B.08.02 Amendment 0002, W912EP22B0008 Mayport & Navy Fuel Pier 111 FY23.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

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

FAR (48 CFR) 53.243

Maintenance Dredging, U.S. Naval Station Mayport, 50-Foot Project, & Navy Fuel Pier 111 38-Foot Project Duval County,Florida

See SF30 Continuation Sheet for Amendment Details.

The required response date/time has changed from 19-Oct-2022 02:00 PM EDT to 02-Nov-2022 01:00 PM EDT.

Delete FAR Clause 52.232-18 Availability Of Funds.

All other terms and conditions remain the same.

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.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 27

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

16C. DATE SIGNED

BY

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

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

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912EP22B0008

X 9B. DATED (SEE ITEM 11)

01-Sep-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

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

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

5. PROJECT NO.(If applicable)

6. ISSUED BY

3.EFFECTIVE

DATE

14-Oct-2022

CODE

USA ENGINEER DISTRICT, JACKSONVILLE

CONTRACTING DIVISION

701 SAN MARCO BLVD

JACKSONVILLE FL 32207-8175

W912EP 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EP22B0008 Amendment 0002

SF 30 CONTINUATION SHEET

MAINTENANCE DREDGING, U.S. NAVAL STATION MAYPORT,

50-FOOT PROJECT, & NAVY FUEL PIER 111 38-FOOT PROJECT

DUVAL COUNTY, FLORIDA

Amendment 0002

SUMMARY OF CHANGES

1. SPECIFICATIONS:

A. In some Volume 1 sections, asterisks appear before and after the line or lines where amendments have been made to the text, and pertain only to changes made by this amendment. In some cases, replacement clauses are attached to this amendment.

B. In Volume 2 sections, the text changes have been updated with additions noted by underlined text and deletions noted by line/cross-outs, and pertain only to changes made by this amendment. The entire section is replaced if there is any change.

The Project Table of Contents and Submittal Register are replaced without underlines and cross-outs if there are changes to these documents.

Changes to Specifications:

Volume 1 of 2 – Technical Specifications:

Delete instruction to bidders and replace with attached revised instructions to bidders.

Volume 2 of 2 – Technical Specifications:

DELETE Section 35 20 23 and REPLACE with the attached revised Section 35 20 23.

2. DRAWINGS:

DELETE Drawing G-01 and REPLACE with the attached revised Drawing G-01.

DELETE Drawing AC-15 and REPLACE with the attached revised Drawing AC-15.

DELETE Drawing BC-03 and REPLACE with the attached revised Drawing BC-03.

3. ADDITIONAL INFORMATION:

ODMDS Survey Data – Survey# 21-262.

(End of Summary of Changes)

M/D MAYPORT 50-FT & NFP 111 38-FT PROJECTS DUVAL, COUNTY

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23

DREDGING

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 NOTICE OF INTENT TO DREDGE

1.5 DREDGING RESTRICTIONS

1.5.1 Order of Work

1.5.2 Hopper Restriction

1.5.3 Transportation of Material

1.5.4 Mayport Vessel Movements

1.6 SPECIAL INSTRUCTIONS

1.7 PUMPING OF BILGES

1.8 EQUIPMENT AND PERFORMANCE DATA

1.9 HISTORICAL PERIOD SHIPWRECK SITES

1.10 UTILITY CROSSINGS

1.10.1 General

1.10.2 Known Utility Crossings

1.11 PERMITS

1.12 FUEL OIL TRANSFER OPERATIONS

1.13 SIGNAL LIGHTS

1.14 NOTICE TO MARINERS -- DREDGING CONTRACTS

1.15 FINAL CLEANUP

1.16 WORK VIOLATIONS

1.17 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SYSTEM (DREDGES AND

DUMP SCOWS)

1.17.1 System Requirements

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.1 DAILY/MONTHLY REPORT OF OPERATIONS

