Group_4-10-R-J037_Revision0003.pdf

GROUP4-10-R-J037 SF1442-A1 Revision 0003

ADDENDUM TO THE STANDARD FORM 1442

Tampa Harbor, Maintenance Dredging, 34 and 43-Foot Project, Hillsborough Bay (HB), Ybor Channel, Upper and Lower Sparkman, Port Sutton and East Bay, and St. Petersburg Harbor, Maintenance Dredging, 24-Foot Project, Entrance Channel and Turning Basin, Hillsborough and Pinellas Counties, Florida

SPECIAL NOTIFICATION: THIS OPPORTUNITY IS AVAILABLE ONLY TO THE FOLLOWING

CONTRACTORS AWARDED A CONTRACT UNDER SOLICITATION NUMBER

W912EP-10-R-0026: Orion Marine Construction (W912EP-13-D-0003); Cavache, Inc.

(W912EP-13-D-0004); Cashman Dredging & Marine Contracting (W912EP-13-D-0005);

Cottrell Contracting Corporation (W912EP-13-D-0006); Great Lakes Dredge & Dock Company, LLC (W912EP-13-D-0007); Dutra Dredging Company (W912EP-13-D-0008);

Marinex Construction, Inc. (W912EP-13-D-0009); Norfolk Dredging Company (W912EP-13- D-0010); Mike Hooks, Inc. (W912EP-13-D-0011); Weeks Marine, Inc. (W912EP-13-D-0012);

Southern Dredging Co., Inc. (W912EP-13-D-0013); Manson Construction Company (W912EP-13-D-0014); C. F. Bean LLC (W912EP-13-D-0015) PROPOSALS WILL NOT BE

CONSIDERED FROM ANY ENTITY OTHER THAN THE PREVIOUSLY LISTED FIRMS

INCLUDED IN THE Group 4 Dredging MATOC Pool.

TECHNICAL EVALUATION: The award of the task order will be made on the basis of Lowest Price, Technical Acceptable (LPTA); the technical evaluation factors are:

(1) Availability of technically acceptable dredge(s).

(2) Past performance, to include the MATOC (The government reserves the right to obtain copies of all Contractor Performance Assessment Reporting System (CPARS) records contained in the US Army Corps of Engineers CPARS database for the Prime Contractor (Offeror) and all Major Sub-Contractors).

SUBMISSION REQUIREMENTS: Contractors are required to submit the following:

(1) A letter on company letterhead identifying the dredge(s) the contractor proposes to do the work and the location of dredge(s). The identified dredge(s) must also have been found technically acceptable by the Contracting Officer prior to the proposal due date.

(2) Completed Bid Schedule (see Section 00010A)

(3) Bid Guarantee per Section 00700, Clause 52.228-1 and Section 00100A, Paragraph 2.4(c) of the MATOC

(4) Completed “Addendum to the Standard Form 1442 with the latest revision”.

(5) Revisions – Offers must acknowledge receipt of this Revision by completing “Notice to Offerors--Blocks 14, 15 and 20” of each revision.

THE FOLLOWING INFORMATION IS APPLICABLE ONLY TO THIS TASK ORDER:

Block 9 -- For additional information contact:

Tonya M. Rogers 904-232-1084 Tonya.M.Rogers@usace.army.mil.

Block 10 -- Magnitude of Construction is between $5,000,000.00 and $10,000,000.00.

GROUP4-10-R-J037 SF1442-A2 Revision 0003

Block 11 -- The Contractor shall begin performance within 45 calendar days and complete it within 180 calendar days after receiving notice to proceed. This performance period is mandatory. NOTE: If there are optional line items, refer to FAR 52.211-10 for breakdown of period of performance.

Block 12 -- The contractor must furnish any required performance and payment bonds within 10 calendar days after award of the task order.

Block 13 -- Sealed offers to perform the work required shall be delivered to the following address not later than August 01, 2017 at 2:00 P.M. Local Time.

