EII_FY14_Amendment0001.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

Solicitation Number W912PM-13-B-0006, Wilmington Harbor Eagle Island DA Improvements 2014, New Hanover and Brunsw ick Counties, North Carolina, is amended as follow s:

Please Review the Summary of Changes

Also, please note that the time for receipt of bids has been corrected to 2:00 PM EST.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 3

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

16C. DATE SIGNED

BY 29-Aug-2013

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 W912PM-13-B-0006

X 9B. DATED (SEE ITEM 11)

19-Aug-2013

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

29-Aug-2013

CODE

U S ARMY CORPS OF ENGINEERS

WILMINGTON DISTRICT

ATTN: CHARLENNE FIGGINS

69 DARLINGTON AVE

WILMINGTON NC 28403-1343

W912PM 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912PM-13-B-0006

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00100 - BIDDING SCHEDULE/INSTRUCTIONS TO BIDDERS

The following have been modified:

52.236-27 SITE VISIT (CONSTRUCTION) (FEB 1995)

(a) The clauses at 52.236-2, Differing Site Conditions, and 52.236-3, Site Investigations and Conditions Affecting the Work, will be included in any contract awarded as a result of this solicitation. Accordingly, offerors or quoters are urged and expected to inspect the site where the work will be performed.

(b) An organized site visit has been scheduled for 4 September 2013, 10:00 AM EDT

(c) Participants will meet at:

232 Battleship Road Wilmington, NC 28401

(d) Point of Contact is:

Name: Ed Dunlop Address: 69 Darlington Avenue Wilmington, NC 28403-1343 Telephone: 910-251-4492

(End of provision)

W912PM‐13‐B‐0006

SUMMARY OF CHANGES

SECTION 01 33 00 – SUBMITTAL PROCEDURES

Delete existing submittal register in Attachment 1 and replace with attached revised submittal register.

SECTION 33 40 02 – SPILLWAY SYSTEM

Delete all 12 pages in section 33 40 02 in their entirety and replace with attached revised 12 pages.

DRAWINGS

Delete plates C‐3, S‐3, and S‐6 in their entirety and replace with revised plates C‐3, S‐3, and S‐6.

NOTE:

Text that is added or revised by this amendment is replaced in its entirety and underlined and/or printed in bold and/or stamped appropriately.

The text changes may have necessitated reformatting of subsequent text or pages. If this is the case, those pages have also been issued as amended pages but are not underlined or bold text.

(End of Summary of Changes)

Encls

(As stated)

SUBMITTAL REGISTER (ER 415-1-10) TITLE AND LOCATION DATE

CONTRACTOR CONTRACT NUMBER

ACTIVITY

No.

TRANS-

MITTAL

No.

ITEM

No.

SPEC

PARAGRAPH

No.

