W912P826BA002_AM0002.pdf

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 electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER.

If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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.)

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

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

16C. DATE SIGNED

Previous edition unusable STANDARD FORM 30 (REV. 11/2016) Prescribed by GSA FAR (48 CFR) 53.243

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

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

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

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X) 9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

Summary of Changes

1. General Comment: Change the Description and Magnitude of Work to the following: “The work consists of furnishing one fully crewed and equipped hydraulic pipeline cutterhead dredge for the removal and satisfactory disposal of shoal material within any combination of the following Dredging Regions: Berwick Bay Harbor, Berwick Lock Forebay, Tidewater

Point, Morgan City Docks East, 20 Grand Point, GIWW vicinity of Mile 99, Wax Lake Outlet, GIWW vicinity of Bayou Shaffer, Port Allen Lock Forebay, Three Rivers, Baton Rouge

Harbor (Devil’s Swamp), Old River Lock Forebay, Old River Lock Tailbay, Atchafalaya River

Bar Channel, Atchafalaya River Bay Channel, and the Atchafalaya River Crewboat Cut. Work may be required in other areas of the New Orleans District and the Red River in the Vicksburg

District.”

2. General Comment: Throughout the solicitation, change ““Dredging” Item” to “Dredging items”.

3. General Comment: Throughout the solicitation, change “Dredging Item” to “Dredging Items”.

4. General Comment: Throughout the solicitation, change “Bid Item, “Dredging”” to “Bid Items, “Dredging: Atchafalaya Basin” and “Dredging: Atchafalaya River””.

5. General Comment: Throughout the solicitation, change “Additional Pumping Capability for

Dredging Item 0003” to “Additional Pumping Capability”.

6. General Comment: Throughout the solicitation, change “Mobilization and Demobilization of

Additional Pumping Capability Equipment for Item 0007” to “Mobilization and

Demobilization of Additional Pumping Capability Equipment for Item 0008”.

7. Solicitation Letter: Delete “All work under these specifications shall be performed in accordance with the provisions of EM 385-1-1 “Corps of Engineers Safety and Health

Requirements Manual”, dated 15 March 2024” and replace with “All work under these specifications shall be performed in accordance with the provisions of EM 385-1-1 “Safety and

Occupational Health Requirements”, latest edition.”

8. Standard Form 1442, Box 10: Delete “In accordance with FAR 36.204(F) Disclosure of the

Magnitude of Construction Projects, the estimated price range of this project is between

$25,000,000 and $50,000,000”. Also, add the following: “*See Section 00 73 00, Paragraph

3.6 “Commencement, Prosecution, and Completion”. Also, add the following: “**See Section

00 73 00, Paragraph 3.2, “Prosecution, Option and Completion”.

9. Standard Form 1442: In Box 11, delete “5” and replace with “*”.

10. Project Table of Contents: Add Section 35 20 23.23 24 entitled “Hydraulic Dredging –

Atchafalaya River Bar, Bay, and Crewboat Cut Dredging Region”.

11. Section 00 10 00, paragraph 1.1 “Bidding Schedules”: Delete this paragraph (Lot One thru Lot

Five) and replace with the attached Bidding Schedules (Lot One thru Lot Four).

12. Section 00 10 00, paragraph 1.4 “Contract Period / Ordering Period”: In the first sentence, delete “24 month period” and replace with “12-month period”.

13. Section 00 10 00, paragraph 1.7 “Bidder Qualifications”, subparagraph (b)(iii): Delete “from the successful bidder” and replace with “after award of each task order”.

14. Section 00 10 00, paragraph 1.11 “Minimum and Maximum Contract Value and Task Order

Value”, subparagraph a: In the first and second sentences, delete “$10,000.00” and replace with

“$30,000,000.00”. In the third sentence, delete “$40,000,000.00” and replace with

“$70,000,000.00”.

15. Section 00 10 00, paragraph 1.11 “Minimum and Maximum Contract Value and Task Order

Value”, subparagraph b: In the second sentence, delete “$40,000,000.00” and replace with

“$70,000,000.00”.

16. Section 00 72 00, Clause 52.216-18 “Ordering”, subparagraph (a): In the second sentence, delete “twenty-four (24) months” and replace with “twelve (12) months”.

17. Section 00 72 00, Clause 52.216-19 “Order Limitations”: In subparagraph (1) and (2), delete

“$40,000,000.00” and replace with “$70,000,000.00”. In subparagraph (3), delete “twenty-four

(24) months” and replace with “twelve (12) months”.

18. Section 00 72 00, Clause 52.217-9 “Option to Extend the Term of the Contract”: In subparagraph (c), delete “thirty (30) months” and replace with “eighteen (18) months”.

19. Section 00 73 00, paragraph 3.1 “Delivery of Plant”: In the first sentence, delete “Berwick Bay

Harbor” and replace with “Atchafalaya River Crewboat Cut”.

20. Section 01 30 00, paragraph 1.12 “As-Built Drawings”, subparagraph g: Add the following as subparagraph (10): “(10) Disposal area surveys and discharge points where applicable.”

21. Section 01 33 00 Attachment - “Submittal Register”: Delete the submittal register and replace with the attached “Submittal Register”.

22. Section 01 57 20.00 10, paragraph 1.3.1 “Environmental Protection”: Add the following to the end of the paragraph: “Additional environmental requirements specific to a particular dredging region will be located in the applicable Dredging Region Section(s).”

23. Section 35 01 50.73, paragraph 3.1.5 “Disposal Area Surveys”: Add the following to the end of the paragraph: “Additional disposal area survey requirements specific to a particular dredging region will be located in the applicable Dredging Region Section(s).”

24. Section 35 01 50.73, paragraph 3.1.8 “Collecting, Recording, Processing, and Transmitting”: In the ninth sentence, delete “three days” and replace with “24 hours”.

25. Section 35 20 23.23, paragraph 1.1 “Scope”: In the first sentence, delete “not less than 24 inches inside diameter (ID) nor greater than 30 inches (ID)” and replace with “not less than 27 inches inside diameter”.

26. Section 35 20 23.23, paragraph 1.2.3 “Dredging Item”: Delete the first two sentences and replace with the following: “All costs for a fully operated cutterhead dredge shall be included as applicable in the contract unit price per hour in the “Dredging: Atchafalaya Basin” and

“Dredging: Atchafalaya River” items on the bidding schedule. Payment for a fully operated cutterhead dredge will be made at the contract unit price per hour for “Dredging: Atchafalaya

Basin” or “Dredging: Atchafalaya River” at the pay times stipulated in the following subparagraphs.”.