USA Engineer District, Jacksonville Contracting Division 701 San Marco Blvd

Jacksonville, Florida 32207-8175

NOTICE TO OFFERORS: Offerors are to complete Blocks 14, 15, and 20 below:

Block 14 -- Name and Address of Offeror (including Zip Code):

DUNS: ___________________ CAGE: _______________

Block 15 -- Telephone No. (include area code): _____________________

Block 20 -- Name and Title of Person Authorized to Sign Offer (type or print):

Type/Print ________________________________________________

Signature: ________________________________________________ e-Mail: ________________________________________________

Offer Date: _______________________________________________

Block 26 -- This Task Order will be administered by:

Tampa Resident Office 4211 W. Boy Scout Blvd Suite 170

Tampa, FL 33607-5767

Block 27 -- Payment will be made by:

USACE Finance Center 5722 Integrity Drive

ATTN: CEFC-AO-P

Millington, TN 38054-5005

GROUP4-10-R-J037 Revision 0003

SF 30 CONTINUATION SHEET

Tampa Harbor, Maintenance Dredging, 34-Foot and 43-Foot Project St. Petersburg Harbor Maintenance Dredging, 24-Foot Project

Hillsborough and Pinellas Counties, Florida Revision 0003

SUMMARY OF CHANGES

1. SPECIFICATIONS:

A. In some Volume 1 sections, asterisks appear before and after the line or lines where revisions 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:

N/A.

Volume 2 of 2 – Technical Specifications:

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

2. DRAWINGS:

DELETE Sheet C-04b and REPLACE with attached revised Sheet C-04b

(End of Summary of Changes)

Tampa Harbor, Maintenance Dredging, 34 and 43-Foot Project GROUP4-10-R-J037 St. Petersburg Harbor, Maintenance Dredging, 24-Foot Project

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 DREDGING RESTRICTIONS

1.4.1 Order of Work

1.4.2 Transportation of Material

1.5 SPECIAL INSTRUCTIONS

1.5.1 Coordination with Concurrent Contract

1.5.2 Debris Disposal

1.6 PUMPING OF BILGES

1.7 HISTORICAL PERIOD SHIPWRECK SITES

1.8 UTILITY CROSSINGS

1.8.1 General

1.9 PERMITS

1.10 FUEL OIL TRANSFER OPERATIONS

1.11 SIGNAL LIGHTS

1.12 NOTICE TO MARINERS -- DREDGING CONTRACTS

1.13 FINAL CLEANUP

1.14 WORK VIOLATIONS

1.15 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SYSTEM (HOPPER

DREDGES AND DUMP SCOWS)

1.15.1 System Requirements

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION

3.1 NOTIFICATION OF COAST GUARD

3.1.1 Navigation Aids

3.1.2 Dredging Aids

3.2 WORK AREA

3.2.1 Access

3.2.2 Protection of Existing Waterways

3.2.3 Adjacent Property and Structures

3.2.4 Subaqueous Cable Crossings

3.3 DISPOSAL OF EXCAVATED MATERIAL

3.3.1 General

3.3.2 Upland Disposal Area

3.3.2.1 Material Placement

3.3.2.2 Maximum Height of Dredged Materials

3.3.2.3 Disposal Area Drainage

3.3.2.4 Existing Weirs

3.3.2.5 Existing Outfall Pipes

SECTION 35 20 23 Page 1 Revision 0003

3.3.3 Barges

3.3.4 Placing of Dredged Material

3.3.5 Dredge Pipelines

3.3.5.1 Dredge Discharge Pipeline

3.3.5.2 Submerged Pipeline

3.3.5.3 Floating Pipeline

3.3.6 Booster Pumps

3.3.7 Misplaced Materials

3.4 REQUIRED DEPTH, ALLOWABLE OVERDEPTH, AND SIDE SLOPES

3.4.1 Required Depth

3.4.2 Allowable Overdepth

3.4.3 Side Slopes

3.4.4 Excessive Dredging

3.4.5 Areas to be Dredged

3.4.6 Acceptance Sections

3.5 SURVEYS

3.5.1 General

3.5.2 Contractor Representative

3.5.3 Tide Data

3.5.3.1 Real Time Kinematic (RTK) GPS

3.5.3.2 Kinematic Tidal Datum

3.6 INSPECTION

3.6.1 Quality Assurance Representative (QAR)

3.6.2 Failure to Comply

3.7 FINAL EXAMINATION AND ACCEPTANCE

3.7.1 Final Examination of Work

3.7.2 Bed Leveling

3.7.3 Bed Leveling - Reporting and Documenting

3.7.4 Final Acceptance

3.8 SHOALING

3.9 CONTINUITY OF WORK

3.10 NOISE CONTROL

3.11 DREDGE CERTIFICATION

3.12 GENERAL DREDGING SAFETY REQUIREMENTS

3.12.1 Certification of Attendant and Auxiliary Plant

3.12.2 Minimum Tow-Boat Requirements

3.13 CONSTRUCTION FORMS AND DETAILS

-- End of Section Table of Contents --

SECTION 35 20 23 Page 2 Revision 0003

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 or 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 shall 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. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 Safety and Health Requirements Manual

