Investor Presentaiton
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Reuse of Dredge Material to Make Lightweight Aggregate
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Addressing Maritime and Infrastructure Industry
An idea for the ports and infrastructure sectors of Puerto Rico is to organize resources to create an affordable and environmentally acceptable way for ports to
manage dredged sediments (especially silty clay material)
An added benefit to this process would be to produce a reliable source of high-quality, lightweight aggregate (LWA) to support the infrastructure needs of the
Island
Driving investment for this process in Puerto Rico would enable transshipment opportunities in the Caribbean region, creating a lightweight, readily
transportable, and cost-effective option for general building material and post-tropical storm rebuilding
The sediment reuse approach:
Install a hydraulic dredge or mechanical excavator in the existing dredged material storage facility
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Pump or convey the extracted sediment to the LWA reuse manufacturing plant, either stationary or on a mobile platform
Produce LWA using a rotary kiln
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Sell the ASTM (American Society for Testing and Materials)-grade LWA to local or regional users
LWA reuse has defined economics, eliminates risk of finding more sites, creates family wage jobs, and preserves land for higher value uses
Leveraging Puerto Rico's Strength
The Island's existing infrastructure makes Puerto Rico a natural choice for
the reuse of dredging material for LWA
Ports on Island (such as Ponce) have plenty of capacity to
accommodate the process
Dredging has been well-needed on the Island around existing port
infrastructure for some time; this process would bring in a private
operator to dredge the harbors, and in the process, use the dredged
material to serve other Island needs
Puerto Rico is geographically well-placed to service the rest of the
Caribbean with this material
There is a need on the Island for ready, quickly-made, cost-effective
lightweight building material
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Especially when rebuilding from Island storms becomes necessary
SEABURY
MARITIME
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Moving Ahead Requires...
Studying the demand for dredging operations and associated demand for
lightweight aggregate building material on Island and in the overall
Caribbean region
Speaking with port operators and port authority personnel who would be
able to accommodate the process of dredging on the Islands ports, and
determine the best available site
Exploring the possibility of reusing the dredging material by selling the
LWA to construction and other infrastructure firms on Island
Where is the appropriate site?
Who would the end users be?
Will there be demand in the Caribbean market beyond Puerto Rico,
opening up the opportunity for transshipment
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