DESCRIPTION OF

SUBMITTAL

TYPE OF SUBMITTAL

CLASSI-

FICATION

FIO

GA, DA

or CR

REVIEWER

OFFICE / NAME

CONTRACTOR

SCHEDULE DATES

CONTRACTOR

ACTION

GOVERNMENT

ACTION

SUBMIT

NEEDED

BY

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

CODE

CORPS

RECEIVED

DATE

CODE

CORPS

RETURNED

DATE

Eagle Island Improvements FY14

W912PM-13-B-0006 NA

29 Aug 2013

SORT : SECTION & ITEMRANGE : ALL

SECTION - 01 10 00.10 38 SUPPLEMENTARY SPECIAL CONTRACT REQUIREMENTS

1 01 10 00.10 38 1.16 List of Subcontractors PRECON SUBMTL FIO

2 01 10 00.10 38 1.3 Progress Chart PRECON SUBMTL GA

3 01 10 00.10 38 1.16 Quality Control Plan PRECON SUBMTL GA

4 01 10 00.10 38 1.16 Certificate of Insurance CERTIFICATES FIO

5 01 10 00.10 38 1.16 Completion of Corps CQC Course CERTIFICATES FIO

6 01 10 00.10 38 1.16 Letter Appointing Superintendent CERTIFICATES FIO

7 01 10 00.10 38 1.15 testing facilities CERTIFICATES GA

SECTION - 01 33 00 SUBMITTAL PROCEDURES

1 01 33 00 1.8 Submittal Register PRECON SUBMTL GA

2 01 33 00 1.4 Delegation of Authority PRECON SUBMTL GA

SECTION - 01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

1 01 35 26 1.6 Accident Prevention Plan (APP) PRECON SUBMTL GA

2 01 35 26 1.5.1.2 Crane Operators PRECON SUBMTL GA

3 01 35 26 1.5.1.1 Site Safety and Health Officer PRECON SUBMTL GA

4 01 35 26 1.7 Activity Hazard Analysis (AHA) DESIGN DATA GA

5 01 35 26 1.6.1 Crane Critical Lift Plan DESIGN DATA GA

6 01 35 26 1.12 Notifications and Reports TEST REPORTS FIO

7 01 35 26 1.12.2 Accident Reports TEST REPORTS FIO

8 01 35 26 1.12.3 Crane Reports TEST REPORTS FIO

9 01 35 26 1.8 Confined Space Entry Permit CERTIFICATES FIO

10 01 35 26 1.8 Hot work permit CERTIFICATES FIO

11 01 35 26 3.5.1 License CERTIFICATES FIO

12 01 35 26 1.12.4 Certificate of Compliance CERTIFICATES FIO

SECTION - 01 57 20.00 10 ENVIRONMENTAL PROTECTION

1 01 57 20.00 10 1.8 Environmental Protection Plan PRECON SUBMTL GA

SECTION - 01 57 23 TEMPORARY STORM WATER POLLUTION CONTROL

1 01 57 23 1.3 Erosion and Sediment Controls TEST REPORTS FIO

2 01 57 23 2.1.4 Mill Certificate or Affidavit CERTIFICATES FIO

SECTION - 02 41 00 DEMOLITION

1 02 41 00 1.6.1 Existing Conditions PRECON SUBMTL GA

2 02 41 00 1.8 Work Plan SHOP DRAWINGS GA

SECTION - 31 01 00 DIKE EMBANKMENT

1 31 01 00 1.5.2 Acceptance Section Work Plan PRECON SUBMTL GA

2 31 01 00 1.6 Heavy Equipment PRODUCT DATA FIO

SUBMITTAL REGISTER (ER 415-1-10) TITLE AND LOCATION DATE

CONTRACTOR CONTRACT NUMBER

ACTIVITY

No.

TRANS-

MITTAL

No.

ITEM

No.

SPEC

PARAGRAPH

No.