27. Section 35 20 23.23, paragraph 1.5 “Dredge Crew”, subparagraph e: Add the following column to the table.

Shore Crew Required when Shore

Pipeline is Used

1 – Foreman

1 – Dozer/Marsh Buggy Operator

28. Section 35 20 23.23, paragraph 2.1.2 “Size and Equipment of Dredge Plant”, subparagraph a:

Delete the first and second sentences and replace with the following: “For the “Dredging:

Atchafalaya Basin” item, the dredge plant length measured horizontally from the digging spud to the cutterhead's location while dredging at a channel depth of 51 feet, measured from the water surface, shall be no less than 262 feet to meet the swing requirements specified in subparagraph (d). For the “Dredging: Atchafalaya River” item, the dredge plant length measured horizontally from the digging spud to the cutterhead's location while dredging at a channel depth of 30 feet, measured from the water surface, shall be no less than 365 feet to meet the swing requirements specified in subparagraph (d). See the attached Figure 1:

Minimum Dredge Plant Length for “Dredging: Atchafalaya Basin” Work and Figure 2:

Minimum Dredge Plant Length for “Dredging: Atchafalaya River” Work at the end of this section.”

29. Section 35 20 23.23, paragraph 2.1.2 “Size and Equipment of Dredge Plant”, subparagraph d:

In the first sentence, delete “The cutterhead ladder” and replace with “For the “Dredging:

Atchafalaya Basin” item, the cutterhead ladder”.

30. Section 35 20 23.23, paragraph 2.1.2 “Size and Equipment of Dredge Plant”: Add the following as subparagraph j: “j. For the “Dredging: Atchafalaya River” item, the cutterhead ladder shall be of sufficient length to provide a uniformly dredged channel depth of 30 feet, measured from the water surface. The spuds shall be of sufficient length to perform dredging operations in water depths from 11 to 35 feet. The dredge shall be capable, from each setting of the spud, of dredging a channel at least 400 feet wide, while swinging through an arc of 35 degrees to either side of the centerline of the cut (total arc 70 degrees or less) while at a depth of 30 feet, measured from the water surface. The Contractor shall fulfill the requirements of this subparagraph and subparagraph (a) while achieving or exceeding the minimum production rate requirements listed in the tables at the end of the applicable Dredging Region Section(s).”

31. Section 35 20 23.23, paragraph 2.1.4 “Dredge Discharge Pipeline”, subparagraph (c): Delete the first sentence. Also, in the second sentence, delete “This” and replace with “The”.

32. Section 35 20 23.23, paragraph 2.1.4 “Dredge Discharge Pipeline”, subparagraph (d): Delete the first sentence.

33. Section 35 20 23.23, paragraph 2.1.4 “Dredge Discharge Pipeline”, subparagraph (e): Delete the paragraph in its entirety and replace with the following:

“(e) The Contractor shall provide the necessary shore pipeline, and all equipment associated with it, to accomplish the work. The shore pipeline and associated equipment shall be considered as part of the dredge attendant plant. The shore pipeline shall be complete with a Y-valve including a spreader at the end of each discharge point. The

Contractor shall provide construction equipment for conducting all shore operations, as deemed appropriate by the Contractor to accomplish the said work. The Contractor's decision for using any such equipment shall be based on his/her evaluation of the disposal site, for the determination of equipment suitability, prior to mobilization of such equipment and commencement of dredging. The Contractor shall minimize use of heavy equipment within wetland development sites. The Contracting Officer's Representative will designate authorized access corridors for heavy equipment use within these sites. The equipment required to handle and place shore pipeline shall be in good operating condition at all times regardless of the pay status of the dredge.”

34. Section 35 20 23.23, paragraph 2.1.4 “Dredge Discharge Pipeline”: Add subparagraphs (g) and

(h) as follows:

“(g) For the "Dredging: Atchafalaya Basin" Item, the Contractor shall have a minimum of

3,000 feet of submerged pipeline and shall provide 7,500 feet of serviceable floating pipeline.

(h) For the “Dredging: Atchafalaya River” Item, the Contractor shall provide 20,000 feet of serviceable floating, submerged, or shore pipeline.”

35. Section 35 20 23.23: Add the following as paragraph 2.1.9 entitled “Global Positioning System

(GPS) Equipment”.

“2.1.9 Global Positioning System (GPS) Equipment

The crew boats and picket boat shall be equipped with Global Positioning (GPS) equipment capable of using 12 satellites simultaneously. The GPS unit shall be fully gasketed for exposure protection and differential ready with a beacon receiver. The unit shall have a minimum of 250 alphanumeric waypoints and a minimum of 20 reversible routes and waypoints capability. In addition, the unit shall have electronic charting with inland and offshore coverage using the most current imagery available.”

36. Section 35 20 23.23, paragraph 3.1.3.1 “Dredging in Secondary Regions”: Delete the third sentence and replace with the following: “Payment for work performed in secondary dredging regions will be made at the contract unit price for “Dredging: Atchafalaya Basin” at pay times described in the paragraph entitled “Dredging Items”.”

37. Section 35 20 23.23, paragraph 3.1.4 “Order of Work”: Add subparagraph e as follows:

“e. Within 48 hours after issuance of a draft assignment, the Contractor must submit a detailed dredge cut plan as a submittal to be reviewed and approved by the Government.

Each cut plan must include the following, at a minimum:

(1) The cut plan shall be overlaid on the corresponding plate(s).

(2) The cut plan shall include the swing width, assigned depth, face height, and cross-sectional quantity (cy/ft).

(3) The cut plan shall state whether each cut is "standard" or "non-standard".

(4) A schedule that shall include the estimated start and end date for the assignment and the estimated hours to complete the assignment.”

38. Section 35 20 23.23 Attachment – “Figure 1: Minimum Dredge Plant Length”: Delete Figure 1 and replace with the attached Figure 1 and Figure 2.

39. Section 35 20 23.23 01 General Comment: For Stout’s Pass dredging, interpolate gage reading at the dredging location using Gage 03565 and Gage 03780.

