35_20_23_page_15_A0002.pdf

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Plymouth Harbor Maintenance Dredging Solicitation Amendment 0002
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W912WJ18B0021
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MAINTENANCE DREDGING, FEDERAL NAVIGATION PROJECT AMENDMENT 0002

PLYMOUTH HARBOR, PLYMOUTH MASSACHUSETTS

the Daily Quality Control Reports as required in Section 01 45 00 CONTRACTOR QUALITY CONTROL. A copy of the form used for Report of Operations is attached at the end of Section 01 45 00 CONTRACTOR

QUALITY CONTROL.

b. In addition to the daily report(s), the Contractor shall prepare a monthly Report of Operations for each month or partial month's work on ENG Form No. 4267 (Mechanical Dredging). The monthly report(s) shall be submitted to the Contracting Officer on or before the 7th of each month, consolidating the previous month's work. Upon completion of the project, the Contractor shall submit a consolidated project report, combining the monthly reports.

c. Additionally, one copy of the reports shall be maintained by the Contractor on each dredge for the Contracting Officer's inspection purpose. Further instructions on the preparation and submission of the reports will be provided at the Preconstruction Conference.

3.7 SHOALING

If, before the contract is completed, shoaling occurs in any section of the Federal Navigation Project (FNP) previously accepted, including shoaling in the finished channels, turning basin, and anchorage 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.

3.8 FINAL CLEANUP AND DEMOBILIZATION

a. Final cleanup shall include the removal of all the Contractor's plant and equipment either for disposal or reuse. Plant, equipment, and 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.

b. Failure to promptly remove all plant, equipment, temporary construction facilities, 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 to remove any plant, equipment, and materials at the Contractor's expense.

c. Failure to remove such items will result in the Contracting Officer withholding final contract payment until items are appropriately removed. The entire site shall be restored to pre-mobilization conditions to the Contracting Officer's satisfaction.

-- End of Section --

SECTION 35 20 23 Page 15

35 20 23 - MECHANICAL DREDGING
35 20 23 - MECHANICAL DREDGING
PART 1 GENERAL
1.1 REFERENCES
1.2 RELATED WORK SPECIFIED ELSEWHERE
1.2.1 Environmental Protection Requirements
1.2.2 Underwater Diving Operations
1.3 DEFINITIONS
1.3.1 Federal Navigation Project FNP
1.3.2 Maintenance Dredging
1.3.3 Maintenance Material
1.4 SUBMITTALS
1.5 ORDER OF WORK
1.6 ENVIRONMENTAL WINDOWS
1.7 NOTIFICATIONS
1.7.1 Notice of Misplaced Material
1.7.2 Notice of Need for Dredging Survey
1.7.3 Relocation of Navigation Aids
1.7.4 Placement of Dredging Aids
1.8 MATERIAL TO BE DREDGED
1.8.1 Results of Explorations
1.8.2 Debris
1.8.3 Artificial Obstructions and Other Material
1.8.4 Hard Material
1.9 DEBRIS MANAGEMENT
1.9.1 Existing Sewer Pipeline
1.10 EXISTING SITE CONDITIONS
1.11 WORK AREA
1.11.1 Access
1.11.1.1 Contractor Access
1.11.1.2 Emergency Access
1.11.2 Protection of Existing Waterways
1.11.3 Adjacent Property and Structures
1.11.4 Protection of Utility Lines
1.11.5 Unidentified Pipelines or Utilities
1.11.6 Safety of Structures
1.12 INSPECTION OF WORK
1.12.1 Method of Communication
1.12.2 Transportation
1.13 FUEL OIL HANDLING
1.14 FLOATS AND MOORINGS
1.14.1 Active Floats and Moorings
1.14.2 Derelict Moorings
1.15 PERMITS
1.16 BASIS FOR BIDS
PART 2 PRODUCTS
PART 3 EXECUTION
3.1 DREDGING PLANT AND ASSOCIATED EQUIPMENT
3.1.1 General Requirements
3.1.2 Dredging Plant
3.1.3 Associated Equipment
3.1.3.1 Tow Boats
3.1.3.2 Scows

3.1.4 Other Equipment

3.2 CONDUCT OF DREDGING WORK
3.2.1 General
3.2.2 Dredging Operation Plan
3.2.3 Interference with Navigation
3.2.4 Dredge Positioning System
3.2.5 Signal Lights
3.2.6 Method of Communication
3.2.7 Plant Removal
3.3 VESSELS USED FOR TRANSPORTING DREDGED MATERIAL
3.4 DISPOSAL OF DREDGED MATERIAL
3.4.1 Disposal Sites
3.4.2 Non-Designated Disposal Sites
3.5 DREDGING LIMITS
3.5.1 Allowable Overdepth
3.5.2 Side Slopes
3.5.3 Excessive Dredging
3.6 CONTRACTOR QUALITY CONTROL
3.7 SHOALING
3.8 FINAL CLEANUP AND DEMOBILIZATION

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