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THE SCHEMATIC BELOW ILLUSTRATES BIOMAT FORMATION THAT WILL <br /> OCCUR OVER TIME WITHIN THE INFILTRATOR CHAMBERS AT THE <br /> SOIL/EFFLUENT INTERFACE. INITIALLY,THE EFFLUENT WILL INFILTRATE THE <br /> SOIL AS IT ENTERS THE CHAMBER,AS SHOWN IN THE TOP SCHEMATIC. AS THE <br /> BIOMAT FORMS,THE EFFLUENT MUST FLOW FURTHER OUT FROM THE POINT <br /> OF ENTRY TO WHERE PERMEABILITY IS GREATER THIS IS DEPICTED BY THE <br /> LARGE,THICK ARROWS. EVENTUALLY,THE BIOMAT AT THE SOIL/EFFLUENT <br /> INTERFACE ALONG THE ENTIRE LENGTH OF THE CHAMBERS WILL BE IN <br /> EQUILIBRIUM. PERMEABILITY WILL BE REDUCED AND FAILURE MAY BE <br /> IMMINENT. THE TIME FOR THIS BIOMAT FORMATION TO COMPLETELY OCCUR <br /> IS UNKNOWN AND UNPREDICTABLE. (ADAPTED FROM METCALF AND EDDY - <br /> WASTEWATER ENGINEERING: TREATMENT, DISPOSAL, REUSE). <br /> - -- ---- ----- - - - <br /> __ <br /> Equilibrium <br /> - -- - - - - - - - - -- - - !� <br />