AMEND_0001.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE PAGE OF PAGES

1 46

2. AMENDMENT/MODIFICATION NO.

3. EFFECTIVE DATE

15-May-2020

4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO.(If applicable)

OM-19-033

6. ISSUED BY CODE W912P8 7. ADMINISTERED BY (If other than item 6) CODE

USACE, CONTRACTING DIVISION

ATTN: CEMVN-CT, ROOM 172

7400 LEAKE AVE.

NEW ORLEANS LA 70118-3651

See Item 6

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

9A. AMENDMENT OF SOLICITATION NO.

W912P819B0035

X 9B. DATED (SEE ITEM 11)

02-Apr-2019

10A. MOD. OF CONTRACT /ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. T HIS ITEM ONLY APPLIES TO AMENDMENT S OF SOLICIT ATIONS

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 ofthe 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 telegramor letter, provided each telegramor letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNT ING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACT S/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. T HE ABOVE NUMBERED CONTRACT /ORDER IS MODIFIED TO REFLECT THE ADMINIST RATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORT H IN ITEM 14, PURSUANT TO THE AUT HORIT Y OF FAR 43.103(B).

C. T HIS SUPPLEMENT AL AGREEMENT IS ENTERED INTO PURSUANT TO AUT HORIT Y OF:

D. OTHER (Specify type of modification and authority)

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

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

The above numbered solicitation for Mississippi River, New Orleans Harbor and Various Bar Channels Cutterhead Dredge Rental Nos.

4-2019 Orleans, Jefferson, Terrebone, Plaquemines and Lafourche Parishes, LA (OM-19-033) has been amended to:

1. Set the bid opening date for 21 May 2020 at 11:30 AM CST via audio teleconference. See "Instructions to Bidders".

2. Inform bidders that all bids must submitted electronically to DoD Safe no later than 11:00 AM CST, 21 MAY, 2020. See "Instructions to Bidders".

3. Update Davis Bacon Wage Rate Determination

4. Make changes to the soliciation as detailed in the follow ing pages

Please note: the Contracting Officer and Contract Specialist w ill begin dow nloading bids at 11:00 AM CST, w hich is the bid receipt cutoff time. All bids received after 11:00 AM CST on Thursday, May 21, 2020 w ill be considered late. For any questions, please contact the

Contracting Officer- Ione Cataldo, (504) 862-2882 or the Contract Specialist - Bianca Gaddison (504) 862-2163.

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 CONT RACTING OFFICER (Type or print)

TEL: EMAIL:

15B. CONT RACT OR/OFFEROR

(Signature of person authorized to sign)

15C. DATE SIGNED 16B. UNIT ED STATES OF AMERICA

BY

(Signature of Contracting Officer)

16C. DATE SIGNED

EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

30-105-04 STANDARD FORM 30 (Rev. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.24

INSTRUCTION TO BIDDERS

Due to the response for COVID-19, most federal employees have been mandated to telework, and currently only authorized personnel are allowed access to the District buildings throughout USACE. As a result, we have implemented the below procedures for all current and future bid openings, until such restrictions have been lifted and normal access has resumed at the MVN HQ Building.

Electronic Submission of Bids:

MVN will utilize the DoD Safe website for receipt of electronic bids under IFB Solicitations. In order to submit an electronic bid please follow these steps:

1. Send an email containing your name and email address to the following Contracting Officer and Contract Specialist associated with the IFB:

Contracting Officer – Mrs. Ione Cataldo, email: ione.m.cataldo@usace.army.mil Contract Specialist – Mrs. Bianca Gaddison, email: bianca.m.jamesgaddison@usace.army.mil

2. The Contracting Officer or Contract Specialist will go to the DoD Safe site, input your name and email address, and then will request the file from you. You will then receive an automated email from the site with a unique link in the email.

3. Once the email with the link is received, please click on the link in the email, which will take you to the DoD Safe site.

4. This will be a unique webpage where you can upload your file. The default page will load with the box checked off next to, “Send me an email when each recipient picks up the files”.

Please leave this box checked in order to receive a notification when the file is received from the Contracting Officer or Contract Specialist. Please leave unchecked, “Encrypt every file”. The site itself contains a high level of security in which additional encryption is not required.

5. When you are ready to upload your bid file (please use pdf format for bid submission), you can either click the blue button which says, “Click to Add Files or Drag Them Here” to locate the file on your computer, or simply drag the file onto the screen.

6. In the Description box that appears after uploading your file, please type your Company Name.

7. Click the button that appears at the bottom of the page, “Drop-off Files”. A banner will popup asking for confirmation that your upload does not contain Classified Information. Click ok on the banner.

8. You will be taken to a confirmation page that should say, “Drop-Off Completed” at the top.

This is your confirmation that your file was successfully uploaded to the site.

9. The Contracting Officer or Contract Specialist will receive an automated email stating that the file has been submitted. They will then send an email back to the company, confirming that they received the notice from the DoD Safe site.

The Bid Opening is currently scheduled for Thursday, 21 May 2020 at 11:30 AM CST. The Contracting Officer and Contract Specialist will begin downloading bids at 11:00 AM CST, mailto:bianca.m.jamesgaddison@usace.army.mil which is the bid receipt cutoff time. All bids received after 11:00 AM CST on Thursday, 21 May 2020 will be considered late.

Audio Teleconference Bid Opening Information:

Bid Opening will be held on Thursday, 21 May 2020 at 11:30 AM CST. Please use the following call-in information to attend the meeting:

Toll-Free: 877-692-8954 Caller Paid: 234-720-6987 Access Code: 2341860#

Following the conclusion of the bid opening, the Bid Abstract will be uploaded to Beta.SAM website under this solicitation, within 24 hours.

Bid Bonds (Offer Guarantee) should be submitted electronically with the Bid Package as per the scheduled Bid Opening on Amendment.

For any Questions please contact:

Contracting Officer – Mrs. Ione Cataldo, email: ione.m.cataldo@usace.army.mil ;

Phone: 504-862-2882

Contract Specialist – Mrs. Bianca Gaddison, email: bianca.m.jamesgaddison@usace.army.mil ;

Phone: 504-862-2163

Mississippi River, New Orleans Harbor and Various Bar Channels Cutterhead Dredge Rental No. 4-2019, Orleans, Jefferson, Terrebonne, Plaquemines and Lafourche Parishes, LA (OM-19-033).

Solicitation No. W912P819B0035.

1. Note: The dredge must be able to operate in river stages above 12 feet at the New Orleans

(Carrollton) gage. Therefore, the Contractor shall certify that its dredge meets this requirement.