DESCRIPTION OF

SUBMITTAL

TYPE OF SUBMITTAL

CLASSI-

FICATION

FIO

GA, DA

or CR

REVIEWER

OFFICE / NAME

CONTRACTOR

SCHEDULE DATES

CONTRACTOR

ACTION

GOVERNMENT

ACTION

SUBMIT

NEEDED

BY

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

CODE

CORPS

RECEIVED

DATE

CODE

CORPS

RETURNED

DATE

Eagle Island Improvements FY14

W912PM-13-B-0006 NA

29 Aug 2013

SORT : SECTION & ITEMRANGE : ALL

3 31 01 00 3.8 Testing TEST REPORTS FIO

4 31 01 00 3.8 Testing Laboratory CERTIFICATES FIO

SECTION - 31 05 22 GEOTEXTILES

1 31 05 22 1.3 Certificate of Compliance CERTIFICATES GA

SECTION - 31 11 00.10 CLEARING

1 31 11 00.10 3.2.1 Burn Plan SHOP DRAWINGS GA

2 31 11 00.10 3.2.2 Burn Plan SHOP DRAWINGS GA

SECTION - 32 92 19 SEEDING

1 32 92 19 2.5.3 Wood cellulose fiber mulch PRODUCT DATA FIO

2 32 92 19 2.4 Fertilizer PRODUCT DATA FIO

3 32 92 19 3.6 Seed Establishment Period PRODUCT DATA FIO

4 32 92 19 2.1 seed CERTIFICATES FIO

SECTION - 33 34 00 FORCE MAINS AND INVERTED SIPHONS; SEWER

1 33 34 00 3.2 Hydrostatic Tests TEST REPORTS FIO

SECTION - 33 40 02 SPILLWAY SYSTEM

1 33 40 02 2.1.3.6 Thickness PRECON SUBMTL GA

2 33 40 02 2.1.3 Coating System PRECON SUBMTL GA

3 33 40 02 2.7 Concrete PRECON SUBMTL GA

4 33 40 02 2.8 Reinforcing Steel SHOP DRAWINGS FIO

5 33 40 02 2.1 Spillway SHOP DRAWINGS GA

6 33 40 02 2.2 Spillway Pipe SHOP DRAWINGS GA

7 33 40 02 2.1.4.1 Ladders SHOP DRAWINGS GA

8 33 40 02 2.1.4.2 Confined Space Entry and Rescue System E SHOP DRAWINGS GA

9 33 40 02 2.2.2 Screen PRODUCT DATA GA

10 33 40 02 2.2.1 High Density Polyethylene (HDPE) Pipe PRODUCT DATA GA

11 33 40 02 2.1.4.3 Access Hatch Door PRODUCT DATA GA

FY 14 Eagle Island DA Improvements W912PM-13-B-0006 Brunswick Co, NC

SECTION TABLE OF CONTENTS

DIVISION 33 - UTILITIES

SECTION 33 40 02

SPILLWAY SYSTEM

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 MEASUREMENT AND PAYMENT

1.4.1 Spillway System

1.4.2 Dike Embankment Repair

PART 2 PRODUCTS

2.1 SPILLWAYS

2.1.1 Government Furnished Property

2.1.2 Steel

2.1.3 Coating System

2.1.3.1 Paint

2.1.3.2 Application Equipment

2.1.3.3 Weather Conditions

2.1.3.4 Surface Temperature/Shading

2.1.3.5 Color

2.1.3.6 Thickness

2.1.3.7 Manufacturer's Recommendations

2.1.4 Spillway Riser Ladder

2.1.4.1 Ladders

2.1.4.2 Confined Space Entry and Rescue System Equipment

2.1.4.3 Access Hatch Door

2.2 SPILLWAY PIPE

2.2.1 High Density Polyethylene (HDPE) Pipe

2.2.2 Screen for Pipe Opening

2.3 HARDWARE

2.3.1 Spillway Riser Hardware

2.3.2 Steel Walkway Hardware

2.3.3 Timber Pipe Support and Stoplog Hardware

2.4 PIPE SUPPORT FRAMES

2.5 WALKWAY

2.6 STOPLOGS

2.7 CONCRETE

2.7.1 Spillway Riser Foundation and Walkway Support Pad

2.8 REINFORCING STEEL FOR SPILLWAY FOUNDATION AND WALKWAY SUPPORT PAD

2.9 GEOTEXTILE

2.10 SATISFACTORY MATERIAL

2.11 SPILLWAY RISER/DISCHARGE PIPE CONNECTION

PART 3 EXECUTION

3.1 DEWATERING SYSTEM

SECTION 33 40 02 Page 1 Revised by Amendment 0001

3.2 INSTALLATION OF NEW SPILLWAY RISER

3.2.1 Welding

3.2.2 Fabrication Before Coating

3.2.3 Fit

3.2.4 Repairs to Coating

3.2.5 Pipe Flange Assembly

3.2.6 High Density Polyethylene Pipe

3.2.6.1 Joining

3.2.6.2 Handling and Storage

3.2.6.3 Cleanliness and Watertightness

3.2.6.4 Thermal Expansion and Contraction

3.2.7 Foundation Preparation

3.2.8 Timber Piles for Pipe Support Frames

3.2.9 Placing Pipe

3.2.10 Approval Prior to Backfilling

3.2.11 Pipe Bedding

3.2.12 French Drain

3.2.13 Backfilling Pipe

3.2.14 Clearing of Spillway

3.3 ACCEPTANCE

-- End of Section Table of Contents --

SECTION 33 40 02 Page 2

SECTION 33 40 02

SPILLWAY SYSTEM

PART 1 GENERAL

1.1 SCOPE

The Contractor shall furnish all labor, equipment, materials and perform all operations in connection with constructing new spillway systems at Eagle Island Disposal Area, Cell No 3, to include but not be limited to furnishing and installing the following: spillway riser, spillway foundation pad, spillway discharge pipe, timber pipe support frames and timber piles, walkway, and stoplogs. The locations and elevations of work shall be as shown or indicated on the drawings.