3.2 NOTIFICATION OF COAST GUARD

3.2.1 Relocation of Navigation Aids

3.2.2 Dredging Aids

3.2.3 Surveillance of Ocean Disposal

3.3 WORK AREA

3.3.1 Protection of Existing Waterways

3.3.2 Adjacent Property and Structures

3.3.3 Subaqueous Cable Crossings

3.4 CHARACTER OF MATERIALS

3.5 DISPOSAL OF EXCAVATED MATERIAL

3.5.1 General

3.5.2 Load Restrictions

SECTION 35 20 23 Page 1

3.5.3 Ocean Dredged Material Disposal Site (ODMDS)

3.5.4 Barges

3.5.5 Placing of Dredged Material

3.5.6 Dredge Pipelines

3.5.6.1 Dredge Discharge Pipeline

3.5.6.2 Submerged Pipeline

3.5.6.3 Floating Pipeline

3.5.7 Booster Pumps

3.5.8 Common Requirements for ODMDS Disposal

3.5.8.1 Spillage

3.5.8.2 Post-Dump Closure of Release Mechanisms

3.5.8.3 Mis-Dump

3.5.9 Misplaced Material

3.6 REQUIRED DEPTH, ALLOWABLE OVERDEPTH, AND SIDE SLOPES

3.6.1 Acceptance Sections

3.6.2 Required Depth

3.6.3 Allowable Overdepth

3.6.4 Side Slopes

3.6.5 Excessive Dredging

3.6.6 Areas to be Dredged

3.7 SURVEYS

3.7.1 General

3.7.2 Contractor Representative

3.7.3 Survey Certification

3.7.4 Tide Data

3.7.4.1 Real Time Kinematic (RTK) GPS

3.7.4.2 Kinematic Tidal Datum

3.8 DISPOSAL OF EXCAVATED MATERIAL

3.9 INSPECTION

3.9.1 Quality Assurance Representative (QAR)

3.9.2 Failure to Comply

3.10 FINAL EXAMINATION AND ACCEPTANCE

3.10.1 Final Examination of Work

3.10.2 Bed Leveling

3.10.3 Bed Leveling - Reporting and Documenting

3.10.4 Final Acceptance

3.11 SHOALING

3.12 CONTINUITY OF WORK

3.13 NOISE CONTROL

3.14 GENERAL DREDGING SAFETY REQUIREMENTS

3.14.1 Dredge Plant Restriction Definitions

3.14.1.1 Certification Required Line - Coast Guard Inspected

(CRL-C)

3.14.1.2 Certification Required Line - Load Line (CRL-L)

3.14.1.3 Certification Required Line - Hopper (CRL-H)

3.14.2 Certification of Attendant and Auxiliary Plant

3.14.3 Minimum Tow-Boat Requirements

3.14.4 Harbor Specific Dredging Restrictions

3.14.4.1 Jacksonville Harbor

3.15 CONSTRUCTION FORMS AND DETAILS

-- End of Section Table of Contents --

SECTION 35 20 23 Page 2

SECTION 35 20 23

DREDGING

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all labor, materials, and equipment, and performing all excavation and disposal of all material as specified herein and indicated on the drawings. This scope also includes all necessary measures for protection of the environment. Environmental protection requirements under this Contract are as important to overall completion of the work as other technical aspects. Failure to meet the requirements of these specifications for environmental protection may result in work stoppages or termination for default. No part of the time lost due to any such work stoppages can be made the subject of claims for extensions of time or for excess costs or damages by the Contractor. If the Contractor fails or refuses to promptly repair any damage caused by violation of the provisions of these specifications, the Contracting Officer may have the necessary work performed and charge the cost thereof to the Contractor.

1.2 REFERENCES

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

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

33 CFR 156.120 Requirements for Transfer

33 CFR 81 72 COLREGS: Implementing Rules

33 CFR 84 Annex I: Additional Signals for Fishing Vessels Fishing in Close Proximity

33 CFR 89 Inland Navigation Rules: Implementing Rules

U.S. ARMY CORPS OF ENGINEERS (USACE)

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

EM 1110-1-1000 (2015) Photogrammetric and LiDAR Mapping

EM 1110-1-1002 (2012) Survey Markers and Monumentations

EM 1110-1-1003 (2011) NAVSTAR Global Positioning System Surveying

EM 1110-1-1005 (2007) Control and Topographic Surveying

EM 1110-1-2909 (2012) Geospatial Data and Systems

SECTION 35 20 23 Page 3

EM 1110-2-1003 (2013) Hydrographic Surveying

ERDC/ITL TR-19-7 (2021) A/E/C CAD Standard - Release 6.1

FLORIDA BOARD OF PROFESSIONAL SURVEYORS AND MAPPERS (FBPSM)

FBPSM Minimum Technical Standards, Chapters 177, 472, 61G17

1.3 SUBMITTALS

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

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

SD-01 Preconstruction Submittals

Notice of Intent to Dredge

Relocation of Navigation Aids

Marine Survey Inspection Certificates

SD-02 Shop Drawings

Drag Bar

Acceptance Sections Plan ; G, DO

SD-07 Certificates

Equipment And Performance Data

Historical Period Shipwreck Sites

Surveys

Daily/Monthly Report of Operations

Misplaced Material

Declaration of Inspection

Surveillance of Ocean Disposal

1.4 NOTICE OF INTENT TO DREDGE

Prior to commencement of work on this contract, notify the Commander, Seventh Coast Guard District of intended operations to dredge and request that it be published in the Local Notice to Mariners. This notification must be given in enough time so that it appears in the Notice to Mariners at least two weeks prior to the commencement of this dredging operation.

Provide a copy of the notification to the Contracting Officer.

SECTION 35 20 23 Page 4

1.5 DREDGING RESTRICTIONS

1.5.1 Order of Work

The Entrance Channel of the U.S Naval Station Mayport project shall be the first order of work. The dredging performed by all dredges shall be continuous within the reaches approved by the Contracting Officer.

Multiple reaches may be worked simultaneously if multiple dredges are utilized by the Contractor.

1.5.2 Hopper Restriction

The use of hopper dredges is subject to seasonal restrictions. See Section 01 57 20 ENVIRONMENAL PROTECTION.

1.5.3 Transportation of Material

Water and dredge material are not permitted to overflow or spill out of barges or hopper dredges during transport to the disposal site.

1.5.4 Mayport Vessel Movements

Naval vessels arrive and depart at times on short notice, any movement of dredging operations required to allow unimpeded movements of the ships will be directed by the Contracting Officer.

1.6 SPECIAL INSTRUCTIONS

Dredging of insitu rock is not required; but if encountered, report the location and extent of any insitu rock above grade or required depth to the Contracting Officer.

1.7 PUMPING OF BILGES

Contractors are warned that pumping oil or bilge water containing oil into navigable waters, or into areas which would permit the oil to flow into such waters, is prohibited by Section 13 of the River and Harbor Act of 1899, approved 3 March 1899 (30 Stat. 1152; 33 U.S.C. 407). Violation of this prohibition is subject to the penalties under the referenced Acts.