2. Cover Sheet, Description and Magnitude of Work: Delete the second sentence of this paragraph and replace with the following: “Work will be performed in the New Orleans Harbor Reach of the

Mississippi River, adjacent lock forebays of the Gulf Intracoastal Waterway, and Baptiste Collette.”

3. Standard Form 1442, box 10, 3rd paragraph: Delete the second sentence of this paragraph and replace with the following: “Work will be performed in the New Orleans Harbor Reach of the Mississippi

River, adjacent lock forebays of the Gulf Intracoastal Waterway, and Baptiste Collette.”

4. Standard Form 1442, box 11: Delete “within 5 calendar days” and replace with “no later than 8 June

2020”.

5. General comment: For sections where “Part 2 Products” is used, revise the paragraph to state the following: “Although listed under “PRODUCTS”, the equipment described herein remains the property of the Contractor at all times.”

6. Section 00010 “Bid Schedule”: Delete this section in its entirety and replace with the attached Section

00010 “Bid Schedule”.

7. Section 00700, FAR Clause 52.211-10 “Commencement, Prosecution, and Completion of Work (Apr

1984)”: In the first sentence, delete “within one hundred and twenty hours after the date the

Contractor receives the notice to proceed” and replace with “no later than 8 June 2020”. Also delete

“after the date of receipt by Contractor of notice to proceed” and replace with “after 8 June 2020”.

8. Section 00800, paragraph 3.1 “Delivery of Plant”, subparagraph a: In the first sentence, delete “120 hours after receipt by the Contractor of the Notice to Proceed” and replace with “8 June 2020”.

9. Section 01 45 00.15 10, paragraph 1.3 “RMS Software”: In the third sentence, delete

“http://rmsdocumentation.com” and replace with “http://rms.usace.army.mil/qcs/index”.

10. Section 01 57 20.00 10, paragraph 3.3.1 “Manatee Considerations”, subparagraph b: In the last sentence, delete Mr. Edward Creef as the point of contact and replace with the following point of contact: Mr. Jeff Corbino, phone (504) 862-1958, email: Jeffrey.M.Corbino@usace.army.mil.

11. Section 35 20 23.23, paragraph 1.2.2 “Dredging and Option Dredging Items”: Delete the first sentence and replace with the following sentence: “Payment for a fully operated cutterhead dredge will be made at the contract unit price per hour for "NOH Dredging", "NOH Option Dredging", “Baptiste Collette Dredging”, and “Baptiste Collette Option Dredging”, at the pay times stipulated in the following subparagraphs.”

http://rmsdocumentation.com/ http://rms.usace.army.mil/qcs/index mailto:Jeffrey.M.Corbino@usace.army.mil

12. Section 35 20 23.23, paragraph 1.2.5 “Work for Others”: Add the below subparagraph d to the end of the paragraph:

d. If the dredge returns to an assignment in another dredging region and the dredge in tow never enters the route that would have been taken had the dredge not been released, when dredged material starts flowing through the discharge pipeline.

13. Section 35 20 23.23, paragraph 3.1.4 “Order of Work”, subparagraph a: Delete subparagraph a in its entirety and replace with the following:

a. Dredging will be performed in the following order:

(1) New Orleans Harbor Dredging Region

(2) Algiers, IHNC, and Harvey Lock Forebays Dredging Region

(3) Baptiste Collette Bar Channel Dredging Region

14. Section 35 20 23.23, paragraph 3.4 “Cutterhead Dredge and Attendant Plant Data Sheet”: In Item 1 (l)

“Length of digging spud to trunnion”, change to the following:

(l) Length of digging spud to trunnion:

With an idler barge: , Without an idler barge:

15. Section 35 20 23.23 07, paragraph 3.1.1.1 “New Orleans Harbor Dredging Region”, subparagraph a:

In the first sentence, delete “-35 foot Mean Low Gulf (MLG)” and replace with “-35 foot Low Water

Reference Plane (LWRP)”. In the chart, delete “Authorized Elevation (FT) MLG” and replace with

“Authorized Elevation (FT) LWRP”.

16. Section 35 20 23.23 07, paragraph 3.1.1.1 “New Orleans Harbor Dredging Region”, subparagraph c:

In the last sentence, delete “-55 foot MLG contour” and replace with “-55 foot LWRP contour”.

17. Section 35 20 23.23 07, paragraph 3.1.3 “Before and After Dredging Cross Sections”: Delete “-55 foot MLG contour” and replace with “-55 foot LWRP contour”.

18. Section 35 20 23.23 07 Plates: Delete Plates 1 & 2 of the New Orleans Harbor Dredging Region and replace with the attached Plates 1 & 2 of the New Orleans Harbor Dredging Region.

19. Section 35 20 23.23 08 Plates: Delete Plates 2, 3, & 4 of the Algiers, IHNC, and Harvey Lock

Forebays Dredging Region and replace with the attached Plates 2, 3, & 4 of the Algiers, IHNC, and

Harvey Lock Forebays Dredging Region.

20. Section 35 20 23.23 15 “Hydraulic Dredging – Bayou Lafourche Dredging Region”: Delete this section in its entirety.

21. Section 35 20 23.23 16 “Hydraulic Dredging – Baptiste Collette Bar Channel Dredging Region”:

Delete this section in its entirety and replace with the attached Section 35 20 23.23 16 “Hydraulic Dredging – Baptiste Collette Bar Channel Dredging Region”.

22. Section 35 20 23.23 18 “Hydraulic Dredging – Houma Navigation Canal Dredging Region”: Delete this section in its entirety.

23. Section 35 20 23.23 19 “Hydraulic Dredging – Barataria Bay Waterway Bar Channel Dredging

Region”: Delete this section in its entirety.

Miss R, New Orleans Harbor and Various Bar Channels Cutterhead OM19033AMEND

SECTION 00010 Page 2

24. Section 35 20 23.33 “National Dredging Quality Management Program Pipeline Hydraulic Dredge”:

Add the attached Section 35 20 23.33 “National Dredging Quality Management Program Pipeline Hydraulic Dredge” to the end of the solicitation.

SECTION 00010 Page 3

SECTION 00010

BID SCHEDULE

PART 1 GENERAL

1.1 BIDDING SCHEDULES

SECTION 00010 - BIDDING SCHEDULE

MISSISSIPPI RIVER, NEW ORLEANS HARBOR AND VARIOUS BAR CHANNELS

CUTTERHEAD DREDGE RENTAL NO. 4-2019

ORLEANS, JEFFERSON, TERREBONNE, PLAQUEMINES, AND LAFOURCHE PARISHES, LA

SOLICITATION NO. W912P819B0035

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

Bid Item DESCRIPTION Estimated Quantity

Unit Unit Price Total Price

0001 MOBILIZATION AND DEMOBILIZATION 1 Job

NOH DREDGING:

Rental of one fully operated cutterhead dredge with 27-inch ID pump discharge, attendant plant, and discharge pipeline as specified.