Gage 03565 “Chicot Pass near West Fork” (Atchafalaya River Mi. 84.6):

0.0' GAGE = -1.04’ MLG = -3.22’ NAVD88 (2009.55)

Gage 03780 “Lower Atchafalaya River at Morgan City” (Atchafalaya River Mile 121.1):

0.0' GAGE = 0.78' MLG = -1.40' NAVD88 (OPUS 2021 / GEOID12B)

40. Sections 35 20 23.23 01 through 35 20 23.23 06 paragraph 1.2 “Measurement and Payment”:

In the second sentence, delete “Dredging” and replace with “Dredging: Atchafalaya Basin”.

41. Sections 35 20 23.23 01, 35 20 23.23 02, 35 20 23.23 03, and 35 20 23.23 06, paragraph 3.3

“Minimum Production Rate Requirements” and Sections 35 20 23.23 04 and 35 20 23.23 05, paragraph 3.2 “Minimum Production Rate Requirements”: In subparagraph b, delete

“Dredging” and replace with “Dredging: Atchafalaya Basin”.

42. Sections 35 20 23.23 01 and 35 20 23.23 02 , paragraph 3.3 “Minimum Production Rate

Requirements” and Section 35 20 23.23 04, paragraph 3.2 “Minimum Production Rate

Requirements”: In subparagraph a, delete the minimum production rate table and replace with the following:

Dredge Discharge Size

(ID, Inches)

Submerged Pump Minimum Output

(CY/HR)

27 NO 1346

27 YES 1615

30 or greater NO 1662

30 or greater YES 2205

43. Section 35 20 23.23 03, paragraph 3.3 “Minimum Production Rate Requirements” and Section

35 20 23.23 05, paragraph 3.2 “Minimum Production Rate Requirements”: In subparagraph a, delete the minimum production rate table and replace with the following:

Dredge Discharge Size

(ID, Inches)

Submerged Pump Minimum Output

(CY/HR)

27 NO 673

27 YES 1615

30 or greater NO 831

30 or greater YES 2205

44. Section 35 20 23.23 05 General Comment: When dredging near the intersection of the

Mississippi River and Baton Rouge Harbor (Devil’s Swamp), interpolate the gage reading at

Mi. 235.0 using Gage 01145 and Gage 01160.

Gage 01160 “Mississippi River at Baton Rouge” (Mississippi River Mile 228.4):

0.0' GAGE = 0.0’ NGVD29 = -0.71’ NAVD88 (OPUS 2019 / GEOID 12A)

Gage 01145 “Mississippi River near St. Francisville” (Mississippi River Mile 260.3):

0.0' GAGE = 0.42’ NGVD29 = 0.0’ NAVD88 (OPUS 2010 / GEOID 12A)

When dredging further back into Baton Rouge Harbor (Devil’s Swamp), use the gage located at the northeast corner of the Baton Rouge Terminal Dock at Sta. 136+88.

0.0’ Gage = 0.0’ NGVD

45. Section 35 20 23.23 06, paragraph 3.3 “Minimum Production Rate Requirements”, subparagraph a: Delete the production rate tables and replace with the following:

OLD RIVER LOCK TAILBAY

MINIMUM PRODUCTION RATE REQUIREMENTS

Dredge Discharge Size

(ID, Inches)

Submerged Pump Minimum Output

(CY/HR)

27 NO 1346

27 YES 1615

30 or greater NO 1662

OLD RIVER LOCK FOREBAY MINIMUM PRODUCTION RATE REQUIREMENTS

Dredge Discharge Size

(ID, Inches)

Submerged Pump Minimum Output

(CY/HR)

27 NO 673

27 YES 1615

30 or greater NO 831

46. Add the attached Section 35 20 23.23 24 entitled “Hydraulic Dredging - Atchafalaya River Bar, Bay, and Crewboat Cut Dredging Region”.

47. Section 35 20 23.33, paragraph 1.2 “Measurement and Payment”: In the last sentence, delete

“Dredging” and “Option Dredging” and replace with “dredging”

Instructions to Bidders

QUESTION AND ANSWER VIA PROJNET

ALL SUBMITTED QUESTIONS FOR THIS PROJECT AND THE ANSWERS PROVIDED

SHALL BE VIEWED IN BIDDER INQUIRY IN PROJNET AT

(https://www.projnet.org) Technical inquiries and/or questions relating to this solicitation shall be submitted via Bidder Inquiry in ProjNet at (https://www.projnet.org). The question period will close on August 21 2026 at 11:59 p.m. and bid submissions will be due August 31, 2026 at 10:00 a.m. local time.

To submit or review inquiry items, prospective vendors will need to use the Bidder Inquiry Key presented below and follow the instructions listed below the key for access. Emailed inquiries and/or questions will not be accepted. A prospective vendor who submits a comment / question will receive an acknowledgment of their comment/question via email. Another email to the same address will notify the prospective vendor once the reply is available for viewing.

The Bidder Inquiry Key is: RE6C9R-Y7DRI5

Specific Instructions for First Time ProjNet Bid Inquiry Access:

1. From the ProjNet home page linked above, click on Quick Add on the upper right side of the screen.

2. Identify the Agency. This should be marked as USACE.

3. Key. Enter the Bidder Inquiry Key listed above.

4. Email. Enter the email address you would like to use for communication.

5. Click Continue. A page will then open saying that a user account was not found and will ask you to create one using the provided form.

6. Enter your First Name, Last Name, Company, City, State, Phone, Email, Secret Question, Secret Answer, and Time Zone. Make sure to remember your Secret Question and Answer as they will be used from this point on to access the ProjNet system.

7. Click Add User. Once this is completed you are now registered within ProjNet and are currently logged into the system.

Specific Instructions for Future ProjNet Bid Inquiry Access:

1. For future access to ProjNet, you will not be provided any type of password. You will utilize your Secret Question and Secret Answer to log in.

2. From the ProjNet home page linked above, click on Quick Add on the upper right side of the screen.

3. Identify the Agency. This should be marked as USACE.

4. Key. Enter the Bidder Inquiry Key listed above.

5. Email. Enter the email address you used to register previously in ProjNet.

6. Click Continue. A page will then open asking you to enter the answer to your Secret Question.

7. Enter your Secret Answer and click Login. Once this is completed you are now logged into the system.

https://www.projnet.org/

SOLICITATION NUMBER: W912P826BA002

NOTE: BIDDERS MAY SUBMIT BIDS BY ONLY ONE METHOD: A) ELECTRONIC

COMMERCE (EMAIL) OR BY 2) PHYSICAL SUBMISSION. BIDDERS SHALL LIMIT THE BID

SUBMITTAL TO ONE OPTION OR THE OTHER, NOT BOTH.