1.8 EQUIPMENT AND PERFORMANCE DATA

If electronic positioning equipment is used, submit documentation of compliance with manufacturer recommendations for calibration to the Contracting Officer. Documentation may include a calibration report or some other documentation showing positioning equipment maintenance or verification results.

1.9 HISTORICAL PERIOD SHIPWRECK SITES

If any shipwreck, artifact, or other objects of antiquity that have scientific or historical value, or are of interest to the public, are discovered, located, and/or recovered, the Contractor acknowledges:

a. The site(s), articles, or other materials are the property of the State of Florida, with title vested in the Department of State, Division of Historical Resource.

b. To immediately notify the Contracting Officer.

SECTION 35 20 23 Page 5

1.10 UTILITY CROSSINGS

1.10.1 General

Investigate the location of all utility crossings. Take precautions against damages which might result from his operations in the vicinity of the utility crossings. Suspend dredging until the damage is repaired and approved by the Contracting Officer if any damage occurs as a result of dredging operations. Costs of such repairs and downtime of the dredge and attendant plant will be at the Contractor's expense.

1.10.2 Known Utility Crossings

Two utility crossings are located within the project limits. Both crossings lie below the allowable dredging depth but may be susceptible to damage caused by the placing of spuds or other deep penetrations of the bottom. The first lies near the junction of the Entrance Channel and the Turning Basin. The second lies inside the Turning Basin. Their approximate locations and depths are shown in the drawings.

In addition to the utility crossings, there are three areas within the project limits which contain submerged sensitive apparatus. These areas are shown in the drawings. The Contractor shall do no dredging, anchoring or make any other type of bottom contact.

The Contractor shall contact the Mayport Navy Public Works Center for further information concerning these submerged facilities and to coordinate work near them.

1.11 PERMITS

Refer to the Clause PERMITS AND RESPONSIBILITIES of Section 00700 CONTRACT CLAUSES in Volume 1 and the paragraph PERMITS AND AUTHORIZATIONS of Section 01 57 20 ENVIRONMENTAL PROTECTION.

1.12 FUEL OIL TRANSFER OPERATIONS

In accordance with U.S. Coast Guard regulations ( 33 CFR 156.120 ), couplings used in fuel oil transfer operations on any vessel with a capacity of 250 or more barrels of oil must be either a bolted or full-threaded connection; or a quick-connect coupling approved by the Commandant; or an automatic back-pressure shutoff nozzle used to fuel the vessel. Submit an executed fuel oil transfer (Declaration) form signed by the tanker operator to the Contracting Officer for each refueling operation. Notify the U.S. Coast Guard prior to any refueling. A copy of the Declaration of Inspection for Refueling is on the web site indicated in the paragraph CONSTRUCTION FORMS AND DETAILS below.

1.13 SIGNAL LIGHTS

Display signal lights and conduct operations in accordance with the General Regulations of the Department of the Army and of the Coast Guard governing lights and day signals to be displayed by towing vessels with tows on which no signals can be displayed, vessels working on wrecks, dredges, and vessels engaged in laying cables or pipe or in submarine or bank protection operations, lights to be displayed on dredge pipe lines, and day signals to be displayed by vessels of more than 65 feet in length moored or anchored in a fairway or channel, and the passing by other

SECTION 35 20 23 Page 6 vessels of floating plant working in navigable channels, as set forth in Commandant U.S. Coast Guard Instruction M16672.2, Navigation Rules:

International-Inland (COMDTINST M16672.2), or 33 CFR 81 Appendix A (International) and 33 CFR 84 through 33 CFR 89 (Inland) as applicable.

1.14 NOTICE TO MARINERS -- DREDGING CONTRACTS

If any objects are encountered on the channel bottom which could be a hazard to navigation during dredging operations, immediately notify the Contracting Officer of the location of said object and provide any other pertinent information necessary for the Contracting Officer to prepare and issue a Notice to Mariners.

1.15 FINAL CLEANUP

Final cleanup, as stated in the paragraph COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK of Section 00700 CONTRACT CLAUSES in Volume 1, includes the removal of all the Contractor's plant and equipment either for disposal or reuse. Dispose of plant and/or equipment and/or materials in a manner and at locations approved by the Contracting Officer. Unless otherwise approved by the Contracting Officer, the Contractor will not be permitted to abandon any equipment in the disposal area or other areas adjacent to the worksite. Failure to promptly remove all plant, pipeline, equipment, and materials upon completion of the dredging will be considered a delay in the completion of the final cleanup and demobilization work. In such case, the Government will exercise its right as stated in Clause DEFAULT (FIXED-PRICE CONSTRUCTION) of Section 00700 CONTRACT CLAUSES in Volume 1 to remove any plant and/or equipment and/or materials at the Contractor's expense.

1.16 WORK VIOLATIONS

Work done in violation of these specifications or a verbal or written stop order of the Contracting Officer will be considered as unsatisfactory progress for purposes of progress payments in accordance with Clause PAYMENTS UNDER FIXED-PRICE CONSTRUCTION CONTRACTS of Section 00700 CONTRACT CLAUSES in Volume 1.

1.17 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SYSTEM (DREDGES AND DUMP

SCOWS)

1.17.1 System Requirements

See Section 35 20 26 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW - ULLAGE PROFILE and Section 35 20 27 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM PIPELINE HYDRAULIC DREDGE and/or Section 35 20 28 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM HOPPER DREDGE. However, in the event of NDQMP System failure (not fully operational), notify the Contracting Officer. If the Contractor cannot use the NDQMP System within 48 hours of failure, cease all dredging operations for the vessel until the NDQMP System is fully operational. Any delays resulting from NDQMP System failure will be at the Contractor's expense. When required to calculate displacement, the density of water must be 64 pounds per cubic foot or its metric equivalent of 1027 kilograms per cubic meter.

