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US Army Corps of Engineers BUILDING STRONG ® Toke Point Marina Pipeline Maintenance Dredging with Flowlane Disposal at Willapa Harbor, Washington Hiram.

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Presentation on theme: "US Army Corps of Engineers BUILDING STRONG ® Toke Point Marina Pipeline Maintenance Dredging with Flowlane Disposal at Willapa Harbor, Washington Hiram."— Presentation transcript:

1 US Army Corps of Engineers BUILDING STRONG ® Toke Point Marina Pipeline Maintenance Dredging with Flowlane Disposal at Willapa Harbor, Washington Hiram Arden Operations Division, Navigation Section Seattle District November 2009

2 BUILDING STRONG ®

3 NAVIGATION PROGRAM Channel & Harbors - 23 active  8 high use harbors (over 1 million tons commercial cargo)  15 low use harbors  15 deep draft channels (14 ft+ depth) Toke Point Marina  7 shallow draft channels  2 without channel maintenance (breakwater & revetment)  Conduct hydrographic surveys  Navigation hazard removal.

4 BUILDING STRONG ® Willapa Harbor Navigation Project Features:  Ocean bar channel  Deep draft river channel to Raymond  Toke Point Marina  Bay Center Channel & Marina  Nahcotta Marina Toke Pt.

5 BUILDING STRONG ® TOKE POINT AT WILLAPA BAY, WASHINGTON Photo Courtesy Port of Willapa Harbor Photo by Merrill Photography

6 BUILDING STRONG ® Aerial view of Toke Point Marina & Entrance

7 BUILDING STRONG ® 2006 Pacific / Wahkiakum Southwest Washington Port Cooperative :  Port of Willapa Harbor  Port of Chinook  Port of Peninsula  Port of Ilwaco  Port of Wahkiakum #1  Port of Wahkiakum #2

8 BUILDING STRONG ® Chronology of Toke Point federal entrance dredging  1958 New Const. 184,000 cy Pipeline w/upland disposal  1964 O&M 12,000 cy Pipeline w/ upland disposal  1970 O&M 16,500 cy Pipeline w/upland disposal  1974 O&M 14,000 cy Pipeline w/upland disposal  1987 O&M 27,800 cy Clamshell w/openwater disposal  1991 O&M 27,100 cy Clamshell w/openwater disposal  1998 O&M 27,650 cy Clamshell w/openwater disposal  2009 O&M 20,000 cy Pipeline with flowlane & beneficial use disposal (Underway & funded by Port of Willapa Harbor)  2012 O&M 15,000 cy  2015 O&M 15,000 cy  2019 O&M 15,000 cy

9 BUILDING STRONG ® Corps & Port Partnership Effort  Corps & Port conduct joint sediment sampling & analysis that confirms sediments suitable for unconfined disposal or beneficial use.  Corps & Port coordinate required permit approvals to conduct O&M dredging for whoever gets funds first?  Stakeholder collaboration nets proposal for pipeline dredging with flowlane & beneficial use disposal.  Corps & Port Strategy “Get Dredge Ready”

10 BUILDING STRONG ®  Corps Federal Entrance Public Notice #CENWS-OD-TS-NS-28  Port of Willapa Harbor Individual Permit Application Public Notice No. NWS-2008- 164-SO JOINT PORT/ CORPS PUBLIC NOTICE August 11, 2008

11 BUILDING STRONG ®  Federal Entrance 100 ft wide, 700 ft long to -17 ft depth @ mllw  Port Moorage area depths vary from -13 ft to -19ft depths @ mllw. August 11, 2008 JOINT PORT / CORPS PUBLIC NOTICE

12 BUILDING STRONG ® Port of Willapa Harbor / Corps JARPA Application August 11, 2008  Flowlane disposal of silty materials in “deep hole “, thalweg.  Beneficial use placement of sandy entrance materials for beach nourishment on Port property.

13 BUILDING STRONG ® Commercial Fishing Vessel Moored at Toke Point

14 BUILDING STRONG ® Commercial fishing vessel moored at Toke Point

15 BUILDING STRONG ® Ellicott Dredges Model 370 Cutterhead 10-inch pipeline dredge delivered to Port of Willapa dock in Raymond, WA September 2009

16 BUILDING STRONG ® Port of Willapa Harbor’ dredge at work Dredge Window 1 October - 31 March

17 BUILDING STRONG ® Float marking 12-inch HDPE Discharge Line

18 BUILDING STRONG ® Commercial Fishing Vessel Moored at Toke Point Dredge discharge diffuser float for flowlane disposal

19 BUILDING STRONG ® Tokeland Dredging Celebration October 16, 2009

20 BUILDING STRONG ® Commercial Fishing Vessel Moored at Toke Point Flowlane Disposal ‘‘Deep Hole” bathymetric survey 28 Oct 2009

21 BUILDING STRONG ® Questions?


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