Electronic Submission of Bids/Proposals (Email):

The New Orleans District utilizes electronic commerce (Email) for receipt of electronic bids under this IFB solicitation. To submit an electronic commerce (Email) bid please follow these steps:

1. Send an email containing your name, email address and bid/proposal to the following emails associated with the IFB (MUST include all emails):

• ANGELA.C.DAY@USACE.ARMY.MIL

• CHRISTOPHER.NUCCIO@USACE.ARMY.MIL

2. ALL BIDS SUBMITTED BY EMAIL MUST CONTAIN THE SOLICITATION NUMBER IN

THE SUBJECT LINE.

3. Once the agency receives your bid/proposal at the above email addresses, you will then receive a confirmation email stating your bid/proposal was received. If a bidder does not receive a reply acknowledging receipt electronically from the New Orleans District, it is incumbent upon the bidder to seek confirmation from the issuing Contracting office by phone.

Note: The size limit for incoming emails is 35MB. Any bid/proposal over this size may not be accepted by the server and will constitute the bid not being received timely. Please note that embedded links, URLs, and other html language included may interfere with the USACE server security, which may cause emails to be removed prior to being received by the contracting office. Bidders are advised to refrain from including external links, embedded links, URLs, and other html language not germane to the proposal/bid. Please note it is a bidder’s responsibility, when transmitting its bid electronically, to ensure the receipt of its bid to the proper designee at the proper time. See FAR 14.304(b)(1)(i) regarding untimely electronic bids. Please note, MVN’s computer system firewall may cause a delay in receipt of emails, so be sure to allow ample time for possible delay. If your email would exceed 35MB you can use one of the following methods as a work-around:

• Use .zip files as attachments. Combine multiple files into a .zip file to compress file size prior to adding as an email attachment.

• Send multiple emails. Label each email with same subject line and indicate number of emails. For example: Smith Construction W912P826BAXXX (1 of 2) Smith Construction W912P826BAXXX (2 of 2).

mailto:KAREN.D.HARGRAVE@USACE.ARMY.MIL

Physical Submission of Bids:

Bidders may submit their bids by hand carrying or express mail to the New Orleans District Contracting Office in Room 172. Bidders are advised to allow adequate time to ensure timely submission of its bid. Traffic onto the New Orleans District campus may be delayed by trains blocking the entrance or security either at the gate and/or inside of the building. Express delivery may be utilized but it is incumbent upon the bidder to ensure bid delivery time and date is before the receipt of bid cutoff time. See FAR 14.304(b)(1)(ii) and (c).

Bid Opening:

This bid opening is currently scheduled for August 31, 2026 at 11:00 a.m. local time. The Contracting Officer and Contract Specialist will begin downloading bids at August 31, 2026 at 10:00 a.m. local time, which is the bid submission receipt cutoff time. All bids received after 10:00 a.m. will be considered late.

Audio Teleconference Bid Opening Information:

Instructions as well as any subsequent bid opening information will be provided on SAM.gov prior to the final closing date of this solicitation. Following the conclusion of the bid opening, an abstract of offers for unclassified acquisitions shall be available for public inspection via SAM.gov.

VITRUAL BID OPENING:

Dial in by phone +1 601-262-2433 Phone conference ID: 740 457 304#

Section 00 10 00, Paragraph 1.1 “Bidding Schedules”:

