REPSA Dredging Work Plan Introduction REPSA proposes this plan

REPSA Dredging Work Plan
Introduction
REPSA proposes this plan to alleviate the flooding problem that now plagues the city of Port Au
Prince, Haiti. This flooding stems from blocked drainage courses caused by debris accumulation
due to the earthquake in 2010, the daily discharge of refuse into the city’s drainage canals, and
the normal sedimentation loading that takes place in any drainage system. Our operation will
concentrate on offshore drainage basins and the canals that feed into them. These areas are
currently choked with sediment accumulated over many years.
Dredge Plan Overview
We propose to dredge eight (8) centerlines corresponding to the eight major drainage canals
exiting from the city of Port Au Prince with our 16” suction cutter head dredge. These canals
and the basins they empty into are numbered and located as seen on the Dredge Area Location
Maps attached to this Work Plan.
Oversight
We acknowledge that project oversight is very important and we will work to achieve a
successful relationship between our company and the Government of Haiti. We propose to
accomplish this by employing technology to the highest degree. Also, it is our intent to have
our Project Manager work closely with the Haitian Government Representative to minimize
problems and maximize transparency. This relationship will focus its combined efforts to
deliver a successful project, keeping in mind that the goal is to remove as much material as is
practical in order to alleviate the current flooding problems.
Computer Guided Dredging
General dredging work will proceed in a similar manner for each dredge area. Our large cutter
suction dredge is equipped with the latest GPS-enabled dredging software. This software
allows our operators to stay in-cut and keep an accurate log of areas dredged and depth
achieved. The GPS-based software calculates the dredge head location to sub-meter accuracy.
The dredge operator guides the dredge head via an in-cab computer screen that shows the
exact position of the dredge head in real time. This enables the operator to know exactly
where he is in the cut, as well as where he has and has not dredged. As dredge cuts are
completed, depth and volume reports will be given to our Government Representative for final
sign-off. Once a cut is signed off on, we will move on to the next.
Data Logging
We intend to keep a daily dredging log of all of our activities. This log will include estimated
cubic meters of material dredged, dredge cut position start and stop stations, type of material
encountered, mechanical issues, if any and general observations by the captain. This daily
dredging log will be available for review, as required. We will work to provide as much
transparency as necessary in our daily operations.
Major Equipment
Dredge
Our cutter suction dredge is a state of the art machine that was built in 2012. Please see
attached Dredge Survey for complete, detailed information on our dredge.
Support Vessels
We will employ support vessels as necessary to complete this dredging project. Our vessels will
be utilized in several different ways. They will act as transportation for crews to and from the
dredge, as well as assist in moving the dredge from cut to cut. Another important duty
assigned to our tender vessels will be tending to the HDPE (High Density Polyethylene) dredge
discharge pipe. Necessary materials and supplies will be ferried from the mainland to our
floating plants as well.
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Pipe Fusion Machine
We utilize a large HDPE pipe fusion machine that will be employed to weld the plastic dredge
pipe together as needed. Pipe fusion enables a watertight union and eliminates the chance for
leaks.
HDPE Dredge Discharge Pipe
We own and utilize several thousand feet of HDPE pipeline that will enable us to discharge
dredge sediment to the designated offshore deposition sites. The dredge pipeline will be
marked in order to avoid any navigational hazards, or issues, with other vessels in the area.