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� � + <br /> � — — 333 East Main Street <br /> P.O.Box 388 <br /> ^�� Elk River, MN 553?� <br /> � (763)441-7509 <br /> .�¢ �` � ;.,� SYS;TEN1S_«)��,z, ��_`�;" (EOQ)554-75C9 <br /> '�:�"`�'""' Fax:(763)441-9176 <br /> � ECO SYSTEti1S ENGIPJEERING,INC. Q-flldll:h201db�Ikdlllll'n.f?ct <br /> Date: I I/I 6/02 � <br /> �' Richard Parsons <br /> 4-424 West 82nd St <br />� Minneapolis, MN 55437 <br />� Re: Proposed sewage treatment system pians for new construction. <br /> � 1) Subject property Address—280 Big island, Orono, MN <br /> 2) Site Conditions - The lot is a wooded lot lake lot with an existing cabin without running water <br /> � or sewer system. No wells currently exist on the property but a privy does exist The <br /> owners carry water to the site from the main land. <br />� 3) Soil Conditions —The Hennipen County Soil Surve has ma ed the soil within th r <br /> Y pp e a ea of the <br />� subject propeny to be a Hayden Series loam. An update of the soil survey, a work in progress, <br /> has renamed the Hayden.Series to the Lester Series. The Lester Series soil is a very deep, well <br /> drained soil, with a depth to seasonal high water table greater than 6.0'. A description of the <br />� Lester Series is included in Soils Appendix. Our own soil borings performed on the lot, within <br /> the proposed drain field areas, found the soil to closely match the Lester Series. The physical <br />� properties section of the soil survey states the permeability of the soil ranges from 30-I 00 <br /> minutes per inch. Perc tests done on the lot 'rn 1987 by a E. Mullenmeister, found the perc rate <br /> of the soil to range from 8-33 minutes per inch. <br />� 4 Sizin of Treatment S stem —The sewa <br /> ) g y ge treatment system is designed for a two-bedroom <br />� home, with garbage disposal or whirlpool. The estimated daily flow for a two-bedroom home <br /> is 300 gallons. <br />� 5) Description of the Treatment Process— <br />� ➢ Primary Treatment - Sewage will be gravity discharged from the house to two septic tanks. <br /> Natural biological activities taking place inside of the septic tanks will separate solids and <br /> suspected particles. Solids are reduced to some extent through this process. <br />� <br /> , <br />� � <br />� <br />