Hour

Option

NOH OPTION DREDGING:

Same plant as listed in Item No. 0002 of this bid lot.

xxxxxxxxx

0004 DREDGE TOWING SERVICE 100 Mile

OPTION DREDGE TOWING SERVICE:

Same towing service as listed in Item No.

0004 of this bid lot.

Mile

PREPARATORY WORK FOR

BAPTISTE COLLETTE DREDGING

REGION

Job

BAPTISTE COLLETTE DREDGING:

Rental of one fully operated cutterhead dredge with 27-inch ID pump discharge, attendant plant, and discharge pipeline as specified.

BAPTISTE COLLETTE OPTION

DREDGING:

Same plant as listed in Item No.

0007 of this bid lot.

BIRD NESTING PREVENTION AND

AVOIDANCE MEASURES

Day

TOTAL: LOT ONE BID

* SEE BID FORM NOTES FOLLOWING LAST BID LOT

SECTION 00010 Page 4

LOT TWO, 30 IN. INSIDE DIAMETER (ID) PUMP DISCHARGE WITHOUT SUBMERGED PUMP

Bid Item

DESCRIPTION

Estimated Quantity

Unit

Unit Price

Total Price

Rental of one fully operated cutterhead dredge with 30-inch ID pump discharge, attendant plant, and discharge pipeline as specified.

NOH OPTION DREDGING:

OPTION DREDGE TOWING SERVICE:

Rental of one fully operated cutterhead dredge with 30-inch ID pump discharge, attendant plant, and discharge pipeline as specified.

BAPTISTE COLLETTE OPTION

DREDGING:

TOTAL: LOT TWO BID

SECTION 00010 Page 5

LOT THREE, 30 IN. INSIDE DIAMETER (ID) PUMP DISCHARGE WITH SUBMERGED PUMP

Bid Item

Estimated Quantity

Unit

Unit Price

Total Price

Rental of one fully operated cutterhead dredge with 30-inch ID pump discharge, submerged pump, attendant plant, and discharge pipeline as specified.

NOH OPTION DREDGING:

OPTION DREDGE TOWING SERVICE:

Rental of one fully operated cutterhead dredge with 30-inch ID pump discharge, submerged pump, attendant plant, and discharge pipeline as specified.

BAPTISTE COLLETTE OPTION

DREDGING:

TOTAL: LOT THREE BID

SECTION 00010 Page 5

1.2 BID FORM NOTES

a. Bidders shall bid on all items including optional items (see "Evaluation of Options" FAR

52.217-5). Failure to bid on all items will result in a non-responsive bid.

b. Bidders shall use the Item No. 0002 unit price to compute Option Item No. 0003 total price, Item No. 0004 unit price to compute Option Item No. 0005 total price, and Item No. 0007 unit price to compute Option Item No. 0008 total price.

c. Any bid may be rejected if the Contracting Officer or his/her authorized representative determines in writing that it is unreasonable as to price. Unreasonableness of price includes not only the total price of the bid, but the prices for individual line items as well.

Any bid may be rejected if the prices for any line items or subline items are materially unbalanced (see "Rejection of Individual Bids" FAR

14.404-2.

d. THE NOTICE TO PROCEED (NTP): The successful bidder is advised that performance and payment bonds shall be submitted in accordance with the time frame in block 12B of SF 1442 after Notice of Award. The NTP will be issued after verification of acceptable performance and payment bonds.

Within 48 hours after issuance of the NTP, the Contractor shall initiate a meeting to discuss the submittal process with the Administrative Contracting Officer or his/her authorized representative.

Physical work cannot start until the Resident Management System is set-up, the Accident Prevention Program and other required submittals have been submitted and approved, and all preliminary meetings called for under the contract have been conducted.

e. RAPID VENDOR PAYMENT: See the following web based instructions for the submission of invoices:

www.mvn.usace.army.mil/Business-With-Us/Contracting/Rapid-Vendor-Payment.aspx

f. The unit "job" is a one-time payment for work performed.

"Job" is synonymous with the previously used term "lump sum".

1.3 BIDDING

a. The bidder shall select only one bid lot, determined by the class of dredge intended to be used.

Bids which are submitted on an inappropriate bid lot will be declared non-responsive.

b. Bidders shall furnish unit prices for all items listed on the schedule of bid items that require unit prices. If the bidder fails to insert a unit price in the appropriate blank for required items but does furnish an extended total or an estimated amount for such items, the Government will deem the unit price to be the quotient obtained by dividing the extended estimated amount for that line item by the quantity.

IF THE BIDDER OMITS BOTH THE UNIT PRICE AND THE EXTENDED ESTIMATED

AMOUNT FOR ANY REQUIRED ITEM, THE BID WILL BE DECLARED

NON-RESPONSIVE.

1.4 EVALUATION OF BIDS

a. To provide fair competition between dredges of dissimilar sizes and production rates, the hourly dredging quantities have been determined based on the estimated quantity of shoal material to be removed and the http://www.mvn.usace.army.mil/Business-With-Us/Contracting/Rapid-Vendor-Payment.aspx

SECTION 00010 Page 6 nominal production rate(s) of the dredge in each bid lot. The production rates shown in the chart(s) in the paragraph entitled

"Minimum Production Rate Requirements" located in the Dredging Region

Section(s) were used to make this determination.

b. The nominal dredge production rates listed in this solicitation were conservatively estimated based on lower-bound material face availability of this solicitation's dredging regions, which have variable and dynamic shoaling conditions. It is the bidder's responsibility to make its own assessment of the actual dredging conditions in order to prepare a bid for this work.

c. Award will be made to that responsible bidder presenting the lowest priced responsive bid in response to this solicitation, regardless of the Bid Lot used.

d. The hourly quantities for the Dredging and Option Dredging Items shown on the bid lots are 100% pay time hours. The actual term of the dredge rental may vary as a result of fractional pay time. Refer to Section 35 20 23.23, paragraph entitled "Dredging and Option Dredging Items", for additional information.

1.5 CONDITIONS OF CONTRACT AWARD

a. Award will be made as a whole to one bidder. The dredge and attendant plant offered in the bidding schedule shall be complete with full operating personnel and in operating status for the contract period. EM 385-1-1, Section 19, "Floating Plant and Marine Activities" shall be complied with at all times. NOTE: All work under these specifications shall be performed in accordance with the provisions of EM 385-1-1 "Army Corps of Engineers Safety and Health Requirements Manual", latest edition.

b. The Government may award the contract at the total bid price, comprised of the base items and option item(s); however, the Government is not obligated to exercise any option item(s).

c. The number of hours of rental time stated in the bidding schedule is an estimated quantity. The dredge and attendant plant will be retained for an approximate number of days shown in the table below starting no later than 8 June 2020.

SECTION 00010 Page 7

APPROXIMATE

DREDGE CONTRACT

DURATION (BASE

PLUS OPTION)

Bid Lot Discharge

Line ID

(INCHES)

SUBMERGED PUMP Approximate Number of

Rental Days

1 27 No 127

2 30 No 108

3 30 Yes 89

d. The bidder shall be capable of providing for assignment of the dredge and all attendant plant, complete and in full operating condition in all respects, with commencement of dredging beginning no later than 8 June 2020.

1.6 BIDDER QUALIFICATIONS

a. Before the Government will award a contract based on this solicitation, the apparent low bidder shall establish that it is responsible and entitled to award of the contract, by certifying that its dredge meets the appropriate production rate for the dredging region, as listed in the chart(s) in the paragraph entitled "Minimum Production Rate Requirements" located in the Dredging Region Section(s). The dredge must have performed at, or above, the listed production rate for at least 85 percent of the total contract duration, on any contracts that are used to prove plant capability, within three years prior to the bid opening date of this solicitation. Failure to establish the dredge's capability to meet the required production rate will result in a finding of non-responsibility.

b. A bidder may be rejected as non-responsible if it cannot show the necessary capital, experience, or equipment needed to perform the work described under this solicitation (see "Responsible Prospective Contractors" FAR 9.1). The bidder must also show that the dredge and attendant plant are not already obligated for the performance of other work which would delay commencement, performance, and completion of the solicited work, and must show that delivery of the dredge and attendant plant to the site of work can be made within the time allowed in the specifications.

c. Bidders must register in the System for Award Management (SAM) database in accordance with FAR 52.204-7.

1.7 PRE-AWARD INSPECTION OF PLANT

a. The apparent low bidder shall make the dredge and attendant plant available for inspection, to determine compliance with these specifications, as soon as practicable after bids are opened, and prior to contract award. If deficiencies are found during the inspection, the bidder will be notified in writing, which may be transmitted by email or facsimile. Upon receipt of such notice, the bidder shall correct all deficiencies at least two calendar days in advance of the projected contract award date.

SECTION 00010 Page 8

b. Two calendar days before the projected award date, or upon notification by the bidder that the deficiencies have been corrected, a Government representative will re-inspect the dredge and attendant plant. If at that time the dredge and attendant plant do not meet the requirements of these specifications, the bidder will be rejected as non-responsible.

c. The Government may choose to waive the pre-award inspection if the projected contract award date is less than five calendar days after the bid opening date. Waiver of the pre-award inspection does not relieve the bidder from the requirement to provide a dredge and attendant plant in full compliance with the specifications.

1.8 OPTION ITEMS

a. The Government may require the delivery of, in whole or part, any Option Items. The Government may exercise an Option Item by written notice to the Contractor. If the Government activates the Option Item, the activation will occur while the Contractor's equipment is in the work vicinity as described in the applicable Dredging Region Section(s). If Option Dredging Item work is exercised, it shall be performed as a continuance of Dredging Item work, which shall be activated first.

b. No additional mobilization/demobilization will be paid to the Contractor for Option Item work performed within the work region. The Contractor shall commence performance of optional work no more than three calendar days after the time the Contractor receives the Government's Notice to Proceed with the optional work.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used)

-- End of Section --

\t -

- -0 1000 i i\ -

•98

NOTES:

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1. DREDGI NG ASSIGN MENTS DETAILING THE ACTUAL

DREDGING TEMPLATE WILL BE ISSUED BY THE

CONTRACTING OFFICER.

2. FOR HYDROGRAPH DAT A, REFER TO

WWW .RIV ERG AGES.CO M, NEW ORLE A NS DISTRICT,

MISSISSIPPI RIVER AN D PASSES, MISS. RIVER © HARVEY

LOC K IDCP" 01320). THIS GAGE WILL BE USED FOR

VER TICAL CONTRO L BETWEEN STATIONS 0 +00 AND

150+00. SEE TAB LE BELOW FOR THE ADJUSTMENT THAT

SHOULD BE ADDED TO THE GAGE READINGS TO CON VERT

THEM TO THE LOW WATER REFERENCE PLA NE 2007

ILWRP 2007)I N AV D881.

GAGE

DESCR IPTION

VERTICAL

DATUM

ADJUSTMENT

TO LWR P 2007

MISS . RIVER ©

HARV EY LOCK

DCP" 01320

DATU M

- 1.43' n0+00

. 99 10s+0l

,...-= 100+00

ENTERGY

11- 2-SUS CABL E:S

AT&T

\ " - 90+00

\ " s0+00 -----

70+00

3. DISPOSAL AREAS BEYON D -55 FT. LWRP CONTOUR.

4. WHEN TAKING SURVEYS IN FE B 2018 , TWO UNKNOWN

OBJECTS WERE LOCATED. UNKN OWN OBJECT "1 IS A

CYLINDR ICAL OBJEC T APPROX . 20' X 2',AND UNKNOWN

OBJECT "2 HAS AN UNDETERM I NED SHAPE. WHEN TAKI NG

SURVEY S I N AU G 2019 , AN OBJECT TH AT APPEARS TO BE A

SUNKEN SHIPPING CONTAINER APPROX. 55' X 8' WAS

LOCATED. SEE PL AT E FOR MORE DETAILS.

5. A N A NCHOR WAS LOS T DURING FY10 DRE DGI NG

NEAR STA. 11 +92. SEE PLATE FOR MORE DETAILS.

5.DATUM RELA TIONS HIPS AS OF NOV 2019

FOR DCP" 01320: 0.0' GAGE DATUM = -0.8 3'NAVD88

12009 .55)= -1.43'LW RP 2007.

100' OFFSE T BASELINE COORDINATES

i 1

X• 3 66505 1.300 Y· o15562. 600

I

LOST ANCHOR

50+00 (/J C)

X-Y COORDINATES - N

AD83 STATE PLANE GRID

SCALE IN FEET

i',.

,:<:j "-

10+g

NOTE, BACKGROUND PHOTO DAT ED 2017 .