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 NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI/ASME B16.5 (2009) Pipe Flanges and Flanged Fittings

ANSI A14.3 (2000) Ladders - Fixed - Safety Requirements

ASTM INTERNATIONAL (ASTM)

ASTM A 36/A 36M (2008) Standard Specification for Carbon Structural Steel

ASTM A 123/A 123M (2009) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A 153/A 153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A 307 (2007b) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM A 325 (2010) Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength

ASTM A 536 (1984; R 2009) Standard Specification for Ductile Iron Castings

ASTM A 572/A 572M (2007) Standard Specification for High-Strength Low-Alloy Columbium-Vanadium

SECTION 33 40 02 Page 3

Structural Steel

ASTM A 615/A 615M (2009b) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

ASTM D 698 (2007e1) Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/cu. ft. (600 kN-m/cu. m.))

ASTM D 2657 (2007) Heat Fusion Joining Polyolefin Pipe and Fittings

ASTM F 714 (2008) Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Outside Diameter

ASTM F 593 (2002; R 2008) Stainless Steel Bolts, Hex Cap Screws, and Studs

AMERICAN WELDING SOCIETY (AWS)

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

AMERICAN WOOD-PRESERVERS' ASSOCIATION (AWPA)

AWPA U1 (2009) Lumber, Timber, Bridge Ties and Mine Ties - Preservative Treatment by Pressure Processes

AWPA M4 (2008) Standard for the Care of Preservative-Treated Wood Products

NORTH CAROLINA DEPARTMENT OF TRANSPORTATION (NCDOT)

NCDOT (2006) Standard Specifications for Roads and Structures-English

THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)

SSPC Paint 16 (2006) Paint Specification No. 16 Coal Tar Epoxy-Polyamide Black (or Dark Red) Paint

SSPC PS 11.01 (1982; E 2004) Black (or Dark Red) Coal Tar Epoxy-Polyamide Painting System

SSPC SP 10/NACE No. 2 (2007) Near-White Blast Cleaning

1.3 SUBMITTALS

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

submittals not having a "G, A" designation are for information only. When used, a designation following the "G, A" 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 Preconstruction Submittals

Thickness; G, A

SECTION 33 40 02 Page 4

Coating System; G, A

Concrete; G, A

SD-02 Shop Drawings

Reinforcing Steel

Steel - Spillway Riser Modifications; G, A

Spillway Pipe; G, A

Ladders; G, A

Confined Space Entry and Rescue System Equipment; G, A

SD-03 Product Data

Screen stainless steel mesh; G, A

12-inch High Density Polyethylene (HDPE) Pipe; G, A

Access Hatch Door; G, A

The Contractor shall submit to the Contracting Officer and/or his or her designated representative certificates, invoices or catalog cuts attesting that the following materials furnished meet the required specifications:

DIP pipe, HDPE pipe, treated lumber, concrete, paint, and steel hardware.

1.4 MEASUREMENT AND PAYMENT

1.4.1 Spillway System

There will be no direct measurement of work performed in connection with the construction and installation of the spillway system (spillway riser, spillway foundation pad, spillway discharge pipe, french drain, timber pipe support frames and timber piles, walkway, stoplogs, cofferdam, dewatering, and other related items). The appropriate contract lump sum price for "SPILLWAY 7", "SPILLWAY 8", and "SPILLWAY 9" in the BIDDING SCHEDULE shall constitute full compensation for furnishing all labor, materials, plant, equipment, tools, supplies, and incidentals necessary to complete the work included in this section and detailed on the plans.

1.4.2 Dike Embankment Repair

All costs for dike embankment repair work required to install new spillway risers, DIP pipe and HDPE pipe shall be considered incidental to and included in the appropriate contract lump sum price for "SPILLWAY 7", "SPILLWAY 8", and "SPILLWAY 9" , as listed in the Bidding Schedule.

