Pier 11 South Berth Expansion and Maintenance Dredging at Naval Station Norfolk, Norfolk, Virginia   3

The work includes New Dredging of Pier 11 South Berth Expansion Area and Maintenance Dredging of the outer berths of Piers 5 North and 6 North. Maintenance Dredging of the outer berths of Piers 5 North and 6 North and Non-POL Contaminated Material from the Berth Expansion Area may be dredged via conventional clamshell bucket, transported via sealed scow/barge and deposited into the CDMMA Rehandling Basin or pumped via hydraulic unloader to an upland cell of the Craney Island Dredge Material Management Area (CDMMA) or dredged via hydraulic cutterhead dredge and pumped directly upland cell of CDMMA. Location of deposition within Craney Island Project Site is subject to change and should be coordinated with the Army Corps of Engineers before dredging begins. A portion of the Pier 11S Berth Expansion area contains sediment contaminated with Petroleum, Oil and Lubricant (POL) material as shown on the plans.

The POL contaminated material shall be dredged via conventional clamshell bucket and disposed at an upland facilty as specified herein and on plans.

Dredging from on-site location and placement of sandy material to be used as side-slope capping (as shown on plans) shall be done via conventional clamshell bucket.

Additional work as shown on the plans and specification shall be performed, including but not limited to, placement of sandy capping material dredged on-site (as shown on plan) and rip-rap armor stone layers along southern and eastern side slopes of Berth Expansion Area to cap disturbed POL contaminated material remaining in place and removal and disposal of debris remaining after the past demolition of steel sheet piling cofferdam break water and timber breakwater structures. Remaining debris may include steel sheet piling stubs and timber piling stubs, concrete rubble and rip-rap stone.