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Layer: BOEM_ASAP_Proposed_Tracklines (ID: 1)

Name: BOEM_ASAP_Proposed_Tracklines

Display Field: State

Type: Feature Layer

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Description: The Bureau of Ocean Energy Management (BOEM) Marine Minerals Program is responsible for managing energy and mineral resources on the Outer Continental Shelf (OCS), specifically non-energy minerals (primarily sand and gravel) for use in coastal resiliency and storm damage reduction projects, including beach nourishment and coastal restoration. Sand is required for these restoration activities to assist in recovery from acute events like storms such as Hurricane Sandy, as well as chronic erosion from currents, wave activity, tides, and human intervention of natural sediment transport along beaches, coastal communities, and state and Federal lands. Coastal restoration provides shore protection and benefits important habitats and ecosystems, community rebuilding efforts (residential and commercial), and Federal and state economies through tourism and tax revenues. Identifying sand resources is the first step in providing these resources to other agencies that require them for rebuilding projects promoting the long-term sustainability of communities and ecosystems. By identifying OCS sand resources, BOEM is in the unique position to provide resources to multiple federal, state, and local agencies to rebuild parkland, wildlife refuges and habitat, and other areas requiring additional material to stabilize and rebuild land.CB&I was contracted by BOEM on September 10, 2014, to conduct the Inventory of Potential Beach Nourishment and Coastal Restoration Sand Sources on the Atlantic Outer Continent Shelf of the United States project. Following award, CB&I conducted an extensive review of existing internal and external databases (including but not limited to U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), BOEM, United States Army Corps of Engineers (USACE), and various state agencies and academic institutions) to identify areas of potential beach compatible sources of sand in proximity to coastal areas where those resources are likely to be needed. In addition, CB&I’s comprehensive internal database, which was developed based on historic CB&I projects, along with online resources and information gathered from state coordination meetings allowed CB&I to draft reconnaissance geophysical tracklines and geotechnical (geologic) sample locations along the Atlantic OCS. The study area is located from 5.6 kilometers (km) (3 nautical miles) offshore to 14.8 km (eight nautical miles) offshore U.S. coastlines on the Atlantic OCS within water depths of 30 meters (m). OCS sand sources are limited to 30 m (~90 feet [ft]) of water depth due to practical and economical limitations of the current dredging industry, including restrictions of the current dredging fleet that is available to U.S. beach nourishment projects. Areas within Nantucket Sound and Cape Cod Bay are specifically excluded; marine protected areas, such as Stellwagen Bank National Marine Sanctuary and Biscayne Bay National Marine Sanctuary, are outside the footprint of the Study Area or are otherwise excluded.Shapefile contains proposed geophysical survey tracklines for the collection of EdgeTech 6205 interferometric swath bathymetry, EdgeTech 4200 300/600 kHz sidescan sonar, EdgeTech 3200 chirp sub-bottom sonar with 512i towfish, and a Geometrics G882 marine magnetometer on the federal OCS offshore of Maine to Rhode Island.

Definition Expression: N/A

Copyright Text: CB&I

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