07-17-2006 Planning Commission Packet

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. , . _ �. ,,.. , . .; . . ' � . , - . " . � . _ ' , � . - - , Rusty Olson's=-Soi1_and Percolation Testing � . Josep6 J.OLson—MPCA`License#810 � � . � � . � 11481 Ri�erview Rd.NE,Hanover,MN 5534I . . � � : - (763)498-8779 May 14,2006 , . William Ulrich � • - 2280 French Creek Circle . • Orono,Hennepin County , This on-site sewage trealment system is designed for a type 1 six bedroom home in accordance with the . Minnesota PoIIution Control Agency Chapter 7080 Other standards. Due to compacted soils.The soil was dug out under the�existing system and replaced with course sand when � it was installed.There is an existing 10'x SS' rockbed.The city insp,ector would like to see a 5'x 55' addition to the existing rockbed.With the new addition to the existing rockbed the new rockbed would be 15'x 55"or 750 square feet of rockbed.The top of the existing system must be removed.The loam under the proposed addition must be removed down to the course sand and replaced with clean course sand to the eleva�ion of the bottom of the existing rocl.�ed.Add the new rockbed addition as per the design and replace the soil cover. ' All neighboririg wells are located greater than I00 feet from proposed treatment azea. Existing tanks may be used upon approval of the local inspector. A new 1250 gallon lift sta#�ion must be installed.The old 1000 gallon lift station is to be tumed into a septic tank. A LUG.Variance maybe needed to install an other system. ` The homeowner will be responsible for periodic monitoring of the other septic system. The monitoring set � by LUG. The mitigation plan for this property is pressurized mound�system. � A water meter will need to be installed in the house. " ? A pumping chamber will need to be installed to lift the effluent to the treatsnent area. The power supply and _ switches must be located outside the manhole and pumping chamber in a weatherproof enclosure. A warning device must be installed with light and sound devices;this is in case of a pump failure.Keep all � heavy equipment off of the proposed treatment areas before and after consti-ucrion. The area around both ' sites should be fenced offbefore construction. This design is not valid and the system will need to be relocated if failure to protect the areas proposed for on-site sewage treatrnent occurs. Nothing other than gray water,(laundry,showers,etc.)human water and toilet tissue would be disposed of into the septic tanks. . . Sinc ely � . : - " .� Joseph J.Olson _ � . . ;