NEW ORLEANS HARBOR

i f .........._,' • ..-'-6> f Atrt 1cr lZJ ,□ edgin g Reg10n

"" Nash v i ll e to H a, m on St, eet Wha,ves

FI LE NAME: NOHARBOR20 _PL ATE 1.OGN PLA TE J

15 0 ' TO 160' FROM WHARF

X 3662699.432 Y 5 16029.790

1 00 -0

X 3 66 165 4.2 56

Y 5165 79 . 33 3

X 3672 65 9. 2 4 7

Y 516225.8 28

X 3 66 2381 .101

Y 516114 . 130

X 3673055.002

Y 5163 3 4. 747

X 3 66556 7 .58 2

Y 51542 7 .13 5 9 X 367 3 49 7.5 20

Y 5164 66 . 793

X 3669294.205

Y 515 38 8.6 46 10 X 3673979. 732

Y 5166 25 .3 41

X 36 72 20 3 . 20 2

Y 51588 4.880

X 367 4 461. 93 3

Y 516 786 .33 2

X 3 6 72 166 .0 29

Y 516099 .199 12 X 367 6156 .841

Y 517356 .4 89

NOTES :

N

Trade

Mart

1. DREDGING A SS I GNM EN TS DE TAI LI NG THE A C TUAL

DREDG I NG TEMPL A TE WILL BE ISSUED BY THE

CONTRACTING OFFI CER.

2. . F OR HYDROGRAPH DATA.REFER TO

WWW . RI V ERG AG ES . COM , NEW ORLEANS DI S TRI CT ,

MI SSI SSIPPI RIVER ANO PASSES, MI SS. RIVER ©

HARVEY LOCK IDCP• 013201 AND MI SS . RIVER ©

IHNC LOCK ID CP• 013 40 1. VERTICAL CON TROL

BE T WEEN STATIONS 230+00 A ND 333+10 SHOULD

EQUAL THE AR I THM E TI C AVERAGE OF IHNC AND

HARVEY. SEE T A BL E BELOW FOR THE ADJ US TMENT

THAT SHOULD BE ADDED TO THE GAGE READINGS

TO CONVERT THEM TO THE LOW WATER REFERENCE

PLANE 2007 ILWRP 20071 INA V D8 8I .

VERTICAL

DATUM

ADJUSTMENT

TO LWRP 2007

MISS. RIVER© HARVEY LOCK

OCP • 01320

DATUM

- 1.4 3 '

MI SS . RI VER © IHNC LOCK

DCP• 013 40

- 0 . 51'

3. . DI SPOSA L AREAS BE Y OND -55 F T. L W RP CONTO UR.

4 . DA TUM REL AT IONSHI PS AS OF NOV 2 0 19 F OR :

DCP• 013 40 : 0 . 0 ' GAGE DA TUM - 0 . 11' NAVD88

12 0 0 9 . 5 51 = - 0.51' LWRP 2007

DCP• 0132 0 : 0 . 0 ' GAGE DATUM - 0. 8 3' NAVD88

12 0 0 9 . 5 51 = -1.43' LWRP 2007

10 0 ' OFF SET BASELINE COOR DINATES

JN

X-Y COORDINA T ES - NA D8 3 STATE PLANE GR I D

SCALE IN FEET

500 0 500

NO TE, BACKGROUND PHOTO DA TED 2017 .

NEW ORLEANS HARBO R

Dr-edging Reg10n

Ma r- ke t to Po dr-as

F I L E NAME , NDHARBOR20 _PL ATE2.DG N PL ATE 2

X 3683031386

Y 5 215 6 3 . 7 8 3 24 X 3683532.496

Y 529077.800

X 3 68 3 2 36.4 99

Y 521899 082

S

X 3683482.277

Y 5 290 67 .14 6

X 3 68 35 90 .63 7

Y 5 2 27 63 .665 26 X 3 68 3 4 4 3 .14 8

Y 529368 025

X 3683717.709

Y 523099.202 2 7 X 3 68 35 21. 101

Y 5 2 9 3 7 8 . 14 2

X 3 68 3819 .8 14

Y 523549.440 28 X 3 68 3 496.4 8 2

Y 5 29 567 . 62 7

X 3683942.775

Y 5 2 45 48 . 375 29 X 3 68 33 98 .389

Y 529552.639

X 3683933.272

Y 5 25 3 28 .3 5 7

Q X 3 68 333 4 . 2 49

Y 530150.004

X 368384 7 014

Y 526421.718

X 3 68 3311. 99 3

Y 5 30 68 7 . 66 1

X 3 68 3 63 5 .88 6

Y 5 2 812 2.119 32 X 3 68 33 78 .163

Y 5 3112 9. 280

X 3 68 3 54 4 .8 80

Y 528684 059 33 X 3683379.680

Y 531220 040

23 X 3683592.403

Y 528693.137 34 X 3 68 3 4 77 .920

Y 5 3 14 6 7 043

•3 g

NOTES:

I. DREDGING ASSIGNMENTS DETAILING THE ACTUAL DREDGING

TEMPLATE WILL BE ISSUED BY THE CONTRAC T ING OFF I CER.

NEW ORLEANS

TABLE OF COORDINATES

APPROX LIMITS OF WORK

POINT X y

1 3714427.467 519304.773

2 3714558.995 519154.106

3 3712826.325 517 6 4 1.5 4 0

4 3712592. 796 517604.933

5 3712369.196 517409. 7 37

6 3712320.530 517 4 65 . 4 8 3

7 P.O.B. 3714451.800 519276.900

8 P.O.E. 3712344.863 517437.610

2. FDR HYDROGRAPH DATA ANO VERTICAL CONTROL IN ALGIERS

LOCK FOREBAY, REFER TO WWW . RI VERGAGES. CDM, NEW ORLEANS

DISTRICT, MISSISSIPPI RIVER AND PASSES, MISS. RIVER il

ALGIERS LOCK IOCP• 013801. SEE TABLE BELOW FOR THE

ADJUSTMENT THAT SHOULD BE ADDED TO THE GAGE READINGS TO

CONVERT THEM TO MLG.

3. DISPOSAL AREAS BEYOND 55 FT.MLG CONTOUR.

4. . DA T UM RELATIONSHIPS AT DCP• 01380 AS OF NOV 2019:

0.0' GAGE DATUM • -0.11' NAVD88 12009.551 • 1. 42 ' MLG

-0.61' LWRP 2007

VERTICAL

DATUM

ADJUSTMENT

TO MLG

MI SS. RIVER io

ALGIERS LOCK

DCP• 01380

+ 1.42'

DISPOSAL ARE A

Beyond the -55 ft MLG contour into the Mississippi River

MISS. RIVER il

ALGIERS LOCK,

•01380

Ai.C IERS LOCK 6

GATEJ

I f

ENTERGY UNDERGROUND

POWERLINE

12" S&WB WA TER LINES

'''0'371 V u 8 5 r-cn

I

0 0 0 0

0 0 0 0 r- N

LO 0 LO

N N ,;--

163'}

LO

SECTION 6

RS NAVIGATION LOCK

Maintenance □ edg ing

File Nam e: Algiers20.dgn PLATE 2

APPROX LIMIT S OF WOR

NO TES :

1. DREDGI NG A SSI GNM NTS DETAILING THE ACTUAL DREDGI NG

TEMPLATE WI L L BE IS ED BY THE CONTRACTING OFF I CER.

