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`,�t 'Pelephone 473-7357 <br /> , . R <br /> . � <br /> C ITY of ORONO <br /> Yost Office Box 66•Crystal Bay, Minnesota 55323•Municipal Offices <br /> • On the North Shore of Lake Minnetonka <br /> • - • • <br /> December 8 , 1983 <br /> Mr. Joseph Backes <br /> 3416 Jidana Lane <br /> Minnetonka, Minnesota 55343 <br /> Re : Approval for Experimental On-Site Sewage Treatment System <br /> Dear Mr. Backes: <br /> I have reviewed your proposal as submitted by Tom Smith Associates, <br /> Inc. to construct and use a septic system with gravelless (SB-2) <br /> drainfield system for your proposed seasonal cabin on Big Island. <br /> The information presented appears to be thorough and well thought-out. <br /> I have discussed this matter with Dick Benson, City Administrator, <br /> and he has given me the go-ahead to proceed, handling all items on <br /> a staff level rather than involving the City Council or Planning <br /> Commission. <br /> Therefore, based on the above considerations, the City will issue <br /> your contractor a permit for the system essentially as proposed, with <br /> the following changes and/or stipulations to be agreed upon by you <br /> in writing at the time the permit is issued: <br /> l . The design is based on a three-bedroom seasonal use cabin with <br /> a design water use factor of 218 gallons per day. Should your <br /> final design plans indicate additional bedrooms, the lineal <br /> footage of SB-2 should be increased proportionately. <br /> 2 . The serial distribution system must be constructed such that each <br /> section of SB-2 is loaded to approximately 1" less than the diameter <br /> of the pipe; i.e . , if 10 " diameter SB-2 is used, set the distributior <br /> pipes, by using an elbow system if necessary, so that outflow to <br /> the next trench will occur when effluent reaches a depth of 9"± <br /> in the tubing. <br /> 3 . The inspection pipes in each tank must be fitted with screw-type <br /> caps (rather than slide-on caps) for ease of inspection. <br /> 4 . A new 5/8" water meter and remote exterior reader shall be provided <br /> by the City at no cost to you, but must be installed by your plumber <br /> at yo�ar expense. The meter shall be installed so as to exclude <br /> outside sillcocks from metering. <br />