1.1 BIDDING SCHEDULES

SECTION 00 10 00 - BIDDING SCHEDULE

INDEFINITE DELIVERY, INDEFINITE QUANTITY (TASK ORDER) CONTRACT

ATCHAFALAYA BASIN, GULF INTRACOASTAL WATERWAY (GIWW) AND

MISCELLANEOUS PROJECTS CUTTERHEAD DREDGE

SOLICITATION NO. W912P826BA002

LOT ONE, 27 IN. INSIDE DIAMETER (ID) PUMP DISCHARGE WITHOUT SUBMERGED PUMP

BID

ITEM

DESCRIPTION ESTIMATED

QUANTITY

UNIT UNIT

PRICE

TOTAL PRICE

0001 INITIAL MOBILIZATION AND

INITIAL DEMOBILIZATION

1 JOB

OPTION

ADDITIONAL MOBILIZATION AND

DEMOBILIZATION

2 EACH TO BE NEGOTIATED PER

NON-CONSECUTIVE TASK

ORDER

0003 DREDGING: ATCHAFALAYA BASIN 2230 HOUR

0004 DREDGING: ATCHAFALAYA RIVER 6005 HOUR

0005 DREDGE TOWING SERVICE 450 MILE

0006 PICKET BOAT SERVICE 2565 HOUR

0007 PORT ALLEN LOCK FOREBAY

BUCKET DREDGING

1 JOB

0008 ADDITIONAL PUMPING

CAPABILITY

309 HOUR

0009 MOBILIZATION AND

DEMOBILIZATION OF ADDITIONAL

PUMPING CAPABILITY EQUIPMENT

FOR ITEM 0008

1 JOB

0010 FLOTATION CHANNEL EXCAVATION 10000 LINEAR

FOOT

0011 BIRD NESTING PREVENTION

MEASURES

300 DAY

TOTAL: LOT ONE BID

ATCHAFALAYA BASIN, GULF INTRACOASTAL WATERWAY (GIWW) AND

MISCELLANEOUS PROJECTS CUTTERHEAD DREDGE

SOLICITATION NO. W912P826BA002

LOT TWO, 27 IN. INSIDE DIAMETER (ID) PUMP DISCHARGE WITH SUBMERGED PUMP

DESCRIPTION ESTIMATED

QUANTITY

UNIT UNIT

PRICE

TOTAL PRICE

0001 INITIAL MOBILIZATION AND

INITIAL DEMOBILIZATION

1 JOB

OPTION

ADDITIONAL MOBILIZATION AND

DEMOBILIZATION

2 EACH TO BE NEGOTIATED PER

NON-CONSECUTIVE TASK

ORDER

0003 DREDGING: ATCHAFALAYA BASIN 1544 HOUR

0004 DREDGING: ATCHAFALAYA RIVER 5570 HOUR

0005 DREDGE TOWING SERVICE 450 MILE

0006 PICKET BOAT SERVICE 1775 HOUR

0007 PORT ALLEN LOCK FOREBAY

BUCKET DREDGING

1 JOB

0008 ADDITIONAL PUMPING

CAPABILITY

257 HOUR

0009 MOBILIZATION AND

DEMOBILIZATION OF ADDITIONAL

PUMPING CAPABILITY EQUIPMENT

FOR ITEM 0008

1 JOB

279 DAY

TOTAL: LOT TWO BID

ATCHAFALAYA BASIN, GULF INTRACOASTAL WATERWAY (GIWW) AND

MISCELLANEOUS PROJECTS CUTTERHEAD DREDGE

SOLICITATION NO. W912P826BA002

LOT THREE, 30 IN. OR GREATER INSIDE DIAMETER (ID) PUMP DISCHARGE WITHOUT

SUBMERGED PUMP

DESCRIPTION ESTIMATED

QUANTITY

UNIT UNIT

PRICE

TOTAL PRICE

0001 INITIAL MOBILIZATION AND

INITIAL DEMOBILIZATION

1 JOB

OPTION

ADDITIONAL MOBILIZATION AND

DEMOBILIZATION

2 EACH TO BE NEGOTIATED PER

NON-CONSECUTIVE TASK

ORDER

0003 DREDGING: ATCHAFALAYA BASIN 1805 HOUR

0004 DREDGING: ATCHAFALAYA RIVER 4862 HOUR

0005 DREDGE TOWING SERVICE 450 MILE

0006 PICKET BOAT SERVICE 2076 HOUR

0007 PORT ALLEN LOCK FOREBAY

BUCKET DREDGING

1 JOB

0008 ADDITIONAL PUMPING

CAPABILITY

250 HOUR

0009 MOBILIZATION AND

DEMOBILIZATION OF ADDITIONAL

PUMPING CAPABILITY EQUIPMENT

FOR ITEM 0008

1 JOB

243 DAY

TOTAL: LOT THREE BID

ATCHAFALAYA BASIN, GULF INTRACOASTAL WATERWAY (GIWW) AND

MISCELLANEOUS PROJECTS CUTTERHEAD DREDGE

SOLICITATION NO. W912P826BA0002

LOT FOUR, 30 IN. OR GREATER INSIDE DIAMETER (ID) PUMP DISCHARGE WITH SUBMERGED

PUMP

DESCRIPTION ESTIMATED

QUANTITY

UNIT UNIT

PRICE

TOTAL PRICE

0001 INITIAL MOBILIZATION AND

INITIAL DEMOBILIZATION

1 JOB

OPTION

ADDITIONAL MOBILIZATION AND

DEMOBILIZATION

2 EACH TO BE NEGOTIATED PER

NON-CONSECUTIVE TASK

ORDER

0003 DREDGING: ATCHAFALAYA BASIN 1131 HOUR

0004 DREDGING: ATCHAFALAYA RIVER 4381 HOUR

0005 DREDGE TOWING SERVICE 450 MILE

0006 PICKET BOAT SERVICE 1300 HOUR

0007 PORT ALLEN LOCK FOREBAY

BUCKET DREDGING

1 JOB

0008 ADDITIONAL PUMPING

CAPABILITY

188 HOUR

0009 MOBILIZATION AND

DEMOBILIZATION OF ADDITIONAL

PUMPING CAPABILITY EQUIPMENT

FOR ITEM 0008

1 JOB

219 DAY

TOTAL: LOT FOUR BID

SUBMITTAL REGISTER CONTRACT NO.

(ER 415-1-10)

TITLE AND LOCATION CONTRACTOR SPECIFICATION SECTION

CONTRACTOR

TYPE OF SUBMITTAL ACTION

A C T I V I T Y

N O

TRANS-

MITTAL

NO

I T E M

N O

SPECIFICATION

SECTION

NUMBER

DESCRIPTION OF

ITEM SUBMITTED

D A T A

D R A W I N G S

I N S T R U C T I

O N S

S C H E D U L E S

S T A T E M E N T S

R E P O R T S

C E R T I F I C A T E S

S A M P L E S

R E C O R D S

O M

M A N U A L S

I N F O R M A T I

O N

O N L Y

G O V E R N M E N T

A P P R O V E D

R E V I E W E R

SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

C O D E

DATE

SUBMIT

TO

GOVERN-

MENT

C O D E

DATE REMARKS

a. b. c. d. e. f. g. h. i. j. k. l. m. n. o. p. q. r. s. t. u. v. w. x. y. z. aa.

1 01 30 00 As-Built Drawings X X LAO & ODT-D

2 01 35 26 Accident Prevention Program X SS

3 01 57 20.00 10 Environmental Protection Plan X X ODT-E Attn: Jeff Corbino

4 35 01 50.73 Plan for Verification of Survey Equipment X X LAO & ODT-C

5 35 01 50.73 Calibration of Fathometer X X LAO & ODT-C

6 35 01 50.73 Calibration of Horizontal Positioning Equipment X X LAO & ODT-C

7 35 01 50.73 Before and After Dredging Cross Sections X X X LAO

8 35 01 50.73 Before and After Disposal Area Surveys X X X LAO & ODT-E

9 35 01 50.73 Quantity Computations X X LAO

10 35 01 50.73 Acceptance Profiles X X X LAO

11 35 20 23.23 Pump Curve(s) X X ODT-D

12 35 20 23.23 Cutterhead Dredge and Attendant Plant Data Sheet X X ODT-D

13 35 20 23.23 Plan of Operations for Utility Crossings X X LAO

14 35 20 23.23 Utility As-Builts and Surveys Received from the Owners X X X ODT-D

35 20 23.23 24 Aerial Photography Documentation X LAO & ODT-E16

35 20 23.23 24 g gPlan for Dredging and Disposal in the ADWMA X X LAO & ODT-E17

35 20 23.23 24 Bird Nesting Prevention Plan X X LAO & ODT-E18

35 20 23.23 24 Disposal Plan X X ODT-E Attn: Jeff Corbino19

35 20 23.23 24 Access Channel Surveys X X X LAO & ODT-E20

35 20 23.33 Letter of National Dredging Quality Management Program Certification X X ODT-D

ENG FORM 4288-R, JAN 97 EDITION OF MAR 95 IS OBSOLETE. PAGE _1_ OF _1_ PAGES (PROPONENT: CEMP-CE)

NOTE: THIS REGISTER IS NOT NECESSARILY COMPLETE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DEVELOPING A COMPREHENSIVE REGISTER.