EM 1110-1-1000 (1993) Photogrammetric Mapping

EM 1110-1-1002 (1990) Survey Markers and Monumentation

EM 1110-1-1003 (1996) NAVSTAR Global Positioning System Surveying

EM 1110-1-1004 (1994) Deformation Monitoring and Control Surveying

EM 1110-1-2909 (1998; Chg 2) Geospatial Data and Systems

EM 1110-2-1003 (2013) Engineering and Design, Hydrographic Surveying

FLORIDA BOARD OF PROFESSIONAL SURVEYORS AND MAPPERS (FBPSM)

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

SECTION 35 20 23 Page 3 Revision 0003

TRI-SERVICE STANDARDS (TSS)

TSS (2006) A/E/C CADD Standards

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. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Notice of Intent to Dredge

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

Relocation of Navigation Aids

The Contractor shall not remove, change the location of, obstruct, willfully damage, make fast to, or interfere with any aid to navigation. Within 7 calendar days following receipt of Notice of Award, the Contractor shall notify the Commander, Seventh Coast Guard District, Miami, Florida, of his plan to dredge adjacent to any aids which require relocation to facilitate dredging. The notification shall be sent via Fax to 305-415-6757, ATTN: Mr. Gene Stratten. This notification shall be immediately followed by a formal written request with a copy to the Contracting Officer. The Contractor shall also contact the U.S.

Coast Guard, 305-415-6750, for information concerning the position to which the aids will be relocated.

Dredge Pumpout Capacity

Prior to commencement of work on this contract, the Contractor shall submit to the Contracting Officer their expected maximum pump out rate in CFS and expected maximum daily dischared volume (CF) of the slurry mixture into DMPF 3D.

SD-02 Shop Drawings

Drag Bar ; G, RO

Submit drawings and one photograph showing drag bar equipment used for final leveling work indicated in the paragraph FINAL EXAMINATION AND ACCEPTANCE below.

Acceptance Sections Plan ; G, RO

Submit an acceptance sections plan for approval by the Government prior to commencement of work. See subparagraph

SECTION 35 20 23 Page 4 Revision 0003

"Acceptance Sections" in paragraph REQUIRED DEPTH, ALLOWABLE OVERDEPTH, AND SIDE SLOPES below.

SD-07 Certificates

Historical Period Shipwreck Sites

The Contractor shall immediately notify the Contracting Officer 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.

Surveys

The Contractor shall give 10 days 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.

Daily/Monthly Report of Operations

The Contractor shall prepare on QCS and submit one (1) hard 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.

This report shall be submitted on a daily basis and not in groups (groups = multi-days reports packaged together at one time). In addition to the daily report, the Contractor shall prepare a Monthly Report of Operations for each month or partial month's work on either ENG Form No. 27A or ENG Form No. 4267. The monthly report shall be submitted on or before the 7th of each month, consolidating the previous month's work. Upon completion of the job, the Contractor shall submit a consolidated job report, combining the monthly reports. The Contractor shall 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. Reports shall be submitted on a monthly basis with daily reports accompanying the monthly report and job report.

Additionally, one copy of the form(s) shall be maintained by the Contractor on 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.

Misplaced Material

The Contractor shall 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.

Declaration of Inspection for Refueling

Refer to paragraph FUEL OIL TRANSFER OPERATIONS below for submittal.

1.4 DREDGING RESTRICTIONS

Due to close proximity of the Peter O. Knight Airport and the Albert

SECTION 35 20 23 Page 5 Revision 0003

Whitted Airport , all construction cranes and other temporary facilities/equipment shall comply with the Federal Aviation Administration requirements. Contractor shall coordinate and obtain FAA approvals from Peter O. Knight Airport and Albert Whitted Airport in advance of construction activity which will affect the flight envelope for the airport.

