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2.0 Design and Installation <br /> FIGURE 2: TYPICAL A42 CROSS SECTION <br /> SEED AND LOAM; <br /> /,--6" COVER OVER <br /> PIPE <br /> GEOTEXTI LE <br /> FABRIC <br /> 7" <br /> 6" <br /> SPECIFIED SAND <br /> 6" 24" 6" <br /> 36" <br /> A42MODULE (LxWxH)48"x24"x7" <br /> All systems are required to have a minimum of: <br /> • 6 inches of Specified Sand is at the edges of the GSF module. <br /> • 6 inches of Specified Sand is at the beginning and end of each GSF Row. <br /> • 6 inches of Specified Sand is directly below the GSF module. <br /> • Minimum 6 inches of cover over the distribution pipe. <br /> 2.1 SEPTIC TANKS: Dual compartment tanks are recommended for all systems. Eljen supports this <br /> practice as it helps to promote long system life by reducing TSS and BOD to the effluent disposal area. <br /> Effluent filters are also required. <br /> 2.2 SEPTIC TANK FILTERS: Septic tank effluent filters are REQUIRED on the outlet end of septic tank. <br /> Filter manufactures require that filters be cleaned from time to time.Ask your installer or designer for specific <br /> cleaning requirements based on the type or make of the filter installed. Eljen requires the septic tank to be <br /> pumped every three years or as needed which would be a good time to check and conduct filter <br /> maintenance. <br /> 2022 California Design&Installation Manual Page 6 www.eljen.com <br />