EQUIVALENT OPENING SIZE - E.Q.S. - The number of a U.S. standard sieve 

 having openings closest in size to the diameter of uniform particles 

 which will have 95 percent by weight retained by the fabric when shaken 

 in a prescribed manner. 



EROSION - The wearing away of land by the action of natural forces. On a 

 beach, the carrying away of beach material by wave action, tidal currents, 

 littoral currents, or by deflation. 



ESTUARY - (1) The part of a river that is affected by tides. (2) The 

 region near a river mouth in which the freshwater of the river mixes 

 with the saltwater of the sea. 



FAUNA - Animal life as opposed to flora (plant life).. Generally the entire 

 group of animals found in an area. 



FIBRILLATED YARN - Yarns formed of fibers from sheet plastic film. 



FILAMENT - A single thread (yarn) of extreme length. 



FILL - Fibers or yarns placed at right angles to the warp. 



FILTER FABRIC - A permeable fabric of synthetic fibers whose function is 

 to retain soil and be permeable to water. 



FLORA - Plant life as opposed to fauna (animal life) . The entire group 

 of plants found in an area. 



FORESHORE - The part of the shore lying between the crest of the seaward 

 berm (or upper limit of wave wash at high tide) and the ordinary low 

 water mark, that is ordinarily traversed by the uprush and backrush of 

 the waves as the tides rise and fall. 



FOULING ORGANISM - An organism that attaches to the surface of submerged or 

 introduced objects regardless of whether the objects are natural or man- 

 made. 



GALVANIZE - To subject to the action of electric currents; to coat with zinc. 



GEOTEXTILE - Any permeable textile used with foundations, soils, rock, 

 earth or any other geotechnical material as an integral part of a man 

 made project, structure or system. 



GEOTEXTILE FILTER - A permeable fabric of synthetic fibers whose function is 

 to retain soil and be permeable to water. 



GRAVEL - A coarse grained, cohesionless material whose size ranges between 

 76.2 millimeters and the No. 4 sieve. See SOIL CLASSIFICATION. 



GROIN (British, GROYNE). - A shore protection structure built (usually 

 perpendicular to the shoreline) to trap littoral drift or. retard erosion 

 of the shore. 



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