lost lake marsh creation and hydrologic restoration...
TRANSCRIPT
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Lost Lake Marsh Creation and
Hydrologic Restoration (TE-72)
Russ Joffrion, P.E.
Engineering Division
May 6, 2014
committed to our coast committed to our coast
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• CWPPRA PPL 19
• Create/Restore over 400 acres of intertidal marsh
• Create approximately 30,000 LF of earthen terraces
• Replace 4 fixed crest weirs and 1 earthen plug with
variable crest weirs
• Engineering and Design: November 2012
• Phase 2 Funding: January 2013
• Anticipated Bid Advertisement: Fall 2014
Coastal Protection and Restoration Authority of
Louisiana
PROJECT BACKGROUND
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PROJECT VICINITY MAP
Coastal Protection and Restoration Authority of
Louisiana
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PROJECT LAYOUT
Coastal Protection and Restoration Authority of
Louisiana
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PROJECT LAYOUT
Coastal Protection and Restoration Authority of
Louisiana
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MARSH CREATION FILL AREAS
AND TYPICAL SECTION
Coastal Protection and Restoration Authority of
Louisiana
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MARSH NOURISHMENT FILL
AREA AND TYPICAL SECTION
Coastal Protection and Restoration Authority of
Louisiana
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EARTHEN TERRACE LAYOUT AND
TYPICAL SECTION
Coastal Protection and Restoration Authority of
Louisiana
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VARIABLE CREST WEIR
TYPICAL SECTION
Coastal Protection and Restoration Authority of
Louisiana
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SUMMARY OF ESTIMATED
QUANTITIES • Marsh Fill: 3.3M CY (Cut)
• Marsh Nourishment: 120K CY (Cut)
• Shoreline Restoration: 4,000 LF
• Containment Dikes: 50,700 LF
• Earthen Terraces: 30,000 LF
• 5 Water Control Structures
– Channel Excavation: 1,500 CY
– Treated Timber Piles: 9,000 LF
– Steel Sheet Pile: 17,000 SF
– Rip Rap (55 lb): 1,400 CY
Coastal Protection and Restoration Authority of
Louisiana
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Coastal Protection and Restoration Authority of Louisiana
QUESTIONS