PART 2 PRODUCTS

2.1 SPILLWAYS

2.1.1 Government Furnished Property

The Contractor shall utilize Government Furnished Property stored onsite.

A list of Government Furnished Property is located in specification section

SECTION 33 40 02 Page 5

01 10 00.10 38 SUPPLEMENTARY SPECIAL CONTRACT REQUIREMENTS. The Contractor shall supplement the Government Furnished Property as needed to complete contract requirements for construction of Spillways 7, 8 and 9. The Contractor shall modify each steel spillway base. The existing 1/2-inch steel plate shall be removed and replaced with new 1/2-inch steel plate.

New steel plate shall be fabricated to allow connection of 12-inch HDPE pipe and 12-inch DIP pipe.

2.1.2 Steel

All structural steel members required for fabrication of the spillway riser shall conform to ASTM A 36/A 36M and shall be the size and shape as shown on the drawings. The steel used shall be suitable for welded and bolted construction.

2.1.3 Coating System

All new spillway riser sections shall be thoroughly cleaned, conforming to SSPC SP 10/NACE No. 2, and then the entire structure, inside and out, including all hard-to-reach corners, shall be completely coated with a coal tar epoxy-polyamide paint in two (2) coats totaling sixteen (16) mils (minimum). The coating system shall conform to SSPC PS 11.01.

2.1.3.1 Paint

The paint used shall conform to SSPC Paint 16.

2.1.3.2 Application Equipment

Application by heavy-duty conventional air atomization spray equipment is recommended unless otherwise specified by paint manufacturer. Second coat shall be applied within 72 hours of application of first coat.

2.1.3.3 Weather Conditions

Temperature and humidity are critical for the cure of coal tar epoxy paints. Do not apply such paints when the ambient temperature is below 60 degrees F or when the ambient temperature is not at least 5 degrees F above the dew point.

2.1.3.4 Surface Temperature/Shading

When the steel substrate or an applied coat is exposed to sunlight and is expected to have surface temperatures above 125 degrees F, either the surfaces shall be shaded by overhead cover or the intercoat drying time shall be adjusted downward to avoid poor intercoat adhesion. The curing time between coats should not exceed one (1) day in hot weather.

2.1.3.5 Color

The first coat shall be dark red and shall be 8 mils minimum dry thickness.

The second coat shall be black and shall be 8 mils minimum dry thickness.

2.1.3.6 Thickness

Caution:

Excessive film thickness can result in solvent entrapment and film cracking. Epoxies which are applied excessively thick tend to crack and disbond due to internal stresses within the coating

SECTION 33 40 02 Page 6 because of shrinkage during the curing reaction. The total dry film thickness of the two coats of coal tar epoxy shall not exceed 60 mils. The dry film thickness of anyone coat shall not exceed 40 mils. Coats exceeding these thicknesses shall be stripped off and redone at the Contractor's expense.

2.1.3.7 Manufacturer's Recommendations

The Contractor shall follow all instructions and recommendations of the paint manufacturer regarding those items which are not spoken to by these specifications or by SSPC PS 11.01.

2.1.4 Spillway Riser Ladder

The Contractor shall provide a ladder to each spillway riser structure, which will be located on the interior of the backside (side with 1/2-inch plate steel) of the riser structure. The ladder will provide access to the interior of the spillway riser structure for purposes of access to stoplogs and maintenance.

2.1.4.1 Ladders

The Contractor shall provide fixed vertical ladders for each spillway riser as indicated on the drawings. The fixed vertical ladders shall not be less than 16 inches wide, measured inside the rails, and shall have rungs not less than 7/8-inch in diameter, equally spaced on approximately 12-inch centers. The vertical ladders, including fastenings, shall be designed for a total load of 1,000 pounds. Ladders shall have an extension that extends a minimum of 3-feet above the grating of the top of the spillway riser.

Ladders shall be fabricated from steel conforming to ASTM A 36/A 36M and shall be hot dipped galvanized after fabrication to meet ASTM A 123/A 123M.