2. F OR H Y OR OGRA PH DA A A ND VERTICAL CONTROL AT H ARV E Y

L OCK F OR EB AY , REFER O WWW. R! VERGAGES . COM, NEW ORL EANS

DI S TRI CT , MISSISSI Pl RIVER A ND P A SSES , MI SS. RI VER ©

H ARVEY L O CK IDCP• 01 201. SEE TA BLE BEL O W FOR THE

A DJ USTMEN T THAT SHO LO BE ADDED TO THE GAGE READINGS T O

C ONVERT THEM T O MLG

3. DI SPO SAL AREAS BE ONO 55 F T. ML G CON TOUR.

4 . DATUM RELATIONSH PS AT DCP• 01320 AS OF NOV 2019 :

0 . 'GAGE DATUM = -0. 3' NAVDBB 12 0 09 . 551 = 0 . 78 ' MLG

- 1.43' WRP 2007

:,:c'1,X1 , 1 1 f 1 ,

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - ---- - - - • 2

0 0

POINT X y

36 76 1 8 . 3 56 515965 968

2 36763 9.956 5160 15 463

36765 4.493 515212 960

4 36766 5.262 514 9 58 158

36765 4.566 514933 118

6 36762 3.700 515978 500 p r 367665 .540 514 70 . 32 2

H4RVEY LOCt Kl S i :, ----' • 3 uJ

MISS . RIVER ©

HARVEY LOCK

DCP• 01320

AL1 I N FEET

200 4 0

NOTE: BACKGROUND PHOTO DATED 2017 .

Fil

HARVEY

F oreboy Mai t en onc

N m : or vey 20 dgn

LOCK

Dredging

PLATE

GAG E

VERTICAL

DATUM

ADJUSTMENT

TO MLG

MI SS. RIVER ©

HARVEY L OCK

DCP• 01320

+ 0. 78 ' http://www/ ro

TA BLE OF COORDINATES

APPROX LIMITS OF WORK

POINT X y

NOTES:

1. DREDGING AS SIGNMENTS DETA ILING

-z THE ACTUAL DREDGING TEMPLATE WILL BE

ISSUED BY THE CONTRACTING OFF ICER.

REFER TO WWW.RIVERGAGES.COM,

NEW ORLEANS DISTR IC T, MISSISSIPP I RIVER

369 4300 .250

534566.222

AND PASSES, MISS . RI VER © IHNC LOCK

CDCP• 0 1340 ). SEE TA BLE BELOW FOR THE

ADJUSTMENT THAT SHOULD BE ADDED TO

7 3694326 .374 534662.749 THE GAGE READINGS TO CONVERT THEM TO

8 369 4 25 4 .673 53468 4 .907 MLG .

9 3693974.131 53372 4. 857

10 3693874 . 386 533356 .299

11 3 693920 .635 532981.621

12 P O. B. 3694 737.80 1 531 674 .146

13 PC 3964 113. 710 53 2790 .0 45

14 PT. 3694008.465 533631.623

15 P O E. 3694290.871 534675.111

FORSTALL

STREET

3. DISPOSAL AREAS BEYOND -55 FT MLG

CONTOUR INTO THE MISSISSIPPI RIV ER.

4. DATUM RE L ATIO NSHIPS FOR DCP•

01340 AS OF NOV 20 19

0.0' GAGE DATUM • -0 .11' NAVD88 (2009.55)

1.75 ' MLG -0 . 61' L WRP 2007

DESCR I PT I ON

V ERTI CA L

DATUM

ADJ USTMENT

TO ML G

MI SS . R I VER

@ I HN C LOCK

DCP# 01340

+ 1. 75'

XO

e'

1) e'

L L T. NO. 1

8 37.5' 0 0 57.5' f'----- N 0

0 CURVE 3

0 + n 0 U) n n N

(j)

"D C

I...

.---i ro

Q_ 3 c 93 e

I NN ER HARBOR NAVIGATION CANAL LO CK

Fo eba Maintenance □ e d gi ng

SCA LE IN FEET

200 0 i--w-- 200 400 600

File Nome : IHNC 20 .dg n PLATE 4

NOTE : BACKGROUND PHO TO DAT ED 2017.

CURVE 1 DATA

E AS T EDGE OF CUT

DEL T Ac 44° 2 1' 3 7 . 8 4 "

DEGREE OF CURVE: 5° 43' 46 . 48 "

TANGENT : 4 0 7 . 69'

LENGTH OF CURVE : 77 4 .2 4 '

RAD IUS: 1000'

CURVE 2 DATA

C/L

DEL TA : 44° 21' 3 7 .8 4 "

DEGREE OF CURVE: 5° 07' 14 . 77 "

TANGENT : 4 56 .16'

LENGTH OF CURVE: 866 .2 9'

RAD IUS: 1118 . 89 '

CURVE 3 DATA

WEST EDGE OF CUT

DEL TA: 44° 21'38.05"

DEGREE OF CURVE : 11° 27' 32 . 96"

T ANG ENT : 20 3 .8 5 '

LENGTH OF CURVE: 38 7. 12 '

RAD IUS: 500'

CURVE DATA

1 3694672.343 531637 .5 37 2. FOR HYDROGRAPH DATA AND

2 369 4803.259 53 1710 . 755 VERTICAL CONTROL IN IHNC FOREBAY ,

3 3694156.467 532867.245

4 3694063.970 533616.601

5 369 4 289 .163 53 44 48.693 http://www.rivergages.com/

SECTION 35 20 23.23 16 Page 1

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23.23 16

HYDRAULIC DREDGING - BAPTISTE COLLETTE BAR CHANNEL DREDGING REGION

1.1 SCOPE

1.2 MEASUREMENT AND PAYMENT

1.2.1 Base Item: Preparatory Work For Baptiste Collette Dredging Region

1.2.2 Option Item: Bird Nesting Prevention and Avoidance Measures

1.2.3 Non-Standard Dredging Conditions

1.2.4 Dredging and Option Dredging Items

1.2.5 Airboat

1.3 EXISTING STRUCTURES OR UTILITIES

PART 2 PRODUCTS

2.1 AIRBOAT

PART 3 EXECUTION

3.1 DREDGING

3.1.1 Dredging Region

3.1.1.1 Baptiste Collette Bar Channel

3.1.2 Dredge Discharge Pipeline

3.1.3 Before and After Disposal Surveys

3.1.4 Before and After Dredging Cross-Sections

3.1.5 Survey Data

3.2 COLONIAL NESTING BIRDS

3.2.1 General

3.2.2 Implementation and Reporting

3.2.3 No Work Distances

3.2.4 Bird Nesting Prevention and Avoidance Measures

3.2.5 Discovery of Bird Nests at the Work Site

3.3 PREVIOUS DREDGING CONTRACTS

3.4 MINIMUM PRODUCTION RATE REQUIREMENTS

3.5 HORIZONTAL AND VERTICAL CONTROL POINTS

ATTACHMENTS:

Baptiste Collette Bar Channel Maintenance Dredging Plates

-- End of Section Table of Contents --

SECTION 35 20 23.23 16 Page 2

SECTION 35 20 23.23 16

HYDRAULIC DREDGING - BAPTISTE COLLETTE BAR CHANNEL DREDGING REGION

1.1 SCOPE

This section details specific requirements, which are in addition to the general requirements set forth in the specifications, for the Baptiste

Collette Bar Channel 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.

