings

Combi-wall Pile Installation Procedures Plan; G

Sheet Piling and Wide Flange Beam; G

SD-04 Samples

Driving

Pile Driving Equipment; G

Pulling and Redriving; G

SD-06 Test Reports

Materials Tests

SD-11 Closeout Submittals

Pile Driving Record

1.5.1 Preconstruction Submittals

The following shall be submitted for approval: Qualifications and experience shall include satisfactory completion of projects utilizing the proposed installation method including, but not limited to, client name, client reference name and telephone contact number, project location, SECTION 31 41 16 Page 3 construction dates, and summary of the project, Project Manager and On-Site Manager experience.

1.5.2 Shop Drawings

Combi-wall Pile Installation Procedures Plan

The Contractor shall submit an installation procedures Plan that shall include the sequencing and method of pile installation. The procedures, including pre-drilling, will detail the method to install the sheet piles through the dense soil, cobble and/or boulder layers to reach tip elevation. Installation Plan shall also address temporary access road details and work platforms to allow installation of piles from on top or on the landside of the sheet pile wall. Temporary platforms shall be removed after installation of the piles and the levee shall be reconstructed to the geometry shown on the plans, in accordance with SECTION 31 00 00:

EARTHWORK. Stone protection on the riverside slope shall be restored to original condition, or better, if disturbed during installation of piles.

The plan shall identify driving criteria.

Sheet Piling and Wide Flange Beam

Detail drawings for sheet piling and wide flange beam, including fabricated sections,shall show complete piling dimensions and details, driving sequence and location of installed piling. Detail drawings shall include details of top protection, special reinforcing tips, tip protection, lagging, splices, fabricated additions to plain piles,cut-off method, and dimensions of templates and other temporary guide structures for installing piling. Detail drawings shall provide details of the method of handling piling to prevent permanent deflection, distortion or damage to piling connectors, auger procedure, and backfill of voids and depressions encountered

1.5.3 Product Data

Driving

Records of the completed combi-wall driving operations shall be maintained.

These records shall provide a system of identification which shows the disposition of approved piling in the work, driving equipment performance data, piling penetration rate data, piling dimensions and top and bottom elevations of installed piling. In addition, if pre-drilling is performed, the records shall show depth of pre-drilling, rate of pre-drilling, conditions encountered (e.g. cobbles, boulders, dense soils), and groundwater depth. The format for driving records shall be as attached in Section 01 33 00, Submittal Procedures.

Pile Driving Equipment

Complete descriptions of combi-wall driving equipment including augering/predrilling equipment, extractors, protection caps and other installation appurtenances, prior to commencement of work shall be submitted for approval.

Pile Driving/Pre-Drilling Record

The proposed method of pulling sheet piling and wide flange beam, prior to

SECTION 31 41 16 Page 4 pulling any piling shall be submitted for approval.

1.5.4 Test Reports

Reports showing that sheet piling and wide flange beam and appurtenant metal materials meet the specified requirements shall be submitted for each shipment and identified with specific lots prior to installing materials.

Material test reports shall meet the requirements of ASTM A572/A572M, and submitted for approval.

1.5.5 Closeout Submittals

Submit pile driving records in accordance with the paragraphs titled Pile Driving Record and INSTALLATION RECORDS for each sheet pile and wide flange beam installed.

1.6 QUALITY ASSURANCE

1.6.1 Material Certificates

For each shipment, submit certificates identified with specific lots prior to installing piling. Identification data should include piling type, dimensions, chemical composition, mechanical properties, section properties, heat number, and mill identification mark.