ACTION

Atchafalaya Basin, GIWW, and Miscellaneous Projects. OM25065.

CLASSI-

FICATION

GOVERNMENT CONTRACTOR

SCHEDULE DATES

SECTION 01 33 00 ATTACHMENT

Section 01 33 00 Attachment, "Submittal Register"

35 20 23.23 Dredge Cut Plan ODT-DXX X

Section 35 20 23.23 Attachment

Figure 1: Minimum Dredge Plant Length for “Dredging: Atchafalaya Basin” Work

Figure 2: Minimum Dredge Plant Length for “Dredging: Atchafalaya River” Work

DI

GG

IN

G

S

PU

D

OPTIONAL IDLER BARGE

DREDGE

WATER SURFACE

51'

CUTTERHEAD

DREDGE PLANT LENGTH ≥ 262'

DI

GG

IN

G

SP

UD

OPTIONAL IDLER BARGE

DREDGE

WATER SURFACE

30'

CUTTERHEAD

DREDGE PLANT LENGTH ≥ 365'

IDIQ Atchafalaya Basin, GIWW & Misc. Projects CD OM25065AMEND

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23.23 24

HYDRAULIC DREDGING - ATCHAFALAYA RIVER BAR, BAY, AND CREWBOAT CUT DREDGING

REGION

PART 1 GENERAL

1.1 SCOPE

1.2 MEASUREMENT AND PAYMENT

1.2.1 Flotation Channel Excavation

1.2.2 Bird Nesting Prevention Measures

1.2.3 Non-Standard Dredging Conditions

1.3 EXISTING PIPELINES, STRUCTURES OR UTILITIES

1.4 AERIAL PHOTOGRAPHY DOCUMENTATION

PART 2 PRODUCTS

2.1 Skiff

2.2 Crew Boats

PART 3 EXECUTION

3.1 DREDGING

3.1.1 Atchafalaya River Bar Channel

3.1.2 Atchafalaya River Bay Channel

3.1.3 Atchafalaya River Crewboat Cut

3.1.4 Conditions for Dredging and Use of Disposal Areas Within the

Atchafalaya Delta Wildlife Management Area

3.2 DISPOSAL AREA OPERATIONS

3.3 ACCESS CHANNEL SURVEYS

3.4 DISPOSAL AREA SURVEYS

3.5 NESTING BIRDS

3.5.1 General

3.5.2 Reporting

3.5.3 No Work Distances

3.5.4 Bird Nesting Prevention Measures

3.5.5 Discovery of Bird Nests at the Work Site

3.6 MINIMUM PRODUCTION RATE REQUIREMENTS

3.7 HORIZONTAL AND VERTICAL CONTROL POINTS

3.7.1 Horizontal Control Points

3.7.2 Vertical Control Points

ATTACHMENTS:

Atchafalaya Bar, Bay, and Crewboat Cut Maintenance Dredging Plates

-- End of Section Table of Contents --

SECTION 35 20 23.23 24 Page 1

SECTION 35 20 23.23 24

HYDRAULIC DREDGING - ATCHAFALAYA RIVER BAR, BAY, AND CREWBOAT CUT DREDGING

REGION

PART 1 GENERAL

1.1 SCOPE

This section details specific requirements, which are in addition to the general requirements set forth in the specifications, for the Atchafalaya Bar, Bay, and Crewboat Cut Dredging Region. The work covered by this section consists of furnishing all labor, materials, and equipment, and performing all work required for dredging in the specified dredging region, except for those measures set forth in other technical portions of the specifications.

1.2 MEASUREMENT AND PAYMENT

No separate Measurement or Payment will be made for dredging region requirements as described herein. All costs for the work covered under this section shall be included in the contract unit price per hour in the "Dredging: Atchafalaya River" item on the bidding schedule except for "Flotation Channel Excavation" and "Bird Nesting Prevention Measures".

1.2.1 Flotation Channel Excavation

a. General . Flotation channel excavation may be required to access the disposal area(s). If a flotation channel is required, the location of the flotation channel(s) must be approved by the Contracting Officer's Representative in conjunction with personnel from the Louisiana Department of Wildlife and Fisheries.

b. Measurement . If flotation channel excavation is required to access the disposal area(s), the Contractor will be paid per each linear foot that is excavated. The flotation channel shall be excavated to the minimum dimensions necessary to place the discharge pipeline and access the disposal area(s). The bottom width of the flotation channel shall not exceed 70 feet and the bottom elevation shall not exceed -8.0 feet NAVD88. The excavated material shall be placed adjacent to the flotation channel unless otherwise directed by the Contracting Officer and shall not exceed +5.0 feet NAVD88. If this material returns to the flotation channel or the Atchafalaya River, it shall be the responsibility of the Contractor to remove at his/her expense. It is the Contractor's responsibility to assess site conditions to determine the work effort necessary for construction.

c. Payment . All costs associated with excavating and maintaining the flotation channel(s) shall be included in the contract unit price per linear foot in the "Flotation Channel Excavation" item on the bidding schedule. Payment will not be made if in the opinion of the Contracting Officer's Representative, excavation of the flotation channel is not required for use of the disposal area(s).

SECTION 35 20 23.23 24 Page 2

1.2.2 Bird Nesting Prevention Measures

All costs associated with bird nesting prevention measures shall be included in the contract unit price per day in the "Bird Nesting Prevention Measures" item on the bidding schedule. Pay time for this item will be measured by the day. A day of performing the bird nesting prevention measures is defined as beginning at 0000 hours and ending at 2400 hours. Nest prevention measures shall be performed as described in the paragraph entitled "Bird Nesting Prevention Measures". Portions of a day when the nest prevention measures are required will be considered as a full day. Price and payment shall constitute full compensation for furnishing all equipment, labor, materials, supplies, supervision, removal of nest prevention measures, and all operations incidental thereto.

1.2.3 Non-Standard Dredging Conditions

(a) Those conditions described in Section 35 20 23.23, paragraph entitled "Dredging in Non-Standard Reaches and Conditions".

(b) Where the dredging template yields less than a 200-foot swing width.

1.3 EXISTING PIPELINES, STRUCTURES OR UTILITIES

The structures or utilities listed below are known to be located within this dredging region.

