2008-00070 - new septic - Laserfiche WebLink

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� � � � � Maintenance & Monitorin Plan g � 710 Big Island, City of Orono; Hennepin County, MN Svstem Description: � System is designed for a three bedroom, Type II home or 300 gallons per day. The system will consist of 2,000 gallons septic tank capacity, a 500 gallon pumping chamber, two Puraflo Peat Biolfilter units, and a 468 square foot drain field with 39 Quick4 � Infiltrator High Capacity chambers. Operation Description: � Septic tank effluent will be discharged out of the pumping chamber through an Orenco Systems, Inc. Biotube Pump Vault with a modified well pump to the peat filters. A control panel will dose the filter on a timed basis via a lateral network, distributing the ' septic tank effluent evenly over the filter where 80-90% of necessary treatment will take place. An under drain in the peat filters will drain the filter effluent to the drain field. A gravity fed drop box system will distribute the filter effluent into shallow drain field ' trenches. Component Service Service Frequency of Monitoring ' Needed Compliance Monitoring Compliance Level Level Flow None None Quarterly <300 gallons per ' da avera e Septic Tank Pump Scum/solids Annual sludge Sludge Depth build up and scum <12" from baffle, ' measurements Scum Depth<3" from baffle Screened Pump Remove and Scum/solids Annual visual No Low Level � Vault Filter Clean Filter build up on filter inspection Alarms; visual inspection finds excessive solids build-up � Peat Filter Replace Peat Ponding of Annual No Ponding Water Above Above Laterals Laterals under ' drain not lug ed Peat Filter Replace Peat BOD&TSS Every other year BOD&TSS Treatment levels in August Treatment levels , <75% >75% Drain Field Add drain field Excessive Annual Limited Ponding trenches Ponding occurs or no Surface � in Drain Field, or Seepage Surface Seepage is occurrin ' ' 1 1 