1.6.2 Pile Driving Record

Contractor shall prepare pile-driving records. Pile driving records shall include as a minimum:

a. Unique pile identifier

b. Pile location

c. Pile type and size

d. Hammer make and model

e. Fuel setting (note any changes during driving)

f. Start and stop times, including any delays

g. Blow rate (noted every 10 feet of driving)

h. Hammer stroke (noted every 10 feet of driving)

i. Blow count for every foot of driving

If pre-drilling is performed, the Contractor shall prepare pre-drilling records. As a minimum, the pre-drilling records shall include the drilling Contractor, pre-drilling location, drill equipment used, drilling method, pre-drill depth, rate of pre-drilling, drill hole diameter, conditions encountered (e.g. cobbles, boulders, dense soils), and groundwater depth.

1.6.3 Welding Qualifications, Quality Control, and Inspection

Shop welding, qualification of welding procedures, welders, and welding operators, and welding quality control and inspection shall be in accordance with AWS D1.1/D1.1M.

1.6.4 Preinstallation Meeting

Conduct a preinstallation meeting at the Project site to review work limits,pile installation procedures, safety precautions, etc. with the Owner,Owner's Representative(s), Inspector, and other project stakeholder representatives as needed. The Contractor shall notify the Owner a minimum of 3 working days in advance of such meeting.

SECTION 31 41 16 Page 5

1.7 DELIVERY, STORAGE, AND HANDLING

Materials delivered to the site shall be new and undamaged and shall be accompanied by certified test reports. Provide the manufacturer's logo and mill identification mark on the sheet piling as required by the referenced specifications. Store and handle sheet piling in the manner recommended by the manufacturer to prevent permanent deflection, distortion or damage to the connectors; as a minimum, support on level blocks or racks spaced not more than 10 feet apart and not more than 2 feet from the ends. Storage of sheet piling should also facilitate required inspection activities. Handle sheet piling over 80 feet in length using a minimum of two pickup points.

PART 2 PRODUCTS

2.1 METAL SHEET PILING AND WIDE FLANGE BEAM

Submit detail drawings for sheet piling and wide flange beam, including fabricated sections, showing complete piling dimensions and details, driving sequence and location of installed piling.

a. Include in the drawings details of top protection, special reinforcing tips, tip protection, lagging, splices, fabricated additions to plain piles, cut-off method, and dimensions of templates and other temporary guide structures for installing piling. Provide details of the method for handling piling to prevent permanent deflection, distortion or damage to piling connectors. Fabricated sections shall conform to the requirement of the piling manufacturer's recommendations. Provide sheet piling with standard pulling holes.

b. Metal sheet piling and wide flange beam shall be hot-rolled steel sections conforming to ASTM A572/A572M, Grade 50.

2.1.1 Connectors

The connectors of sheet piling shall be free-sliding, provide a swing angle suitable for the intended installation but not less than 5 degrees when connected, and maintain continuous connection when installed. Connectors on wide flange beams for the combi-wall system may be shop welded conforming to the requirements of AWS D1.1/D1.1M or hot-rolled with the connector integral with the flange. Connectors on the wide flange beams shall extend the full length of the adjoining sheet pile section in accordance with manufacturer recomendation and shall conform with AWS D1.1/D1.1M.

Alternative to welded connectors will not be accepted.

2.1.2 General Requirements

Sheet piling or wide flange beam shall be full-length sections of the dimensions shown.

2.2 APPURTENANT METAL MATERIALS

Provide metal plates, shapes, bolts, nuts, rivets and other appurtenant fabrication and installation materials conforming to manufacturer's standards and to the requirements specified in the respective sheet piling standards of ASTM A572/A572M and ASTM A6/A6M.

SECTION 31 41 16 Page 6

2.3 TESTS, INSPECTIONS, AND VERIFICATIONS

Requirements for material tests, workmanship and other measures for quality assurance shall be as specified and in ASTM A572/A572M and ASTM A6/A6M.