Ladders shall be fabricated to meet the requirements of ANSI A14.3.

2.1.4.2 Confined Space Entry and Rescue System Equipment

The Contractor shall provide confined space entry and rescue system equipment for each spillway riser as indicated on the drawings. The equipment shall consist of: 1) a base that is bolted to the top horizontal steel beam of the bridge support, 2) a mast that will provide an offset from the base to the center of the hatch opening, 3) the mast shall include a mast extension component , if necessary, to provide a 7-foot clearance between the end of the mast and the top surface of the spillway riser, and 4) self retracting winch with a minimum of 50 feet of 3/16-inch galvanized cable. The confined space entry and rescue system equipment shall be manufactured to comply with the requirements of USACE EM 385-1-1 and ASSE/SAFE A10.32.

2.1.4.3 Access Hatch Door

The Contractor shall provide stainless steel access hatch door for each spillway riser as indicated on the drawings. Include lifting mechanism, automatic hold open arm, slam lock with handle, and flush lift handle with red vinyl grip. Use automatic hold open arm that locks in the 90 degree position. Use door constructed with ¼ inch diamond plate cover capable of withstanding a live load of 300 pounds per square foot. Provide stainless steel cylinder lock with two keys per lock. Key all the locks the same.

SECTION 33 40 02 Page 7

2.2 SPILLWAY PIPE

The new spillway discharge pipe placed through the embankment at Spillway 7 shall be SDR 11 HDPE pipe. The new spillway pump out pipe for Spillways 7, 8 and 9 shall be ductile iron pipe and shall comply with the requirements of Section 33 34 00 FORCE MAINS AND INVERTED SIPHONS; SEWERS.

The existing 30-inch HDPE pipe for Spillways 7 and 8 shall be removed during demolition of the existing timber support frames and reinstalled after new timber support frames have been constructed. If additional HDPE is needed it shall meet the requirements of subparagraph High Density Polyethylene (HDPE) Pipe.

2.2.1 High Density Polyethylene (HDPE) Pipe

The HDPE pipe shall be 12-inch SDR 11-IPS high density polyethylene (HDPE) plastic meeting, as a minimum, the requirements of ASTM F 714. The Contractor shall provide certification that the plastic pipe meets these requirements.

2.2.2 Screen for Pipe Opening

The pipe openings in the spillway boxes shall have a wire mesh attached to the flanges. The screen shall be constructed of stainless steel Type 304 material. Opening size shall be 1-inch square and wire diameter shall be 0.1200-inch. Wire mesh shall be attached to the openings of the pump-out pipes (Spillway 7, 8 and 9) and gate valve opening (Spillway 7 only).

2.3 HARDWARE

2.3.1 Spillway Riser Hardware

Hardware (nuts, bolts, and washers) for bolting spillway riser sections together, for spillway riser assembly, and attaching spillway riser to spillway foundation pad shall be suitable for its intended use and shall (as a minimum) conform strength wise to ASTM 307, and shall be stainless steel meeting ASTM F 593 for bolts and ASTM F594 for nuts.

2.3.2 Steel Walkway Hardware

Hardware (nuts, bolts, and washers) for bolting steel walkway shall be suitable for its intended use and shall (as a minimum) conform strength wise to ASTM A 325, and shall be stainless steel meeting ASTM F 593 for bolts and ASTM F594 for nuts.

2.3.3 Timber Pipe Support and Stoplog Hardware

Hardware (nuts, bolts, and washers) for bolting timber pipe support frames and lag screws for stoplogs shall be suitable for its intended use and shall (as a minimum) conform strength wise to ASTM A 307, and shall be galvanized. Galvanized hardware shall be galvanized in accordance with

ASTM A 153/A 153M.

2.4 PIPE SUPPORT FRAMES

All lumber shall be treated in accordance with AWPA U1 (.40 pcf retention, waterborne preservative, for ground contact) and shall be S4S. Wood shall be No.2 Southern Pine or approved equal. Area of treated wood exposed by cutting or drilling shall receive field treatment of preservatives in accordance with AWPA M4.