The Contractor shall coordinate with the FAA for hours of permissible dredging operations within the flight envelopes for both Peter O. Knight and Albert Whitted Airports. After coordination, if an unexpected issue arises and the FAA prevents dredging operations within the previously permitted hours of dredging operations, the Contractor would be due standby costs based on the applicable CLIN hourly standby rate. The Contractor should schedule his dredging operations to minimize non-working time or delays outside of the FAA permitted work hours, since such delays will be at the Contractor's own cost.

1.4.1 Order of Work

The dredging within Port Sutton Turning Basin shall be completed before any other area within the scope of the project. The dredging of Port Sutton Turning Basin shall be completed no later than November 14th, 2017. The dredging performed by all dredges shall be continuous within reaches approved by the Contracting Officer.

1.4.2 Transportation of Material

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

1.5 SPECIAL INSTRUCTIONS

1.5.1 Coordination with Concurrent Contract

Another maintenance dredging contract will begin during the execution of this contract and will also utilize upland disposal site DMPF 3D. The Contracting Officer will determine the Contractor with the largest volumetric (CF) discharge per day into upland disposal site DMPF 3D and shall direct this Contractor as having overall management control of DMPF 3D. The Contracting Officer will direct the Contractor when to start and stop overall management of DMPF 3D. While having overall management control of DMPF 3D, the Contractor shall provide routine general inspection of DMPF 3D for erosion, scour, and damage to the embankments;

control the placement of weir riser boards and be solely responsible for meeting turbidity requirements for disposal site DMPF 3D under this contract. The Contractor shall not hinder or impede the work of "Others" while performing routine general inspection and shall only notify the Contracting Officer or the Contracting Officer's Representative if observations of concern are noted during this routine inspection. At the direction of the Contracting Officer, the Contractor shall coordinate transferring overall management control to "Others" in a manner that does not stop or delay any dredging operations under any contracts associated with disposal into DMPF 3D during the transition of control. The Contractor transferring overall management control shall provide written documentation at the time of transfer to the Contracting Officer and to "Others" stating that overall management control of Upland Disposal Area DMPF 3D has been transferred from (Contractor Name) to (Receiving Entity Name) and dated Month, Day, Year & Hour.

SECTION 35 20 23 Page 6 Revision 0003

1.5.2 Debris Disposal

Due to typical harbor activities, debris such as sand blasting grit, wire rope, metal beams, trash, rope, chain, cable, tires, miscellaneous scrap metal, woody debris, etc., may be encountered in the Ybor Channel, Upper Sparkman Channel, St. Petersburg Harbor Turning Basin and Entrance Channel adjacent to the St. Petersburg Harbor Turning Basin. All such materials shall be brought to the surface and disposed of in a manner approved by the Contracting Officer in a disposal area obtained by the Contractor. A description of the sand blasting grit material can be found in each GDR.

1.6 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.

1.7 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 that:

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; and that,

b. Contractor shall immediately notify the Contracting Officer.

1.8 UTILITY CROSSINGS

1.8.1 General

It is the Contractor's responsibility to investigate the location of all utility crossings. The Contractor shall take precautions against damages which might result from his operations in the vicinity of the utility crossings. If any damage occurs as a result of his operations, the Contractor will be required to 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 shall be at the Contractor's expense.

1.9 PERMITS

The Contractor's attention is directed 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.

1.10 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 shall 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. An executed fuel oil transfer (Declaration) form signed by the

SECTION 35 20 23 Page 7 Revision 0003 tanker operator shall be submitted to the Contracting Officer for each refueling operation. The U.S. Coast Guard shall also be notified 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.

1.11 SIGNAL LIGHTS

The Contractor shall 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 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.

1.12 NOTICE TO MARINERS -- DREDGING CONTRACTS

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

1.13 FINAL CLEANUP

Final cleanup, as stated in the paragraph COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK of Section 00700 CONTRACT CLAUSES in Volume 1, shall include the removal of all the Contractor's plant and equipment either for disposal or reuse. Plant and/or equipment and/or materials to be disposed of shall only be disposed 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.

1.14 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.

