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In new applications, the system may be installed at the time of the
construction of the wall. The location of the Blue Marlin Filter
System may be chosen by the designer of the wall to best serve the
purpose of relieving the hydrostatic and hydrodynamic pressures on
the wall. This relief is important in that the design of most wall
systems does not anticipate that the wall will be subject to pressures
from perched or trapped water behind the wall in the backfill
material.

The Blue Marlin Filter System is unique in its design to prevent
erosion of backfill materials caused by transport of the fill material
fines through the wall’s weep holes and/or panel seams. The
hydrodynamic pressure of perched water and seepage water
causes loss of landfill without the proper erosion control system.
The Blue Marlin Filter System relieves this pressure and has an
unlimited design life. Blue Marlin’s filter is also designed for both
new and existing seawalls, retaining walls and bulkhead walls.