US Army Corps of EngineersBUILDING STRONG®

Craney Island Dredged Material Management AreaAIWA Conference

Thomas C. Friberg, P.E.Chief, Operations Support SectionNorfolk District

November 18, 2010

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Dredged Material Management Area Proximity

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

NORTH CONTAINMENT CELL

CENTER CONTAINMENT CELL

SOUTH CONTAINMENT CELL

NORTH DIVISION DIKE

SOUTH DIVISION DIKE

spillways

No. 6

No. 5

No. 4

No. 3

No. 2

No. 1

spillways

spillways

Craney Island Dredged Material Management Area

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Dredged Material Management Area

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Material Settling State and

Water Removal

Coarser material settles first near the inflow Dredge material settles in a sloping manner as water flows west Clean water is removed by Spillway

Effluent meets all CWA Requirements

East EndWest End

Spillway

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Dredged Material Placement

Inflow Settling

Water RemovalDischarge of Water

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Environmental Monitoring

Water Quality• Contractors are required to inspect effluent water every 4-

hours, or 6-times per day.

• Water quality testing for Total Suspended Solids (TSS) is required 2-times per day.

• Additional testing is required if effluent water appears cloudy.

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney IslandEnvironmental Monitoring

Water Quality Cont’d:• If effluent water at a spillway appears cloudy, contractors are required

to stop the discharge at the spillway by raising weir boards.

• Contractors are required to document each inspection and testing event.

• Monitoring allows for real-time measurements and allows dredging contractors to take immediate action to modify their operations.

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney IslandWildlife

• Renowned as a bird watching spot.• Provides foraging and nesting habitat for more than 270

species.• Balance needs of Port of Hampton Roads while

minimizing impacts on environment.

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney IslandWildlife Management

• In cooperation with the College of William and Mary, the Corps has successfully managed T&E bird species at Craney Island while accomplishing our mission requirements.

• The Corps has consistently balanced the needs of the Port of Hampton Roads while ensuring Craney Island operations have minimal impacts on environmental resources.

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Section 148 of PL 94-587: Sec 148.“Chief of Engineers, shall . . . Extend

the capacity and useful life of dredged material disposal areas such that the need for new dredged material disposal areas is kept to a minimum.”

Craney Island Dredged Material Management Area

Congress

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Dredged Material Management Area

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Dredged Material Management Area

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney IslandMarine Terminal Phase I - 2017

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Craney Island Dredged Material Management Area

Fill Date

•Original Site 1980

•Existing Site 2025

•Strip Drains Inside 10 Years

•Westside Berm 10 Years

•South Cell only 5 Years

•Eastward Expansion 5 Years

Projection of Life Expectancy

BUILDING STRONG®US Army Corps of Engineers – Norfolk District

Future Uses