Payment for the work covered under this section shall be included in the contract unit price per hour for "Baptiste Collette Dredging" and "Baptiste

Collette Option Dredging" except for "Preparatory Work For Baptiste

Collette Dredging Region" and Option Item "Bird Nesting Prevention and

Avoidance Measures".

1.2.1 Base Item: Preparatory Work For Baptiste Collette Dredging Region

All costs associated with the mobilization of any dredge plant required for the Baptiste Collette Bar Channel Dredging Region that is in excess of what was required at the Algiers, IHNC, and Harvey Lock Forebays Dredging Region shall be included in the contract job price for "Preparatory Work For

Baptiste Collette Dredging Region". Once dredging operations are complete in Baptiste Collette, payment for final demobilization of the Contractor's plant and equipment shall be included in the contract job price for

"Mobilization and Demobilization".

1.2.2 Option Item: Bird Nesting Prevention and Avoidance Measures

All costs associated with Bird Nesting Prevention and Avoidance Measures shall be included in the contract unit price per day for Option Item "Bird

Nesting Prevention and Avoidance Measures". Pay time for this option item will be measured by the day. A day of performing the nest prevention measures is defined as dawn to dusk. Nest prevention measures shall be performed as described in the paragraph entitled "Bird Nesting Prevention and Avoidance 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

The following conditions will be considered non-standard:

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

SECTION 35 20 23.23 16 Page 3

b. Any locations within Baptiste Collette Bar Channel where the dredging template from station 270+00 to 330+00 yields less than a 150 foot swing width, and where the dredging template from station 330+00 to 590+00 yields less than a 250 foot swing width will be considered non-standard.

1.2.4 Dredging and Option Dredging Items

Reference Section 35 20 23.23, paragraph entitled "70% Pay Time Hours".

Movement of the dredge and attendant plant from the Algiers, IHNC, and

Harvey Lock Forebays Dredging Region to the Baptiste Collette Bar Channel

Dredging Region will be paid at 70% of the contract unit price per hour for

"Baptiste Collette Dredging".

1.2.5 Airboat

Upon request by the Contracting Officer or his/her authorized representative, the Contractor shall supply an airboat to the Government's inspectors and agents. Payment for the airboat shall be included in the

"Baptiste Collette Dredging" and "Baptiste Collette Option Dredging" payment items. When the Contracting Officer or his/her authorized representative requests an airboat for a specified date and/or time, the

Contractor shall have the airboat at the dredge ready for use. The

Contracting Officer or his/her authorized representative may request the airboat for either consecutive or non-consecutive day periods.

1.3 EXISTING STRUCTURES OR UTILITIES

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

Structure or Utility

Owner Information Approximate C/L

Station

Elevation

(feet MLG)

16-inch

Pipeline

Third Coast Midstream

Mr. Robin Asevado

2402 Bayou Road

St Bernard, LA 70085

Office: 504-800-6686

Cell: 504-812-7151 rasevado@3cmidstream.com

296+97 -22.0

(2) 6-inch

Pipelines

Lobo Operating, Inc. 300+57 -37.0

(2) 4-inch

Pipelines

Mr. Brian Daigle

202 Rue Iberville, Suite 101

Lafayette, LA 70508

Cell: 985-249-1771 (call first)

Office: 337-314-0700 brian.daigle@lobooil.com

26-inch

Pipeline

Third Coast Midstream

(see above)

355+76 -24.0 mailto:rasevado@3cmidstream.com mailto:brian.daigle@lobooil.com

SECTION 35 20 23.23 16 Page 4

Structure or Utility

Owner Information Approximate C/L

Station

Elevation

(feet MLG)

12-inch

Pipeline

Third Coast Midstream

(see above)

373+67 -24.0

2 3/8-inch pipeline

Anadarko Oil and Gas

1201 Lake Robbins Dr.

The Woodlands, TX 77380

1-800-800-1101 parallel to channel, running inside the east bank and through

Disposal Area

"G" unknown

20-inch

Delta Loop

Oil Pipeline

Shell Pipeline Company

Mr. Kelly Angelette

5317 Bayou Black Dr.

Gibson, LA 70356

Office: 985-858-2570

Cell: 985-688-7446 kelly.angelette@shell.com

543+53.57 -26.9

PART 2 PRODUCTS

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

2.1 AIRBOAT

The Contractor shall provide an airboat, fully operational, with operator and fuel. The airboat shall be capable of transporting three passengers and shall be equipped with noise protection for the passengers.

PART 3 EXECUTION

3.1 DREDGING

3.1.1 Dredging Region

3.1.1.1 Baptiste Collette Bar Channel

a. The authorized dimensions for Baptiste Collette Bar Channel are -14 feet Mean Low Gulf (MLG) by 150 feet bottom width from Station 270+00 to 320+00, with a transition to -16 feet MLG by 250 feet from Station 320+00 to 330+00, and -16 feet MLG by 250 feet from Station 330+00 to 590+00. The Contractor should note that Station 560+00 to 590+00 has never been dredged and consists of virgin material. The Contracting Officer or his/her authorized representative 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 2 feet below the authorized elevation and may be specified above the authorized dimensions when determined to be beneficial to the Government.

mailto:kelly.angelette@shell.com

SECTION 35 20 23.23 16 Page 5

b. Disposal of dredged material shall be at the Government's direction. Approved disposal sites are listed below and shown on the Baptiste Collette Bar Channel Maintenance Dredging Plates.

(1) Wetland Creation Sites/Disposal Areas "G" and "H": Material dredged between approximate C/L Stations 270+00 and 420+00 shall be placed unconfined in Disposal Area "G" and/or Disposal Area "H". If these wetland creation sites are utilized, Disposal Area "H" shall be used prior to using Disposal Area "G".

Dredged material shall be limited to a maximum initial elevation of +4.0 feet MLG, not to exceed +4.5 feet MLG, with an estimated final elevation of +2.5 feet MLG following dewatering and compaction.

For Disposal Area "G", the dredged material shall run in an east-northeasterly direction. For Disposal Area "H", disposal shall begin at the southern limit and proceed in a northerly direction. For Disposal Areas "G" and "H", the Contractor will be allowed a 150 foot access corridor to access the disposal area.

For Disposal Area "G", the 150 foot access corridor shall be between C/L Stations 356+80 and 375+80. For Disposal Area "H", the access corridor locations depicted on the plate are approximate and shall be approved by the Contracting Officer's

Representative prior to access operations. The Contractor shall take precautions to avoid/minimize damages to existing wetlands during access operations. The Contractor shall limit all construction, including placement and movement of discharge pipe, marsh buggies, airboats, personnel, and other equipment, to the disposal area and within the above referenced access corridors.

The Contractor shall take precautions, when accessing and performing disposal operations, in order to prevent damage to the existing rock jetties, existing wetlands (including Paul Island when disposing in "G"), as well as any pipelines and/or wells that fall either adjacent to or within the disposal area. At no time shall dredge effluent material be allowed to exceed one foot in height over existing vegetated wetlands. Once dredging operations are completed, the access corridor(s) shall be backfilled with disposal material to a maximum of two feet above existing adjacent marsh.

(2) Single Point Discharge (SPD)/Gunn Island: Material dredged between approximate C/L Stations 420+00 and 590+00 shall be placed on the bird breeding island, Gunn Island, east of the channel.

The elevation of the dredged material placed on the island shall not exceed +8.0 feet MLG, the purpose of which is to enhance the bird breeding island and maintain a final elevation of +6.0 feet

MLG after consolidation. Dredged material shall be initially discharged at the Single Point Discharge (SPD) location shown on the plate. The dredged material shall be placed in a manner such that the island's footprint expands in an easterly direction. The

Contractor shall maintain at all times a minimum distance of 2,000 feet at elevation 0.0 feet MLG, between all existing and new bird island locations.

3.1.2 Dredge Discharge Pipeline

The Contractor shall provide 15,000 feet of serviceable floating, submerged, or shore pipeline and all associated equipment as directed by the Government. See Section 35 20 23.23, paragraph entitled "Dredge

Discharge Pipeline", for additional information regarding pipeline

SECTION 35 20 23.23 16 Page 6 requirements.

3.1.3 Before and After Disposal Surveys

a. A before and after disposal survey shall be taken at the

Government's direction at each disposal site. Soundings and/or rod readings shall be recorded to the nearest tenth of a foot and the distance between soundings and/or rod readings shall not exceed 50 feet. The surveys shall extend to adequately cover the area impacted by dredged material placement.

a. Disposal Areas "G" and "H": The Contractor shall take a minimum of three disposal cross sections normal to the channel centerline before and after disposal operations. These cross sections shall be equally spaced across the proposed disposal footprint. For Disposal Area "G", the before disposal cross sections shall extend east approximately 1000 feet, and the before and after cross sections shall initiate at the waters edge of the previously filled portion of Disposal Area "G". In addition, for Disposal Areas "G" and "H", the Contractor shall take a minimum of three disposal cross sections parallel to the channel centerline. These cross sections shall be taken prior to and following placement of dredged material and at intervals and locations to be determined by the Contracting Officer's Representative. Spacing between the cross sections shall not exceed 500 feet. The width of the parallel cross sections shall cover the proposed disposal sites as shown on the plate.

b. Gunn Island: The Contractor shall take a minimum of three disposal cross sections normal to the channel centerline and a minimum of three disposal cross sections parallel to the channel centerline.

These cross sections shall be taken prior to and following placement of dredged material and at intervals and locations to be determined by the Contracting Officer's Representative. The before disposal cross sections shall extend a minimum of 1,000 feet and shall be centered on the SPD location.

The after disposal cross sections shall extend to adequately cover the area impacted by dredged material placement.

c. All surveys shall be tied/referenced to the centerline of the channel. All notes resulting from these surveys shall be presented to the Contracting Officer's Representative. The Contractor shall provide a topographic plot of each disposal site. The plot shall have contour intervals of not less than 1 foot and a scale of 1 inch = 100 feet.

The before and after disposal surveys shall be furnished to the

Government in a Microstation version 5.07.01.22 (or updated) design file containing survey elevations with contours in one foot increments. A hard copy of the before and after disposal surveys with contours shall also be furnished to the Government. All survey data shall be in NAD 83. Data shall also be furnished to the Government in a computerized IBM-compatible structured ASCII format on magnetic media. Each disk submitted shall bear a pre-printed disk label that provides for disk contents, have a write protect seal mechanism, and provide a space to indicate disk virus check. All disks submitted shall be virus checked, cleared of viruses if necessary, and all disk label entries completed. All disposal surveys shall be submitted and accepted before final payment is made to the Contractor. In addition, copies of the before and after disposal surveys shall be submitted to

Mr. Jeff Corbino electronically at Jeffrey.M.Corbino@usace.army.mil or by hard copy to the address listed below:

mailto:Jeffrey.M.Corbino@usace.army.mil

SECTION 35 20 23.23 16 Page 7

US Army Corps of Engineers

New Orleans District

Attn: Mr. Jeff Corbino, CEMVN-ODT-E

Room 291

7400 Leake Ave

New Orleans, LA 70118

3.1.4 Before and After Dredging Cross-Sections

In addition to the requirements in Section 35 01 50.73, paragraph entitled

"Before and After Dredging Cross Sections", the before and after dredging cross-sections of the channel shall be taken at approximately 200-foot intervals along the channel, as well as at all utility crossings and at all

P.C.'s, P.T.'s, P.I.'s, and P.O.T's. Depth soundings shall be made with the hydrographic surveying system and the recorded sounding density shall be one sounding for every five feet. The graphical chart layout must represent a scaled plan view of the survey area with the recorded five-foot interval depth soundings (0.1 ft. resolution) plotted at their x,y positions. The actual location of each sounding taken on each before dredging cross section range shall be provided in the form of a printout tabulation giving the actual distance of the soundings from the centerline

(on an azimuth normal to the centerline of the cut).

3.1.5 Survey Data

In addition to the requirements in Section 35 01 50.73, paragraph entitled

"Survey Data", the Contractor shall promptly plot the channel cross sections on a scale of 1 inch = 200 feet horizontal and 1 inch = 5 feet vertical.

3.2 COLONIAL NESTING BIRDS

3.2.1 General

Colonial nesting wading birds (including but not limited to, herons, egrets, and Ibis) and seabirds/water-birds (including, but not limited to terns, gulls, Black Skimmers, and Brown Pelicans) are known to nest in the project area. The nesting birds and their nests must not be disturbed or destroyed.