Utility Owner, Address and Telephone Number Approximate C/L Station

Elevation (feet)

20-inch gas pipeline

Gulf South Pipeline 351 Technology Ln Gray, LA 70359

Quinn Bush Office: (985) 872-5043 Cell: (225) 209-8095 quinn.bush@bwpipelines.com

Atchafalaya Bar, cut and removed at channel crossing near C/L Station 868+00

NA

30-inch gas pipeline

Sea Robin/Trunkline Gas Co.

4094 Hwy 56 Houma, LA 70363

Derek Vallee Office: (985) 992-4014 Cell: (985) 322-0103 derek.vallee@energytransfer.com

Evan Kelly Cell: 985-870-5196 evan.kelly@energytransfer.com

Atchafalaya Bay C/L Station 1377+51

-40.0 MLG

36-inch gas pipeline

Sea Robin/Trunkline Gas Co.

(see above)

Atchafalaya Bay C/L Station 1376+43

-38.0 MLG

SECTION 35 20 23.23 24 Page 3

Utility Owner, Address and Telephone Number Approximate C/L Station

Elevation (feet)

Pipeline (abandoned)

WWF Oil Corporation Atchafalaya Bay West Side Disposal Area

Unknown

Two 24-inch pipelines

TENNESSEE GAS

PIPELINE COMPANY

15449 Parish Line Road Kinder, LA 70648

Zack Hillis Office: (337) 234-1309 Cell: (337) 412-3600 zachary_hillis@kindermorgan.com

Atchafalaya Crewboat Cut C/L Stations 1051+14 and 1051+62

-60.7 MLG

30 inch pipeline;

24-inch pipeline

TC Energy 18428 West Creek Drive Tinley Park, IL 60477

Benjamin Acheampong

(708) 476-4600

(708) 342-4717 benjamin_acheampong@tcenergy.com

Eric Theriot

(985) 992-9213 eric_theriot@tcenergy.com

Atchafalaya Crewboat Cut C/L Station 1066+15

-50.7 MLG

Two 6-inch pipelines (abandoned in place)

CHEVRON PIPELINE COMPANY

100 Northpark Blvd. N1128A Covington, LA 70433-5069

Matthew Posner Office: (985) 773-6045 Cell: (985) 634-0480 matthew.posner@chevron.com

Atchafalaya Crewboat Cut C/L Station 1077+58

-60.0 MLG

The Contractor should be aware that an existing longitudinal rock structure exists approximately 600 feet east of the Atchafalaya Bar Channel centerline between approximate centerline stations 580+00 and 685+00.

1.4 AERIAL PHOTOGRAPHY DOCUMENTATION

The Contractor shall provide aerial photography documentation of the work site and construction activities during the contract duration. Use of uncrewed/unmanned aircraft systems (drones) is prohibited. At a minimum, the proposed disposal areas shall be flown two (2) times; namely: prior to initiation of dredging and upon completion of disposal activities. During the flights, the significant features of work (dredge plant, proposed disposal areas, discharge site, working equipment, etc.) shall be captured. In general, sufficient images shall be taken to thoroughly

SECTION 35 20 23.23 24 Page 4 cover the project. All images must be sharp, clear, relevant and available in full JPEG format. The Contractor shall document/monitor all construction activities, before and after construction using aerial photography at oblique angles. The deliverables shall be still photos that cover the extent of the contract operations. All photographs provided shall be labeled with the following: contract number, date of photography, and photographic company name. Photographer shall have a minimum of 3 years' experience. The Government is granted unlimited use of all images without further costs. The Contractor shall electronically submit a PDF format review package to the respective area office personnel and to Mr. Jeff Corbino at Jeffrey.M.Corbino@usace.army.mil. Once the Contractor receives approval from the respective area office personnel, the Contractor shall submit the JPEG images into RMS. This submittal and review process shall be done immediately after the initial images are taken prior to dredging and immediately after the final images are taken upon completion of disposal activities.

PART 2 PRODUCTS

Although listed under PART 2 PRODUCTS, the equipment described herein remains the property of the Contractor at all times.

2.1 Skiff

The Contractor shall furnish one skiff with an enclosed cabin, overall hull length of at least 22 feet and a combined weight capacity of at least 1200 pounds. The skiff shall bear a plate of certification for minimum boat flotation by the Boating Industry Association (BIA) and shall also meet the safety requirements in EM 385-1-1. The skiff shall be used to transport Government personnel to disposal areas and all points on the jobsite and be able to perform surveys in the disposal areas. The skiff shall be outfitted with two outboard motors of at least 40 horsepower (HP) for propulsion (with one 40 horsepower backup outboard motor available).

The minimum full time crew for the survey skiff shall be one operator for the day shift. Refer to EM 385-1-1 for additional crew and equipment requirements.

2.2 Crew Boats

The Contractor shall furnish two diesel or gasoline powered crew boats, with twin propellers, capable of maintaining and traveling no less than the minimum speed of 25 miles per hour / 22 knots, not less than 40 feet in overall length, with enclosed space for at least six passengers after installation of all required equipment. The crew boats shall meet or exceed all applicable US Coast Guard regulations for vessels 65 feet or less in length, and shall be certified by the US Coast Guard. The crew boats shall be equipped with the following:

(1) air conditioning and heating;

(2) VHF-FM marine radio transceiver for ship to ship communications, as described in Section 35 20 23.23, paragraph entitled "Communications Equipment";

(3) Navigation radar, as described in Section 35 20 23.23, paragraph entitled "Navigation Radar";

(4) Safety equipment meeting the inspection requirements of the US Coast Guard Auxiliary and EM 385-1-1; and

SECTION 35 20 23.23 24 Page 5

(5) Global Positioning Equipment (GPS), as described in the paragraph entitled "Global Positioning System (GPS) Equipment".

Equipment, which fails to perform because of insufficient power or other mechanical deficiencies, or due to inexperienced operators, shall be replaced, or the operator replaced, as the case may be, within 12 hours after the Contractor is directed to do so by the Contracting Officer's Representative. One crew boat will be used solely for providing the Government Inspectors and Government agents transportation, and not for conducting surveys, providing transportation for the Contractor's personnel, or transporting the Contractor's supplies. The minimum full time crew for each crew boat shall be one operator. The crew boats shall be operated and available 24 hours a day. Refer to EM 385-1-1 for additional crew and equipment requirements. Smoking shall not be allowed inside the cabin and operator's space while occupied by Government personnel. NO SMOKING signs shall be posted.

