US Army Corps of EngineersBUILDING STRONG®

St. Louis District Dredging

Lance EngleDredging Project Manager

St. Louis District

WEDA – Midwest 2012

Agenda

• Maintenance Dredging– District / Mission– Floating Plant– 2011 / 2012 Dredging– Other Marine Work

St. District

Illinois River

Missouri River

Mississippi

River

St. Louis

Confluence of Missouri and Mississippi Rivers

Kask

askia

Riv

er

SEMO Port

4

Channel Patrol

M/V PATHFINDER

Multi Mission: Channel Recon, Survey, Buoy Positioning, Towing & L&D Repair

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Survey Boats

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

6

Dredge Potter

.32 Inch diesel-electric dustpan dredge. 2011 New Texas Deck, Pump, ICMS

800 feet of fixed discharge pipeline, 2400 feet of floating pipeline.

Season July thru December.

7

Dredge Potter Flexible Pipeline

.

Cutterhead Dredge Contract

8

• 24” Cutterhead with 3000-ft of pipeline.

• Season July thru December.

• 4th year of 5 year contract.

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2011 Dredge Season - Stats

Dredge # Jobs Cubic Yards DatesPotter 31 3.5M 9/4-12/16America 11 1.3M 7/8-8/24

10/6-10/31Total 42 4.8M

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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.

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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

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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.

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The End