State Dredging Study Update NCBIWA Annual Meeting

Transcription

1 State Dredging Study Update NCBIWA Annual Meeting November 13, 2017

2 Study Purpose Three (3) Studies Requested Use of Dredge Manteo for Additional Work Acquisition of Dedicated Dredging Capacity Cost/Benefit of State vs. Private Industry Originally, Three Studies with Three Separate Due Dates (December 1 April 1) Currently, Combine All Three Into One Study (with Standalone Portions) Due April 1 NCBIWA November 13,

3 Approximate the Annual Cost to the State to Operate & Maintain the Dredge Manteo Current Dredging Equipment Includes 14 Dredge, Barges, Tugs, and 10,000 of 12 Pipeline Other Use NCDOT Equipment Charged As Rental Study Purpose Provide a Plan to Allow Use of the Dredge Manteo By Other State Departments/Agencies to Increase the Cost Effectiveness of the Dredge and Assist With Other Navigational Needs Within the State NCBIWA November 13,

4 Equipment NCBIWA November 13,

5 Equipment NCBIWA November 13,

6 Documentation of Existing Workload and Costs 8 Ferry Routes (7 Normal Routes & 1 Emergency Route) Knotts Island - Currituck Swan Quarter Ocracoke Ocracoke Cedar Island Hatteras Southdock 14 Facility Basins Knotts Island Currituck Swan Quarter Cape Hatteras Southdock Ocracoke Bayview Bayview Aurora Minnesott Beach Cherry Branch Southport Fort Fisher Stumpy Point Rodanthe (Emergency Route) Aurora Minnesott Beach Cherry Branch Cedar Island Southport Fort Fisher Manns Harbor (Maintenance Yard) NCBIWA November 13,

7 Documentation of Existing Workload and Costs NCBIWA November 13,

8 Documentation of Existing Workload and Costs 1-Year of Operational Data Available from Dredge Manteo FY16-17 NCBIWA November 13,

9 NC Ferry Division Provided Projected Project Cost to FY2036 Based on Average Annual Costs ($650,000), Manteo Expected to Dredge on Average: ~ 138 Days / Year ~ 71,350 CY/ Year Documentation of Future Workload and Costs Maximum Expectancy: $1,175,000 Annual Cost 249 Project Days 128,733 CY Minimum Expectancy: $200,000 Annual Cost 43 Project Days 22,231 CY NCBIWA November 13,

10 Documentation of Existing Workload and Costs 1-Year of Operational Data Available from Dredge Manteo FY16-17 Using NCDOT Data NCBIWA November 13,

11 Comparison of Current vs Proposed Dredging Methods CEDEP Calibration Required ~65% Downtime to Match Significant Issues with Placement Sites NCBIWA November 13,

12 Comparison of Current vs Proposed Dredging Methods CEDEP Projections Keep Existing Downtime NCBIWA November 13,

13 Comparison of Current vs Proposed Dredging Methods CEDEP Projections Drop Downtime By ~30% to Match Other Recent Projects * Projections Will Be Revised As Additional Data Comes In Production Will Go Down/Costs Will Go Up NCBIWA November 13,

14 Comparison of Current vs Proposed Dredging Methods CEDEP Projections Drop Downtime By ~30% to Match Other Recent Projects & Change Pipe Diam. * Projections Will Be Revised As Additional Data Comes In Production Will Go Down/Costs Will Go Up NCBIWA November 13,

15 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Additional State Agencies NCDMF, NCDCM, NCWRC All Contacted NCWRC Is Only Group With Potential Need Still Awaiting Quantities to Be Provided Likely Very Small Projects With Occasional Need NCBIWA November 13,

16 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Other Navigational Needs Within State Current Shallow Draft Dredging Split Into Three (3) Categories Shallow Draft Inlets (Beach Compatible) AIWW Crossings (Beach Compatible) Remainder of AIWW and Inland Channels (Non-beach Compatible Material) NCBIWA November 13,

17 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Shallow Draft Inlets (Beach Compatible) NCBIWA November 13,

18 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet AIWW Crossings (Beach Compatible) NCBIWA November 13,

19 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Remainder of AIWW & Inland Channels (Non-beach Compatible) NCBIWA November 13,

20 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Overall Summary to Date Shallow Draft Inlets Need Is Mcy/yr AIWW Crossings Need Is 300k 400k cy/yr Remainder of AIWW and Inland Channels Is Mcy/yr It Would Appear That a Portion of the AIWW Crossings May Be the Best Fit For Additional Manteo Work During Dredge Window NCBIWA November 13,

21 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Overall Summary to Date Shallow Draft Inlets Need Is Mcy/yr AIWW Crossings Need Is 300k 400k cy/yr Remainder of AIWW and Inland Channels Is Mcy/yr Another 1 2 Dredges Similar to Manteo Could Likely Handle Remainder of AIWW and Inland Channels Need NCBIWA November 13,

22 Preliminary Estimates of Work Available to Dredge Manteo & Additional Fleet Overall Summary to Date Shallow Draft Inlets Need Is Mcy/yr AIWW Crossings Need Is 300k 400k cy/yr Remainder of AIWW and Inland Channels Is Mcy/yr Shallow Draft Inlets (Including Oregon Inlet) Will Likely Require Much Larger Pipelines and # Required Dependent on Current Dredge Windows (2 4 Dredges Needed VERY PRELIMINARY) NCBIWA November 13,

23 Estimate of Private Contractors to Complete Work By Dredge Manteo USACE Dredges Sidecaster/Special Purpose NCBIWA November 13,

24 Estimate of Private Contractors to Complete Work By Dredge Manteo Private Contractors NC Small Pipeline with Placement NCBIWA November 13,

25 Estimate of Private Contractors to Complete Work By Dredge Manteo Small Regional USACE Private Contractor Projects (Pipeline) NCBIWA November 13,

26 Due Date for All Reports Shifted to April 1, 2018 Strategy for Reporting Change in Legislation & Plan Forward Three (3) Studies Will Have Separate Stand-alone Sections (Chapter Sections or Appendices) Combine All Three Studies Into One (1) Report Submitted to Both Committees With the Following: Literature Search of Government-Owned Dredges & Documentation of These & Dredge Manteo Costs (Initial and O&M Costs) Documentation of Current and Future Ferry, State and Other Dredging Needs NCBIWA November 13,

27 Reporting Strategy (cont d) Change in Legislation & Plan Forward Determination of Additional Work that Dredge Manteo Can Complete (Under Current & Full-Use Scenarios) and Additional Fleet Needed to Make Up the Difference (Include Initial and O&M Costs) Determine Potential Funding Sources for State Fleet and Partnership Options Thru Shared Ownership Agreements Determine Costs for Private Dredge Industry to Complete the Work Above & Investigate Contracting Options to Reduce Time & Costs (Multi-Project/Multi- Year) NCBIWA November 13,

28 Reporting Strategy (cont d) Complete Cost/Benefit Analysis of State-Owned vs. Private Industry Develop Draft/Final Reports Change in Legislation & Single Report Will Allow for Efficient Review and Eliminate Need to Reference Separate Reports Single Succinct Executive Summary and All Encompassing Report and Presentation Plan Forward NCBIWA November 13,

29 Other Thoughts That Have Come to Light Expansion of Environmental Windows? End of April? Given the Limiting Factor of Placement Areas for Non-Beach Compatible Placement, Can the Work Crews Use Outside Environmental Window Times to Improve Dredge Placement Areas? Should the State Develop a Dredge Material Management Plan to Permit These Improvements? NCBIWA November 13,