SECTION 35 20 23 Page 8 Revision 0003

1.15 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SYSTEM (HOPPER DREDGES

AND DUMP SCOWS)

1.15.1 System Requirements

See Section 35 20 26 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW - ULLAGE PROFILE and Section 35 20 28 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM HOPPER DREDGE. However, in the event of NDQMP System failure (not fully operational), the Contractor shall notify the Contracting Officer and continue tracking using ETS (see paragraph "Electronic Tracking System (ETS) for Ocean Disposal Vessels" below) for up to 48 hours until the NDQMP System is fully operational and in use. If, upon NDQMP System failure, the Contractor cannot use ETS or cannot use the NDQMP System within 48 hours of failure, all dredging operations for the vessel shall cease until the NDQMP System is fully operational. Any delays resulting from NDQMP System failure shall be at the Contractor's expense. When required to calculate displacement, the density of water shall be 64.0 pounds per cubic foot or its metric equivalent of 1025 kilograms per cubic meter.

PART 2 PRODUCTS (NOT APPLICABLE)

PART 3 EXECUTION

3.1 NOTIFICATION OF COAST GUARD

3.1.1 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. The Contractor shall not remove, change the location of, obstruct, willfully damage, make fast to, or interfere with any aid of navigation.

3.1.2 Dredging Aids

The Contractor shall 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. Dredging aid markers and lights shall not be colored or placed in a manner that they will obstruct or be confused with navigation aids.

3.2 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 including dredging, transporting, and disposal operations.

Enforcement shall be the Contractor's responsibility at no additional cost to the Government. The enforcement shall be coordinated with local enforcement agencies and will be subject to approval of the Contracting Officer.

3.2.1 Access

The Contractor shall be responsible for providing and maintaining access necessary for his equipment and plant to and from the work site, mooring area, and disposal area. The Contractor shall ascertain the environmental conditions which can affect the access such as climate, winds, currents, waves, depths, shoaling, and scouring tendencies.

SECTION 35 20 23 Page 9 Revision 0003

3.2.2 Protection of Existing Waterways

The Contractor shall conduct his 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. The Contractor will be required to change his 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.

3.2.3 Adjacent Property and Structures

Any damage to private or public property or structures resulting from the disposal or dredging operations shall be repaired promptly by the Contractor at his expense. Any damage to structures as a result of 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.

3.2.4 Subaqueous Cable Crossings

The Contractor shall be responsible for verifying the locations and depths of all utility crossings and take precautions against damages which might result from his 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 his operations, the Contractor will be required to 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 shall be at the Contractor's expense. No spudding or anchoring shall take place within the hatched regions shown on the plans.

3.3 DISPOSAL OF EXCAVATED MATERIAL

3.3.1 General

Material excavated from Tampa Harbor and St. Petersburg Harbor shall be transported to and deposited in disposal area DMPF (Dredge Material Placement Facility) 3D, as designated on the drawings. The average distance from Tampa Harbor to which the material will have to be transported is approximately 7 miles and the maximum distance is approximately 8.6 miles. The average distance to which the material from St. Petersburg Harbor will have to be transported is approximately 14.5 miles and the maximum distance will be approximately 16.6 miles.

3.3.2 Upland Disposal Area

3.3.2.1 Material Placement

Dredged material shall be placed in the disposal area at a maximum distance from the weirs to insure sufficient settling time so that the effluent will meet the turbidity requirements specified in Section 01 57 25 TURBIDITY AND DISPOSAL MONITORING. The dredged material shall be placed in the disposal area in such a manner as to not scour out or damage the crown and side slopes of the existing dikes. Damage to dikes or scouring of the crown and side slopes shall be repaired by the Contractor to their original pre-award condition at no additional cost to the Government. The

SECTION 35 20 23 Page 10 Revision 0003

Contractor shall not cut into or modify the upland disposal site dike section for any reason. In the event that the contractor excavates, cuts into, or modifies the upland disposal site dike, the dredging operations shall be immediately suspended and require prompt repair of the dike as a prerequisite to the resumption of dredging.

3.3.2.2 Maximum Height of Dredged Materials

Dredged materials and/or water shall not be placed higher than 2.5 feet below the lowest point of the dike crest. The Contractor shall constantly monitor the water height while pumping to insure that this clearance is maintained. Materials deposited in the disposal area above the maximum height or outside the disposal area will result in suspension of dredging operations and require the removal of such materials as a prerequisite to the resumption of dredging.

Drainage of exterior areas adjacent to the diked disposal area shall not be blocked or impaired in any manner by the Contractor's operations. The Contractor shall excavate and maintain ditches necessary to prevent blocking or impairing drainage. The ditches shall be of adequate number and size to eliminate all blockage or impairment of drainage adjacent to the diked disposal area.

