01_35_30.pdf

Sea Bright to Manasquan Reach SEABRIGHTMANASQU

AMENDMENT 1

SECTION 01 35 30

MUNITIONS AND EXPLOSIVES OF CONCERN (MEC) CONSTRUCTION SUPPORT

06/19

PART 1 GENERAL

1.1 SCOPE OF SECTION

The work required under this Section involves safety support and avoidance of potential unexploded ordnance and exploded ordnance, inert ordnance, and ordnance fragments and similar explosives debris material (defined and identified in these specifications as "Munitions and Explosives of Concern" (MEC)), within the dredging prism of the borrow area during performance of dredging activities.

1.2 UNIT PRICES

1.2.1 Measurement And Payment

a. If required, the work specified for UXO Technicians on a Hopper Dredge will be negotiated in accordance with Contract Clause "CHANGES". All other work specified in this section will not be measured for payment and all costs in connection therewith shall be included in the contract unit price for the respective Base Bid Items titled "Beachfill."

b. All costs in connection with any additional MEC Modifications and Monitoring required in connection with Option Bid Items titled "Beachfill", shall be included in the contract unit price for the respective option Bid Items titled "Beachfill". All costs associated with any non-production time (down time) related to the work specified in this section will be considered incidental to these bid items.

1.3 REFERENCES

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

DEPARTMENT OF DEFENSE EXPLOSIVES SAFETY BOARD (DDESB)

Technical Paper 18 (TP18) (2015) MINIMUM QUALIFICATIONS FOR

UNEXPLODED ORDNANCE (UXO) TECHNICIANS AND

PERSONNEL

1.4 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. Submittals with an "S" are for inclusion in the Sustainability Notebook, in conformance with Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

MEC Safety and Work Plan; G, RO

SECTION 01 35 30 Page 1

UXO Technician Qualifications; G, RO

SD-04 Samples

Discharge End Screening Device; G, RO

1.5 MEC IN BORROW AREAS

The borrow area for this project is located in the vicinity of a known World War I dumping site for Discarded Military Munitions (DMM).

1.6 UNEXPLODED ORDANCE (UXO) TECHNICIANS

Provide UXO Technicians as necessary and as specified below, having the qualifications as specified in Technical Paper 18 (TP18), which is included at the end of this section, as Appendix A. At a minimum, one of UXO Technicians shall be Tech III in accordance with Technical Paper 18 (TP18).

Other UXO Technicians may be Tech II's, (provided they have the capability to confer with the UXO Tech III as needed), or Tech I's, (provided they are under the direct supervision of a Tech II or III). UXO Tech I's cannot work by themselves. Prior to the start of dredging operations, submit the UXO Technician Qualifications of the UXO Technicians proposed to perform work for this project. Prior to the start of dredging operations with updates during the progress of work as needed, submit a list to the OESS of the individuals performing as UXO Technicians including their working schedule.

a. Land-based UXO Technicians: During beachfill operations the contractor will provide at a minimum one Unexploded Ordnance (UXO) Technician, One of the assigned UXO Technicians will be a Qualified UXO Technician III. (as specified in Department of Defense Explosives Safety Board (DDESB), Technical Paper 18 (TP18). The UXO Technician shall provide 24-hour, 7-days per week, MEC support, on the beach. The UXO Technician shall provide MEC Training and shall inspect the screening devices for damage and presence of MEC.

b. Onboard Hopper Dredge Support: If MEC is identified as being dredged from the borrow area, the Government will determine if the following requirements are necessary.

(1) Provide two Unexploded Ordnance (UXO) Technicians per dredge, One of which will be a UXO Technician III supervisor to be onboard at all times. (as specified in Department of Defense Explosives Safety Board (DDESB), Technical Paper 18 (TP18), which is included at the end of this section, as Attachment A. The UXO Technicians shall provide 24-hour, 7-days per week, MEC support, aboard the dredge on a rotating watch basis. The UXO Technicians shall provide MEC Training and shall inspect the dragheads for damage and presence of MEC after each load has been taken aboard.

(2) The UXO Technician III shall determine the classification of MEC-like objects discovered, shall dislodge MEC from the draghead(s) if required, and shall properly safeguard the MEC.

The Contractor shall provide a dedicated crewboat with crew for transportation of the Technician and MEC to a location as directed by the site OESS. The expected location is the crew boat berth at Barnegat Light. No other persons other than the boat crew and UXO Technicians shall be permitted on the crewboat during transportation of MEC.

