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St. Louis District Dredging

St. Louis District Dredging. WEDA – Midwest 2012. Lance Engle Dredging Project Manager St. Louis District. Agenda. Maintenance Dredging District / Mission Floating Plant 2011 / 2012 Dredging Other Marine Work. St. District. Confluence of Missouri and Mississippi Rivers.

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St. Louis District Dredging

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  1. St. Louis District Dredging WEDA – Midwest 2012 Lance Engle Dredging Project Manager St. Louis District

  2. Agenda • Maintenance Dredging • District / Mission • Floating Plant • 2011 / 2012 Dredging • Other Marine Work

  3. St. District Confluence of Missouri and Mississippi Rivers Illinois River Missouri River Mississippi River St. Louis Kaskaskia River SEMO Port

  4. Channel Patrol M/V PATHFINDER Multi Mission: Channel Recon, Survey, Buoy Positioning, Towing & L&D Repair

  5. Survey Boats • 2 - AE Contracts • 4 – Gov.’t < 26-ft

  6. Dredge Potter .

  7. Dredge Potter Flexible Pipeline .

  8. Cutterhead Dredge Contract • 24” Cutterhead with 3000-ft of pipeline. • Season July thru December. • 4th year of 5 year contract.

  9. 2011 Dredge Season - Stats Dredge # Jobs Cubic Yards Dates Potter 31 3.5M 9/4-12/16 America 11 1.3M 7/8-8/24 10/6-10/31 Total 42 4.8M

  10. Dredging 2012 • Low flood risk • Potential for less dredging requirement in Pools. • Lower (Middle Miss) potential for low water & more dredging. • Funding • FY 12 flat for Upper, Lower & ILW; Kaskaskia and SEMO none. • Supplemental Funding for Upper, Lower, Kaskaskia and SEMO.

  11. Future Marine Work • Environmental Dredging Carlyle Lake & Kaskaskia River- IDIQ contract for small cutterhead & mechanical dredging equipment. Closes 4 June. • Lock & Dam 25 - Downstream Main Lock Scour Repairs, Phase II. Closes 11 May. • Lock & Dam 24 – Scour Repair – tbd, 4th Quarter. • O&M & New Dike Contracts- typically issued Jan. • FY13 budget is healthy. • Rock Removal FY14 – Thebes to Commerce

  12. Rock Removal Update Current Status Rock Grinding contract unsuccessful. (Phases 2–4) only removed 20 cu yds out of 6,700 cu yds. Path Forward Evaluated alt. methods (boring, saw cutting, etc.) Concluded that nothing will work except for blasting. Budget request for FY14 (blasting) New AIS data will be used to determine tow tracks. Pinnacles and rock outcrops are shown as obstruction areas in the IENC. Trigger (10-ft Cape Girardeau and falling) Coordinate with USCG and RIAC, issue Navigation Notice. Rock pinnacles will begin effecting 9 ft draft barge traffic at a stage of 8.2 Cape Girardeau.

  13. The End

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