SECTION 35 20 23 Page 7

PART 2 PRODUCTS (NOT USED)

PART 3 EXECUTION

3.1 DAILY/MONTHLY REPORT OF OPERATIONS

Prepare in RMS and submit one (1) signed hard copy and one (1) soft copy of the Daily Report of Operations, using either ENG Form No. 27A or ENG Form No. 4267, for each dredge and/or unloader working. Submit report daily and not in groups (groups = multi-days reports packaged together at one time). In addition to the daily report, prepare and submit a Monthly Report of Operations for each month or partial month's work on either ENG Form No. 27A or ENG Form No. 4267. Submit the monthly report on or before the 7th of each month, consolidating the previous month's work. Submit a consolidated job report combining the monthly reports upon completion of the construction. Distribute one copy of each report to the District Engineer; ATTN: CESAJ-EN-C; U.S. Army Engineer District, Jacksonville, P.O. Box 4970; Jacksonville, Florida 32232-0019. Submit reports on a monthly basis with daily reports accompanying the monthly report and job report. Additionally, maintain one copy of the form(s) of the dredge(s) for the Contracting Officer's inspection purpose. Further instructions on the preparation of the reports will be furnished at the Preconstruction Conference.

3.2 NOTIFICATION OF COAST GUARD

3.2.1 Relocation of Navigation Aids

Navigation aids located within or near the areas required to be dredged will be removed, if necessary, by the U.S. Coast Guard in advance of dredging operations. Within 7 calendar days following receipt of Notice to Proceed, notify the Commander, Seventh Coast Guard District, Miami, Florida, of any plans to dredge adjacent to any aids which require relocation to facilitate dredging. Send the notification via Fax to 305-415-6757, ATTN: Mr. Gene Stratten. Submit a formal written request after notification and provide a copy to the Contracting Officer. Contact the U.S. Coast Guard, 305-415-6750, for information concerning the position to which the aids will be relocated. Do not remove, change the location of, obstruct, willfully damage, make fast to, or interfere with any aid of navigation.

3.2.2 Dredging Aids

Obtain approval from the U.S. Coast Guard for all buoys, dredging aid markers to be placed in the water, and dredging aid markers affixed with a light prior to the installation. Do not color or place dredging aid markers and lights in a manner that they will obstruct or be confused with navigation aids.

3.2.3 Surveillance of Ocean Disposal

Notify via certified mail the local Coast Guard Captain of the Port at least 5 calendar days prior to the first ocean disposal and provide a copy to the Contracting Officer. Include the following information in the notification:

(1) Project designation; Corps of Engineers' Contracting Officer's name and contract number; and, the Contractor's name, address, and telephone number.

SECTION 35 20 23 Page 8

(2) Port of departure.

(3) Location of ocean disposal area.

(4) Quantity of material to be deposited in ocean.

(5) Schedule for ocean disposal, giving date and time proposed for first ocean disposal.

3.3 WORK AREA

The Contractor will be permitted to exclude the public from the work areas in the immediate vicinity of his dredging, transporting, and disposal operations. Enforcement is the Contractor's responsibility at no additional cost to the Government. Coordinate enforcement with local enforcement agencies and will be subject to approval of the Contracting Officer.

3.3.1 Protection of Existing Waterways

Conduct operations in such a manner that material or other debris are not pushed outside of dredging limits or otherwise deposited in existing side channels, basins, docking areas, or other areas being utilized by vessels. Change the method of operations as may be required to comply with the above requirements. Should any bottom material or other debris be pushed into areas described above, as a result of the Contractor's operations, the same must be promptly removed by and at the expense of the Contractor to the satisfaction of the Contracting Officer.

3.3.2 Adjacent Property and Structures

No dredging will be permitted within 25 feet of any damage to private or public property or structures resulting from the Contractor's negligence will result in suspension of dredging and require prompt repair at the Contractor's expense as a prerequisite to the resumption of dredging.

3.3.3 Subaqueous Cable Crossings

Verify the locations and depths of all utility crossings and take precautions against damages which might result from the operations, especially the sinking of dredge spuds and/or anchors into the channel bottom, in the vicinity of utility crossings. If any damage occurs as a result of the operations, suspend dredging until the damage is repaired and approved by the Contracting Officer. Costs of such repairs and downtime of the dredge and attendant plant will be at the Contractor's expense.

3.4 CHARACTER OF MATERIALS

a. Materials to be removed under this Contract are described in Section 00 31 32 GEOTECHNICAL DATA REPORT as referred to in Section 01 11 00

SUMMARY OF WORK.

b. Due to typical harbor activities, debris such as trash, rope, chain, cable, tires, miscellaneous scrap metal, woody debris, etc., may be encountered in the channel. Bring all such materials to the surface and dispose of in a disposal area obtained by the Contractor in a manner approved by the Contracting Officer.

SECTION 35 20 23 Page 9

3.5 DISPOSAL OF EXCAVATED MATERIAL

3.5.1 General

Disposal shall be initiated when the vessel is completely within the designated disposal release zone as shown on the drawings, and the disposal vessel shall not leave the ODMDS boundary until the release doors or split-hull sections are fully closed.

