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,,-0-,,� <br /> ,� ��� <br /> O; ,` O�\ <br /> ��� -�� CITY of ORONO <br /> t,, �!'����:�� .: � <br /> � �`6 �'� Cti Municipal Offices <br /> ��.L��`�,;�1����'f�' G~ Street Adtlress: Mailing Address: <br /> 9kE8H04'�/ 2750 Kelley Parkway P.O. Box 66 <br /> ��_=__-=�� Orono, MN 55356 Crystal Bay, MN 55323-0066 <br /> November 16, 1993 <br /> Dave Peterson <br /> 2625 Fox Street <br /> Wayzata, MN 55391 <br /> RE: Approval of Septic System <br /> Dear Mr. Peterson: I <br /> This letter is to confirm the City of Orono's position regarding your recently constructed septic <br /> system. The system consists of septic tanks and a shallow trench drainfield with a curtain drain, <br /> all located generally in the front yard. <br /> Soil borings performed by S-P Testing, Inc. indicated that soil mottling (an indicator of seasonal <br /> water table) was encountered at a depth of less than 4' and a mound treatment system would <br /> normally have been required at the site. However, no area on the site with slope suitable for <br /> a mound met the required well-to-drainfield setback. <br /> Tlierefore, the Inspection Department allowed the installation of a shallow trench system with <br /> a curtain drain around the uphill perimeter to intercept and eliminate any seasonal ground water <br /> that may occur in the area of the drainfield. With this curtain drain in place, this system as built <br /> is considered by the City of Orono as a conforming system, meeting the code requirements for <br /> separation from the seasonal water table. <br /> Sincerely, <br /> ��� ,/� � <br /> /�G� ��;� "_.,_"'--`. <br /> � <br /> Michael P. Gaf�ron <br /> Assistant Planning & Zoning Administrator <br /> MPG/lsv <br /> cc: Jeanne A. 1�labusth, Building & Zoning Administrator <br /> Stephen Weckman, On-Site Systems Manager <br /> Telephone (612) 473-7357 • FAX 473-0510 <br />