Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/36053
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dc.contributor.authorUnited States. Army. Corps of Engineers. New Orleans District-
dc.date.accessioned2020-04-07T16:11:00Z-
dc.date.available2020-04-07T16:11:00Z-
dc.date.issued2010-11-
dc.identifier.urihttps://hdl.handle.net/11681/36053-
dc.descriptionIndividual Environmental Report Supplemental-
dc.description.abstractThe United States Army Corps of Engineers-Mississippi Valley Division, New Orleans District has prepared this Individual Environmental Report Supplemental (IERS) #11.b – Tier 2 Borgne – Improved Protection on the Inner Harbor Navigation Canal (IHNC), Orleans and St. Bernard Parishes, Louisiana, referred to as IERS #11.b – Tier 2 Borgne – IHNC in the remainder of this report. This IERS has been prepared to evaluate the potential impacts associated with restoring and reinforcing approximately 4.6 miles (mi) of noncontiguous IHNC and Gulf Intracoastal Waterway (GIWW) levees and floodwalls in Orleans Parish, Louisiana. This document is the second supplement to Individual Environmental Report #11 (IER #11) – Tier 2 Borgne - Improved Protection on the Inner Harbor Navigation Canal, Orleans and St. Bernard Parishes, Louisiana, and evaluates strengthening secondary flood risk reduction structures against water that could potentially enter the GIWW and IHNC from overtopping of the primary risk reduction system, and internal rainfall. Evaluation of deficient segments of the IHNC Hurricane Storm Damage Risk Reduction System were divided into three reaches (Reach 1, 2, and 3) based on the sub-basins that are protected by the existing flood risk reduction system.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers.en_US
dc.description.tableofcontents1.0 INTRODUCTION..............................................................................................................1 1.1 PURPOSE AND NEED FOR THE PROPOSED ACTION ..............................2 1.2 AUTHORITY FOR THE PROPOSED ACTION ..............................................2 1.3 PRIOR REPORTS .................................................................................................2 1.4 PUBLIC CONCERNS ...........................................................................................4 2.0 PROPOSED ACTION AND ALTERNATIVES .............................................................5 2.1 DESCRIPTION OF THE PROPOSED ACTION ..............................................5 2.1.1 Description of Restoration/Reinforcement Methods ...................................8 2.1.2 Proposed Restoration/Reinforcement Methods by Reach .........................11 2.1.3 Construction-Related Information for the Proposed Action ......................14 2.2 ALTERNATIVES TO THE PROPOSED ACTION ........................................18 2.2.1 No Action Alternative ................................................................................18 2.3 ALTERNATIVES ELIMINATED FROM FURTHER CONSIDERATION .............................................................................................18 2.3.1 Non-Structural Alternatives .......................................................................18 3.0 AFFECTED ENVIRONMENT AND ENVIRONMENTAL CONSEQUENCES .....20 3.1 ENVIRONMENTAL SETTING ........................................................................20 3.2 SIGNIFICANT RESOURCES ...........................................................................25 3.2.1 Water and Coastal Resources .....................................................................25 3.2.2 Upland Resources ......................................................................................28 3.2.3 Wildlife ......................................................................................................32 3.2.4 Threatened and Endangered Species .........................................................36 3.2.5 Cultural Resources .....................................................................................39 3.2.6 Recreational Resources ..............................................................................43 3.2.7 Aesthetics ...................................................................................................52 3.2.8 Noise ..........................................................................................................60 3.2.9 Air Quality .................................................................................................64 3.2.10 Transportation ............................................................................................69 3.2.10.1 Navigational Resources .............................................................69 3.2.10.2 Airports .....................................................................................69 3.2.10.3 Railroads ...................................................................................69 3.2.10.4 Surface Roads ...........................................................................70 3.3 SOCIOECONOMICS..........................................................................................73 3.3.1 Displacement of Population and Housing ..................................................84 3.3.2 Impacts to Employment, Business, and Industry .......................................85 3.3.3 Availability of Public Facilities and Services ............................................86 3.3.4 Effects on Transportation ...........................................................................87 3.3.5 Disruption of Community and Regional Growth .......................................88 3.3.6 Impacts to Tax Revenues and Property Values .........................................89 3.3.7 Changes in Community Cohesion .............................................................90 3.4 ENVIRONMENTAL JUSTICE .........................................................................91 3.5 HAZARDOUS, TOXIC, AND RADIOACTIVE WASTE ...............................93 4.0 CUMULATIVE IMPACTS ............................................................................................95 4.1 METHODOLOGY ..............................................................................................95 4.2 DESCRIPTION OF PROJECTS CONSIDERED ............................................96 4.3 CEMVN HSDRRS IERs......................................................................................99 5.0 SELECTION RATIONALE .........................................................................................107 6.0 COORDINATION AND CONSULTATION ..............................................................107 7.0 MITIGATION ................................................................................................................108 8.0 COMPLIANCE WITH ENVIRONMENTAL LAWS AND REGULATIONS .......108 9.0 CONCLUSION ..............................................................................................................109 10.0 PREPARED BY .............................................................................................................110 11.0 LITERATURE CITED .................................................................................................111-
dc.format.extent276 pages / 27.64 MB-
dc.format.mediumPDF-
dc.language.isoen_USen_US
dc.publisherUnited States. Army. Corps of Engineers. New Orleans District.en_US
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectPontchartrain, Lake (La.)en_US
dc.subjectFlood controlen_US
dc.subjectHurricanesen_US
dc.subjectEnvironmental managementen_US
dc.subjectInner Harbor Navigation Canal (La.)en_US
dc.titleFinal Individual Environmental Report Supplemental, Improved Protection on the Inner Harbor Navigation Canal, Orleans and St. Bernard Parishes, IERS #11.b - Tier 2 Borgne - INHCen_US
dc.typeReporten_US
Appears in Collections:Environmental Documents

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