Transport and deposit material excavated in the disposal area designated on the drawings. The approximate maximum and average distances, in nautical miles (nm), to which the material will have to be transported are as follows:

Disposal Area Maximum Distance Average Distance

ODMDS Zone "A" 7.2 nm 4.9 nm

ODMDS Zone "B1" 20.0 nm 20.0 nm

3.5.2 Load Restrictions

Adjusted load volume restrictions exist for portions of Bar Cut-3, Mayport Entrance Channel, Turning Basin and Small Boat Basin. There are load and placement restrictions imposed which are dependent on which Dredge Material Management Unit (DMMU) is being utilized. Refer to the plans for those designations and load restrictions. All other dredging areas are restricted to 9,000 cubic yards for mechanical and 13,500 cubic yards for hopper dredges. Load volume includes both material and water inside the hull.

3.5.3 Ocean Dredged Material Disposal Site (ODMDS)

Material excavated from the U.S. Naval Station Mayport Project shall be transported to and deposited in Release Zone "A" of the ODMDS as shown on the drawings. Dredged material shall not be placed higher than elevation -25 feet MLLW in Release Zone "A".

Material excavated from the Navy Fuel Pier 111 Project shall be transported to and deposited in Release Zone "B1" of the ODMDS as shown on the drawings. Dredged material shall not be placed higher than elevation -25 feet MLLW in Release Zone "B1".

3.5.4 Barges

Water and dredged materials are not be permitted to overflow or spill out of barges or dump scows during transport to the disposal site. Failure to repair leaks or change the method of operation which is resulting in overflow or spillage will result in suspension of dredging operations and require prompt repair or change of operation to prevent overflow or spillage as a prerequisite to the resumption of dredging.

3.5.5 Placing of Dredged Material

During placement of dredged material in the disposal areas, provide an attendant at each disposal area to maintain constant radio contact with the dredge. This will enable the Contractor's personnel at the disposal areas to immediately notify the dredge in the event of pipeline failure.

In the event of or pipeline failure, suspend the dredging operations and

SECTION 35 20 23 Page 10 promptly repair of the pipeline as a prerequisite to the resumption of dredging.

3.5.6 Dredge Pipelines

3.5.6.1 Dredge Discharge Pipeline

Plainly mark the pipeline access routes with conspicuous stakes, targets and/or buoys to be maintained throughout the contract operations.

Maintain a tight dredge discharge pipeline to prevent spilling of dredged material or dredge water outside of the disposal area. Provide and maintain radio communication between the dredge and the disposal areas and the dredge and the Contracting Officer. Inspect the pipeline at least twice daily for leaks. Failure to immediately repair leaks in the discharge pipeline will result in suspension of dredging operations and require prompt repair of pipeline as a prerequisite to the resumption of dredging. Repair any damage to private or public property resulting from the Contractor's operations at the Contractor's expense.

3.5.6.2 Submerged Pipeline

In the event the Contractor elects to submerge the pipeline, rest the pipeline on the bottom, and the top of the submerged pipeline and any anchor securing the submerged pipeline cannot be no higher than the required project depth for the channel in which the submerged pipeline is placed. If a pipeline material which is buoyant or semi-buoyant, such as PVC pipe or similar low-density materials is used, securely anchor the pipeline to prevent the pipeline from lifting off the bottom under any conditions. Conduct daily inspections of the submerged pipeline to ensure buoyancy has not loosened the anchors. Remove all anchors when the submerged pipeline is removed. Mark the location of the entire length of submerged pipeline with signs, buoys, lights, and flags conforming to U.S.

Coast Guard regulations.

3.5.6.3 Floating Pipeline

Should the Contractor's pipeline not rest on the bottom, it will be considered a floating pipeline and will be visible on the surface and clearly marked. In no case will the Contractor's pipeline be allowed to fluctuate between the surface and the bottom or lie partly submerged.

Install lights on the floating pipeline as required in paragraph SIGNAL LIGHTS above. Support the lights either by buoys or by temporary piling, provided by the Contractor and approved by the Contracting Officer. Where the pipeline does not cross a navigable channel, space the flashing yellow all-around lights not over 200 feet apart, unless closer spacing is required by U.S. Coast Guard personnel, in which case the requirements of the U.S. Coast Guard will govern, at no additional cost to the Government.

3.5.7 Booster Pumps

Install booster pumps at least 300 feet from any residential-type building or house. Provide booster pumps, their prime movers, and any auxiliary equipment fitted or equipped with mufflers, noise control enclosures, or other engineering noise control methods, measures, and features such that steady noise emanating from this equipment does not exceed 85 decibels on the A scale at slow response, and impulsive noise does not exceed 140 decibels. Maintain such items throughout the course of the work.

SECTION 35 20 23 Page 11

3.5.8 Common Requirements for ODMDS Disposal

3.5.8.1 Spillage

Water and excavated material shall not be permitted to overflow, leak out, or spill out of the barges, dump scows, or hopper dredges while in transit to the ODMDS release zones. Transit to the ODMDS begins as soon as dredged material loading into the disposal vessel is completed and the vessel begins moving to the ODMDS. Failure to repair leaks or change the method of operation which is resulting in the overflow, leakage, or spillage will result in suspension of dredging operations and require prompt repair or change of operation to prevent overflow, leakage, or spillage as a prerequisite to the resumption of dredging. Appropriate measures may include, but are not limited to, up-to-date U.S. Coast Guard and/or American Bureau of Shipping certification of all disposal-related vessels, maintenance (inspection and/or replacement) of gaskets on barge doors, minimization of excess free liquids in barge loads, pre-transit testing of barge door hydraulics, and pre-transport verification of appropriate weather and sea state conditions. Notify the Contracting Officer within 24 hours if any apparent leaking or spilling of dredged material occurs as indicated by an average loss of draft during transit from the dredging area to the disposal release zones (forward draft loss plus aft draft loss divided by 2) in excess of 1.5 feet. Excessive leakage may be classified as a mis-dump and pay deducted for the entire load.