SECTION 01 35 30 Page 2

(3) The UXO Technicians shall comply with the "STANDARD OPERATING

PROCEDURES FOR UXO TECHNICIANS PROVIDING MEC SUPPORT ABOARD HOPPER

DREDGES", which is included at the end of this section, as Attachment B. Provide support to the Technicians as required and specified in this attachment.

(4) Provide on-board accommodations and meals for the UXO technicians.

Include as part of the accommodations, internet access, and two bed spaces. Provide an on-board portable magazine/MEC containment vessel, as approved by the OESS, to securely store and transfer collected MEC items. Alternatively, if directed by the Contracting Officer, take on-board, secure and electrically ground, a portable magazine/MEC containment vessel provided by the Government, to be utilized for storage of MEC.

(5) If UXO Technicians are required, do not continue/commence dredging until the UXO Technicians are on-board the dredge.

(6) UXO Technician shall perform raking.

(7) UXO Technician shall meet the qualifications and be in accordance with Appendix B - STANDARD OPERATING PROCEDURES FOR LAND BASED UXO

TECHNICIANS PROVIDING MEC SUPPORT

1.7 GOVERNMENT-PROVIDED MEC SPECIALIST (OESS)

1.7.1 General

The Corps of Engineers Military Munitions Design Center will provide an Ordnance and Explosives Safety Specialist(s) (OESS) to oversee overall MEC safety and training. The OESS will be on-site or be on call in the vicinity to address problems as they arise during the duration of the placement of beachfill for this project. Contact the OESS in the event that an MEC or MEC-like item is located, however the UXO Technicians aboard a hopper dredge will perform this action. The OESS will provide guidance and coordinate emergency response. Stop dredging work immediately upon notification by the OESS of the need for inspection of intake and discharge screening devices during material placement operations to prevent MEC from being dredged and placed on the beach.

1.7.2 Pre-Construction Meeting

The OESS will attend the preconstruction meeting to answer any of the Contractor's questions concerning MEC.

1.7.3 MEC Safety and Work Plan Review

The OESS will review the Contractor's MEC Safety and Work Plan to ensure MEC aspects are adequately addressed. The Contractor's MEC Safety and Work Plan shall communicate the Contractor's understanding of his role and responsibility in the management of dredging and dredged material placement operations to prevent MEC from being dredged and placed on the beach.

1.7.4 Worker Education

The OESS will conduct or task the UXO Technicians to conduct MEC safety/awareness/ recognition training for the Contractor's dredging vessel and shore based workers, as well as Corps personnel. This training will be provided prior to the start of work on site, and to all newly reporting

SECTION 01 35 30 Page 3 personnel assigned to the project who have not attended MEC training in the previous twelve months. MEC Training is required once per 12 month period.

The MEC training video can be accessed at https://youtu.be/bGr4K_v6NjA

1.7.5 Quality Assurance (QA)

The OESS will monitor the beachfill operations on a periodic basis and will be on-site, or on-call in the vicinity to address problems as they arise.

Upon notification by the OESS or the UXO Technicians that the intake screening system on the dredge, or the discharge screening system on the beach, has degraded and is not functioning as intended, stop work and correct the deficiency to prevent MEC from being dredged and placed on the beach during material placement operations. A photo of the damage and repairs shall be submitted to the COR with the daily reports.

1.8 MEC SAFETY AND WORK PLAN REQUIREMENTS

Prior to commencement of any work, including delivery of any plant, equipment or construction materials to the site, submit a MEC Safety and Work Plan for MEC safety support and avoidance. The MEC Safety and Work Plan shall consist of the items as specified herein. Include MEC personnel qualifications.

a. Include the following in the MEC Safety and Work Plan:

(1) Shop drawings and detailed descriptions of the required screening devices on the dredge intake and at the discharge end of the pipeline. Also include the materials, equipment, procedures and personnel to be used in the construction, operations and oversight of such devices.

(2) Personnel, equipment, and procedures to be used to perform visual inspections at the discharge end of the pipeline on the beach.

(3) The measures to be followed if oversized material is discovered in the screening devices.

(4) The measures to be followed if oversized material is identified as deposited on the beach.

(5) The measures to be followed if MEC is discovered in the screening devices.

(6) The measures to follow if MEC is identified as deposited on the beach.

b. Coordinate the plan with the Job Hazard Analysis and the project Accident Prevention Plan to ensure worker safety and safety of the public is addressed at all times during the contract.