3.3.2.3 Disposal Area Drainage

The Contractor shall, if necessary, excavate and maintain ditches to drain all low areas in the dredged material and disposal area to the weirs. The ditches shall be of adequate number and size to eliminate all ponding of water in the dredged material above the elevation of the weir invert.

3.3.2.4 Existing Weirs

a. The existing weirs shall be operated by the Contractor to control discharge of disposal area effluent during disposal and decanting operations. Riser boards for the weirs are stored on site in a secure location as shown on the drawings. Access to the riser boards will be provided by the Contracting Officer's Representative.

b. The Contractor shall install riser boards in the weirs to a crest elevation which produces an effluent quality meeting the turbidity requirements specified in Section 01 57 25 TURBIDITY AND DISPOSAL MONITORING. The Contractor shall wedge the riser boards in place and seal the end and between-board joints as needed to prevent soil slurry and turbid water from passing through the weirs.

c. Upon completion of disposal operations, all weirs shall be left in place and the Contractor shall adjust the elevations of the crests to provide for complete drainage without ponding of the disposal area for a minimum of 15 days. The elevation adjustment to the weirs shall be the same on all weirs in the disposal area. The weir's riser boards shall be removed one row at a time. The next row of boards shall not be removed until the water level is drawn down to not more than one inch above the weirs' crest. This process shall be continued until the interface with the suspended dredged material is reached. After the interface is reached, the Contractor shall continue to inspect the disposal area until completion of his/her work under this contract, and he/she shall remove another row of boards each time the material has consolidated sufficiently so that it will not flow from the disposal area. The effluent from this final drainage for eliminating ponding

SECTION 35 20 23 Page 11 Revision 0003 shall meet the applicable requirement specified in Section 01 57 20 ENVIRONMENTAL PROTECTION and/or Section 01 57 25 TURBIDITY AND DISPOSAL MONITORING. The Contractor shall provide at least hourly inspection of the weirs during final drainage of the areas and raise the weir boards if necessary to stop the effluent if it does not meet the applicable requirements. This inspection shall be at closer intervals, if necessary, during periods of rain and when the water level is approaching the interface.

3.3.2.5 Existing Outfall Pipes

The Contractor shall ensure that all weirs and outfall pipes are operational for this dredging event. The Contractor shall inspect, clean out and repair outfall pipes for safe operation of the weirs. The contractor shall inspect outfall shoreline stabilization for signs of scour and failure prior to starting dredging operations and upon completion. Repairs shall be made to return the weir systems to their intended function if necessary. The contractor shall inspect these areas during the pre-bid, disposal area site visit, estimate materials and equipment required to complete the work, and include this cost in the lump sum price for the "Mobilization and Demobilization" line item in the Line Items and Pricing Schedule (Section 00010A).

3.3.3 Barges

Water and dredged materials shall not be permitted to overflow or spill out of barges or dump scows during transport to the disposal site(s).

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.

3.3.4 Placing of Dredged Material

During placement of dredged material in the disposal area, the Contractor will be required to provide constant radio contact between the dredge and the disposal area. This will enable the Contractor's personnel at the disposal area to immediately notify the dredge in the event of dike or pipeline failure. In the event of dike or pipeline failure, the dredging operations shall be immediately suspended and require prompt repair of the dike or pipeline as a prerequisite to the resumption of dredging.

3.3.5 Dredge Pipelines

3.3.5.1 Dredge Discharge Pipeline

The Contractor shall plainly mark the pipeline access routes with conspicuous stakes, targets and/or buoys to be maintained throughout the contract operations. A tight dredge discharge pipeline shall be maintained to prevent spilling of dredged material or dredge water outside of the disposal area. The Contractor shall provide and maintain radio communication between the dredge and the disposal area and the dredge and the Contracting Officer. The Contractor shall coordinate with the COR in the field on the pipeline route over and into DMPF-3D. The pipeline shall be inspected 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. Any damage to private or public property resulting from the Contractor's operations shall be

SECTION 35 20 23 Page 12 Revision 0003 repaired by the Contractor at his expense.

3.3.5.2 Submerged Pipeline

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

3.3.5.3 Floating Pipeline

Should the Contractor's pipeline not rest on the bottom, it will be considered a floating pipeline and shall 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.

Lights shall be installed on the floating pipeline as required in paragraph SIGNAL LIGHTS above. The lights shall be supported 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, the flashing yellow all-around lights shall be spaced 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 shall govern, at no additional cost to the Government.

