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KEY PROJECT |
Beach Renourishment
Jupiter/Carlin Beach, Palm Beach County, Florida
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Services Rendered
- Layout, planning & acquisition of 32
vibracore sand samples and subsequent analysis
- Composite analyses of borrow area boundaries
to optimize available sand resources
- Optimization of sand fill within initial
project construction footprint
- Inclusion of a dune enhancement feature
to offset recent erosional losses.
- Seismic profiling, side scan sonar and
detailed bathymetric surveys of offshore borrow area
- Contract drawings and technical specifications
- Limited construction phase services
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Project
Summary
ATM was selected in March
1998 to provide professional design/engineering services to the
Palm Beach County Department of Environmental Resources Management
for the renourishment of the 6000 ft long federal project immediately
south of Jupiter Inlet. The initial project restoration was completed
in April 1995, with approximately 600,000 cubic yards of sand excavated
from the ebb tidal shoal of Jupiter Inlet and placed onto the shoreline.
Services performed by ATM for this initial renourishment included
borrow area sediment sample compositing, investigation of an additional
sand resource area, design of the beachfill template, and preparation
of contract documents. Bidding and construction phase services were
also provided. The geotechnical investigation was completed in July
1999 during which detailed bathymetric data was collected concurrent
with seismic and side-scan sonar instrumentation tows. Following
processing of the geophysical data, thirty-two vibracores were collected,
allowing ATM coastal engineers to develop area of influence computations
to determine composite characteristics of the potential borrow areas.
This data was applied in the development of a beachfill template
to optimize sand placement on the project shoreline. Sufficient
sand quantities were identified to support both the Jupiter/Carlin
Renourishment and the Juno Beach Shore Protection Project. The latter
of which was constructed by Palm Beach County in March 2000.
ATM coastal engineers were asked to provide a dune component to
the project plans to offset severe erosion of the existing vegetated
dunes in the project area. Construction contract documents were
completed in June 2001 to support bid solicitation in July 2001.
Project construction was accomplished between December 2001 and
April 2002, during which approximately 56,000 cubic yards of sand
were placed. ATM provided review of contractor pay profile survey
data, computed template volumes, and made recommendations for payment.
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