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https://hdl.handle.net/11681/35416Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | United States. Army. Corps of Engineers. New Orleans District. | - |
| dc.date.accessioned | 2020-02-04T20:14:33Z | - |
| dc.date.available | 2020-02-04T20:14:33Z | - |
| dc.date.issued | 2018-07 | - |
| dc.identifier.uri | https://hdl.handle.net/11681/35416 | - |
| dc.description | Environmental Assessment / Finding of No Significant Impact | - |
| dc.description.abstract | The Federal navigation project known as the "Lake Charles Deep Water Channel and Calcasieu River and Pass, Louisiana" that was authorized by the River and Harbor Act of 1946 (hereinafter referred to as the "Calcasieu River Ship Channel"), provides for a channel 35 feet deep and 250 feet wide from the wharves of the Lake Charles Harbor and Terminal District (including the Loop around Clooney Island) to the Gulf of Mexico, via Calcasieu Lake and through Calcasieu Pass, a Channel 35 to 37 feet deep and 250 feet wide between the jetties, and an approach channel 37 feet deep and 400 feet wide seaward to the 37 foot depth in the Gulf of Mexico. The Recommended Plan for the Calcasieu Sabine Project proposes to use dredged material removed during routine operation and maintenance dredging of the lower portion of the CSC for the creation and restoration of marsh habitat at specific sites within the Sabine National Wildlife Refuge in Cameron Parish, Louisiana. The CSC, a 68-mile long deep draft Federal navigation channel, is located in southwest coastal Louisiana. The northern boundary of the CSC is located at CSC Mile 36.0, just south of Interstate 10 in Lake Charles, Louisiana; the southern boundary extends to CSC Mile (-32.0) in the Gulf of Mexico. Alternative plans for individual Program projects are developed with the level of detail necessary to select a justified, acceptable, and implementable plan that is consistent with applicable law and policy and meets the goals and objectives of the Calcasieu Sabine Project. Benefit and cost, risk and uncertainty, cost effectiveness, and incremental cost analyses are undertaken using procedures that are most appropriate for the scope and complexity of this project. Opportunities to avoid or minimize adverse environmental impacts, and to mitigate for those impacts that cannot reasonably be avoided, are considered in formulation of the proposed action. Appropriate National Ecosystem Restoration benefits were used and appropriate environmental considerations were taken into account by the Project Delivery Team in formulating the proposed action. The objective of ecosystem restoration is to restore degraded ecosystem structure, function, and dynamic processes to a less degraded, more natural condition. However, partial restoration may also be possible, with significant and valuable improvements made to degraded ecological resources. The needs for improving or re-establishing both the structural components and the functions of the natural area should be examined. Under the Program, this objective is met by restoring (or partially restoring) degraded distributary ridges, marsh habitat, or both if possible, of coastal Louisiana through beneficial use of material dredged from federal navigation channels to restore or preserve critical geomorphic features and stall future land loss. After this Final Integrated DIR/EA is approved, the Department of the Army and the non-Federal Sponsor will execute a Project Partnership Agreement to implement the Recommended Plan. | en_US |
| dc.description.tableofcontents | Table of Contents ........................................................................................................................................................................... iii Introduction ........................................................................................................................................................................... 7 Project Authority .............................................................................................................................................................. 10 Non-Federal Sponsor ....................................................................................................................................................... 12 Design and Implementation Report Scope ....................................................................................................................... 13 Calcasieu Ship Channel as a Dredged Material Source ................................................................................................... 13 LCA BUDMAT Program Planning Area ............................................................................................................................ 14 The Calcasieu Sabine Study Area ......................................................................................................................... 14 Prior Beneficial Use of Dredged Material Studies and Projects ........................................................................................ 16 Affected Environment (NEPA Required) ............................................................................................................................ 18 Description of the Calcasieu -Sabine Study Area and Project Area .................................................................................. 18 Description of the Watershed ........................................................................................................................................... 20 Sea Level Change ................................................................................................................................................. 21 Climate .................................................................................................................................................................. 22 Geology ................................................................................................................................................................. 23 Relevant Resources ......................................................................................................................................................... 24 Relevant Resources Not Evaluated ....................................................................................................................... 28 Relevant Resources Evaluated ............................................................................................................................. 28 Future without Project Conditions .................................................................................................................................... 36 Plan Formulation ................................................................................................................................................................. 40 LCA BUDMAT Program Planning Problems, Needs, and Opportunities ........................................................................... 40 Program Planning Problems .................................................................................................................................. 40 Program Planning Needs ...................................................................................................................................... 40 Program Planning Opportunities ............................................................................................................................ 41 LCA BUDMAT Program Planning Goals, Objectives, and Constraints.............................................................................. 42 Program Planning Goal ......................................................................................................................................... 42 Program Planning Objectives ................................................................................................................................ 42 Program Planning Constraints ............................................................................................................................... 43 Project Specific Planning Problems, Needs, and Opportunities ........................................................................................ 43 Project Specific Planning Problems ....................................................................................................................... 43 Project Specific Planning Needs ............................................................................................................................ 43 Project Specific Planning Opportunities ................................................................................................................. 44 Project Specific Planning Goals, Objectives, and Constraints .......................................................................................... 44 Project Specific Planning Goal .............................................................................................................................. 44 Project Specific Planning Objectives ..................................................................................................................... 44 Project Specific Planning Constraints .................................................................................................................... 45 Formulation of Alternative Plans ...................................................................................................................................... 45 Identifying Management Measures ........................................................................................................................ 45 Screening of Management Measures .................................................................................................................... 50 Initial Array of Alternatives ............................................................................................................................................... 51 Planning Considerations in Selection of Marsh Restoration Sites .......................................................................... 56 Screening Criteria.................................................................................................................................................. 