3.5.8.2 Post-Dump Closure of Release Mechanisms

All hopper doors, dump scow doors, or split hull dumping mechanisms shall be closed and sealed prior to existing the ODMDS site boundaries. In the case where the Contractor encounters a mechanical issue preventing hopper doors, dump scow doors, or split hull dumping mechanisms from fully closing, the operator shall circle within the boundaries of the ODMDS a minimum of three times prior to exiting the site. In the event that a dump vessel exits the ODMDS with open doors, notify the Contracting Officer immediately of the occurrence. All mechanical issues must be resolved prior to the vessel returning to service under this contract, and the Contracting Officer shall be informed of the actions taken.

3.5.8.3 Mis-Dump

Any scow load or hopper dredge load that is released outside the boundaries of the release zone as shown on the drawings will be classified as a mis-dump and will result in a suspension of dredging operations.

Mis-dump material will be treated in accordance with the provisions of the subparagraph "Misplaced Material" below.

3.5.9 Misplaced Material

Notify the U.S. Coast Guard Marine Safety Office of any misplaced material as stated in the Clause OBSTRUCTION OF NAVIGABLE WATERWAYS of Section 00700 CONTRACT CLAUSES in Volume 1. Materials deposited outside of the ODMDS disposal area(s) will be classified as misplaced material and will result in a suspension of dredging operations. Redredging of such materials will be required as a prerequisite to the resumption of dredging unless the Contracting Officer, at their discretion, determines that redredging of such material is not practical. If redredging of such material is not required, then the quantity of such misplaced material will be deducted from the Contractor's pay quantity. If the quantity for

SECTION 35 20 23 Page 12 each misplaced load to be deducted cannot initially be agreed to by both the Contractor and Contracting Officer, then an average hopper/scow load quantity for the entire contract will be used in the determination.

Materials deposited above the maximum indicated elevation or outside of the disposal area template shown will require the degrading or removal of such materials at the Contractor's expense. The Contractor will not be held responsible for erosion caused by waves after the material has been satisfactorily placed. In addition, the Contractor must notify the Contracting Officer and the Environmental Protection Agency within 24 hours of a misplaced dump or any other violation of the Site Monitoring and Management Plan for Jacksonville ODMDS. Implement corrective actions by the next dump and inform the Contracting Officer of actions taken.

3.6 REQUIRED DEPTH, ALLOWABLE OVERDEPTH, AND SIDE SLOPES

3.6.1 Acceptance Sections

For purposes of payment, the work to be done will be divided into acceptance sections. Prior to any dredging, prepare and provide a proposed Acceptance Sections Plan for approval by the Contracting Officer. Generally, the work should be divided into areas that equate to approximately 30 days of dredging or that constitute separable or definable features of work. Acceptance sections for beach disposal are not for payment, but only to accept disposal work as complete in accordance with the requirements herein.

3.6.2 Required Depth

The material actually removed from the designated areas to be dredged, to a depth of not more than the required depth shown on the drawings, will be estimated and paid for in accordance with the provisions contained in the subparagraphs EXCAVATION, UNCLASSIFIED of Section 01 22 00 MEASUREMENT AND

PAYMENT.

3.6.3 Allowable Overdepth

To cover the inaccuracies of the dredging process, material actually removed from the designated areas to be dredged, to a depth below the required depth of not more than the allowable overdepth shown on the drawings, will be measured and paid for in accordance with the provisions contained in the subparagraph EXCAVATION UNCLASSIFIED of Section 01 22 00

MEASUREMENT AND PAYMENT.

3.6.4 Side Slopes

Although dredging of side slope material may be necessary to provide the required project channel dimensions (depth and width), the side slopes shown on the drawings are provided for payment purposes only. Side slopes may be formed by box cutting, step cutting, or dredging along the side slope. Material actually removed, within the limits approved by the Contracting Officer, to provide for final side slopes not flatter than that shown on the contract drawings, but not in excess of the amount originally lying above this limiting side slope, will be measured and paid for in accordance with the provisions contained in subparagraphs EXCAVATION UNCLASSIFIED of Section 01 22 00 MEASUREMENT AND PAYMENT. Such amount will be estimated and paid for whether dredged in original position or by box cut dredging whereby a space is dredged below the allowable side slope plane on the bottom of the slope for upslope material capable of falling into the cut. End slopes and transition slopes will not be

SECTION 35 20 23 Page 13 estimated or paid for under this contract. In such cases, a 0 horizontal on 1 vertical will be used with no upslope allowance provision applied outside the required prism.

3.6.5 Excessive Dredging

It is recognized that the limits of dredging need to extend beyond the pay prism in order to remove material from within the pay prism. Therefore, the limits of active dredging may exceed the limits of the pay prism in vertical dimension as well as horizontal dimension to the extent necessary to remove material from the pay prism. Indirect impacts (sideslope sloughing, etc.) may extend even beyond the limits of active dredging.

Nevertheless, material taken from beyond the limits of the pay prism as described in subparagraphs ALLOWABLE OVERDEPTH and SIDE SLOPES above will be deducted from the total amount dredged as excessive overdepth dredging, or excessive sideslope dredging, for which payment will not be made.

