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1 <br /> , <br /> ' <br /> The landscape position, soil parent material, elevation above known water table and the results <br /> ' of the soil investigation dictate that the site can support a standard subsurface drain field. The <br /> results of percolation tests, soil structure analysis and soil texture analysis lead to the selection <br /> , of a soil sizing faaor for this type of soil of 2.2 square feet per gallon. <br /> 4) Sizing of Treatment System —The sewage treatment system is designed for a three-bedroom <br /> ' home. No provisions for a whirlpool or garbage disposal are included in this plan. The <br /> estimated daily flow for a three-bedroom home is 450 gallons <br /> � 5) Description of the Treatment Process — <br /> ' ;� Primary Treatment - Sewage will be gravity discharged from the house to two fiberglass <br /> septic tanks. Natural biological activities taking place inside of the septic tanks will separate <br /> ' solids and suspected particles. Solids are reduced to some extent through this process. <br /> r Secondary Treatment—Septage from the clear zone of the septic tank flows into a 500- <br /> tgallon lift tank. Inside of the lift tank will be placed an Orenco biotube pump vault and <br /> modified well pump. Suspended particles larger than I/8" are filter out by the biotube <br /> ' pump vault. <br /> ' > Final Treatment—Screened septage is discharged out of the lift tank through the biotube <br /> pump vault to drain field consisting of Infiltrator BioDiffusers. As the septage trickles <br /> through the soil below biochemical processes remove harmful viruses and bacteria. <br /> ' 6) Description of Treatment S stem - <br /> Y <br /> ' :� Septic Tank— Use one I 500 gallon Xerxes fiberglass septic tank followed by second I 500 <br /> gallon Xerxes fiberglass tank with an installed baffle to provide two separate chambers. The <br /> � tanks shall be set in a series with the single compartment tank first followed by the two- <br /> compartment tank. The size of the chambers in the two- compartment tank shall be 1000 <br /> , gallon and 500 gallon. The 1000 gallon chamber will serve as septic tank capacity and the 500 <br /> gallon chamber will serve as the lift pump chamber. <br /> ' <br /> ' 2 <br /> ' <br />