3.3.6 Booster Pumps

Any booster pumps installed by the Contractor shall be located at least 300 feet from any residential-type building or house. Booster pumps, their prime movers, and any auxiliary equipment shall be 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. Such items shall be maintained throughout the course of the work.

3.3.7 Misplaced Materials

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.

3.4 REQUIRED DEPTH, ALLOWABLE OVERDEPTH, AND SIDE SLOPES

3.4.1 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

SECTION 35 20 23 Page 13 Revision 0003 subparagraphs "Measurement" and "Payment" of Section 01 22 00 MEASUREMENT

AND PAYMENT.

3.4.2 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 subparagraphs "Measurement" and "Payment" of Section

01 22 00 MEASUREMENT AND PAYMENT.

3.4.3 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 "Measurement" and "Payment" 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 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.

3.4.4 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 shall 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.

3.4.5 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, the Contractor shall remove material located within the project limits as directed by the Contracting Officer, regardless of whether the material is located in a shaded area or not. Payment for all dredged material dredged from a shaded area will be

SECTION 35 20 23 Page 14 Revision 0003 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.

3.4.6 Acceptance Sections

For purposes of payment, the work to be done will be divided into acceptance sections. Prior to any dredging, the Contractor shall 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.

3.5 SURVEYS

3.5.1 General

The Contracting Officer shall be notified, in writing, 10 days in advance of the need for pre-dredging and after-dredging surveys. Surveys will be performed in accordance with the paragraph QUANTITY SURVEYS of Section 00700 CONTRACT CLAUSES in Volume 1; Section 01 45 05 DREDGING/BEACH FILL

PLACEMENT - CONTRACTOR QUALITY CONTROL; EM 1110-1-1000 , EM 1110-1-1002 ,

EM 1110-1-1003 , EM 1110-1-1004 , EM 1110-1-2909 , and EM 1110-2-1003 ; FBPSM;

and, TSS. A copy of the EM's can be downloaded from the following web site: http://140.194.76.129/publications/eng-manuals/. A copy of the TSS can be downloaded from the following web site:

https://cadbim.usace.army.mil/.

3.5.2 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 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 shall 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.

3.5.3 Tide Data

3.5.3.1 Real Time Kinematic (RTK) GPS

The government will utilize RTK GPS for determining Real Time water levels (tide corrections) for measurement and payment purposes. The Contractor is responsible for providing all applicable RTK equipment for surveying and dredging operations.

3.5.3.2 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

SECTION 35 20 23 Page 15 Revision 0003 hydrographic survey software. The Kinematic Tidal Datum file shall be obtained from the Construction Representative prior to commencing surveying and dredging operations.

3.6 INSPECTION

3.6.1 Quality Assurance Representative (QAR)

The QAR shall 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 shall not relieve the Contractor of his 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.

3.6.2 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.

3.7 FINAL EXAMINATION AND ACCEPTANCE

3.7.1 Final Examination of Work

As soon as practicable and no later than three (3) 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 his 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

SECTION 35 20 23 Page 16 Revision 0003 of $5,500 per day for each day in which the Government plant is engaged in sounding or sweeping and/or is enroute to or from the site or held at or near the said site for such operation.

3.7.2 Bed Leveling

Bed leveling by dragging the bottom with a drag bar or other apparatus shall 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.

3.7.3 Bed Leveling - Reporting and Documenting

The contractor shall fully document all bed leveling activity including date and time for initiation and completion of bed leveling. All bed leveling activity shall be documented on the Contractor's Quality Control Report (QCR).

3.7.4 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 shall not change the time of payment of the retained percentages of the whole or any part of the work.

3.8 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.

3.9 CONTINUITY OF WORK

No payment will be made for work done in any area designated by the Contracting Officer until the full depth required under the contract is secured in the whole of such area, unless prevented by in-situ rock, nor will payment be made for excavation in any area not adjacent to and in prolongation of areas where full depth has been secured, except by decision of the Contracting Officer. Should any such nonadjacent area be excavated to full depth during the operations carried on under the contract, payment for all work therein may be deferred until the required depth has been made in the area intervening. The Contractor may be required to suspend dredging at any time when, for any reason, the gauges or ranges cannot be seen or properly followed.

3.10 NOISE CONTROL

All equipment and dredge/barges, boats, and tugs…