Parent Layer: Coastal RSM Plan Recommendations

Name: San Diego Potential Offshore Borrow Areas

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Description: Offshore sediment sources along the entire reach of the San Diego Coastal RSM Plan region were previously identified by SANDAG and used for Regional Beach Sand Projects (RBSP I) in 2001, and a few additional potential borrow sites were identified during development of the San Diego Region Coastal Regional Sediment Management Plan. Ten offshore borrow sites were previously investigated as part of RBSP I.SANDAG investigated many of the offshore potential sand deposits in 2008 as part of RBSP II. They used high resolution, multi-channel seismic technology along the entire region as a first step to identify candidate sites (Fugro 2008). This was followed by vibracoring at specific locations to retrieve, examine, and analyze physical samples (Alpine 2008). These recent sand investigations have yielded preliminary results of sand quality and quantity at the new sites, and at some of the previous sites as well. Sand quality as related to whether the deposits at those locations could be appropriate for beach restoration was assessed as: SM-1 is suitable to good; SO-7 yields no more sand; SO-6 is good to excellent; SO-5 is excellent (the investigation moved farther inshore than the area dredged in 2001); TP-1 is marginal; MB-1 is excellent; ZS-1 is poor; and SS-1 is suitable to good.Locations compiled by Moffatt & Nichol for the San Diego Coastal Regional Sediment Management Plan.

Copyright Text: Moffatt & Nichol, San Diego Association of Governments (SANDAG), California Coastal Sediment Management Workgroup

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• Borrow_Site ( type: esriFieldTypeString, alias: Borrow Site, length: 50 )
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