prepared for: prepared by: masonville dmcf: integrating dredged material management with...
TRANSCRIPT
Prepared for: Prepared by:
Masonville DMCF: Integrating Dredged Material Management with
Environmental Restoration and Recreation Opportunities
October 2012
Jim Hulbert, Kaitlin McCormick, and Peggy Derrick
2Masonville DMCF Background• Masonville Dredged Material Containment Facility (DMCF)
Components: Maryland Port Administration (MPA) placement facility for
dredged material from Baltimore Harbor DMCF footprint is 141 ac, including 130 ac of open water
• 16 mcy capacity• ~20 year site life
• Mitigation Requirements: Offset fill of 130 ac of open
water Offset loss of 1 ac of
vegetated wetland Offset 10 ac of impacts to Chesapeake Bay Critical Area
3Compensatory Mitigation Package• Non-tidal and tidal wetlands creation and enhancement
• Reef and fish habitat improvement
• Eel passage installation
• Shad and herring restoration
• Trash interceptor installation
• Stream restoration
• Uplands clean-up and remediation
• Terrestrial habitat enhancement and diversification
• Conservation easement
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Environmental Restoration
Community Enhancements
• Coordinated directly with citizen groups and non-profit entities
• Project Components Environmental Education Center Education and Research Allocation ADA Water Accessibility (fishing pier and docking pier) Walking Trails Outdoor Education Facilities
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c on c er n e d c i t i z en s f o r a
B E T T E R B R O O K L Y N
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Upland Clean-up
• Uplands Contamination Legacy Dumping – telephone poles, railroad ties, tires,
concrete and rubble Historic Fast Land – created by placing municipal waste and
other contaminated debris in open water
• Environmental Impacts Remnant Debris – required characterization and
removal/disposal Soil Impacts – metals (arsenic, lead, mercury, chromium),
PAHs (benzo-a-pyrene) – required characterization and remedial action
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Upland Debris Clean up
• Debris Removal 6,280 tons telephone pole
and railroad ties 700 tons concrete debris 146 tons scrap metal 31 tons of tires 7,466 tons misc. debris
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Upland Remediation
• Remedial techniques include installing soil cap to eliminate contact with impacted surface soils:
Site characterization and risk assessment to determine remedial action (30 acres require capping)
Design of cap:• Typical two foot clean soil cap • Tree preservations zones• Shoreline stabilization• Non-tidal wetlands creation
9Proposed Areas of Remedial Action
10Proposed Improvements
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Community Enhancements
• Education Center and programming: National Aquarium Living Classrooms BayBrook
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Nature Area Improvements
Designed for ADA water access, passive recreation and educational opportunities: Fishing pier and
docking pier 3,000 feet of
walking trails Wetland
creation Stream
restoration Outdoor
education areas
13Shoreline Stabilization
14Public Access Piers
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Happy Ending
Kaitlin McCormickScientist/Project Manager225 Schilling Circle, Suite 400Hunt Valley, Maryland [email protected]
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Jim HulbertSenior [email protected]
Masonville Cove Nature Area – Grand Opening for Public Water Access October 24, 2012