Nothing herein will be construed to prevent payment for the removal of shoals performed in accordance with the applicable provisions of the paragraphs FINAL EXAMINATION AND ACCEPTANCE or SHOALING of this Section.

3.6.6 Areas to be Dredged

Based on information currently available to the Government, areas known to require dredging are depicted on the drawings as shaded areas. The actual areas to be dredged may vary from the shaded areas shown in the drawings.

In order to provide the required project dimensions within and throughout the project limits shown on the drawings, remove material located within the project limits as directed by the Contracting Officer, regardless of whether the material is in a shaded area or not. Payment for all dredged material dredged from a shaded area will be made at the applicable contract unit price. Payment for all material dredged from a non-shaded area may be made at the applicable contract unit price; however, the Contractor may request an adjustment to the contract unit price in accordance with DFAR Clause 252.243-7002 REQUESTS FOR EQUITABLE ADJUSTMENT and/or FAR Clause 52.243-4 CHANGES of Section 00700 CONTRACT CLAUSES in Volume 1.

3.7 SURVEYS

3.7.1 General

Provide 10 advance notice, in writing, to the Contracting Officer of the need for a pre-dredging survey or after-dredging survey for final acceptance for each acceptance section. Surveys will be performed in accordance with the paragraph QUANTITY SURVEYS of Section 00700 CONTRACT CLAUSES in Volume 1; paragraph LAYOUT OF WORK of Section 01 11 00 SUMMARY OF WORK; Section 01 45 05 DREDGING/BEACH FILL PLACEMENT - CONTRACTOR

QUALITY CONTROL; EM 1110-1-1000 , EM 1110-1-1002 , EM 1110-1-1003 ,

EM 1110-1-1005 , EM 1110-1-2909 , and EM 1110-2-1003 ; FBPSM; and, ERDC/ITL TR-19-7 . A copy of the EM's can be downloaded from the following web site:

http://www.publications.usace.army.mil/USACEPublications/EngineerManuals.aspx.

A copy of the ERDC/ITL TR-19-7 can be downloaded from the following web site: https://cadbimcenter.erdc.dren.mil/default.aspx?p=a&t=1&i=2.

3.7.2 Contractor Representative

The Contractor or his authorized representative will be notified when soundings and/or sweepings are to be made and will be offered the

SECTION 35 20 23 Page 14 opportunity to be on board the Government survey vessel, but may decline the offer. All in-place measurement surveys and final acceptance sweep surveys will be performed by the Government. The Contractor's representative must be fully knowledgeable in offshore construction subsurface surveying procedures, techniques, equipment, and horizontal and vertical calibration methods, and state-of-the-art horizontal and vertical accuracy limitations. The Contractor's representative may observe and review, in progress, the adequacy and accuracy of the survey for in-place payment purposes, and for the potential existence of collusion, fraud, or obvious error in the data.

3.7.3 Survey Certification

a. Immediately upon completion of any survey, the Contractor's representative, based on their on-site review of the survey execution, determine that the survey contains no evidence of collusion, fraud, obvious error, and that subsequent horizontal and vertical corrections are accurately annotated on the subsurface record.

b. The Contractor's authorized representative must bring aboard the survey vessel a blank copy of the Certification Statement and attest to an acceptable survey by signing the Certification Statement before leaving the vessel. Sample copy of the Certification Statement is on the web site indicated in paragraph CONSTRUCTION FORMS AND DETAILS below.

c. If the Contractor's authorized representative observes (and quantifies) specific documentary evidence of either fraud, collusion, or obvious error, the survey will be immediately rerun. Resurveys will totally supersede any previously run survey and will be run over the full reach of any Acceptance Section.

d. If acceptability is not acquired after performing one resurvey of an Acceptance Section, a meeting will be held between the Contractor and the Contracting Officer to expeditiously resolve the issue causing rejection of the survey. Contractor equipment and personnel standby time to resolve acceptability of the survey will be at the Contractor's expense.

e. In no case will a previously unacceptable survey be later judged acceptable by the Contractor; unless such a reassessment/reevaluation is performed within 24 hours after the original survey, and prior to initiating any resurvey action based upon identifiable collusion, fraud, or obvious error.

f. Should the Contractor or their authorized representative refuse to certify to the acceptability of a survey for contract payment without identifiable collusion, fraud, or obvious error, then the following actions will follow:

(1) Preconstruction (pre-dredging) Survey: Do not commence excavation until representatives of the Contractor and Contracting Officer have met and resolved the basis for refusal of certification.

Should the Contractor commence excavation prior to obtaining an acceptable survey, the Contractor will be liable for any excavation performed. If a resurvey is performed, and accepted, prior excavation will not be measured, estimated, or paid for.

(2) Post-Construction (after-dredging) Survey: The 2-week survey

SECTION 35 20 23 Page 15 window allowed under subparagraph EXCAVATION, UNCLASSIFIED of Section 01 22 00 MEASUREMENT AND PAYMENT will be indefinitely extended until a final survey is accepted. Any material accretion which might occur due to such a time extension will neither be measured, estimated, or paid for.

(3) Refusal to Certify: Contractor equipment and personnel standby time to resolve refusal to certify to the acceptability of a survey when there is no identifiable collusion, fraud, or obvious error will be at the Contractor's expense and resultant delays will not be the basis for time extensions of the contract.

g. Intermediate surveys taken between the pre-dredging and post-dredging surveys will not be considered for the purposes of determining quantities for final payment and acceptance of the area dredged.

