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Maintenance & Monitoring Plan <br /> 210 Big Island, City of Orono; Hennepin County, MN <br /> System Description: <br /> System is designed for a three bedroom, Type II home or 304 gallons per day. The <br /> system will consist of 1,500 gallons sepric tank capacity, two 500 gallon pumping <br /> charnbers, two Puraflo Peat Biolfilter units, and a 204 square foot drain field with 17 <br /> Quick4 Infiltrator High Capacity chambers. <br /> O�eration Description: <br /> Septic tank effluent will be dischazged out of the pumping chamber to the peat filters. A <br /> control panel will dose the filter on a timed basis via a lateral network, distributing the <br /> septic tank effluent evenly over the filter where 80-90% of necessary treatment will take <br /> place. An under drain in the peat filters will drain the filter effluent to the second pump <br /> chamber with a second pump to the drain field on a demand basis. A gravity fed drop <br /> box system will distribute the filter effluent into shallow drain field trenches. <br /> Component Service Service Frequency of Monitoring <br /> Needed Compliance Monitoring Compliance <br /> Level Level <br /> Flow None None Quarterly <300 gallons per <br /> da avera e <br /> Septic Tank Pump Scum/solids Annual sludge Sludge Depth <br /> build up and scum <12"from ' <br /> measurements baffle, <br /> Scum Depth<3" ' <br /> from baffle <br /> Peat Filter Replace Peat Ponding of Annual No Ponding <br /> Water Above Above Laterals <br /> Laterals under <br /> drain not <br /> lu ed ' <br /> Peat Filter Replace Peat BOD&TSS Every other year BOD&TSS ; <br /> Treatment levels in August Treatment levels <br /> <75% >75% ; <br /> Pumps/PaneUFloats Repair/Replace Alarm Annual No Alarm— <br /> Working <br /> ro erl <br /> Drain Field Add drain field Excessive Annual Limited Ponding <br /> trenches Ponding occurs or no Surface <br /> in Drain Field, Seepage ' <br /> or Surface <br /> Seepage is <br /> occurrin ' <br /> . ; <br /> � <br /> i <br /> i <br />