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System Design Description <br /> The septic system consists of holding/dosing tanks, 2 dosing pumps with controller, 1 <br /> MicroSeptec unit and a filter bed with 100 percent reserve area. The waste water from <br /> the restrooms will gravity flow to the holding/dosing tanks. The holding/dosing tanks <br /> provide a large surge chamber for peak system flows. A pump will be installed in each <br /> dosing tank, which will direct flow to the MicroSeptec unit. Each dosing pump will be <br /> controlled by a timer, which will be used to provide a uniform flow to the MicroSeptec <br /> unit integrated over a 24 hour period. One dosing pump will be installed with a low level <br /> cut out float, a high level pump override float and a high level alarm float. The dosing <br /> pumps will be controlled by a timer to provide power to the pumps for(x)number of <br /> minutes per hour. In the event that the timer is not set properly and the flow exceeds the <br /> pumping rate then the level will increase in the dosing tank until the override float <br /> activates to operate the pumps to reduce the level in the dosing tanks until the low level <br /> cut out switch stops the pump operation. In the event that the system inflow exceeds the <br /> system capacity or a pump float failure occurs then the high level alarm float will sound <br /> audible and visible alarms. This alarm will continue until silenced and then the cause of <br /> the alarm can be determined and repaired. Each dosing pump will be set on the bottom of <br /> each dosing tank and will be connected to the dosing tank riser with a 2 inch pipe and <br /> true union at the point where the effluent pipe passes through the cement riser, this will <br /> permit easy removal of the dosing pump by simply disconnecting the electrical <br /> connections at the lid, disconnecting the true union and lifting the dosing pump and <br /> ` discharge pipe directly out through the lid. Electrical connections designed for use in wet <br /> environment will be utilized for all electrical connections in the dosing tank riser. <br /> The effluent from each dosing tank will be pumped through 2 inch PVC piping which <br /> will be field routed directly to the first chamber of the McroSeptec unit. <br /> One MicroSeptec ES25 (2500 gallons per day)will be used to process the estimated daily <br /> system flow of 1700 gallons per day. The effluent from the MicroSeptec unit following <br /> processing will be pumped to the filter bed using the effluent pump. At the outlet of the <br /> MicroSeptec unit a flow meter will be installed, which will be a totalizing flow meter and <br /> allow recording of the waste water volume processed by the MicroSeptec unit. This will <br /> be recorded at each system effluent sampling, which will be conducted quarterly. <br /> Each of the system components are discussed as follows: <br /> Dosing Tank <br /> The purpose of the two dosing tanks is to provide a place for acceptance of the waste <br /> from the restrooms and to mount(dosing)pumps and the pump control floats. The <br /> dosing tank is a 1900 gallon pre-cast septic tank without the lower baffle. The size of the <br /> #A, tank is approximately 7 feet 6 inches wide, 13 feet long and 6 feet 9 '/x inches deep. The <br /> pumps are placed in the dosing tank through access lids, which are approximately <br />