PART 3 EXECUTION

3.1 DREDGING

3.1.1 Atchafalaya River Bar Channel

a. The authorized dimensions for the Atchafalaya Bar Channel are -20 feet Mean Low Gulf (MLG) by 400 feet bottom width. The Administrative Contracting Officer may issue dredging assignments for all or portions of this dredging region. Each dredging assignment will define the dredging template to be dredged by the Contractor. The dredging template will include the swing width, the side slope, and the specified elevation. The specified elevation in the dredging assignment will not exceed 3 feet below the authorized elevation and may be specified above the authorized dimensions when determined to be beneficial to the Government. Disposal of dredged material shall be at the Government's direction. The approved disposal areas are shown on the plates entitled "Atchafalaya Bar, Bay, and Crewboat Cut Maintenance Dredging" located at the end of this section.

b. Material removed from the Atchafalaya Bar Channel shall be placed on Aves Island, New Bird Island West #1, New Bird Island West #2, or New Bird Island West #3 on the west side of the channel or in the Pimple Mound Disposal Area on the east side of the channel. The maximum elevation of the dredged material shall not exceed +6.0 feet NAVD88. For the pimple mound disposal area, the intent is to create separate mounds by disposing dredged material at single point discharge locations. The single point discharge locations shall be a minimum of 2,000 feet from the centerline of the channel, and the discharge line shall be placed so as to direct the discharge away from the channel. Once a 300-foot crown width at an elevation of +6.0 feet NAVD88 has been reached or once the size of the mound at low tide has reached 20 acres, the Contractor shall move to another single point discharge location. The minimum distance between the single point discharge locations shall be 1,500 feet. The goal is to stagger the pimple mounds in a diagonal pattern. Therefore, after the first pimple mound location is complete, the Contractor may be directed to another location approximately 3,500 feet from the centerline of the channel. The Contractor shall submit a disposal plan to the Contracting Officer or his/her authorized representative for the Pimple Mound Disposal Area for review and approval prior to commencement of dredging operations.

SECTION 35 20 23.23 24 Page 6

3.1.2 Atchafalaya River Bay Channel

a. The authorized dimensions for the Atchafalaya Bay Channel are -20 feet Mean Low Gulf (MLG) by 400 feet bottom width. The Administrative Contracting Officer may issue dredging assignments for all or portions of this dredging region. Each dredging assignment will define the dredging template to be dredged by the Contractor. The dredging template will include the swing width, the side slope, and the specified elevation. The specified elevation in the dredging assignment will not exceed 3 feet below the authorized elevation and may be specified above the authorized dimensions when determined to be beneficial to the Government. Disposal of dredged material shall be at the Government's direction.

b. Material removed from the Atchafalaya Bay Channel shall be placed on Big Island, Roger Brown Island, or in the Pimple Mound Disposal Area, as shown on the plates entitled "Atchafalaya Bar, Bay, and Crewboat Cut Maintenance Dredging" located at the end of this section. The Contractor shall submit a disposal plan to the Contracting Officer or his/her authorized representative for Big Island, Roger Brown Island, and the Pimple Mound Disposal Area for review and approval prior to commencement of dredging operations.

Big Island and Roger Brown Island : The maximum elevation of the dredged material shall not exceed +5.0 feet NAVD88. The Contractor shall monitor placement to ensure that materials are not entering the mouth of any existing outlets or canals that intersect with the navigation channel.

Disposal must also be controlled to avoid shoaling of adjacent water courses near the disposal polygons. Pre and post disposal surveys of adjacent water courses may be required to demonstrate that disposal related shoaling has not occurred. In addition, disposal on Big Island must be controlled to avoid the creation of ponded areas or trapped water between the discharge site and the existing island. Drainage from the existing island shall also be maintained.

Pimple Mound Disposal Area : The intent of the Pimple Mound Disposal Area is to create separate mounds by disposing dredged material at single point discharge locations. The single point discharge locations shall be a minimum of 2,000 feet from the centerline of the channel, and the discharge line shall be placed so as to direct the discharge away from the channel. The maximum elevation of the dredged material shall not exceed +6.0 feet NAVD88. Once a 300-foot crown width at an elevation of +6.0 feet NAVD88 has been reached or once the size of the mound at low tide has reached 20 acres, the Contractor shall move to another single point discharge location. The minimum distance between the single point discharge locations shall be 1,500 feet. The goal is to stagger the pimple mounds in a diagonal pattern. Therefore, after the first pimple mound location is complete, the Contractor may be directed to another location approximately 3,500 feet from the centerline of the channel.

3.1.3 Atchafalaya River Crewboat Cut

a. The authorized dimensions for the Atchafalaya Crewboat Cut are -20 feet Mean Low Gulf (MLG) by 400 feet bottom width. The Administrative Contracting Officer may issue dredging assignments for all or portions of this dredging region. Each dredging assignment will define the dredging template to be dredged by the Contractor. The dredging template will include the swing width, the side slope, and the specified elevation. The specified elevation in the dredging assignment will not exceed 3 feet below the authorized elevation and may be specified above the authorized

SECTION 35 20 23.23 24 Page 7 dimensions when determined to be beneficial to the Government. Disposal of dredged material shall be at the Government's direction.

b. Material removed from the Atchafalaya Crewboat Cut shall be placed at one of the Single Point Discharge (SPD) locations that are located upstream of Disposal Area "I", as shown on the plates entitled "Atchafalaya Bar, Bay, and Crewboat Cut Maintenance Dredging" located at the end of this section. The SPD locations are positioned in open water and may be field adjusted by the Government. The Contractor shall use baffle plates, or other means, to dispose the material as close as possible to the SPD location. If surveys or visual inspection indicate that material is flowing near the channel, the Contractor shall reposition his discharge point away from the channel to minimize potential impacts.

The maximum elevation of dredged material shall not exceed +5.0 feet NAVD88. The SPD location shall be field adjusted to allow a platform with the maximum elevation to be created at each established SPD location or to avoid migration of effluent into the channel. The move from one SPD to another SPD location will be directed by the Government.

3.1.4 Conditions for Dredging and Use of Disposal Areas Within the Atchafalaya Delta Wildlife Management Area

The Atchafalaya Delta Wildlife Management Area (ADWMA) extends from approximate river mile 141 to 150 and is managed by the Louisiana Department of Wildlife and Fisheries (LDWF).