2.3.1 Materials Tests

Submit certified materials tests reports showing that sheet piling or wide flange beam of a combi-wall system meet the specified requirements of ASTM A572/A572M, Grade 50. Material test reports shall meet the requirements of ASTM A572/A572M and ASTM A6/A6M. Perform material tests conforming to the following requirements. Sheet piling and wide flange beam shall be tested and certified by the manufacturer to meet the specific chemical, mechanical, and section property requirements prior to delivery to the site. Testing of sheet piling and wide flange beam for mechanical properties shall be performed after the completion of all rolling and forming operations.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Pile Driving Equipment

Submit to the Contracting Officer for approval descriptions of pile driving equipment to be employed in the work. Descriptive information includes manufacturer's name, model numbers, capacity, rated energy, hammer details, cushion material, helmet, and templates. Pile driving equipment shall conform to the following requirements.

3.1.1.1 Driving Equipment

Steel Sheet Piles installation shall consist of preliminary staging, augering, predrilling, welding, and all additional work that is necessary for installing sheet piles to the lines and grades as specified on the plan and profile, cross sections, details, as directed by the COR and as described herein.

Pile driving can be accomplished by using the hydraulic press-in method, Hammer/impact driving, or vibratory installation. The Contractor shall solely be responsible for selecting the method that ensures the installation of the piles to the design tip elevations shown on the project plans.

The CONTRACTOR/Subcontractor performing the sheet pile installation shall maintain an on-site supervisor at all times while the sheet pile installation operations are being performed. This supervisor shall have a minimum of three (3) years experience installing sheet piles using the proposed methods and a minimum of 3 completed projects.

Steel sheet pile sections shall be connecteded for the full length and shall be driven at the locations, alignment, and elevations as indicated on the plans. Care shall be taken during installation to insure that each sheet pile is being set at the desired driving dimensions. Sheet pile connectors shall be continuous and reasonably free-sliding when threaded.

Sheet piles shall not be spliced without prior written consent of the COR.

If splicing of sheet piles is requested by the CONTRACTOR, plans, specifications, and design calculations for splicing of piles shall be submitted to the COR prior to the driving and splicing of such piles.

SECTION 31 41 16 Page 7

Sections that are damaged during handling or driving shall be replaced or repaired to the satisfaction of the Contracting Officer at the CONTRACTOR's expense. Piles may be driven in pairs, if applicable.

As previously mentioned difficult driving conditions could be encountered.

Due to difficult driving conditions, if the sheet piles and wide flange beam cannot obtain its proper elevation without sustaining damage, the CONTRACTOR shall notify the COR and propose additional methods such as predrilling, augering, chiseling, crushing, pulverizing or breaking to continue driving or spudding the pile to break through the obstruction at no additional cost to the Government.

During the installation process of the sheet piles, the ground adjacent to the piles and/or other areas within this project boundary may settle or consolidate during driving. Such depressions caused by pile driving operations shall be backfilled and compacted to meet the finished lines and grades as shown on the plans as approved by the Contracting Officer.

3.1.1.2 Jetting Equipment

Jetting will not be permitted.

3.1.2 Placing and Driving

3.1.2.1 Placing

The Pilings properly placed and driven shall be connected throughout their length with adjacent pilings to form a continuous diaphragm throughout the length or run of piling wall.

a. Pilings shall be carefully located as indicated on the drawings.

Pilings shall be placed plumb with out-of-plumbness not exceeding 1/8 inch per foot of length and true to line. Place the pile so the face will not be more than 2 inches from vertical alignment at any point.

Top of pile at elevation of cut-off shall be within 1/2 inch horizontally and 2 inches vertically of the location indicated.

Manipulation of piles to force them into position will not be permitted. Check all piles for heave. Redrive all heaved piles to the required tip elevation.

b. Temporary wales, templates, or guide structures shall be provided by the Contractor to insure that the pilings are placed and driven to the correct alignment. Use a two tier system of structural framing sufficiently rigid to resist lateral and driving forces and to adequately support the piling until design tip elevation is achieved.