3.7.4 Tide Data

3.7.4.1 Real Time Kinematic (RTK) GPS

The Government will utilize RTK GPS for determining Real Time water levels (tide corrections) for measurement and payment purposes. Providing all applicable RTK equipment for surveying and dredging operations.

3.7.4.2 Kinematic Tidal Datum

A file listing the separations between NAVD 88 and the Chart Datum (Mean Lower Low Water) will be provided to the Contractor for entry into the hydrographic survey software. Obtain the Kinematic Tidal Datum file from the Construction Representative prior to commencing surveying and dredging operations.

3.8 DISPOSAL OF EXCAVATED MATERIAL

3.9 INSPECTION

3.9.1 Quality Assurance Representative (QAR)

The QAR will be notified prior to the establishment of horizontal control work (baseline layout, ranges, station flags, shore-based control for EPS/RPS, etc.) and vertical control work (tide staff(s), upland cross sections, construction elevations top/invert, maximum/minimum elevations of dredged materials within disposal area(s), etc.), but the presence or absence of the QAR will not relieve the Contractor of their responsibility for proper execution of the work in accordance with the specifications.

The Contractor will be required:

a. To furnish, on the request of the Contracting Officer or any QAR, the use of such boats, boatmen, laborers, and material forming a part of the ordinary and usual equipment and crew of the dredging plant as may be reasonably necessary in inspecting and supervising the work.

b. To furnish, on the request of the Contracting Officer or any QAR, suitable transportation from all points on shore designated by the Contracting Officer to and from the various pieces of plant, and to and from the disposal area.

SECTION 35 20 23 Page 16

3.9.2 Failure to Comply

In conjunction with the Clause INSPECTION OF CONSTRUCTION of Section 00700 CONTRACT CLAUSES of Volume 1, should the Contractor refuse, neglect, or delay compliance with these requirements, the specific facilities may be furnished and maintained by the Contracting Officer and the cost thereof will be deducted from any amounts due or to become due the Contractor.

3.10 FINAL EXAMINATION AND ACCEPTANCE

3.10.1 Final Examination of Work

As soon as practicable and no later than two (2) weeks after the completion of the entire work or any section thereof (if the work is divided into sections) as in the opinion of the Contracting Officer will not be subject to damage by further operations under the contract, such work will be thoroughly examined at the cost and expense of the Government by sounding or by sweeping, or both, as determined by the Contracting Officer. Should any shoals, lumps, or other lack of contract depth be disclosed by this examination, the Contractor will be required to remove same by dragging the bottom in accordance with the subparagraph BED LEVELING below or by dredging at the contract rate of dredging.

The Contractor or authorized representative will be notified when soundings and/or sweepings are to be made and will be permitted to accompany the survey party. When the area is found to be in a satisfactory condition, it will be accepted finally. Should more than two sounding or sweeping operations by the Government over an area be necessary by reason of work for the removal of shoals disclosed at a prior sounding or sweeping, the cost of such third and any subsequent soundings or sweeping operations will be charged against the Contractor at the rate of $10,200 per day for each day in which the Government plant is engaged in sounding or sweeping and/or is in route to or from the site or held at or near the said site for such operation.

3.10.2 Bed Leveling

Bed leveling by dragging the bottom with a drag bar or other apparatus will be allowed only in the designated dredging areas shown on the drawings. Dragging in areas outside of the designated dredging areas shown on the drawings is specifically prohibited without written approval of the Contracting Officer. Submit drawings and one photograph showing drag bar equipment used for final leveling work.

3.10.3 Bed Leveling - Reporting and Documenting

Fully document all bed leveling activity including date and time for initiation and completion of bed leveling in the Contractor's Quality Control Report (QCR).

3.10.4 Final Acceptance

Final acceptance of the whole or a part of the work and the deductions or corrections of deductions made thereon will not be reopened after having once been made, except on evidence of collusion, fraud or obvious error, and the acceptance of a completed section will not change the time of payment of the retained percentages of the whole or any part of the work.

SECTION 35 20 23 Page 17

3.11 SHOALING

If, before the Contract is completed, shoaling occurs in any section previously accepted, including shoaling in the finished channel because of the natural lowering of the side slopes, redredging at contract price, within the limits of available funds may be done if agreeable to both the Contractor and the Contracting Officer.

3.12 CONTINUITY OF WORK

Full payment for, and formal acceptance of acceptance sections, will not be rendered until the acceptance section is excavated to the full depth and extent required by this contract, except by decision of the Contracting Officer. The Contracting Officer reserves the right to withhold the invoiced amounts necessary to protect the Government's interests until acceptance of an acceptance section is achieved.

3.13 NOISE CONTROL

Equip all hauling and excavating equipment and dredges, dredge/barges, boats, and tugs used on this work with satisfactory mufflers or other noise abatement devices. Conduct the operations to comply with all Federal, State and local laws pertaining to noise. Limit the use of horns and whistle signals to the minimum necessary in order to ensure as quiet an operation as possible.

3.14 GENERAL DREDGING SAFETY REQUIREMENTS

3.14.1 Dredge Plant Restriction Definitions

To increase the safety of dredges on Federal contracts, the contract plans, and specifications may identify a location within the Federal channel (usually indicated by a channel station or navigation aid) requiring minimum equipment standards. This is a Certification Required Line (CRL). The following are specific designations that may apply to this Contract.

3.14.1.1 Certification Required…