PART 2 PRODUCTS

Not Used

SECTION 01 35 30 Page 4

PART 3 EXECUTION

3.1 SCREENING DEVICES

3.1.1 General

a. Prevent MEC from being placed on the beach by: 1) a screening device placed on the dredge intake or in pipeline section prior to reaching the dredge pump, and; 2) at the discharge end of the pipeline on the beach. The required screening devices shall meet the following requirements:

(1) The screening device on the dredge intake shall prevent the passage of any material greater than 1.25 inches in diameter.

The openings on the screening device may have one dimension greater than the other. The maximum allowable opening is 1.25 inches x 6 inches.

(2) Design the Discharge End Screening Device to retain all items 0.75 inches in diameter and larger. The openings on the screening device shall be of uniform dimension (i.e. a grid or a series of round holes; slotted openings will not be permitted). Prior to commencement of any beachfill work, provide a working demonstration that intake and discharge end screening devices operate as designed, subject to approval by Contracting Officer.

(3) Construct the screening devices using rugged steel or composite material, one-piece or welded members. The devices shall cover the entire cross sectional area, except where basket type devices are used on the discharge end. Relief windows in basket type devices will be permitted only to the side opposite the inflow and at least 12 inches from the bottom of the basket, or as directed by the OESS. Size and locate windows to prevent large items, and MEC items from escaping the basket during pumping operations.

Keep basket type devices in a level and horizontal position when using relief windows, during pumping operations.

(4) The screening devices shall be removable for easy replacement if damaged. Ensure screening devices provide a production rate that allows completion of all dredging and beachfill placement within the contract duration.

(5) Demonstrate on-site, subject to approval of the Contracting Officer, the screening devices meet all requirements specified herein.

(6) Maintain adequate replacement parts and additional screening devices on site to insure production for the work does not stop due to damaged devices, or delays in the inspection process.

b. Provide minor adjustments to the beach screening baskets as directed by the OESS to accommodate varying types and amounts of material being screened at the beach, at no additional cost to the Government. As an example, relief windows, other than the required screen apertures, sometimes need to be enlarged, reduced, or relocated to minimize residual biological debris in the basket during the inflow process and for postflow MEC inspection of residual material.

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3.1.2 Dredge Cutterhead Screening Device

If a cutterhead dredge is used, provide an intake screening device for the cutterhead that meets the screen requirements specified above.

3.1.3 Draghead Modifications

If a hopper dredge is used, design the dragheads to prevent projectile shaped objects greater than 3 inches in diameter from being trapped between draghead teeth or between the draghead teeth and the dredge intake screening device. Make adjustments as necessary in the event projectile shaped objects become trapped in these areas, at no additional cost to the Government. Adjustments shall be completed and approved by the Contracting Officer or OESS prior to resuming dredging operations.

3.1.4 Inspection of Oversized Material

a. Design a method for inspection of all oversized material collected during beachfill pumping operations. Every effort shall be made to flush all sand out of the residual material to allow for 100 percent inspection.

Spread all oversized material to a one thickness layer for inspection by the UXO Technician. Spread the material either inside the discharge end screening device, in secondary containment, or on the beach on top of a liner, in a location above the high water line.

(1) Design any system that involves inspection of the oversized material inside the discharge end screening device with the following requirements:

(a) allow unrestricted entry or exit during times of inspector access, and

(b) sufficient size to allow the Contractor provided UXO inspector to move around the Cotractor provided raking through the material to inspect for MEC in the screening device.

(2) Ensure no loss of oversized material from any system that involves the movement of the screening device, or removing or rehandling of the oversized material to another location for inspection. Minimize the shock of the contents during the transfer to a secondary basket (in the event MEC is present). In addition, move all oversized material removed for inspection from the current operation area, and relocate to a remote area of the project site within the Contractor Work Limits for inspection. Keep uninspected material separate from previously inspected material.

(3) Design any system that involves inspection of the oversized material inside a secondary basket with the following requirements:

(a) allow unrestricted entry or exit during times of inspector access, and

(b) sufficient size to allow the inspector to move around and rake through the material to inspect for MEC in the screening device, and

(c) The amount of material placed in the secondary basket awaiting inspection shall not be more than 2 - 3 inches, or other amount as directed by the OESS to enable material to be spread to a one thickness layer to allow for 100 percent inspection.