The top and bottom tiers shall be a minimum of ten (10) feet apart. At least two templates shall be used in placing each piling. Templates shall not move when supporting piling. Fit templates with wood blocking to bear against the web of each alternate pile and hold the pile at the design location alignment. Provide outer template straps or other restraints as necessary to prevent the piles from warping or wandering from the alignment. Mark template for the location of the leading edge of each alternate pile. If in view, also mark the second level to assure that the piles are vertical and in position. If two guide marks cannot be seen, other means must be used to keep the pile vertical along its leading edge.

c. Installed piling tops shall not deflect more than 1/2" horizontally, SECTION 31 41 16 Page 8 under any imposed loading, during the contract performance period.

3.1.2.2 Driving

Pilings shall be driven with the proper size equipment for the anticipated geologic conditions and by approved methods so as not to subject the pilings to damage and to ensure proper connection throughout theirlengths.

a. Driving equipment shall be maintained in proper alignment during driving operations by use of leads or guides. Caution shall be taken when a hard driving condition is encountered to avoid connector-melt or damages.

b. A protecting cap shall be employed in driving to prevent damage to the tops of pilings. Pilings damaged during driving or driven out of connector shall be removed and replaced at the Contractor's expense.

c. Adequate precautions shall be taken to insure that pilings are driven plumb.

d. If obstructions restrict driving a piling to the specified penetration the obstructions shall be removed or penetrated with a crush auger or chisel beam at no cost to the Government. Difficult foundation conditions at the site could include driving through dense soils, cobbles, and boulders or other hard materials. Pilings shall be driven to depths shown. A tolerance of 2 inches above the indicated top elevation will be permitted.

e. At the Contractor's expense predrilling, crush augering, chisel beam, or augering may be used, but the Contractor shall discontinue augering approximately 4 feet above the calculated pile tip elevation. The Contractor shall drive the pile the final 4 feet of penetration.

3.1.2.3 Pre-drilling

Pre-drilling of the combi-wall may be allowed at the Contracting Officer's discretion if minimum tip elevation is not obtained by use of a hammer complying with the above minimum requirements. Pre-drilling shall be done to loosen soils and not remove soils. Any voids resulting from pre-drilling shall be backfilled with soil cuttings or fill material prior to pile installation. No additional payment shall be made for pre-drilling related work. Pre-drilling shall be performed at the Contractor's expense.

A pre-drilling procedure plan shall be approved prior to any pre-drilling activities.

3.1.3 Inspection of Driven Piling

Perform continuous inspection during pile driving. Inspect all piles for compliance with tolerance requirements. Bring any unusual problems which may occur to the attention of the Contracting Officer. The Contractor shall inspect the connected joints of driven pilings extending above ground.

Pilings found to be out of connection shall be removed and replaced at the Contractor's expense. The Contracting Officer may also inspect the connected joints of driven pilings extending above ground. Pilings found to be out of connection shall be removed and replaced at the Contractor's expense.

3.1.4 Pulling and Redriving

The Contractor shall pull, as directed by the Contracting Officer, selected

SECTION 31 41 16 Page 9 pilings after driving to determine the condition of the underground portions of pilings. Any piling so pulled and found to be damaged from driving or pulling, to the extent that its usefulness in the structure is impaired as determined by the Contracting Officer, shall be removed and replaced at the Contractor's expense. Pilings pulled and found to be in satisfactory condition shall be redriven as specified, at the Contractor's expense. Any piling directed to be pulled, shall be redriven or replaced to the specified tip elevation prior to installation of any subsequent piling.

3.2 INSTALLATION RECORDS

Maintain a pile driving record for each sheet pile and wide flange beam driven. Indicate on the installation record: installation dates and times, type and size of hammer, rate of operation, total driving time, dimensions of driving helmet and cap used, blows required per foot for each foot of penetration, final driving resistance in blows for final 6 inches, pile locations, tip elevations, ground elevations, cut-off elevations, and any reheading or cutting of piles. Record any unusual pile driving problems during driving. Submit complete records to the Contracting Officer.

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SECTION 31 41 16 Page 10