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E-4 <br /> LAYER OF GEOTEXTILE LOAMY SAND CAP <br /> FABRIC PERFORATED LATERAL <br /> GRASS COVER 6 INCHES <br /> CLEAN SAND FILL TOPSOIL <br /> MAXIMUM SLOPE <br /> 3 TO I <br /> CLEAN ROCK q" <br /> TOPSOIL PLOWED OR 3/4 TO 2 V? INCHES <br /> DISKED SURFACE % SLOPE <br /> SUBSOIL <br /> CROSS SECTION A - A <br /> PIPE FROM <br /> PUMPING CHAMBER <br /> Y . n <br /> aN <br /> 1 � <br /> PERFORATED <br /> LATERALS i <br /> -/32 P ' <br /> � S <br /> - <br /> BED AREA ! - <br /> 6 Z <br /> hw <br /> A W w ; m A <br /> ' Z <br /> 20 <br /> INCHES —�-';�� INCHES <br /> DIKE 10 FEET .I� DIK <br /> MAX. <br /> TOTAL WIDTH <br /> PLAN VIEW <br />