2010-01069 - new mound septic - Laserfiche WebLink

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, � M S T S 9075 I SS"i STREGT. A DNISION OF WRM SERVICES INC. KIMBALL,MN 55353 (320)398-2705 October 25, 2010 Bob Volkenant Volkenant Inc 1030 County Road 83 Maple Plain, N1N 55359 RE: Septic System Design for 2720 Fox Street, Long Lake, Minnesota. Dear Bob, As per your request a septic system has been designed to accommodate the existing 3 bedroom home at the above referenced property. Below is a summary of the design we completed and attached is a site plan, detail drawings, design sheets, soil boring logs, management plan and monitoring and mitigation plan. The property was evaluated for the potential of installing a septic systerri and due to fimited area, varing soils textures and a high seasonal watertable an other type septic system has been designed. Soil borings were completed in the area of the proposed drainfield and revealed eviderace of seasonal saturation at depths ranging from 12" to 18" below the ground sui�face. Based on the elevations of the soil borings the highest seasonal watertable was located at an elevation of 998.6 and to obtain the required three foot vertical separation from the seasonal water table the bottom of the drainfield wili need to be elevated to an elevation 101.6. A 752 square foot raised pressure bed with 3' of vertical separation from the seasonal water table has been designed. Because the system is elevated above the ground surface the e�isting soil beneath the absorption area is to be over-excavated to and elevation 98.0 and filled with washed mound sand to an elevation of 101.6. The drainfield is to be constructed on the wasi�ed sand layer and sideslopes either tapered or retained. The existing septic tanks are to be removed and two 1000 gallon septic tanks and a 1000 gallon pump tank are to be placed in the general location of the existing tanks. This system will be classified as an other type system and will be subject to semiannual monitoring to ensure the system is working properly. The system will also require the installation of a runtime meter or event counter be included in the pump controls. It is our opinion that the system we have designed will effectively treat and dispose of the wastewater if the system is properly installed and maintained. If you any questions regarding this design please feel free to contact me at(320)398-2705 or(320)980-1737. S incerely, 6 �I i��J�'1� '�-' `+ � 0 7 Miller's Sewage Treatment Solutions Bernie Miller