SECTION 33 40 02 Page 8

2.5 WALKWAY

Structural steel members required for fabrication of the walkway and supporting columns shall conform to ASTM A 572/A 572M, Grade 50 and shall be the size and shape as shown on the drawings. The steel used shall be suitable for welded and bolted construction. All steel members of the walkway and supporting columns shall be hot dipped galvanized in accordance with ASTM A123/A123M.

2.6 STOPLOGS

Stoplogs shall be tongue and groove (T&G) lumber, Southern Pine No. 2 or approved equal, treated in accordance with AWPA U1 (2.5 pcf retention, waterborne preservative) after fabrication. Untreated No. 2 white oak may also be used.

2.7 CONCRETE

2.7.1 Spillway Riser Foundation and Walkway Support Pad

Concrete shall be NCDOT Class "AA" concrete with a minimum 28 day compressive strength of 4500 PSI. Concrete, materials, placement, admixture, testing and sampling shall be in accordance with the NCDOT specifications. A minimum of three strength test cylinders shall be made by the Contractor for concrete placement. One cylinder shall be strength tested at 7 days and one at 28 days by the Contractor with the third held in reserve. Minimum concrete strength for erection of the spillway is 3000

PSI.

2.8 REINFORCING STEEL FOR SPILLWAY FOUNDATION AND WALKWAY SUPPORT PAD

Reinforcing steel for the spillway foundation pad shall be #4 deformed bars, conforming to ASTM A 615/A 615M, Grade 60 and shall conform to the size and spacing as shown on the drawings.

2.9 GEOTEXTILE

See drawings for geotextile placement requirements for the spillway foundation pad and in the backfill for the spillway pipe.

2.10 SATISFACTORY MATERIAL

Satisfactory material shall conform to the requirements of Section 31 01 00:

DIKE EMBANKMENT.

22.11 SPILLWAY RISER/DISCHARGE PIPE CONNECTION

The connection between plastic pipe and spillway riser shall consist of a polyethylene flange connector or stub end connector (SDR 11 rating) with a metal slip-on back-up ring (or back-up flange) which shall be stainless steel or ductile iron which has been hot-dipped galvanized. Ductile iron material shall meet ASTM A 536. The back-up ring shall be convoluted, rated at 150 lb., and conform to ANSI/ASME B16.5 vital dimensions.

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PART 3 EXECUTION

3.1 DEWATERING SYSTEM

The Contractor shall design and provide a dewatering system as needed to facilitate the work for installation of the new spillway systems. The dewatering system must be in place prior to excavation of the existing dike embankment. The dewatering system may include coffer dams, sheet pile walls, etc. The dewatering system shall not be removed until the spillway risers and pipes have been properly installed and backfilling operations are complete and approved by the Contracting Officer.

3.2 INSTALLATION OF NEW SPILLWAY RISER

The new spillway risers shall be installed and set plumb according to the manufacturer's specifications. The spillway riser and 12" diameter HDPE pipe and/or 12" diameter DIP pipe shall be connected in accordance with the manufacturer's specifications. The spillway and discharge pipe construction area shall be dewatered as necessary to facilitate the work.

The Contractor shall design and provide a dewatering system in accordance with paragraph DEWATERING SYSTEM.

3.2.1 Welding

Any welding required under this contract shall conform to the requirements of AWS D1.1/D1.1M for the type and size of welds and materials and types of welding to be used.

3.2.2 Fabrication Before Coating

All metal spillway riser fabrication, including but not limited to, bolt holes, welding, etc., shall be completed prior to sandblasting and painting.

3.2.3 Fit

The mating ends of spillway sections shall be uniform and flush.

3.2.4 Repairs to Coating

All repairs to the coating system of the spillway riser sections shall be in accordance with SSPC PS 11.01.

33.2.5 Pipe Flange Assembly

The plastic pipe flange assembly shall be properly aligned with the bolting pattern on the spillway riser face prior to bolting. Before bolting, a layer of bituminous mastic shall be applied to the face of the spillway riser for a width of 3" all the way around the large diameter hole in the riser. Attach with 1-1/4" 7UNC-2A x 6" long bolts, nuts, and washers, stainless steel. The bolts shall be drawn up evenly to ensure a watertight connection. Under no circumstances should the bolts be used to pull the two components together to overcome a gap or misalignment. Bolted joints shall be left exposed for 24 hours and then retightened before being covered.