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b. Upon inspection of the material by the UXO Technician, dispose of all oversized material off-site.

3.2 VISUAL INSPECTION OF PIPELINE DISCHARGE END

a. Visual inspections, by the Contractor's personnel (who have been trained and approved by the OESS), shall be performed at all times while material is being placed on the beach.

b. Visual inspections of the interior and exterior of the discharge-end screening device for the presence of MEC after each in-flow cycle for hopper dredging, and a minimum of once every 8 hours for hydraulic dredging, will be jointly conducted by designated NJDEP and Government QA personnel. Temporarily stop hydraulic dredging to allow for these inspections. At the Contractor's option, in-flow of material for hydraulic dredging may be Y valved to an alternate discharge screening device to allow for inspection of the primary screening device to avoid stoppage of dredging. The Contractor shall perform visual inspections from outside the screening device during pumping of beachfill material.

c. Do not enter a screening device containing material until the screening device has been inspected and cleared by the OESS. Under no circumstances shall a screening device be emptied until inspected and cleared, unless the material is being relocated to a secondary basket, or appropriate area of the beach on a liner for later inspection.

After material has been inspected and cleared, remove all debris collected in the screening device from the work site. The debris may be temporarily stored on-site in a dumpster or roll-off box. Do not bury any debris collected in the screening device in or on the beach.

3.3 INSPECTION OF INTAKE SCREEN

Inspect the intake or pipeline screening device a minimum of every 8 hours for hydraulic pipeline dredging, to ensure its effectiveness. Inspect every load for hopper dredging.

3.4 DETECTION OF MEC

a. Beach Basket; Stop work immediately upon notification by the UXO Technician, OESS, NJDEP, or the Government's QA inspector, that MEC larger than 1.25 inches (in its smallest dimension) is detected in a screening device, or any size MEC is detected on the beach. When MEC, as specified in the preceding sentence, is detected, implement the following procedures:

(1) All personnel shall withdraw 200 feet from the area where the MEC is detected.

(2) Stop dredging and beachfill work.

(3) Notify the OESS.

(4) Report the incident to the COR.

(5) Once a suspect MEC item has been located only a qualified UXO Technician III meeting the requirements of Technical Paper 18 (TP18) will positively identify the item for removal. In the event a MEC item cannot be positively identified

SECTION 01 35 30 Page 7 the OESS will contact supporting EOD unit to respond.

Technical Paper 18 (TP18) is attached to this section.

(6) Do not resume Beachfill and/or dredging work until notification from the Contracting Officer.

b. MEC on the Dredge in the Draghead or on the Deck; Stop dredging and beachfill work. No Crew member will attempt to dislodge or move suspect MEC item. Take photos if possible as long as no physical contact is made to suspect item. Contact UXO support and send photos if available. The UXO Technician III will contact the COR and OESS.

Arrangements will be made by the Contractor for the crew boat to transport the UXO Crew to the Dredge. The UXO Technician III and an additional UXO Technician will travel to the dredge and ensure a positive Identification of MEC item. The UXO Technician III will keep the OESS informed of all actions during this process. The OESS will direct the actions of the UXO Crew and coordinate emergency response after all information is gathered.

3.4.1 Contractor Support

Provide assistance as required by the emergency response agency. This will be coordinated by the OESS and may consist of such activities as digging holes with equipment for detonation of MEC items, and/or providing extra perimeter security during emergency response activities. The Contractor will not be required or expected to place site workers in hazardous situations during emergency responses to MEC at the project site.

3.5 DETECTION AND REMOVAL OF OVERSIZED MATERIAL

a. Stop work immediately and implement the following procedures when any item that physically should not be able to pass through the intake screening opening, and/or the discharge screening opening is detected in the discharge screening device or on the beach (This is a key identification that the dredge screens have failed and are in need of immediate repair).

(1) Stop dredging and beachfill work.

(2) Report the incident to the COR and the OESS.

(3) Repair the intake and/or discharge screening devices if necessary.

Take digital photos to document damaged screening device(s) and effected repairs. Submit photo's to the COR with daily reports.

(4) Beachfill and/or dredging work shall not resume until such cause is positively identified and steps taken to prevent recurrence, and upon subsequent notification from the Contracting Officer.

-- End of Section --

SECTION 01 35 30 Page 8

1.8 MEC SAFETY AND WORK PLAN REQUIREMENTS

3.5 DETECTION AND REMOVAL OF OVERSIZED MATERIAL