56 Initial Screening of Alternatives ............................................................................................................................. 56 Final Array of Alternatives ................................................................................................................................................ 57 Comparison of Final Array Alternatives ............................................................................................................................ 57 Wetland Value Assessment ................................................................................................................................... 57 Cost Effective and Incremental Cost Analyses ...................................................................................................... 59 Selection of the RP .......................................................................................................................................................... 62 Summary of Accounts and Comparison of Alternatives ......................................................................................... 62 Acceptability, Completeness, Effectiveness, and Efficiency ................................................................................... 63 Description of the RP (Alternative 1) ................................................................................................................................ 64 Implementation of the RP (Alternative 1) ........................................................................................................................... 73 Significance of the RP ...................................................................................................................................................... 73 Cost of the RP ................................................................................................................................................................. 73 Benefits of the RP ............................................................................................................................................................ 75 Environmental Consequences ........................................................................................................................................... 77 Navigation ........................................................................................................................................................................ 77 Wetlands.......................................................................................................................................................................... 77 Aquatic Resources /Fisheries........................................................................................................................................... 78 Essential Fish Habitat ...................................................................................................................................................... 79 Wildlife ............................................................................................................................................................................. 80 Threatened and Endangered Species .............................................................................................................................. 82 Species of Management Concern/Other Protected Species ............................................................................................. 83 Water and Sediment Quality ............................................................................................................................................ 84 Air Quality ........................................................................................................................................................................ 85 Cultural Resources .......................................................................................................................................................... 85 Recreational Resources ................................................................................................................................................... 86 Hazardous, Toxic, and Radioactive Waste ....................................................................................................................... 87 Cumulative Impacts ......................................................................................................................................................... 88 Other Considerations .......................................................................................................................................................... 91 Adaptive Management ..................................................................................................................................................... 91 Monitoring ............................................................................................................................................................. 91 Adaptive Management Evaluation Summary ......................................................................................................... 92 Real Estate ...................................................................................................................................................................... 94 Relocations ...................................................................................................................................................................... 94 Risk and Uncertainty ........................................................................................................................................................ 94 Geotechnical Analysis ........................................................................................................................................... 96 Availability of Dredged Material ............................................................................................................................. 96 Value Engineering ........................................................................................................................................................... 96 Coordination ........................................................................................................................................................................ 99 Mitigation ........................................................................................................................................................................... 100 Compliance with Environmental Laws and Regulations ................................................................................................ 100 Description of the Non-Federal Sponsor’s Project Implementation Requirements, Roles and Responsibilities. ...... 108 Conclusion ....................................................................................................................................................................... 114 Recommendation .............................................................................................................................................................. 114 Preparers ........................................................................................................................................................................... 117 Literature Cited .................................................................................................................................................................. 119 APPENDICES ............................................................................................................................................................................... 124 Appendix A. Legislation, Reports, and Guidance ..................................................................................................................... 125 Appendix B. Environmental ....................................................................................................................................................... 126 Appendix C. NFS Letter of Intent and Statement of Financial Capability ................................................................................ 127 Appendix D. Relocations Summary ........................................................................................................................................... 128 Appendix E. Cost Certification and Total Project Cost Summary ........................................................................................... 129 Appendix F. Final US Fish and Wildlife Coordination Report .................................................................................................. 130 Appendix G. Real Estate Plan .................................................................................................................................................... 131 Appendix H. DQC & ATR Certification ....................................................................................................................................... 132 Appendix I. Value Engineering Study ........................................................................................................................................ 133 | - |
| dc.format.extent | 496 pages / 11.98 Mb | - |
| dc.format.medium | PDF/A | - |
| dc.language.iso | en_US | en_US |
| dc.publisher | United States. Army. Corps of Engineers. New Orleans District. | en_US |
| dc.rights | Approved for Public Release; Distribution is Unlimited | - |
| dc.source | This Digital Resource was created in Microsoft Word | - |
| dc.subject | Dredging | en_US |
| dc.subject | Dredging spoil | en_US |
| dc.subject | Environmental management | en_US |
| dc.subject | Inland navigation | en_US |
| dc.subject | Cameron Parish (La.) | en_US |
| dc.title | Final Integrated Design and Implementation Report and Environmental Assessment #559 : Louisiana Coastal Area Beneficial Use of Dredged Material Program, Calcasieu Sabine Project, Cameron Parish, Louisiana | en_US |
| dc.type | Report | en_US |
| Appears in Collections: | Environmental Documents | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| EA 559 Calcasieu Sabine Project_2018.pdf | 12.28 MB | Adobe PDF |  View/Open |