File:IHNC Lake Borgne Surge Barrier.jpg
Original file (1,021 × 680 pixels, file size: 168 KB, MIME type: image/jpeg)
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DescriptionIHNC Lake Borgne Surge Barrier.jpg |
A surge barrier, similar to a floodwall but much larger, will be constructed near the confluence of the Gulf Intracoastal Waterway (GIWW) and the Mississippi River Gulf Outlet (MRGO), generally running north-south from a point just east of Michoud Canal on the north bank of the GIWW and just south of the existing Bayou Bienvenue flood control structure. Navigation gates will be constructed where the barrier crosses the GIWW and Bayou Bienvenue to reduce the risk of storm surge coming from Lake Borgne and/or the Gulf of Mexico. Another navigation gate is planned for the Seabrook vicinity where the IHNC meets Lake Pontchartrain to block storm surge from entering the IHNC. In April 2008, the Corps awarded a construction contract to Shaw Environmental & Infrastructure for the Lake Borgne Surge Barrier, making this project the largest design-build civil works project in Corps history. It is highly unusual for a civil works project to be designed and constructed simultaneously. The expedited process is necessary, however, given the compressed timeframe to achieve 100-year level of risk reduction in 2011. In October 2008, the New Orleans District Commander signed the Tier 2 portion of the Individual Environmental Report (IER), which investigated alternative alignments and designs within the location range identified by Tier 1 and explained the impacts of these alignments and footprints, construction materials and methods, and other design details. After the completion of the IER, a Notice to Proceed was issued to Shaw. In December 2008, the Corps held a groundbreaking ceremony to mark the start of test pile driving. Construction of the barrier floodwall, which will be 10,000 feet in length, began on May 9, 2009 and crews are working around the clock to meet the 2011 deadline. As of July 27, nearly 50% of the massive 66-inch diameter, 144-foot long spun-cast concrete piles were in place. |
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Date | |||
Source | originally posted to Flickr as IHNC Lake Borgne Surge Barrier | ||
Author | Team New Orleans, US Army Corps of Engineers | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:50, 7 April 2010 | 1,021 × 680 (168 KB) | Flickr upload bot (talk | contribs) | Uploaded from http://flickr.com/photo/37671998@N05/3834196245 using Flickr upload bot |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Image title | A surge barrier, similar to a floodwall but much larger, will be constructed near the confluence of the Gulf Intracoastal Waterway (GIWW) and the Mississippi River Gulf Outlet (MRGO), generally running north-south from a point just east of Michoud Canal on the north bank of the GIWW and just south of the existing Bayou Bienvenue flood control structure. Navigation gates will be constructed where the barrier crosses the GIWW and Bayou Bienvenue to reduce the risk of storm surge coming from Lake Borgne and/or the Gulf of Mexico. Another navigation gate is planned for the Seabrook vicinity where the IHNC meets Lake Pontchartrain to block storm surge from entering the IHNC. In April 2008, the Corps awarded a construction contract to Shaw Environmental & Infrastructure for the Lake Borgne Surge Barrier, making this project the largest design-build civil works project in Corps history. It is highly unusual for a civil works project to be designed and constructed simultaneously. The expedited process is necessary, however, given the compressed timeframe to achieve 100-year level of risk reduction in 2011.
In October 2008, the New Orleans District Commander signed the Tier 2 portion of the Individual Environmental Report (IER), which investigated alternative alignments and designs within the location range identified by Tier 1 and explained the impacts of these alignments and footprints, construction materials and methods, and other design details. After the completion of the IER, a Notice to Proceed was issued to Shaw. In December 2008, the Corps held a groundbreaking ceremony to mark the start of test pile driving. Construction of the barrier floodwall, which will be 10,000 feet in length, began on May 9, 2009 and crews are working around the clock to meet the 2011 deadline. As of July 27, nearly 50% of the massive 66-inch diameter, 144-foot long spun-cast concrete piles were in place. |
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Camera manufacturer | NIKON CORPORATION |
Camera model | NIKON D700 |
Author | U.S. Army Corps of Engineers |
Exposure time | 1/200 sec (0.005) |
F-number | f/18 |
ISO speed rating | 250 |
Date and time of data generation | 12:41, 1 July 2008 |
Lens focal length | 70 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS3 Windows |
File change date and time | 17:36, 17 August 2009 |
Y and C positioning | Co-sited |
Exposure Program | Shutter priority |
Exif version | 2.21 |
Date and time of digitizing | 12:41, 1 July 2008 |
Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Spot |
Light source | Fine weather |
Flash | Flash did not fire |
DateTime subseconds | 50 |
DateTimeOriginal subseconds | 50 |
DateTimeDigitized subseconds | 50 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 70 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |