trchl04-3
Introduction - trchl04-30009
Figure 1. Head of Passes, Mississippi River, Louisiana
Background - trchl04-30011
Dredge Operational Requirements
Dredged Material Discharge/Placement Requirements
Figure 2. General locations of flexible-dustpan demonstration dredging reaches and dredged material placement area, Head of Passes, Mississippi River, Louisiana
Project Description - trchl04-30015
Figure 3. MVN hydrographic survey at HOP, 5 June 2002
Project Equipment
Figure 4. Downstream-bound vessel "crabbing" around HOP
Project Equipment (Cont.)
Project Operations
Figure 5. nitial Beachbuilder anchor deployment configuration
6 June 2002
7 June 2002
9 June 2002
12 June 2002
Data Collection Program
Dredging Prism Data
River Stage Data
Figure 6. Venice Station stage hydrograph (March 1993 July 2001)
Placement Area Data
Dredging Operational Characteristics Analyses
Dredge Maneuvering Characteristics
Passing vessel delays
Passing vessel delays (cont.)
Figure 8. Weeks Marine dredge positioning system (with ranges, CL, and dustpan positions annotated)
Time required to back the dredge down and reposition (reset) for each cut
Table 3. Reset Times and Transit Speeds of Beachbuilder
Results of Associated Branch Pilot survey regarding dustpan use in navigation channel
Dredge Production Characteristics
Table 5. Beachbuilder Advance Rates and Production
Table 5. Beachbuilder Advance Rates and Production (Cont.)
Table 5. Beachbuilder Advance Rates and Production (Cont.)
Average bank height for each advance
Average production rates
Time-series plots of production
Figure 10. Time-series plot of Beachbuilder's production on 13 June 2002
Beneficial Use Analysis
Figure 11. BD survey of placement site elevations (elevation range in feet)
Figure 13. Difference plot between AD and BD (elevation) surveys
Feasibility Analyses
Potential Project Applicability
Comparison to Previous Maintenance Dredging Capabilities Assessment
Dredge mobility in working between dredging assignments
Method and mode of materials placement
Challenging sea conditions
Conclusions and Recommendations - trchl04-30056
Recommendations - trchl04-30057
Recommendations (Cont.) - trchl04-30058
Photo 1. Ships passing abreast at the HOP
Photo 3. Beachbuilder dustpan head
Photo 5. Beachbuilder deck pumps
Photo 7. Stern tug used to maneuver Beachbuilder
Photo 9. Leverman station on Beachbuilder
Photo 11. Discharge pipe connection on Beachbuilder
Photo 13. Anchor barge (skidder) holding floating hose
Photo 15. Swamp buggy in marsh
Photo 17. Tug Delta Pacer
Photo 19. Tug Delta Fox
Photo 21. Large crane barge (Weeks 553)
Photo 23. Tug Marie
Photo 25. Hard point connection with floating hose
Photo 27. FP201 Global Flow Probe (wand not extended )
Photo 28. Current meter being deployed off Beachbuilder's bow gantry
Photo 29. Before dredging aerial photo of placement site
Photo 31. Least tern nest on newly placed dredged material for wetland restoration
Appendix A: Bar Pilot Survey
Dustpan Dredge Demonstration at the Head of Passes (HOP) June 6 13, 2002 Mississippi River Bar Pilot Survey
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree - trchl04-30078
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree - trchl04-30079
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree (cont.)
REPORT DOCUMENTATION PAGE - trchl04-30081
7. (Concluded)
Introduction - trchl04-30009
Figure 1. Head of Passes, Mississippi River, Louisiana
Background - trchl04-30011
Dredge Operational Requirements
Dredged Material Discharge/Placement Requirements
Figure 2. General locations of flexible-dustpan demonstration dredging reaches and dredged material placement area, Head of Passes, Mississippi River, Louisiana
Project Description - trchl04-30015
Figure 3. MVN hydrographic survey at HOP, 5 June 2002
Project Equipment
Figure 4. Downstream-bound vessel "crabbing" around HOP
Project Equipment (Cont.)
Project Operations
Figure 5. nitial Beachbuilder anchor deployment configuration
6 June 2002
7 June 2002
9 June 2002
12 June 2002
Data Collection Program
Dredging Prism Data
River Stage Data
Figure 6. Venice Station stage hydrograph (March 1993 July 2001)
Placement Area Data
Dredging Operational Characteristics Analyses
Dredge Maneuvering Characteristics
Passing vessel delays
Passing vessel delays (cont.)
Figure 8. Weeks Marine dredge positioning system (with ranges, CL, and dustpan positions annotated)
Time required to back the dredge down and reposition (reset) for each cut
Table 3. Reset Times and Transit Speeds of Beachbuilder
Results of Associated Branch Pilot survey regarding dustpan use in navigation channel
Dredge Production Characteristics
Table 5. Beachbuilder Advance Rates and Production
Table 5. Beachbuilder Advance Rates and Production (Cont.)
Table 5. Beachbuilder Advance Rates and Production (Cont.)
Average bank height for each advance
Average production rates
Time-series plots of production
Figure 10. Time-series plot of Beachbuilder's production on 13 June 2002
Beneficial Use Analysis
Figure 11. BD survey of placement site elevations (elevation range in feet)
Figure 13. Difference plot between AD and BD (elevation) surveys
Feasibility Analyses
Potential Project Applicability
Comparison to Previous Maintenance Dredging Capabilities Assessment
Dredge mobility in working between dredging assignments
Method and mode of materials placement
Challenging sea conditions
Conclusions and Recommendations - trchl04-30056
Recommendations - trchl04-30057
Recommendations (Cont.) - trchl04-30058
Photo 1. Ships passing abreast at the HOP
Photo 3. Beachbuilder dustpan head
Photo 5. Beachbuilder deck pumps
Photo 7. Stern tug used to maneuver Beachbuilder
Photo 9. Leverman station on Beachbuilder
Photo 11. Discharge pipe connection on Beachbuilder
Photo 13. Anchor barge (skidder) holding floating hose
Photo 15. Swamp buggy in marsh
Photo 17. Tug Delta Pacer
Photo 19. Tug Delta Fox
Photo 21. Large crane barge (Weeks 553)
Photo 23. Tug Marie
Photo 25. Hard point connection with floating hose
Photo 27. FP201 Global Flow Probe (wand not extended )
Photo 28. Current meter being deployed off Beachbuilder's bow gantry
Photo 29. Before dredging aerial photo of placement site
Photo 31. Least tern nest on newly placed dredged material for wetland restoration
Appendix A: Bar Pilot Survey
Dustpan Dredge Demonstration at the Head of Passes (HOP) June 6 13, 2002 Mississippi River Bar Pilot Survey
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree - trchl04-30078
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree - trchl04-30079
SA=Strongly Agree A=Agree U=Undecided D=Disagree SD=Strongly Disagree (cont.)
REPORT DOCUMENTATION PAGE - trchl04-30081
7. (Concluded)