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3.2.6 High Density Polyethylene Pipe

3.2.6.1 Joining

Plastic discharge pipe shall be joined by the thermal butt-fusion (or heat-fusion) method as outlined generally in ASTM D 2657, and specifically in the manufacturer's recommendations. The Contractor shall provide manufacturer's certification that the method used for pipe joining will provide a watertight joint. The butt-fusion joining shall be performed by qualified personnel in accordance with the procedures recommended by the pipe manufacturer such that a solid continuous plastic pipe free from leaks, cracks, and other deficiencies is produced.

3.2.6.2 Handling and Storage

All pipe shall be handled and stored in accordance with the manufacturer's recommendations.

3.2.6.3 Cleanliness and Watertightness

Pipe joints and flange assemblies shall be kept free from dirt and other foreign matter and shall be watertight.

3.2.6.4 Thermal Expansion and Contraction

To minimize contraction and expansion due to temperature, the HDPE discharge pipe shall be placed on pipe support frames and allowed to stand uncovered for 24 hours.

3.2.7 Foundation Preparation

Special care shall be taken during the installation of the spillway risers, DIP pump out pipe, and HDPE discharge pipe so as to minimize any future settlement or damage that could affect the proper and effective functioning of the spillway systems (spillway riser and discharge pipe).

The area to be excavated for the spillway foundation pad shall provide a dry, firm, and uniform foundation for the pad. It may be necessary to dewater and/or undercut the spillway foundation area.

3.2.8 Timber Piles for Pipe Support Frames

The 6x6 posts for the pipe support frames shall be installed as shown on the drawings. The Contractor shall install the piles using a method that does not cause damage to the piles. Jetting of piles is prohibited.

3.2.9 Placing Pipe

Each section of pipe shall be carefully examined before being laid, and defective or damaged pipe shall not be used. Pipe shall be laid to the grades and alignment indicated.

3.2.10 Approval Prior to Backfilling

The new spillway system (including piping) shall be inspected and approved by the Contracting Officer and/or his or her designated representative prior to backfilling. No backfilling of any spillway system component shall be done without the approval of the Contracting Officer and/or his or

SECTION 33 40 02 Page 11 her designated representative.

3.2.11 Pipe Bedding

The bedding surface for pipe laid on the ground shall provide a firm foundation of uniform density. The pipe shall be carefully bedded in the soil foundation that has been shaped and rounded to conform to the lowest one-fourth of the outside portion of pipe for the entire length of the pipe that has ground contact. If over-excavated, the bedding shall be filled to grade and tamped.

3.2.12 French Drain

A french drain shall be installed for the spillway pipe. See drawings for french drain location and details.

3.2.13 Backfilling Pipe

After the pipe has been properly bedded, satisfactory material (as defined in Section 31 01 00: DIKE EMBANKMENT), at a moisture content that is + or - 5% from optimum moisture content obtained from the density testing in accordance with ASTM D 698, shall be placed along both sides of pipe in layers not exceeding 6 inches in compacted depth. The backfill shall be brought up evenly on both sides of pipe. The fill shall be thoroughly compacted under the haunches of the pipe. Each layer shall be compacted in accordance with Section 31 01 00: DIKE EMBANKMENT. The pipe shall be supported by frames and timber piles where the pipe is not on the ground.

3.2.14 Clearing of Spillway

The spillway shall be cleared of any soil, debris, or other matter that will interfere with its proper functioning, before stoplogs are placed.

All stoplogs shall be positively seated.

3.3 ACCEPTANCE

An inspection of the spillway installation will be performed by the Government prior to placement of backfill. The inspection will include but not be limited to the following: verifying that all soil and debris has been removed from riser, inspecting for damage to riser coating, inspecting for proper stoplogs and proper seating of same, and verifying use of specified lumber and hardware. Another inspection for final acceptance will be made at the time of final completion of all work under the contract.

Defects found during either inspection shall be corrected by the Contractor prior to acceptance.

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